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Sample records for anastrepha fraterculus wied

  1. Breeding technique of Anastrepha fraterculus (Wied.) for genetic studies

    International Nuclear Information System (INIS)

    Manso, F.

    1999-01-01

    Various samples of Anastrepha fraterculus from different areas in Argentina were obtained to develop artificial breeding in the laboratory. Based on a modification of Salles's method, an improved artificial rearing of the species was developed with satisfactory results for genetic analysis. The advances made will contribute towards the search for genetic mechanisms for control. (author)

  2. Use of gamma radiation against Ceratitis capitata (Wied., 1824), Anastrepha Fraterculus (Wied., 1830) and Anastrepha Obliqua (Macquart, 1835) (Diptera, Tephritidae) for disinfestation of mangoes for exportation

    International Nuclear Information System (INIS)

    Raga, A.

    1990-04-01

    The gamma radiation doses to attend quarantine requirements of importing countries, by disinfecting mango fruits from Ceratitis capitata (Wied., 1824), Anastrepha Fraterculus (Wied., 1830) and Anastrepha Obliqua (Macquart, 1835) is studied. An increase of radiation resistance of C. capitata eggs was observed during the embryonic development. Doses up to 40 Gy for C. capitata and up to 100 Gy for A. Fraterculus and A. Obliqua did not affect pupation of 4-,5-,6- and 7-day-old larvae, irradiated 'in vitro'. Larvae of C. capitata were more resistant than A. Obliqua and A. Fraterculus. Larvae of A. Obliqua were more resistant than A. Fraterculus. The dose of 125.5 Gy fulfilled the criteria for efficacy, which prevented emergence of the adults of three fruit fly species studied. (author)

  3. Controle químico de Anastrepha fraterculus (Wied. (Diptera: Tephritidae em laboratório Chemical control of Anastrepha fraterculus (Wied. (Diptera: Tephritidae in laboratory

    Directory of Open Access Journals (Sweden)

    Priscila Lang Scoz

    2004-12-01

    Full Text Available O efeito de quatro novos grupos químicos de inseticidas incluindo avermectina (benzoato de emamectina, éter piretróide (etofemprox, neoniconitnóide (imidacloprid, thiacloprid e thiamethoxan e naturalyte (spinosad foram avaliados em laboratório (25 ± 3ºC, umidade relativa de 70 ± 10% e fotofase de 12 horas, visando ao controle de adultos e ovos/larvas de Anastrepha fraterculus comparando-os com os fosforados fenthion e thrichlorphon. O benzoato de emamectina não foi eficiente no controle de adultos de A. fraterculus via contato e ingestão. O etofenprox, imidacloprid, spinosad e thiamethoxan foram eficientes no controle de adultos de A. fraterculus via contato e ingestão, proporcionando maior mortalidade via ingestão. Os novos inseticidas não provocaram mortalidade significativa de ovos/larvas de A. fraterculus localizados no interior de maçãs, enquanto que os fosforados fenthion e thrichlorphon resultaram em 100% de mortalidade das fases imaturas e adultos. Os novos inseticidas apresentam potencial para uso nas iscas tóxicas, substituindo os fosforados para o controle de adultos.The South American Fruit Fly, Anastrepha fraterculus is one of the most important pest of temperate fruit crops. The effect of four new inseticide groups to replace organophosphate compounds for A. fraterculus control was evaluated under laboratory conditions (25 ± 3ºC, relative humity of 70 ± 10% and 12:12 L:D. Emamectin benzoate, etofenprox, imidacloprid, spinosad, thiacloprid and thiamethoxan were evaluated to control adults by contact and ingestion and against eggs/larvae inside apple fruits compared with fenthion and thrichlorphon. Emamectin benzoate was not efficient to control adults of A. fraterculus by contact and ingestion. Etofenprox, imidacloprid, spinosad and thiamethoxan were efficient to control adults by contact and ingestion being more toxic by ingestion. No new insecticide controlled eggs/larvae inside apple fruit while organophosphate

  4. Karyotype study of the South American fruit fly, Anastrepha fraterculus (Wied.) in Argentina

    International Nuclear Information System (INIS)

    Lifschitz, E.; Manso, F.; Basso, A.

    1999-01-01

    The most frequent karyotype of Anastrepha fraterculus in Argentina is described here on the basis of mitotic metaphase morphology. It was named ''fraterculus Arg 1''. The diploid number is 2n=10+XX/XY and in males it comprises five homomorphic pairs and one heteomorphic pair, the latter being the sexual pair. Samples from different populations were cytologically analyzed, and ''fraterculus Arg 1'' is present in all of them at a high frequency (about 60%). A typical C band pattern of the X chromosome was found only in the Montecarlo (Misiones province) population. (author)

  5. Assessment of Injuries Caused by Anastrepha fraterculus (Wied.) (Diptera: Tephritidae) on the Incidence of Bunch Rot Diseases in Table Grape.

    Science.gov (United States)

    Machota, R; Bortoli, L C; Cavalcanti, F R; Botton, M; Grützmacher, A D

    2016-08-01

    Anastrepha fraterculus (Wied.) is the main insect pest of table grapes (Vitis vinifera) in the Southern Region of Brazil. In this study, we aimed to investigate the effect of fruit puncturing by adult females and larval infestation by A. fraterculus on the occurrence of bunch rot disease in the grape (cultivar "Itália") by evaluating grapes (a) punctured for oviposition by females of A. fraterculus, sterilized in laboratory with novaluron (40 mg L(-1)) and further spray-inoculated separately with Botrytis cinerea (1 × 10(6) conidia mL(-1)), Glomerella cingulata (1 × 10(6) conidia mL(-1)), and bacteria and yeast that cause sour rot (1 × 10(5) cells mL(-1)), (b) grapes punctured for oviposition by non-sterilized females with pathogen spraying, (c) grapes with mechanical wounds and pathogen spraying, (d) grapes with no wounds and with pathogen spraying, (e) grapes punctured for oviposition by A. fraterculus chemically sterilized in laboratory with novaluron, (f) grapes punctured for oviposition by A. fraterculus non-sterilized in laboratory with novaluron, (g) grapes with mechanical wounds, and (h) grapes with no sterilization or pathogen spraying. Our data indicated that the mechanical and oviposition wounds caused by A. fraterculus increased the percentage of grapes infected by B. cinerea, G. cingulata, and microorganisms of acid rot. The grape puncturing by A. fraterculus and the mechanical wound allows the penetration of B. cinerea and microorganisms leading to acid rot. We conclude that the fruit fly A. fraterculus may facilitate phytopathogens penetration leading to bunch rots in the table grape Itália.

  6. Disinfestation of apples attacked by the fruit fly Anastrepha fraterculus (Wied.) (Diptera: Tephritidae) using gamma radiation of cobalt-60

    International Nuclear Information System (INIS)

    Arthur, Valter; Wiendl, Frederico M.

    1996-01-01

    Apples, cv. Gala, artificially infested during 72 hours with adults of the fruit fly Anastrepha fraterculus (Wied.) were irradiated with the following gamma radiation doses: 0 (control), 25, 50, 75 and 100 Gy, at the dose rate of 1048 Gy per hour. After irradiation fruits were put in plastic bags with 80 ml of sugar cane bagasse. The bags were maintained in a rearing room at temperature 21 - 24 deg C, 65 - 75% R H, and photo period of 12 hours. Pupae obtained were sieved out and kept in small glass tubes. All doses tested did not allow emergence of adults. (author)

  7. Behaviour of Anastrepha fraterculus

    International Nuclear Information System (INIS)

    Salles, L.A.

    1999-01-01

    A number of experiments and observations on the behaviour, host associations, attractants for adults and pupation of the South American fruit fly Anastrepha fraterculus (Wiedemann), conducted under field or semi-natural conditions are presented here. (author)

  8. Trials to determine levels of oviposition of Anastrepha fraterculus (Wied.) on fruit and artificial oviposition devices

    International Nuclear Information System (INIS)

    Alama, D.

    1999-01-01

    The current work was conducted in order to determine the level of oviposition of Anastrepha fraterculus on fresh mangos and artificial oviposition devices. Four trials were carried out during which freshly harvested fruit was exposed to wild South American adult fruit flies. The following viable oviposition/day/kg of fruit (viable ovipositions = emerged adults) were established: 79.16, 71.25, 83.6 and 60.6. The trials were carried out at 25 deg. C - 28 deg. C and 60%-80% relative humidity. Beginning with the first generation one trial was carried out which confirmed the acceptance of sexually mature females to oviposit on red oviposition devices consisting of wax-covered cloth. However, red plastic containers with holes of 0.5 mm did not produce good results. (author)

  9. Biology of Anastrepha fraterculus

    International Nuclear Information System (INIS)

    Salles, L.A.

    1999-01-01

    This paper presents available (published) information on specific abiotic factors, such as temperature, humidity, and lighting on the life cycle of Anastrepha fraterculus, henceforth AF. AF displays holometabolous development: egg, larva (development is completed in three instars), pupa and free living adults. (author)

  10. Current status and perspectives for management of Anastrepha fraterculus (Wied.) in apple orchards in Brazil

    International Nuclear Information System (INIS)

    Kovaleski, Adalecio; Sugayama, Regina L.; Malavasi, Aldo

    2000-01-01

    Pomiculture is a recent activity in southern Brazil. The first apple orchards were installed in the early 1970s. Recently, the area grown with apples exceeded 30,000 ha, concentrated in the regions of Fraiburgo and Sao Joaquim (state of Santa Catarina) and Vacaria and Bom Jesus (state of Rio Grande do Sul). Part of the 600,000 tons that are harvested every year is exported to the USA and European countries. Some exotic apple pests were unintentionally introduced, like the European red mite (Panonychuls ulmi Koch) and the Oriental fruit moth (Grapholita molesta Busck). Furthermore, some native species of insects became important pests, as in the South American apple leafroller (Bonagota cranaodes Meyrick) and the South American fruit fly (Anastrepha fraterculus Wiedemann). The South American fruit fly is the best-studied pest of apples in Brazil regarding its biology and ecology. In this paper, we synthesise the information available and discuss the feasibility of adopting new control methods. Most experiments were conducted in Vacaria where A. fraterculus populations reach levels as high as 150 flies/trap day in some years. Sixteen species of Anastrepha occur in the region of Vacaria and only A. fraterculus is considered economically important (Kovaleski et al., submitted). In addition to the typical morphology of A. fraterculus, the morphotype CSS (Selivon et al. 1996) was detected in McPhail traps and infested native fruits. The second most frequent species of Anastrepha is A. dissimilis Stone. It may be responsible for more than 20% of fruit flies in commercial apple orchards in some periods of the year (November-January) but does not attack apples (Kovaleski 1997). Adult population fluctuation has been studied for the last four years using plastic McPhail traps containing grape juice at 25% (v/v) as attractant. It is more efficient than corn protein hydrolysate, vinegar, and sugarcane molasses (Kovaleski et al. 1995) and is widely used by apple growers as the

  11. Progress on the artificial rearing of Anastrepha fraterculus (Wied.) (Diptera: Tephritidae) in Colombia

    International Nuclear Information System (INIS)

    Nunez Bueno, L.; Guzman Duenas, R.

    1999-01-01

    With the purpose of evaluating post-harvest quarantine treatments for fruits in Colombia, we have established experimental colonies of fruit flies (Diptera: Tephritidae) at the Colombian Agricultural Institute (ICA), plant quarantine Laboratory Ibague (Tol.) at 24 deg. C, 70-80% RH, and 10 hr light. The procedures and results refer only to A. fraterculus from September 1994 to September 1996. The first adults, obtained from Coffea arabica L. cherries, were initially multiplied in fruits and later put on artificial diet. The handling procedures, diets and data collected are adapted from those established by USDA-ARA 1981, Celedonio et al. 1989, Gonzalez et al. Martinez et al. 1987, and others, that were used for Anastrepha spp. The average percentages of recuperation between stages that were hatched 66.0±1.0; first to third instar larvae 28.12±14.4; third instar larvae to pupae 81.80±3.0; pupae to adult 75.82±3.4. Additional data related to partial mortality of the stages are also discussed. The average recuperation from eggs to third instar larvae of 17.57%, and from eggs to emerged adults of 9.5±4.9, is low and indicates the necessity of doing basic research to improve the procedures. (author)

  12. Rearing of Anastrepha fraterculus (Wiedemann)

    International Nuclear Information System (INIS)

    Salles, L.A.

    1999-01-01

    A few attempts were conducted to establish basic needs, materials, conditions and procedures for artificial rearing of Anastrepha fraterculus, henceforth AF. A brief summary will be presented based on published and personal information. (author)

  13. Flutuação populacional de adultos de Anastrepha fraterculus (Wied. em cultivo protegido e convencional de videira Anastrepha fraterculus (Wied. adult seasonal fluctuation in plastic covering and conventional grapevine cultivation

    Directory of Open Access Journals (Sweden)

    Geraldo Chavarria

    2009-09-01

    Full Text Available A mosca-das-frutas sul-americana, Anastrepha fraterculus (Wiedemann, 1830 (Diptera: Tephritidae, é considerada praga-chave das fruteiras de clima temperado na região Sul do Brasil. No entanto, poucas informações encontram-se disponíveis quando a espécie está associada à cultura da videira. Neste trabalho, foi avaliado o efeito da cobertura plástica sobre a população de adultos de A. fraterculus durante o ciclo de cultivo da videira cv. Moscato Giallo. O experimento foi conduzido nos ciclos de 2005/06 e 2006/07, em vinhedo comercial localizado em Flores da Cunha-RS (latitude 29° 06' sul, longitude 51° 20' oeste e altitude de 541 m, coberto com plástico impermeável tipo ráfia (160 µm de 12 fileiras com 35 m, deixando-se cinco fileiras sem cobertura (controle. Os adultos foram monitorados nas duas áreas com armadilhas McPhail, utilizando-se como atrativo de proteína hidrolisada (BioAnastrepha® a 5%, no período de outubro a abril, nos dois ciclos. O pico populacional da espécie, nos dois ciclos, foi observado no período de maturação da uva. Não foram registradas diferenças significativas nas capturas entre as áreas, concluindo-se que a cobertura plástica não afeta a mobilidade e a flutuação populacional de A. fraterculus em cultivo protegido de videira.The South American Fruit Fly Anastrepha fraterculus (Wiedemann, 1830 (Diptera: Tephritidae is one of the most important pests of temperate fruits in Southern Brazil. Little information regarded to pest damage is available when this insect is associated with vineyards. In this work was evaluated the plastic cover effect on seasonal fluctuation of A. fraterculus adults in vineyards of cv. Moscato Giallo. The experiment was conducted on 2005/06 and 2006/07 seasons in a vineyard located in Flores da Cunha, RS (latitude 29° 06' South, longitude 51° 20' West and altitude 541 m, covered with an impermeable plastic cloth (2.65 m x 160 µm, in 12 rows with 35 m, with five rows

  14. Specific bibliography on Anastrepha fraterculus

    International Nuclear Information System (INIS)

    Salles, L.A.; Jaldo, H.

    1999-01-01

    Most publications on Anastrepha fraterculus are in the literature sources from South America, and papers were published in Spanish or Portuguese. Many literature sources mentioned in this list are not indexed in entomological abstracts and, consequently, are not easily available outside their home state or country. Due to this fact, the inclusion of a list of specific bibliography on A. fraterculus could be a help for researchers and students interested in fruit flies. In this list are included only references directly dealing with Anastrepha fraterculus. Obviously, many more references exist that consider this species, but general or non-specific work or data concerning A. fraterculus were not included in the present list. (author)

  15. Taxonomic status of Anastrepha fraterculus

    International Nuclear Information System (INIS)

    Steck, G.J.

    1999-01-01

    There has long been speculation that nominal Anastrepha fraterculus comprises more than a single biological species. Herein is a review of data supporting the hypothesis that multiple cryptic species are present. Evidence includes unusual variation in pest status, morphology, karyotypes, isozymes, mitochondrial DNA and cuticular hydrocarbon. The data strongly support the notion of multiple cryptic species. However, it is not yet possible to state how many species may be involved or to delineate them by diagnostic morphology, distribution, host plants or behavior. A combination of methodologies will be needed to resolve the complex. (author)

  16. Gamma radiation use as a quarantine treatment for Ceratitis capitata (Wied., 1824) and Anastrepha fraterculus (Wied., 1830) in papaya fruits (Carica papaya, Linnaeus), cultivar sunrise solo

    International Nuclear Information System (INIS)

    Faria, J.T. de.

    1989-01-01

    The gamma irradiation as treatment for control of the immature stages of fruit flies, C. capitata and A. fraterculus in papaya fruits, cultivar Sunrise Solo is studied. The gamma rays attenuation was observed by one and two papaya fruits placed between source and infested fruit, and this changed the radiation doses required to obtain mortality in eggs and larvae of the Medfly. The efficacy of irradiation was higher when the infested papayas were packed in paper box. The radiation dose determined using the Probit 9 concept, for immature stages mortality of C. capitata was 107,74 Gy and for A. fraterculus was 50,82 Gy. The sterilizing doses for adults of C. capitata and D. fraterculus, irradiated as pupae, was 60 Gy and 40 Gy, respectively. (author)

  17. The South American fruit fly, Anastrepha fraterculus (Wied.); advances in artificial rearing, taxonomic status and biological studies. Proceedings of a workshop

    Energy Technology Data Exchange (ETDEWEB)

    1999-01-01

    One of the fruit flies of major concern, because of its economic and quarantine importance in the Americas, is the exotic Mediterranean fruit fly, Ceratitis capitata, which is established throughout the Central and South American countries, excluding Chile. Chile, Mexico and the USA have conducted multi-million dollar campaigns to prevent the establishment of this and other exotic fruit flies in their respective territories, in support of the development of important fruit production and export industries. Other important fruit fly species, which are native to the American continent, are those of the genus Anastrepha. In this group, of most economic importance are A. obliqua and A. ludens for Mexico and some Central American countries and A. fraterculus and A. obliqua for South America. In this publication, attention is focused on A. fraterculus, the South American fruit fly. This species, as it is presently recognized, occurs from Mexico to Argentina and is reported from approximately 80 host plants, including commercial fruits of economic importance, such as mango, citrus, guava, apple and coffee. As A. fraterculus if considered to be of high economic and quarantine importance in many countries in South America, it is justifiable to recommend and promote the implementation of activities to strengthen knowledge of the species and develop techniques for its control and/or eradication. The development of sterile insect technique (SIT) and other biological control methods are very encouraging alternatives, as can be seen from examples in Mexico and the USA, where these approaches are in use against A. ludens and A. obliqua Refs, figs, tabs

  18. The South American fruit fly, Anastrepha fraterculus (Wied.); advances in artificial rearing, taxonomic status and biological studies. Proceedings of a workshop

    International Nuclear Information System (INIS)

    1999-01-01

    One of the fruit flies of major concern, because of its economic and quarantine importance in the Americas, is the exotic Mediterranean fruit fly, Ceratitis capitata, which is established throughout the Central and South American countries, excluding Chile. Chile, Mexico and the USA have conducted multi-million dollar campaigns to prevent the establishment of this and other exotic fruit flies in their respective territories, in support of the development of important fruit production and export industries. Other important fruit fly species, which are native to the American continent, are those of the genus Anastrepha. In this group, of most economic importance are A. obliqua and A. ludens for Mexico and some Central American countries and A. fraterculus and A. obliqua for South America. In this publication, attention is focused on A. fraterculus, the South American fruit fly. This species, as it is presently recognized, occurs from Mexico to Argentina and is reported from approximately 80 host plants, including commercial fruits of economic importance, such as mango, citrus, guava, apple and coffee. As A. fraterculus if considered to be of high economic and quarantine importance in many countries in South America, it is justifiable to recommend and promote the implementation of activities to strengthen knowledge of the species and develop techniques for its control and/or eradication. The development of sterile insect technique (SIT) and other biological control methods are very encouraging alternatives, as can be seen from examples in Mexico and the USA, where these approaches are in use against A. ludens and A. obliqua

  19. The South American fruit fly, Anastrepha fraterculus (Wiedemann) in Brazil

    International Nuclear Information System (INIS)

    Zucchi, R.A.; Araujo, E.L.; Canal D, N.A.; Uchoa F, M.A.

    1999-01-01

    Anastrepha fraterculus, the South American fruit fly, is the most common and economically important pest for the fruit-bearing species in the Neotropical region. However, there are some species that are close to A. fraterculus and, sometimes they can be erroneously identified as A. fraterculus. The separation of A. fraterculus from A. obliqua, A. sororcula and A. zenildae, species closely related to South American fruit fly, is discussed. Also, information on the host plants and braconid parasitoids for A. fraterculus in Brazil is presented. (author)

  20. Lekking behavior of Anastrepha Fraterculus (Diptera: Tephritidae)

    International Nuclear Information System (INIS)

    Segura, D.; Petit-Marty, N.; Cladera, J.; Sciurano, R.; Calcagno, G.; Gomez Cendra, P.; Vilardi, J.; Vera, T.; Allinghi, A.

    2007-01-01

    Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) displays a lek mating system. Males form groups in which they simultaneously display signals (acoustical, visual, or chemical) to attract females with the purpose of mating. Females visit the lek and choose among signaling and courting males to mate. Scarce information is available in A. fraterculus about the main factors involved in female choice and the behavior of displaying males. This information could be important within the context of pest control programs with a sterile insect technique (SIT) component, because departures from normal sexual behavior caused by artificial rearing could affect males' performance in the field. In this study we assessed A. fraterculus male behavior within the leks and analyzed the importance of behavioral and morphological traits on their copulatory success. The existence of preferred places for lek formation was evaluated in field cages with trees inside and analyzed by dividing the trees in sectors according to a 3-dimensional system. Males were individually weighed, marked, and observed every 15 min. Morphometric and behavioral characteristics of successful and unsuccessful males were compared. Most successful males grouped in a region of the tree characterized by the highest light intensity in the first 2 h of the morning. Results showed that pheromone calling activity is positively associated with copulatory success. Copulations were more frequent for males calling inside the lek, indicating that pheromone calling activity and presence in the lek are key factors for copulatory success. A positive association between copulatory success and eye length was found; some characteristics of the face were also associated with copula duration and latency. (author) [es

  1. Mass production in liquid diet and radiosterilization of South American fruit fly Anastrepha sp.1 aff. fraterculus (Wied., 1830) (Diptera: Tephritidae)

    International Nuclear Information System (INIS)

    Kamiya, Aline Cristiane

    2010-01-01

    Both the biological control techniques as the Sterile Insect Technique (SIT), are used in many countries to control, suppress and even eradicate fruit flies and other pests in agriculture and public health. The use of such techniques minimizes the continuous employment of insecticides, protects the environment and conforms to standards for food safety. However, it is necessary to implement such programs, technology to produce millions of parasitoids and the pest in its own laboratory with biological quality similar to the insects found in nature and cost competitive with chemical control. The objectives of this study was to establish protocols for artificial rearing of A. sp. 1 aff. fraterculus in liquid larval diet that will achieve levels of mass production for a possible reduction in the cost of establishing and determining the dose of radiation sterilization of adult A. sp. 1 aff. fraterculus meeting the quality parameters required by the Sterile Insect Technique with insects from the creation of Radioentomology Laboratory of CENA/USP. Seven experimental diets compared to the conventional diet used in Radioentomology Lab. of CENA/USP, which was used as control. All seven diets have in common the exclusion of agar in its formulation. Only two of the diets tested were suitable for larval development of the fly, they compared with the standard diet, showed inferior results with respect to the volume of recovered larvae, pupae and weight of emergency, however, no significant differences regarding the periods of development , pupal recovery, sex ratio and longevity under stress. It is possible to replace the diet with agar for liquid diets for artificial creation of A. sp. 1 aff. fraterculus, reduced cost and greater convenience of handling, but due to their quality standards lower than the standard diet, more tests are needed especially regarding the adaptability of the insect to the new environment. To determine the sterilizing dose this study examined the

  2. Mass production in liquid diet and radiosterilization of South American fruit fly Anastrepha sp.1 aff. fraterculus (Wied., 1830) (Diptera: Tephritidae); Criacao massal em dieta liquida e radioesterilizacao da mosca-sulamericana Anastrepha sp.1 aff. fraterculus (Wied., 1830) (Diptera: Tephritidae)

    Energy Technology Data Exchange (ETDEWEB)

    Kamiya, Aline Cristiane

    2010-07-01

    Both the biological control techniques as the Sterile Insect Technique (SIT), are used in many countries to control, suppress and even eradicate fruit flies and other pests in agriculture and public health. The use of such techniques minimizes the continuous employment of insecticides, protects the environment and conforms to standards for food safety. However, it is necessary to implement such programs, technology to produce millions of parasitoids and the pest in its own laboratory with biological quality similar to the insects found in nature and cost competitive with chemical control. The objectives of this study was to establish protocols for artificial rearing of A. sp. 1 aff. fraterculus in liquid larval diet that will achieve levels of mass production for a possible reduction in the cost of establishing and determining the dose of radiation sterilization of adult A. sp. 1 aff. fraterculus meeting the quality parameters required by the Sterile Insect Technique with insects from the creation of Radioentomology Laboratory of CENA/USP. Seven experimental diets compared to the conventional diet used in Radioentomology Lab. of CENA/USP, which was used as control. All seven diets have in common the exclusion of agar in its formulation. Only two of the diets tested were suitable for larval development of the fly, they compared with the standard diet, showed inferior results with respect to the volume of recovered larvae, pupae and weight of emergency, however, no significant differences regarding the periods of development , pupal recovery, sex ratio and longevity under stress. It is possible to replace the diet with agar for liquid diets for artificial creation of A. sp. 1 aff. fraterculus, reduced cost and greater convenience of handling, but due to their quality standards lower than the standard diet, more tests are needed especially regarding the adaptability of the insect to the new environment. To determine the sterilizing dose this study examined the

  3. Notes on the present situation of Anastrepha fraterculus in Argentina

    International Nuclear Information System (INIS)

    Manso, F.; Basso, A.

    1999-01-01

    Behavioural and karyotypical results from Anastrepha fraterculus samples received in our laboratory during the period 92-94 are discussed. The work represents the partial situation of this pest in Argentina. Data from guava fruits indicate 1) that the oviposition behaviour does not agree with the autocontrol mechanism via ODP previously described, 2) that a selection mechanism associated to fruit size and quality exists, allowing the female to choose the oviposition site, 3) if different varieties of fruits are available, then the fly shows preference for one of them. The oviposition behaviour in samples of peaches is different from that observed on guava samples and agrees with the ODP mechanism. In some localities, A. fraterculus and C. capitata share the same substrate or fruit (same unit). Samples from commercial oranges do not show evidence of Anastrepha attack. A more frequent karyotype fArg 1 (wild type karyotype) as well as high karyotypic variation, mainly measured through the polymorphism of sexual chromosomes, are present within different geographic populations sharing the same host species. To date, we do not have enough information to associate a particular behaviour to a karyotype. The chromosomal analysis is merely descriptive. (author)

  4. The South American fruit fly, Anastrepha fraterculus (Diptera: Tephritidae) in Colombia

    International Nuclear Information System (INIS)

    Nunez Bueno, L.

    1999-01-01

    Anastrepha fraterculus (Wied) is the most important fruit fly in Colombia. It has been trapped from the sea level up to 2000 m of altitude, but is is more abundant in the coffee growing area located at 1300 to 1700 masl, with temperatures between 18 to 22 deg. C (-min 11 deg. C,-max 25 deg. C). The main host in that area is Coffea arabica L., but it also has 14 additional identified hosts that belong to 9 families. In the hot climates from 0 to 1000 m of altitude it breeds in mango (Mangifera indica L.) and guava (Psidium guayava L:). The pest has not been stabilised in the cultivated upper lands between 2300-2600 masl. (author)

  5. Morphological characterization of the reproductive system of irradiated Anastrepha fraterculus

    Energy Technology Data Exchange (ETDEWEB)

    Bartolucci, Andrea [Instituto de Sanidad y Calidad Agropecuaria de Mendoza (ISCAMEN), Mendoza (Argentina); Vera, M Teresa [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), (Argentina); Yusef, Veronica [Comision Nacional de Energia Atomica (Argentina). Centro Atomico Ezeiza; Oviedo, Andrea [Estacion Experimental Agroindustrial Obispo Colombres (EEAOC), Tucuman (Argentina)

    2006-07-01

    Field identification of released sterile insects is a major issue for eradication and suppression programs. Irradiated flies are normally identified by the presence of a fluorescent dye. When a fly lacks fluorescent dye, determination of gonadal state is necessary to identified between sterile or fertile flies. This is particularly relevant when population levels have decreased. Animal and identification is required to be as unequivocal as possible. Here we describe the reproductive system of irradiated Anastrepha fraterculus of different ages and we compare it with that of fertile flies in order to provide a diagnosis tool. Fertile and irradiated A. fraterculus were dissected from the day of emergence and until 15 days of age. Gross morphology was described and the gonads were measured. Germ cells were visualized in the testis. The reproductive systems of both males and females contained the same structures as other Anastrepha species. From day 1 to day 3, there were no detectable differences between irradiated and fertile males. The growing region encompassed half the testis total length and there was no free sperm in the seminal vesicle. On day 4 the presence of free sperm was seen in the seminal vesicle. At this stage irradiated males started differentiating from fertile ones: the growing region reduced in size and totally disappeared by day 11; sperm bundle zones occupied most of the testis; spermatids lost their triangular shape and sperm remained in the seminal vesicle without moving into the apical region. Testis length and width of irradiated males did not differ from fertile males. In females, the maturation of the ovaries involved a change in size that was more pronounced in the length of the ovary. This became noticeable at day 3. At this stage, the formation of yolk and the basal follicle began in fertile females and the oocyte had the same size as the trophocytes. From this point, the oocyte started growing. After day 8, the maturing oocyte reached

  6. Morphological characterization of the reproductive system of irradiated Anastrepha fraterculus

    International Nuclear Information System (INIS)

    Bartolucci, Andrea; Vera, M. Teresa; Yusef, Veronica

    2006-01-01

    Field identification of released sterile insects is a major issue for eradication and suppression programs. Irradiated flies are normally identified by the presence of a fluorescent dye. When a fly lacks fluorescent dye, determination of gonadal state is necessary to identified between sterile or fertile flies. This is particularly relevant when population levels have decreased. Animal and identification is required to be as unequivocal as possible. Here we describe the reproductive system of irradiated Anastrepha fraterculus of different ages and we compare it with that of fertile flies in order to provide a diagnosis tool. Fertile and irradiated A. fraterculus were dissected from the day of emergence and until 15 days of age. Gross morphology was described and the gonads were measured. Germ cells were visualized in the testis. The reproductive systems of both males and females contained the same structures as other Anastrepha species. From day 1 to day 3, there were no detectable differences between irradiated and fertile males. The growing region encompassed half the testis total length and there was no free sperm in the seminal vesicle. On day 4 the presence of free sperm was seen in the seminal vesicle. At this stage irradiated males started differentiating from fertile ones: the growing region reduced in size and totally disappeared by day 11; sperm bundle zones occupied most of the testis; spermatids lost their triangular shape and sperm remained in the seminal vesicle without moving into the apical region. Testis length and width of irradiated males did not differ from fertile males. In females, the maturation of the ovaries involved a change in size that was more pronounced in the length of the ovary. This became noticeable at day 3. At this stage, the formation of yolk and the basal follicle began in fertile females and the oocyte had the same size as the trophocytes. From this point, the oocyte started growing. After day 8, the maturing oocyte reached

  7. Native and introduced host plants of Anastrepha fraterculus and Ceratitis capitata (Diptera: Tephritidae) in northwestern Argentina.

    Science.gov (United States)

    Ovruski, Sergio; Schliserman, Pablo; Aluja, Martín

    2003-08-01

    Wild or commercially grown, native and exotic fruit were collected in 30 localities in the Tucumán province (NW Argentina) from January 1990 to December 1995 to determine their status as hosts of Anastrepha fraterculus (Wiedemann) and/or Ceratitis capitata (Wiedemann), the only two fruit fly species of economic and quarantine importance in Argentina. A total of 84,094 fruit (3,466.1 kg) representing 33 species (7 native and 26 exotic) in 15 plant families were sampled. We determined the following 17 host plant associations: Annona cherimola Miller (Annonaceae), Citrus paradisi Macfadyn (Rutaceae), Diospyros kaki L. (Ebenaceae), Eugenia uniflora L., Psidium guajava L., Myrcianthes pungens (Berg) Legrand (Myrtaceae), Ficus carica L. (Moraceae), Juglans australis Grisebach (Juglandaceae), Mangifera indica L. (Anacardiaceae), Eriobotrya japonica (Thunb.) Lindl., Prunus armeniaca L., P. domestica L., and P. persica (L.) Batsch (Rosaceae) were infested by both A. fraterculus and C. capitata. Citrus aurantium L., Citrus reticulata Blanco, Citrus sinensis (L.) Osbeck (Rutaceae), and Passiflora caerulea L. (Passifloraceae) were only infested by Ceratitis capitata. Out of a total of 99,627 adults that emerged from pupae, 69,180 (approximately 69.5%) were Anastrepha fraterculus, 30,138 (approximately 30.2%) were C. capitata, and 309 (approximately 0.3%) were an unidentified Anastrepha species. Anastrepha fraterculus predominated in native plant species while C. capitata did so in introduced species. Infestation rates (number of larvae/kg of fruit) varied sharply from year to year and between host plant species (overall there was a significant negative correlation between fruit size and infestation level). We provide information on fruiting phenology of all the reported hosts and discuss our findings in light of their practical (e.g., management of A. fraterculus and C. capitata in citrus groves) implications.

  8. Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) in Tucuman, Argentina

    International Nuclear Information System (INIS)

    Jaldo, H.E.

    1999-01-01

    Full text: In 1916, Rust recorded Anastrepha fraterculus, the ''South American fruit fly (SAFF)'', in Tucuman. Since 1910, the citrus area in the province has increased rapidly and SAFF has become an important pest. New varieties and management practices were also introduced in the region. Guavas (Psidium guajava) and peaches (Prunus persica) were the main host fruits of SAFF in Tucuman, but cherimoya (Anona chirimoya) and apricots (Prunus armeniaca) were also important. After the beginning of rains, populations increase in spring and develop mainly on peaches in November and December. Afterwards, SAFF attacks guava, where a peak population is attained in February or March. Guava is the principal wild host of SAFF in Tucuman. Compared with the forest where guava trees were frequent, citrus orchards covered a small area in the 1920's. Therefore SAFF populations increased in the wild guavas and invaded early oranges and grapefruits afterwards. Even though high numbers of punctures were observed in citrus skin, few larvae developed. The oils present in the skin kill high number of eggs. Moreover the larvae have to go through the albedo and hardly reach the pulp. Nevertheless the injury produced by the ovipositor allows microorganisms to rot the fruit. In 1918, rots produced 50% of damage in fruits which suffered premature ripening and fell. Only in very thin skinned and overripened fruit, larval development was registered. Some authors observed larval development in the field but Schult, in laboratory tests, found few eggs and never registered larval development. Between 1920 and 1945 studies with bait-traps were carried out to establish the seasonal occurrence of the fly and some control measures were tested. Poisoned baits were used against this pest, and biological control by inoculation of parasitoids were also employed. Cages with parasitized pupae were distributed to farmers. The emerged flies were kept within the cage and a sieve allowed the emerged parasites

  9. Large scale artificial rearing of Anastrepha sp.1 aff. fraterculus (Diptera: Tephritidae in Brazil

    Directory of Open Access Journals (Sweden)

    Julio Marcos Melges Walder

    2014-08-01

    Full Text Available Some species of the genus Anastrepha (Diptera: Tephritidae are successfully managed by matching the sterile insect technique with parasitoid releases. Such strategies used in integrated pest management can be implemented only where insect mass-rearing programs are feasible. In this study, we show the process of domestication, rearing technology and quality control data obtained from 54 generations of Anastrepha sp.1 aff. fraterculus (Wiedemann, 1830 kept under fully artificial conditions. Eggs were collected by an artificial oviposition panel consisting of one side of the cage made of blue voile fabric externally covered with a thin layer of silicon rubber. They were then air-bubbled in water at 25 ºC for 48 h before seeding. Larvae were reared on the regular laboratory artificial diet with 66 % of agar reduction turning over a semi-liquid diet, which reduced costs and improved insect quality. The adult and larval diets were composed of local ingredients including hydrolyzed yeast. When large-scale production of this fly is contemplated, the critical stage is larval development. This system of artificial rearing for A. fraterculus sp.1 developed in Brazil, allows for the production of a large number of insects of excellent quality using local ingredients and less agar in diet composition than the original medium used for this species. By reducing the interval of egg collection, the system might be optimized in terms of insect yield and, therefore, meet the demands of A. fraterculus sp.1 with regard to integrated pest management purposes.

  10. Haldane's rule and other aspects of reproductive isolation observed in the Anastrepha fraterculus complex (Diptera: Tephritidae

    Directory of Open Access Journals (Sweden)

    Selivon Denise

    1999-01-01

    Full Text Available Some aspects of reproductive isolation between allopatric populations of two closely related species of the Anastrepha fraterculus complex (A. fraterculus sp. 1 and sp. 2 were evaluated in laboratory conditions. Most of the crosses were fertile in each species as well as between sp. 2 females and sp. 1 males. In the reciprocal cross only 41.7% of the matings yielded viable progeny. Egg hatching occurred at similar rates within the two species, but was significantly lower in the crosses between the species. Adult emergence did not differ significantly among crosses. The sex ratio of adult progeny within each species, as well as in the hybrid progeny derived from sp. 1 females crossed to sp. 2 males, did not differ from the expected 1:1 ratio. However, in the crosses between sp. 2 females to sp. 1 males, a significant deviation in the sex ratio in favor of females was observed, according to the Haldane's rule. The results reinforce previous data which indicated that A. fraterculus sp. 1 and A. fraterculus sp. 2 are distinct biological entities.

  11. X-ray doses to safely release the parasitoid Diachasmimorpha longicaudata (Hymenoptera: Braconidae) reared on Anastrepha fraterculus larvae (Diptera: Tephritidae)

    Czech Academy of Sciences Publication Activity Database

    Bachmann, G. E.; Carabajal Paladino, Leonela Z.; Conte, C. A.; Devescovi, F.; Milla, F. H.; Cladera, J. L.; Segura, D. F.; Viscarret, M. M.

    2015-01-01

    Roč. 25, č. 9 (2015), s. 1092-1103 ISSN 0958-3157 R&D Projects: GA MŠk(CZ) EE2.3.30.0032 Institutional support: RVO:60077344 Keywords : biological control * gamma rays * Anastrepha fraterculus Subject RIV: GF - Plant Pathology, Vermin, Weed, Plant Protection Impact factor: 0.848, year: 2015

  12. Effects of gamma radiation on the ovarian development of the south american fruit fly, Anastrepha fraterculus (Wiedemann, 1830)

    International Nuclear Information System (INIS)

    Mastrangelo, Thiago; Botteon, Victor; Scopel, Wanessa

    2017-01-01

    The South American fruit fly, Anastrepha fraterculus (Wied.) represents 98.5% of the flies captured in commercial apple orchards from Brazil. Looking for environmentally friendly alternatives to suppress this fruit fly pest, researchers from USP and EMBRAPA, along with the Brazilian Association of Apple Producers, created the MOSCASUL Biological Control Center, which intends to apply an Area-Wide Integrated Pest Management Program that integrates the Sterile Insect Technique (SIT). The assurance of sterility of the released flies is a critical assumption of an SIT program, since the unintentional release of thousands of fertile females could cause severe damages to the orchards nearby. Females of A. fraterculus are more radiosensitive than males, but the morphology of the ovaries of the sterile females was not investigated so far. The objective of this study, therefore, was to characterize the morphology of the ovaries of A. fraterculus treated with different doses of gamma radiation. Pupae with 48 h before adult emergence were irradiated with 0 (control), 15, 25, 35, and 45 Gy at the Gammabeam-650® irradiator from CENA/USP. Twelve hours after initial emergence, adults were sorted by sex, and for each radiation dose, 1 day old nonirradiated males were placed with irradiated females of the same age in cages. Adult females were then dissected in a saline solution at 1, 7, and 15 days of age, and the ovaries were examined under stereo microscope. The length, width and area of each ovary were measured from the images made. On the 1 st day after the emergence of the adults, no morphological differences were observed among irradiated and nonirradiated ovaries. On the 7 th day, however, the nonirradiated ovaries showed to be larger than the irradiated ones. Doses of 15 Gy or higher induced complete atrophy of the ovaries and, on the 15 th day, no signs of regeneration of the ovaries were observed. On the last day of observation, the irradiated ovaries presented mean area

  13. Effects of gamma radiation on the ovarian development of the south american fruit fly, Anastrepha fraterculus (Wiedemann, 1830)

    Energy Technology Data Exchange (ETDEWEB)

    Mastrangelo, Thiago; Botteon, Victor, E-mail: piaui@cena.usp.br, E-mail: victor.botteon@usp.br [Centro de Energia Nuclear na Agricultura (CENA/USP), Piracicaba, SP (Brazil); Scopel, Wanessa, E-mail: scopelw@usp.br [Escola Superior de Agricultura Luiz de Queiroz (ESALQ/USP), Piracicaba, SP (Brazil)

    2017-07-01

    The South American fruit fly, Anastrepha fraterculus (Wied.) represents 98.5% of the flies captured in commercial apple orchards from Brazil. Looking for environmentally friendly alternatives to suppress this fruit fly pest, researchers from USP and EMBRAPA, along with the Brazilian Association of Apple Producers, created the MOSCASUL Biological Control Center, which intends to apply an Area-Wide Integrated Pest Management Program that integrates the Sterile Insect Technique (SIT). The assurance of sterility of the released flies is a critical assumption of an SIT program, since the unintentional release of thousands of fertile females could cause severe damages to the orchards nearby. Females of A. fraterculus are more radiosensitive than males, but the morphology of the ovaries of the sterile females was not investigated so far. The objective of this study, therefore, was to characterize the morphology of the ovaries of A. fraterculus treated with different doses of gamma radiation. Pupae with 48 h before adult emergence were irradiated with 0 (control), 15, 25, 35, and 45 Gy at the Gammabeam-650® irradiator from CENA/USP. Twelve hours after initial emergence, adults were sorted by sex, and for each radiation dose, 1 day old nonirradiated males were placed with irradiated females of the same age in cages. Adult females were then dissected in a saline solution at 1, 7, and 15 days of age, and the ovaries were examined under stereo microscope. The length, width and area of each ovary were measured from the images made. On the 1{sup st} day after the emergence of the adults, no morphological differences were observed among irradiated and nonirradiated ovaries. On the 7{sup th} day, however, the nonirradiated ovaries showed to be larger than the irradiated ones. Doses of 15 Gy or higher induced complete atrophy of the ovaries and, on the 15{sup th} day, no signs of regeneration of the ovaries were observed. On the last day of observation, the irradiated ovaries

  14. Análise morfométrica e molecular de morfotipos do complexo fraterculus (Diptera, Tephritidae, Anastrepha) de duas populações do Paraguai 

    OpenAIRE

    Gleidyane Novais Lopes

    2011-01-01

    A alta diversidade observada em Anastrepha fraterculus em toda sua área de distribuição caracteriza a existência do complexo fraterculus. A correta identificação de espécies de Anastrepha aparentadas atualmente exige a utilização de uma série de técnicas. Assim, o presente trabalho propõe verificar quão semelhantes os morfotipos de duas populações do complexo A. fraterculus são, usando dados morfológicos (morfometria tradicional e geométrica) e moleculares (marcadores nucleares e mitocondriai...

  15. Update of host plant list of Anastrepha fraterculus and Ceratitis capitata in Argentina

    International Nuclear Information System (INIS)

    Orono, Luis E.; Albornoz-Medina, Patricia; Nunez-Campero, Segundo; Nieuwenhove, Guido A. van; Bezdjian, Laura P.; Martin, Cristina B.; Schliserman, Pablo; Ovruski, Sergio M.

    2006-01-01

    The study displays a complete picture of the host range of the two economically important fruit fly species in Argentina, the native Anastrepha fraterculus (Wiedemann) (South American Fruit Fly) and the exotic Ceratitis capitata (Wiedemann) (Mediterranean Fruit Fly or Medfly). This work provides information on the fruit type of each plant species, associated tephritid species, habitat where the fruit was collected, geographical location of each fruit collection area (latitude, longitude, and altitude), phyto geographic regions where each area is located, as well as a general description of the landscape characteristics of those habitats where the fruit samples with fly larvae were collected. A complete, detailed bibliographic review was made in order to provide all the relevant information needed for host use in natural setting. (author)

  16. Update of host plant list of Anastrepha fraterculus and Ceratitis capitata in Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Orono, Luis E.; Albornoz-Medina, Patricia; Nunez-Campero, Segundo; Nieuwenhove, Guido A. van; Bezdjian, Laura P.; Martin, Cristina B.; Schliserman, Pablo; Ovruski, Sergio M. [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Tucuman (Argentina). Planta Piloto de Procesos Industriales Microbiologicos y Biotecnologia. Div. Control Biologico de Plagas

    2006-07-01

    The study displays a complete picture of the host range of the two economically important fruit fly species in Argentina, the native Anastrepha fraterculus (Wiedemann) (South American Fruit Fly) and the exotic Ceratitis capitata (Wiedemann) (Mediterranean Fruit Fly or Medfly). This work provides information on the fruit type of each plant species, associated tephritid species, habitat where the fruit was collected, geographical location of each fruit collection area (latitude, longitude, and altitude), phyto geographic regions where each area is located, as well as a general description of the landscape characteristics of those habitats where the fruit samples with fly larvae were collected. A complete, detailed bibliographic review was made in order to provide all the relevant information needed for host use in natural setting. (author)

  17. Fungi that cause rot in bunches of grape identified in adult fruit flies (Anastrepha fraterculus (Diptera: Tephritidae

    Directory of Open Access Journals (Sweden)

    Ruben Machota Jr

    2013-06-01

    Full Text Available Anastrepha fraterculus (Wiedemann is the main species of frugivorous insect that damages berries of table grape (Vitis vinifera L. in Southern Brazil. This study was conducted to isolate and identify the fungi associated with bunch rot present in the body of adults of A. fraterculus collected in a commercial vineyard. From January to February 2011, adults of A. fraterculus were collected from a commercial vineyard of green grapes using adapted McPhail traps. In laboratory, flies bodies were divided into four parts (head, legs, wings, and ovipositor in Petri dishes with PDA medium to evaluate microorganisms associated. Six adult females of A. fraterculus collected in the field were also analyzed in a scanning electron microscope (SEM to identify spores of fungi. Phytopathogenic microorganisms were found in all sectioned parts. Fungal spores were recorded adhered to the body of adult females of A. fraterculus. The main species of fungi found in the body parts of A. fraterculus were Cladosporium spp. (20.2% of the obtained colonies, Botrytis cinerea Pers. (12.9%, Colletotrichum spp. (10.1%, Penicillium spp. (10.1%, Fusarium spp. (7.7%, followed by Rhizopus spp., Trichoderma spp. and Aspergillus spp., suggesting that the insect can serve as a mechanical vector of spores increasing damage in the vineyards.

  18. Demographic and quality control parameters of Anastrepha Fraterculus (Diptera: Tephritidae) maintained under artificial rearing

    International Nuclear Information System (INIS)

    Vera, T.; Abraham, S.; Oviedo, A.; Willink, E.

    2007-01-01

    The integration of the sterile insect technique (SIT) in the management of the South American fruit fly Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) is a promising alternative to chemically-based control in those areas where it is sympatric with Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) or other tephritid species for which the SIT is being used. Implementation of the SIT requires the development of a cost effective mass-rearing protocol. In this work, we present demographic and quality control parameters for the A. fraterculus strain reared at the Estacion Experimental Agroindustrial Obispo Colombres, Tucuman, Argentina. Considering the rearing cage as the reproduction unit, we observed that fecundity is optimal during the first 3 weeks after the onset of oviposition. Fertility was constant during this period. During 2003 and 2004, some improvements were made to the existing rearing protocol, which resulted in increased larval viability, pupal weight, and adult emergence. Current weekly egg production is 1 million per week. These eggs are used to maintain the colony and to assess quality parameters. Finally, research needs leading to improved yields and fly quality are discussed. (author) [es

  19. Taxonomy and phenotypic relationships of the Anastrepha fraterculus complex in the Mesoamerican and Pacific Neotropical dominions (Diptera, Tephritidae)

    Science.gov (United States)

    Hernández-Ortiz, Vicente; Canal, Nelson A.; Salas, Juan O. Tigrero; Ruíz-Hurtado, Freddy M.; Dzul-Cauich, José F.

    2015-01-01

    Abstract Previous morphometric studies based on linear measurements of female structures of the aculeus, mesonotum, and wing revealed the existence of seven morphotypes within the Anastrepha fraterculus cryptic species complex along the Neotropical Region. The current research followed linear and geometric morphometric approaches in 40 population samples of the nominal species Anastrepha fraterculus (Wiedemann) spread throughout the Meso-American and Pacific Neotropical dominions (including Mexico, Central America, Venezuela, Colombia, Ecuador, and Peru). The goals were to explore the phenotypic relationships of the morphotypes in these biogeographical areas; evaluate the reliability of procedures used for delimitation of morphotypes; and describe their current distribution. Findings determined that morphotypes previously recognized via the linear morphometrics were also supported by geometric morphometrics of the wing shape. In addition, we found an eighth morphotype inhabiting the highlands of Ecuador and Peru. Morphotypes are related into three natural phenotypic groups nominated as Mesoamerican-Caribbean lineage, Andean lineage, and Brazilian lineage. The hypothesis that lineages are not directly related to each other is discussed, supported by their large morphological divergence and endemicity in these three well-defined biogeographic areas. In addition, this hypothesis of the non-monophyly of the Anastrepha fraterculus complex is also supported by evidence from other authors based on molecular studies and the strong reproductive isolation between morphs from different lineages. PMID:26798256

  20. Evaluation of Food Lures for Capture and Monitoring of Anastrepha fraterculus (Diptera: Tephritidae) on Temperate Fruit Trees.

    Science.gov (United States)

    Rosa, J M da; Arioli, C J; Santos, J P Dos; Menezes-Netto, A C; Botton, M

    2017-06-01

    The Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) is the main pest of fruit trees grown in temperate climates in the southern region of Brazil. The objective of this work was to evaluate the efficiency of the major commercial food lures used in Brazil for trapping and monitoring of A. fraterculus in plum, pear, and feijoa orchards. The assessed lures were hydrolyzed proteins of animal origin (CeraTrap) and plant origin (BioAnastrepha), torula yeast + borax (Torula), and grape juice. Response variables included the rate of adult capture (flies per trap per day, FTD) and the percentage of females captured. We also evaluated the number of times the weekly capture rate exceeded the traditional threshold of 0.5 FTD for each lure. Traps baited with grape juice, currently used for monitoring A. fraterculus in Southern Brazil, captured fewer adults and a lower percentage of females compared with the other lures. CeraTrap trapped a greater number of A. fraterculus adults and, in some cases, a lower percentage of females compared with the other lures in pears. Traps baited with CeraTrap had greater capture rates (FTD), particularly during the stages of fruit maturation and harvest, and even in years with low population density of A. fraterculus, thus demonstrating greater sensitivity in the detection of this pest. These results show that, in order to detect and monitor the presence of A. fraterculus in plum, feijoa, and pear crops, protein-based lures are superior to grape juice, especially the animal protein CeraTrap. © The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  1. Damage evaluation of Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) on five apple cultivars under laboratory conditions

    International Nuclear Information System (INIS)

    Branco, E.S.; Vendramin, J.D.; Denardi, F.; Nora, I.

    1999-01-01

    The apple production losses in southern Brazil caused by the attack of the fruit fly Anastrepha fraterculus can reach up to 100% in some years. Its control demands intensive systematic sprays of insecticides, which increase production costs and affect environmental quality. In terms of integrated pest management, the use of resistant cultivars represents one of the most important alternatives to control this apple pest. With the objective of identifying sources of host plant resistance, apple fruits of different cultivars from the Clonal Germplasm Repository of the EPAGRI Research Station of Cacador were tested. The experiment consisted of 5 treatments (cultivars) with 5 replicates. Fruits at the harvest stage were used. The fruits were placed in boxes (40x110 cm), where they were exposed to oviposition by the fruit fly. After infestation, fruits were left on shelves at room temperature for 10 days in order to evaluate the damage level according to the following scale: 1 = fruit without attack; 2 = fruit with punctures and/or deformation without galleries; 3 = fruit with punctures and/or deformation and galleries; 4 = fruit with punctures and/or deformations, galleries and larvae. The Gala cultivar was the most susceptible, with an average damage level of 3.4, differing from the cultivars Fuji and Royal Red Delicious (damage levels of 1.6 and 1.2, respectively). The Belgolden and Sansa clones presented intermediate damage levels. A. fraterculus preferred to oviposit in the Golden Delicious group compared with the Delicious group. These studies suggest good possibilities for reduction of insecticide sprays to control the fruit fly in the cv. Fuji, as well as the incorporation of resistance factor in apple cultivars. (author)

  2. Positive and purifying selection influence the evolution of doublesex in the Anastrepha fraterculus species group.

    Directory of Open Access Journals (Sweden)

    Iderval S Sobrinho

    Full Text Available The gene doublesex (dsx is considered to be under strong selective constraint along its evolutionary history because of its central role in somatic sex differentiation in insects. However, previous studies of dsx used global estimates of evolutionary rates to investigate its molecular evolution, which potentially miss signals of adaptive changes in generally conserved genes. In this work, we investigated the molecular evolution of dsx in the Anastrepha fraterculus species group (Diptera, Tephritidae, and test the hypothesis that this gene evolved solely by purifying selection using divergence-based and population-based methods. In the first approach, we compared sequences from Anastrepha and other Tephritidae with other Muscomorpha species, analyzed variation in nonsynonymous to synonymous rate ratios (dN/dS in the Tephritidae, and investigated radical and conservative changes in amino acid physicochemical properties. We show a general selective constraint on dsx, but with signs of positive selection mainly in the common region. Such changes were localized in alpha-helices previously reported to be involved in dimer formation in the OD2 domain and near the C-terminal of the OD1 domain. In the population-based approach, we amplified a region of 540 bp that spanned almost all of the region common to both sexes from 32 different sites in Brazil. We investigated patterns of selection using neutrality tests based on the frequency spectrum and locations of synonymous and nonsynonymous mutations in a haplotype network. As in the divergence-based approach, these analyses showed that dsx has evolved under an overall selective constraint, but with some events of positive selection. In contrast to previous studies, our analyses indicate that even though dsx has indeed evolved as a conserved gene, the common region of dsx has also experienced bouts of positive selection, perhaps driven by sexual selection, during its evolution.

  3. Induction of sterility in Anastrepha Fraterculus (Diptera: Tephritidae) by gamma radiation

    International Nuclear Information System (INIS)

    Allinghi, A.; Gramajo, C.; Willink, E.; Vilardi, J.

    2007-01-01

    In relation to the application of the sterile insect technique (SIT) for the South American fruit fly Anastrepha fraterculus (Wiedemann), we analyzed the effect on adult fertility of different doses of gamma irradiation and the age of pupae at the time of irradiation. In a first experiment, we applied doses of 50, 70, and 90 Gy to pupae at 24, 48, 72, and 96 h before adult emergence. In a second experiment we irradiated pupae 48 h before emergence with 20, 40, and 60 Gy and estimated male and female fertility and sperm transfer by irradiated males. The results indicated pupal age at irradiation does not significantly affect male fertility. If males irradiated with 60 Gy are crossed to non-irradiated females the fertility is about 1%. Females irradiated with 40 Gy did not lay eggs independently of the male to which they mated. No significant effects of radiation were observed with respect to the ability of males to transfer sperm. A dose of 70 Gy applied 48 h before adult emergence induces 100% sterility in both males and females. (author) [es

  4. Sexual selection on multivariate phenotypes in Anastrepha Fraterculus (Diptera: Tephritidae) from Argentina

    International Nuclear Information System (INIS)

    Sciurano, R.; Rodriguero, M.; Gomez Cendra, P.; Vilardi, J.; Segura, D.; Cladera, J.L.; Allinghi, Armando

    2007-01-01

    Despite the interest in applying environmentally friendly control methods such as sterile insect technique (SIT) against Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae), information about its biology, taxonomy, and behavior is still insufficient. To increase this information, the present study aims to evaluate the performance of wild flies under field cage conditions through the study of sexual competitiveness among males (sexual selection). A wild population from Horco Molle, Tucuman, Argentina was sampled. Mature virgin males and females were released into outdoor field cages to compete for mating. Morphometric analyses were applied to determine the relationship between the multivariate phenotype and copulatory success. Successful and unsuccessful males were measured for 8 traits: head width (HW), face width (FW), eye length (EL), thorax length (THL), wing length (WL), wing width (WW), femur length (FL), and tibia length (TIL). Combinations of different multivariate statistical methods and graphical analyses were used to evaluate sexual selection on male phenotype. The results indicated that wing width and thorax length would be the most probable targets of sexual selection. They describe a non-linear association between expected fitness and each of these 2 traits. This non-linear relation suggests that observed selection could maintain the diversity related to body size. (author) [es

  5. Comparison of longevity between a laboratory strain and a natural population of Anastrepha Fraterculus (Diptera: Tephritidae) under field cage conditions

    International Nuclear Information System (INIS)

    Gomez Cendra, P.; Vilardi, J.; Segura, D.; Cladera, J.; Allinghi, A.

    2007-01-01

    The South American fruit fly Anastrepha fraterculus (Wiedemann) is one of the most destructive fruit pests in this region, infesting major fruit crops. Implementation of the sterile insect technique (SIT) as part of an area-wide integrated approach against this species requires information on the survival of mass-reared and sterilized insects in the field and their ability to mate with wild females. The survival rates in field cages of both non-irradiated and irradiated laboratory flies were compared with that of wild flies. Both types of laboratory flies survived longer than their wild counterparts over the 8 days under the experimental conditions. The irradiation dose (70 Gy) did not affect survival of the laboratory reared flies. Our results improve the prospect of integrating the SIT into the control of A. fraterculus populations in Argentina. (author) [es

  6. Development of Anastrepha fraterculus (Diptera: Tephritidae) Related to the Phenology of Blueberry, Blackberry, Strawberry Guava, and Surinam Cherry Fruits.

    Science.gov (United States)

    Bisognin, M; Nava, D E; Diez-Rodríguez, G I; Valgas, R A; Garcia, M S; Krolow, A C R; Antunes, L E C

    2015-02-01

    Anastrepha fraterculus (Wiedemann, 1830) is the main pest of temperate climate orcharding. The study investigated the development of A. fraterculus related to phenological stage of blueberry, blackberry, strawberry guava, and Surinam cherry trees. The phenological stages I (green fruits), II (intermediate ripening stage of fruits), and III (fruits close to harvesting) were determined, and they are from 8th, 10th, and 11th week; 6th, 8th, and 9th week; 8th, 13th, and 16th week; and 5th, 6th, and 7th week after the first flowering of blueberry, blackberry, strawberry guava, and Surinam cherry trees, respectively. We collected fruits from orchards to determine the infestation index using the formula: number of pupa/fruit weight. To investigate the development of A. fraterculus, we determined the following biological parameters: egg-to-adult period, weight of pupae, oviposition period, fecundity, number of pupae, and number of infested fruits. The infestation index for the fruits collected in the field was greater in strawberry guava and Surinam cherry fruits. In the laboratory, the development of A. fraterculus occurred in stage III of blueberry. In blackberry, besides stage III, we also observed the development in stage II, however, at lower infestation. In strawberry guava, the development of A. fraterulus occurred in stages II and III, and the development in both stages was similar. For Surinam cherry, the development occurred in the three phenological stages with similar values for biological parameters. Overall, of the four hosts studied, the strawberry guava and Surinam cherry fruits allowed a better biological development of A. fraterculus, corroborating its preference for fruits native to Brazil. © The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  7. Isolation of entomopathogenic nematodes in an apple orchard in Southern Brazil and its virulence to Anastrepha fraterculus (Diptera: Tephritidae) larvae, under laboratory conditions.

    Science.gov (United States)

    Foelkel, E; Voss, M; Monteiro, L B; Nishimura, G

    2017-03-01

    Entomopathogenic nematodes (EPNs) are a promising alternative to integrated control in many fruit pests. Few studies were made on the relationship of Anastrepha fraterculus natural population with native EPNs population and other biotic and abiotic factors. The aim of this work was to verify the occurrence of endemic nematodes in an apple orchard, concerning environmental conditions and technical procedure, and access isolates virulence to A. fraterculus larvae. The experiment was conducted during a year taking monthly soil samples from an apple orchard, with and without fallen fruits just above the soil. Samples were baited with Tenebrium molitor and A. fraterculus larvae in laboratory. Canopy and fallen fruits were sampled to access the pest infestation. Seventy three EPN isolates were captured, in 23.2% soil samples, more with T. molitor than with A. fraterculus baits. From the 20 isolates tested against A. fraterculus, only five were pathogenic, and they were identified as Oscheius sp. The nematodes were captured during all seasons in a similar frequency. Soil and weather conditions, presence of fruit over the orchard soil, and A. fraterculus pupae in the fruits had no significant influence on the capture. As a conclusion, nematodes of the genera Oscheius are found in an apple orchard of Porto Amazonas constantly along the year, independently of fluctuations in A. fraterculus population, climate conditions and presence of fruit over the soil. Some of the isolates are pathogenic to A. fraterculus.

  8. Compatibility and competitiveness of a laboratory strain of Anastrepha Fraterculus (Diptera: Tephritidae) after irradiation treatment

    International Nuclear Information System (INIS)

    Allinghi, A.; Calcagno, G.; Gomez Cendra, P.; Vilardi, J.C.; Petit-Marty, N.; Segura, D.; Cladera, J.; Vera, T.; Gramajo, C.; Willink, E.

    2007-01-01

    We evaluated under semi-natural field cage conditions sexual compatibility and competitiveness of a laboratory strain (LAB) compared to a wild population (TUC) of Anastrepha fraterculus (Wiedemann). The LAB strain is produced under semi-mass rearing conditions at the Estacion Experimental Agroindustrial Obispo Colombres facility (Tucuman, Argentina). Wild flies were obtained at Horco Molle (Tucuman, Argentina) from infested guava fruits. LAB pupae were irradiated ( 60 Co) 48 h before adult emergence. The tested doses were 0 (control), 40, 70, and 100 Gy. Twenty-five males and 25 females each of TUC and LAB were released into cages and mating pairs collected. Only 1 irradiation dose was considered at a time. Females were separated and allowed to lay eggs into artificial fruits to estimate induced sterility from the corresponding hatching rate. Copulation start time did not differ significantly between strains nor among irradiation treatments. Copulation duration showed highly significant differences among irradiation doses, but no differences between strains. The index of sexual isolation (ISI) and the relative sterility index (RSI) indices indicated that LAB and TUC are fully compatible, males from TUC and LAB did not differ in mating competitiveness, and irradiation within the range tested did not affect these indices. Non-irradiated LAB females exhibited higher mating propensity than TUC ones. However, a significant reduction in the female relative performance index (FRPI) index was observed with increasing irradiation dose. The analysis of induced sterility indicated that treatment with 40 Gy reduces male fertility from about 80% to 0.75%, and higher doses produce total sterility. In females, the 40 Gy dose reduces fertility to about 2% and higher doses prevent egg laying. (author) [es

  9. Nuclear ribosomal internal transcribed spacer 1 (ITS1) variation in the Anastrepha fraterculus cryptic species complex (Diptera, Tephritidae) of the Andean region

    Science.gov (United States)

    Sutton, Bruce D.; Steck, Gary J.; Norrbom, Allen L.; Rodriguez, Erick J.; Srivastava, Pratibha; Alvarado, Norma Nolazco; Colque, Fredy; Landa, Erick Yábar; Sánchez, Juan José Lagrava; Quisberth, Elizabeth; Peñaranda, Emilio Arévalo; Clavijo, P. A. Rodriguez; Alvarez-Baca, Jeniffer K.; Zapata, Tito Guevara; Ponce, Patricio

    2015-01-01

    Abstract The nuclear ribosomal internal transcribed spacer 1 (ITS1) was sequenced for Anastrepha fraterculus (Wiedemann, 1830) originating from 85 collections from the northern and central Andean countries of South America including Argentina (Tucumán), Bolivia, Perú, Ecuador, Colombia, and Venezuela. The ITS1 regions of additional specimens (17 collections) from Central America (México, Guatemala, Costa Rica, and Panamá), Brazil, Caribbean Colombia, and coastal Venezuela were sequenced and together with published sequences (Paraguay) provided context for interpretation. A total of six ITS1 sequence variants were recognized in the Andean region comprising four groups. Type I predominates in the southernmost range of Anastrepha fraterculus. Type II predominates in its northernmost range. In the central and northern Andes, the geographic distributions overlap and interdigitate with a strong elevational effect. A discussion of relationships between observed ITS1 types and morphometric types is included. PMID:26798259

  10. Percepção química e visual de Anastrepha fraterculus (Diptera, Tephritidae em laboratório Chemical and visual perception of Anastrepha fraterculus (Diptera, Tephritidae in laboratory

    Directory of Open Access Journals (Sweden)

    Patrícia L. F. Gregorio

    2010-06-01

    Full Text Available A mosca-das-frutas-sul-americana, Anastrepha fraterculus (Wiedemann, 1830, é uma das principais pragas da fruticultura no Brasil. Durante a alimentação, as larvas fazem galerias nos frutos, alterando o sabor e prejudicando a produção e comercialização dos mesmos. O presente trabalho teve como objetivo estudar fatores envolvidos na escolha do hospedeiro por A. fraterculus. Foram avaliadas as respostas eletroantenográficas de machos e fêmeas a extratos etanólicos de frutos verdes e maduros de pessegueiro - Prunus persica, cultivar Chimarrita (Rosaceae, pitangueira - Eugenia uniflora (Myrtaceae, guabirobeira - Campomanesia xanthocarpa (Myrtaceae e araçazeiro - Psidium cattleianum (Myrtaceae. Foram também observadas as influências da cor (amarela, verde e vermelha e da composição do substrato de oviposição (polpas de araçá, guabiroba, pitanga e pêssego na fecundidade da espécie. As respostas eletroantenográficas de fêmeas foram significativamente distintas para os extratos de guabiroba verde e madura, araçá maduro e pitanga verde. Em antenas de machos, as maiores despolarizações médias foram registradas em resposta aos extratos de guabiroba verde e madura, araçá verde e maduro e pitanga verde. As respostas eletrofisiológicas geradas não diferiram estatisticamente entre os sexos, para todos os tratamentos. A cor do substrato não afetou a oviposição. As fêmeas ovipositaram mais nos substratos contendo polpa de pêssego e de guabiroba, quando comparados aos respectivos controles.The South American fruit fly Anastrepha fraterculus (Wiedemann, 1830 is one of the greatest threats to the fruit growing industry in Brazil. During the feeding process, the larvae build galleries within the fruit, altering the flavor and damaging its production and commercialization. The present work had as its objective to study the factors involved in the choice of the host by A. fraterculus. Electroantennographic responses of the males and

  11. Viabilidad de huevos y modelo de jaula para la cría artificial masiva de Anastrepha fraterculus (Diptera: Tephritidae Viability of eggs and screen cage model for mass artificial rearing of Anastrepha fraterculus (Diptera: Tephritidae

    Directory of Open Access Journals (Sweden)

    Juliana García

    2011-12-01

    Full Text Available El objetivo del presente trabajo fue determinar la viabilidad de huevos y el modelo de jaula apropiada para la cría artificial masiva de Anastrepha fraterculus (Wiedemann. Los resultados muestran que el periodo de máxima oviposición ocurre durante los primeros 10 días en jaulas modelo Mediana, lo cual permite obtener el volumen de huevos necesario para alimentar el pie de cría de A. fraterculus en una cría masiva. Considerando que se encontró relación positiva entre el volumen de huevos ovipositados y el porcentaje de eclosión de huevos, en un periodo de 21 días de colecta, este periodo coincide además con los valores de eclosión más altos. Entre los modelos de jaulas evaluadas: Mediana, Grande y Mission; el modelo Mediana mostró los mejores resultados al evaluar el número de ía con un valor promedio de 11,4. La jaula que mostró menores resultados fue el modelo Mission, con un valor promedio de 4,6 huevos/hembra/día. Las jaulas grandes mostraron valores menores a las jaulas Medianas, pero las diferencias fueron no significativas. Los buenos valores registrados en las jaulas Medianas posiblemente se deban a la estructura de la jaula, que presentó la cara interna dividida en muchos compartimientos, lo cual mejora la distribución de las moscas adultas y previene la mortalidad temprana por hacinamiento en la base o en el techo de la jaula.The aim of this study was to determine the viability of eggs and cage model suitable for artificial mass rearing of Anastrepha fraterculus (Wiedemann. The results show that the period of maximum oviposition occurs during the first 10 days in Medium cages which allows to obtain the necessary volume of eggs to feed the foot of rearing of A. fraterculus in a mass rearing. Considering that a positive relationship was found between the volume of eggs oviposited and the hatchability percentage in a period of 21 days of collection, this period coincides with the highest values of hatching. Among the

  12. Cuticular Hydrocarbons of the South American Fruit Fly Anastrepha fraterculus: Variability with Sex and Age

    Czech Academy of Sciences Publication Activity Database

    Vaníčková, Lucie; Svatoš, Aleš; Kroiss, J.; Kaltenpoth, M.; do Nascimento, R. R.; Hoskovec, Michal; Břízová, Radka; Kalinová, Blanka

    2012-01-01

    Roč. 38, č. 9 (2012), s. 1133-1142 ISSN 0098-0331 Institutional support: RVO:61388963 Keywords : Anastrepha fratercules species complex * cuticular hydrocarbons * sex-specific differences * age-dependent production Subject RIV: CC - Organic Chemistry Impact factor: 2.462, year: 2012

  13. Male Sexual Behavior and Pheromone Emission Is Enhanced by Exposure to Guava Fruit Volatiles in Anastrepha fraterculus.

    Directory of Open Access Journals (Sweden)

    Guillermo E Bachmann

    Full Text Available Plant chemicals can affect reproductive strategies of tephritid fruit flies by influencing sex pheromone communication and increasing male mating competitiveness.We explored whether exposure of Anastrepha fraterculus males to guava fruit volatiles and to a synthetic blend of volatile compounds released by this fruit affects the sexual performance of wild and laboratory flies. By means of bioassays and pheromone collection we investigated the mechanism underlying this phenomenon.Guava volatile exposure enhanced male mating success and positively affected male calling behavior and pheromone release in laboratory and wild males. Changes in male behavior appear to be particularly important during the initial phase of the sexual activity period, when most of the mating pairs are formed. Exposure of laboratory males to a subset of guava fruit volatiles enhanced mating success, showing that the response to the fruit might be mimicked artificially.Volatiles of guava seem to influence male mating success through an enhancement of chemical and physical signals related to the communication between sexes. This finding has important implications for the management of this pest species through the Sterile Insect Technique. We discuss the possibility of using artificial blends to improve the sexual competitiveness of sterile males.

  14. Male Sexual Behavior and Pheromone Emission Is Enhanced by Exposure to Guava Fruit Volatiles in Anastrepha fraterculus

    Science.gov (United States)

    Bachmann, Guillermo E.; Segura, Diego F.; Devescovi, Francisco; Juárez, M. Laura; Ruiz, M. Josefina; Vera, M. Teresa; Cladera, Jorge L.; Fernández, Patricia C.

    2015-01-01

    Background Plant chemicals can affect reproductive strategies of tephritid fruit flies by influencing sex pheromone communication and increasing male mating competitiveness. Objective and Methodology We explored whether exposure of Anastrepha fraterculus males to guava fruit volatiles and to a synthetic blend of volatile compounds released by this fruit affects the sexual performance of wild and laboratory flies. By means of bioassays and pheromone collection we investigated the mechanism underlying this phenomenon. Results Guava volatile exposure enhanced male mating success and positively affected male calling behavior and pheromone release in laboratory and wild males. Changes in male behavior appear to be particularly important during the initial phase of the sexual activity period, when most of the mating pairs are formed. Exposure of laboratory males to a subset of guava fruit volatiles enhanced mating success, showing that the response to the fruit might be mimicked artificially. Conclusions Volatiles of guava seem to influence male mating success through an enhancement of chemical and physical signals related to the communication between sexes. This finding has important implications for the management of this pest species through the Sterile Insect Technique. We discuss the possibility of using artificial blends to improve the sexual competitiveness of sterile males. PMID:25923584

  15. The effects of constant and alternating temperatures on the reproductive potential, life span, and life expectancy of Anastrepha fraterculus (Wiedemann (Dipteria: Tephritidae

    Directory of Open Access Journals (Sweden)

    V. V. CARDOSO

    Full Text Available Ovarian development, oviposition, larval eclosion, ornithine decarboxylase (ODC activity, ovarian, testis and ejaculatory apodeme measurements (length, width, and area, and the number of spermatozoa of Anastrepha fraterculus (Wiedemann were analyzed at alternating (20º/6ºC and 20º/13°C and constant (6°C; 25°C temperatures. Life span and life expectancy were also analyzed for both genders. All the results suggest that temperature, especially alternating temperatures, increase not only male and female reproductive potential but also their life span and life expectancy. These changes can be a powerful strategy triggered by A. fraterculus as a means to survive the stressful temperature conditions found in winter in the apple production region in Brazil, enabling this species to increase its population density and cause apple damage when spring begins.

  16. The effects of constant and alternating temperatures on the reproductive potential, life span, and life expectancy of Anastrepha fraterculus (Wiedemann (Dipteria: Tephritidae

    Directory of Open Access Journals (Sweden)

    CARDOSO V. V.

    2002-01-01

    Full Text Available Ovarian development, oviposition, larval eclosion, ornithine decarboxylase (ODC activity, ovarian, testis and ejaculatory apodeme measurements (length, width, and area, and the number of spermatozoa of Anastrepha fraterculus (Wiedemann were analyzed at alternating (20masculine/6masculineC and 20masculine/13degreesC and constant (6degreesC; 25degreesC temperatures. Life span and life expectancy were also analyzed for both genders. All the results suggest that temperature, especially alternating temperatures, increase not only male and female reproductive potential but also their life span and life expectancy. These changes can be a powerful strategy triggered by A. fraterculus as a means to survive the stressful temperature conditions found in winter in the apple production region in Brazil, enabling this species to increase its population density and cause apple damage when spring begins.

  17. Biodiversidade de moscas-das-frutas do gênero Anastrepha (Diptera, Tephritidae no campus da ESALQ-USP, Piracicaba, São Paulo

    Directory of Open Access Journals (Sweden)

    Keiko Uramoto

    2004-01-01

    Full Text Available Este trabalho foi conduzido na área abrangida pelo campus da Escola Superior de Agricultura Luiz de Queiroz da Universidade de São Paulo, no município de Piracicaba, Estado de São Paulo. Teve como objetivos, determinar a composição do gênero Anastrepha Schiner e verificar a associação das espécies de plantas hospedeiras, estabelecidas na área, com as espécies de Anastrepha. Foram examinadas 23.277 fêmeas de Anastrepha coletadas por meio de armadilhas McPhail e 18 espécies pertencentes a nove grupos de espécies foram registradas. Um total de 563 amostras de frutos pertencentes a nove famílias e, pelo menos, 23 espécies de plantas foi coletado em 47 estações de capturas. Foram identificadas 10.243 fêmeas e das 18 espécies de Anastrepha capturadas em armadilhas somente seis emergiram das amostras de frutos: A. bistrigata Bezzi, A. fraterculus (Wied., A. obliqua (Macquart, A. pseudoparallela (Loew, A. serpentina (Wied. e A. sororcula Zucchi. A. fraterculus infestou maior diversidade de frutos. Os hospedeiros preferidos de A. obliqua foram as espécies da família Anacardiaceae. A. pseudoparallela e A. serpentina infestaram exclusivamente Passifloraceae e Sapotaceae, respectivamente. A. fraterculus é registrada pela primeira vez em sapoti (Manilkara zapota L. no Brasil.Biodiversity of fruit flies of the genus Anastrepha (Diptera, Tephritidae at the ESALQ-USP campus, Piracicaba, São Paulo. The aim of this study was to determine the number of species of Anastrepha Schiner at the campus and to verify the association between host plant species and Anastrepha species in this area. A total of 23,277 females of Anastrepha collected in McPhail traps was examined, and 18 species belonging to nine species groups were recorded. A total of 563 fruit samples representing at least 23 plant species from nine families was collected in 47 capture sites. A total of 10,243 females was identified. Of the 18 Anastrepha species captured in traps

  18. Quarantine cold treatments for Ceratitis capitata and Anastrepha fraterculus (Diptera: Tephritidae) for citrus in Argentina: conclusions after 10 years of research

    International Nuclear Information System (INIS)

    Willink, Eduardo; Gastaminza, Gerardo; Salvatore, Analia; Gramajo, M. Cecilia; Acenolaza, Mariana; Avila, Rosana; Favre, Paola

    2006-01-01

    Argentina has quarantine restrictions in some markets due to the presence of two quarantine fruit fly pests: Ceratitis capitata and Anastrepha fraterculus. One alternative is the use of cold quarantine treatments during transport of the commodities. Since 1996, the Estacion Experimental Agroindustrial Obispo Colombres (EEAOC), Tucuman, Argentina, has developed different cold quarantine treatments for citrus. In the present work we present all the data the EEAOC generated in the last ten years in order to facilitate the development of such cold treatments. Fruit flies were obtained from the colonies reared at EEAOC. Four citrus species were analyzed: lemon, grapefruit, orange and tangerines. Different varieties were analyzed for each fruit species. Sensitivity trials aiming at determine the most tolerant stage as well as to asses if there is any influence of varieties on cold tolerance were performed. Finally we compared the tolerance to cold between the two species. Sensitivity trials showed that mature larvae (L3) are the most tolerant stage for both fruit fly species. There was no effect of the varieties and the two fruit fly species were equally sensible to cold. Our results provide strong evidence in favor of concluding that any cold treatment developed for C. capitata is effective for A. fraterculus. (author)

  19. Quarantine cold treatments for Ceratitis capitata and Anastrepha fraterculus (Diptera: Tephritidae) for citrus in Argentina: conclusions after 10 years of research

    Energy Technology Data Exchange (ETDEWEB)

    Willink, Eduardo; Gastaminza, Gerardo; Salvatore, Analia; Gramajo, M. Cecilia; Acenolaza, Mariana; Avila, Rosana; Favre, Paola, E-mail: ewillink@eeaoc.org.a [Estacion Experimental Agroindustrial Obispo Colombres (EEAOC), Tucuman (Argentina)

    2006-07-01

    Argentina has quarantine restrictions in some markets due to the presence of two quarantine fruit fly pests: Ceratitis capitata and Anastrepha fraterculus. One alternative is the use of cold quarantine treatments during transport of the commodities. Since 1996, the Estacion Experimental Agroindustrial Obispo Colombres (EEAOC), Tucuman, Argentina, has developed different cold quarantine treatments for citrus. In the present work we present all the data the EEAOC generated in the last ten years in order to facilitate the development of such cold treatments. Fruit flies were obtained from the colonies reared at EEAOC. Four citrus species were analyzed: lemon, grapefruit, orange and tangerines. Different varieties were analyzed for each fruit species. Sensitivity trials aiming at determine the most tolerant stage as well as to asses if there is any influence of varieties on cold tolerance were performed. Finally we compared the tolerance to cold between the two species. Sensitivity trials showed that mature larvae (L3) are the most tolerant stage for both fruit fly species. There was no effect of the varieties and the two fruit fly species were equally sensible to cold. Our results provide strong evidence in favor of concluding that any cold treatment developed for C. capitata is effective for A. fraterculus. (author)

  20. Efeito de terra de diatomáceas e óleo essencial de citronela, Cymbopogon nardus (L.) Rendle, sobre a incidência de mosca-das-frutas, Anastrepha fraterculus (Diptera: Tephritidae), em cultivares de ameixeira em sistema orgânico.

    OpenAIRE

    Gonçalves, Paulo Antonio de Souza; Santos, Janaína Pereira dos; Nesi, Cristiano Nunes

    2007-01-01

    A mosca-das-frutas, Anastrepha fraterculus (Diptera: Tephritidae) é considerada uma das principais pragas no sistema de produção orgânica de fruteiras temperadas. O objetivo deste trabalho foi avaliar produtos alternativos sobre a incidência deste inseto em cultivares de ameixeira em sistema orgânico. A pesquisa foi conduzida na Epagri/Estação Experimental de Ituporanga de outubro a janeiro de 2006/2007. Os tratamentos foram (1) terra de diatomáceas 1% associada a óleo essencial de citronela,...

  1. Anastrepha ludens and Anastrepha serpentina (Diptera: Tephritidae) do not infest Psidium guajava (Myrtaceae), but Anastrepha obliqua occasionally shares this resource with Anastrepha striata in nature.

    Science.gov (United States)

    Birke, Andrea; Aluja, Martin

    2011-08-01

    This study examined whether economically important fruit fly species Anastrepha ludens (Loew), Anastrepha serpentina (Wiedemann), and Anastrepha obliqua (Macquart) (Diptera: Tephritidae) may opportunistically exploit guavas, Psidium guajava L. (Myrtaceae), growing near preferred natural hosts. We collected 3,459 kg of guavas and 895 kg of other known host species [sour orange, Citrus aurantium L.; grapefruit, Citrus paradisi Macfadyen; mango, Mangifera indica L.; white sapote, Casimiroa edulis La Llave and Lex.; sapote, Pouteria sapota (Jacq.); sapodilla, Manilkara zapota L.; and wild plum, Spondias purpurea L. and Spondias mombin L.] along an altitudinal gradient over a 4-yr period (2006-2009). Plants were growing in sympatry in 23 localities where the guavas are usually infested in the state of Veracruz, M6xico. The guava samples yielded 20,341 Anastrepha spp. pupae in total (overall mean, 5.88 pupae per kg of fruit). Confirming previous reports, Anastrepha fraterculus (Wiedemann) and Anastrepha striata (Schiner) were found heavily infesting guavas in Veracruz. Importantly, although we did not find evidence that A. ludens and A. serpentina are able to attack this valuable commodity, we document for the first time in the agriculturally important state of Veracruz that P. guajava is an alternative natural host plant of A. obliqua. We recovered two fruit in the mango-growing locality of la Vibora, Tlalixcoyan, that harbored larvae of A. striata and A. obliqua. This finding has important practical implications for management of A. obliqua. Over the entire altitudinal gradient, when individual fruit infestation was examined, a dynamic pattern of species dominance was unveiled with guavas growing below 800 m above sea level mainly attacked by A. striata and a progressive replacement with increasing altitude by A. fraterculus. Interestingly, most individual fruit examined (97%) harbored a single species of fruit fly, a finding that may be taken as evidence of

  2. Primeiro relato de ocorrência de Anastrepha serpentina e Anastrepha leptozona (Dip.: Tephritidae em abiu (Pouteria caimito no Estado de São Paulo

    Directory of Open Access Journals (Sweden)

    Raga Adalton

    2003-01-01

    Full Text Available Foi registrada pela primeira vez a infestação das moscas-das-frutas Anastrepha serpentina (Wied. e Anastrepha leptozona Hendel (Dip.: Tephritidae em abiu Pouteria caimito (Sapotaceae no Estado de São Paulo. Os frutos coletados foram oriundos da Coleção de Fruteiras Nativas e Exóticas, localizada na sede do Pólo Regional de Desenvolvimento Tecnológico do Vale do Ribeira (SP, município de Pariquera-Açu. Também emergiram espécimens de Neosilba glaberrima (Wied. (Lonchaeidae.

  3. Species of Anastrepha (Diptera: Tephritidae) captured in a guava orchard (Psidium guajava L., Myrtaceae) in Boa Vista, Roraima, Brazil.

    Science.gov (United States)

    Marsaro Júnior, A L; Deus, E G; Ronchi-Teles, B; Adaime, R; Silva Júnior, R J

    2013-11-01

    The guava fruit (Psidium guajava) is among the most strongly affected by fruit flies in Brazil. In the Brazilian Amazon, 11 species of Anastrepha have been reported in guava orchards to date. This work aimed to identify the species of Anastrepha present in a guava orchard in the municipality of Boa Vista, determine the species infesting the fruits, and identify any parasitoids present. Two McPhail traps with food bait were installed and weekly collections were made between January and December 2008. Fruits were also collected systematically during this period, with a view to determining the association between host plant and tephritid species. Nine species of Anastrepha were identified, in addition to one specimen belonging to a probable new species. Anastrepha striata Schiner, Anastrepha sororcula Zucchi, Anastrepha obliqua (Macquart), and Anastrepha fraterculus (Wiedemann) were the dominant species in the orchard, accounting for 84.8% of all captured individuals. All females collected directly from fruits were A. striata. Doryctobracon areolatus (Szépligeti) was the only parasitoid species obtained. In this work, Anastrepha ethalea (Walker) is reported for the first time in the state of Roraima.

  4. UTILIZAÇÃO DA ANÁLISE DISCRIMINANTE EM ESTUDOS TAXONÔMICOS DE MOSCAS-DAS-FRUTAS DO GÊNERO Anastrepha Schiner, 1868 (DIPTERA: TEPHRITIDAE

    Directory of Open Access Journals (Sweden)

    ARAUJO E.L.

    1998-01-01

    Full Text Available As moscas-das-frutas Anastrepha fraterculus (Wiedemann, 1830, A. obliqua (Macquart, 1835, A. sororcula (Zucchi, 1979 e A. zenildae (Zucchi, 1979 foram submetidas a uma análise discriminante. Essas espécies do grupo fraterculus distinguem-se unicamente com base em detalhes do ápice do acúleo, que por serem muito semelhantes, dificultam a identificação específica. A análise discriminante permitiu a separação das quatro espécies de Anastrepha, com base em oito medidas do acúleo. Portanto, essa é mais uma técnica para auxiliar as identificações de espécies de Anastrepha, como já acontece em muitos outros grupos de insetos.

  5. Co-Infestation and Spatial Distribution of Bactrocera carambolae and Anastrepha spp. (Diptera: Tephritidae) in Common Guava in the Eastern Amazon

    Science.gov (United States)

    Deus, E. G.; Godoy, W. A. C.; Sousa, M. S. M.; Lopes, G. N.; Jesus-Barros, C. R.; Silva, J. G.; Adaime, R.

    2016-01-01

    Field infestation and spatial distribution of introduced Bactrocera carambolae Drew and Hancock and native species of Anastrepha in common guavas [Psidium guajava (L.)] were investigated in the eastern Amazon. Fruit sampling was carried out in the municipalities of Calçoene and Oiapoque in the state of Amapá, Brazil. The frequency distribution of larvae in fruit was fitted to the negative binomial distribution. Anastrepha striata was more abundant in both sampled areas in comparison to Anastrepha fraterculus (Wiedemann) and B. carambolae. The frequency distribution analysis of adults revealed an aggregated pattern for B. carambolae as well as for A. fraterculus and Anastrepha striata Schiner, described by the negative binomial distribution. Although the populations of Anastrepha spp. may have suffered some impact due to the presence of B. carambolae, the results are still not robust enough to indicate effective reduction in the abundance of Anastrepha spp. caused by B. carambolae in a general sense. The high degree of aggregation observed for both species suggests interspecific co-occurrence with the simultaneous presence of both species in the analysed fruit. Moreover, a significant fraction of uninfested guavas also indicated absence of competitive displacement. PMID:27638949

  6. Capture of Anastrepha species (Diptera: Tephritidae) with multilure traps and biolure attractants in Guatemala

    International Nuclear Information System (INIS)

    Martinez, A.J.; Salinas, E.J.; Rendon, P.

    2007-01-01

    Two trapping systems were compared in a study in Guatemala during the wet season, May through Dec 2001. Trap/lure combinations consisting of green or yellow-based plastic McPhail-like traps baited with a synthetic 2-component lure (putrescine and ammonium acetate) and 300 mL of propylene glycol antifreeze as a preservative were compared to the traditional glass McPhail baited with torula yeast/borax and 300 mL of water. Both systems captured several key Anastrepha species including Anastrepha ludens Loew, A. obliqua, Macquart, A. serpentina Weidemann, A. striata Schiner, A. distincta Greene, A. fraterculus Weidemann as well as Ceratitis capitata Weidemann. Additionally, 13 other Anastrepha spp. were captured with the synthetic lure. The plastic traps captured more key flies than the McPhail trap except for A. distincta where there were no significant differences between the yellow-based plastic trap and the McPhail trap and no significant differences between any trap and lure for trapping A. fraterculus. The synthetic lure lasted 10 weeks. The sex ratio was female-biased for almost all captured key species in both systems. Moreover, there were significant numbers of captured nontarget insects in all traps; however, the captured flies in those traps with the synthetic lure were not adversely affected by these insects. Propylene glycol-based antifreeze was a superior preservative when compared to borax/water. (author) [es

  7. Overlapping and co-occurrence pattern of Anastrepha species (Diptera, Tephritidae in anthropic areas

    Directory of Open Access Journals (Sweden)

    Tayron Sousa Amaral

    2017-12-01

    Full Text Available This study was carried out in two anthropic areas (Fazenda Areão and Monte Olimpo on the “Luiz de Queiroz” campus, University of São Paulo, Piracicaba, SP. We analyzed data from 52 collections of 14 McPhail traps distributed in both areas. A total of 1,583 females belonging to 14 species were collected, including Anastrepha amita Zucchi, A. barbiellinii Lima, A. bistrigata Bezzi, A. daciformis Bezzi, A. distincta Greene, A. fraterculus (Wiedemann, A. grandis (Macquart, A. manihoti Lima, A. montei Lima, A. obliqua (Macquart, A. pickeli Lima, A. pseudoparallela (Loew, A. serpentina (Wiedemann and A. sororcula Zucchi. A greater number of specimens (1,041 were collected at the Fazenda Areão compared to Monte Olimpo (542. The mean niche overlap was greater than expected at random for both areas; therefore, the ecological niches of the species largely overlap. The pattern of co-occurrence indicates that segregation was not random between two pairs of species: A. pseudoparallela × A. obliqua (Fazenda Areão and A. fraterculus × A. pseudoparallela (Monte Olimpo. This segregation suggests that there may be competition for resources in each niche. The analysis also revealed three aggregated species pairs: A. bistrigata × A. montei, A. fraterculus × A. barbiellinii (Fazenda Areão, and A. fraterculus × A. bistrigata (Monte Olimpo, indicating that each pair occurs concomitantly without interfering with the permanence of the populations in these areas.

  8. A review of hymenopterous parasitoid guilds attacking Anastrepha spp. and Ceratitis capitata (Diptera: Tephritidae) in Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Ovruski, Sergio M.; Orono, Luis E.; Nunez-Campero, Segundo; Schliserman, Pablo; Albornoz-Medina, Patricia; Bezdjian, Laura P.; Nieuwenhove, Guido A. Van; Martin, Cristina B. [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Tucuman (Argentina). Planta Piloto de Procesos Industriales Microbiologicos y Biotecnologia. Div. Control Biologico de Plagas

    2006-07-01

    This study provides detailed information on the diversity, abundance, guilds, host plant and host fly ranges, distribution, and taxonomic status of hymenopterous parasitoid species associated with Ceratitis capitata (Wiedemann) and Anastrepha spp. (A. fraterculus (Wiedemann) and A. schultzi Blanchard) in Argentina. Moreover, the article also argues future needs regarding the use of some parasitoid species as an alternative tool in fruit fly management programs of the National Fruit Fly Control and Eradication Program (PROCEM-Argentina). Data used for this work were obtained from numerous old and recent published articles on fruit fly parasitoids in Argentina. (author)

  9. A review of hymenopterous parasitoid guilds attacking Anastrepha spp. and Ceratitis capitata (Diptera: Tephritidae) in Argentina

    International Nuclear Information System (INIS)

    Ovruski, Sergio M.; Orono, Luis E.; Nunez-Campero, Segundo; Schliserman, Pablo; Albornoz-Medina, Patricia; Bezdjian, Laura P.; Nieuwenhove, Guido A. Van; Martin, Cristina B.

    2006-01-01

    This study provides detailed information on the diversity, abundance, guilds, host plant and host fly ranges, distribution, and taxonomic status of hymenopterous parasitoid species associated with Ceratitis capitata (Wiedemann) and Anastrepha spp. (A. fraterculus (Wiedemann) and A. schultzi Blanchard) in Argentina. Moreover, the article also argues future needs regarding the use of some parasitoid species as an alternative tool in fruit fly management programs of the National Fruit Fly Control and Eradication Program (PROCEM-Argentina). Data used for this work were obtained from numerous old and recent published articles on fruit fly parasitoids in Argentina. (author)

  10. Capture of Anastrepha species (Diptera: Tephritidae) with multilure traps and biolure attractants in Guatemala

    Energy Technology Data Exchange (ETDEWEB)

    Martinez, A J; Salinas, E J [USDA-APHIS-PPQ-CPHST, 22675 N. Moorefield Rd, Edinburg, TX 78541-5033 (United States); Rendon, P [USDA-APHIS-PPQ-CPHST, 4a Avenida 12-62, Zona 10, Guatemala City (Guatemala)

    2007-03-15

    Two trapping systems were compared in a study in Guatemala during the wet season, May through Dec 2001. Trap/lure combinations consisting of green or yellow-based plastic McPhail-like traps baited with a synthetic 2-component lure (putrescine and ammonium acetate) and 300 mL of propylene glycol antifreeze as a preservative were compared to the traditional glass McPhail baited with torula yeast/borax and 300 mL of water. Both systems captured several key Anastrepha species including Anastrepha ludens Loew, A. obliqua, Macquart, A. serpentina Weidemann, A. striata Schiner, A. distincta Greene, A. fraterculus Weidemann as well as Ceratitis capitata Weidemann. Additionally, 13 other Anastrepha spp. were captured with the synthetic lure. The plastic traps captured more key flies than the McPhail trap except for A. distincta where there were no significant differences between the yellow-based plastic trap and the McPhail trap and no significant differences between any trap and lure for trapping A. fraterculus. The synthetic lure lasted 10 weeks. The sex ratio was female-biased for almost all captured key species in both systems. Moreover, there were significant numbers of captured nontarget insects in all traps; however, the captured flies in those traps with the synthetic lure were not adversely affected by these insects. Propylene glycol-based antifreeze was a superior preservative when compared to borax/water. (author) [Spanish] En Guatemala, se compararon dos sistemas de trampeo durante la epoca lluviosa de Mayo a Deciembre, 2001. Combinaciones de trampa/atrayente que consistieron de trampas de plastico con bases verdes o amarillos y con atrayentes sinteticos (acetate de amoniaco y putrecina) fueron comparadas con el sistema de trampeo tradicional McPhail de vidrio cebada con torula y borax en agua. Los dos sistemas capturaron moscas del genero Anastrepha incluyendo Anastrepha ludens Loew, A. obliqua, Macquart, A. serpentina Weidemann, A. striata Schiner, A

  11. Foraging behavior of Anastrepha Ludens, A. obliqua, and A. serpentina in response to feces extracts containing host marking pheromone.

    Science.gov (United States)

    Aluja, Martin; Díaz-Fleischer, Francisco

    2006-02-01

    Following oviposition, females of many Tephritid flies deposit host marking pheromones (HMPs) to indicate that the host fruit has been occupied. We describe the foraging behavior of these three economically important species (Anastrepha ludens and A. obliqua from the fraterculus species group and A. serpentina from the serpentina species group) when they encounter an artificial fruit (green agar spheres wrapped in Parafilm) marked with intra- and interspecific feces extracts that contain, among other substances, host marking pheromone. When flies encountered fruit treated with either 1 or 100 mg/ml feces extract, there were drastic and statistically significant reductions in tree residence time, mean time spent on fruit, and in the number of oviposition attempts or actual ovipositions when compared to the control treatment (clean fruit). These responses were almost identical irrespective of extract origin (i.e., fly species), indicating complete interspecific HMP cross-recognition by all three Anastrepha species tested. We discuss the ecological and practical implications of our findings.

  12. Faunistic analysis of Anastrepha spp. (Diptera: Tephritidae) on a guava orchard under organic management in the municipality of Una, Bahia, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Dutra, Vivian S.; Santos, Mirian S; Souza Filho, Zilton A.; Silva, Janisete G. [Universidade Estadual de Santa Cruz (UESC), Ilheus, BA (Brazil). Dept. de Ciencias Biologicas; Araujo, Elton L. [Universidade Federal Rural do Semi-Arido, Mossoro, RN (Brazil). Dept. de Ciencias Vegetais

    2009-01-15

    We carried out a study to characterize fruit fly populations on an organic guava orchard (Psidium guajava cv. Paluma) in the municipality of Una, southern region of the state of Bahia, Brazil, using faunistic analysis of the adult fruit f y specimens captured in McPhail traps from January 2004 through March 2007. A total of 22,673 specimens of Anastrepha (15,306 females and 7,367 males) were captured. Thirteen species of Anastrepha were recorded. A. fraterculus and A. obliqua were the more frequent and dominant species, accounting for 90.1% of all females captured in the traps. A. fraterculus was the predominant species (more frequent, constant and dominant). The high value of the Simpson index (0.62) and the low values of Shannon-Wiener (0.83) and equitability (0.49) indices indicated the dominance and high frequency of A. fraterculus and A. obliqua on the guava orchard despite the presence of other fruit species as potential hosts of fruit flies. (author)

  13. Faunistic analysis of Anastrepha spp. (Diptera: Tephritidae) on a guava orchard under organic management in the municipality of Una, Bahia, Brazil

    International Nuclear Information System (INIS)

    Dutra, Vivian S.; Santos, Mirian S; Souza Filho, Zilton A.; Silva, Janisete G.; Araujo, Elton L.

    2009-01-01

    We carried out a study to characterize fruit fly populations on an organic guava orchard (Psidium guajava cv. Paluma) in the municipality of Una, southern region of the state of Bahia, Brazil, using faunistic analysis of the adult fruit f y specimens captured in McPhail traps from January 2004 through March 2007. A total of 22,673 specimens of Anastrepha (15,306 females and 7,367 males) were captured. Thirteen species of Anastrepha were recorded. A. fraterculus and A. obliqua were the more frequent and dominant species, accounting for 90.1% of all females captured in the traps. A. fraterculus was the predominant species (more frequent, constant and dominant). The high value of the Simpson index (0.62) and the low values of Shannon-Wiener (0.83) and equitability (0.49) indices indicated the dominance and high frequency of A. fraterculus and A. obliqua on the guava orchard despite the presence of other fruit species as potential hosts of fruit flies. (author)

  14. Adult population dynamics of the bolivian fruit flies Anastrepha sp. (Diptera: Tephritidae at Municipality Coroico, Department of The La Paz, Bolivia

    Directory of Open Access Journals (Sweden)

    Gonzáles Manuel

    2011-08-01

    Full Text Available The investigation was carried out in Paco (1603 msnm communities, it Marca (1511 msnm and Capellania (1720 msnm, of the Municipality of Coroico, department of La Paz, Bolivia. In orchards frutícolas semicomerciales, they settled 15 traps distributed McPhail in a similar way among areas, five for community, sampling" "points. The censuses were carried out with an interval of 15 days, they were identified and they quantified the mature flies of the fruit. For the captures of the individuals, they settled the traps McPhail, using the attractive (Buminal one and as conserving borax. The traps were distributed in representative parcels, having as main cultivations, orange, mandarin, grapefruit, guava and avocado. The identification taxonómica of the captured species was carried out in the laboratory of the National Program of Control of Flies of the fruit (PROMOSCA, clerk of the National Service of Agricultural Sanity and Alimentary (SENASAG Inocuidad. 1210 mature flies of the fruit were captures, those that grouped for species, sex, capture dates and community, corresponding to the seven carried out censuses. The species of Anastrepha fraterculus (Wiedeman were identified, Anastrepha striata Schiner, Anastrepha serpentine (Wiedeman, Anastrepha sp, Ceratitis capitata (Wiedemann, Blepharoneura sp Loew, Hexaresta sp Hering, Hexachaeta sp Loew, Tomoplagia sp Coquillett, Tetreuaresta sp Hendel, being that of more presence Anastrepha fraterculus (Wiedeman with 818 and Ceratitis capitata (Wiedemann, with 354. The temperature and presence of spices put up frutícolas of flies of the fruit in maturation state explain the observed fluctuations.

  15. [Fruit flies (Diptera: Tephritidae) and their parasitoids (Hymenoptera: Braconidae) associated to host plants in the southern region of Bahia State].

    Science.gov (United States)

    Bittencourt, M A L; da Silva, A C M; Silva, V E S; Bomfim, Z V; Guimarães, J A; de Souza Filho, M F; Araujo, E L

    2011-01-01

    The association among Anastrepha species, braconid parasitoids and host fruits in southern Bahia is recorded. Doryctobracon areolatus (Szépligeti) was associated with A. serpentina (Wied.) in Pouteria caimito, A. bahiensis Lima in Helicostylis tomentosa, A. sororcula Zucchi in Eugenia uniflora, and A. obliqua (Macquart) in Spondias purpurea. Anatrepha obliqua was unique in fruits of Averrhoa carambola, but associated with D. areolatus, Asobara anastrephae (Muesebeck) and Utetes anastrephae (Viereck). In Achras sapota, A. serpentina was associated with A. anastrephae and D. areolatus, while in Psidium guajava, A. fraterculus (Wied.) and A. sororcula were associated with D. areolatus and U. anastrephae.

  16. Parasitóides (Braconidae associados à Anastrepha (Tephritidae em frutos hospedeiros do litoral sul da Bahia Parasitoids (Braconidae associated with Anastrepha (Tephritidae in host fruits on the southern coast of Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Maria Aparecida Leão Bittencourt

    2012-12-01

    Full Text Available Dentre os organismos que atuam no controle biológico natural dos tefritídeos, os representantes da família Braconidae constituem-se no mecanismo de parasitismo natural mais atuante, e na região Neotropical, representantes de Opiinae são os principais agentes de controle de Anastrepha. Este trabalho teve por objetivo conhecer a percentagem de parasitismo e as espécies de braconídeos associados às fruteiras cultivadas em municípios da região Litoral Sul da Bahia. No período de agosto de 2005 a março de 2008, coletaram-se frutos hospedeiros de moscas-das-frutas de diversas espécies botânicas, e dos frutos foram obtidas as seguintes espécies de Anastrepha: A. fraterculus, A. obliqua, A. bahiensis, A serpentina, A. sororcula e A. zenildae. Do total de 838 exemplares de braconídeos, 21,36% foram da espécie Utetes anastrephae (Viereck, provenientes de cajá, carambola, goiaba, manga e pitanga; 4,42% da espécie Asobara anastrephae (Muesebeck obtidos dos frutos de cajá, carambola e goiaba, e apenas um exemplar da espécie Opius bellus Gahan (0,12% que emergiu da amostra de goiaba. A espécie Doryctobracon areolatus (Szépligeti (74,10% foi predominante e emergiu dos pupários provenientes de todos os frutos hospedeiros coletados, provavelmente pela maior eficiência desta espécie em localizar as larvas dos tefritídeos. A percentagem média de parasitismo de Anastrepha spp. foi de 4,45%.Among the organisms acting in the natural biological control of tephritids, members of the family Braconidae are the most active form of natural parasite, and in Neotropical regions, members of Opiinae are the main control agents of Anastrepha. The objective of this work was to discover the percentage of parasitism and the species of braconid associated with fruit trees growing in cities on the southern coast of Bahia. During the period of August, 2005 to March, 2008, hosts fruits of fruit flies from several plant species were collected and from the

  17. Intraspecific variation of cuticular hydrocarbon profiles in the Anastrepha fraterculus (Diptera: Tephritidae) species complex

    Czech Academy of Sciences Publication Activity Database

    Vaníčková, Lucie; Břízová, Radka; Mendonca, A. L.; Pompeiano, A.; do Nascimento, R. R.

    2015-01-01

    Roč. 139, č. 9 (2015), s. 679-689 ISSN 0931-2048 Institutional support: RVO:61388963 Keywords : chemotaxonomy * GCxGC/TOFMS * multiple factorial analyses * putative species * South American fruit fly Subject RIV: CB - Analytical Chemistry, Separation Impact factor: 1.517, year: 2015

  18. Identification of male-borne attractants in Anastrepha fraterculus (Diptera: Tephritidae)

    Czech Academy of Sciences Publication Activity Database

    Milet-Pinheiro, P.; Navarro, D. M. A.; De Aquino, N. C.; Ferreira, L. L.; Tavares, R. F.; Correia da Silva, R. C.; Lima-Mendonca, A.; Vaníčková, Lucie; Mendonca, A. L.; do Nascimento, R. R.

    2015-01-01

    Roč. 25, č. 3 (2015), s. 115-122 ISSN 0937-7409 Institutional support: RVO:61388963 Keywords : South American fruit fly * sexual pheromone * male-borne attractants * GC-EAD * behavioral activity Subject RIV: CC - Organic Chemistry Impact factor: 1.863, year: 2015

  19. Pheromone analyses of the Anastrepha fraterculus (Diptera: Tephritidae) cryptic species complex

    Czech Academy of Sciences Publication Activity Database

    Břízová, Radka; Mendonca, A. L.; Vaníčková, L.; Mendonca, Al. L.; Da Silva, C. E.; Tomčala, Aleš; Paranhos, B. A. J.; Dias, V. S.; Joachim-Bravo, I. S.; Hoskovec, Michal; Kalinová, Blanka; do Nascimento, R. R.

    2013-01-01

    Roč. 96, č. 3 (2013), s. 1107-1115 ISSN 0015-4040 Institutional support: RVO:61388963 Keywords : South American fruit fly * GCxGC/TOE-MS * principal component analysis (PCA) Subject RIV: CC - Organic Chemistry Impact factor: 1.056, year: 2013

  20. Current knowledge of the species complex Anastrepha fraterculus (Diptera, Tephritidae) in Brazil

    Czech Academy of Sciences Publication Activity Database

    Vaníčková, Lucie; Hernández-Ortiz, V.; Bravo, I. S. J.; Dias, V.; Roriz, A. K. P.; Laumann, R. A.; Mendonca, A. L.; Paranhos, B. A. J.; do Nascimento, R. R.

    -, č. 540 (2015), s. 211-237 ISSN 1313-2989 Institutional support: RVO:61388963 Keywords : South American fruit fly * cryptic species * taxonomy * sexual behavior * chemical communication Subject RIV: EG - Zoology Impact factor: 0.938, year: 2015 http://zookeys.pensoft.net/articles.php?id=6228

  1. Especies, distribución y hospedantes del género Anastrepha Schiner en el departamento del Tolima, Colombia

    Directory of Open Access Journals (Sweden)

    Castañeda Marìa del Rosario

    2010-08-01

    Full Text Available Las moscas del género Anastrepha constituyen una de las principales
    plagas de la fruticultura colombiana. El conocimiento
    de la diversidad de especies presentes en un área es el primer
    paso en el diseño de estudios tendientes a establecer tecnologías
    apropiadas de manejo. Además de un listado de las especies de
    Anastrepha identificadas en el Laboratorio de Entomología de
    la Universidad
    del Tolima desde 1988 hasta la fecha a través de
    diversos estudios realizados en este departamento, el presente
    trabajo incluye también la distribución y hospederos de dichas
    especies provenientes de diez municipios del departamento,
    con alturas entre 300 y 2.500 msnm. Se identificaron 60.688
    especímenes pertenecientes a 24 especies de Anastrepha.
    Mediante la recolección de frutos se asociaron 16 especies de
    hospederos (incluyendo
    cinco nuevos reportes a nueve especies
    de Anastrepha. Las especies A. distincta Greene, A. sororcula
    Zucchi y A. striata Schiner fueron las que presentaron una
    distribución altitudinal más amplia (300 a 2.200 msnm. Por
    su parte, A. obliqua solo se encontró desde los 300 hasta los
    1.550 msnm. Especies de importancia cuarentenaria como A.
    fraterculus (Wiedemann, A. grandis Macquart y A. serpentina
    (Wiedemann se encontraron por arriba de los 1.100, 960 y 900
    msnm, respectivamente.

  2. Primeiro registro de Trichopria anastrephae, parasitoide de moscas-das-frutas, no Rio Grande do Sul First record of Trichopria anastrephae, parasitoid of fruit flies, in the Rio Grande do Sul State, Brazil

    Directory of Open Access Journals (Sweden)

    Patrícia Postalli Cruz

    2011-08-01

    Full Text Available Existem poucas informações sobre as espécies nativas de himenópteros parasitoides de moscas-das-frutas da Região Neotropical, o que objetivou a realização do presente trabalho. Assim, coletas de goiaba (Psidium guajava L. foram realizadas de janeiro a março de 2009 na Área Experimental em Estudos de Produção Agroecológica (AEEPA da Universidade Federal de Pelotas, no município de Capão do Leão, Rio Grande do Sul. Os frutos foram levados ao laboratório, contados, pesados e acondicionados individualmente em potes plásticos contendo areia umedecida e telado na parte superior. Semanalmente, o substrato foi peneirado, os pupários recolhidos e acondicionados em placas de Petri com papel filtro umedecido com água destilada. Os pupários foram mantidos em sala climatizada (26±2°C, 60±10% de umidade relativa e 12h fotofase onde foram efetuadas observações semanais para verificar a emergência de moscas e/ou parasitoides e posterior identificação das espécies. Trichopria anastrephae Lima (Hymenoptera: Diapriidae foi obtida de pupários de Anastrepha fraterculus, com parasitismo de 5,8%.There is little information on native species of hymenopteran parasitoids of fruit flies from the Neotropical region. Collections of guava (Psidium guajava L. were conducted from January to March 2009 at the Experimental Area of Agroecological Production studies (AEEPA, Federal University of Pelotas, Capão do Leão, Rio Grande do Sul. Fruits were taken individually to the laboratory, counted, weighed and packaged in plastic pots containing moist sand and mesh on top. Weekly substrate was sieved, the pupae collected and placed in Petri dishes with filter paper moistened with distilled water. The pupae were placed in a room (26±2°C, 60±10% RH and 12h photophase where observations were made weekly to check the emergence of adult flies or parasitoids and subsequent species identification. Trichopria anastrephae Lima was obtained from Anastrepha

  3. Wie heeft de prijs gewonnen?

    NARCIS (Netherlands)

    Bas Jongenelen

    2012-01-01

    In 1524 publiceert Jan van Doesborch een bundel met refereynen. Een ervan gaat over een schetenwedstrijd tussen begijnen. Dit refereyn heb ik op 16e-eeuwse wijze voorgedragen op 21e-eeuwse muziek: http://itunes.apple.com/nl/album/wie-heeft-de-prijs-gewonnen-1/id512331302?i=512331322&ign-mpt=uo%3D4

  4. Wie Nationalismus das Geschlecht macht

    Directory of Open Access Journals (Sweden)

    Ruben Marc Hackler

    2006-07-01

    Full Text Available Heidrun Zettelbauer untersucht in ihrer Dissertation den Zusammenhang von Geschlecht und Nation in den völkischen Diskursen der Habsburgermonarchie zwischen 1880 und 1918. Anhand von Vereinspublikationen weist sie überzeugend nach, wie geschlechtsspezifische Zuschreibungen durch die nationalistische Bewegung befestigt und vorangetrieben worden sind. Gleichzeitig zeigt sie, dass die Bewegung auf die Integration von Frauen angewiesen war, was die Möglichkeit für Frauen bot, sich im Verein politisch zu betätigen und so die bürgerliche Auffassung weiblicher Subjektivität zu unterlaufen.

  5. Characterisation of the chemical profiles of Brazilian and Andean morphotypes belonging to the Anastrepha fraterculus complex (Diptera, Tephritidae)

    Czech Academy of Sciences Publication Activity Database

    Vaníčková, Lucie; Břízová, Radka; Pompeiano, A.; Ferreira, L. L.; De Aquino, N. C.; Tavares, R. F.; Rodriguez, L. D.; Mendonca, A. L.; Canal, N. A.; do Nascimento, R. R.

    -, č. 540 (2015), s. 193-209 ISSN 1313-2989 Institutional support: RVO:61388963 Keywords : cryptic species * chemotaxonomy * GCxGC/MS * PCA Subject RIV: EG - Zoology Impact factor: 0.938, year: 2015 http://zookeys.pensoft.net/articles.php?id=6224

  6. Nonhost status of commercial Persea americana 'Hass' to Anastrepha ludens, Anastrepha obliqua, Anastrepha serpentina, and Anastrepha striata (Diptera: Tephritidae) in Mexico.

    Science.gov (United States)

    Aluja, Martín; Díaz-Fleischer, Francisco; Arredondo, José

    2004-04-01

    The objective of this study was to determine the host status in Mexico of commercially cultivated and marketed avocado, Persea americana (Mill.), 'Hass' to Anastrepha ludens (Loew), Anastrepha obliqua (Macquart), Anastrepha serpentina (Wiedemann), and Anastrepha striata (Schiner) (Diptera: Tephritidae). Experiments in Michoacán, Mexico, were carried out in six orchards located at three altitudes above sea level during two times (August-October 2001 and April-June 2002). They included choice ('Hass' avocado plus natural host) and no-choice foraging behavior tests on trees under field cages; no-choice, forced infestation trials on caged, fruit-bearing branches in the field, and with individual fruit under laboratory conditions; infestation trials using 'Hass' avocados left unprotected over 1 and 7 d on the ground of orchards; studies to ascertain depth of oviposition and determine egg hatchability; and experiments to determine susceptibility by using time elapsed since removal of fruit from tree as the experimental variable. We trapped adult Anastrepha (n = 7,936) in all orchards and dissected fruit (n = 7,695) from orchards and packing houses (n = 1,620) in search of eggs or larvae. Most (96.7%) A. ludens, A. obliqua, A. striata, and A. serpentina adults were captured in low-elevation orchards. No eggs or larvae were detected in any of the fruit from foraging behavior studies or dissected fruit from orchards or packing houses. Of 5,200 mature, intact fruit on trees in the field forcibly exposed to no-choice female oviposition activity (five females/fruit), we only found four fruit infested by A. ludens but no adults emerged. 'Hass' avocados only became marginally susceptible to attack by A. ludens (but not A. obliqua, A. serpentina, and A. striata) 24 h after being removed from the tree. Fruit placed on the ground in orchards (n = 3,600) were occasionally infested by Neosilba batesi (Curran) (Diptera: Lonchaeidae), a decomposer, but not Anastrepha spp. Based on our

  7. Host status of grapefruit and Valencia oranges for Anastrepha serpentina and Anastrepha ludens

    Science.gov (United States)

    Anastrepha serpentina, known as the zapote fly or serpentine fruit fly, is occasionally captured in the Rio Grande Valley of Texas. Lists of host plants for this species include several species of citrus, such as oranges and grapefruit. Current regulatory procedures require quarantines and treatme...

  8. Standardization of Ceratitis capitata Wied. (Diptera: Tephritidae) female trapping for use in sterile insect programmes. Catamarca, Argentina, 1995-1997

    International Nuclear Information System (INIS)

    Vattuone, M.

    1999-01-01

    The main objective of the study was to assess Ceratitis capitata Wied. (medfly) female trapping with new traps and attractants in varying ecological conditions as part of a co-ordinated international programme. Trials were carried out between 1995 and 1997, using seven types of traps baited with the various combination of sexual and food attractants. Different methods for insects retention were also tested. For these trials, protocols established by the International Atomic Energy Agency were followed. The Jackson Trap with Trimedlure plugs proved to be the most efficient for capture of medfly males, while International Pheromone's McPhail Trap was the most efficient for the capture of females, when used with a combination of all three new attractants (FA-3) consisting of ammonium acetate, putrescine, and trimethylamine plus the toxicant DDVP for insect retention. The new traps and attractants also captured flies belonging to genus Anastrepha (Diptera: Tephritidae). (author)

  9. 7 CFR 305.2 - Approved treatments.

    Science.gov (United States)

    2010-01-01

    ... T102-a. Anastrepha ludens, Anastrepha obliqua, Anastrepha serpentina FHA T103-c-1. Okra Pectinophora... tangelos Anastrepha fraterculus, A. obliqua, A. serpentina, and Ceratitis capitata CT T107-a-1 Mango...

  10. Preliminary studies for the colonization of Anastrepha obliqua and Anastrepha serpentina (Diptera: Tephritidae)

    International Nuclear Information System (INIS)

    Celedonio H, H.; Enkerlin H, W.; Bruzzone, D.

    1999-01-01

    A series of trials were carried out with the aim of collecting preliminary data for the colonization of Anastrepha obliqua and Anastrepha serpentina. Trials were focused on evaluating adequate oviposition media as well as their effect on fly demographic parameters; the effect of cage population densities on demographic parameters was also considered; for A. serpentina, egg disinfection treatments by organic acids was assayed, and a screening study was carried out for suitable pupation media. Nylon-made egging mesh resulted in the most efficient oviposition medium, while low insect densities provided the best conditions for increased rates of fly fertility. Organic acids (methyl-p-hydroxy-benzoic) were found to hamper egg hatch, while a variety of pupation media provided improved fly emergence rates vs. the naked pupation method. (author)

  11. Development of attractant systems for trapping female Ceratitis capitata (Wied.) (Diptera: Tephritidae) in the Soconusco region, Chiapas, Mexico

    International Nuclear Information System (INIS)

    Montoya, P.; Miranda, H.; Paxtian, J.; Celedonio, H.; Orozco, D.

    1999-01-01

    With the aim of developing a system of attractants and trapping to optimize the capture of female Mediterranean fruit flies, Ceratitis capitata (Wied.) as well as other fruit flies, six experiments were carried out during the period 1994-1997, in a sterile-insect release zone in the Soconusco region of Chiapas, Mexico. Relating to the system of attractants, the evaluation focused on the comparison of food attractants (i.e. ammonium acetate, putrescine and trimethylamine) with standard attractants, such as Trimedlure and liquid hydrolyzed protein. For the trapping system, dry traps (Jackson trap, Open bottom dry trap, etc.) as well as wet traps (McPhail trap, Tephri trap, etc.) were tested alternately with the different kinds of attractants. The experiments were performed in agrosystems of coffee and groves of citrus and mango. Results consistently showed that a combination of ammonium acetate + putrescine + trimethylamine was the best for the capture of female Ceratitis capitata (Wied.) when used in traps such as the OBDT and the plastic McPhail trap (IPMT), while for Anastrepha spp., the McPhail trap baited with liquid hydrolyzed protein still appears to be the best option, although the combination of ammonium acetate with putrescine was quite consistent in the trapping of A. obliqua and A. ludens in traps such as the IPMT. (author)

  12. Analysis of host preference and geographical distribution of Anastrepha suspensa (Diptera: Tephritidae) using phylogenetic analyses of mitochondrial cytochrome oxidase I DNA sequence data.

    Science.gov (United States)

    Boykin, L M; Shatters, R G; Hall, D G; Burns, R E; Franqui, R A

    2006-10-01

    Anastrepha suspensa (Loew) is an economically important pest, restricted to the Greater Antilles and southern Florida. It infests a wide variety of hosts and is of quarantine importance in citrus, a multi-million dollar industry in Florida. The observed recent increase in citrus infested with A. suspensa in Florida has raised questions regarding host-specificity of certain populations and genetic diversity of the pest throughout its geographical distribution. Cytochrome oxidase I (COI) DNA sequence data was used to characterize the genetic diversity of A. suspensa from Florida and Caribbean populations reared from different host plants. Maximum likelihood and Bayesian phylogenetic methods were used to analyse COI data. Sequence variation among mitochondrial COI genes from 107 A. suspensa samples collected throughout Florida and the Caribbean ranged between 0 and 10% and placed all A. suspensa as a monophyletic group that united all A. suspensa in a clade sister to a Central American group of the A. fraterculus paraphyletic species complex. The most likely tree of the COI locus indicated that COI sequence variation was too low to provide resolution at the subspecies level, therefore monophyletic groups based on host-plant use, geography (Florida, Jamaica, Cayman Islands, Puerto Rico or Dominican Republic) or population sampled are not supported. This result indicates that either no population segregation has occurred based on these biological or geographical distinctions and that this is a generalist, polyphagous invasive genotype. Alternatively, if populations are distinct, the segregation event was more recent than can be distinguished based on COI sequence variation.

  13. Contribución al Estudio de las Moscas Anastrephas en Colombia.

    Directory of Open Access Journals (Sweden)

    González Mendoza Rafael

    1952-11-01

    Full Text Available 1. Colombia tiene amplias posibilidades de desarrollar una industria frutícola floreciente dadas las excepcionales condiciones de ubicación geográfica, diversidad de climas y de suelos. 2. La deficiente producción frutera actual es el resultado de una reunión de factores adversos, entre los que resalta el desconocimiento de los problemas científicos que afectan a dicha industria. En este aspecto, los problemas fitosanitarios, abandonados y faltos de investigación, ocupan lugar preponderante. 3. Las moscas Anastrephas constituyen la plaga más importante de la fruticultura nacional, y por esta razón, un estudio sobre estos insectos es un tema de importancia. 4. Las principales "moscas de las frutas" pertenecen dentro de la familia Trypetidae, a los géneros: Dacus, Rhaglethis, Ceratitis, Dactrocera y Anastrepha. 5. Los nombres comunes con que se conocen las moscas Anastrephas varían de un país a otro y se relacionan particularmente con el lugar de origen de las distintas especies o la fruta determinada como preterida por la mosca en una localidad. En Colombia la denominación vernácula más difundida es la de "gusano de las frutas". También se nombra el insecto como "mosca o gusano del mango" o "gusano de la guayaba". 6. Los nombres científicos de las moscas distinguen a una, gran cantidad de especies. En Colombia, varios autores han reportado la existencia de las especies A.fraterculus, A. ludens, A. mombinpracoptans, A. pikeli y A. serpentina. Todas estas especies inciden en las regiones colombianas comprendidas entre 0 y 2000 metros de altura, es decir, en casi todas las regiones agrícolas importantes (frutales, café, cacao de temperaturas entre 14° y 30° C. 7. Las moscas Anastrephas están confinadas casi exclusivamente al continente americano entre las latitudes 27° N. y 35° S. Particularmente, la especie A. fraterculus, una de las más difundidas en Colombia, fué determinada por Wiedemann (1830

  14. The fruitfly Anastrepha serpentina in Curaçao

    NARCIS (Netherlands)

    Burgers, A.C.J.

    1953-01-01

    On a private collecting trip to the Netherlands Antilles, in the winter of 1948—1949, I had the opportunity of studying an infestation of the sapodilla, caused by a well-known kind of fruitfly, Anastrepha serpentina, which, however, has never before been reported from these islands. The

  15. Host status of grapefruit and Valencia oranges for Anastrepha serpentina and Anastrepha ludens (Diptera: Tephritidae).

    Science.gov (United States)

    Mangan, Robert L; Thomas, Donald B; Moreno, Aleena M Tarshis

    2011-04-01

    Anastrepha serpentina (Wiedemann) (Diptera: Tephritidae) is sporadically captured in the Rio Grande Valley of Texas. Although its preferred hosts are in the Sapotaceae family, several varieties of Citrus, including grapefruit and oranges are listed as alternate hosts. Although Mexican fruit fly, Anastrepha ludens (Loew), is known to be a major pest of Citrus, doubt exists as to the status of Citrus as a breeding host for A. serpentina. To evaluate the host status of commercial Citrus for A. serpentina we compared oviposition and development with that of A. ludens under laboratory conditions with 'Rio Red' grapefruit (Citrus paradisi MacFayden) and 'Valencia' oranges [Citrus sinensis (L.) Osbeck] in different stages of maturity. Both fly species oviposited in early season fruit in which the eggs and larvae died in the fruit albedo. Survival of either species to the adult stage occurred in later season grapefruit. In oranges, no A. serpentina larvae survived compared with 150 A. ludens surviving to adults. Survival on both Citrus species was much lower for A. serpentina, only approximately 5% of eggs eclosed into larvae in grapefruit compared with approximatley 50% for A. ludens. In oranges approximately 16% of A. serpentina eggs eclosed compared with approximately 76% for A. ludens. In grapefruit, only one fourth as many A. serpentina larvae survived to the adult stage compared with A. ludens. Additional experiments were performed in a greenhouse on small, caged trees of la coma (Sideroxylon celastrinum H.B.K.), a Texas species of Sapotaceae. The A. serpentina females readily oviposited into these berries and normal adults emerged. The present low incidence of the adults, coupled with the high mortality during development of the larvae, suggests that Texas citrus is unlikely to support a breeding population of A. serpentina.

  16. Dispersal and longevity of wild and mass-reared Anastrepha Ludens and Anastrepha Obliqua (Diptera: Tephritidae)

    International Nuclear Information System (INIS)

    Hernandez, E.; Orozco, D.; Flores Breceda, S.; Dominguez, J.

    2007-01-01

    The rates of dispersal and survival of sterile mass-reared laboratory flies and sterile wild flies of Anastrepha ludens (Loew) and Anastrepha obliqua (Macquart) were estimated and compared with a regular rectangular array of 64 food-baited traps spaced 60 m between traps around the release point in Tapachula Chiapas, Mexico. The traps were scored every day during the first week, and then every 3 d over a 30-d period. For A. obliqua, the number of males recaptured was higher than that of females, while for A. ludens, females were recaptured more frequently than males. The recapture rate for the wild strains ranged from 0.6-24.8% for A. ludens and 1.3-16.2% for A. obliqua and the corresponding ranges for the mass-reared strains were 0.5-7.1% and 0.5-3.0% respectively. The life expectancy was 4.7 d for wild and 4.3 d for mass-reared A. obliqua males but 3 and 2 d, respectively, for wild and mass-reared A. ludens males. The net displacement of A. ludens and A. obliqua ranged approximately from 100-250 m and took place mostly on the first day. Wild A. ludens moved to the northwest from the release point while the mass-reared strain moved to the west. The A. obliqua wild flies moved to the west, while the mass-reared strain shifted to the southwest. We discuss the implications of our findings as to the spacing and frequency of sterile fly releases for the suppression of wild populations. (author) [es

  17. OCORRÊNCIA E ÍNDICE DE INFESTAÇÃO DE Anastrepha spp. (DIP., TEPHRITIADE EM Pouteria gardneriana Radlk. E Pouteria ramiflora (Mart. Radlk. (SAPOTACEAE, NOS CERRADOS DE GOIÁS OCCURENCE AND INFESTATION INDEXES OF Anastrepha spp. (DIP., TEPHIRITIDAE IN Pouteria gardneriana RADLK AND Pouteria ramjflora (MART. RADLK. (SAPOTACEAE IN “CERRADOS” OF THE STATE OF GOIÁS, BRAZIL

    Directory of Open Access Journals (Sweden)

    Nelson Augusto Canal Daza

    2007-09-01

    Full Text Available

    Dentre as frutíferas nativas dos cerrados goianos destacam-se as do gênero Pouteria, com ampla distribuição nas regiões tropicais e subtropicais de todo o mundo, sendo a P. ramiflora (curriola a mais comum. Pouteria gardneriana (guapeva ocorre geralmente nos solos mais úmidos, sempre agrupada na faixa de separação cerrados-veredas. Dos 25 municípios do Estado de Goiás amostrados, em nove foi registrada a ocorrência dessas duas espécies de Pouteria, cujos frutos são bastante suscetíveis ao ataque de moscas-das-frutas. Dos frutos de guapeva e curriola, emergiram adultos de Anastrepha (99,82% e apenas alguns exemplares de Ceratitis capitata (0,18%. As espécies coletadas em P. gardneriana foram: Anastrepha bistrigata, A. fraterculus, A. leptozona, A. serpentina, A. zenildae, A. zernyi e C. capitata. De P. ramiflora foram obtidas: A. fraterculus, A. leptozona, A. serpentina e A. zernyi. Dos pupários de Anastrepha

  18. Synthetic attractants for Anastrepha fruit flies in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Gomez-Simuta, Y; Flores-Breceda, S; Lppez-Munoz, L [Subdireccion de Desarrollo de Metodos, Programa Moscamed, Tapachula, Chiapas (Mexico)

    2007-10-15

    The efficacy of synthetic attractants in the capture of Anastrepha fruit flies (Anastrepha ludens, A. obliqua and A. serpentina) was tested in three commercial orchards of known fruit fly hosts: mango (Mangifera indica L.), mammy (Calocarpum mammosum L.) and Mexican plum (Spondias purpurea L.) in Chiapas, Mexico. Among the synthetic attractants tested, we found that Ammonium Acetate (AA) plus Putrescine (PT) in a liquid trap was often the best combination for attracting flies. Interestingly, the reduction of release rate of AA increases the capture of fruit flies. We also found that Ammonium Bicarbonate (AB) plus PT in a wet trap was effective in a Mexican plum orchard in comparison with the other combinations of synthetic attractants. However, the synthetic attractants in dry traps were not effective and always presented the lowest Captures. (author)

  19. Anastrepha species (Diptera: Tephritidae, their host plants and parasitoids (Hymenoptera in the state of Roraima, Brazil: state of the art

    Directory of Open Access Journals (Sweden)

    Alberto Luiz Marsaro Júnior

    2017-02-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2017v30n1p13 The aim of this review was to update the available information on Anastrepha species in the state of Roraima, Brazil, with emphasis on distribution, host plants and parasitoids. In total, 25 species of Anastrepha and 27 host plant species have been recorded to date in Roraima. Anastrepha striata and A. obliqua are widely distributed in the state. Anastrepha obliqua is the most polyphagous species, where it is associated with 13 hosts. Six species of parasitoids of Anastrepha have been reported in Roraima. Of these, Doryctobracon areolatus is the most abundant and has been associated with the largest number of Anastrepha species.

  20. Wat iedere journalist moet weten van marktonderzoek : Doorvragen bij wie

    NARCIS (Netherlands)

    de Leeuw, Edith|info:eu-repo/dai/nl/073351385

    Een gouden regel in de journalis-tiek vormen de vijf W’s (en een H). Een goede onderzoeksjournalist zal altijd vragen: wie, waarom, wat, waar, wanneer en hoe. Het zijn prima basisvragen, maar wanneer een journalist een item voorbereidt en daarbij gebruik maakt van marktonderzoek, moet er nog even

  1. Effect of the gene transformer of Anastrepha on the somatic sexual development of Drosophila.

    Science.gov (United States)

    Ruiz, María-Fernanda; Sánchez, Lucas

    2010-01-01

    The gene transformer (tra) is the key regulatory memory device for sex determination in tephritid insects. The present manuscript addressed the question about the functional conservation of the tephritid Anastrepha Transformer protein to direct somatic sexual development in Drosophila (Drosophilidae). The transformer cDNA of Anastrepha encoding the putative full-length Tra protein was cloned in pUAST and introduced into Drosophila melanogaster. To express this protein, the GAL4-UAS system was used. The Anastrepha Tra protein induced the female-specific splicing of both dsx and fru pre-mRNAs in Drosophila XY male flies, so that these became transformed into females, though this transformation was incomplete (the sexually dimorphic foreleg basitarsus and the external terminalia were monitored). It was found that the degree of female transformation directly depended on the dose of Anastrepha tra and Drosophila transformer-2 (tra-2) genes, and that the Anastrepha Tra-Drosophila Tra2 complex is not as efficient as the Drosophila Tra-Tra2 complex at inducing the female-specific splicing of Drosophila dsx pre-mRNA. This can explain why the Anastrepha Tra protein cannot fully substitute for the endogenous Drosophila Tra protein.

  2. Digitale Transformation, aber wie? - Von der Spielwiese zur Umsetzungsplanung

    Science.gov (United States)

    Kaiser, Thomas

    Es besteht wohl kaum Anlass zur Annahme, dass die seit Jahrzehnten etablierten Markt- und Technologiestrukturen der Energiewirtschaft sich nicht in einem radikalen Ablöseprozess mit Gewinnern und Verlierern befinden. Aber Vorsicht - vordergründig bereits verloren erscheinende Geschäftsmodelle erfahren im Zuge der Digitalisierung einerseits noch intensiveren Wettbewerbsdruck, können aber andererseits von diesem "technologischen Jungbrunnen" profitieren, um verlorenes Terrain zurückzugewinnen. Im folgenden Kapitel wird ein Managementzyklus aufgezeigt, der in Anlehnung an die bereits erfolgreiche Implementierung digitaler R/Evolutionen anderer Branchen aufzeigt, wie die Geschäftsleitung systematisch kostenbewusst und zielorientiert die Digitalisierung umsetzen kann.

  3. Biology of Anastrepha grandis (Diptera: Tephritidae) in Different Cucurbits.

    Science.gov (United States)

    Bolzan, Anderson; Nava, Dori E; Garcia, Flávio R M; Valgas, Ricardo A; Smaniotto, Giovani

    2015-06-01

    Anastrepha grandis (Macquart) (Diptera: Tephritidae) is one of the main pests of cucurbits in Brazil. Losses occur due to the damage caused to the fruits and the embargo on exports, as A. grandis is considered a quarantine pest in countries that import Brazilian cucurbits. This study aimed to evaluate the development of A. grandis in hosts of the Cucurbitaceae family. The hosts used were stem squash (Cucurbita pepo L.), squash (Cucurbita moschata Duchesne), chayote [Sechium edule (Jacq.) Swartz], mini watermelon [Citrullus lanatus (Thunb.) Matsum & Nakai], Spanish melon (Cucumis melo L.), hybrid squash "Tetsukabuto" (C. moschata×Cucurbita maxima Duchesne), and salad cucumber (Cucumis sativus L.). We evaluated the viability and duration of egg-to-pupa period, pupal weight, sex ratio, and average number of pupae per fruit under controlled conditions of temperature, relative humidity, and photophase. The preoviposition and oviposition periods, fecundity, fertility, and longevity of females were determined for adults. Hosts of the genus Cucurbita provided a better development of A. grandis in comparison with other hosts, and presented a greater number of insects on fruit as well as higher infestation rate. Fecundity and longevity were also higher for females that developed in hosts of the genus Cucurbita, although values of these biological parameters varied between stem squash, squash, hybrid squash "Tetsukabuto." © The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  4. First record of Anastrepha serpentina (Wiedemann) (Diptera: Tephritidae) in citrus in Brazil.

    Science.gov (United States)

    Lemos, W P; da Silva, R A; Araújo, S C A; Oliveira, E L A; da Silva, W R

    2011-01-01

    Anastrepha serpentina (Wiedemann) is recorded for the first time in citrus (Rutaceae) in Brazil. Specimens were obtained from sweet orange (Citrus sinensis) sampled in the municipalities of Belém and Capitão Poço, and from mandarin orange (Citrus reticulata) from Tomé-Açu, state of Pará, Brazil.

  5. First record of Anastrepha serpentina (Wiedemann) (Diptera: Tephritidae) in citrus in Brazil

    OpenAIRE

    Lemos, WP; Silva, RA da; Araújo, SCA; Oliveira, ELA; Silva, WR da

    2011-01-01

    Anastrepha serpentina (Wiedemann) is recorded for the first time in citrus (Rutaceae) in Brazil. Specimens were obtained from sweet orange (Citrus sinensis) sampled in the municipalities of Belém and Capitão Poço, and from mandarin orange (Citrus reticulata) from Tomé-Açu, state of Pará, Brazil.

  6. Identification of Chemicals Emitted by Calling Males of the Sapote Fruit Fly, Anastrepha serpentina (Diptera: Tephritidae)

    Science.gov (United States)

    Emissions from sexually active Anastrepha serpentine males were collected by solid-phase microextraction. Calling behavior of wild-type males showed no clear peak during the day, except that it was evident less frequently immediately after daybreak and just before dark. Calling by laboratory males...

  7. New species and host plants of Anastrepha (Diptera: Tephritidae) primarily from Peru and Bolivia

    Science.gov (United States)

    Twenty-eight new species of Anastrepha are described and illustrated: A. acca (Bolivia, Peru), A. adami (Peru), A. amplidentata (Bolivia, Peru), A. annonae (Peru), A. breviapex (Peru), A. caballeroi (Peru), A. camba (Bolivia, Peru), A. cicra (Bolivia, Peru), A. disjuncta (Peru), A. durantae (Peru), ...

  8. Paul Celan in Translation: "Du sei wie du"

    Directory of Open Access Journals (Sweden)

    John Felstiner

    1983-09-01

    Full Text Available Translating the lyric poetry of Paul Celan, especially his later poems, carries not only the endemic challenge and difficulty of any verse translation, but the added incentive of doing justice to a writer whose whole recourse after the Holocaust—whose sanctuary, if he was to have any at all—he sought in language itself, specifically in the Muttersprache , the mother tongue that was as well the tongue of those who murdered his mother and father. This essay exposes a process of translating "Du sei wie du" (1970, which perhaps more than any other poem by Celan, at once solicits and defies translation, moving as it does from modern to medieval German, and closing with Hebrew words from Isaiah— a messianic imperative that shows Celan verging as ever on his Jewish identity.

  9. The gene transformer-2 of Anastrepha fruit flies (Diptera, Tephritidae) and its evolution in insects.

    Science.gov (United States)

    Sarno, Francesca; Ruiz, María F; Eirín-López, José M; Perondini, André L P; Selivon, Denise; Sánchez, Lucas

    2010-05-13

    In the tephritids Ceratitis, Bactrocera and Anastrepha, the gene transformer provides the memory device for sex determination via its auto-regulation; only in females is functional Tra protein produced. To date, the isolation and characterisation of the gene transformer-2 in the tephritids has only been undertaken in Ceratitis, and it has been shown that its function is required for the female-specific splicing of doublesex and transformer pre-mRNA. It therefore participates in transformer auto-regulatory function. In this work, the characterisation of this gene in eleven tephritid species belonging to the less extensively analysed genus Anastrepha was undertaken in order to throw light on the evolution of transformer-2. The gene transformer-2 produces a protein of 249 amino acids in both sexes, which shows the features of the SR protein family. No significant partially spliced mRNA isoform specific to the male germ line was detected, unlike in Drosophila. It is transcribed in both sexes during development and in adult life, in both the soma and germ line. The injection of Anastrepha transformer-2 dsRNA into Anastrepha embryos caused a change in the splicing pattern of the endogenous transformer and doublesex pre-mRNA of XX females from the female to the male mode. Consequently, these XX females were transformed into pseudomales. The comparison of the eleven Anastrepha Transformer-2 proteins among themselves, and with the Transformer-2 proteins of other insects, suggests the existence of negative selection acting at the protein level to maintain Transformer-2 structural features. These results indicate that transformer-2 is required for sex determination in Anastrepha through its participation in the female-specific splicing of transformer and doublesex pre-mRNAs. It is therefore needed for the auto-regulation of the gene transformer. Thus, the transformer/transfomer-2 > doublesex elements at the bottom of the cascade, and their relationships, probably represent

  10. Karyotype relationships among Anastrepha bistrigata, A. striata and A. serpentina (Diptera, Tephritidae

    Directory of Open Access Journals (Sweden)

    Denise Selivon

    2007-01-01

    Full Text Available The species of Anastrepha are arranged into 17 intrageneric groups. Recently, it was proposed that two species of the striata group, Anastrepha striata and A. bistrigata, might be realocated to serpentina group. Anastrepha bistrigata and A. serpentina have an X1X2Y/X1X1 X2X2 sex chromosome system while A. striata has a XY/XX system. It was previously proposed that the karyotype of A. bistrigata could be derived from that of A. striata by an Y:A fusion, and that the karyotype of A. serpentina would be derived from another, hypothetical karyotype. In the present report sequential staining with DAPI and chromomycin A3 (CMA3, followed by C-banding, revealed that the C-banded heterochromatic blocks of the sex chromosomes of A. bistrigata have different affinities to fluorochromes in comparison to the chromosomes of A. striata, from which they have hypothetically derived. The chromosomes of A. serpentina show substantial differences in their cytochemical properties compared to their A. bistrigata and A. striata counterparts. The FISH technique showed that the ribosomal gene sequences are located in DAPI- or DAPI/CMA3-positive heterochromatic blocks of the sex chromosomes, one site on the Y chromosome and one site on the X chromosome (X1 in A. bistrigata and A. serpentina. The data suggest that the karyotype of A. striata and A. bistrigata could be derived from a common ancestral karyotype, while the A. serpentina karyotype probably has a distinct origin.

  11. David de Wied: Eminent scientist and academic leader: A personal note.

    Science.gov (United States)

    Gispen, Willem Hendrik

    2010-01-10

    David de Wied was a natural leader with many a talent. He was the director of the Rudolf Magnus Institute at Utrecht University and president of the Royal Netherlands Academy of Arts and Sciences. He coached over 75 Ph.D. students and hosted some 200 foreign scientists who joined him in his multidisciplinary neuropeptide research. Many of them became lifelong friends, frequenting the home of Liedje and David de Wied. Born in Deventer (The Netherlands) on January 12th, 1925, David de Wied's early boyhood first in Deventer and later in Leeuwarden appears to have been no different from that of any other provincial Dutch boys in pre-war Holland. After the war David enrolled at Groningen University to study medicine. Subsequently he specialized in experimental pharmacology. To understand the determination of David de Wied is to understand the drive of a Jewish young man, who during the war, had been forced to go underground and unable to develop in a free and independent manner. Therefore, later in life, time became very precious to him and everything that came across his path had to be taken seriously. In this short sketch of David de Wied I will try to highlight his outstanding scientific accomplishments as well as his personality as both have inspired a generation of young scientists. It is a great honour and a pleasure to be part of this meeting in memory of David de Wied.

  12. Best Host Age of Anastrepha obliqua (Diptera: Tephritidae) for Multiplication of Four Native Parasitoids from the Americas

    Science.gov (United States)

    Poncio, S; Montoya, P; Cancino, J; Nava, D E

    2018-01-01

    Abstract The success of the mass rearing of parasitoids is directly related to host quality, and it requires selecting the best biological host age to ensure the optimal performance of the parasitoids released into the field. The larval development of the parasitoids Utetes anastrephae (Viereck) (Hymenoptera: Braconidae) and Odontosema anastrephae Borgmeier (Hymenoptera: Eucoilidae) and the pupal development of the parasitoids Coptera haywardi (Ogloblin) (Hymenoptera: Diapriidae) and Dirhinus sp. (Hymenoptera: Chalcididae) on the native host Anastrepha obliqua (Macquart) (Diptera: Tephritidae) in different larvae and pupae ages were investigated under laboratory conditions. Not all parasitoid species developed with the same efficiency in immature individuals of A. obliqua; U. anastrephae and C. haywardi showed the higher parasitism rates. The emergence and parasitism of U. anastrephae were equal using larvae from 5 to 8 d, while C. haywardi reared in 1- to 8-d-old pupae showed higher averages of parasitism. These results suggest that native parasitoids can be used to strengthen the implementation of biological control projects against A. obliqua, a pest of economic importance in South America.

  13. Effect of Resin Ducts and Sap Content on Infestation and Development of Immature Stages of Anastrepha obliqua and Anastrepha ludens (Diptera: Tephritidae) in Four Mango (Sapindales: Anacardiaceae) Cultivars.

    Science.gov (United States)

    Guillén, Larissa; Adaime, Ricardo; Birke, Andrea; Velázquez, Olinda; Angeles, Guillermo; Ortega, Fernando; Ruíz, Eliel; Aluja, Martín

    2017-04-01

    We determined the influence of resin ducts, sap content, and fruit physicochemical features of four mango cultivars (Criollo, Manila, Ataulfo, and Tommy Atkins) on their susceptibility to the attack of the two most pestiferous fruit fly species infesting mangoes in Mexico: Anastrepha ludens (Loew) and Anastrepha obliqua (Macquart). We performed three studies: 1) analysis of resin ducts in mango fruit exocarp to determine the density and area occupied by resin ducts in each mango cultivar, 2) assessment of mango physicochemical features including fruit sap content, and 3) a forced infestation trial under field conditions using enclosed fruit-bearing branches to expose mangoes to gravid A. ludens or A. obliqua females. Infestation rates, development time from egg to prepupae and pupae, pupal weight, and percent of adult emergence, were assessed. 'Ataulfo' and 'Tommy Atkins' cultivars exhibited the highest resin duct density and sap content, the lowest infestation rate, and had a negative effect on immature development and pupal weight. In sharp contrast, 'Manila' and 'Criollo' cultivars, with the lowest resin duct density and sap content, were highly susceptible to A. ludens and A. obliqua attack. We conclude that sap content and the number, size, and distribution of resin ducts as well as firmness in mango fruit exocarp are all involved in the resistance of mango to A. ludens and A. obliqua attack. © The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  14. Determinação de danos do gorgulho, Conotrachelus psidii Marshall e captura de mosca-das-frutas, Anastrepha fraterculus Wiedemann, com óleo de andiroba, Carapa guianensis em goiabeira serrana Acca sellowiana. Lages-SC 2011

    OpenAIRE

    Rosa, Joatan Machado da

    2011-01-01

    A goiabeira-serrana (Acca sellowiana (Berg) Burret) pertencente a família Myrtaceae, é uma espécie nativa com ampla dispersão nos planaltos meridionais do sul do Brasil. Além de espécie nativa e produzir frutos de odor e sabor diferenciado, razão pela qual seu cultivo comercial é incentivado pelo Departamento de Conservação da Biodiversidade do Ministério do Meio Ambiente. A goiabeira serrana tem sido cultivada sob os sistemas orgânico, convencional, ou ainda, os frutos coletad...

  15. Especies, distribución y hospederos del género Anastrepha Schiner en el departamento del Tolima, Colombia

    OpenAIRE

    Castañeda, María del Rosario; Osorio F, Armando; Canal, Nelson A; Galeano, Pedro Édgar

    2010-01-01

    Las moscas del género Anastrepha constituyen una de las principales plagas de la fruticultura colombiana. El conocimiento de la diversidad de especies presentes en un área es el primer paso en el diseño de estudios tendientes a establecer tecnologías apropiadas de manejo. Además de un listado de las especies de Anastrepha identificadas en el Laboratorio de Entomología de la Universidad del Tolima desde 1988 hasta la fecha a través de diversos estudios realizados en este departamento, el prese...

  16. Especies, distribución y hospedantes del género anastrepha schiner en el departamento del tolima, colombia

    OpenAIRE

    Castañeda, Marìa del Rosario; Osorio, Armando; Canal, Nelson A.; Galeano, Pedro Edgar

    2010-01-01

    Las moscas del género Anastrepha constituyen una de las principales
    plagas de la fruticultura colombiana. El conocimiento
    de la diversidad de especies presentes en un área es el primer
    paso en el diseño de estudios tendientes a establecer tecnologías
    apropiadas de manejo. Además de un listado de las especies de
    Anastrepha identificadas en el Laboratorio de Entomología de
    la Universidad
    del Tolima desde 1988 hasta la ...

  17. Eficácia de atrativos alimentares na captura de moscas-das-frutas em pomar de citros Attractiveness of food baits to the fruit flies in citrus orchard

    Directory of Open Access Journals (Sweden)

    Adalton Raga

    2006-01-01

    Full Text Available As moscas-das-frutas (Diptera: Tephritoidea são importantes pragas de frutas cítricas no Estado de São Paulo, principalmente Anastrepha fraterculus (Wied. e Ceratitis capitata (Wied.. O objetivo deste estudo foi medir a eficiência dos atrativos alimentares para monitoramento de moscas-das-frutas, em pomar de citros. O delineamento experimental adotado foi de blocos ao acaso com cinco tratamentos e cinco repetições. O ensaio foi instalado em 30/9/2003 e desenvolvidopor nove semanas. Os atrativos testados foram: proteínas hidrolisadas comerciais Bio Anastrepha, Isca Mosca e Aumax®, todas diluídas em água a 5%; melaço a 7% isoladamente e melaço a 7% em mistura com suco de laranja a 10%. Foram utilizados semanalmente, 400mL da solução atrativa por frasco plástico McPhail instalado na copa de laranjeiras da variedade 'Pêra Rio'. As soluções eram renovadas semanalmente, ocasião em que os adultos eram coletados e çevados ao laboratório para contagem, sexagem e identificação. Foram capturados 1.821 adultos de Tephritoidea, sendo 892 de Anastrepha spp., 731 de C. capitata e 198 de Neosilba spp. Para essas espécies, as proteínas Bio Anastrepha e Isca Mosca foram altamente eficientes e semelhantes entre si, capturando 44,5% e 41,3% dos adultos de Tephritidae respectivamente. Não houve diferença entre as espécies de Tephritidae analisadas por sexo capturadas em Bio Anastrepha, Aumax® e melaço. Aumax®, melaço isoladamente e melaço + suco de laranja atraíram apenas 4,6%, 1,3% e 1,2% do total de adultos de Tephritidae, respectivamente. Melaço isoladamente e melaço com suco de laranja foram mais eficazes na atratividade de Zaprionus indianus (Gupta (Diptera: Drosophilidae.Fruit flies (Diptera: Tephritoidea are key pests in citrus production in the State of São Paulo, Brazil, mainly Anastrepha fraterculus (Wied. and Ceratitis capitata (Wied.. The objective of this study was to evaluate food baits to monitor fruit fly

  18. Parasitóides (Hymenoptera: Braconidae de Anastrepha Schiner (Diptera: Tephritidae no estado do Acre Parasitoids (Hymenoptera: Braconidae of Anastrepha Schiner (Diptera: Tephritidae in the state of Acre, Brazil

    Directory of Open Access Journals (Sweden)

    Marcílio José Thomazini

    2009-03-01

    Full Text Available Este trabalho relata a primeira ocorrência de parasitóides em moscas-das-frutas do gênero Anastrepha Schiner no estado do Acre. No município de Bujari foram encontrados os braconídeos Opius bellus Gahan (72,5%, Doryctobracon areolatus (Szépligeti (26,8% e Utetes anastrephae (Viereck (0,7% associados a A. obliqua (Macquart em frutos de taperebá (Spondias mombin L., com parasitismo de 29,5%. No município de Rio Branco, em frutos de goiaba (Psidium guajava L., ocorreu somente D. areolatus em A. obliqua com parasitismo de 2,7%.This paper records the first parasitoids occurrence on Anastrepha Schiner fruit flies in the state of Acre, Brazil. In the Bujari County there occurred the braconids Opius bellus Gahan (72.5%, Doryctobracon areolatus (Szépligeti (26.8% e Utetes anastrephae (Viereck (0.7% associated with A. obliqua (Macquart in tapereba fruits (Spondias mombin L., with parasitism of 29.5%. In guajava fruits (Psidium guajava L. at Rio Branco County, only D. areolatus on A. obliqua occurred, with parasitism of 2.7%.

  19. Susceptibility of 15 mango (Sapindales: Anacardiaceae) cultivars to the attack by Anastrepha ludens and Anastrepha obliqua (Diptera:Tephritidae) and the role of underdeveloped fruit as pest reservoirs: management implications

    Science.gov (United States)

    We evaluated the susceptibility of 15 mango cultivars to the attack of Anastrepha ludens and A. obliqua, the main Tephritid pests of this crop in Mexico. In a field experiment, bagged, fruit-bearing branches were exposed to gravid females of both fly species. Infestation rates, developmental time,...

  20. First Occurrence of Ceratitis capitata (Wied. in the State of Roraima, Brazil = Primeira ocorrência de Ceratitis capitata (Wied. no Estado de Roraima, Brasil

    Directory of Open Access Journals (Sweden)

    Luciana Baú Trassato

    2017-03-01

    Full Text Available Due to its cosmopolitan and invasive characteristics, the Mediterranean fruit fly, Ceratitis capitata (Wied., is considered to be the most harmful tephritide to global fruit farming, causing greater losses in production than any other species of the same family. In Brazil, it was first detected in 1901 in the state of São Paulo, and was present in 22 of the 27 federated states by 2014. Because of its economic importance and the continual entry of hosts into the state, the hypothesis of this work was that the Mediterranean fruit fly [Ceratitis capitata (Wied.] is already present in the State of Roraima. Weekly collections of potential host fruits were carried out in October 2014 in urban areas of the city of Boa Vista, Roraima. The collected fruit was taken to the Entomology Laboratory of the Federal University of Roraima, where they were weighed, counted and packed under controlled conditions of temperature and humidity in order to obtain pupae. After emergence, the flies were fed on water with 25% honey for two days, fixed in 70% alcohol and sent for identification to the Department of Entomology Research of the Amazon National Research Institute (INPA in Manaus. In this way, Specimens of Ceratitis capitata (Wied. (Diptera: Thephritidae were detected in fruit of the guava (Psidium guajava L., validating the hypothesis that the pest is already present in Roraima. The first record of the occurrence of Ceratitis capitata (Wied. in the state of Roraima is therefore reported here. = A mosca-do-mediterrâneo, Ceratitis capitata (Wied., por apresentar características cosmopolita e invasora, é considerada o tefritideo mais nocivo à fruticultura mundial, causando perdas produtivas superiores a qualquer outra espécie da sua família. No Brasil, foi primeiramente detectada em 1901 no estado de São Paulo, e estava presente em 22 das 27 unidades federativas até o ano de 2014. Em razão da sua importância econômica e da constante entrada de

  1. Wozu und wie kooperative Arbeitsformen im studienbegleitenden Deutschunterricht?

    Directory of Open Access Journals (Sweden)

    Karmelka Barić

    2016-04-01

    Full Text Available Ausgehend von einer Reflexion über die im Beruf und im Leben notwendigen Kompetenzen in der Kommunikation sowie von der Überzeugung, dass es notwendig ist, diese Kompetenzen schon im Studium durch geeignete Arbeitsverfahren und Themen zu entwickeln, werden Kooperation und Autonomie fördernde Arbeitsformen für den studienbegleitenden Deutsch- und Fremdsprachenunterricht (SDU/SFU vorgestellt. Diese Arbeitsformen sind auf andere Sprachen übertragbar und aus dem Lehrwerk Mit Deutsch studieren arbeiten leben A2/B1 (Lévy-Hillerich, Serena, Barić & Cickovska 2010 und der dazu gehörenden Lernplattform entnommen. Das Lehrwerk selbst ist eine Umsetzung der SDU-Rahmencurricula, die im Laufe von über zwanzig Jahren in zehn Ländern im Rahmen eines 1994 am Goethe-Institut Warschau begonnenen Hochschulprojekts und der daraus entstandenen Forschungstätigkeit entstanden sind. Grundlage des Projekts ist ein ganzheitlicher soziopädagogischer Ansatz, der LernerInnen als Menschen betrachtet, die im Präsenz- oder im virtuellen Unterricht in der Sprache und durch die Sprache fach- und sprachübergreifende Kooperationsfähigkeiten entwickeln, die sich später im Leben in der Gesellschaft auswirken. Nach der Vorstellung des Projekts und seiner wissenschaftlichen Hintergründe im ersten Teil des Beitrags werden im zweiten Teil die sich aus dem Ansatz ergebenden Arbeitsformen untersucht: Dabei werden die sich dazu eignenden Themen, die Lernhilfen für StudentInnen, die den LehrerInnen zufallenden Rollen sowie die Ansprüche an Lehrbücher/Unterrichtsmaterialien und Online-/Blended-Learning-Lernszenarien besprochen. Der abschließende Überblick im dritten Teil über die Schwierigkeiten, die beim kooperativen Lernen im SDU/SFU auftreten können, ist gleichzeitig eine offenbleibende Frage danach, wie LehrerInnen aus- und fortgebildet werden sollten, um sich den Anforderungen einer sich dauernd verändernden Lernlandschaft stellen zu können.   The paper

  2. Faunistic analysis of the species of Anastrepha Schiner (Diptera: Tephritidae in three municipalities of the state of Roraima, Brazil

    Directory of Open Access Journals (Sweden)

    AL. Marsaro Júnior

    Full Text Available The purpose of this work was to describe the population patterns of Anastrepha in three municipalities of the state of Roraima, Brazil, via faunistic analysis. Weekly collections were performed from January through December 2008, using McPhail traps containing 5% hydrolysed protein, in domestic orchards in the municipalities of Boa Vista, Bonfim and Pacaraima. We captured 301 females of Anastrepha in Boa Vista, 212 in Bonfim, and 167 in Pacaraima. Boa Vista presented the highest species richness (S = 10 and Pacaraima the lowest (S = 4. Anastrepha striata was the predominant species in Boa Vista (47.18% and Pacaraima (65.87%, whereas A. obliqua predominated in Bonfim (46.23%. Boa Vista presented the highest Shannon-Wiener diversity index (H' = 1.19 and Margalef index (α = 1.58, and Bonfim presented the highest Pielou's evenness index (J' = 0.69. In Pacaraima the cumulative curves reached stability, confirming that the observed and expected species richness were the same. In the other two municipalities, the curves showed a moderate growth, suggesting that the sampling effort was not sufficient to produce an accurate depiction of species richness. In this study, Anastrepha zernyi is reported for the first time in Roraima.

  3. Electroantennogram response and attraction of Anastrepha suspensa to volatiles of various sugar sources and aged sugar solutions

    Science.gov (United States)

    With the aim of finding new, sugar-based volatile attractants for economically important tephritid fruit fly species, we used electroantennography (EAG) to quantify olfactory responses of female Caribbean fruit fly, Anastrepha suspensa (Loew), to volatiles of six different sugars (refined white and ...

  4. Sterilization of fruit flies (Diptera: Tephritidae) with X-rays for sterile insect technique programs; Esterilizacao de moscas-das-frutas (Diptera: Tephritidae) com raios-X para programas de tecnica do inseto esteril

    Energy Technology Data Exchange (ETDEWEB)

    Mastrangelo, Thiago de Araujo

    2009-07-01

    Recent fear of acts of terrorism provoked an increase of delays and denials in the shipment of radioisotopes. This truly represented a menace to sterile insect production projects around the world. In order to validate the use of a new kind of low-energy Xray irradiator, a series of radiobiological studies on Ceratitis capitata (tsl-VIENNA 8 strain) (Wied., 1824) (Diptera: Tephritidae) and an Argentinean strain of Anastrepha fraterculus (Wied., 1830) (Diptera: Tephritidae) were carried out, also comparing biological effectiveness between X-rays and traditional {gamma} radiation from {sup 60}Co. Pupae 48- 24 h before adult emergence of C. capitata males and both sexes of A. fraterculus were irradiated with doses ranging from 15 to 120 Gy and 10 to 70 Gy respectively. Doses that induce 50, 90 and 99% of sterility were estimated and the hypothesis of Parallelism for the Probit equations was tested. Doses of 82.7 Gy of X-rays and 128.2 Gy of {gamma} rays (thus, a RBE{approx}1.5) induced 99% sterility on medfly males. The fertility of A. fraterculus fertile females crossed with 41 Gy of X-rays and 62.7 Gy of {gamma} rays decreased in 99% comparing with the control group (RBE{approx}1.5). 99% sterility of A. fraterculus irradiated females was achieved with 60-80 Gy (RBE{approx}0.7). The standard quality control parameters of fecundity, adult emergence, fliers and survival were not significantly affected by the two types of radiation (RBE{approx}1) either for medfly or A. fraterculus (p>0.01), being averages in conformity with the values required by FAO/IAEA/USDA. Only fecundity of irradiated A. fraterculus females was severely reduced with increasing doses and no egg was laid at 70 Gy of both radiations. There were no significant differences between X-rays and {gamma} rays regarding mating indices (RSI for medfly, RII, ISI, MRPI and FRPI for A. fraterculus) (p>0.05), what indicated more random matings for fertile and sterile insects. The results demonstrated that no

  5. Sterilization of fruit flies (Diptera: Tephritidae) with X-rays for sterile insect technique programs

    International Nuclear Information System (INIS)

    Mastrangelo, Thiago de Araujo

    2009-01-01

    Recent fear of acts of terrorism provoked an increase of delays and denials in the shipment of radioisotopes. This truly represented a menace to sterile insect production projects around the world. In order to validate the use of a new kind of low-energy Xray irradiator, a series of radiobiological studies on Ceratitis capitata (tsl-VIENNA 8 strain) (Wied., 1824) (Diptera: Tephritidae) and an Argentinean strain of Anastrepha fraterculus (Wied., 1830) (Diptera: Tephritidae) were carried out, also comparing biological effectiveness between X-rays and traditional γ radiation from 60 Co. Pupae 48- 24 h before adult emergence of C. capitata males and both sexes of A. fraterculus were irradiated with doses ranging from 15 to 120 Gy and 10 to 70 Gy respectively. Doses that induce 50, 90 and 99% of sterility were estimated and the hypothesis of Parallelism for the Probit equations was tested. Doses of 82.7 Gy of X-rays and 128.2 Gy of γ rays (thus, a RBE∼1.5) induced 99% sterility on medfly males. The fertility of A. fraterculus fertile females crossed with 41 Gy of X-rays and 62.7 Gy of γ rays decreased in 99% comparing with the control group (RBE∼1.5). 99% sterility of A. fraterculus irradiated females was achieved with 60-80 Gy (RBE∼0.7). The standard quality control parameters of fecundity, adult emergence, fliers and survival were not significantly affected by the two types of radiation (RBE∼1) either for medfly or A. fraterculus (p>0.01), being averages in conformity with the values required by FAO/IAEA/USDA. Only fecundity of irradiated A. fraterculus females was severely reduced with increasing doses and no egg was laid at 70 Gy of both radiations. There were no significant differences between X-rays and γ rays regarding mating indices (RSI for medfly, RII, ISI, MRPI and FRPI for A. fraterculus) (p>0.05), what indicated more random matings for fertile and sterile insects. The results demonstrated that no significant difference in biological

  6. A checklist of the species of Anastrepha with the families of their host plants and hymenopteran parasitoids in Brazil

    International Nuclear Information System (INIS)

    Zucchi, Roberto Antonio

    2000-01-01

    Many surveys on fruit flies have already been carried out by several researchers in Brazil while others are still going on. Most of these surveys were conducted in areas where no studies had been previously done. With these surveys, new species and new records of species were found in Brazil. Also, in this decade, several surveys on fruit fly braconid parasitoids were conducted. These data have been summarised recently, because of the great interest in the biological control of fruit flies in Brazil. Research on eucoilid fruit fly parasitoids have been largely neglected. However, taxonomic studies are being conducted on eucoilids associated with frugivorous flies (Tephritidae and Lonchaeidae) in Brazil. All the data on fruit flies, host plants and hymenopteran parasitoids are unfortunately scattered in the literature and frequently are only published as dissertations or congress abstracts which are not widely available. Even when submitted for publication, papers take a long time to come out in Brazil. Consequently, it is very difficult to get a list of the Anastrepha species in Brazil, or to determine which host plant species are associated with them. These data are of particular interest in the case of economically important species, especially those considered as quarantine pests. Therefore, such a list is very useful for regulatory entomologists and pest management programmes by listing the Anastrepha species in Brazil and their associated host plants and hymenopteran parasitoids. The objective of this paper is to gather some available records of the Anastrepha species, their host plants and hymenopteran parasitoids (Braconidae and Eucoilidae) published in Brazil. Due to the space limitation of this paper, only families of the host plants of the Anastrepha species are presented. In fact, this work is part of a research which deals with the preparation of a database for the Anastrepha species in Brazil

  7. Die boek Job as bron van intertekste vir ‘Wie weet?' (Die waarheid gelieg, 1984

    Directory of Open Access Journals (Sweden)

    E. Botha

    1995-05-01

    Full Text Available The Book of Job as a source of intertexts for T.T. Cloete’s short story ‘Wie weet?’ (Die waarheid gelieg, 1984 T.T. Cloete’s account of a woman's physical and spiritual agony in the short story “Wie weet?” ffrom Die waarheid gelieg, 1984, read within the South African/Afrikaans cultural context, presents several indicators that the Book of Job is its intertext, the most explicit pointer being the role of the sufferer’s sister-in-law. Intertextuality in Cloete’s oeuvre often takes the form of a creative reworking or rereading of texts (cf Scholtz, 1984; Botha, 1984; Roos, 1986. Roos comments on the caricatural treatment of theme in Cloete’s “Veg om te verloor” (Cloete, 1984, highlighted by the rereading imposed on the reader of Van Melle’s well-known story "Die joiner”, creating distrust in the implicit author of the Cloete text. The argument in this essay is that the explicit engagement of the intertext, as in "Wie weet?”, also serves as an affirmative complement to the negative incompleteness of the rereading. Thus the desperate questioning of "Wie weet?” becomes an integral part of a reading of Cloete’s oeuvre as a hymn to God’s omnipotence and mercy, epitomized in the poem "Van Horn en my” (Jukstaposisie, 1982.

  8. De status van Uber – Wie betaalt er aan het eind van de rit?

    NARCIS (Netherlands)

    de Vries, Anne

    2016-01-01

    Taxi-app Uber biedt consumenten een snelle en makkelijke manier om taxi’s te bestellen. Er kleven voor de consument echter ook juridische risico’s aan het gebruik van deze app. Dit artikel bespreekt de vraag wie de consument kan aanspreken als de taxidienst niet naar behoren wordt uitgevoerd: Uber

  9. Influence of quantities of brewer yeast on the performance of Anastrepha obliqua wild females (Diptera, Tephritidae

    Directory of Open Access Journals (Sweden)

    Cresoni-Pereira Carla

    2001-01-01

    Full Text Available Using artificial solid diets, experiments were performed with Anastrepha obliqua (Macquart, 1835 wild females in order to verify the influence of different quantities of brewer yeast on the performance and compensation behavior to unbalanced diets ingestion. The observed parameters were egg production, ingestion, diet efficiency and survival in the reproductive phase. Results indicated that there was no compensatory ingestion to different quantities of yeast and that the diet with 12.5g of yeast provided the best performance. The absence of compensatory ingestion is discussed based on the yeast phagostimulation and on the costs involved in solid diets ingestion. The relation between the analyzed parameters and the protein quantities in the diet were discussed.

  10. Influence of quantities of brewer yeast on the performance of Anastrepha obliqua wild females (Diptera, Tephritidae)

    International Nuclear Information System (INIS)

    Cresoni-Pereira, Carla; Zucoloto, Fernando Sergio

    2001-01-01

    Using artificial solid diets, experiments were performed with Anastrepha obliqua (Macquart, 1835) wild females in order to verify the influence of different quantities of brewer yeast on the performance and compensation behavior to unbalanced diets ingestion. The observed parameters were egg production, ingestion, diet efficiency and survival in the reproductive phase. Results indicated that there was no compensatory ingestion to different quantities of yeast and that the diet with 12.5g of yeast provided the best performance. The absence of compensatory ingestion is discussed based on the yeast phagostimulation and on the costs involved in solid diets ingestion. The relation between the analyzed parameters and the protein quantities in the diet were discussed. (author)

  11. Influence of quantities of brewer yeast on the performance of Anastrepha obliqua wild females (Diptera, Tephritidae)

    Energy Technology Data Exchange (ETDEWEB)

    Cresoni-Pereira, Carla; Zucoloto, Fernando Sergio [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Filosofia, Ciencias e Letras. Dept. de Biologia

    2001-11-15

    Using artificial solid diets, experiments were performed with Anastrepha obliqua (Macquart, 1835) wild females in order to verify the influence of different quantities of brewer yeast on the performance and compensation behavior to unbalanced diets ingestion. The observed parameters were egg production, ingestion, diet efficiency and survival in the reproductive phase. Results indicated that there was no compensatory ingestion to different quantities of yeast and that the diet with 12.5g of yeast provided the best performance. The absence of compensatory ingestion is discussed based on the yeast phagostimulation and on the costs involved in solid diets ingestion. The relation between the analyzed parameters and the protein quantities in the diet were discussed. (author)

  12. New species and host plants of Anastrepha (Diptera: Tephritidae) primarily from Peru and Bolivia.

    Science.gov (United States)

    Norrbom, Allen L; Rodriguez, Erick J; Steck, Gary J; Sutton, Bruce A; Nolazco, Norma

    2015-11-16

    Twenty-eight new species of Anastrepha are described and illustrated: A. acca (Bolivia, Peru), A. adami (Peru), A. amplidentata (Bolivia, Peru), A. annonae (Peru), A. breviapex (Peru), A. caballeroi (Peru), A. camba (Bolivia, Peru), A. cicra (Bolivia, Peru), A. disjuncta (Peru), A. durantae (Peru), A. echaratiensis (Peru), A. eminens (Peru), A. ericki (Peru), A. gonzalezi (Bolivia, Peru), A. guevarai (Peru), A. gusi (Peru), A. kimi (Colombia, Peru), A. korytkowskii (Bolivia, Peru), A. latilanceola (Bolivia, Peru), A. melanoptera (Peru), A. mollyae (Bolivia, Peru), A. perezi (Peru), A. psidivora (Peru), A. robynae (Peru), A. rondoniensis (Brazil, Peru), A. tunariensis (Bolivia, Peru), A. villosa (Bolivia), and A. zacharyi (Peru). The following host plant records are reported: A. amplidentata from Spondias mombin L. (Anacardiaceae); A. caballeroi from Quararibea malacocalyx A. Robyns & S. Nilsson (Malvaceae); A. annonae from Annona mucosa Jacq. and Annona sp. (Annonaceae); A. durantae from Duranta peruviana Moldenke (Verbenaceae); and A. psidivora from Psidium guajava L. (Myrtaceae).

  13. Procedures for mass rearing the West Indian fruit fly, Anastrepha obliqua

    International Nuclear Information System (INIS)

    Moreno, M.P.; Gomez Simuta, Y.; Zavala Lopez, J.L.

    1999-01-01

    A series of bioassays resulted in a promising colony of Anastrepha obliqua (Macquart) for artificial production. A new model circular cage has been designed to achieve an increase in density of adults per cages, thus resulting in an increase in egg production. A bioassay for best egg production as well as constant hydration of eggs until collection time was chosen. Cotton fabric gave the best results of the fabrics used in the oviposition panel. A new diet based on corn cob particles and with citrus acid instead of hydrochloric acid was tested and showed promising results in good production, quality and less risk in handling. The optimum humidity range for larva to pupa conversion was found to be 70-80%. (author)

  14. Disinfestation of Averrhoa carambola infested with Anastrepha obliqua (Macquart, 1835) (Diptera - Tephritidae) using gamma radiation

    International Nuclear Information System (INIS)

    Arthur, V.; Wiendl, F.M.

    1994-01-01

    The disinfestation dose of gamma radiation in Averrhoa carambola infested with larvae of Anastrepha obliqua was determined. Fruits were collected in the field, each having about 11 larvae in the last instar. Fruits were irradiated with the following ganna radiation doses: 0 (control), 50, 150, 300, 600 and 900 Gy. Each treatment consisted of 9 fruits (3 replications) giving the amount of 99 larvae for each treatment. After irradiation the fruits were kept in a climatic chamber with the temperature adjusted to 25± 5 0 C and relative humidity of 70± 5 0 C, until larvae left the fruit and became transformed into pupae and adults. The lethal dose (LD 100 ) of gamma radiation for larvae in the fuits was 600 Gy and the dose of 50 Gy inhibited completely the total emergency of adults. (author). 19 refs, 1 figs, 1 tab

  15. Review: Larissa Förster, Postkoloniale Erinnerungslandschaften. Wie Deutsche und Herero in Namibia des Kriegs von 1904 gedenken (2010 Buchbesprechung: Larissa Förster, Postkoloniale Erinnerungslandschaften. Wie Deutsche und Herero in Namibia des Kriegs von 1904 gedenken (2010

    Directory of Open Access Journals (Sweden)

    Reinhart Kößler

    2010-01-01

    Full Text Available Review of the Monograph: Larissa Förster (2010, Postkoloniale Erinnerungslandschaften. Wie Deutsche und Herero in Namibia des Kriegs von 1904 gedenken, Frankfurt am Main & New York: Campus, ISBN 978-3-593-39160-1, 391 pages. Besprechung der Monographie: Larissa Förster (2010, Postkoloniale Erinnerungslandschaften. Wie Deutsche und Herero in Namibia des Kriegs von 1904 gedenken, Frankfurt am Main & New York: Campus, ISBN 978-3-593-39160-1, 391 Seiten.

  16. Benzalkonium Chloride Provides Remarkable Stability to Liquid Protein Lures for Trapping Anastrepha obliqua (Diptera: Tephritidae).

    Science.gov (United States)

    Lasa, R; Williams, T

    2017-12-05

    Hydrolyzed protein lures are widely used to monitor fruit fly pests but are rapidly degraded by microbial activity and must be replaced frequently. To improve the stability of lures, the quaternary ammonium biocide, benzalkonium chloride (BC), was evaluated in mixtures with two hydrolyzed proteins commonly used to monitor Anastrepha spp. The mean number of Anastrepha obliqua adults captured during six consecutive weeks using Captor + borax with the addition of 240 mg BC/liter, not renewed during the test, was similar to Captor + borax that was replaced at weekly intervals and was more effective than Captor + borax without BC. Numbers of A. obliqua flies captured in 30% CeraTrap diluted in water containing 240 mg BC/liter were similar to those caught in traps baited with Captor + borax or 30% CeraTrap without BC in the first 9 d of evaluation but was significantly more effective than both lures after 56 d. After >2 mo of use, 30% CeraTrap containing 240 mg BC/liter remained as effective as newly prepared 30% CeraTrap. The addition of BC to lures reduced surface tension of liquid lures by ~40-50%. However, when BC was increased to 720 mg BC/liter, only a small additional reduction in surface tension was observed and higher concentrations of BC did not increase capture rates. These findings could contribute to reduced costs for trapping networks and the development of long-lasting formulations of liquid protein lures for bait stations and mass-trapping targeted at major tephritid pests. © The Author(s) 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  17. Wer im Treibhaus sitzt wie wir der Klima- und Energiefalle entkommen

    CERN Document Server

    Kleinknecht, Konrad

    2007-01-01

    Deutschland leistet sich eine verlogene Debatte um die Zukunftsfrage schlechthin: Wie entkommen wir der Energie- und Klimafalle? Mit Parolen aus den Siebzigerjahren (»Atom­kraft – nein danke!«) und Vogel-Strauß-Politik verspielen wir unsere Zukunft als Industrienation. Konrad Kleinknecht zeigt, wie alarmierend die Situation ist. Schon bald wird die Klimaänderung dazu führen, dass Millionen Menschen nach Europa kommen, weil ihre Lebensräume unbewohnbar geworden sind, schon bald wird Energie, der Lebenssaft unserer Zivilisation, nicht mehr ausreichend verfügbar oder bezahlbar sein. Als Physiker kann Kleinknecht klar nachweisen, dass der bisherige Energiekurs, das Setzen auf fossile Energien, in den Untergang führt.

  18. Cyborg oder Göttin: Wie Technikforscherinnen ihr Verhältnis zu Technik sehen

    Directory of Open Access Journals (Sweden)

    Ulrike Kissmann

    2001-11-01

    Full Text Available Die Autorinnen haben für die Beiträge eigene auto/biographische Erlebnisse ausgewählt, in denen der mediale Charakter von Technik deutlich wird. Die Geschichten erzählen also von Technik, die soziale Ordnung und Bedeutung vermittelt und auf diese Weise dazu beiträgt, Geschlechtergrenzen und andere Grenzen wie die zwischen „bekannt“ und „fremd“ oder „normal“ und „anormal“ herzustellen. Die Auto/Biographien sind durch Technik einerseits fremdbestimmt, andererseits zeigen die Autorinnen auch, wie Selbstbestimmung über diese Grenzen hinweg möglich ist. Sie benutzen Donna Haraways Cyborg Metapher (1985, um das Selbst in der Verflechtung von Sozialem und Technischem auto/biographisch zu rekonstruieren.

  19. Fruit Flies of the Genus Anastrepha (Diptera: Tephritidae) From Some Localities of Paraguay: New Records, Checklist, and Illustrated Key

    Science.gov (United States)

    Arias, Osmar René; Fariña, Nelson Librado; Lopes, Gleidyane Novaes; Uramoto, Keiko; Zucchi, Roberto Antonio

    2014-01-01

    Abstract This study deals with fruit flies of the genus Anastrepha Schiner (Diptera: Tephritidae) collected in McPhail traps in the municipalities of Concepción, Belén, Horqueta, Loreto (state of Concepción) and Santa Rosa (state of Misiones), Paraguay. In total, 17 species were captured, 9 of which are new records for Paraguay. All morphological characters used for species identification are illustrated. RESUMEN. Se estudió las especies de moscas de las frutas del género Anastrepha Schiner (Diptera: Tephritidae), colectadas en trampas tipo McPhail en las localidades de Concepción, Belén, Horqueta (Departamento de Concepción) y Santa Rosa (Departamento de Misiones). En total fueron capturadas 17 especies, de las cuales nueve especies corresponden a nuevos registros para el Paraguay. Todos los caracteres morfológicos para la identificación de las especies fueron ilustrados. PMID:25525098

  20. Das Bauhaus in Bewegung - wie das Bauhausgebäude in Dessau funktioniert

    OpenAIRE

    Seyler Thomas

    2016-01-01

    Analyse und Deutung des Bauhausentwurfs - wie das Bauhaus funktioniert Ein Architekt analysiert und deutet den Bauhausentwurf Das Bauhaus in Dessau gilt als Inbegriff einer räumlich freien Anordnung. Diese lässt sich jedoch auf den Prozess einer Entfaltung zurückführen. Der Autor erklärt Schritt für Schritt die Systematik des Entwurfs aus seiner beruflichen Erfahrung.

  1. Wie is die goeie Samaritane? Eienskappe van vrywilligers in Suid-Afrika

    OpenAIRE

    Krugell, Waldo

    2010-01-01

    Mense wat vrywillig en sonder betaling hul arbeid aanbied vir die produksie van goedere en dienste waaruit ander voordeel trek, speel 'n belangrike rol in die ekonomie en gemeenskap. As vrywilligers beter verstaan word, kan hul kragte dalk beter gemobiliseer word. Die vraag is dus: Wie is die goeie Samaritane? Hierdie studie ondersoek die eienskappe van vrywilligers in Suid-Afrika met behulp van data uit die Arbeidsmagopname van September 2007. Die resultate toon dat vrywilligers in Suid-Afri...

  2. Snapchat in Deutschland: Wie verwenden Nutzer die App und was publizieren Medienmarken?

    OpenAIRE

    Gerhards, Claudia

    2017-01-01

    Obgleich Snapchat im Mediennutzungsverhalten insbesondere von Teenagern eine zunehmend wichtige Rolle spielt, liegen für Deutschland bislang kaum Erkenntnisse dazu vor, wie Funktionen und Inhalte der App tatsächlich von Usern genutzt werden und welche Inhalte- und Gestaltungserwartungen diese an Snapchat-Auftritte von Marken knüpfen. Zudem fehlt es an Untersuchungen, die Aufschluss darüber geben, in welchem Umfang deutsche Medienmarken mit eigenen Snapchat-Accounts aktiv sind, welche Inhalte ...

  3. Wie Geschwister sich in ihrer musikalischen Entwicklung beeinflussen. Ergebnisse einer Erhebung mit offenem Fragebogen

    OpenAIRE

    Olbertz, Franziska

    2012-01-01

    Die Rolle der Geschwister in der musikalischen Entwicklung sollte anhand empirischer Daten fassbar gemacht und damit eine Forschungslücke der musikalischen Entwicklungspsychologie geschlossen werden. Dazu wurden in der aktuellen Studie zunächst die Formen der musikalischen Beeinflussung unter Geschwistern qualitativ erhoben und kategorisiert. Einfache quantitative Analysen desselben Materials sollten auch Hypothesen über die Bedeutung einiger Variablen ermöglichen, wie z. B. des Altersabstand...

  4. Mass rearing of the Mexican fruit fly, Anastrepha ludens, at the Fruit Flies Biofactory in Metapa de Dominguez, Chiapas, Mexico

    International Nuclear Information System (INIS)

    Zavala Lopez, J.L.; Dominguez G, J.; Gomez S, Y.; Moreno, P.

    1999-01-01

    A description of the present methods for mass rearing Anastrepha ludens, known as the Mexican fruit fly, at the Fruit Flies Biofactory in Metapa de Dominguez, Chiapas, is given. Important contributions and improvements are described for the rearing stages, e.g. egg production and incubation, larvae diets, lab conditions for the development of larvae and pupae, larvae and pupae handling and environmental control. (author)

  5. How satisfied are the major customers of electric utilities?; Wie zufrieden sind die grossen Stromkunden?

    Energy Technology Data Exchange (ETDEWEB)

    Edelmann, H. [VEW Energie AG, Dortmund (Germany). Abt. Marktforschung und Volkswirtschaft

    1998-07-27

    In the liberalised electric power market, satisfying customers is a very important objective of utilities, as customers are free to enter into supply contracts with competitors in the market. Satisfaction of customers enhances customer loyalty, as many electric utilities know by now, but only few utilities have a clear picture of the level of satisfaction of their customers, and of their standing in their customers` opinion in comparison with other marketers. The article explains approaches and methods for a systematic and well-founded survey of customers and assessment of customer satisfaction. (orig./CB) [Deutsch] In einem liberalisierten Elektrizitaetsmarkt kommt der Kundenzufriedenheit eine zentrale Bedeutung zu. Diese ist massgebend dafuer, ob ein Kunde zu einem anderen Anbieter wechselt oder nicht. Hohe Kundenzufriedenheit bedeutet hohe Kundenbindung. Viele Stromversorger haben das bereits erkannt, doch nur bei wenigen existiert ein klares Bild darueber, wie zufrieden ihre Kunden tatsaechlich mit ihnen sind und wie sie im Vergleich zu anderen Stromversorgern stehen. Wie dargestellt wird, laesst sich ein solches Bild nur ueber eine systematische und fundierte Messung der Kundenzufriedenheit gewinnen. (orig./RHM)

  6. Comportamento sexual de Anastrepha sororcula Zucchi (Diptera, Tephritidae em laboratório Sexual behavior of Anastrepha sororcula Zucchi (Diptera, Tephritidae in laboratory

    Directory of Open Access Journals (Sweden)

    Michelli C. N. Facholi-Bendassolli

    2006-09-01

    Full Text Available Anastrepha sororcula Zucchi, 1979, é uma das espécies de mosca-das-frutas mais disseminadas no País, sendo considerada a praga-chave que causa os maiores danos à produção de goiaba (Psidium guajava L., 1758 no Brasil. Em vista da importância desta espécie no complexo de pragas naturais da fruticultura brasileira e, em face à escassez de dados sobre sua biologia e comportamento, este trabalho teve por objetivo obter informações sobre a idade de maturação sexual de A. sororcula em laboratório e descrever seu comportamento reprodutivo. Os machos atingiram a maturidade sexual entre 7 e 18 dias após a emergência, com a maioria dos indivíduos tornando-se sexualmente maduros entre 10 e 13 dias de idade. Exibiram comportamento de sinalização às fêmeas, caracterizado pela distensão da região pleural do abdome, formando uma pequena bolsa de cada lado e, eversão de uma diminuta bolsa membranosa de cutícula retal que circunda a área anal. Durante este processo, os machos realizaram rápidos movimentos de vibração das asas, produzindo sinais audíveis. Uma gotícula foi liberada da região anal durante os movimentos de vibração alar. Após a atração das fêmeas, os machos realizaram uma série de movimentos elaborados de cortejo. As fêmeas alcançaram a maturação sexual entre 14 e 24 dias da emergência, com a maioria tornando-se sexualmente madura aos 19 dias de idade. A exibição diária das atividades sexuais foi confinada quase que exclusivamente ao período das 16:00-17:30h. A. sororcula apresentou um acentuado padrão de protandria.Anastrepha sororcula Zucchi, 1979, is a fruit fly species that can be considered a key pest to the production of guava (Psidium guajava L., 1758, fruit tree which has a wide distribution in Brazil. In view of the importance of this species as a natural pest of Brazilian horticulture and, considering the lack of data about its biology and behavior, the aim of this paper is to obtain

  7. Wie aus dem Nichts etwas entsteht Gespräche über Antimaterie

    CERN Document Server

    AUTHOR|(CDS)2051122

    2018-01-01

    Antimaterie beschäftigt nicht nur Physiker, sondern auch die Phantasie von Science fiction-Autoren, Star Trek-Fans und Laien. Aber was ist eigentlich Antimaterie, und wie stellt man sie her? Kann man sie speichern? Wird sie bald eine Rolle im Alltag spielen? Und warum verdanken wir unsere Existenz – und die unseres Universums – einem winzigen Unterschied zwischen Materie und Antimaterie? Rolf Landua, einer der weltweit führenden Experten auf diesem Gebiet, beantwortet in seinem neuen Buch anschaulich diese und andere Fragen.

  8. Tutoring nauczycielski – tutoring rówieśniczy: aspekty etyczne

    OpenAIRE

    Brzezińska, Anna Izabela; Appelt, Karolina

    2013-01-01

    W artykule autorki wskazują na różnorodne aspekty etyczne stosowania w edukacji metody tutoringu zarówno nauczycielskiego, jak i rówieśniczego. Podstawowym wg nich warunkiem etycznej, a zarazem efektywnej relacji tutorskiej jest – zgodnie z koncepcją samostanowienia Ryana i Deci’ego – zaspokojenie podstawowych, uniwersalnych potrzeb wszystkich partnerów interakcji: potrzeby więzi i bezpieczeństwa, potrzeby autonomii i potrzeby kompetencji. Uświadomienie sobie i uwzględnienie w działaniu tych ...

  9. Hassrede und Katzenbilder : Wie können im globalen Netz nationale Gesetze respektiert werden?

    OpenAIRE

    Kettemann, Matthias C.

    2017-01-01

    Der Zugang zum Internet ist die Voraussetzung, um online aktiv zu sein, zu kommunizieren oder einzukaufen. Zugang allein reicht aber nicht: Erst sogenannte Internet-Intermediäre (oder Internet-Inhalt-Vermittler) wie Google, Facebook oder Amazon ermöglichen es, das Internet zu nutzen, um über Social Media zu kommunizieren, auf Musik, Filme und Texte zuzugreifen oder überhaupt erst via Suchmaschine passende Online-Angebote ausfindig zu machen. Intermediäre verbinden Nutzer mit dem Internet, sie...

  10. Calling behavior of mass-reared and wild Anastrepha serpentina (Diptera: Tephritidae).

    Science.gov (United States)

    Castrejón-Gómez, Victor R; Lascares, Shaila; Malo, Edi A; Toledo, Jorge; Rojas, Julio C

    2007-08-01

    The calling behavior of mass-reared and wild males of Anastrepha serpentina (Wiedemann) (Diptera: Tephritidae) was studied both in the laboratory and in field cage tests. In the laboratory, density (1, 5, and 10 males per container), age, and hour of day significantly affected calling behavior. Mass-reared males called independently of density, whereas wild males only called at densities of 5 and 10 individuals. Males of both strains started calling when they were 5-7 d old. The daily pattern of male calling was similar in both strains, starting at 0730 hours, and reaching a peak at 1330-1630 hours. Field cage tests showed that mass-reared males started calling when they were 5d old; the period of peak calling was when males were 8-9 d old. In contrast, wild males began calling when they were 10 d old, reaching peaks when males were 13, 15, and 18 d old. Wild males tended to form leks to call during each day of the experiment, whereas mass-reared males only formed leks during 2 d, both strains displaying very low levels. During field cage tests, males, independently of strain, displayed two calling peaks, one peak in the morning and one peak in the afternoon, whereas males observed in the laboratory only showed a single calling peak. The results are discussed in view of the effects of mass rearing A. serpentina males in relation to potential use of the sterile insect technique.

  11. Identification of chemicals emitted by calling males of the Sapote fruit fly, Anastrepha serpentina.

    Science.gov (United States)

    Robacker, David C; Aluja, Martin; Bartelt, Robert J; Patt, Joseph

    2009-05-01

    Emissions from sexually active Anastrepha serpentina males were collected by solid-phase microextraction. Calling behavior of wild-type males showed no clear peak during the day, except that it was evident less frequently immediately after daybreak and just before dark. Calling by laboratory males was highest between 8 and 11 h after onset of the photophase, and mating by wild flies occurred mostly between 6 and 10 h after onset of the photophase. Two major components of male emissions were identified as 2,5-dimethylpyrazine (DMP) and 3,6-dihydro-2,5-dimethylpyrazine (DHDMP). DHDMP was synthesized, and the identity of the natural product confirmed by comparison of gas chromatographic retention times and mass spectrum. Emissions of DMP and DHMP were greatest during peak calling behavior, with males emitting up to 1.8 and 3.3 microg/h of DMP and DHDMP, respectively. A minor component, which did not vary with time of day, was identified as 2,3,5-trimethylpyrazine. To our knowledge, this is the first report of 3,6-dihydro-2,5-dimethylpyrazine in nature.

  12. Estimation of populations and sterility induction in Anastrepha ludens (Diptera: Tephritidae) fruit flies

    International Nuclear Information System (INIS)

    Flores, Salvador; Montoya, Pablo; Toledo, Jorge; Liedo, Pablo; Enkerlin, Walther

    2015-01-01

    The relationship between different release densities of sterile flies and fly trap captures, expressed as flies per trap per day, in the monitoring of Anastrepha ludens (Loew) populations was evaluated in mango orchards. The induction of sterility in fertile females was evaluated using different ratios of sterile: fertile males under field cage conditions. A direct relationship between recaptured flies and densities of release sterile flies was found. However, trap efficiency, expressed as percentage of recaptured flies, decreased as the density of released flies increased. Sterility induction was positively correlated to the ratio of sterile: fertile flies. A significant difference in egg fertility among treatments was observed. The trajectory of sterility induction slowed down after a sterile: wild ratio of 30:1, which suggests that this ratio could be appropriate in an sterile insect technique program with A. ludens. Sterility induction was greater when only sterile males were released than when releasing both sterile males and females, but the differences were not significant. Our findings contribute to a better interpretation of fly captures obtained from the field trapping networks, and to an improvement in the efficiency of sterile insect technique against A. ludens fruit flies, through the implementation of more rational sterile fly release densities. (author)

  13. Sterility and Sexual Competitiveness of Tapachula-7 Anastrepha ludens Males Irradiated at Different Doses.

    Science.gov (United States)

    Orozco-Dávila, Dina; Adriano-Anaya, Maria de Lourdes; Quintero-Fong, Luis; Salvador-Figueroa, Miguel

    2015-01-01

    A genetic sexing strain of Anastrepha ludens (Loew), Tapachula-7, was developed by the Mexican Program Against Fruit Flies to produce and release only males in programs where the sterile insect technique (SIT) is applied. Currently, breeding are found at a massive scale, and it is necessary to determine the optimum irradiation dose that releases sterile males with minimum damage to their sexual competitiveness. Under laboratory and field conditions, we evaluated the effects of gamma irradiation at doses of 0, 20, 40, 60 and 80 Gy on the sexual competitiveness of males, the induction of sterility in wild females and offspring survivorship. The results of the study indicate that irradiation doses have a significant effect on the sexual behavior of males. A reduction of mating capacity was inversely proportional to the irradiation dose of males. It is estimated that a dose of 60 Gy can induce more than 99% sterility in wild females. In all treatments, the degree of offspring fertility was correlated with the irradiation dose of the parents. In conclusion, the results of the study indicate that a dose of 60 Gy can be applied in sterile insect technique release programs. The application of this dose in the new genetic sexing strain of A. ludens is discussed.

  14. Effect of sucrose ingestion on the performance of wild Anastrepha obliqua (Macquart) females (Diptera: Tephritidae)

    International Nuclear Information System (INIS)

    Fontellas, Tania M.L.; Zucoloto, Fernando S.

    2003-01-01

    Carbohydrates are the main source of energy for insects and the lack of these nutrients in the diet can cause serious damage to the biology of these arthropods. In order to better understand the effect of sucrose on the performance and dietary selection of adult Anastrepha obliqua (Macquart), the following experiments were carried out: 1) effect of different amount of sucrose on diet ingestion, longevity and egg production; 2) dietary selection that contains different amounts of sucrose, and 3) discrimination threshold for sucrose in adult individuals deprived or not of carbohydrates. The control diet showed the best results in relation to ingestion, longevity and egg production for these species, probably due to the fact that it presents an optimal nutritional balance between sucrose and yeast. The control diet was also the preferred diet of females, indicating a positive correlation between the nutritional value of a diet and chemical perception by A. obliqua. Sucrose-deprived females were able to perceive lower carbohydrate quantity than non-deprived females. This characteristic might represent a biological advantage since it reduces the food foraging time for these insects. (author)

  15. Genetic variation of Anastrepha suspensa (Diptera: Tephritidae) in Florida and the Caribbean using microsatellite DNA markers.

    Science.gov (United States)

    Boykin, Laura M; Shatters, Robert G; Hall, David G; Dean, David; Beerli, Peter

    2010-12-01

    Anastrepha suspensa (Loew) (Diptera: Tephritidae), the Caribbean fruit fly, is indigenous to Florida and the Greater Antilles where it causes economic losses in fruit crops, including citrus. Because of the geographic separation of many of its native locations and anecdotal descriptions of regional differences in host preferences, there have been questions about the population structure of A. suspensa. Seven DNA microsatellite markers were used to characterize the population genetic structure of A. suspensa, in Florida and the Caribbean from a variety of hosts, including citrus. We genotyped 729 A. suspensa individuals from Florida, Puerto Rico, Cayman Island, Dominican Republic, and Jamaica. The investigated seven loci displayed from 5 to 19 alleles, with expected heterozygosities ranging from 0.05 to 0.83. There were five unique alleles in Florida and three unique alleles in the Caribbean samples; however, no microsatellite alleles were specific to a single host plant. Genetic diversity was analyzed using F(ST) and analysis of molecular variance and revealed low genetic diversity between Florida and Caribbean samples and also between citrus and noncitrus samples. Analyses using migrate revealed there is continuous gene flow between sampling sites in Florida and the Caribbean and among different hosts. These results support previous comparisons based on the mitochondrial cytochrome oxidase I locus indicating there is no genetic differentiation among locations in Florida and the Caribbean and that there is no separation into host races.

  16. Wie man Elementarteilchen entdeckt vom Zyklotron zum LHC : ein Streifzug durch die Welt der Teilchenbeschleuniger

    CERN Document Server

    Freytag, Carl

    2016-01-01

    Dieses Buch erklärt die physikalischen Grundlagen und die Technologien der Elementarteilchenforschung und beschreibt allgemeinverständlich Teilchenbeschleuniger und -detektoren sowie ihr Zusammenspiel. An einigen Meilensteinen der Forschung – von der Erzeugung von Transuranen über die Entdeckung exotischer Mesonen bis zum Higgs-Boson – zeigen die Autoren den Weg von der Theorie über das Experiment zum Forschungsergebnis auf. Gravitonen, Higgs-Teilchen, Neutrinos und Quarks – das Interesse an den kleinsten uns bekannten Teilchen ist seit Jahrzehnten ungebrochen und rückt damit auch die Laboratorien in den Blick, die an die Grenzen der Physik vorstoßen: Neben dem größten Experimentierfeld, das wir haben – dem Universum selbst - sind es die gigantischen Maschinen der Elementarteilchenphysik in Großforschungseinrichtungen wie dem CERN und dem DESY. Mit ihnen versuchen Forscher weltweit unter Einsatz extrem hoher Energien Zustände zu simulieren, wie sie zum Beginn unseres Universums kurz nach d...

  17. Response of Anastrepha suspensa (Diptera: Tepritidae) to white and brown cane, coconut, date, date jaggery and panela sugar solutions with varying degrees of fermentation

    Science.gov (United States)

    We measured the EAG response of Anastrepha suspensa (Loew), the Caribbean fruit fly to six different sugars (white and brown cane, coconut, date, date jaggery and panela sugars). Wild and lab female flies of different physiological states (immature and mature) were tested in dry crystals and 10% su...

  18. Forest fragments as barriers to fruit fly dispersal: Anastrepha (Diptera: Tephritidae) populations in orchards and adjacent forest fragments in Puerto Rico.

    Science.gov (United States)

    Jenkins, David A; Kendra, Paul E; Van Bloem, Skip; Whitmire, Stefanie; Mizell, Russ; Goenaga, Ricardo

    2013-04-01

    McPhail-type traps baited with ammonium acetate and putrescine were used to monitor populations of Anastrepha obliqua (Macquart) and Anastrepha suspensa (Loew) in two orchards with hosts of these flies (mango, Mangifera indica L., and carambola, Averrhoa carambola L.), as well as in forest fragments bordering these orchards. Contour maps were constructed to measure population distributions in and around orchards. Our results indicate that Anastrepha populations are focused around host fruit in both space and time, that traps do not draw fruit flies away from hosts, even when placed within 15 m of the host, and that lures continue to function for 6 mo in the field. The contour mapping analyses reveal that populations of fruit flies are focused around ovipositional hosts. Although the trapping system does not have a very long effective sampling range, it is ideal, when used in combination with contour analyses, for assessing fine-scale (on the order of meters) population distributions, including identifying resources around which fly populations are focused or, conversely, assessing the effectiveness of management tools. The results are discussed as they pertain to monitoring and detecting Anastrepha spp. with the McPhail-type trap and ammonium acetate and putrescine baiting system and the dispersal of these flies within Puerto Rico.

  19. Selection of oviposition sites by wild Anastrepha obliqua (Macquart) (Diptera: Tephritidae) based on the nutritional composition

    Energy Technology Data Exchange (ETDEWEB)

    Fontellas-Brandalha, Tania M.L.; Zucoloto, Fernando S. [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Filosofia, Ciencias e Letras. Dept. de Biologia]. E-mail: zucoloto@ffclrp.usp.br

    2004-09-15

    Few works have studied in detail the types of nutrients associated to hosts which are attractive to females of Anastrepha obliqua (Macquart) and influence the choice of the oviposition site. The relationship of the males in the physiology and in the behavior of those females has also been scarcely studied and some ecological relationships seem to be quite important for the knowledge of this species' biology. Our objective in this study was to evaluate the discriminatory behavior of A. obliqua between oviposition sites containing different nutrients. The presence of the male and the nutritional status of the female were also considered in this work. Two experiments were developed: in the first, the preference of A. obliqua females between artificial oviposition substrates was evaluated; in the second, females were submitted to two types of artificial oviposition substrates in the presence and in the absence of males and were fed either on a poor diet or on an adequate diet concerning sucrose concentration. In the first experiment, A. obliqua showed higher preference for substrates containing brewer's yeast and sucrose. Substrate containing only yeast was the second most accepted. Offspring development and adult feeding may have determined the choice for the substrate containing brewer's yeast and sucrose. In addition, the presence of protein in the brewer's yeast may indicate nutritional quality to the females in a more accurate way than the sucrose. In the second experiment, the brewer's yeast was the most accepted by the females. The male absence was also an important factor in the selection of hosts and in the egg production of A. obliqua. (author)

  20. Selection of oviposition sites by wild Anastrepha obliqua (Macquart) (Diptera: Tephritidae) based on the nutritional composition

    International Nuclear Information System (INIS)

    Fontellas-Brandalha, Tania M.L.; Zucoloto, Fernando S.

    2004-01-01

    Few works have studied in detail the types of nutrients associated to hosts which are attractive to females of Anastrepha obliqua (Macquart) and influence the choice of the oviposition site. The relationship of the males in the physiology and in the behavior of those females has also been scarcely studied and some ecological relationships seem to be quite important for the knowledge of this species' biology. Our objective in this study was to evaluate the discriminatory behavior of A. obliqua between oviposition sites containing different nutrients. The presence of the male and the nutritional status of the female were also considered in this work. Two experiments were developed: in the first, the preference of A. obliqua females between artificial oviposition substrates was evaluated; in the second, females were submitted to two types of artificial oviposition substrates in the presence and in the absence of males and were fed either on a poor diet or on an adequate diet concerning sucrose concentration. In the first experiment, A. obliqua showed higher preference for substrates containing brewer's yeast and sucrose. Substrate containing only yeast was the second most accepted. Offspring development and adult feeding may have determined the choice for the substrate containing brewer's yeast and sucrose. In addition, the presence of protein in the brewer's yeast may indicate nutritional quality to the females in a more accurate way than the sucrose. In the second experiment, the brewer's yeast was the most accepted by the females. The male absence was also an important factor in the selection of hosts and in the egg production of A. obliqua. (author)

  1. Male irradiation affects female remating behavior in Anastrepha serpentina (Diptera: Tephritidae).

    Science.gov (United States)

    Landeta-Escamilla, Anais; Hernández, Emilio; Arredondo, José; Díaz-Fleischer, Francisco; Pérez-Staples, Diana

    2016-02-01

    Female remating in target pest species can affect the efficacy of control methods such as the Sterile Insect Technique (SIT) but very little is known about the postcopulatory mating behavior of these pests. In this study, we investigated the remating behavior of female Anastrepha serpentina (Diptera: Tephritidae), an oligophagous pest of Sapotaceae. First, we tested how long the sexual refractory period of females lasted after an initial mating. Second, we tested the effect of male and female sterility, female ovipositing opportunities and male density on female propensity to remate. Lastly, we tested if the amount of sperm stored by females was correlated to the likelihood of females to remate. We found that receptivity of mass-reared A. serpentina females had a bimodal response, with up to 16% of mass-reared A. serpentina females remating five days after the initial copulation, decreasing to 2% at 10 and 15 days and increasing to 13% after 20 days. Compared to fertile males, sterile males were less likely to mate and less likely to inhibit females from remating. Copula duration of sterile males was shorter compared to fertile males. Remating females were less likely to mate with a sterile male as a second mate. Sterile females were less likely to mate or remate compared to fertile females. Opportunity to oviposit and male density had no effect on female remating probability. Sperm numbers were not correlated with female likelihood to remate. Information on the post-copulatory behavior of mass-reared A. serpentina will aid fruit fly managers in improving the quality of sterile males. We discuss our results in terms of the differences this species presents in female remating behavior compared to other tephritids. Copyright © 2015 Elsevier Ltd. All rights reserved.

  2. Effective sampling range of food-based attractants for female Anastrepha suspensa (Diptera: Tephritidae).

    Science.gov (United States)

    Kendra, Paul E; Epsky, Nancy D; Heath, Robert R

    2010-04-01

    Release-recapture studies were conducted with both feral and sterile females of the Caribbean fruit fly, Anastrepha suspensa (Loew) (Diptera: Tephritidae), to determine sampling range for a liquid protein bait (torula yeast/borax) and for a two-component synthetic lure (ammonium acetate and putrescine). Tests were done in a guava, Psidium guajava L., grove and involved releasing flies at a central point and recording the numbers captured after 7 h and 1, 2, 3, and 6 d in an array of 25 Multilure traps located 9-46 m from the release point. In all tests, highest rate of recapture occurred within the first day of release, so estimations of sampling range were based on a 24-h period. Trap distances were grouped into four categories (30 m from release point) and relative trapping efficiency (percentage of capture) was determined for each distance group. Effective sampling range was defined as the maximum distance at which relative trapping efficiency was > or = 25%. This corresponded to the area in which 90% of the recaptures occured. Contour analysis was also performed to document spatial distribution of fly dispersal. In tests with sterile flies, immature females dispersed farther and were recovered in higher numbers than mature females, regardless of attractant, and recapture of both cohorts was higher with torula yeast. For mature feral flies, range of the synthetic lure was determined to be 30 m. With sterile females, effective range of both attractants was 20 m. Contour maps indicated that wind direction had a strong influence on the active space of attractants, as reflected by distribution of captured flies.

  3. First survey of fruit fly (Diptera: Tephritidae and parasitoid diversity among myrtaceae fruit across the state of Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Lidia Nogueira Silva

    2011-09-01

    Full Text Available The objective of this study was to evaluate the diversity of fruit fly (Diptera: Tephritidae species that use myrtaceous fruit, particularly guava, as hosts in several localities in the state of Bahia and to determine the infestation rates, pupal viability rates, and fruit fly-parasitoid associations. Sampling of myrtaceous fruit was carried out in 24 municipalities in different regions in the state of Bahia. Four fruit fly species, Anastrepha fraterculus, Anastrepha zenildae, Anastrepha sororcula, and Ceratitis capitata were obtained from the collected fruit. Three parasitoid species (Hymenoptera: Braconidae emerged from Anastrepha larvae/pupae, Doryctobracon areolatus, Utetes anastrephae, and Asobara anastrephae. Doryctobracon areolatus emerged from A. fraterculus, A. sororcula and A. zenildae; Utetes anastrephae emerged from A. fraterculus and A. zenildae; and Asobara anastrephae emerged from A. fraterculus. Fruit fly and myrtaceous fruit associations are reported for the first time in several municipalities in the state of Bahia. A. zenildae was found infesting Syzygium malaccense for the first time in Brazil.

  4. Insecticidal effects of essential oils extracted from aromatic plants on Ceratitis capitata (Wied.) in Lebanon

    Energy Technology Data Exchange (ETDEWEB)

    Abi Chahine, M [Lebanese Agricultural Research Institute, Jdeidet el-Metn (Lebanon); Khoury, N; Webeh, E [Lebanese Agricultural Research Institute, Jdeidet el-Metn (Lebanon)

    2005-07-01

    Full text: The excessive use of chemical pesticides to control agricultural pests is becoming alarming. The objective of this study is to search for biopesticides of plant origin that could be used to control one of the major pest of fruit production; the Mediterranean fruit fly (Ceratitis capitata Wied.). A colony of the Lebanese wild strain of this insect was reared under laboratory condition to provide biological material. The insecticidal activity of the essential oils extracted from aromatic plants in Lebanon was assessed. The tested plants are: Foeniculum vulgare, Thymbra spicata, Artemisia herba alba, Origanum syriacum, Ruta chalepensis, Lavandula stoechas, Salvia fruticosa, Mentha microphylla, Juniperus oxycedrus, Rosmarinus officinalis, Myrtus communis, Laurus nobilis and Ocimum gratissimum. Results show that essential oils isolated from F. vulgare, T. spicata, A. herba alba, O. syriacum and R. chalepensis have promising insecticidal potential. (author)

  5. Some chemical elements in gamma irradiated adults of the mediterranean fruit fly , Ceratitis Capitata (WIED.)

    International Nuclear Information System (INIS)

    El-akhdar, E.A.H.

    2005-01-01

    The chemical analysis of the elemental compositions of both males and females of the Mediterranean fruit fly, Ceratitis capitata (Wied.), was conducted on adult flies irradiated in the full grown pupae with 50, 70, 90 and 110 Gray at different ages (newly emerged, 7 and 15 days old). The data revealed the presence of ten elements, three of which are major (Na, K and N), four are moderate (P, Ca, Fe and Mg) and three are minors (Zn, Mn and Cu). Their quantities, however, varied according to adult sex, age and radiation dose. In all cases, the major elements remained major, the moderate elements remained moderate and the minor elements remained minor although the elements of each group differed in their arrangement according to changes in their quantities

  6. Quantenfeldtheorie wie man beschreibt, was die Welt im Innersten zusammenhält

    CERN Document Server

    Fritzsch, Harald

    2015-01-01

    Die Geheimnisse des Mikrokosmos aufzudecken, hat die Physiker seit Jahrhunderten fasziniert. Doch obwohl in den vergangenen Jahrzehnten viele interessante Entdeckungen gemacht wurden, bleiben noch Fragen offen, die Harald Fritzsch in diesem Buch von der physikalischen und mathematischen Seite beleuchtet: - Haben die Physiker mit der Standardtheorie der Elementarteilchenphysik schon eine exakte Beschreibung der Teilchenwelt gefunden? - Gibt es wirklich eine „Große Vereinigung“ aller fundamentalen Kräfte? - Und sind die Leptonen, (wie das Elektron), oder die Bausteine der Hadronen, (die Quarks), vielleicht gar nicht wirklich punktförmig, sondern kleine eindimensionale Objekte, die man als „Strings“ bezeichnet? Dieses Buch setzt mathematische Vorbildung voraus und versteht sich als Überblick über die modernen Grundlagen der Quantenfeldtheorie und als Diskussionsbeitrag. Somit eignet sich das Werk insbesondere auch als Überblick und Wiederholung für Physiker. Harald Fritzsch ist bereits als Auto...

  7. First survey of fruit fly (Diptera: Tephritidae) and parasitoid diversity among myrtaceae fruit across the state of Bahia, Brazil

    OpenAIRE

    Silva, Lidia Nogueira; Santos, Mírian Silva; Dutra, Vivian Siqueira; Araujo, Elton Lucio; Costa, Marco Antonio; Silva, Janisete Gomes

    2011-01-01

    The objective of this study was to evaluate the diversity of fruit fly (Diptera: Tephritidae) species that use myrtaceous fruit, particularly guava, as hosts in several localities in the state of Bahia and to determine the infestation rates, pupal viability rates, and fruit fly-parasitoid associations. Sampling of myrtaceous fruit was carried out in 24 municipalities in different regions in the state of Bahia. Four fruit fly species, Anastrepha fraterculus, Anastrepha zenildae, Anastrepha sor...

  8. Disinfestation of Averrhoa carambola infested with Anastrepha obliqua (Macquart, 1835) (Diptera - Tephritidae) using gamma radiation; Desinfestacao de Averrhoa carambola infestada por Anastrepha obliqua (Macquart, 1835) (Diptera - Tephritidae) atraves de radiacao gama

    Energy Technology Data Exchange (ETDEWEB)

    Arthur, V.; Wiendl, F.M. [Centro de Energia Nuclear na Agricultura (CENA), Piracicaba, SP (Brazil)

    1994-05-01

    The disinfestation dose of gamma radiation in Averrhoa carambola infested with larvae of Anastrepha obliqua was determined. Fruits were collected in the field, each having about 11 larvae in the last instar. Fruits were irradiated with the following ganna radiation doses: 0 (control), 50, 150, 300, 600 and 900 Gy. Each treatment consisted of 9 fruits (3 replications) giving the amount of 99 larvae for each treatment. After irradiation the fruits were kept in a climatic chamber with the temperature adjusted to 25{+-} 5{sup 0} C and relative humidity of 70{+-} 5{sup 0} C, until larvae left the fruit and became transformed into pupae and adults. The lethal dose (LD{sub 100}) of gamma radiation for larvae in the fuits was 600 Gy and the dose of 50 Gy inhibited completely the total emergency of adults. (author). 19 refs, 1 figs, 1 tab.

  9. Moscas frugívoras associadas a mirtáceas e laranjeira "Céu" na região do Vale do Rio Caí, Rio Grande do Sul, Brasil Frugivorous flies in myrtaceans and orange trees 'Céu' in the region of Vale do Rio Caí, Rio Grande do Sul State, Brazil

    Directory of Open Access Journals (Sweden)

    Tacimara Gattelli

    2008-02-01

    Full Text Available Este estudo teve o objetivo de reconhecer as espécies de moscas frugívoras em mirtáceas: Eugenia uniflora L., Campomanesia xanthocarpa Berg., Psidium cattleianum Sabine, Psidium guajava L. e Acca sellowiana (Berg. Burret., bem como em Citrus sinensis (L. Osbeck (Rutaceae, na região do Vale do Caí, RS. Os frutos foram coletados no período de maturação de cada espécie frutífera, entre outubro de 2004 e julho de 2005, levados ao laboratório e acondicionados em potes com areia mantidos a 25 ± 1°C; 80 ± 10% UR e fotofase de 12 horas. Os pupários obtidos foram individualizados e suas características foram registradas. De Tephritidae foi registrada apenas Anastrepha fraterculus (Wiedemann e de Lonchaeidae Neosilba n. sp. 3, Neosilba zadolicha McAlpine & Steyskal e Neosilba certa (Walker. As duas últimas são novos registros para o Rio Grande do Sul. Apenas em P. cattleianum foram registradas todas as espécies de moscas encontradas neste trabalho. Os resultados evidenciam que A. fraterculus é a espécie de mosca-das-frutas de maior ocorrência para a região do Vale do Caí, RS, nas frutíferas estudadas.This study aimed at recognizing frugivorous flies species in Myrtaceae: Eugenia uniflora L., Campomanesia xanthocarpa Berg. Psidium cattleianum Sabine, Psidium guajava L. and Acca sellowiana (Berg. Burret., as well as in Citrus sinensis (L. Osbeck (Rutaceae, at Vale do Cai region, Rio Grande do Sul. Fruits were collected at the maturation stage of each fruit species between October 2004 and July 2005, and at the laboratory they were placed in pots with sand and were kept at 12h photoperiod, 80 ± 10% RH and 25 ± 1°C. Pupae were individualized and their characteristics were recorded. In Tephritidae only Anastrepha fraterculus (Wied. was recorded and in Lonchaeidae, Neosilba n. sp. 3, Neosilba zadolicha McAlpine & Steyskal and Neosilba certa (Walker. These last two species were recorded for the first time in Rio Grande do Sul. Only on

  10. Selection by mating competitiveness improves the performance of Anastrepha ludens males of the genetic sexing strain Tapachula-7.

    Science.gov (United States)

    Quintero-Fong, L; Toledo, J; Ruiz, L; Rendón, P; Orozco-Dávila, D; Cruz, L; Liedo, P

    2016-10-01

    The sexual performance of Anastrepha ludens males of the Tapachula-7 genetic sexing strain, produced via selection based on mating success, was compared with that of males produced without selection in competition with wild males. Mating competition, development time, survival, mass-rearing quality parameters and pheromone production were compared. The results showed that selection based on mating competitiveness significantly improved the sexual performance of offspring. Development time, survival of larvae, pupae and adults, and weights of larvae and pupae increased with each selection cycle. Differences in the relative quantity of the pheromone compounds (Z)-3-nonenol and anastrephin were observed when comparing the parental males with the F4 and wild males. The implications of this colony management method on the sterile insect technique are discussed.

  11. Establishment of a colony of Anastrepha ludens (Diptera: Tephritidae) under relaxed mass-rearing conditions in Mexico

    International Nuclear Information System (INIS)

    Orozco-Davila, Dina; Hernandez, Refugio; Solis, Eduardo; Quintero, J. Luis; Dominguez, Julio

    2006-01-01

    Several studies have suggested that maintaining a line of insects under laboratory conditions reduces their biological attributes. With this principle in mind, the mass production of Anastrepha ludens originating from a colony raised under relaxed rearing conditions was evaluated over a period of three years. The results of the evaluation indicated that insects kept under these conditions reached their larval maturity in 10 days, and attained a greater weight, which has a direct influence on pupal quality. In adult cages having a fly density of 70,000 individuals, there was a lower level of stress which favored fecundity. Fertility was apparently not affected by the cage density. These results suggest that keeping a production line under relaxed conditions optimizes insect production and promotes higher quality. (author)

  12. Establishment of a colony of Anastrepha ludens (Diptera: Tephritidae) under relaxed mass-rearing conditions in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Orozco-Davila, Dina; Hernandez, Refugio; Solis, Eduardo; Quintero, J. Luis; Dominguez, Julio, E-mail: dorozco1@prodigy.net.m [United States Department of Agriculture, Gainesville, FL (United States). Agricultural Research Service. Center for Medical, Agricultural, and Veterinary Entomology; Sigma Space Corporation, MD(United States); Programa Moscamed Moscafrut-Desarrollo de Metodos, Chiapas (Mexico)

    2006-07-01

    Several studies have suggested that maintaining a line of insects under laboratory conditions reduces their biological attributes. With this principle in mind, the mass production of Anastrepha ludens originating from a colony raised under relaxed rearing conditions was evaluated over a period of three years. The results of the evaluation indicated that insects kept under these conditions reached their larval maturity in 10 days, and attained a greater weight, which has a direct influence on pupal quality. In adult cages having a fly density of 70,000 individuals, there was a lower level of stress which favored fecundity. Fertility was apparently not affected by the cage density. These results suggest that keeping a production line under relaxed conditions optimizes insect production and promotes higher quality. (author)

  13. Die häufigsten Fehler bei der FMEA-Anwendung und wie ich sie vermeiden kann

    OpenAIRE

    Schloske, Alexander

    2010-01-01

    Die FMEA stellt heutzutage eines der wichtigsten Werkzeuge des präventiven Risikomanagements dar. Die universell anwendbare Vorgehensweise des VDA hat sich dabei in der Industrie etabliert. Der Beitrag beschreibt aus der Sicht von 20 Jahren FMEA-Erfahrung, wie die FMEA zielführend erstellt wird und mit welchen Tipps und Tricks eine effiziente und effektive FMEA-Erstellung ermöglicht wird.

  14. Die Entdeckung des Higgs-Teilchens oder wie das Universum seine Masse bekam

    CERN Document Server

    2013-01-01

    Im Oktober 2013 setzte der Nobelpreis für Peter Higgs und François Englert den vorläufigen Höhepunkt in der verrückten Geschichte um das sogenannte Gottesteilchen, das Higgs-Boson. Schon im Juli des Vorjahres hatten die Physiker weltweit gejubelt: Mehr als fünfzig Jahre nachdem Peter Higgs und andere Wissenschaftler die Existenz des Teilchens theoretisch begründet hatten, war es im gigantischen Teilchenbeschleuniger CERN gefunden worden. Jetzt erzählen Harald Lesch und seine Co-Autoren, warum sich rund um das Higgs-Teilchen so viele skurrile Missverständnisse und mediale Sensationen ranken. Gewohnt kurzweilig und gut verständlich enthüllen sie, wie aus dem verzweifelt gesuchten „gottverdammten Teilchen“ das Gottesteilchen wurde, dass der Urknall nicht simuliert werden kann und dass Schwarze Löcher nicht unbedingt alles verschlingende Monster sind. Dabei wird deutlich, dass die Suche nach den geheimnisvollen Kräften, die das Universum, unsere Erde und letztlich auch uns Menschen zusammenhalten...

  15. ANÁLISE FAUNÍSTICA E FLUTUAÇÃO POPULACIONAL DE MOSCAS-DAS-FRUTAS (DIPTERA: TEPHRITIDAE EM BELMONTE, BAHIA

    Directory of Open Access Journals (Sweden)

    MÍRIAN DA SILVA SANTOS

    2011-01-01

    Full Text Available This study was carried out in a mixed orchard in the municipality of Belmonte, in the southernmost region of Bahia and it aimed at characterizing the fruit fly (Diptera: Tephritidae population using faunistic analysis and studying its population fluctuation. The study was conducted from August 2007 to August 2009. Fruit fly captures were carried out using McPhail traps baited with protein hydrolisate at 5%. Weekly, the captured insects found in traps were transferred to plastic vials, one vial per trap, filled with 70% ethanol and taken to the laboratory for identification. A total of 9,709 fruit flies was captured, out of which 9,477 specimens were Anastrepha (5,908 females and 3,569 males and 232 specimens were Ceratitis capitata (Wiedemann (201 females and 31 males. Nine species of Anastrepha were recorded: Anastrepha bahiensis (Lima (2.59%, Anastrepha distincta (Greene (2.71%, Anastrepha fraterculus (Wiedemann (59.37%, Anastrepha leptozona (Hendel (0.02%, Anastrepha manihoti (Lima (0.02%, Anastrepha obliqua (Macquart (2.98%, Anastrepha serpentina (Wiedemann (0.07%, Anastrepha sororcula Zucchi (29.14%, Anastrepha zenildae Zucchi (0.22%, and C. capitata (2.88%. Anastrepha fraterculus and A. sororcula were the dominant species and only A. fraterculus was constant on the orchard. The values of the Simpson (0.51 and of Shannon (01.35 indices were intermediate and the modified Hill index was 0.49, indicating a medium diversity. The high est capturevalues of Anastrepha spp. occurred from July to December 2008, with a population peak in September.

  16. Biological Studies On The Radioprotective Role Of Melatonin On The Medfly Ceratitis Capitata (WIED.), Sterile Males

    International Nuclear Information System (INIS)

    SHOMAN, A.A.; MAHMOUD, E.A.

    2010-01-01

    The sterile insect technique (SIT) has been used successfully against the medfly. The use of gamma irradiation for sterilizing insects has some adverse effects on their competitiveness which in turn reduces the efficiency of the technique. This study was carried out to evaluate the radioprotective effects of melatonin (N-acetyl-5-methoxytyrptamine) on egg hatchability, larval duration, pupal recovery, pupal weight, adult recovery, sex ratio, adult survival, flight ability and mating competitiveness of the medfly, Ceratitis capitata (Wied.), sterile males against the oxidative stress induced by gamma radiation. The results showed that the use of melatonin before the application of radiation doses did not affect the percentages of egg hatchability, larval duration and pupal weight while the addition of melatonin to the larval diet led to a significant increase in the percent of the pupal recovery as compared with the control group. The results also showed significant increases in adult recovery, adult survival and flight ability of males reared on larval diet containing melatonin before irradiation as compared to those treated with radiation alone. The competitiveness values were drastically decreased (0.30, 0.17 and 0.19) with the increase of gamma irradiation (90, 100 and 110 Gy, respectively). However, the results showed that the competitiveness values were increased in males previously reared on a larval diet containing 1 g melatonin/kg larval media (0.1%) and the produced full grown pupae were irradiated with 90, 100 and 110 Gy. The highest male mating competitiveness was recorded when melatonin was added to the larval diet then irradiated the produced pupae with the sterilizing dose (90 Gy). The results showed that the competitiveness values were 0.67, 0.47 and 0.46 for the doses 90, 100 and 110 Gy, respectively. The results refer to availability of using melatonin as a simple and effective means to improve the quality and the male mating competitiveness of the

  17. Associative learning in wild Anastrepha obliqua females (Diptera, Tephritidae related to a protein source Aprendizagem associativa em fêmeas selvagens de Anastrepha obliqua (Diptera, Tephritidae em relação a uma fonte protéica

    Directory of Open Access Journals (Sweden)

    Carla Cresoni-Pereira

    2006-03-01

    Full Text Available The aim of the present study was to determine whether wild adult Anastrepha obliqua (Macquart, 1835 females are able to associate a compound (quinine sulphate - QS not related to their habitual diet with a protein-enriched food. Females were first fed on diets based on brewer yeast and sucrose containing or not QS. The groups were then allowed to choose between their original diets and a diet with or without QS, depending on the previous treatment, and between a diet based on agar and a diet containing agar and QS. When the nutritional value of the diets was adequate, the females did not show any preference for the diet with or without QS. With respect to the agar diet and the agar + QS diet, females previously fed on a nutritive diet containing QS preferred the diet containing QS, indicating an association between the compound and the nutritional value of the diet. The importance of this behavioral strategy is discussed.O objetivo do presente estudo foi determinar se fêmeas adultas selvagens de Anastrepha obliqua (Macquart, 1835 são capazes de associar um composto (sulfato de quinino-SQ não-relacionado à sua dieta habitual com um alimento rico em proteínas. Primeiro, as fêmeas foram alimentadas com dietas à base de lêvedo de cerveja e sacarose contendo ou não SQ. Os grupos foram então colocados para escolher entre sua dieta original e dietas com ou sem SQ, dependendo do tratamento prévio, e entre uma dieta à base de agar somente e outra à base de agar e SQ. Quando o valor nutricional das dietas era adequado, as fêmeas não mostraram nenhuma preferência para a dieta com ou sem SQ. Em relação às dietas de agar e agar+SQ, fêmeas previamente alimentadas com uma dieta nutritiva contendo SQ preferiram a dieta contendo SQ, indicando uma associação entre o composto e o valor nutricional da dieta. A importância desta estratégia comportamental é discutida.

  18. There is no magic fruit fly trap: multiple biological factors influence the response of adult Anastrepha ludens and Anastrepha obliqua (Diptera: Tephritidae) individuals to MultiLure traps baited with BioLure or NuLure.

    Science.gov (United States)

    Díaz-Fleischer, Francisco; Arredondo, José; Flores, Salvador; Montoya, Pablo; Aluja, Martín

    2009-02-01

    Field-cage experiments were performed to determine the effectiveness of MultiLure traps (Better World MFG Inc., Fresno, CA) baited with NuLure (Miller Chemical and Fertilizer Corp., Hanover, PA) or BioLure (Suterra LLC, Inc., Bend, OR) in capturing individually marked Mexican fruit fly, Anastrepha ludens (Loew), and West Indian fruit fly, Anastrepha obliqua (Macquart) (Diptera: Tephritidae), of both sexes. Experimental treatments involved wild and laboratory-reared flies of varying ages (2-4 and 15-18 d) and dietary histories (sugar only, open fruit, open fruit plus chicken feces, and hydrolyzed protein mixed with sugar). Data were divided into two parts: total captures over a 24-h period and trap visits/landings, entrances into interior of trap ,and effective captures (i.e., drowning in liquid bait or water) over a 5-h detailed observation period (0600-1100 hours). The response to the two baits varied by fly species, gender, physiological state, age, and strain. Importantly, there were several highly significant interactions among these factors, underlining the complex nature of the response. The two baits differed in attractiveness for A. obliqua but not A. ludens. The effect of strain (wild versus laboratory flies) was significant for A. ludens but not A. obliqua. For effect of dietary history, adults of both species, irrespective of sex, were significantly less responsive to both baits when fed on a mixture of protein and sugar when compared with adults fed the other diets. Finally, we confirmed previous observations indicating that McPhail-type traps are quite inefficient. Considering the total 24-h fly tenure in the cage, and independent of bait treatment and fly type (i.e., strain, adult diet, gender and age), of a total of 2,880 A. obliqua and 2,880 A. ludens adults released into the field cages over the entire study (15 replicates), only 564 (19.6%) and 174 (6%) individuals, respectively, were effectively caught. When only considering the 5-h detailed

  19. Status of the control of mediterranean fruit fly, ceratitis capitata (WIED.) using the sterile insect technique (SIT). Vol. 1

    Energy Technology Data Exchange (ETDEWEB)

    Wakid, A M [Biological Application Department, Nuclear Research Center, Atomic Energy Authority, Cairo (Egypt)

    1996-03-01

    This note presents the importance of the medfly, ceratitis capitata (Wied.) in the world especially in the med east region including egypt. Evaluation of the control methods used and the application of the sterile insect technique (SIT) as a successful and safe method for the fly eradication or control in many countries are considered. Moreover, the important requirements for a successful SIT programme and the trial for improvement of this technique are discussed including the improvement of the larval rearing media, male only release, trapping and attracting systems of the adult fly, and the current research on genetic sexing for elimination of females that cause great losses to after release.

  20. Status of the control of mediterranean fruit fly, ceratitis capitata (WIED.) using the sterile insect technique (SIT). Vol. 1

    International Nuclear Information System (INIS)

    Wakid, A.M.

    1996-01-01

    This note presents the importance of the medfly, ceratitis capitata (Wied.) in the world especially in the med east region including egypt. Evaluation of the control methods used and the application of the sterile insect technique (SIT) as a successful and safe method for the fly eradication or control in many countries are considered. Moreover, the important requirements for a successful SIT programme and the trial for improvement of this technique are discussed including the improvement of the larval rearing media, male only release, trapping and attracting systems of the adult fly, and the current research on genetic sexing for elimination of females that cause great losses to after release

  1. BIOINFORMATICS MODEL OF THE CARAPACE SCUTE PATTERN OF THE RED-EARED SLIDER TRACHEMYS SCRIPTA ELEGANS (WIED-NEUWIED, 1839

    Directory of Open Access Journals (Sweden)

    Andrey Kiladze

    2017-10-01

    Full Text Available The scutes located on the carapace of the red-eared slider Trachemys scripta elegans (Wied-Neuwied, 1839 have been modeled. Bioinformatics modeling of carapace’s scutes were carried out by utilizing the Voronoi decomposition and Delaunay triangulation method. These two geometric techniques allow the patterns of vertebral and costal scutes to be recreated. The proposed model may have a certain value for taxonomy as well as for estimating the symmetry of the morphological structures, which is important for the purposes of biomimetics.

  2. Współczesna architektura wieżowców w stolicy Kataru – Dausze

    OpenAIRE

    Jerzy Szołomicki; Hanna Golasz-Szołomicka

    2017-01-01

    W artykule przedstawiono elementy analizy architektonicznej i konstrukcyjnej wybranych wieżowców ze stolicy Kataru Dohy zlokalizowanych w dzielnicy biznesowej West Bay oraz w kompleksie sportowym Aspire Zone. Analizując architekturę Dohy można stwierdzić, że obecnie jest to bardzo szybko rozwijająca się metropolia, która jest uznawana wraz z Dubajem za najbardziej zaawansowane technologicznie miasto świata w kategorii budynków inteligentnych. Koniunktura budowlana i rozwój konstrukcyjny spowo...

  3. World-wide sexual compatibility in Medfly, Ceratitis capitata (Wied.), and its implications for SIT

    International Nuclear Information System (INIS)

    Cayol, J.P.

    2000-01-01

    The concept of the sterile insect technique, described by Knipling (1953), to control and/or eradicate insect pest populations has been applied to many Lepidoptera and Diptera species. Among Diptera species, the Mediterranean fruit fly, Ceratitis capitata (Wied.) (Diptera: Tephritidae), is often referred to as the most important agricultural pest in the world (Liquido et al. 1990) and it is also a major target of SIT action programmes world-wide. The use of SIT requires that mass rearing facilities be developed to produce sterile insects for use in national programmes, with mass reared strains being established by colonising wild insects collected from the SIT target area. More recently, with the increasing demand for sterile Medflies and the limited number of production facilities, some rearing facilities began to export Medflies to other national/regional programmes. Eight facilities have now reached production levels which allow them to export sterile insects (Fisher and Caceres 199) on a regional or inter-regional basis. When this procedure is used, the flies released have to compete with wild flies of a different geographic origin. The increasing use of Medfly genetic sexing strains (GSS) has also resulted in the same strain being used in different countries. To date, five rearing facilities in the world produce GSS (Fisher and Caceres 1999). Since GSS are assembled from specific components, it is impossible to 'colonise' them from each country where sterile GSS flies are needed. The GSS are often backcrossed with insects from the target population to increase the genetic variability (Franz et al. 1996), although in some cases this presents problems (Franz, personal communication). In practice, a single wild population is used as a basis for the synthesis of the GSS. Consequently, the same GSS based on the same wild genetic material may be used in various countries/continents and the question was raised concerning the sexual compatibility of these strains with

  4. Midgut Protease Activity During Larval Development of Anastrepha obliqua (Diptera: Tephritidae) Fed With Natural and Artificial Diet

    Science.gov (United States)

    Rivera-Ciprian, José Pedro; Aceituno-Medina, Marysol; Guillen, Karina

    2017-01-01

    Abstract In this study, we examined the activity of two serine proteases (chymotrypsin and trypsin) and two metalloproteases (carboxypeptidases A and B) during larval development in Anastrepha obliqua fed natural (mango fruit) and artificial (formulation used in mass-rearing) diets. Proteolytic activity of chymotrypsin, trypsin, carboxypeptidase A, and carboxypeptidase B was detected in the midgut of different instars of A. obliqua and was strongly affected by the pH and diet type. The protein content of the natural and artificial diets was similar. Enzymatic activity was higher in the midgut of the larvae fed the natural diet than in larvae fed the artificial diet. The activity of the endopeptidases (chymotrypsin and trypsin) was lower than those of the exopeptidases (carboxypeptidases A and B). The pH of the midgut varied from acidic to neutral. The results indicate that in the midgut of the larvae reared on both types of diet, the level of carboxypeptidase activity was approximately 100-fold greater than the level of chymotrypsin activity and 10,000-fold greater than the level of trypsin. In conclusion, carboxypeptidase A and B are the main proteases involved in the digestion of proteins in the larvae of A. obliqua. The natural diet showed a high bioaccessibility. A clear tendency to express high activities of chymotrypsin and trypsin was observed by the third instar. Our research contributes to the planning and development of novel bioaccessibility assays to understand the nutrition processing of A. obliqua larvae under mass-rearing conditions for sterile insect technique.

  5. Genetic diversity and population structure of Anastrepha striata (Diptera: Tephritidae) in three natural regions of southwestern Colombia using mitochondrial sequences.

    Science.gov (United States)

    Gallo-Franco, Jenny Johana; Velasco-Cuervo, Sandra Marcela; Aguirre-Ramirez, Elkin; González Obando, Ranulfo; Carrejo, Nancy Soraya; Toro-Perea, Nelson

    2017-02-01

    Anastrepha striata is widely distributed across the Americas and is a pest of economically important crops, especially crops of the Myrtaceae family. Insect population structures can be influenced by the presence of physical barriers or characteristics associated with habitat differences. This study evaluated the effect of the Western Andes on the population structure of A. striata. Individuals were collected from Psidium guajava fruits from three natural regions of southwestern Colombia (Pacific Coast, mountainous region and the inter-Andean valley of the Cauca River). Based on a 1318 bp concatenated of the genes Cytochrome Oxidase subunit I (COI) and NADH dehydrogenase subunit 6 (ND6), 14 haplotypes with few changes among them (between 1 and 3) were found. There was only one dominant haplotype in all three regions. No genetic structure associated with the three eco-geographical regions of the study was found. Moreover, the Western Andes are not an effective barrier for the genetic isolation of the populations from the Pacific Coast compared with the inter-Andean valley populations. This genetic homogeneity could be partially due to anthropogenic intervention, which acts as a dispersal agent of infested fruits. Another hypothesis to explain the lack of structure would be the relatively recent arrival of A. striata to the region, as indicated by an analysis of the demographic history, which reveals a process of population expansion. This study represents the first attempt to understand the population genetics of A. striata in Colombia and could contribute to the integral management of this pest.

  6. Carambola Cultivar, Fruit Ripeness, and Damage by Conspecific Larvae Influence the Host-Related Behaviors of Anastrepha obliqua (Diptera: Tephritidae).

    Science.gov (United States)

    López-Ley, Jorge Ulises; Toledo, Jorge; Malo, Edi A; Gomez, Jaime; Santiesteban, Antonio; Rojas, Julio C

    2016-02-01

    In this study, we investigated the influence of cultivar type, fruit ripeness, and damage by conspecific larvae on the attraction of Anastrepha obliqua (Macquart) (Diptera: Tephritidae) to and oviposition on carambola fruit (Averroha carambola L.). The attraction of both sexes of A. obliqua to fruit of different quality was evaluated through cage experiments in the field, and the oviposition preferences of mated females were examined in laboratory tests. Both sexes, mated or virgin, were more attracted to the "Maha" fruit than to the "Golden Star" fruit, and the females oviposited more frequently on the Maha cultivar than the Golden Star cultivar. Both sexes were more attracted to ripe and half-ripe Maha fruits than to mature green fruit, and although females did not show a preference for ovipositing on half-ripe or ripe fruits, they did not oviposit on mature green fruits. Males did not show a preference for the volatiles from uninfested, artificially damaged, or infested Maha fruits, but females were more attracted to uninfested fruits than to artificially damaged and infested Maha fruits. Furthermore, females preferred to oviposit on uninfested fruits compared with artificially damaged fruit, and they did not oviposit on infested fruits. © The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  7. A catalog of bird specimens associated with Prince Maximilian of Wied-Neuwied and potential type material in the natural history collection in Wiesbaden

    Directory of Open Access Journals (Sweden)

    Dorothee Hoffmann

    2013-11-01

    Full Text Available Bird specimens collected by 19th century explorer and ornithologist Prince Maximilian of Wied-Neuwied form one of the foundation collections of the American Museum of Natural History in New York. However, parts of his collection remained in Germany and came to the Museum Wiesbaden. Since Wied described numerous new species without designating types, some of these specimens might be type material. Here we present a catalog of the 30 Wiesbaden specimens associated with him and discuss their potential type status. We conclude that 17 individuals in 11 species are potential type specimens that should be considered in future taxonomic work.

  8. Dum lucet - bibamus sodales. Ob und wie wir Archäologen die Alten verstehen

    Directory of Open Access Journals (Sweden)

    Iva Mikl Curk

    2004-12-01

    Full Text Available In welchem Umfang können die Leute des Altertums von Achäologen verstanden werden? Wir wählen zum Titel des Aufsatzes einen Teil der Inschrift vom ACO-Becher aus Virunum (jetzt im Landesmuseum Klagenfurt, da wir ein Thema über die materielle Kultur aus der Römerzeit bearbeiten. Die Römerzeit ist nämlich die älteste Periode in der Geschichte des östlichen Alpen- und nordadriatischen Raums, so auch Sloweniens, und zeugt auch durch direkte schriftliche Quellen von sich selbst. So kann das Verfolgen der Tatsachen, wie gewisse Erscheinungsformen an Artefakten durch die archäologische Forschung verstanden sind, besonders aufregend werden. Wir richten unsere Aufmerksamkeit auf drei Beispiele, die in vergangenen Jahrzehnten durch Publikation etwas mehr ins Blickfeld geraten sind. Auch Trinkgefäße befinden sich darunter. An erster Stelle ist die Rede vom glirarium - dem töpfernen »Käfig« für Siebenschläfer - von Poetovio (heute Ptuj, Slowenien. Das Gefäß wurde als Graburne im (späten 2. Jh. verwendet. Zu dieser Art von Verwendung wurde in den bisherigen Bearbeitungen nur einmal Stellung genommen (Mikl Curk 1986 und die Vermutung geäußert, man habe zur Zeit der Grablegung möglicherweise den wahren Zweck des Gefäßes nicht mehr gekannt. Doch heute wird eine neue Deutung vorgeschlagen: Beim Vorkommen eines solchen Gefäßes im Grab soll es sich um ein Symbol handeln. Dieses Symbol soll, mit gewissen weiteren aus den römischen Brandgräbern in Slowenien essbaren Grabbeigaben (Muscheln, Schnecken, den Gedanken an das - unter der Erscheinung des Todes - schlummernde Leben darstellen. Die verschlossenen Muschel- und Schneckenschalen haben ja die Form eines leblosen Steines, so wie auch der Siebenschläfer während des Winterschlafes tot zu sein scheint. Solche Beigaben brachten uns auf den Gedanken, eine weitere Zahl von Geschirr-Beigaben auch in solch einem Sinn zu deuten (Mikl Curk 1985; 1985a; 1999; 2001. Diese eventuell sogar in

  9. Soft tissue sarcoma: how can posttreatment alterations be distinguished from recurrences?; Weichteilsarkome: Wie lassen sich posttherapeutische Veraenderungen von Rezidiven unterscheiden

    Energy Technology Data Exchange (ETDEWEB)

    Noebauer-Huhmann, I.M. [Universitaetsklinik fuer Radiologie und Nuklearmedizin, Abteilung fuer Neuroradiologie und Muskuloskeletale Radiologie, Wien (Austria); Grieser, T. [Klinikum Augsburg, Klinik fuer Diagnostische und Interventionelle Radiologie und Neuroradiologie, Augsburg (Germany)

    2017-11-15

    The recognition of recurrent soft tissue sarcomas and the differentiation from post-treatment alterations is complex. This article aims to assist the clinical radiologist in the systematic evaluation of local follow-up imaging in soft tissue sarcoma patients. Soft tissue sarcomas encompass multiple entities with different recurrence rates and follow-up intervals. Approved and up to date recommendations are provided, including imaging techniques. The past medical history of the patient, the clinical situation and previous therapies should be known in detail, including surgery, radiation therapy and chemotherapy. Previous imaging results should be consulted, if available. This article describes the time-dependent imaging spectrum of local post-therapeutic as well as local treatment-related complications. These include early complications, such as seromas, hematomas and infections, as well as late complications, including edema, fibrosis and joint stiffness, and also inflammatory pseudotumors, which may occur after variable time intervals. The imaging appearance of local recurrent and radiation-associated sarcoma are elucidated. In particular, magnetic resonance imaging (MRI) criteria are provided, which may help in differentiating post-therapeutic alterations from recurrent soft tissue sarcomas. (orig.) [German] Die Erkennung von Weichteilsarkomrezidiven und ihre Differenzierung von posttherapeutischen Veraenderungen sind komplex. Der Beitrag soll dem klinisch taetigen Radiologen helfen, lokale Nachkontrollen systematisch zu beurteilen. Voraussetzungen sind einerseits die genaue Kenntnis der klinischen und therapeutischen Anamnese und der aktuellen klinischen Situation sowie andererseits eine adaequate Untersuchungstechnik, fuer die Empfehlungen gegeben werden, und ein Vergleich mit der initialen Bildgebung. Der Beitrag gibt einen Ueberblick ueber Rezidivhaeufigkeiten und Therapiemodalitaeten wie der Operation, Bestrahlung und Chemotherapie. Er beschreibt das MR

  10. Współczesna architektura wieżowców w stolicy Kataru – Dausze

    Directory of Open Access Journals (Sweden)

    Jerzy Szołomicki

    2017-12-01

    Full Text Available W artykule przedstawiono elementy analizy architektonicznej i konstrukcyjnej wybranych wieżowców ze stolicy Kataru Dohy zlokalizowanych w dzielnicy biznesowej West Bay oraz w kompleksie sportowym Aspire Zone. Analizując architekturę Dohy można stwierdzić, że obecnie jest to bardzo szybko rozwijająca się metropolia, która jest uznawana wraz z Dubajem za najbardziej zaawansowane technologicznie miasto świata w kategorii budynków inteligentnych. Koniunktura budowlana i rozwój konstrukcyjny spowodowały wznoszenie ikonicznych wieżowców, obiektów widowiskowo-sportowych oraz muzeów. W pierwszej części artykułu zwrócono uwagę na to jak w ciągu kilkunastu lat Doha dołączyła do najciekawszych architektonicznie miast świata ze względu na gwałtowny rozwój gospodarczy wynikający ze znalezienia ogromnych złóż ropy naftowej i gazu ziemnego. Punktem zwrotnym była organizacja XV Igrzysk Azjatyckich w 2006 roku. W wyniku sukcesu ekonomicznego tych igrzysk ponad 100 budynków wysokich i wysokościowych było planowanych do budowy w dzielnicy biznesowej West Bay i przyległych dzielnicach. Oczywiście rozwój architektoniczny miasta nie mógłby się odbyć bez uczestnictwa w nim wybitnych zagranicznych architektów takich, jak na przykład Jean Nouvell, Ieoh Pei, czy Arata Isozaki. W drugiej części artykułu omówiono wieżowce w dzielnicy West Bay: Doha Tower, Al Bidda Tower, Tornado Tower oraz znajdującą się w kompleksie sportowym Aspire Tower. Budynki te stanowią obecnie znak rozpoznawczy Kataru na całym świecie.

  11. Development and reproductive biology of the egg-pupal parasite, Fopius arisanus in Anastrepha suspensa, a new tephritid host

    International Nuclear Information System (INIS)

    Lawrence, Pauline O.; Harris, Ernest J.; Bautist, Renato C.

    2000-01-01

    Fopius (=Biosteres) arisanus (Sonan) (=Opius oophilus Fullaway) (Hymenoptera: Braconidae) is a solitary egg parasite (parasitoid) that attacks tephritid fruit fly (Diptera: Tephritidae) eggs and first instars (Haramoto 1953, Clausen et al. 1965, Harris and Okamoto 1991). It completes its development within the host's larva and pupa and emerges from the latter as an adult and as such, is an egg-pupal endoparasite. F. arisanus is known to attack at least seven tephritid fruit fly species (Wharton and Gilstrap 1983) and appears to be the only egg-pupal parasite of tephritids in the Western Hemisphere. It is considered to be the most successful of the parasites that attack the Oriental fruit fly, Bactrocera dorsalis (Hendel) and the Mediterranean fruit fly (Medfly), Ceratitis capitata (Weidmann) in Hawaii (Knipling 1995), resulting in 74-92% of total parasites recovered from both host species (Wong and Ramadan 1987). However, in Malaysia, Palacio et al. (1992) found that F. arisanus was outcompeted by the larval endoparasite, Diachasmimorpha longicaudata (Ashmead) (Hymenoptera: Braconidae) in multiple parasitised B. dorsalis. While several larval parasites of tephritids had been cultured successfully in the laboratory (Ramadan 1991) and utilised in inundative release programmes, F. arisanus proved difficult to maintain in culture. In recent years, a laboratory strain of F. arisanus (termed the 'Harris strain') has been established on B. dorsalis (Harris and Okamoto 1991). Efforts are currently in progress to mass rear this strain on the Medfly and other tephritid pests. F. arisanus was first released into Florida from Hawaii in 1974-75 as a biological control agent against the Caribbean fruit fly (Caribfly) Anastrepha suspensa (Loew) (Diptera: Tephritidae) but this was unsuccessful (Baranowski et al. 1993). Interestingly, it was also introduced into Costa Rica from Hawaii and was subsequently reared from puparia of Anastrepha spp. (Wharton et al. 1981), indicating its

  12. Status of the Caribbean fruit fly, Anastrepha suspensa (Loew), sterile insect technique programme in the state of Florida, USA - November 1996

    International Nuclear Information System (INIS)

    Holler, T.C.; Harris, D.L.; Burns, R.E.

    1999-01-01

    Status of the Caribbean fruit fly, Anastrepha suspensa, Loew, sterile insect technique program in the state of Florida, USA - November 1996. Application of sterilization techniques to Anastrepha suspensa in Florida was conducted as early as 1970 in Key West. In 1988-1990, releases of sterile flies were made in a 20 km 2 urban area in southwestern Florida adjacent to commercial citrus. With the intent to integrate a sterile insect technique system within a fly-free management program for the caribfly, additional tests are being conducted both within a major citrus production area and in an isolated urban location of the mid to lower Florida peninsula. Tests at the former site measures the synergistic effect of augmenting sterile fly releases with parasitoids, whereas the latter studies will define the efficacy of reduced numbers of sterile flies released per acre than is standard in medfly and medfly eradication and suppression programs. Discussed here is the progress of an ongoing project to measure the benefits of SIT as it applies to caribfly export protocols. (author)

  13. Geostatistics and Geographic Information System to Analyze the Spatial Distribution of the Diversity of Anastrepha Species (Diptera: Tephritidae): the Effect of Forest Fragments in an Urban Area.

    Science.gov (United States)

    Garcia, A G; Araujo, M R; Uramoto, K; Walder, J M M; Zucchi, R A

    2017-12-08

    Fruit flies are among the most damaging insect pests of commercial fruit in Brazil. It is important to understand the landscape elements that may favor these flies. In the present study, spatial data from surveys of species of Anastrepha Schiner (Diptera: Tephritidae) in an urban area with forest fragments were analyzed, using geostatistics and Geographic Information System (GIS) to map the diversity of insects and evaluate how the forest fragments drive the spatial patterns. The results indicated a high diversity of species associated with large fragments, and a trend toward lower diversity in the more urbanized area, as the fragment sizes decreased. We concluded that the diversity of Anastrepha species is directly and positively related to large and continuous forest fragments in urbanized areas, and that combining geostatistics and GIS is a promising method for use in insect-pest management and sampling involving fruit flies. © The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  14. Sexual Competitiveness of Anastrepha ludens (Diptera: Tephritidae) Males Exposed to Citrus aurantium and Citrus paradisi Essential Oils.

    Science.gov (United States)

    Morató, Santiago; Shelly, Todd; Rull, Juan; Aluja, Martin

    2015-04-01

    Males of the Mediterranean fruit fly (Ceratitis capitata (Wiedemann)) display increased mating competitiveness following exposure to the odor of certain host and nonhost plants, and this phenomenon has been used in the sterile insect technique to boost the mating success of released, sterile males. Here, we aimed to establish whether males of the Mexican fruit fly (Anastrepha ludens (Loew)) gain a mating advantage when exposed to the aroma of two preferred hosts, grapefruit (Citrus paradisi Macfadyen) and bitter orange (Citrus aurantium L.). Under seminatural conditions, we observed that, in trials using wildish males (from a young laboratory colony started with wild flies) exclusively, exposure to the aroma of bitter orange had no effect on male mating success but exposure to the odor grapefruit oil increased male mating success significantly. In a separate test involving both exposed and nonexposed wildish and mass-reared, sterile males, although wildish males were clearly more competitive than sterile males, exposure to grapefruit oil had no detectable effect on either male type. Exposure to oils had no effect on copulation duration in any of the experiments. We discuss the possibility that the positive effect of grapefruit essential oils on wildish male competitiveness may have been linked to exposure of females to grapefruit as a larval food, which may have imprinted them with grapefruit odors during pupal eclosion and biased their response as adults to odors of their maternal host. © The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  15. Effect of cryopreservation on the pre-hatching behavior in the Mexican fruit fly Anastrepha ludens Loew (Diptera, Tephritidae).

    Science.gov (United States)

    Rajamohan, Arun; Rinehart, Joseph P; Leopold, Roger A

    2018-02-01

    In a sampling of untreated embryos of the economically important fruit pest species, Anastrepha ludens, the cumulative hatch percentage in the lab was noted to be ∼85%. Approximately 70% of the larvae had eclosed through the posterior pole of the egg. This process is effected by the act of Pole Reversal (PR) of the fully developed pre-hatch larva from the wider anterior to the narrower posterior pole of the egg. Investigation of the effects of cryopreservation and various pretreatments prior to cryostorage on the PR behavior was prompted by the observation of significantly lower proportion of cryopreserved embryos exhibiting the PR behavior. Pretreatments (dechorionation and permeabilization) followed by vitrification resulted in delayed hatching, reflecting a slower embryonic development rate of ∼10 h. A smaller proportion of the treated embryos either eclosed from the anterior end of the egg or did not eclose at all despite complete development and prehatch gnawing activity. In the untreated controls, 24.0% of the embryos eclosed from the anterior pole. After permeabilization and cryopreservation, 83% and 55% (adjusted hatch) of the embryos were noted to hatch this way, respectively. An analysis of the hatch count after the treatments shows that factors contributing to the embryos' inability to properly invert polarity is not solely due to cryopreservation but also due to the pretreatment procedures including dechorionation and permeabilization. In fact, the permeabilization pre-treatment contributed the highest to this phenomenon lending support to the view that chemical toxicity rather than physical effects of cryopreservation play a major role in post-cryopreservation effects. Published by Elsevier Inc.

  16. Testosterone as a Bio marker for Rapid Detection of Male Sterility of the Mediterranean Fruit Fly, Ceratitis Capitata (Wied.)

    International Nuclear Information System (INIS)

    Shoman, A.A.; El-Arab, A.E.; Aly, M.S.A.

    2000-01-01

    A rapid biochemical method for the determination of the sterility in males of the fruit fly, Ceratitis Capitata (Wied.) was established utilizing testosterone as a bio marker. Pupae (2 days before emergence) were irradiated at 90 Gy using a 60 Co-gamma-cell, unit. Testosterone level, measured by radioimmunoassay (RIA), in addition to sterility in irradiated male flies were compared to their corresponding values of the untreated control group. The data obtained revealed a highly significant decrease in the testosterone level associated with a highly significant decrease in sterility. The decrease in the hormone level was recognized during the different time intervals (24-120 hours after adult emergence). This bio marker (Testosterone) could be adopted as a rapid monitor for measurements of medfly male sterility before release in the field in a sterile insect technique (SIT) program

  17. Vitality Improvement of the Mediterranean Fruit Fly, Ceratitis capitata Wied 1- Measured by using dehydrogenase Enzyme Activities

    International Nuclear Information System (INIS)

    Salama, M.S.; Shoman, A.A.; Elbermawy, S.M.; Abul Yazid, I.

    2000-01-01

    The present study searches for the improvement vitality of the Mediterranean fruit fly, Ceratitis capitata Wied. Through the induction of a specific variance (mutation) in the genetic material. Several types of treatments that were thought to cause this mutation were used, as IGR's, temperature, formaldehyde, colchicine, alcohols, several types of larval rearing media and gamma-rays. Generally, the activities of the energy enzymes alpha-glycerophosphate dehydrogenase (alpha-GPDH) enzyme lactate dehydrogenase (LDH) enzyme and malate dehydrogenase (MDH) enzyme, when used as a direct measure for the fly vitality, increased due to treatments of the egg stage by the previously mentioned treatments specially by the usage of rice hulls in the larval rearing medium alone or followed by irradiation of the pupal stage with 90 Gy

  18. Studies on the efficiency of some botanic odours as adult attractants for the mediterranean fruit fly, ceratitis capitata wied

    International Nuclear Information System (INIS)

    Shoman, A.A.; Wakid, A.M.; El-Kholy, M.S.; El-Akhdar, E.A.H.; Abdel-Rahman, H.A.

    1998-01-01

    Eight botanic odours were evaluated for their attractability to the mediterranean fruit fly, ceratitis capitata wied. out of these attractants four showed good attractability to males (55-67%). These are orange, bitter orange, mandarin and basil. However, peach, apricot, apple and lemon showed much less attractability to males (16-28%). All of these odours were male-specific and their attractability to females was very limited (1-4%). Population densities outside the trap did not clearly affect attractability except in case of mandarin odour which attracted more flies at high population densities than at lower ones. Sex ratio outside the trap did not significantly affect the odour attractability to flies in all cases

  19. Sexual Competitiveness, Field Survival, and Dispersal of Anastrepha obliqua (Diptera: Tephritidae) Fruit Flies Irradiated at Different Doses.

    Science.gov (United States)

    Gallardo-Ortiz, Uriel; Pérez-Staples, Diana; Liedo, Pablo; Toledo, Jorge

    2018-04-02

    The sterile insect technique (SIT) is used in area-wide pest management programs for establishing low pest prevalence and/or areas free of fruit flies (Diptera: Tephritidae). The aim of this technique is to induce high levels of sterility in the wild population, for this the released insects must have a high sexual competitiveness and field dispersal. However, radiation decreases these biological attributes that do not allow it to compete successfully with wild insects. In this study the sexual competitiveness, field survival and dispersal of Anastrepha obliqua (Macquart; Diptera: Tephritidae) irradiated at 0, 40, 50, 60, 70, and 80 Gy were evaluated in laboratory. A dose of 60 Gy produced 98% sterility, whereas doses of 70 and 80 Gy produced 99% sterility. Sexual competitiveness was assessed in field cages, comparing males irradiated at 0, 50, 60, 70, and 80 Gy against wild males for mating with wild fertile females. Males irradiated at 50 and 60 Gy achieved more matings than those irradiated at 70 and 80 Gy. Wild males were more competitive than mass-reared males, even when these were not irradiated (0 Gy). There was no effect of irradiation on mating latency, yet wild males showed significantly shorter mating latency than mass-reared males. Female remating did not differ among those that mated with wild males and those that mated with males irradiated with different doses. The relative sterility index (RSI) increased from 0.25 at 80 Gy to 0.37 at 60 Gy. The Fried competitiveness index was 0.69 for males irradiated at 70 Gy and 0.57 for those irradiated at 80 Gy, which indicates that a 10 Gy reduction in the irradiation dose produces greater induction of sterility in the wild population. There were no significant differences in field survival and dispersal between flies irradiated at 70 or 80 Gy. Reducing the irradiation dose to 60 or 70 Gy could improve the performance of sterile males and the effectiveness of the SIT. Our results also distinguish between the

  20. Capture of Anastrepha sororcula (Diptera: Tephritidae in McPhail and Jackson traps with food attractant and virgin adults

    Directory of Open Access Journals (Sweden)

    Christiane dos Santos Felix

    2009-02-01

    Full Text Available This stady evaluated the capture of A. sororcula in the traps baited with the conspecific virgin adults and food attractant in two orchards. The first was the orchard of the Universidade Federal da Grande Dourados (OUFGD and the second, the orchard of the Sindicato Rural de Dourados (OSRD. The capture of A. sororcula in McPhail and Jackson traps was carried out using the corn hydrolysed protein (CHP, control (no flies, virgin males (5, 10 and 15, five virgin females and five virgin couples. The average number of the flies caught in the traps with the corn hydrolysed protein was signifícantly higher than all the other treatments. There was no significant capture of A. sororcula females in the traps baited with the conspecific virgin males, females or the couples.As moscas-das-frutas constituem um grupo de pragas responsáveis por grandes prejuízos econômicos à fruticultura mundial. Anastrepha sororcula Zucchi, é a principal espécie de tefritídeo que ataca a goiaba em Mato Grosso do Sul. O objetivo desta pesquisa foi avaliar a captura de adultos de A. sororcula em armadilhas com atrativo alimentar e adultos virgens, em dois ambientes. Os bioensaios iniciaram-se com a criação de A. sororcula no Laboratório de Insetos Frugívoros da Universidade Federal da Grande Dourados (UFGD. As pesquisas de campo foram desenvolvidas nos pomares da UFGD e do Sindicato Rural de Dourados (SRD-MS. A captura de adultos de A. sororcula em armadilhas McPhail e Jackson foi avaliada para os tratamentos: proteína hidrolisada de milho, testemunha (sem moscas, machos virgens (5, 10 e 15, 5 fêmeas virgens e 5 casais. O número médio de indivíduos capturados nas armadilhas com proteína foi significativamente maior que nos demais tratamentos. O número médio de adultos de A. sororcula, capturado com o tratamento proteína no SRD foi significativamente superior ao do pomar da UFGD. Não ocorreu captura significativa de fêmeas de A. sororcula nas armadilhas com

  1. Himenópteros parasitóides de larvas de Anastrepha spp. em frutos de carambola (Averrhoa carambola L. na região de Divinópolis, Minas Gerais, Brasil Himenopterous parasitoids of Anastrepha spp. larvae, in star fruit (Averrhoa carambola L. In divinópolis region, Minas Gerais, Brasil

    Directory of Open Access Journals (Sweden)

    Cláudio Gonçalves Silva

    2003-12-01

    Full Text Available Este trabalho foi conduzido com o objetivo de conhecer os parasitóides de moscas-da-fruta na região de Divinópolis-MG. As pupas foram obtidas pelo método de flutuação, sendo individualizadas em cápsulas de gelatina até a emergência das moscas adultas ou de seus parasitóides. A prevalência total de parasitismo foi de 14,8%. Trichopria anastrepha foi a espécie mais comum, com 44,5%.The objective of this work was to identify the parasitoids of fruit flies in Divinópolis-MG region. The pupae were obtained by the flotation method. They were individually placed in gelatin capsules until the emergency of the adult flies or their parasitoids. The overall prevalence of parasitism was 14,8%. Trichopria anastrepha was the most common specie with a frequency of 44,5%.

  2. The dynamics of intraguild predation in Chrysomya albiceps Wied. (Diptera: Calliphoridae): interactions between instars and species under different abundances of food

    OpenAIRE

    Rosa, Gisele S.; Carvalho, Lidia R. de; Reis, Sergio F. dos; Godoy, Wesley A.C.

    2006-01-01

    The pattern of larval interaction in blowflies confined with Chrysomya albiceps Wied. and C. rufifacies Maquart can be changed in response to the predatory behaviour of the two species to a contest-type process instead of the scramble competition that usually occurs in blowflies. Facultative predation is a frequent behaviour in C. albiceps and C. rufifacies that occurs as an alternative food source during the larval stage. In this study, we investigated the dynamics of intraguild predation by...

  3. The dynamics of intraguild predation in Chrysomya albiceps Wied. (Diptera : Calliphoridae): Interactions between instars and species under different abundances of food

    OpenAIRE

    Rosa, Gisele S.; de Carvalho, Lidia R.; dos Reis, Sergio F.; Godoy, Wesley A. C.

    2006-01-01

    The pattern of larval interaction in blowflies confined with Chrysomya albiceps Wied. and C. rufifacies Maquart can be changed in response to the predatory behaviour of the two species to a contest-type process instead of the scramble competition that usually occurs in blowflies. Facultative predation is a frequent behaviour in C. albiceps and C. rufifacies that occurs as an alternative food source during the larval stage. In this study, we investigated the dynamics of intraguild predation by...

  4. Trennung der Eltern: Wie wird sie den Kindern vermittelt und welchen Einfluss haben Art und Inhalt der Mitteilung auf das Trennungserleben der Kinder?

    OpenAIRE

    Weber, Annhild; Karle, Michael; Klosinski, Gunther

    2004-01-01

    Anhand von 45 Sorgerechtsgutachten über 89 Kinder aus den Jahren 1996-1999 und 62 schriftlich beantworteten Katamnesebögen der entsprechenden Eltern wurde untersucht, wie die Eltern den Kindern von ihrer bevorstehenden Trennung berichteten und ob Art und Inhalt dieser Mitteilung Auswirkungen auf die Trennungsbewältigung der betroffenen Kinder hatten. Hierzu wurde ein Fragebogen zur Gutachtenauswertung und zur Katamnesenerhebung erstellt. Es zeigte sich, dass nur in 48,9 % der Famil...

  5. Wie können Corporate Citizens voneinander lernen? : Ordonomische Anregungen für inter-organisationales Lernen im Global Compact der Vereinten Nationen

    OpenAIRE

    Hielscher, Stefan; Pies, Ingo; Beckmann, Markus

    2009-01-01

    "Der Global Compact der Vereinten Nationen versteht sich nicht als Regulierungsinitiative, sondern als freiwilliges Lern- und Dialogforum für Corporate Citizenship. Dieser Beitrag entwickelt Vorschläge, wie der Global Compact diesem Anspruch (noch besser) gerecht werden kann. Hier geht es um Strukturen in zweifacher Hinsicht: (a) Zum einen können Corporate Citizens besonders gut dann voneinander lernen, wenn sie sich über die strukturellen Bedingungen erfolgreicher - aber auch: fehlgeschlagen...

  6. Genetics of the Mediterranean fruit fly, Ceratitis capitata (Wied.), as a tool in the sterile insect technique

    International Nuclear Information System (INIS)

    Roessler, Y.; Rosenthal, H.

    1990-01-01

    The report covers a period of five years of studies on the genetics of the Mediterranean fruit fly (medfly), Ceratitis capitata (Wied.), and genetic sexing. Fourteen morphological mutants were isolated during that period, including gr, ru, ro Sr, Sp, ew, br, sb and six yet unstudied mutants. Additional data were accumulated on genetic recombination between the various marked loci in males and females, and genetic maps were constructed. Recombination in males were found to be rather common in the medfly and not associated with the presence of chromosomal aberrations or with a particular chromosome. It seemed, however, that the dominant mutants that have been studied had a higher frequency of recombination in males, which almost matched the recombination levels encountered in the females. Initial steps towards the construction of genetic sexing strains were conducted. Selection for resistance to certain chemicals (potassium sorbate, Avermectin and Cyromazine) was carried out with limited success. Lines with high immunity to the three chemicals were established, and the mode of inheritance to Cyromazine and potassium sorbate was studied. Indications were that Cyromazine resistance was recessive and governed by a single gene whereas potassium sorbate resistance seemed to be a quantitative trait. (author). 14 refs, 8 tabs

  7. Rice hulls a new bulking component for larval rearing of the mediterranean fruit fly, ceratitis capitata wied

    International Nuclear Information System (INIS)

    Wakid, A.M.; El-Kholy, E.M.S.; Shoman, A.A.; El-Akhdar, E.A.H.; Abdel Rahman, H.A.

    1998-01-01

    Rice hulls as a new bulking component for the larval rearing of the mediterranean fruit fly, ceratitis capitata wied. Was tested in the laboratory; and 4 formulas of rice hulls and wheat bran were evaluated biologically and financially. When rice hulls and wheat bran were mixed in the ratio of 3:1, all biological aspects and response to gamma radiation (90 Gy) of the produced adults were normal except for male fertility that decreased by about 13% of that of the bran medium (control); while male mating competitiveness was increased. When rice hulls were used without bran, only adult emergece and female fecundity were decreased by about 2% and 20%, respectively as compared to control medium (totally wheat bran); while larval duration increased by one day. The fourth formula consisting of wheat bran and rice hulls in the ratio of 1:1 showed the least favourite bulking component. Calculations showed that one million pupal production costed $26.6,22.2, 20.2 and 21.4 for the bulking ratios (hulls : bran) 0.1, 1:1, 3:1 and 1:0,respectively

  8. Effects of conditioning with variations of temperatures on the susceptibility of the medfly, Ceratitis capitata (Wied.) to gamma radiation

    International Nuclear Information System (INIS)

    Hussin, E.K.; Abdel-Megeed, M.I.; Wakid, A.M.; Fadel, A.M.

    2010-01-01

    An attempt was carried out to investigate the effect of gamma irradiation on sterility and male mating competitiveness of the medfly C. capitata (Wied.) under hypo and hyperthermia in order to minimize the deleterious effects of radiation on insects. Low, moderate and high temperature (5, 25 and 32 degree C) were applied to pupal and adult stages of C. capitata at different ages before and/or after irradiation with the doses (70, 90 and 110 Gy) of gamma radiation. Sterility of pupae or adults exposed to low temperature (5 degree C) before or after irradiation was increased compared with their controls. The rate of increase was more clear in pupae exposed after irradiation and in adults exposed before irradiation. When pupae or adults were treated with high temperature (32 degree C) for 24 h before or after irradiation, adult sterility was increased with increasing the radiation dose. The competitiveness values were greatly higher when pupae or adults were exposed to low temperature (5 degree C) than those exposed to moderate or high temperature before irradiation.

  9. Dimensões, massa e volume do baço em tartarugas (Trachemys scrypta elegans, Wied,1839

    Directory of Open Access Journals (Sweden)

    Marcelo Domingues de Faria

    2008-12-01

    Full Text Available O objetivo deste estudo foi verificar as dimensões, massa e volume do baço em tartarugas (Trachemys scripta elegans WIED, 1839 estabelecendo correlação com as dimensões, massa e volume corporais. Para a confecção deste trabalho, utilizou-se vinte animais, provenientes do Instituto de Psicologia da Universidade de São Paulo, coletados após a eutanásia que, levados ao Laboratório de Anatomia da Faculdade de Medicina Veterinária e Zootecnia da mesma universidade, tiveram suas dimensões, massa e volume corporais aferidos. Então, retirou-se o plastrão, expondo sua cavidade celomática, removendo o baço para realizar as mensurações. Apesar dos animais terem sido criados num mesmo ambiente, sob as mesmas condições ambientais e abatidos no mesmo período do ano, concluiu-se que não há correlação entre as dimensões do baço e as dimensões corporais, onde, animais menores podem apresentar o baço com maiores proporções do que tartarugas maiores, variando conforme as condições individuais - fato que ocorre com as demais espécies animais.

  10. The effect of gamma irradiation on the nucleic acids content of the mediterranean fruit fly ceratitis capitata (Wied)

    International Nuclear Information System (INIS)

    Fadel, A.M.; Amin, T.R.; Al-Elimi, M.H.

    1999-01-01

    This work was carried out study the effect of gamma irradiation on the deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) content in the whole body homogenate of the mediterranean fruit fly, ceratitis capitata (Wied.) pupae were gamma irradiated with different doses (o, 50, 70, 90 and 110 Gy) at two different pupal ages (2 and 4 days before adult emergence ) to estimate the nucleic acids in pupae and adult males, and females. Experimental results showed that gamma irradiation of pupae reduced RNA content, and this reduction was proportional with the applied dose and more pronounced in the younger pupae. However, DNA content was reduced only when the highest dose was applied to pupae irradiated 2 days before adult emergence (older pupae). Concerning adult insects which were gamma irradiated as pupae, the results revealed, generally, that males and females which were irradiated 2 days before adult emergence were more affected than those irradiated 4 days before adult emergence. The male DNA content and the female RNA content showed high degrees of reduction which, more or less, increased with increasing the dose used. On the other hand, female DNA and male RNA contents were slightly, changed. The significant importance of the results and some statistical interrelations were discussed

  11. Evaluating mating compatibility within fruit fly cryptic species complexes and the potential role of sex pheromones in pre-mating isolation

    Czech Academy of Sciences Publication Activity Database

    Juárez, M. L.; Devescovi, F.; Břízová, Radka; Bachmann, G.; Segura, D. F.; Kalinová, Blanka; Fernández, P.; Ruiz, M. J.; Yang, J.; Teal, P. E. A.; Cáceres, C.; Vreysen, M. J. B.; Hendrichs, J.; Vera, M. T.

    -, č. 540 (2015), s. 125-155 ISSN 1313-2989 R&D Projects: GA MŠk 7AMB13AR018 Institutional support: RVO:61388963 Keywords : species delimitation * field cages * Tephritidae * Anastrepha fraterculus * Bactrocera dorsalis Subject RIV: EG - Zoology Impact factor: 0.938, year: 2015 http://zookeys.pensoft.net/articles.php?id=6133

  12. Effects of gamma radiation on the sterility and behavioral quality of the caribbean fruit fly, Anastrepha suspensa (Loew (Diptera:Tephritidae Efeitos da radiação gama na esterilização e comportamento da mosca-do-caribe, Anastrepha suspensa (Low (Diptera:Tephritidae

    Directory of Open Access Journals (Sweden)

    J.M.M. Walder

    1993-09-01

    Full Text Available Pupae of Anastrepha suspensa (Loew were irradiated 2 days before adult eclosión in an air atmosphere with 15, 20, 25, 30, 50 and 70 Gy of gamma radiation (Co-60. The radiation effects on sterility and other parameters of quality and behavior of males and females of caribfly were established. Males became fully sterile with a dose of 50 Gy and females laid no eggs when exposed to 25 Gy. Radiation had no significant effect on adult eclosion, sex ratio, flight ability and irritability, but female mortality was affected significantly by radiation, showing higher survival rates in low dosage treatments. The mating behavior of the males was reduced significantly by increasing the radiation doses.Pupas de Anastrepha suspensa (Loew foram irradiadas dois dias antes da emergência dos adultos em atmosfera de ar com as doses de 15, 20, 25, 30, 50 e 70 Gy de radiação gama (Co-60. Foram avaliados os efeitos da radiação sobre a esterilidade e outros parâmetros de qualidade e comportamento de machos e fêmeas de mosca-do-caribe. Machos tornaram-se totalmente estéreis com uma dose de 50 Gy e as fêmeas não ovipositaram quando expostas a 25 Gy. A radiação não teve efeito significativo sobre a taxa de emergência de adultos, na razão sexual, na habilidade de vôo e na irritabilidade desses insetos. Somente a mortalidade das fêmeas foi afetada significativamente pela radiação, causando unia maior sobrevivência nas dosagens mais baixas. A atividade de acasalamento dos machos foi reduzida significativamente com o incremento da dosagem de radiação.

  13. New jobs in the field of photovoltaic energy conversion. 2001: A boom like none before; Photovoltalik schafft Arbeitsplaetze. 2001 brachte Boom wie noch nie

    Energy Technology Data Exchange (ETDEWEB)

    Lemme, H.

    2002-09-17

    In 2001, the demand for solar power systems nearly doubled, and there is continued interest in 2002 although a growth rate like this cannot be continued infinitely. The future of the industry will depend on the decisions of the new German government. [German] Die Nachfrage nach Solarstromanlagen hat sich im letzten Jahr in Deutschland fast verdoppelt. Zwar setzt sich diese Zuwachsrate nicht mehr genauso fort, doch insgesamt bleibt das Interesse an dieser erneuerbaren Energie hoch. Wie sich die Branche langfristig weiterentwickelt, haengt nun entscheidend von der Foerderpolitik der naechsten Regierung ab. (orig.)

  14. The presence of the sexual partner and nutritional condition alter the Anastrepha obliqua MacQuart (Diptera: Tephritidae) protein discrimination threshold

    Energy Technology Data Exchange (ETDEWEB)

    Cresoni-Pereira, Carla; Zucoloto, Fernando S. [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Filosofia, Ciencias e Letras. Dept. de Biologia

    2005-11-15

    The minimum protein amount that Anastrepha obliqua MacQuart can detect in its alimentary source is variable, though the causes of such variation are not very well known. In this study, the authors tested whether the sexual partners nutritional condition and presence devoid of direct contact alter the A. obliqua protein discrimination threshold. Male and female insects were assigned to groups as follows: (1) newly emerged, (2) deprived of protein source (yeast) during 18 days, (3) non-yeast-deprived during 18 days, (4) yeast-deprived in the presence of equally yeast-deprived sexual partners, (5) yeast-deprived in the presence of non-yeast-deprived partners, (6) non-yeast-deprived with yeast-deprived partners and (7) non-yeast-deprived with non-yeast-deprived partners. The sexual partners were maintained apart by a transparent plastic screen with small holes. Not only the males presence but also their nutritional condition have altered the females discrimination threshold, particularly when the females were deprived and when non- deprived females cohabited with deprived males. Therefore, the females threshold was determined by their own nutritional condition in addition to recognition of the males nutritional condition. The males discrimination threshold was higher for non-deprived subjects than for the deprived ones. The occurrence of responses in the absence of direct contact between males and females has shown that they may use a chemical mechanism for mutual recognition of the sexual partner nutritional condition. (author)

  15. CONTROL DE Anastrepha serpentina (Wiedemann Y CALIDAD DE LOS FRUTOS DE ZAPOTE MAMEY Pouteria sapota (Jacq Moore & Stearn TRATADOS CON AIRE CALIENTE FORZADO

    Directory of Open Access Journals (Sweden)

    R. Ariza-Flores

    2009-01-01

    Full Text Available Los objetivos de este estudio fue evaluar la efectividad de tratamientos térmicos con aire caliente forzado húmedo en el combate de la mosca de los zapotes (Anastrepha serpentina Wiedemann "in vivo" y determinar la tolerancia a las condiciones aplicadas de frutos de zapote mamey. Los frutos no fueron dañados internamente por el tratamiento térmico cuando fueron expuestos a 43 °C·120 min-1. Los frutos alcanzaron su madurez de consumo a los ocho días a 25 °C, presentaron cambios rápidamente en color y perdieron más peso; mientras que, a 10 °C se mantuvieron con mayor firmeza, prolongaron su vida de anaquel y mostraron mayores daños en los haces vasculares. Con respecto a la mortandad de los huevos y larvas de mosca de la fruta A. serpentina, éstas fueron del 100 % con la atmósfera controlada (CA de aire caliente a 43 °C·120 min-1, igualmente los frutos no fueron dañados por la aplicación de la CA; las larvas murieron fácilmente por el calor a 40 °C·120 min-1, mientras que los huevos fueron más resistentes ya que ocurrieron larvas emergidas a 25 °C para los ocho días de almacenados.

  16. Influence of Pupation Substrate on Mass Production and Fitness of Adult Anastrepha obliqua Macquart (Diptera: Tephritidae) for Sterile Insect Technique Application.

    Science.gov (United States)

    Aceituno-Medina, Marysol; Rivera-Ciprian, José Pedro; Hernández, Emilio

    2017-12-05

    Tephritid mass-rearing systems require an artificial substrate for pupation. Pupation substrate characteristics influence the quality of insects produced. Coconut fiber, as an alternative to the conventional pupation substrate vermiculite, was evaluated for Anastrepha obliqua Macquart (Diptera: Tephritidae) pupation behavior (pupation patterns, distribution, respiration rate, and pupal weight) and adult fitness (adult eclosion time, flight ability, and male mating competitiveness). Pupation percentage at 24 h, pupal weight, and flight ability were not significantly affected by substrate type. Adult eclosion levels of 50% were reached at 29.7 and 41.6 h for coconut fiber and vermiculite, respectively. Pupae distribution patterns differed between substrates because the larval aggregation level was reduced during the pupation process in coconut fiber. The pupae aggregation was three times greater in vermiculite than in coconut fiber. A higher respiratory rate in the last days of pupation and adult eclosion were recorded in the insects maintained in coconut fiber. Coconut fiber suitability as a pupation substrate for quality mass production of pupae and its implications for sterile insect technique are discussed. © The Author(s) 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  17. The presence of the sexual partner and nutritional condition alter the Anastrepha obliqua MacQuart (Diptera: Tephritidae) protein discrimination threshold

    International Nuclear Information System (INIS)

    Cresoni-Pereira, Carla; Zucoloto, Fernando S.

    2005-01-01

    The minimum protein amount that Anastrepha obliqua MacQuart can detect in its alimentary source is variable, though the causes of such variation are not very well known. In this study, the authors tested whether the sexual partners nutritional condition and presence devoid of direct contact alter the A. obliqua protein discrimination threshold. Male and female insects were assigned to groups as follows: (1) newly emerged, (2) deprived of protein source (yeast) during 18 days, (3) non-yeast-deprived during 18 days, (4) yeast-deprived in the presence of equally yeast-deprived sexual partners, (5) yeast-deprived in the presence of non-yeast-deprived partners, (6) non-yeast-deprived with yeast-deprived partners and (7) non-yeast-deprived with non-yeast-deprived partners. The sexual partners were maintained apart by a transparent plastic screen with small holes. Not only the males presence but also their nutritional condition have altered the females discrimination threshold, particularly when the females were deprived and when non- deprived females cohabited with deprived males. Therefore, the females threshold was determined by their own nutritional condition in addition to recognition of the males nutritional condition. The males discrimination threshold was higher for non-deprived subjects than for the deprived ones. The occurrence of responses in the absence of direct contact between males and females has shown that they may use a chemical mechanism for mutual recognition of the sexual partner nutritional condition. (author)

  18. Comparison of Anastrepha ludens (Diptera: Tephritidae) Bisexual and Genetic Sexing (Tapachula-7) Strains: Effect of Hypoxia, Fly Density, Chilling Period, and Food Type on Fly Quality.

    Science.gov (United States)

    Arredondo, José; Ruiz, Lía; Hernández, Emilio; Montoya, Pablo; Díaz-Fleischer, Francisco

    2016-04-01

    The use of genetic sexing strain (GSS) insects in the sterile insect technique (SIT) makes necessary the revision of quality parameters of some stressful steps used during the packing process for aerial release because of possible differences in tolerance between fly strains. Here, we determined the effect of three periods of hypoxia (12, 24, and 36 h at pupal stage), three cage densities (1.0, 1.3, and 1.5 flies/cm2), two different foods (protein/sugar (1/24) and Mubarqui), and three chilling times (20 min [control], 90, and 180 min) on the quality parameters of flies of two Anastrepha ludens (Loew) strains (bisexual and GSS Tapachula-7). In general, the response to stressful conditions of both fly strains was qualitatively equivalent but quantitatively different, as flies of both strains responded equally to the stressful factors; however, flies of Tapachula-7 exhibited lower quality parameters than the control flies. Thus, hypoxia affected the flying ability but not the emergence or longevity of flies. The food type affected the adult weight; protein/sugar produced heavier flies that also survived longer and had a greater mating propensity. Flies under the lowest density were better fliers that those at the other two densities. Increasing chilling time reduced flight ability but not longevity or mating propensity. The implications of these findings for the use of A. ludens GSS in SIT programs are discussed herein.

  19. Short-term anoxic conditioning hormesis boosts antioxidant defenses, lowers oxidative damage following irradiation and enhances male sexual performance in the Caribbean fruit fly, Anastrepha suspensa

    Energy Technology Data Exchange (ETDEWEB)

    Lopez-Martinez, Giancarlo; Hahn, Daniel A [Department of Entomology and Nematology, University of Florida, Gainesville, FL (United States)

    2013-01-15

    Most organisms are repeatedly exposed to oxidative stress from multiple sources throughout their lifetimes, potentially affecting all aspects of organismal performance. Here we test whether exposure to a conditioning bout of anoxia early in adulthood induces a hormetic response that confers resistance to oxidative stress and enhances male sexual performance later in life in the Caribbean fruit fly, Anastrepha suspensa. Anoxic conditioning of adults prior to emergence led to an increase in antioxidant capacity driven by mitochondrial superoxide dismutase and glutathione peroxidase. When exposed to gamma irradiation, a strong oxidative stressor, males that received anoxic conditioning had lower lipid and protein oxidative damage at sexual maturity. Anoxia conditioning led to greater male sexual competitiveness compared with unconditioned males when both were irradiated, although there was no effect of anoxia conditioning on mating competitiveness in unirradiated males. Anoxia also led to higher adult emergence rates and greater flight ability in irradiation-stressed flies while preserving steriity. Thus, hormetic treatments that increased antioxidant enzyme activity also improved male performance after irradiation, suggesting that antioxidant enzymes play an important role in mediating the relationship between oxidative stress and sexual selection. Furthermore, our work has important applied implications for the sterile insect technique (SIT), an environmentally friendly method of insect pest control where males are sterilized by irradiation and deployed in the field to disrupt pest populations via mating. We suggest that hormetic treatments specifically designed to enhance antioxidant activity may produce more sexually competitive sterile males, thus improving the efficacy and economy of SIT programs. (author)

  20. Mixture-amount design and response surface modeling to assess the effects of flavonoids and phenolic acids on developmental performance of Anastrepha ludens.

    Science.gov (United States)

    Pascacio-Villafán, Carlos; Lapointe, Stephen; Williams, Trevor; Sivinski, John; Niedz, Randall; Aluja, Martín

    2014-03-01

    Host plant resistance to insect attack and expansion of insect pests to novel hosts may to be modulated by phenolic compounds in host plants. Many studies have evaluated the role of phenolics in host plant resistance and the effect of phenolics on herbivore performance, but few studies have tested the joint effect of several compounds. Here, we used mixture-amount experimental design and response surface modeling to study the effects of a variety of phenolic compounds on the development and survival of Mexican fruit fly (Anastrepha ludens [Loew]), a notorious polyphagous pest of fruit crops that is likely to expand its distribution range under climate change scenarios. (+)- Catechin, phloridzin, rutin, chlorogenic acid, and p-coumaric acid were added individually or in mixtures at different concentrations to a laboratory diet used to rear individuals of A. ludens. No effect was observed with any mixture or concentration on percent pupation, pupal weight, adult emergence, or survival from neonate larvae to adults. Larval weight, larval and pupal developmental time, and the prevalence of adult deformities were affected by particular mixtures and concentrations of the compounds tested. We suggest that some combinations/concentrations of phenolic compounds could contribute to the management of A. ludens. We also highlight the importance of testing mixtures of plant secondary compounds when exploring their effects upon insect herbivore performance, and we show that mixture-amount design is a useful tool for this type of experiments.

  1. Wie viel muss ich wissen, um global handeln zu können? Verantwortung für Weltarmut und das Problem der epistemischen Überforderung

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    Weber-Guskar Eva

    2015-12-01

    Full Text Available Was heißt es, sich in unserer globalisierten Welt als eine vollverantwortliche Person zu verstehen und zu verhalten? Einerseits scheint es richtig, dass wir global verantwortlich sind, d.h. dass wir auch gegen entferntes Leid etwas tun sollten; andererseits aber ist wegen vielfacher Überforderungsproblemen unklar ist, wie man diese Verantwortung tatsächlich übernehmen können soll – was wiederum dagegen spricht, dass wir diese Verantwortung berechtigtermaßen zuschreiben können. Um einen Aspekt dieses großen Themas zu behandeln, konzentriere ich mich in diesem Aufsatz auf den Anwendungsbereich von extremer Armut und argumentiere in folgenden Schritten. Zuerst spitze ich das Thema zu auf ein Problem, das Samuel Scheffler in diesem Zusammenhang konstatiert hat, nämlich einen Widerstreit zwischen dem, was Verantwortung unter den Bedingungen der Globalisierung bedeutet und dem, wie wir uns grundsätzlich als Handelnde zu verstehen gewohnt sind. Dann zeige ich erstens, dass dem Thema einer epistemischen Überforderung dabei entscheidendes Gewicht zugesprochen wird, zweitens jedoch, dass sich, genauer besehen, dieses Problem gar nicht in dieser Art stellt. Dafür schlage ich eine Analyse des Verantwortungsbegriffs vor, die es ermöglicht, Kriterien zu identifizieren, anhand derer gewisse Grenzen gezogen werden können, so dass die Zuschreibung der Verantwortung gerechtfertigt werden kann.

  2. Acoustic courtship songs in males of the fruit fly Anastrepha ludens (Diptera: Tephritidae associated with geography, mass rearing and courtship success

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    R.D Briceño

    2009-11-01

    Full Text Available The Sterile Insect Technique (SIT has been used successfully to control or eradicate fruit flies. The commonly observed inferiority of mass-reared males, compared with wild males, when they are paired with wild females, is apparently due to their inadequate courtship. Anastrepha ludens males produce two types of wing vibration during courtship and mating, the "calling sound" and the "premating or precopulatory sound". There were clear differences in the calling songs between successful and unsuccessful courtships in sterile (irradiated and fertile Mexican flies. Among sterile flies, successful males produce longer buzzes, shorter interpulses and a higher power spectrum in the signal. Fertile flies showed the same trend. For mating songs a significant difference occurred in two parameters: power spectrum between sterile and fertile flies with respect to the type of song, and the signal duration and intensity were greater in non-irradiated flies. Calling songs of wild flies compared with laboratory grown flies from Mexico had shorter interpulses, longer pulses, and a greater power spectrum. However, in the case of premating songs, the only difference was in the intensity, which was significantly greater in wild males. An unexpected result was not observing pulses during pheromone deposition in wild males from Costa Rica. Comparing the premating songs of wild flies from Costa Rica and Mexico, no significant differences were observed in the duration, and the intensity of the signal was slightly greater in flies from Mexico. Rev. Biol. Trop. 57 (Suppl. 1: 257-265. Epub 2009 November 30.La técnica estéril del insecto (SIT se ha utilizado con éxito para controlar o para suprimir las moscas de fruta y su impacto en los cultivos. La inferioridad comúnmente observada de machos criados masivamente, comparada con los machos silvestres, cuando se aparean con las hembras silvestres es al parecer debido a su inadecuado cortejo. Los machos de Anastrepha

  3. Identificación y localización geográfica de especies del género Anastrepha Schiner (Diptera: Tephritidae en Cundinamarca (Colombia

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    Martínez Javier Orlando

    2005-06-01

    Full Text Available

    Este artículo inicia con una introducción sobre la morfología y la taxonomía del género Anas­trepha, para apoyar el reconocimiento taxonómico de los grupos de especies y las especies de este género en Cundinamarca. A tal fin se examinaron nueve co­lecciones en distintas instituciones universitarias y de investigación en este departamento. Para identificar el material depositado en las colecciones se procedió de la siguiente manera con los especímenes: se extra­jeron y prepararon los genitales para microscopía; se tomaron medidas micrométricas de los ovipositores; se compararon por claves taxonómicas; se compara­ron con material de referencia del museo entomoló­gico UNAB y se sistematizaron los respectivos datos de colección. Como resultados se reconocieron 14 especies contenidas en seis grupos de especies y una especie de ubicación incierta: 1 grupo mucronota: A. mucronota Stone, A. nunezae Steyskal; 2 grupo grandis: A. grandis (Macquart; 3 grupo spatulata: A. manihoti Lima; 4 grupo pseudoparallela: A. limae Stone, A. palli­dipennis Greene; 5 grupo serpentina: A. ornata Aldrich, A. serpentina (Wiedemann, A. striata Schiner; 6 grupo fraterculus: A. bahiensis Lima, A. distincta Greene, A. fra­terculus (Wiedemann, A. obliqua (Macquart; Incertae sedis: A. rheediae Stone. Asimismo, en este estudio se recopilaron datos de localización geográfica del gé­nero para 22 municipios; también se reportan por primera vez para Cundinamarca A. grandis, A. mani­hoti, A. mucronota, A. limae, A. ornata y A. serpentina.

  4. Desinfestação de Averrhoa carambola infestada por Anastrepha obliqua (Macquart, 1835 (diptera -Tephritidae através de radiação gama Desinfestation of Averrhoa carambola infested with Anastrepha obliqua (mac. 1835 (diptera - Tephritidae using gamma radiation

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    V. Arthur

    1994-08-01

    Full Text Available O experimento teve por objetivo determinar a dose de desinfestação para Averrhoa carambola infestada por larvas de Anastrepha obliqua. Para realização do experimento coletou-se frutos do campo e fez-se urna amostragem prévia, constatando-se que cada fruta continha em média 11 larvas de último instar do referido inseto praga. Esses frutos foram irradiados com as seguintes doses de radiação gama: 0 (test., 50, 150, 300, 600 e 900 Gy. Cada tratamento constou de 3 repetições num total de 9 frutas e aproximadamente 99 larvas por tratamento. Após a irradiação as frutas foram colocadas em câmara climatizada com 25 ± 5°C de temperatura e umidade relativa de 70 ± 5% onde aguardou-se que as larvas deixassem os frutos e se transformassem em pupas e posteriormente em adultos. Pelos resultados obtidos concluiu-se que a dose letal para (LD100 para larvas em frutos de carambola foi 600 Gy e a que impediu a emergência dos adultos foi a de 50 Gy.The aim of this experiment was to determine the desinfestation dose of gamma radiation in Averrhoa carambola infested with larvae of Anastrepha obliqua. Fruits were collected in the field, each having about 11 larvae in the last instar. Fruits were irradiated with the following gamma radiation doses: 0 (control, 50, 150, 300, 600 and 900 Gy. Each treatment consisted of 9 fruits (3 replications giving the amount of 99 larvae for each treatment. After irradiation the fruits were kept in a climatic chamber with the temperature adjusted to 25 ± 5°C and relative humidity of 70 ± 5%, until larvae left the fruit and became transformed into pupae and adults. The lethal dose (LD100 of gamma radiation for larvae in the fruits was 600 Gy and the dose of 50 Gy inhibited completely the total emergency of adults.

  5. Sexual competitiveness and compatibility between mass-reared sterile flies and wild populations of Anastrepha Ludens (Diptera: Tephritidae) from different regions in Mexico

    International Nuclear Information System (INIS)

    Orozco-Davila, D.; Hernandez, R.; Meza, S.; Dominguez, J.

    2007-01-01

    The mass-reared colony of Anastrepha ludens (Loew) currently used in Mexico for suppression of the Mexican fruit fly has been in use for over 10 years. Sterile flies are released into a wide range of environmental conditions as part of an integrated area-wide approach to suppress diverse populations of this pest in the Mexican Republic. This paper assesses the performance of the sterile flies interacting with wild populations from the different environments. We investigated the sexual compatibility and competitiveness of the sterile flies when competing with wild populations from 6 representatives Mexican states: Nuevo Leon, Tamaulipas, Sinaloa, Nayarit, Michoacan, and Chiapas. Results show that the males of the wild populations differed in the time to the onset and peak of sexual activity. Nevertheless, the index of sexual isolation (ISI) reflected sexual compatibility between the populations and the mass-reared strain, indicating that the sterile individuals mate satisfactorily with the wild populations from the 6 states. The male relative performance index (MRPI) showed that the sterile male is as effective in copulating as the wild males. The female relative performance index (FRPI) reflected a general tendency for wild females to copulate in greater proportion than the sterile females, except for the strains from Tamaulipas and Chiapas. In general, the lower participation of the sterile females in copulation increases the possibilities of sterile males to mate with wild females. The relative sterility index (RSI) showed that the acceptance by wild females of the sterile males (25-55%) was similar to that of wild males. Females of the Chiapas strain showed the lowest acceptance of sterile males. Finally, the results obtained in the Fried test (which measures induced sterility in eggs) showed a competitiveness coefficient ranging from 0.2 to 0.5. This suggests that sterile males successfully compete and are compatible with flies from different geographic origins

  6. Packing and Postirradiation Handling of the Anastrepha ludens (Diptera: Tephritidae) Tapachula-7 Genetic Sexing Strain: Combined Effects of Hypoxia, Pupal Size, and Temperature on Adult Quality.

    Science.gov (United States)

    Arredondo, José; Ruiz, Lia; Montoya, Pablo; Díaz-Fleischer, Francisco

    2018-04-02

    The production of genetic sexing strains (GSS) of tephritid flies for sterile insect technique (SIT) programs convey the need to determine new conditions for packing and shipment since these flies are more susceptible to stressors than standard bisexual strains. We studied the effect of hypoxia, pupae size, and temperature on the new GSS Tapachula-7 of Anastrepha ludens flies (Diptera: Tephritidae). In one experiment, we tested the interaction size hypoxia using three pupae sizes, 6 (11.6 ± 1.1 mg), 7 (15.3 ± 1.5 mg), and 8 (17.9 ± 1.3 mg) (95% of produced pupae exhibit these categories of size), and four hypoxia periods, 12, 24, 36, 48 h and a control. In a second experiment, we tested two periods of hypoxia (24 and 48 h) and four temperatures: 15, 20, 25, and 30°C and a control (without hypoxia at laboratory temperature). Our results showed that the emergence and percent of fliers from the pupae exposed to hypoxia were adversely affected; however, emergence was higher in pupae of size 7. Treatment for 12 and 24 h hypoxia led to a higher number of fliers. In the case of the interaction of hypoxia and temperature, it was observed that those flies that emerged from the pupae exposed to hypoxia at 15 and 20°C exhibited quality control parameters similar to those that were not exposed to hypoxia. We discuss our results on the basis of the metabolic response to these factors and its application in the SIT programs.

  7. Microscopical studies on the effects of gamma radiation and/or pyriproxyfen (IGR) on the testis and ovary of the mediterranean fruit fly, ceratitis capitata (wied.)

    International Nuclear Information System (INIS)

    El-Kholy, E.M.S.; Fadel, A.M.; Shoman, A.A.

    2003-01-01

    Larval artificial diet of the mediterranean fruit fly, ceratitis capitata (wied.) was treated with the Lc50 of the juvenile hormone, pyriproxyfen. The produced full grown pupae were gamma irradiated at doses of 50, 70, 90 and 110 Gy. The produced four days-old adults were dissected for removing the testis or the ovary for microscopical investigations. The study revealed that pyriproxyfen and/or irradiation affected insignificantly the volume of the male testis and significantly the ovary of the female, injured the process of spermatogenesis and caused gross damage to the female ovary. The damage was increased with increasing the gamma dose level. Deformations were observed including shrinkage of testis and ovary contents, vacuolations and disturbances in the process of sperm and oocyte maturation

  8. Forschungsdatenmanagement als überregionale Aufgabe der Informationsversorgung - was kann eine Zentrale Fachbibliothek wie ZB MED Leibniz-Informationszentrum Lebenswissenschaften leisten?

    Directory of Open Access Journals (Sweden)

    Birte Lindstädt

    2015-12-01

    Full Text Available Forschungsdaten sind in aller Munde. Soll sich eine überregionale tätige Bibliothek deshalb auf diesem Feld engagieren? Und falls ja, für wen und wie? Auf der Grundlage einer breit angelegten Markt- und Zielgruppenanalyse strebt ZB MED ein zielgruppengerechtes Angebot im Bereich Forschungsdatenmanagement an, das sich in erster Linie an den Bedürfnissen der lebenswissenschaftlichen Fächer ausrichtet. Research Data Management is much talked about at present. Should a national library get involved in this field? If the answer is yes, what exactly should be offered and for whom? Based on a broad analysis of the market and the target groups, ZB MED is developing services in the field of research data management which focus on the special needs of the life sciences.

  9. Vitality Improvement of the Mediterranean Fruit Fly, Ceratitis capitata Wied 2- Measured by using ME and At Pase Enzyme Activities and Total Protein Content

    International Nuclear Information System (INIS)

    Salama, M.S.; Shoman, A.A.; Elbermawy, S.M.; Abul Yazid, I.

    2000-01-01

    The present investigation aims at producing sterile adult Mediterranean fruit fly, Ceratitis capitata Wied. Having the best possible vitality through the use of irradiation and /or a mutagenic substances to be used in a sterile insect technique program. Several types of mutagenic that were thought to cause mutations were used as IGR's, temperature, formaldehyde, colchicine, alcohols, serve ral types of larval rearing media and gamma-rays. In a common pathway, malic enzyme (ME) activity, adenosine triphosphatase (ATPase) enzyme activity and the total protein contents are studied as direct parameters for measuring vitality of the insect. It was found that there is an increment at levels of these parameters due to the treatment of egg stage by the previously mentioned treatments specially the usage of the rice hulls as a bulking component in the larval rearing media alone or followed by irradiation of the pupal stage with 90 Gy

  10. Comparative evaluation of two different coloured-pupal strains of the Mediterranean Fruit Fly, Ceratitis Capitata (Wied.) and some biological effects of gamma radiation on both of them

    International Nuclear Information System (INIS)

    Shoman, A.A.; Abulyazid, I.

    2002-01-01

    Dark spontaneous mutant pupae were isolated from brown laboratory reared pupae of the Mediterranean Fruit Fly, Ceratitis Capitata (Wied). This mutant was used construct a genetic sexing strain (G.S.S.) based on pupal sorting. Obtained data showed that there were no clear biological differences between the brown pupa wild-type) and dark pupae (mutant). Fecundity, %pupation, pupal size, pupal weight, % adults emergence, sex ratio, male mating competitiveness and male insemination females mated with studied. However, the present hatch ability of eggs laid by normal females mated with normal males emerging from the dark pupae was significantly reduced, compared to that of the brown pupae. No significant differences regarding the effects of gamma radiation (90 Gy) on all biological aspects were observed in both strains

  11. Selección de Cepas de Hongos Entomopatógenos para el Manejo de Anastrepha obliqua (Macquart, 1835 (Diptera: Tephritidae en Colombia Selection of Strains of Entomopathogenic Fungi for Management of Anastrepha obliqua (Macquart, 1835 (Diptera: Tephritidae in Colombia

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    Armando Osorio-Fajardo

    2011-12-01

    Full Text Available Se evaluaron 15 cepas de los hongos entomopatógenos Beauveria bassiana y Metarhizium anisopliae sobre adultos de un día de edad de la mosca de la fruta Anastrepha obliqua. El trabajo se realizó con el fin de seleccionar las cepas más virulentas al insecto y estudiar el efecto sobre los adultos jóvenes cuando el hongo era aplicado antes de la emergencia. Mediante un screening con una concentración de 1x10(7 conidias/mL se seleccionaron las tres cepas más virulentas, siendo dos de ellas de Beauveria y una de Metarhizium, las cuales causaron mortalidades del 77%, 71% y 66%. Valores de CL50 de 2,38x10(6, 1,81x10(6 y 9,94x10(6 conidias/mL, respectivamente, fueron determinados para cada una de estas cepas y un TL50 respectivo de 48,12; 56 y 42,75 horas. No se encontraron diferencias significativas en la mortalidad entre hembras y machos. La aspersión de la CL90 de las cepas seleccionadas sobre el medio de pupación de la mosca de la fruta produjo 34-48% de mortalidad durante las 120 horas de evaluación. Los hongos entomopatógenos pueden ser utilizados fácilmente para el control biológico de A. obliqua aplicándolos de manera dirigida a los adultos jóvenes bajo la copa de los árboles, en programas de manejo integrado de plagas.Fifteen strains from entomopathogenic Beauveria bassiana and Metarhizium anisopliae fungi were evaluated on one day-old adults of Anastrepha obliqua fruit fly. Tested were carried out for selecting the most virulent strains and the effectiveness of their use on young adult when the entomopathogen were applied before emergence were studied too. A screening with a 1x10(7 conidia/mL concentration was used for selecting the three most pathogenic isolates, two from Beauveria and one from Metarhizium, having 77, 71 and 66% mortality. The LC50 for these isolates were 2.38x10(6, 1.81x10(6 and 9.94x10(6 conidia/mL, respectively, and a respective LT50 were 48.12, 56 and 42.75 hours. No significant differences were found

  12. Visibility and Persistence of Marker Dyes and Effect on the Quality and Mating Competitiveness of Mass-Reared Flies (Diptera: Tephritidae): Anastrepha obliqua and Bisexual and Genetic Sexing (Tapachula-7) Strains of A. ludens.

    Science.gov (United States)

    Arredondo, José; Ruiz, Lia; López, Gladis; Díaz-Fleischer, Francisco

    2017-08-01

    Fluorescent dyes are commonly used in the sterile insect technique (SIT) for marking insects for a proper identification after recapture. However, the quality of the mark must be balanced against insect performance, because dyes can negatively affect some parameters of insect performance and reduce their effectiveness in control with the SIT. We determined the visibility and persistence and the effect of dyes on the quality of Anastrepha obliqua (Macquart) and Anastrepha ludens (Loew) (bisexual and genetic sexing strains) by testing four concentrations of a dye (Day-Glo) from 0 to 2.5 g dye/kg of pupae. Visibility and persistence of the mark were positively affected by dose and negatively affected by the length of time the samples were kept in a solution of 75% alcohol. However, upon dissection, even the lowest dose of dye was visible under a fluorescence microscope. Between dyed and undyed pupae (control), no significant differences were observed in rates of emergence, fliers and flight ability, and survival in two tests, with water and without food and without water and food, at any of the concentrations tested. Furthermore, no significant difference in mating competitiveness was detected between control pupae and those dyed at 1.0 and 2.5 g dye/kg pupae. We discuss our results with the possibility of reducing the dose of dye in these three flies, because the heads are large enough to capture sufficient particles to permit identification with the current methods of detection. © The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  13. SISTEMA DE CROMOSSOMOS SEXUAIS MÚLTIPLOS X1X1X2X2/X1X2Y NA MOSCA-DAS-FRUTAS Anastrepha sororcula (DIPTERA: TEPHRITIDAE

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    Inês Regina de Araújo Moura Cunha

    2014-08-01

    Full Text Available Sistemas de cromossomos sexuais simples estão difundidos entre os Tephritidae do gênero Anastrepha. Espécies deste gênero apresentam enorme importância pelo impacto que causam em frutíferas cultivadas, sobretudo no nordeste do Brasil. Análises citogenéticas desenvolvidas em Anastrepha sororcula, através da análise da estrutura cariotípica e bandamento C revelaram a presença de um sistema de cromossomos sexuais múltiplos do tipo X1X1X2X2/X1X2Y nesta espécie. Enquanto as fêmeas apresentam um cariótipo homomórfico com 2n=12, os machos possuem 2n=11, onde se destaca um grande cromossomo Y despareado. O nível de divergência cariotípica da espécie A. sororcula do nordeste, com a presença de um sistema de cromossomos sexuais múltiplos, em relação às regiões central e sudeste do Brasil, podem indicar a ocorrência de impedimentos reprodutivos entre os exemplares das duas áreas e que possivelmente, como outros exemplos que existem neste gênero, A. sororcula constitua um complexo de espécies ainda não inteiramente definido. Palavras-chave: Alossomos, peste agrícola, citogenética de insetos, heterocromatina. DOI: http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v4n2p1-4

  14. Some biological characters of two TSL genetic sexing strains of the Mediterranean Fruit Fly Ceratitis Capitata (WIED.) for its control using Sit

    International Nuclear Information System (INIS)

    Cacers, C.; El-Kholy, E.M.S.

    2007-01-01

    A biological comparison between two t sl s trains of the Mediterranean fruit fly, Ceratitis capitata Wied., was done. The biological parameters of this comparison involved pupal production, pupal emergence, adult sex ratio and flying ability. Two kinds of larval media were used (bran or carrot powder). Survival of the produced flies was also determined when deprived from water and food. Larval rearing was done in 5 kg trays (usual mass rearing) on sugar and bran medium or in experimental Petri dishes (15 cm in diameter and 1 cm in height) on powdered carrot medium. The results obtained revealed a better performance of Vienna 8 strain (V-8) than Vienna 7 strain (V-7) when larval rearing was carried out in 5 kg trays on the usual bran medium. However, when carrot larval diet was offered in small Petri dishes, V-7 was better as compared to V-8 strain. Adult males or females produced by V-7 showed longer survival than those produced by V-8 when adults were kept without food or water

  15. LABORATORY STUDIES ON THE EFFECTS OF FIVE ADULT DIETS ON SOME BIOLOGICAL ASPECTS OF NORMAL AND GAMMA IRRADIATED ADULT MEDITERRANEAN FRUIT FLY, CERATITIS CAPITATA (WIED.)

    International Nuclear Information System (INIS)

    EL-AKHDAR, E.A.H.

    2008-01-01

    To improve the sterile insect technique for controlling the Mediterranean fruit fly, Ceratitis capitata (Wied.), experiments were carried out to test the effect of four new adult protein sources on the insect vitality. Different yeasts consisting of almost the same nutritive components but differ in the quantity of protein were mixed with sugar as carbohydrate sources (2:3) and compared to the standard adult diet (enzymatic yeast hydrolysate : sugar, 1:3). Adults reared on each diet were evaluated biologically for their response to gamma radiation (90 Gy). The weight and size of the produced pupae from parents fed on the tested diets, percent of adult emergence, sex ratio, adults survival, egg hatchability and male mating competitiveness value (C.V.) for the following generations were taken as monitors for the insect vitality. The results showed that adult male and female survival for 5, 10 and 15 days from emergence, percent egg hatchability and male mating competitiveness value (C.V.) showed no sharp differences between three tested diets D3(Af), D4(YE300) and D5(YE00) as compared to the standard diet D1(YH, enzymatic yeast hydrolysate : sugar, 1:3) for parents and F1 progeny. However, when the second tested diet D2(Ay150) was used, the results showed a significant decreases in most of the tested biological aspects, especially in the male mating competitiveness value (C.V.), which is considered the most important monitor for male insect vitality

  16. Use of the space by the opossum Didelphis aurita Wied-Newied (Mammalia, Marsupialia in a mixed forest fragment of southern Brazil

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    Cáceres Nilton Carlos

    2003-01-01

    Full Text Available Use of the space by the opossum Didelphis aurita Wied-Newied, 1826 (Mammalia, Marsupialia in a mixed forest fragment of southern Brazil. The space use of the marsupial Didelphis aurita was studied in a forest fragment of southern Brazil from February 1995 to January 1996. The method used was the 'distribution utilization' in which each trap was set in 38 x 38 m quadrats. Captures of each marked individual in each point give information on its habitat use. Food availability was searched and compared to the habitat utilization and to the food consumption of opossums. Distribution patterns of captures (aggregated to random and spatial overlap between individuals were searched. Results showed aggregated distributions of individuals, particularly females, in the fragment. Females used exclusively the fragment during the drier season. Opossums tend to not choose the sites with highest food availability to establish home ranges. Spatial overlap was usually low between forest resident and neighbouring resident females, but much lower during the breeding season (only forest resident females in an apparently pattern of territoriality. Hence, core areas of females decreased in size during the breeding season. Males probably searched primarily for mates during the breeding season being less opportunistic than females in feeding habits, yet their space use did not correlate to food consumption.

  17. The dynamics of intraguild predation in Chrysomya albiceps Wied. (Diptera: Calliphoridae): interactions between instars and species under different abundances of food.

    Science.gov (United States)

    Rosa, Gisele S; de Carvalho, Lidia R; dos Reis, Sergio F; Godoy, Wesley A C

    2006-01-01

    The pattern of larval interaction in blowflies confined with Chrysomya albiceps Wied. and C. rufifacies Maquart can be changed in response to the predatory behaviour of the two species to a contest-type process instead of the scramble competition that usually occurs in blowflies. Facultative predation is a frequent behaviour in C. albiceps and C. rufifacies that occurs as an alternative food source during the larval stage. In this study, we investigated the dynamics of intraguild predation by C. albiceps on other fly species in order to analyse interspecific and intraspecific survival in C. albiceps, C. megacephala and C. macellaria Fabricius. The experimental design of the study allowed us to evaluate how factors such as species, density and abundance of food influenced the survival of the calliphorid species. When C. albiceps was confined with C. megacephala or C. macellaria, only adults of C. albiceps survived at different larval densities and abundance of food. In addition, the survival of C. albiceps was higher in two-species experiments when compared to single species experiments. The implications of these results for the dynamics of C. albiceps were discussed.

  18. Separate and combined effects of 1-pentanol applied to the eggs and gamma radiation applied to the pupae on some biological aspects of the medfly, ceratitis capitata Wied

    International Nuclear Information System (INIS)

    Wakid, A.M.; Fadel, A.M.

    1996-01-01

    Laboratory experiments were conducted on the medfly, ceratitis capitata (Wied) to study the separate and combined effects of the alcohol, l-pentanol (1-3%), applied to the eggs and gamma radiation (50 and 90 Gy) applied to the pupae on egg hatch, pupation, adult emergence. sex ration, adult survival, sterility and male mating competitiveness. The concentrations 1,2 and 3% of 1-pentanol applied to eggs for one or two days did not affect neither egg hatch, pupation, adult emergence nor sec ratio. Also there were no clear differences in adult emergence, sex ration or male and female survival, in different treatments studied (Irradiated, treated and treated irradiated). Male sterility, treated as eggs with 2% 1-pentanol for one or two days and irradiated as pupae (8-9 days), was increased significantly at 90 Gy compared to 50 Gy or the control. Moreover male competitiveness was increased significantly at 50 Gy compared to 90 Gy whether when eggs were treated with the alcohol or not. Treating eggs with the alcohol produced more competitive males especially when treatment was achieved for one day. 2 figs., 3 tabs

  19. Diet and feeding behavior of the White-naped Jay, Cyanocorax cyanopogon (Wied, 1821 (Aves, Passeriformes, Corvidae in a disturbed environment in central Brazil

    Directory of Open Access Journals (Sweden)

    RAM Barros

    Full Text Available The White-naped Jay Cyanocorax cyanopogon (Wied, 1821 is an omnivorous and opportunistic species, with a multifarious diet. In view of the scarcity of available data in the literature, the aim was to investigate and describe the bird's diet, location of food items, foraging tactics, actual feeding behavior and intraspecific interactions, as a means of defining the items consumed. The study was carried out in a Cerrado area in the Araguaia Campus of the Federal University of Mato Grosso – UFMT, in Pontal do Araguaia, Mato Grosso State, Brazil, from August to December, 2006, and from April to October, 2010. All the feeding events were recorded through 136 hours of animal focal sampling, whereby it was shown that these birds predominantly consume animal nutrients, replenished by vegetable items and human food-waste. Arthropods were predominant in the diet, with ants as the most abundant and frequent item. The fruits, flowers and seeds of eleven plant species were also consumed. Food-waste, representing about 1/10 of the total, was constantly consumed even when other food sources were available. Although active among the various strata, foraging is mainly on the ground. In the event of food-scarcity, the strategy employed is the hierarchical deployment of the members of various-sized groups, with the avoidance of direct competition. This versatility during all seasons, confirms total adaptation to the anthropic environment surrounded by native habitats that characterized the study site.

  20. Studies on the Effect of E-Selen as Antioxidant in Ameliorating the Physiological Status of Gamma-Irradiated Mediterranean Fruit Fly,Ceratits capitata (Wied.)

    International Nuclear Information System (INIS)

    Zaghloul, Y.S.; Abbassy, S.A.; Elakhdar, E.A.H.

    2013-01-01

    Biologically based control methods, such as the Sterile Insect Technique (SIT), which relies on the sterilization by irradiation of large numbers of insects, is gaining an increasing role in the control of medfly in Mediterranean areas. However, the exposure of cells to ionizing radiation leads to the formation of reactive oxygen species (ROS) that are associated with radiation-induced cytotoxicity. Because of the serious damaging potential of ROS, cells depend on the elaboration of the antioxidant defense system (AODS), both enzymatic and non enzymatic oxidant defense mechanisms. Enzymes of antioxidative defense system – peroxidase, esterasase and alcohol dehydrogenase are known to play an important main role in endogenous cell protection from oxidative damage.The antioxidant Eselenis an exogenous antioxidant containing both selenium and vitamin E. It was added to the larval artificial diets of the Mediterranean fruit fly, C. capitata in various concentrations. The produced full grown pupae were exposed to gamma rays at dose rate of 90Gy (sterilizing dose) and are used during this experiment. The purpose of this study was to determine the effects of gamma-irradiation on C. capitata endogenous antioxidant activity (peroxidase, esterase and alcohol dehydrogenase and to examine whether the presence of eselen has the influence on activity of antioxidant and in reducing consequently the oxidative stress and tissue injury induced by gamma radiation in thefruit fly, C. capitata (Wied.). The results indicated that antioxidant pretreatments to the larval rearing dietand irradiation of the produced full grown pupae may have some beneficial effects against irradiation-induced injury to success the application of the sterile insect technique (SIT) for controlling the Med fly, C. capitata .

  1. Alternative Sources Of Protein And Bulking Agent For Mass Rearing Of The Mediterranean Fruit Fly, Ceratitis Capitata (WIED.), For The Sterile Insect Technique (SIT)

    International Nuclear Information System (INIS)

    SHOMAN, A.A.

    2009-01-01

    The objective of this study was to develop suitable and economic diets for mass rearing of the Mediterranean fruit fly, Ceratitis capitata (Wied.) (Diptera: Tephritidae), larvae by testing alternative sources of protein and bulking agent. Two larval diet groups for laboratory rearing of the medfly were conducted in addition to the control diet. The first group kept the sources of bulking agent constant (wheat bran) while the kind and the ratio of sources of protein were changed (brewer's yeast, soybean, schemed milk and agar). In the second group, the fiber (used for filling the pillows) and a paste of cardboard eggs box trays were used instead of wheat bran as bulking agent against the yeast and soybean as protein sources. To investigate the effect of the new sources of bulking agent and the kind or the ratio of the protein sources on the development and viability of the medfly, larval duration, pupal recovery, pupal weight, adult emergence, and flight ability were checked. The larval duration, pupal weight, adult recovery and flight ability were unaffected when soybean or a mixture from yeast, soybean, schemed milk and agar as protein sources for larval diet were used. The larvae reared on diets based on schemed milk or agar as sources of protein did not complete their life cycle. The percent of pupal recovery of larvae reread on diets of soybean or a mixture of protein sources were not affected except when larvae were reared on diets based on a mixture of soybean and schemed milk or schemed milk and agar. Larval duration was extended by one to two days more than the control when the fiber or a mixture of it with bran or paste of cardboard of eggs box was used as bulking agent. A paste of cardboard eggs box as bulking agent led to the extension of the larval duration by more than four days than in control. Pupal recovery was significantly decreased at all diets of the second group except the diet containing a mixture of 4 % fiber and 10 % bran as bulking agent

  2. Flucht ins »Dritte Reich«. Wie Osteuropäer Schutz im NS-Staat suchten (1943–1945

    Directory of Open Access Journals (Sweden)

    Jan-Hinnerk Antons

    2017-08-01

    , Bedingungen und Dimensionen dieser Fluchtbewegung nach, sondern untersucht auch, was den Umgang der NS-Institutionen mit den Flüchtlingen bestimmte. Wie wurden die zentralen Faktoren Rassismus, ökonomische und militärische Nützlichkeitserwartungen sowie politische Loyalität in der Praxis gewichtet? Exemplarische Interpretationen der Ereignisse durch ukrainische Geflüchtete bilden dabei einen Kontrast zu Sichtweisen und Quellen der NS-Administrationen.

  3. Wie wissenschaftlich ist der Evolutionsgedanke?

    Science.gov (United States)

    Vollmer, Gerhard

    Darwin war ein besonnener Mann; alles Aufsehen war ihm zuwider. Trotzdem hat er eine Revolution ausgelöst, deren Wirkung nicht auf die Biologie beschränkt blieb. Seine Theorie lässt sich in fünf Teiltheorien zerlegen, die sich durch die Begriffe Artenwandel, Verwandtschaft alles Lebendigen und gemeinsamer Ursprung, Artenaufspaltung und Artenvielfalt, Gradualismus, natürliche Auslese charakterisieren lassen. Dadurch wurden mehrere religiöse und weitere weltanschauliche Überzeugungen in Frage gestellt. Deshalb wird die Evolutionstheorie auch heute noch vielfach kritisiert, ja bekämpft. Die Vorwürfe lassen sich ordnen nach den Kriterien, mit denen wir erfahrungswissenschaftliche Theorien beurteilen. Haltbar ist daran nur, dass es für die Evolutionstheorie zwar beliebig viele Bestätigungen gibt, aber nur wenige Widerlegungsmöglichkeiten. Durch die neuerdings entwickelten und durchgeführten Evolutionsexperimente ist die empirische Situation allerdings deutlich besser geworden. Am (erfahrungs)wissenschaftlichen Charakter der Evolutionstheorie besteht deshalb kein Zweifel.

  4. Cyborg oder Göttin: Wie Technikforscherinnen ihr Verhältnis zu Technik sehen Cyborg or Goddess: How Women Academics in Science and Technology View their Relationship to Technology

    Directory of Open Access Journals (Sweden)

    Ulrike Kissmann

    2001-11-01

    Full Text Available Die Autorinnen haben für die Beiträge eigene auto/biographische Erlebnisse ausgewählt, in denen der mediale Charakter von Technik deutlich wird. Die Geschichten erzählen also von Technik, die soziale Ordnung und Bedeutung vermittelt und auf diese Weise dazu beiträgt, Geschlechtergrenzen und andere Grenzen wie die zwischen „bekannt“ und „fremd“ oder „normal“ und „anormal“ herzustellen. Die Auto/Biographien sind durch Technik einerseits fremdbestimmt, andererseits zeigen die Autorinnen auch, wie Selbstbestimmung über diese Grenzen hinweg möglich ist. Sie benutzen Donna Haraways Cyborg Metapher (1985, um das Selbst in der Verflechtung von Sozialem und Technischem auto/biographisch zu rekonstruieren.The authors of this book have chosen examples from their individual life stories to illustrate the interpretative character of technology. These stories show how technology mediates social order and meaning and how technology thus contributes to negotiate gendered boundaries and other boundaries, for example, boundaries between “familiar” and “foreign” or “normal” and “abnormal”. The auto/biographies in this book are on the one hand influenced by technology; at the same time, the authors demonstrate that they are also able to transgress these boundaries. Using Haraway’s image of the cyborg (1985 the authors analyse the representation of the self within the interconnections of the social and the technical.

  5. Feeding ecology of Tropidurus torquatus (Wied (Squamata, Tropiduridae in two areas with different degrees of conservation in Marambaia Island, Rio de Janeiro, Southeastern Brazil Ecologia alimentar de Tropidurus torquatus (Wied (Sauria, Tropiduridae em duas áreas com diferentes níveis de conservação na Ilha da Marambaia, Rio de Janeiro, Sudeste do Brasil

    Directory of Open Access Journals (Sweden)

    André L. G. de Carvalho

    2007-03-01

    Full Text Available We compared the effects of habitat disturbance on the feeding ecology of two local populations of Tropidurus torquatus (Wied, 1820 in restinga habitats on Ilha da Marambaia, Southeastern Brazil. Both populations presented a relatively diverse diet and differ in the number (D Max = 0.22, DF = 2, p = 0.00 and volume of prey consumed (D Max = 0.82, DF = 2, p = 0.00. Ants were the most frequent and numerous preys in both areas, and plant matter and coleopterans were the most important alimentary items in volume. The population from the disturbed area presented a larger niche breadth for number of prey items consumed (Bi num = 3.06 and volume (Bi vol = 2.98, when compared to the other population (Bj num = 2.44, Bj vol = 1.52. Niche overlap was higher for number of items consumed between the populations (Oij num = 0.82 but lower for volume (Oij vol = 0.05. Our data suggest dietary differences between the two lizard populations, and these differences may be associated with environmental modifications. Our main hypothesis to explain the dietary differences is based in the Optimal Foraging Theory. However, the alimentary behavior, and consequently the diet of these lizards, seems to be constrained phylogenetically, with a pattern that may have evolved in the ancestor of all iguanids.Comparamos os efeitos da degradação ambiental sobre a ecologia alimentar de duas populações de Tropidurus torquatus (Wied, 1820 em áreas de restinga da Ilha da Marambaia, sudeste do Brasil. Ambas as populações apresentaram dieta relativamente diversa e deferiram em número (D Max = 0,22; DF = 2; p = 0,00 e volume de presas consumidas (D Max = 0,82; DF = 2; p = 0,00. Formigas foram os itens mais freqüentes e numerosos em ambas as áreas, e material vegetal e coleópteros os mais importantes em volume. A população da área perturbada apresentou maior largura de nicho alimentar para número de presas consumidas (Bi num = 3,06 e volume (Bi vol = 2,98, quando comparada

  6. Biologia da mosca‑das‑frutas sul‑americana em frutos de mirtilo, amoreira‑preta, araçazeiro e pitangueira Biology of South American fruit fly in blueberry, blackberry, strawberry guava, and Surinam cherry crops

    Directory of Open Access Journals (Sweden)

    Maicon Bisognin

    2013-02-01

    Full Text Available O objetivo deste trabalho foi descrever a biologia de Anastrepha fraterculus em frutos de mirtilo (Vaccinium ashei, amoreira‑preta (Rubus spp., araçazeiro (Psidium cattleyanum e pitangueira (Eugenia uniflora. O experimento foi realizado em laboratório, em condições controladas de temperatura (25±2ºC, umidade relativa (70±10% e fotófase (12 horas, para determinação dos parâmetros biológicos do inseto nos estágios de desenvolvimento imaturos e adultos. Anastrepha fraterculus completa o ciclo biológico em todos hospedeiros estudados, embora os frutos nativos (pitanga e araçá ofereçam melhores condições para seu desenvolvimento. Os parâmetros biológicos determinados para as fases imaturas foram semelhantes nos quatro hospedeiros. Insetos criados em pitanga e araçá apresentam, na fase adulta, maior período de oviposição, fecundidade e longevidade de fêmeas, em comparação aos criados em mirtilo e amora‑preta. O ritmo diário de oviposição é mais prolongado e uniforme nos insetos criados em araçá e pitanga, o que mostra que A. fraterculus está mais bem adaptada a estas frutas, nativas da região Sul.The objective of this work was to describe the biology of Anastrepha fraterculus in blueberry (Vaccinium ashei, blackberry (Rubus spp., strawberry guava (Psidium cattleyanum and Surinam cherry (Eugenia uniflora fruits. The experiment was carried out in laboratory under controlled conditions of temperature (25±2ºC, relative humidity (70±10%, and photophase (12 hours to determine insect biological parameters in immature and adult development stages. Anastrepha fraterculus finishes its biological cycle in all studied hosts; however, the Brazilian native fruits (strawberry guava and Surinam cherry provide better conditions for development of the insect. Biological parameters determined for immature development stadium were similar in the four hosts. Insects reared in Surinam cherry and strawberry guava showed, in the

  7. Wie das Neue in eine Brandenburgische Hochschulbibliothek kommt und nicht versiegen mag – Ein persönlicher Rückblick

    Directory of Open Access Journals (Sweden)

    Frank Seeliger

    2015-11-01

    Full Text Available Das Mantra der Kundenorientierung, Serviceentwicklung und die Verpflichtung zur Effektivität wie Effizienz bei der Bewältigung aller Geschäftsgänge sind mittlerweile Allgemeinplätze. Es verpflichtet Informationseinrichtungen, den aktuellen Entwicklungen und der Zeit auf den Fersen zu bleiben. Was bedeutet dies auf der alltäglich pragmatischen Ebene für eine überschaubare Fachhochschulbibliothek? Eine, die mit wenigen Ressourcen ausgestattet als Showcase, repräsentativer Raum, Boutique sich gut „verkaufen“ muss, um en vogue oder einfach nur relevant und interessant für Stakeholder, Nutzer sowie Mitarbeiter zu bleiben? Auf dem Campus der berlinnahen Informationseinrichtung wird seit dem Neubezug einer denkmalgeschützten Verladehalle 2007 versucht, dem gewinnenden Charme und anmutigen Ambiente des Porticus auch eine herausragende Rolle als Innovations-Hub für die Hochschule und Bibliotheken im Allgmeinen über gelebte neue Ideen abzugewinnen. Sie betreffen sowohl technische Lösungen in Bezug auf RFID, Visualisierung, Automatisierung und Software, aber auch Formate für Veranstaltungen und Weiterbildung. Was ist aber hierfür nötig, um das Neue, gekauft oder selbst gezimmert, immer wieder einfliessen zu lassen und sich mit dem Profil der tatkräftigen und kreativen Avantgarde zu identifizieren? Der Beitrag wird versuchen, das Umfeld dafür zu beleuchten, um Innovationen als selbstverständliche Erwartungshaltung reifen zu lassen. Der deskriptive Ansatz soll nach keineswegs vollständiger Reflexion eigener Bemühungen prima facie Anregung geben dazu, wie im öffentlichen Dienst und ohne direkte Tuchfühlung zu „schwarzen Zahlen“ eine Firmenkultur Einzug halten kann, die bei entsprechender Erwartungshaltung das Unvorhersehbare für sich höher einschätzt als das Vertraute. Es ist ein Plädoyer für das offene System, ein Hoch auf Veränderung und Neues, ohne damit in eine willkürliche Vielfalt zu geraten. Warum kann das

  8. INFLUENCE OF LARVAL REARING DIET ACIDITY ON THE QUANTITY AND QUALITY YIELD OF THE MEDITERRANEAN FRUIT FLY CERATITIS CAPITATA (Wied.) (DIPTERA: TEPHRITIDAE) FOR ITS CONTROL BY STERILE INSECT TECHNIQUE (SIT)

    International Nuclear Information System (INIS)

    SHOMAN, A.A.; EL-KHOLY, E.M.S.

    2008-01-01

    The biological effects of larval rearing diet acidity on the developmental stages of the medfly C. capitata (Wied.) were studied at the laboratory scale. Diets were formulated at five different initial pH ranging from 4.59 to 2.09 together with the control group currently used in our laboratory (5.26). These effects were evaluated on larval period, percent pupal recovery, pupal weight, percent adult emergence, percent male production and adult flight ability. The results showed that the shortest larval development occurred at pH 3.48 and 3.75, the highest pupal recovery at pH 3.75, the best pupal weight at pH 2.09, 3.48, 3.75 and 4.59, the highest percent adult emergence at pH 3.75, the highest percentage male production at pH 3.48, and the best percentage of fliers at pH 4.59. The obtained data referred to the optimizing physiochemical factors such as pH can improve the overall yield of mass reared medfly in the laboratory to be irradiated by gamma radiation and released in the field for controlling the insect

  9. Global CO{sub 2} emissions 2015. Trend reversion is still waiting, despite hopeful approaches; Weltweite CO{sub 2}-Emissionen 2015. Trendwende laesst trotz hoffnungsvoller Ansaetze nach wie vor auf sich warten

    Energy Technology Data Exchange (ETDEWEB)

    Ziesing, Hans-Joachim

    2016-10-15

    By 2015, global CO{sub 2} emissions were virtually unchanged from 2014 according to provisional calculations. On the whole, a slight increase may have resulted, which has slowed the growth of the past few years. In the previous year alone, the weakest growth since the beginning of the century had been recorded, with only 0.7% of the upturn (with the exception of the crises in 2008/2009). As a result, CO{sub 2} emissions in 2015 were only slightly higher than in the previous year, at 33.1 billion tonnes. A global trend reversal is still likely, but the CO{sub 2} emissions have declined in many countries, particularly in some industrialized countries. [German] Im Jahr 2015 haben sich die weltweiten CO{sub 2}-Emissionen nach vorlaeufigen Berechnungen gegenueber 2014 praktisch nicht veraendert. Insgesamt duerfte sich allenfalls ein leichtes Plus ergeben haben, womit der Zuwachs der vergangenen Jahre erneut gebremst wurde. Schon im Vorjahr war mit einem Plus von nur 0,7 % der bis dahin (mit Ausnahme der Krisenjahre 2008/2009) schwaechste Anstieg seit Beginn des Jahrhunderts zu verzeichnen gewesen. Im Ergebnis blieben die CO{sub 2}-Emissionen 2015 mit reichlich 33,1 Mrd. t nur geringfuegig ueber dem Niveau des Vorjahres. Eine weltweite Trendwende steht wohl noch nach wie vor aus, doch sind immerhin die CO{sub 2}-Emissionen in zahlreichen Laendern, insbesondere in etlichen Industrielaendern, gesunken.

  10. The use of commercial yeast as a protein source in the adult diet of the Mediterranean Fruit Fly, Ceratitis Capitata (Wied.) for its control using the sterile insect technique

    International Nuclear Information System (INIS)

    Shoman, A.A. and others

    2002-01-01

    The effect of the using eight different artificial adult diets of the mediterranean fruit fly, ceratitis capitata (Wied.) on egg and larval production was studied. Adults fed on complete homogenate diet consisting of 75% raw sugar 25% yeast hydrolysate, showed a slightly insignificant decrease in the number of eggs and larvae produced/ female/ day. In absence of yeast hydrolysate, adults offered either only pure or raw sugar, showed a drastically significant decrease in both the number of eggs laid and larvae produced by one female/day. On the other hand, when the protein source was offered as a mixture of yeast hydrolysate and commercial yeast in the ratio 1:1 and offered pure or raw sugar as a carbohydrate source, the egg and larval production were almost not affected. Moreover, when the protein source was offered as totally commercial yeast and using pure or raw sugar as a carbohydrate source at the ratio 1:3, egg and larval production were highly significantly reduced. The results showed that, the 3 diets producing the highest number of eggs and larval/female/day were that consisting of raw sugar and yeast hydrolysate at the ratio 3:1 as well as those consisting of raw sugar and yeast hydrolysate and commercial yeast at the ratio 6:1:1. these 3 diets showed almost no effect on neither pupal or adult production nor sex ratio compared to control diet

  11. Deposição diária e sazonal de gordura subcutânea em Phacellodomus rufifrons (Wied (Aves, Furnariidae Daily and seasonal deposition of subcutaneous fat in Phacellodomus rufifrons, a Neotropical ovenbird

    Directory of Open Access Journals (Sweden)

    Fernando F. Goulart

    2007-01-01

    Full Text Available Aves que habitam regiões temperadas acumulam gordura a fim de sobreviver às condições extremas da noite. Níveis de deposição de gordura nessas aves aumentam ao longo do dia e atingem um pico no entardecer e diminuem ao longo da noite, quando a alimentação não é possível. Aliado a isso, existe o aumento estacional dos depósitos de lipídeos assim que o inverno se aproxima, e permite que a ave sobreviva naquela estação. Pouco se conhece sobre esses padrões em aves tropicais. O presente trabalho verifica a dinâmica de deposição de gordura de Phacellodomus rufifrons (Wied, 1821, um furnarídeo (Passeriformes, Furnariidae endêmico da região Neotropical, em um ambiente tropical bastante sazonal, o cerrado do sudeste do Brasil. O trabalho de campo foi realizado entre agosto de 2001 a julho de 2002, no Parque Nacional da Serra do Cipó, município de Jaboticatubas, Minas Gerais. Os dados de gordura subcutânea foram classificados visualmente em aves capturadas. Foram estabelecidas quatro categorias para a variação da gordura subcutânea depositada na cavidade da fúrcula. Foi encontrado um aumento significativo nos níveis de gordura ao longo do dia, como para espécies de regiões temperadas, mas não ouve variação ao longo das estações do ano. A massa corporal média não variou ao longo do ano e nem ao longo do dia. Os resultados mostram que variações diárias no cerrado podem atuar como fator de estresse que pode desencadear a adaptações fisiológicas para atravessar a noite. Por outro lado, variações estacionais podem ser balanceadas pelo habito dos indivíduos de P. rufifrons pernoitarem durante todo o ano dentro do ninho, um comportamento relativamente raro entre os Passeriformes.It is known that birds inhabiting temperate regions accumulate fat in order to survive a night of extreme conditions. Levels of fat depots arise as the day goes by, reaching its pick at dusk and decreasing along the night hours when no

  12. Spielend Fremdsprachen lernen – Wie können digitale Spiele den Fremdsprachenerwerb unterstützen? - Eine kurze Übersicht über den derzeitigen Stand der Forschung

    Directory of Open Access Journals (Sweden)

    Sonja Gabriel

    2016-09-01

    Full Text Available Digitalen Spielen wird in den letzten Jahren auch immer häufiger eine Rolle im Fremdsprachenerwerb bzw. im Fremdsprachenunterricht zugestanden, indem sie entweder gezielt im Unterricht eingesetzt werden oder aber auch im Freizeitbereich dazu beitragen, dass sich Lernende mit der Fremdsprache auseinandersetzen. Dieser Beitrag möchte aufzeigen, worin die Potenziale der Spiele liegen (z. B. Motivation, situativer Kontext und Wortschatzerweiterung. Gleichzeitig wird aber auch festgestellt, dass es häufig mit dem Spielen alleine nicht getan ist. Um einen Transfer von im Spiel Gelernten in die Realität zu gewährleisten, ist es notwendig, dass pädagogisch-didaktisch aufbereitete Materialien im Unterrichtssetting eingesetzt werden, damit der Spracherwerb unterstützt wird. Dies belegen auch einige Studien (z. B. Yip/Kwan 2006, Miller/Hegelheimer 2006, Ranalli 2008, die untersucht haben, wie und was aus verschiedenen Spielen (vor allem in Online-Rollenspielen in Bezug auf Fremdsprache gelernt werden kann. Digital games have become more and more important in recent years when it comes to second language acquisition by either using them explicitly in language classes or by being used in non-formal contexts. This article is going to show the potentials of digital games like motivation, providing context and learning new words. However, there will also be a discussion about only playing games not being enough for learning a foreign language. In order to ensure transfer from in-game learning into reality, it is necessary to accompany learning with teaching and learning materials. There are several studies cited (e. g. Yip/Kwan 2006, Miller/Hegelheimer 2006, Ranalli 2008 having looked into how and what gamers learn regarding second (or foreign languages. Most of the studies refer to online role-playing games.

  13. Isolation, identification and determination of the biological activity of candidate fruit volatile components from Argania spinosa L. (Sapotacea)

    International Nuclear Information System (INIS)

    Bakri, A.; Dueben, B.D.; Proveaux, A.T.; Heath, R.R.

    2006-01-01

    This study provides detailed information on the diversity, abundance, guilds, host plant and host fly ranges, distribution, and taxonomic status of hymenopterous parasitoid species associated with Ceratitis capitata (Wiedemann) and Anastrepha spp. (A. fraterculus (Wiedemann) and A. schultzi Blanchard) in Argentina. Moreover, the article also argues future needs regarding the use of some parasitoid species as an alternative tool in fruit fly management programs of the National Fruit Fly Control and Eradication Program (PROCEM-Argentina). Data used for this work were obtained from numerous old and recent published articles on fruit fly parasitoids in Argentina. (author)

  14. Isolation, identification and determination of the biological activity of candidate fruit volatile components from Argania spinosa L. (Sapotacea)

    Energy Technology Data Exchange (ETDEWEB)

    Bakri, A., E-mail: bakri@ucam.ac.m [University Cadi Ayyad, Marrakech (Morocco). Fac. of Science Semlalia. Insect Biological Control Unit; Dueben, B.D.; Proveaux, A.T.; Heath, R.R., E-mail: rheath@saa.ars.usda.go [U.S. Department of Agriculture (USDA/REE-ARS), Miami, FL (United States). Agricultural Research Service

    2006-07-01

    This study provides detailed information on the diversity, abundance, guilds, host plant and host fly ranges, distribution, and taxonomic status of hymenopterous parasitoid species associated with Ceratitis capitata (Wiedemann) and Anastrepha spp. (A. fraterculus (Wiedemann) and A. schultzi Blanchard) in Argentina. Moreover, the article also argues future needs regarding the use of some parasitoid species as an alternative tool in fruit fly management programs of the National Fruit Fly Control and Eradication Program (PROCEM-Argentina). Data used for this work were obtained from numerous old and recent published articles on fruit fly parasitoids in Argentina. (author)

  15. Review of existing species of fruit flies in Ecuador

    International Nuclear Information System (INIS)

    Tigrero, Juan

    1998-01-01

    This study was carried out since 1990 to 1997. The goal was to figure out different species of fruit fly that inhabit in Ecuador. For the identification we put special emphasis in the female genitalia. We recommend to do more research into this subject, because of the few studies done in our country and the importance of fruit cultivation. We mention 32 genus in the family Tephritidae in Ecuador, including the introduced genus Ceratitis. Into Toxotrypaninae are pointing out the presence of one specie of the Toxotrypana genus and 31 species of the Anastrepha genus, detailing brilly the 27 species most common. General notions about taxonomic bases are mentioned in order to identify species of the Anastrepha Schiner, pointing out certain fenotipic characteristics that prove variability among the ecuadorian's population, mainly A. fraterculus, A. distincta, A. obliqua, A. striata, and others. (The author)

  16. Wirklich wie im wirklichen Leben. Sarah Kember untersucht die (Re-Produktion des kleinen Unterschieds und seiner großen Folgen in Theorie und Praxis von Artificial Life Real as in real life. Sarah Kember examines the (reproduction of ‘the small difference and its big consequences’ in the theory and practice of artificial life.

    Directory of Open Access Journals (Sweden)

    Verena Kuni

    2004-03-01

    Full Text Available Wie greifen diese ‚virtuellen Realitäten‘ in unsere Körper- und Identitätskonzepte, unsere Subjekt- und Geschlechtervorstellungen ein? Sarah Kembers Buch verspricht, erhellende Schneisen durch das Dickicht der definitionsmächtigen Diskurse, Konzepte und Konstruktionen zu schlagen und neue Wege für feministische Interventionen in die Auseinandersetzungen um ‚Artificial Life‘ aufzuzeigen.ow a way through the labyrinth of discourse, concepts and constructions, and to open the door for feminist interpretations in debates about artificial life.

  17. Nichts ist so stetig wie der Wandel

    DEFF Research Database (Denmark)

    Brem, Alexander; Fuchs, Ch.

    2013-01-01

    management is widely spread and a common theory has not yet been established. Due to the weak focus on SMEs, this paper proposes a model for the transformation of SMEs based on qualitative research in four enterprises. The model is based on an incremental and intuitive change process. It gains theoretical...... as well as practical importance because in the examined segment a successful change required fewer success factors as proposed by the literature....

  18. Van wie zijn zij? De ambtenaren

    NARCIS (Netherlands)

    Peters, Jit

    2011-01-01

    Aan de hand van actuele voorbeelden gaat Jit Peters tijdens zijn afscheidscollege in op de toegenomen macht van ambtenaren. De loyaliteit van de ambtenaar is volgens hem nu te veel gericht op het ondersteunen van de eigen minister. Als tegenwichten van de macht van de ambtenaar staat Peters stil bij

  19. Wie passt der LHC in den Physikunterricht?

    CERN Document Server

    AUTHOR|(CDS)2084439; Woithe, Julia; Brown, Alex; Jende, Konrad

    2017-01-01

    Der LHC bietet sich als aktuelles und prominentes Beispiel der Grundlagenforschung an, im Unterricht behandelt zu werden. Der Artikel gibt einen kurzen Überblick über Komponenten und Funktionsweise des LHC. Zudem wird auf hilfreiche Ressourcen und Anknüpfungspunkte zum Curriculum verwiesen.

  20. Wie sehen Eltern die Freizeit ihrer Kinder?

    NARCIS (Netherlands)

    dr Yolanda te Poel; Prof. dr. M. du Bois-Reymond; Dr. E. Zeijl

    2000-01-01

    Op basis van empirische data wordt aangetoond hoe in moderne gezinnen wordt omgegaan met de vrije tijd van kinderen.Zowel kinderen als hun ouders ontwikkelen een hoge mate van flexibiliteit om een evenwicht te vinden tussen vrije tijd als ontspanningstijd en vrijetijd als 'leertijd'. Ouders

  1. Wie nutzen deutsche Tiermedizinerinnen und Tiermediziner soziale Netzwerke? Eine Untersuchung am Beispiel des tiermedizinischen Netzwerks „NOVICE“ [How do German veterinarians use social networks? A study, using the example of the 'NOVICE' veterinary medicine network

    Directory of Open Access Journals (Sweden)

    Schaper, Elisabeth

    2013-02-01

    figures developed very positively during the assessed time period. Until now, the focus of the content of contributions in NOVICE (Network of Veterinary ICT in Education has been on veterinary medicine teaching supported by e-Learning. An increase in the number of members would, however, be beneficial in order to further develop the network so that valuable exchange of information and informal learning can also take place in other specialist areas of veterinary medicine. [german] Zielsetzung: NOVICE (Network Of Veterinary ICt in Education, ist ein soziales professionelles online-Netzwerk für Tiermediziner, Dozierende und Studierende der Tiermedizin sowie für E-Learning-Berater bzw. Didaktiker der veterinärmedizinischen Bildungsstätten. In dieser Arbeit sollte untersucht werden, wie die Akzeptanz bei deutschen Tierärzten, Dozierenden und Studierenden der Veterinärmedizin sowie E-Learning-Beauftragten für ein fachspezifisches Netzwerk ist, welche Anforderungen durch die Nutzer an soziale online-Netzwerke gestellt werden, wie der Umgang mit Web 2.0-Werkzeugen , erfolgt und welches Potential ein berufsspezifisches Netzwerk bieten könnte. Methodik: Die Untersuchung erfolgte mittels Datenanalyse durch die Datenbank der Elgg-Plattform sowie zusätzlich mit google analytics. Jährliche Fokusgruppenbefragungen und Einzelinterviews wurden durchgeführt, um eine Akzeptanzanalyse der Netzwerk-Nutzer vorzunehmen.Ergebnisse: In NOVICE haben sich zwischen dem 01. September 2010 und 21. März 2012 1961 Mitglieder aus 73 Ländern registriert, dabei hat Deutschland mit 565 Nutzern (28,81% den größten Anteil. In diesem Zeitraum kamen auch die meisten Einzelbesuche der Webseite aus Deutschland. Insgesamt sind im Netzwerk 24,83% aller Mitglieder und 19,22% der deutschen Mitglieder aktiv. In Bezug auf das Geschlecht befinden sich sowohl in Hinblick auf alle Mitglieder als auch auf die deutschen Mitglieder deutlich mehr Frauen als Männer in NOVICE. Die am häufigsten verwendeten Web

  2. Ocorrência precoce da mosca das frutas em ameixas Incidence of the southamerican fruit fly on plums

    Directory of Open Access Journals (Sweden)

    Luiz Antonio Salles

    1999-06-01

    Full Text Available O objetivo deste estudo foi verificar qual o estágio fenológico mais precoce da fruta de ameixeira em que ocorreria o ataque de mosca das frutas Anastrepha fraterculus. Os estudos foram conduzidos em plantas adultas de ameixeira, expondo-se fêmeas grávidas da mosca das frutas, confinadas em gaiolas com frutos protegidos do ataque natural. Cinco cultivares de ameixeira foram estudados (Amarelinha, Pluma 7, Reubennel, Santa Rosa e Wade. Essa praga ataca frutos de qualquer um dos cultivares logo nos primeiros estádios do desenvolvimento, quando os mesmos têm somente cerca de 2 a 3cm de diâmetro.The incidence of the southamerican fruit fly, Anastrepha fraterculus, on plum cultivars is reported. The objective of this study was to know the earliest fruit phase that fly attack could occur. Fertilized females were confined with fruits in plum trees in an orchard. Five plums cultivars were studied: Amarelinha; Pluma 7; Reubennel; Santa Rosa and Wade. This pest attack fruits during first stages of their development, mainly they have only from 2 to 3 centimeters of diameter.

  3. Índice de infestação e diversidade de moscas-das-frutas em hospedeiros exóticos e nativos no pólo de fruticultura de Anagé, BA Index of infestation and diversity of fruit-flies in exotic hosts native to the fruitculture area in Anagé, Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Ricardo Falcão de Sá

    2008-01-01

    Full Text Available As moscas-das-frutas (Diptera: Tephritidae são os principais entraves às exportações de manga nos pólos de fruticultura da Região Sudoeste da Bahia. O presente trabalho teve como objetivo estudar índices de infestação e a diversidade de moscas-das-frutas no pólo de fruticultura de Anagé, BA, visando obter subsídios para o manejo integrado dessas pragas na mangueira, na região. Os estudos foram realizados em 2004 e 2005, nos municípios de Anagé, Belo Campo e Caraíbas, BA, procedendo-se à coleta de frutos de 21 espécies vegetais, nativas e exóticas, e identificação das espécies de moscas associadas. Estimaram-se os índices de infestação em pupários/kg de fruto e pupários/fruto. Os maiores índices de infestação, em pupários/kg de fruto, ocorreram em serigüela (Spondias purpurea L. com 61,3, juá (Ziziphus joazeiro L., 38,3 e umbu (Spondias tuberosa L., 33,1, considerados hospedeiros primários de Anastrepha fraterculus (Wiedemann e A. obliqua (Macquart. As maiores infestações em pupários/fruto ocorreram em serigüela (0,9; umbu (0,7 e cajarana (Spondias sp. (0,2. Com base no monitoramento larval, registra-se, para as condições do pólo de fruticultura de Anagé, a ocorrência das espécies Anastrepha fraterculus, A. obliqua, A. dissimilis, A. amita, A. distincta, A. sororcula, A. zenildae e Ceratitis capitata. Registram-se, pela primeira vez, as seguintes associações bitróficas: juá com A. fraterculus, A. obliqua, A. dissimilis e A. distincta; e umbu com A. amita e A. sororcula.Fruit-flies (Diptera: Tephritidae are the main hindrance for mango exportation in the fruitculture areas of the Southwestern Region of Bahia. The purpose of the present work was to study the indexes of infestation and diversity of fruit-flies in the fruitculture area of Anagé, BA, in order to obtain subsidies to the integrated management of these pests in mango, in this region. Studies were carried out in 2004 and 2005 in the

  4. Assessment of differences between X and γ rays in order to validate a new generation of irradiators for insect sterilization

    International Nuclear Information System (INIS)

    Mastrangelo, Thiago; Walder, Julio M.M.; Parker, Andrew G.; Jessup, Andrew; Orozco-Davila, Dina; Islam, Amirul; Dammalage, Thilakasiri; Pereira, Rui

    2009-01-01

    Recent fears of terrorism provoked an increase in delays and denials of transboundary shipments of radioisotopes. This represents a serious constraint to sterile insect technique (SIT) programs around the world as they rely on the use of ionizing energy from radioisotopes for insect sterilization. In order to validate a novel Xray irradiator, a series of studies on Ceratitis capitata (Wiedemann) and Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) were carried out, comparing the relative biological effectiveness (RBE) between X-rays and traditional γ radiation from 60 Co. Male C. capitata pupae and pupae of both sexes of A. fraterculus, both 24 to 48 h before adult emergence, were irradiated with doses ranging from 15 to 120 Gy and 10 to 70 Gy respectively. Estimated mean doses of 91.2 Gy of X and 124.9 Gy of γ radiation induced 99% sterility in C. capitata males. Irradiated A. fraterculus were 99% sterile at about 40-60 Gy for both radiation treatments. Standard quality control parameters were not significantly affected by the two types of radiation. There were no significant differences between X and γ radiation regarding mating indices. The RBE did not differ significantly between the tested X and γ radiation, and X-rays are as biologically effective for SIT purposes as γ rays are. This work confirms the suitability of this new generation of X-ray irradiators for pest control programs in UN Member States. (author)

  5. Wie viel Syntax braucht die Semantik, und wie viel Semantik enthält die Syntax?

    Directory of Open Access Journals (Sweden)

    Hubert Haider

    2004-05-01

    Full Text Available The nature of the syntax-semantics interface is a controversial issue in grammar theory. Current theorizing in Generative Grammar endorses a 'tight fit' conception. Abstract syntax is to provide distinct structural configurations for distinct semantic entities in terms of semantically typed functional heads that project functional phrases. Positive and convincing evidence for the tight fit approach is wanting. The opposite viewpoint, once called the autonomy viewpoint in Generative Grammar, takes syntax to be a module of grammar that is not necessarily tailored to the needs of semantics. It is an algorithm that maps strings on structures and vice versa. The semantic construction algorithm maps syntactic structure on adequate semantic domains. In this contribution, evidence from three areas syntax of adverbials, syntax of negation, alleged semantic correlates of argument structure are reviewed in order to clarify which of the two viewpoints is more likely to be adequate. It is argued that the autonomy approach is superior.

  6. Wie viel Syntax braucht die Semantik, und wie viel Semantik enthält die Syntax?

    Directory of Open Access Journals (Sweden)

    Hubert Haider

    2004-05-01

    Full Text Available The nature of the syntax-semantics interface is a controversial issue in grammar theory. Current theorizing in Generative Grammar endorses a 'tight fit' conception. Abstract syntax is to provide distinct structural configurations for distinct semantic entities in terms of semantically typed functional heads that project functional phrases. Positive and convincing evidence for the tight fit approach is wanting. The opposite viewpoint, once called the autonomy viewpoint in Generative Grammar, takes syntax to be a module of grammar that is not necessarily tailored to the needs of semantics. It is an algorithm that maps strings on structures and vice versa. The semantic construction algorithm maps syntactic structure on adequate semantic domains. In this contribution, evidence from three areas syntax of adverbials, syntax of negation, alleged semantic correlates of argument structure are reviewed in order to clarify which of the two viewpoints is more likely to be adequate. It is argued that the autonomy approach is superior.

  7. 76 FR 43804 - Movement of Hass Avocados From Areas Where Mediterranean Fruit Fly or South American Fruit Fly Exist

    Science.gov (United States)

    2011-07-22

    ... dorsalis), peach fruit fly (Anastrepha zonata), and sapote fruit fly (Anastrepha serpentina) in the... obliqua, Anastrepha serpentina, and Anastrepha striata (Diptera: Tephritidae) in Mexico. J. Econ. Entomol...

  8. Diversity and seasonality of fruit flies (Diptera: Tephritidae and Lonchaeidae) and their parasitoids (Hymenoptera: Braconidae and Figitidae) in orchards of guava, loquat and peach

    Energy Technology Data Exchange (ETDEWEB)

    Souza-Filho, M.F.; Raga, A. [Instituto Biologico, Campinas, SP (Brazil)], e-mail: miguelf@biologico.sp.gov.br; Azevedo-Filho, J.A. [Agencia Paulista de Tecnologia dos Agronegocios (APTA), Monte Alegre do Sul, SP (Brazil). Polo Regional do Leste Paulista; Strikis, P.C. [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Inst. de Biologia. Dept. de Parasitologia; Guimaraes, J.A. [EMBRAPA Agroindustria Tropical, Fortaleza, CE (Brazil); Zucchi, R.A. [Escola Superior de Agricultura Luiz de Queiroz (ESALQ/USP), Piracicaba, SP (Brazil). Dept. de Entomologia, Fitopatologia e Zoologia Agricola

    2009-02-15

    This work was carried out in orchards of guava progenies, and loquat and peach cultivars, in Monte Alegre do Sul, SP, Brazil, in 2002 and 2003. Guavas and loquats were bagged and unbagged bi-weekly and weekly, respectively, for assessment of the infestation period. Peach was only bagged weekly. The assays started when the fruits were at the beginning of development, but still green. Ripe fruits were taken to the laboratory and placed individually into plastic cups. McPhail plastic traps containing torula yeast were hung from January 2002 to January 2004 to assess the fruit fly population in each orchard, but only the Ceratitis capitata population is here discussed. Five tephritid species were reared from the fruits: Anastrepha bistrigata Bezzi, A. fraterculus (Wiedemann), A. obliqua (Macquart), A. sororcula Zucchi, and C. capitata, in addition to six lonchaeid species: Neosilba certa (Walker), N. glaberrima (Wiedemann), N. pendula (Bezzi), N. zadolicha McAlpine and Steyskal, Neosilba sp. 4, and Neosilba sp. 10 (both species are in the process of being described by P. C. Strikis), as well as some unidentified Neosilba species. Ten parasitoid species were obtained from fruit fly puparia, of which five were braconids: Asobara anastrephae (Muesebeck), Doryctobracon areolatus (Szepligeti), D. brasiliensis (Szepligeti), Opius bellus Gahan, and Utetes anastrephae (Viereck), and five figitids: Aganaspis pelleranoi (Brethes), Dicerataspis grenadensis Ashmead, Lopheucoila anastrephae (Rhower), Leptopilina boulardi (Barbotin, Carlton and Kelner-Pillaut), and Trybliographa infuscata Diaz, Gallardo and Uchoa. Ceratitis capitata showed a seasonal behavior with population density peaking at the second semester of each year. Anastrepha and Neosilba species remained in the orchards throughout both years. (author)

  9. Injúrias causadas por mosca-das-frutas sul-americana em cultivares de videira

    Directory of Open Access Journals (Sweden)

    Marcelo Zart

    2011-01-01

    Full Text Available A mosca-das-frutas sul-americana, Anastrepha fraterculus (Wiedemann (Diptera: Tephritidae, é uma das principais pragas da fruticultura no Brasil. O objetivo deste estudo foi identificar a suscetibilidade quanto à queda e deformação de bagas de diferentes cultivares/espécies de uva pela injúria causada pela oviposição de A. fraterculus. O trabalho foi realizado em vinhedos das cultivares 'Cabernet Sauvignon' (Vitis vinifera, 'Moscato Embrapa' (75% de V. vinifera e 'Isabel' (Vitis labrusca, localizados em Bento Gonçalves (RS, na safra 2006/2007. Dois casais de A. fraterculus foram confinados por cacho, em gaiolas de tecido voile, durante os estádios fenológicos de grão ervilha, início da compactação, início da maturação e maturação plena dos cachos. Queda significativa de bagas devido ao ataque de A. fraterculus foi registrada na cultivar 'Cabernet Sauvignon' quando a infestação foi realizada nos estádios fenológicos de grão ervilha e início da compactação de cacho; estádios de grão ervilha em 'Moscato Embrapa'; e nos estádios de grão ervilha, início da compactação e início da maturação do cacho na cultivar 'Isabel'. Foi registrada deformação de bagas quando as infestações foram realizadas nos estádios de grão ervilha e início da compactação de cacho em 'Cabernet Sauvignon', 'Moscato Embrapa' e 'Isabel'. O desenvolvimento larval até a fase de pupa foi observado somente na cultivar 'Moscato Embrapa'.

  10. Short circuit - How our power supply became more expensive and got worse. A critical balance after eight years ''deregulation'' of the German Energy Economy; Kurzschluss - Wie unsere Stromversorgung teurer und schlechter wurde. Eine kritische Bilanz nach acht Jahren ''Liberalisierung'' der deutschen Energiewirtschaft

    Energy Technology Data Exchange (ETDEWEB)

    Leuschner, U.

    2007-07-01

    verursachte. Wie Leuschner feststellt, waere der Schaltungsfehler der EON-Netzleitstelle Lehrte vor ein paar Jahren noch vom System toleriert worden. Er habe nur deshalb so gravierende Folgen haben koennen, weil das UCTE-Netz inzwischen durch den Stromhandel und andere Folgen der Deregulierung bis an die Grenzen seiner Kapazitaet belastet sei. Im dritten Teil (''Netznutzung und Netzentgelte'') beleuchtet er in einem zusaetzlichen Kapitel die Bemuehungen der EU-Kommission, doch noch die Rahmenbedingungen fuer echten Wettbewerb herzustellen. Die neueste Forderung der Kommission nach eigentumsmaessiger Entflechtung der Netze deutet er als ''Flucht nach vorn'' angesichts der Tatsache, dass in saemtlichen EU-Laendern seit der Liberalisierung die Strompreise gestiegen sind und das zum Teil sogar ueber die Haelfte (mit der einzigen Ausnahme Englands, und hier auch nur der Haushaltsstrompreise). Kraeftig erweitert hat der Verfasser auch den vierten Teil zum Thema ''Management und Politik'': Zum einen findet man hier nun beschrieben, wie Ex-Bundeskanzler Gerhard Schroeder einen Spitzenjob beim russischen Energiekonzern Gazprom erhielt, dem er bereits in seiner Amtszeit als Bundeskanzler politisch behilflich war, und wie sein ehemaliger Wirtschaftsminister Wolfgang Clement in den Aufsichtsrat von RWE Power einziehen durfte. Zum anderen wird ein kritischer Blick auf die Werbekampagnen geworfen, mit denen die Energiekonzerne versuchen, ihr Erscheinungsbild in der Oeffentlichkeit aufzuhellen und den Energieverbrauchern ein X fuer ein U vorzumachen. (orig.)

  11. Hymenopteran parasitoids associated with frugivorous larvae in a Brazilian caatinga-cerrado ecotone.

    Science.gov (United States)

    De Souza, A R; Lopes-Mielezrski, G N; Lopes, E N; Querino, R B; Corsato, C D A; Giustolin, T A; Zucchi, R A

    2012-04-01

    The purpose of this study was to investigate native species of parasitoids of frugivorous larvae and their associations with host plants in commercial guava orchards and in typical native dry forests of a caatinga-cerrado ecotone in the State of Minas Gerais, Brazil. Nine species of parasitoids were associated with larvae of Anastrepha (Tephritidae) and Neosilba (Lonchaeidae) in fruit of Psidium guajava L. (Myrtaceae), Ziziphus joazeiro Mart. (Rhamnaceae), Spondias tuberosa Arruda (Anacardiaceae), Spondias dulcis Forst. (Anacardiaceae), Syzygium cumini (L.) Skeels (Myrtaceae), and Randia armata (Sw.) DC. (Rubiaceae). Doryctobracon areolatus was the most abundant species, obtained from puparia of Anastrepha zenildae, An. sororcula, An. fraterculus, An. obliqua, and An. turpiniae. This is the first report of Asobara obliqua in Brazil and of As. anastrephae and Tropideucoila weldi in dry forests of Minas Gerais State. The number of species of parasitoids was higher in areas with greater diversity of cultivated species and lower pesticide use. The forest fragments adjacent to the orchards served as shelter for parasitoids of frugivorous larvae.

  12. Incidence of fruit flies on coffee and citrus and quarantine treatment of citrus fruits by gamma radiation; Incidencia de moscas-das-frutas em cafe e citros e tratamento quarentenario de frutos citricos com radiacao gama

    Energy Technology Data Exchange (ETDEWEB)

    Raga, Adalton

    1997-12-31

    The objective of this study was to evaluate the fruit fly infestation on coffee and citrus, and also to determine gamma radiation doses for immature stages of Ceratitis capitata and Anastrepha fraterculus, in order to satisfy quarantine regulations. Coffee arabica varieties Icatu Vermelho, Catuai Amarelo, Mundo Novo and Sarchimor showed the highest infestation indices (pupa/berry): 0.53; 0,41; 0.33 and 0.36. respectively Icatu Vermelho and Catuai Vermelho showed the highest values of pupa/berry weight (0.49 and 0.39, respectively), and Robusta (Coffea canephora) presented the lowest index (0.01). The following fruit flies were found in coffee berries: C. capitata (76.6%) Anastrepha spp. (7.4%) and Lonchaeidae (17.0%). In area near coffee plantation, fruit fly infestation indices in sweet oranges were of 4.77 larvae/kg and 0.55 larva/fruit. The infestation indices for sweet orange, collected from five regions of the State of Sao Paulo ranged from 0.73 to 7.60 pupa/kg and 0.12 to 1.27 pupa/fruit. The same species of fruit flies were found in oranges. In the case of C. capitata eggs with 24-48 hours old, 20 Gy prevented completely adult emergence (artificial diet and orange). No emergence of adult occurred when C. capitata larvae of third instar were irradiated at 20 Gy in their rearing medium. But at 25 Gy, the number of adults was reduced by 54% and 97% from larval infestation in oranges and grapefruit, respectively. A dose of 30 Gy was required to prevent medfly emergence from third instar larvae in grapefruit. A dose of 15 Gy was required for third instar, to prevent adult emergence of A. fraterculus. No adult emerged from C third instar, to prevent adult emergence of A. fraterculus. No adult emerged from C capitata pre-pupa irradiated at 30 Gy. One medfly adult emerged from pupa (3-4 days after pupating) irradiated at 120 Gy. At the same dose, sixteen A. fraterculus adults emergency from irradiated pupa with 5-6 days old. (author) 85 refs., 2 figs., 13 tabs.

  13. Incidence of fruit flies on coffee and citrus and quarantine treatment of citrus fruits by gamma radiation; Incidencia de moscas-das-frutas em cafe e citros e tratamento quarentenario de frutos citricos com radiacao gama

    Energy Technology Data Exchange (ETDEWEB)

    Raga, Adalton

    1996-12-31

    The objective of this study was to evaluate the fruit fly infestation on coffee and citrus, and also to determine gamma radiation doses for immature stages of Ceratitis capitata and Anastrepha fraterculus, in order to satisfy quarantine regulations. Coffee arabica varieties Icatu Vermelho, Catuai Amarelo, Mundo Novo and Sarchimor showed the highest infestation indices (pupa/berry): 0.53; 0,41; 0.33 and 0.36. respectively Icatu Vermelho and Catuai Vermelho showed the highest values of pupa/berry weight (0.49 and 0.39, respectively), and Robusta (Coffea canephora) presented the lowest index (0.01). The following fruit flies were found in coffee berries: C. capitata (76.6%) Anastrepha spp. (7.4%) and Lonchaeidae (17.0%). In area near coffee plantation, fruit fly infestation indices in sweet oranges were of 4.77 larvae/kg and 0.55 larva/fruit. The infestation indices for sweet orange, collected from five regions of the State of Sao Paulo ranged from 0.73 to 7.60 pupa/kg and 0.12 to 1.27 pupa/fruit. The same species of fruit flies were found in oranges. In the case of C. capitata eggs with 24-48 hours old, 20 Gy prevented completely adult emergence (artificial diet and orange). No emergence of adult occurred when C. capitata larvae of third instar were irradiated at 20 Gy in their rearing medium. But at 25 Gy, the number of adults was reduced by 54% and 97% from larval infestation in oranges and grapefruit, respectively. A dose of 30 Gy was required to prevent medfly emergence from third instar larvae in grapefruit. A dose of 15 Gy was required for third instar, to prevent adult emergence of A. fraterculus. No adult emerged from C third instar, to prevent adult emergence of A. fraterculus. No adult emerged from C capitata pre-pupa irradiated at 30 Gy. One medfly adult emerged from pupa (3-4 days after pupating) irradiated at 120 Gy. At the same dose, sixteen A. fraterculus adults emergency from irradiated pupa with 5-6 days old. (author) 85 refs., 2 figs., 13 tabs.

  14. Incidence of fruit flies on coffee and citrus and quarantine treatment of citrus fruits by gamma radiation

    International Nuclear Information System (INIS)

    Raga, Adalton

    1996-01-01

    The objective of this study was to evaluate the fruit fly infestation on coffee and citrus, and also to determine gamma radiation doses for immature stages of Ceratitis capitata and Anastrepha fraterculus, in order to satisfy quarantine regulations. Coffee arabica varieties Icatu Vermelho, Catuai Amarelo, Mundo Novo and Sarchimor showed the highest infestation indices (pupa/berry): 0.53; 0,41; 0.33 and 0.36. respectively Icatu Vermelho and Catuai Vermelho showed the highest values of pupa/berry weight (0.49 and 0.39, respectively), and Robusta (Coffea canephora) presented the lowest index (0.01). The following fruit flies were found in coffee berries: C. capitata (76.6%) Anastrepha spp. (7.4%) and Lonchaeidae (17.0%). In area near coffee plantation, fruit fly infestation indices in sweet oranges were of 4.77 larvae/kg and 0.55 larva/fruit. The infestation indices for sweet orange, collected from five regions of the State of Sao Paulo ranged from 0.73 to 7.60 pupa/kg and 0.12 to 1.27 pupa/fruit. The same species of fruit flies were found in oranges. In the case of C. capitata eggs with 24-48 hours old, 20 Gy prevented completely adult emergence (artificial diet and orange). No emergence of adult occurred when C. capitata larvae of third instar were irradiated at 20 Gy in their rearing medium. But at 25 Gy, the number of adults was reduced by 54% and 97% from larval infestation in oranges and grapefruit, respectively. A dose of 30 Gy was required to prevent medfly emergence from third instar larvae in grapefruit. A dose of 15 Gy was required for third instar, to prevent adult emergence of A. fraterculus. No adult emerged from C third instar, to prevent adult emergence of A. fraterculus. No adult emerged from C capitata pre-pupa irradiated at 30 Gy. One medfly adult emerged from pupa (3-4 days after pupating) irradiated at 120 Gy. At the same dose, sixteen A. fraterculus adults emergency from irradiated pupa with 5-6 days old. (author)

  15. FRUIT FLIES (DIPTERA: TEPHRITIDAE AND THEIR PARASITOIDS ASSOCIATED WITH DIFFERENT HOG PLUM GENOTYPES IN TERESINA, PIAUÍ

    Directory of Open Access Journals (Sweden)

    LEONARDO DA SILVA SOUSA

    2017-10-01

    Full Text Available ABSTRACT The aim of this work was to identify and quantify the infestation of fruit fly species and their parasitoids, associated with 20 hog plum genotypes (Spondias mombin L. in a commercial orchard in Teresina, Piauí, Brazil. The survey was conducted by fruit sampling and monitoring through traps stocked with bait food, in the period from January to December 2012. Overall, 6560 fruits were collected (79.58 kg, resulting in 23059 pupae, of which 10080 fruit flies of the genus Anastrepha and 4984 braconid parasitoids emerged. Anastrepha obliqua species was the predominant with 99.92%. F16P13 and F11P10 genotypes had the highest infestation indexes and F15P11 and F04P01 genotypes, the lowest. The main parasitoids collected were Opius bellus (77.65%, Doryctobracon areolatus (19.88% and Utetes anastrephae (2.47%. The average parasitism rate among genotypes was of 30.46%. In traps, a total of 1434 fruit flies were collected, whose species were: A. obliqua (97.6%, A. serpentina (1.4%, A. fraterculus (0.4%, A. striata (0.4%, A. dissimilis (0.1%, A. pseudoparallela (0.1%. Anastrepha obliqua species was predominant in the area, based on faunistic analysis. The infestation index in the orchard was relevant for five months (January-May, coinciding with the period of availability of hog plum fruits, reaching the highest peak in March (2.86 FAT. There was a significant negative correlation between number of fruit flies in the orchard and the average air temperature, and a significant positive correlation with rainfall and relative humidity. However, the main factor that influenced the observed infestation index in the hog plum orchard was fruit availability.

  16. How does the German executive judge the risk of a global climate change? An opinion survey on the risk management in environmental policy; Wie schaetzt die deutsche Exekutive die Gefahr eines globalen Klimawandels ein? Eine Meinungsumfrage zum Risikomanagement in der Umweltpolitik

    Energy Technology Data Exchange (ETDEWEB)

    Krueck, C. [VDI-Technologiezentrum Physikalische Technologien, Duesseldorf (Germany). Abt. Zukuenftige Technologien; Bray, D. [GKSS-Forschungszentrum Geesthacht GmbH (Germany). Inst. fuer Gewaesserphysik

    2000-07-01

    Global warming is a problem which is scientifically complex and risky for political institutions. Coping with this problem requires elaborate methods of information exchange and accommodation between scientific and political institutions in order to facilitate risk management and decisions under uncertainty. This paper explores the relationship between science and politics based on the results of a survey of representatives of the German executive branch (both on the Federal and the Laender level) who are in charged with regulating environmental, nature and climate protection affairs. Results indicate that the top-level administrative staff in Germany perceive climate change as an urgent problem but are undecided whether 'climate research has managed to remain a neutral, value-free science'. Climate change is perceived as an exceptionally complex problem for science which is still faced with numerous knowledge gaps. At present, the relation problem for science which is still faced with numerous knowledge gaps. At present, the relation between the executive branch and climate research is trust-based but also quite distanced, particularly, at the regional (Laender) level. (orig.) [German] Die Warnung vor einer globalen Erwaermung konfrontiert die Politik mit einem Problem, das wissenschaftlich komplex und politisch riskant ist. Die Bewaeltigung derartiger Probleme erfordert ein hohes Mass an Informationsaustausch und Verstaendigung zwischen politischen und wissenschaftlichen Institutionen, um Risikomanagement zu betreiben und Entscheidungen unter Unsicherheit zu treffen. Um ein genaueres Bild davon zu gewinnen, wie die Bedrohung des Klimawandels in der deutschen Politik wahrgenommen und handhabbar gemacht wird, wurde ein wichtiges Segment des deutschen politischen Systems unter die Lupe genommen: Fuehrende Vertreter der Exekutive (Verwaltung), die auf Bundes- und Laenderebene mit Fragen des Umwelt-Natur- und Klimaschutzes befasst sind, wurden zum Thema

  17. Moscas-das-frutas (Diptera: Tephritidae em um pomar de goiabeira, no semiárido brasileiro

    Directory of Open Access Journals (Sweden)

    Elton Lucio Araujo

    2013-06-01

    Full Text Available As moscas-das-frutas (Diptera: Tephritidae são pragas-chave na cultura da goiabeira Psidium guajava L., com predominância de diferentes espécies de acordo com a região produtora no Brasil. Os objetivos do presente trabalho foram conhecer a diversidade e analisar parâmetros faunísticos das moscas-das-frutas obtidas em um pomar de goiabeira, no município de Cruzeta, Rio Grande do Norte, situado no semiárido brasileiro. As moscas-das-frutas foram coletadas semanalmente, com auxílio de armadilhas McPhail, tendo como atrativo proteína hidrolisada a 5% v/v. Foram registradas cinco espécies no pomar estudado: Ceratitis capitata (Wied., Anastrepha zenildae Zucchi, Anastrepha sororcula Zucchi, Anastrepha obliqua (Macquart e Anastrepha dissimilis Stone. Ceratitis capitata foi a espécie mais frequente, constante e dominante, considerada como uma praga invasiva, potencial em pomares de goiabeira no semiárido brasileiro.

  18. Apple biological and physiological disorders in the orchard and in postharvest according to production system

    Directory of Open Access Journals (Sweden)

    Carlos Roberto Martins

    2013-03-01

    Full Text Available The study aimed to evaluate the incidence of biological and physiological disorders in the field and postharvested apples cvs. Gala, Fuji and Catarina grown in four production systems: conventional, organic transition, integrated and organic. Apples were evaluated for damages related to biological and physiological disorders in the orchard and after harvest. The greatest damages were attributed to pests, especially Anastrepha fraterculus in the organic system and Grapholita molesta in the organic transition. Apples produced in organic orchards had higher damage levels caused by postharvest physiological disorders than those grown in other production systems. For apples becoming from organic orchards most of the damage was due to lenticels breakdown and degeneration ('Gala', and bitter pit ('Fuji' and 'Catarina'. The incidence of postharvest rot was not influenced by apple production system.

  19. Determination of gamma radiation dose as a post-harvest treatment in mangos infested with the South American fruit fly

    International Nuclear Information System (INIS)

    Alama, D.

    1999-01-01

    Efforts are being made to determine a gamma radiation dose for mortality of third-instar larvae of Anastrepha fraterculus which infest mangos of the Haden variety of 400 g weight. Four radiation treatments were tested: 0.4 kGy, 0.6 kGy, 0.8 kGy and 1.0 kGy. Using as a criterium for mortality the interruption of the biological cycle between larva and pupa, the following results were achieved: 49.61%, 63.33%, 74.86% and 90.72%. The percentages obtained have been corrected using the Abbot formula. When the criterium was based on no adult emergence, 100% mortality was achieved for the four treatments. (author)

  20. Sex Pheromone Investigation of Anastrepha serpentina (Diptera: Tephritidae)

    Science.gov (United States)

    Attraction of virgin females to odor of calling males was demonstrated. This sex pheromone mediated attraction occurred during the latter half of a 13-h photophase but not during the first half of the day. Two major components of emissions of calling males, 2,5-dimethylpyrazine (DMP) and 2,5-dihyd...

  1. Diversity and indices of infestation of fruit flies and their parasitoids in six coffee cultivars in the city of Bom Jesus of Itabapoana, RJ

    Directory of Open Access Journals (Sweden)

    Patrícia Sobral Silva

    2011-11-01

    Full Text Available This study focuses one of the most important pests of world fruit crop: the fruit flies, however, there are few studies concerned with their association with coffee fruit. This study was carried out in the municipality of Bom Jesus do Itabapoana, in the Northwest Region of Rio de Janeiro State, Brazil, aiming at determining the species which occur in the coffee plantations of this region, their natural infestation indices and the natural parasitism of these species. Mature fruits of six cultivars of Arabic coffee (‘Acauã’ ‘Catuaí Amarelo’, ‘Catuaí Vermelho’, ‘Catuaí 785’, ‘Mundo Novo’e ‘2SL Vermelho’ were collected. All cultivars evaluated were infested by fruit flies, which were associated with only one species of parasitoid in each cultivar. A total of 1,749 puparia were obtained and from which emerged 460 adults, being 441 specimens of fruit flies and 19 parasitoids. Four species of fruit flies were obtained: Anastrepha fraterculus (Wiedemman, 1830, Anastrepha sororcula (Zucchi, 1979, Ceratitis capitata (Wiedemann, 1824, (Tephritidae and Neosilba pendula Bezzi, 1919 (Lonchaeidae. The mean natural infestation index of the coffee fruits by fruit flies was of 291.5 puparia/kg and 0.4 puparia/fruit. There was a predominance of A. fraterculus over C. capitata, which was more frequent only in ‘Catuaí Vermelho’ and ‘Catuaí 785’. All parasitoids belong to the family Braconidae [Asobara sp., Opius bellus (Gahan, 1930 and Doryctobrachon areolatus (Szépligeti, 1911], which were responsible for a very low level of natural parasitism (1.1%.

  2. SELETIVIDADE DE INSETICIDAS A Neoseiulus californicus MCGREGOR (ACARI: PHYTOSEIIDAE EM MACIEIRA, NO RIO GRANDE DO SUL AGROCHEMICAL SELECTIVITY TO Neoseiulus californicus MCGREGOR (ACARI: PHYTOSEIIDAE ON APPLE IN RIO GRANDE DO SUL

    Directory of Open Access Journals (Sweden)

    LINO BITTENCOURT MONTEIRO

    2001-12-01

    Full Text Available Testes para determinar os efeitos de agroquímicos homologados para macieira foram realizados em laboratório sobre Neoseiulus californicus (Acari: Phytoseiidae. Os indivíduos testados foram coletados de um pomar comercial da Agriflor Ltda, em Vacaria, Rio Grande do Sul, após várias liberações inoculativas. Os inseticidas utilizados foram os tradicionalmente recomendados para o controle de pragas, principalmente mosca-das-frutas Anastrepha fraterculus (Diptera: Tephritidae. A oviposição e a mortalidade dos ácaros foram avaliadas 12; 24; 48 e 96 horas após a pulverização, cujos produtos foram classificados em quatro classes de toxicidade (IOBC/WPRS. Azinphos ethyl, deltametrina e fenthion provocaram 100% de mortalidade, sendo que dimethoate, fenitrotion, paration, phosmet e triclorfon foram levemente nocivos (classe 2. Malation foi considerado neutro para esta população.The side-effects of agrochemical to Neoseiulus californicus (Acari: Phytoseiidae were studied in laboratory. The mites were collected in commercial apple orchard of Agropastoril Rincão das Flores, in Vacaria, Rio Grande do Sul, Brazil, after successive inoculative releases. The insecticids used were recommended to control of same pest, as Anastrepha fraterculus (Diptera: Tephritidae. The reproduction effect and mortality were evalued 12, 24, 48 and 96 hours after pulverization, while the agrochemical were ranked in toxicity classes, according to IOBC/WPRS. Azinphos ethyl, deltametrina e fenthion were harmful with ca. 100% of mortality in 24 hours, dimethoate, fenitrotion, paration, phosmet e triclorfon were slightly harmful (class 2. Malation was harmless.

  3. EMBALAGENS NA PROTEÇÃO CONTRA PRAGAS DE FRUTOS DE CAQUIZEIRO

    Directory of Open Access Journals (Sweden)

    Carine Rusin

    2015-12-01

    Full Text Available The persimmon culture can be attacked by several pests and diseases, however, there are few studies related to the control. In addition, there is a lack of pesticides registered in the Ministry of Agriculture, Livestock and Supply (MAPA, in Portuguese “Ministério da Agricultura, Pecuária e Abastecimento”, emerging the fruit bagging as an alternative. The aim of this study was to evaluate different kinds of protective packs for bagging persimmon fruits, in order to control pests and diseases and, consequently, improve the fruit quality. The experiment was conducted in a persimmon orchard on the experimental station of the Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul (IFRS, located in the Tuiuty District, in Bento Gonçalves, RS. Were performed four treatments: control (not bagged fruits, perforated polypropylene packaging, white TNT (non woven tissue packing, and kraft brown paper packing. The harvested fruits were evaluated for weight, symptoms of caterpillars damage, presence of mealybug (Pseudococcus sp. and symptoms of Schyzothyrium pomi. The fluctuation population of Anastrepha fraterculus was performed using McPhail trap with hydrolyzed protein. Among the treatments, only the fruits protected with perforated polypropylene differ significantly from the control on the evaluations of weight and Schyzothyrium pomi symptoms. However, there was no significant difference on the damage caused by caterpillars and presence of mealybugs. The use of perforated polypropylene has demonstrated efficiency on the control of Anastrepha fraterculus, and it can be used to reduce the damage in the fruits.

  4. Controle da infestação natural de ceratitis capitata (Wied., 1824 (Diptera, Tephritidae em pêssegos(Prunus persica através das radiações gama Control of naturally infested peaches (Prunus persica by mediterranean fruit fly (Ceratitis capitata through the use of gamma radiation

    Directory of Open Access Journals (Sweden)

    V. Arthur

    1993-12-01

    Full Text Available Determinou-se a dose desinfestante de radiações gama para pêssegos, Prunus persica, infestados com larvas da mosca do Mediterrâneo, Ceratitis capitata. Utilizaram-se frutas de procedência conhecida no campo fazendo-se uma amostragem prévia, constatando-se que cada fruta continha em média nove larvas do último ínstar da mosca praga. As frutas foram irradiadas em uma fonte de Cobalto-60 com as seguintes doses de radiação gama: 0 (test., 25, 50, 100, 200, 400, 600, 800, 1000 e 1200 Gy, sob uma taxa de 58 Gy por minuto. Após a irradiação as frutas foram colocadas em câmaras climatizadas com a temperatura variando entre 23 e 27°C e a umidade relativa variando entre 65 e 75%. Aguardou-se que as larvas deixassem as frutas e se transformassem em pupas e adultos. A dose letal para larvas, pelos resultados obtidos no experimento, concluiu-se ser de 600 Gy. A dose letal para pupas provenientes de larvas irradiadas dentro das frutas foi de 50 Gy, impedindo totalmente a emergência de adultos.Determination of the dose of gamma radiation to disinfest peaches, Prunus pérsica infested with larvae of Ceratitis capitata (Wied., 1824 was made. Fruits were collected in the field, each one holding about nine larvae of the last instar of the fruit-fly. The fruits were irradiated with Cobalt-60 gamma radiation source at the following doses: 0 (control, 25, 50, 100, 200, 400, 600, 800, 1000 and 1200 Gy; at a dose rate of 58 Gy per minute. After irradiation the fruits were kept in a climatic chamber with the temperature adjusted between 23 and 27°C, and relative humidity between 65 and 75 percent, until the larvae left the fruits and were transformed into pupae and adults. It was concluded that the lethal dose of gamma radiation for larvae at the last instar, in naturally infested peaches, was 600 Gy and the dose of 50 Gy inhibited completely the emergency of adults.

  5. How solar power is preserved; Wie Sonnenstrom haltbar wird

    Energy Technology Data Exchange (ETDEWEB)

    Heup, Juergen; Rentzing, Sascha

    2013-06-15

    The expansion of photovoltaics only works, if stores are able to buffer the fluctuating solar energy. Economic technologies are still missing, but the researchers are pursuing several promising approaches (e. g. lithium batteries, sodium sulfur batteries, redox-flow batteries, hydrogen storage (power-to-gas), heat pump). [German] Der Ausbau der Photovoltaik funktioniert nur, wenn Speicher die schwankende Solarenergie puffern. Noch fehlen wirtschaftliche Technologien, doch die Forscher verfolgen einige viel versprechende Ansaetze (z.B. Lithium-Batterien, Natrium-Schwefel-Batterien, Redox-flow-Batterien, Wasserstoffspeicherung (Power-to-Gas), Waermepumpe).

  6. 'Je moeder leert je wie je vijanden zijn'

    NARCIS (Netherlands)

    Makkink, C.; Parmentier, H.K.

    2014-01-01

    Via de voeding van ouderdieren kan de werking van het immuunsysteem van de nakomelingen worden beïnvloed. Het is een uitdaging om interventies te vinden die het immuunsysteem van landbouwhuisdieren optimaliseren, zo luidde de conclusie tijdens de Feed4Foodure-themamiddag.

  7. Industrie 4.0: Wie Unternehmen ihre Daten heute sichern

    OpenAIRE

    Jung, Christian

    2016-01-01

    Eine wichtige Grundlage für die Weiterentwicklung innovativer Syste-me im Zeitalter von Industrie 4.0 sind klare Sicherheitsstandards. Gerade im Zuge der zunehmenden Vernetzung müssen Unternehmen die Sicherheit ihrer Daten neu organisieren. Es geht um die erweiterte Zugriffskontrolle und "Smart Contracts", bei denen Daten sich selbst schützen.

  8. Wie viel Kapazität hat ein Mobilfunknetz?

    Science.gov (United States)

    Eisenblätter, Andreas; Geerdes, Hans-Florian

    Wer hat das noch nicht erlebt? Der Akku ist aufgeladen und reichlich Guthaben vorhanden, doch das Telefonieren mit dem Handy klappt trotzdem nicht. Meist liegt das daran, dass man sich in einem Funkloch befindet. Aber manchmal ist auch das Netz überlastet. Anders gesagt: das Funknetz des Mobilfunkanbieters, das viele Antennen auf Hausdächern oder Masten umfasst, bietet entweder nicht genügend Abdeckung oder nicht genügend Kapazität. Genau das will der Anbieter natürlich vermeiden. Mathematik hilft, diese Herausforderungen mit einer guten Planung des Mobilfunknetzes zu bewältigen.

  9. Wie sind Zeit, Raum und Zustand sprachlich verbunden?

    DEFF Research Database (Denmark)

    Colliander, Peter

    Seit Einstein weiß man, dass Zeit und Raum keine voneinander unabhängigen Phänomene sind, sondern zumindest wenn man sich der Lichtgeschwindigkeit nähert- dass sie in Relation zueinander stehen, was in der Relativitätstheorie mit dem Begriff ,Raumzeit‘ terminologisch festgehalten wird. Ich möchte...... jdm . einen guten Start in die neue Woche -Jd. hat in der kommenden Woche Urlaub). Diese an und für sich banalen Tatsachen wurden in der Forschung kaum und in den DaF-Lehrwerken erst recht nicht beachtet, wobei die Tatsache, dass die deutsche Sprache einen Schritt weitergeht und Zustande genauso...

  10. Ein altes Problem: Partikeln in der Grammatik - ja, aber wie?

    Directory of Open Access Journals (Sweden)

    Kärnä, Aino

    2005-01-01

    Full Text Available This article deals with the concept 'particle', specifically with the German notion of 'Abtönungspartikel'. These pragmatic or modal particles were first discussed in contemporary German grammars by Harald Weydt. Although the concept itself is clear, it is difficult to include such a category in existing grammars, as is shown by the treatment of such inflexible words in different editions of the standard German grammar, Der Duden. It seems difficult to formulate a description of the word class 'particle' in such a way that it includes pragmatic particles as well as other kinds of particles, such as focus particles. This problem is not new, and I also discuss parallels from the history of linguistics.

  11. Customer Confusion: Wie Produktvielfalt dem Unternehmen schaden kann

    OpenAIRE

    Kuester, Sabine; Buys, Sebastian

    2009-01-01

    In einer von starkem Wettbewerb gekennzeichneten Umwelt müssen Unternehmen ihr Produktportfolio positiv von ihren Wettbewerbern differenzieren, um langfristig erfolgreich zu sein. Das Festlegen der einzelnen Produktliniengrößen ist dabei eine besonders kritische Herausforderung. Auf der einen Seite ist es wichtig, Produktvielfalt zu bieten, um die Bedürfnisse verschiedener Kundensegmente zu erfüllen. Auf der anderen Seite laufen U...

  12. Quality measurements of the gamma irradiated medfly ceratitis capitata wied

    International Nuclear Information System (INIS)

    Elkholy, E.M.S.

    1986-01-01

    The damage caused by the mediterranean fruit fly (Medfly) Ceratitis capitata (Wiedemann) to Egyptian agriculture is increasing mainly because farmers are finding it harder to choose suitable means of control in view of the difficulties frequently associated with the use of insecticides, such as undesirable residues and biological disequilibrium. Recently, the sterile-insect technique has opened up new possibilities of this insect control in egypt. The use of sterile insects to eradicate or suppress populations of pests was conceived by knipling,(1955) and applied successfully for the first time in 1954 against the screw-worm fly, cochliomyia hominivorax (cocquerel) on the island of curacao (Baumhover et al., 1955) and then in 1958 and 1959 in the south-eastern united states of america (knipling, 1960)

  13. Wie is die sondaar? Die beskouing van Karl Barth

    Directory of Open Access Journals (Sweden)

    F. J. van Zyl

    1994-01-01

    Full Text Available Who is the sinner? The view of Karl Barth The previous article dealt with Barth’s view of the knowledge and real essence of sin, while this one focus on his view of the human being as sinner. In accordance with his christological approach to all theological matters, Barth presents us with a description of the image and character of the sinner as mirrored by the obedient suffering and death of Jesus Christ on the cross in the place of all sinners of all times - past, present and future. The price that God paid in surrendering his only Son to such suffering, indicates the enormous guilt and baseness of every sinner. Every human being is utterly insolvent and can only be delivered from sin through God’s graceful remission of siru

  14. Wie is die sondaar? Die beskouing van Karl Barth

    OpenAIRE

    F. J. van Zyl

    1994-01-01

    Who is the sinner? The view of Karl Barth The previous article dealt with Barth’s view of the knowledge and real essence of sin, while this one focus on his view of the human being as sinner. In accordance with his christological approach to all theological matters, Barth presents us with a description of the image and character of the sinner as mirrored by the obedient suffering and death of Jesus Christ on the cross in the place of all sinners of all times - past, present and future. Th...

  15. Wissensmanagementsysteme in Schulen oder: wie bringe ich Ordnung ins Chaos?

    Directory of Open Access Journals (Sweden)

    Andreas Breiter

    2002-11-01

    Full Text Available Die zunehmende Ausstattung von Schulen mit digitalen Medien wird zu einer Herausforderung für die Organisationsentwicklung. Digitale Materialien der Lehrkräfte sowie Schülerarbeiten in digitalisierter Form wachsen tagtäglich an. Bisher fehlen geeignete organisatorische und technische Möglichkeiten zur Archivierung, Verteilung und Nutzung. In Unternehmen hat sich mit dem Begriff Wissensmanagement ein organsatorisches Konzept etabliert, das die Nutzung der Ressource Wissen optimieren will. Um diese Prozesse zu unterstützen, wurden und werden informations- und kommunikationstechnische Werkzeuge entwickelt, deren Übertragung auf den Schulbereich aufgrund dessen organisatorischer Komplexität aber scheitern muss. In diesem Beitrag werden diese Besonderheiten herausgestellt und die Erfahrungen mit der Entwicklung eines webbasierten Wissensmanagementsystems in Zusammenarbeit mit Schulen skizziert.

  16. How risky is fracking?; Wie riskant ist das Fracking?

    Energy Technology Data Exchange (ETDEWEB)

    Mooney, Chris

    2012-08-15

    For enhanced flow rates and in order to develop unconventional sources of natural gas rock formations are breaked up around the well by injecting a liquid. The author of the contribution under consideration examines the question of whether this fracking endangers the groundwater.

  17. Population genetics of the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Kourti, A.; Loukas, M.; Economopoulos, A.P.

    1990-01-01

    The genetic structure of 15 wild populations of Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann), sampled from different geographical areas and different host fruit tree species, has been studied. Each population was analysed for 25 enzyme systems detected electrophoretically. All the Mediterranean populations proved to be highly monomorphic (H-bar=0.053) whereas those from South Africa and Reunion were highly heteromorphic (H-bar=0.234 and 0.153 respectively). As the urea denaturation method was used, no hidden genetic variability caused by the usual electrophoretic conditions was detected. The most probable explanation of the low genetic variability observed in the introduced populations of the medfly seems to be the historical reasons, namely the time elapsed since colonization and the number of individuals of the founder population. Experiments in the field and in the laboratory failed to detect any pattern of preference for oviposition sites in the medfly populations. More specifically, the differences in allele frequencies for the polymorphic loci among these populations do not seem to be correlated either with the taxonomic status of the host fruit or with the size of the fruit. It is concluded that the medfly as a fine grained species may utilize many alternative food resources without an apparent action of selection (or at least one that is detectable by the methods used). By estimating the genetic distances between the populations and/or by using the allozymes as genetic markers the route(s) of dispersion of the fly from its geographic centre of origin, which is placed in Africa, could be roughly traced. Finally, no systematic changes in allele frequencies were observed in populations reared on artificial substrate. (author). 43 refs, 2 figs, 9 tabs

  18. Ganglion block. When and how?; Ganglienblockade. Wann und wie?

    Energy Technology Data Exchange (ETDEWEB)

    Bale, R. [Medizinische Universitaet Innsbruck, Sektion fuer Mikroinvasive Therapie Universitaetsklinik fuer Radiologie, Innsbruck (Austria)

    2015-10-15

    Increasing understanding of the anatomy and physiology of neural structures has led to the development of surgical and percutaneous neurodestructive methods in order to target and destroy various components of afferent nociceptive pathways. The dorsal root ganglia and in particular the ganglia of the autonomous nervous system are targets for radiological interventions. The autonomous nervous system is responsible for the regulation of organ functions, sweating, visceral and blood vessel-associated pain. Ganglia of the sympathetic chain and non-myelinized autonomous nerves can be irreversibly destroyed by chemical and thermal ablation. Computed tomography (CT)-guided sympathetic nerve blocks are well established interventional radiological procedures which lead to vasodilatation, reduction of sweating and reduction of pain associated with the autonomous nervous system. Sympathetic blocks are applied for the treatment of various vascular diseases including critical limb ischemia. Other indications for thoracic and lumbar sympathectomy include complex regional pain syndrome (CRPS), chronic tumor associated pain and hyperhidrosis. Neurolysis of the celiac plexus is an effective palliative pain treatment particularly in patients suffering from pancreatic cancer. Percutaneous dorsal root ganglion rhizotomy can be performed in selected patients with radicular pain that is resistant to conventional pharmacological and interventional treatment. (orig.) [German] Anatomische und physiologische Kenntnisse ueber die Funktion von Schmerzbahnen fuehrten zur Entwicklung chirurgischer und perkutaner destruktiver Verfahren, um einzelne Komponenten afferenter Schmerzbahnen anzusteuern bzw. auszuschalten. Neben anderen nervalen Strukturen gelten Hinterstrangganglien und insbesondere die Ganglien des autonomen Nervensystems als Ziele fuer radiologische Interventionen. Das vegetative Nervensystem ist fuer die Organfunktion durch Regulation des Gefaesstonus und fuer die Leitung viszeraler und gefaessassoziierter Schmerzen verantwortlich. Durch die CT-gezielte Sympathikolyse mit Alkohol oder durch Thermoablation mit Radiofrequenz werden Ganglien des sympathischen Grenzstrangs bzw. nichtmyelinisierte Nervenbahnen irreversibel zerstoert. Die Blockade des Sympathikus ist ein anerkanntes interventionell-radiologisches Verfahren und fuehrt zu einer Aufhebung der vasokonstriktorischen Wirkung, einer verminderten Schweisssekretion sowie einer Reduktion von Schmerzen, die mit dem vegetativen Nervensystem assoziiert sind. Die Sympathikolyse eignet sich zur Behandlung verschiedener vaskulaerer Erkrankungen, insbesondere der kritischen Extremitaetenischaemie. Zusaetzlich kommt die thorakale und lumbale Sympathikusblockade beim komplexen regionalen Schmerzsyndrom (CRPS), bei tumorbedingten chronischen Schmerzen und bei der Hyperhidrose zum Einsatz. Die Plexus-coeliacus-Blockade ist eine effektive palliative Schmerztherapie und wird insbesondere fuer Patienten mit Pankreaskarzinom eingesetzt. Die perkutane Rhizotomie des Hinterwurzelganglions kann bei ansonsten austherapierten Patienten mit radikulaeren Schmerzen eingesetzt werden. (orig.)

  19. Reductie van complexiteit binnen IFRS: wie is aan zet?

    NARCIS (Netherlands)

    Brouwer, A.; Tahtah, J.

    2012-01-01

    IFRS heeft bijgedragen aan de transparantie van financiële verslaggeving en efficiënte werking van kapitaalmarkten. IFRS wordt echter ook regelmatig bekritiseerd vanwege haar complexiteit. Deze complexiteit ondermijnt de begrijpelijkheid van financiële verslaggeving. In dit artikel gaan we in op een

  20. Mating disruption with low density diffusers for the management of oriental fruit moths (Lepidoptera: Tortricidae in apple orchards under subtropical climate in southern Brazil

    Directory of Open Access Journals (Sweden)

    Lino Bittencourt Monteiro

    2013-12-01

    Full Text Available The oriental fruit moth, Grapholita molesta Busck, and fruit flies, Anastrepha fraterculus L., are the important apple pests under Subtropical climate in Southern Brazil, and control is normally accomplished with insecticides. An alternative strategy for the control of G. molesta is mating disruption, through the use of pheromones. Mating disruption strategies using a low density of dispensers (20 per hectare were tested in comparison with conventional pesticides for control of G. molesta in commercial Gala apple orchards in Fraiburgo, SC, for a period of five years. The average field efficiency period of mating disruption formulation over five years was 113 days. In this period the mating interruption index on mating disruption plots was 84.8% over five years. Damage to Gala apples by oriental moth larvae was low (<0.1% in mating disruption plots but did not differ from conventional plots, except in the third year. The use of mating disruption allowed for an average reduction of 5.2 insecticide treatments per year in Gala orchards during field efficiency period. It was necessary to apply 1.0 and 1.2 applications of insecticide to control of G. molesta and A. fraterculus, respectively. Mating disruption with a low density of diffusers proved to be an effective alternative to conventional methods for control of G. molesta in Gala apple orchards in subtropical climate in southern Brazil.

  1. Variação na infestação de mosca-das-frutas (Diptera: Tephritidae e parasitismo em diferentes fases de frutificação em mirtaceas nativas no Rio Grande do Sul

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    Diogo Ricardo Pereira Rêgo

    2013-07-01

    Abstract. The fruit fly Anastrepha fraterculus (Wiedemann (Diptera: Tephritidae is an important pest of fruit production in Rio Grande do Sul. A. fraterculus presents native and exotic hosts, according to fruiting time. The objective of this study was compare infestation rate, the intensity of infestation of fruit fly and parasitism in four native Myrtaceae. The fruits were stored under ambient conditions until flies or parasitoids emergence. These evaluation were made in fruits collected from the canopy and soil, and between stages of ripening of the canopy. The largest infestation rate of fruit fly occurred in guava (89.5% and the lowest in feijoa (67%. The intensity of infestation per fruit was highest in guava (17.33 and lowest in red strawberry guava (1.62. The highest rate of puparia per gram of fruit was obtained in the feijoa (0.50 and the lowest in guava (0.22. The highest parasitism rate was in feijoa (21.40% and the lowest in yellow strawberry guava (2.81%. A greater occurrence of this pest in guava and feijoa revealing highest attractiveness in these hosts. Feijoa is a repository for native parasitodes species.

  2. Biological Control of Tephritid Fruit Flies in Argentina: Historical Review, Current Status, and Future Trends for Developing a Parasitoid Mass-Release Program.

    Science.gov (United States)

    Ovruski, Sergio M; Schliserman, Pablo

    2012-09-14

    In Argentina there are two tephritid fruit fly species of major economic and quarantine importance: the exotic Ceratitis capitata that originated from Southeast Africa and the native Anastrepha fraterculus. In recent years, the use of fruit fly parasitoids as biocontrol agents has received renewed attention. This increasing interest has recently led to the establishment of a program for the mass rearing of five million Diachasmimorpha longicaudata parasitoids per week in the BioPlanta San Juan facility, San Juan, Argentina. The first augmentative releases of D. longicaudata in Argentina are currently occurring on commercial fig crops in rural areas of San Juan as part of an integrated fruit fly management program on an area-wide basis. In this context, research is ongoing to assess the suitability of indigenous parasitoid species for successful mass rearing on larvae of either C. capitata or A. fraterculus. The purpose of this article is to provide a historical overview of the biological control of the fruit fly in Argentina, report on the strategies currently used in Argentina, present information on native parasitoids as potential biocontrol agents, and discuss the establishment of a long-term fruit fly biological control program, including augmentative and conservation modalities, in Argentina's various fruit growing regions.

  3. Biological Control of Tephritid Fruit Flies in Argentina: Historical Review, Current Status, and Future Trends for Developing a Parasitoid Mass-Release Program

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    Sergio M. Ovruski

    2012-09-01

    Full Text Available In Argentina there are two tephritid fruit fly species of major economic and quarantine importance: the exotic Ceratitis capitata that originated from Southeast Africa and the native Anastrepha fraterculus. In recent years, the use of fruit fly parasitoids as biocontrol agents has received renewed attention. This increasing interest has recently led to the establishment of a program for the mass rearing of five million Diachasmimorpha longicaudata parasitoids per week in the BioPlanta San Juan facility, San Juan, Argentina. The first augmentative releases of D. longicaudata in Argentina are currently occurring on commercial fig crops in rural areas of San Juan as part of an integrated fruit fly management program on an area-wide basis. In this context, research is ongoing to assess the suitability of indigenous parasitoid species for successful mass rearing on larvae of either C. capitata or A. fraterculus. The purpose of this article is to provide a historical overview of the biological control of the fruit fly in Argentina, report on the strategies currently used in Argentina, present information on native parasitoids as potential biocontrol agents, and discuss the establishment of a long-term fruit fly biological control program, including augmentative and conservation modalities, in Argentina’s various fruit growing regions.

  4. Yeast derivatives and wheat germ in the adult diet modulates fecundity in a tephritid pest.

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    Goane, L; Pereyra, P M; Castro, F; Ruiz, M J; Juárez, M L; Segura, D F; Vera, M T

    2018-05-22

    Anastrepha fraterculus (Wiedemann), a pest of great economic importance in South America, needs urgently to be controlled by environmentally friendly methods such as the sterile insect technique for which mass rearing of insects is required. Because oogenesis takes place during the adult stage, mass-rearing facilities should provide the females a diet that maximizes egg production at the lowest cost. Accordingly, we investigated the effect of artificial protein sources in the adult diet (yeast derivatives of different cost but with similar amino acids profiles, and the addition of wheat germ) on fecundity. Additionally, we evaluated different ratios of yeast derivatives or wheat germ on ovary maturation, fecundity, and fertility as well as their association with the nutrient content of females. Females fed hydrolyzed yeast and yeast extract attained the highest fecundity level, and those fed brewer's yeast the lowest. Reducing the amount of hydrolyzed yeast, an expensive protein source, in the diet negatively affected fecundity and ovary maturation. Increasing the amount of brewer's yeast, a low-cost protein source, did not favor fecundity. The addition of wheat germ in the adult diet improved fecundity regardless of the yeast derivate considered. Percentage of egg hatch was not affected by the diet. Nutrient content of A. fraterculus females varied according to the adult diet provided and mating status. Our findings provide novel baseline information to understand the role of nutrition on reproductive performance of A. fraterculus females and are discussed in the context of resource allocation. They also provide valuable advances in the search for cost-effective adult diets at fruit fly mass rearing facilities.

  5. Wie kann der adäquate ärztliche Umgang mit Emotionen im Medizinstudium vermittelt werden? Ein Erfahrungsbericht aus dem Strang "Ärztliche Interaktion" im Modellstudiengang Medizin der Ruhr-Universität Bochum [How to teach the adequate handling of emotions during medical studies? A field report on "Medical Interaction" as part of a problem-based curriculum at the Ruhr University in Bochum, Germany

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    Rusche, Herbert

    2009-08-01

    Full Text Available [english] Handling strong emotions like sorrow, anger, shame, and fear in patients with somatic disease in an adequate way is a key issue for the future physician. Up to now, this aspect of the doctor?patient relationship has played a minor role in medical studies. To address this shortcoming, the handling of emotions is the focus of the third semester in the “Medical Interaction” course of the Modellstudiengang Medizin, the problem-based track of the medical faculty in Bochum, Germany. The course presented is given by the Department of General Medicine.The main objective is the recognition and correct interpretation of patients’ emotional expressions. The course is composed of six modules (one introductory and one for each leading affect. The main teaching methods are realistic role plays in a small group setting with video feedback, whereby one main requirement is that each student plays the role of both the patient and the doctor. Each session is introduced and analyzed by a general practitioner experienced in psychosomatic medicine. Evaluation of the course has shown a high acceptance among students. This motivates us to conduct a public discussion on the possibilities of applying this concept in other medical studies as well. [german] Der adäquate Umgang mit Emotionen wie Trauer, Wut, Scham und Angst bei Patienten mit körperlichen Erkrankungen spielt für den werdenden Arzt eine Schlüsselrolle. Dieser Aspekt der Arzt-Patient-Beziehung wird allerdings im Medizinstudium bislang wenig berücksichtigt. Aus diesem Grunde wird der Umgang mit Emotionen im dritten Semester des Stranges „ärztliche Interaktion“ im Modellstudiengang Medizin der Ruhr-Universität Bochum thematisiert. Der vorgestellte Kurs wird von der Abteilung für Allgemeinmedizin durchgeführt.Zielsetzung ist die Verbesserung der emotionalen und kommunikativen Kompetenz des Studierenden. Um dies zu erreichen soll dem eigenen emotionalen Erleben in der Arzt

  6. Wie kommt mehr "Familie" in die "Work-Life-Balance"? – Familienorientierung in der medizinischen Aus-, Weiterbildung und Berufstätigkeit [How to add more "Family" to the Work-Life-Balance? – Family Friendliness in Medical Under- and Postgraduate Studies and the Workplace

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    De Ridder, Daniela

    2012-04-01

    Wettbewerb um exzellente Köpfe müssen sich schon vor dem Hintergrund des demographischen Wandels diesen für sie zum Teil noch neuen Herausforderungen stellen. Hohe Studienabbruchquoten unter Studierenden mit Kindern, steigender Mediziner(innenmangel und deutliche Abwanderungsraten, hohe Kinderlosigkeit unter Akademiker(innen erscheinen dabei als Indikatoren für einen dringenden Handlungsbedarf hin zu einer familienorientierten Hochschul- und Fakultätsstrategie.Wie aber können medizinische Fakultäten, Kliniken und (Lehr-Krankenhäuser ein familienorientiertes Profil gewinnen? Welche Akteurinnen und Akteure, welche Handlungsfelder des Hochschulmanagements sind für die Leitungs- und Entscheidungsstrukturen relevant? Welche exemplarischen Maßnahmen für eine familiengerechtere Gestaltung des Studien- und Arbeitsortes „Medizin“ könnten Erfolg versprechend sein? Die Unterrepräsentanz von Frauen beim wissenschaftlichen Nachwuchs stellt darüber hinaus eine zusätzliche Herausforderung dar, für die eine innovative Hochschulpolitik weitere Maßnahmen entwickeln sollte, um zukunftsfähig zu sein. Nachwuchsförderungsstrategien und Familienorientierung sind demnach entscheidende Faktoren für eine zukunftsorientierte Hochschulpolitik. Diese Faktoren sollten deshalb als Führungsstrategien begriffen werden, um Maßnahmen einzuleiten, die das Profil der Hochschule dahingehend (umgestalten. Voraussetzung für eine erfolgreiche Implementierung ist dabei ein holistisches Konzept, das zu grundlegenden Reformen der Hochschulstrukturen führt, die im Folgenden skizziert und anhand von Beispielen illustriert werden sollen.

  7. Wie wichtig ist der Unterricht in Medizinethik und Medizingeschichte im Medizinstudium? Eine empirische Studie zu den Einschätzungen Studierender [How Important is Medical Ethics and History of Medicine Teaching in the Medical Curriculum? An Empirical Approach towards Students' Views

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    Schulz, Stefan

    2012-02-01

    negative impact. Therefore the teaching of GTE should already begin in the 1 semester. The teaching of GTE must take into account that even right at the start of their studies, students judge medical ethics and the history of medicine differently.[german] Zielsetzung: Es wurde untersucht, wie Studierende zu Beginn und im Verlauf ihres Studiums den Unterricht in Medizinethik und Medizingeschichte einschätzen und welchen Einfluss der durchgeführte bzw. fehlende fachspezifische Unterricht in Geschichte, Theorie und Ethik der Medizin (GTE auf die Wertschätzung der Fächer hat.Methodik: Befragt wurden im WS 2005/6 insgesamt 533 Studierende des 1. und 5. Fachsemesters aus dem Bochumer Modell- (GTE-Unterricht ab dem 1. Fachsemester und Regelstudiengang (GTE-Unterricht im 5./6. Fachsemester. Befragt wurde jeweils vor und nach dem 1. bzw. 5. oder 6. Semester. Wir fragten nach der Einschätzung der Bedeutung der Lehre in Medizinethik und Medizingeschichte für die Studierenden, nach der Bedeutung der Fächer für den Arzt sowie nach ihrer Lehr- und Prüfbarkeit (Likert Skala von -2 (stimme überhaupt nicht zu bis +2 (stimme völlig zu.Ergebnisse: 331 Fragebogenpaare wurden in die Studie einbezogen. Zwischen den Studierenden der beiden Studiengänge fanden sich zu Beginn des 1. Semesters keine signifikanten Unterschiede. Die Einschätzungen der Medizinethik und der Medizingeschichte unterschieden sich zu Beginn des Studiums jedoch signifikant: Die Bedeutung der Medizinethik für die eigene Person und für den Arzt wurde als sehr hoch eingeschätzt, deutlich schlechter ihre Lehr- und Prüfbarkeit. Für die Medizingeschichte waren die Ergebnisse genau entgegengesetzt.Durch den GTE-Unterricht verbesserten sich dann in beiden Studiengängen die Einschätzungen in den vorher weniger gut bewerteten Items. Fehlender Unterricht führte zur Verschlechterung der Einschätzung beider Fächer in den vorher gut bewerteten Items.Schlussfolgerung: Im Einklang mit der Literatur unterst

  8. Custos variáveis de produção de Diachasmimorpha longicaudata (Ashmead para controle de moscas-das-frutas = Variable costs of production for Diachasmimorpha longicaudata to control the fruit flies

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    Maria Gisely Camargos

    2017-04-01

    Full Text Available O controle biológico aplicado consiste em liberações em massa de predadores ou parasitoides após a criação laboratorial em larga escala. Avaliar o custo de produção do parasitoide Diachasmimorpha longicaudata para controle biológico de moscas-das-frutas irá fornecer uma ferramenta capaz de auxiliar o planejamento, controle e uma forma de apoiar as empresas quanto as suas tomadas de decisão. Este trabalho teve por objetivo identificar e analisar os custos variáveis de produção do parasitoideD. longicaudata, criado em larvas de Anastrepha fraterculus utilizando a ferramenta de Custeio Baseado em Atividade [ABC]. Foi acompanhado o processo produtivo para obter o custo variável total de produção em laboratório de pesquisa e biofábrica de inimigos naturais, localizado em Piracicaba, São Paulo. A capacidade de produção de pupas de A. fraterculus parasitadas por D. longicaudata é de um milhão por semana nesse laboratório, sendo que um milhão de pupas representa 34 L, e um mL contém aproximadamente 30 pupas. O custo variável de produção para produzir um milhão de pupas parasitadas por semana foi de R$ 5.919,65 ou R$0,0059 por pupa. O custo com mão de obra representa 57% do custo total, enquanto o custo com materiais representa 43%. A tomada de decisão do produtor em relação ao controle biológico utilizando D. longicaudatadependerá de estudos prévios sobre o parasitoide e cultura pretendida. = Applied biological control consists in the mass liberation of laboratory reared predators or parasitoids. Evaluating the variable cost of production of the fruit flies parasitoid Diachasmimorpha longicaudata for biological control will provide a tool to assist the planning, control and a way to support businesses as their decision-making. This study aims to identify and analyze the variable costs productionof D. longicaudata, created in larvas of Anastrepha fraterculus using the Activity-Based Costing Tool [ABC]. The total

  9. First register of fruit flies (Diptera: Tephritidae in star fruit in Teresina, Altos and Parnaiba, state of Piaui, Brazil/ Primeiro registro de moscas-das-frutas (Diptera: Tephritidae em carambola nos municípios de Teresina, Altos e Parnaíba no estado do Piauí

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    Almerinda Amélia Rodrigues Araújo Soares

    2007-08-01

    Full Text Available The present work aims to register the occurrence of the fruit flies associated to star fruit (Averrhoa carambola L. in three counties of the state of Piaui, as well as to determine the frequency and the index of infestation of these insects. The fruits had been collected during the months of August and September 2005, and had been placed in plastic trays with sterilized soil, stored in metal cages, and left in environmental temperature at the laboratory. Until emergency, the adults had been kept in bottles with alcohol 70% and later identified in the species level. The biggest index of infestation (flies/fruit of C. capitata has occurred in the county of Altos (3.66, followed by Teresina and Parnaiba that had presented index of infestation of 2.18 and 0.016, respectively. C. capitata was the most frequent species in all the counties, presenting frequencies of 100%, 96.5%, and 100% in Teresina, Altos and Parnaiba, respectively. Ceratitis capitata is registered for the first time in star fruit in Teresina, Altos and Parnaiba, state of the Piaui. Anastrepha fraterculus is registered for the first time in the county of Altos. A. fraterculus and C. capitata occur simultaneously in star fruits.O presente trabalho visou conhecer as espécies de moscas-das-frutas associadas à carambola (Averrhoa carambola L. em três municípios do Estado do Piauí, bem como determinar a freqüência e o índice de infestação desses insetos. Os frutos foram coletados durante os meses de agosto e setembro de 2005, colocados em bandejas plásticas com solo esterilizado, armazenados em gaiolas metálicas e deixados em temperatura ambiente no laboratório. Até a emergência dos adultos, estes foram acondicionados em frascos contendo álcool 70% e posteriormente identificados em nível de espécie. O maior índice de infestação (moscas/fruto de C. capitata ocorreu no município de Altos (3,66, seguido pelos municípios de Teresina e Parnaíba que apresentaram

  10. Introducción y producción en laboratorio de Diachasmimorpha tryon i y Diachasmimorpha longicaudata (Hymenoptera: Braconidae para el control biológico de Ceratitis capitata (Diptera: Tephritidae en la Argentina Introduction and laboratory production of Diachasmimorpha tryoni and Diachasmimorpha longicaudata (Hymenoptera: Braconidae for the biological control of Ceratitis capitata (Diptera: Tephritidae in Argentina

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    Sergio M. Ovruski

    2003-12-01

    Full Text Available Con el propósito de reanudar la utilización de enemigos naturales contra la especie exótica Ceratitis capitata (Wiedemann, fueron introducidos a la Argentina en 1999 los agentes de control biológico Diachasmimorpha tryoni (Cameron y Diachasmimorpha longicaudata (Ashmead, dos endoparasitoides de larvas de tefrítidos. Por este motivo, en este trabajo se describen los procedimientos de cría en laboratorio del huésped y de ambas especies de parasitoides y, se presentan y discuten los resultados de un año de producción de D. tryoni y D. longicaudata a mediana escala (enero-diciembre/2000. Se realizó un análisis comparativo de los datos obtenidos sobre la producción de descendientes, proporción sexual, porcentaje de parasitismo y viabilidad de puparios por jaula de cría durante 15 generaciones entre ambas especies de parasitoides exóticos, utilizando como huésped larvas de C. capitata del tercer estadio de siete días de edad. Además, se discuten las posibilidades para implementar el control biológico aumentativo contra C. capitata y Anastrepha fraterculus (Wiedemann en el país.The biocontrol agents Diachasmimorpha tryoni (Cameron and Diachasmimorpha longicaudata (Ashmead, two endoparasitoids of fruit fly larvae, were introduced to Argentina in 1999 with the purpose of renewing the employment of natural enemies against Ceratitis capitata (Wiedemann. For this reason, the general procedure and maintenance of the host and parasitoids rearing in the laboratory are described, and the results of one year insectary production (January-December/2000 of both D. tryoni and D. longicaudata are discussed. Data are presented of the progeny production, offpring sex ratio, host parasitism percentage, and pupal viability per parasitoid rearing cage during 15 generations of D. longicaudata and D. tryoni reared using late third instar larvae of C. capitata. New perspectives are discussed on the establishment of a biological control program for C

  11. Apple biological and physiological disorders in the orchard and in postharvest according to production system Distúrbios biológicos e fisiológicos no pomar e na pós-colheita de maçãs em função do sistema de produção

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    Carlos Roberto Martins

    2013-03-01

    Full Text Available The study aimed to evaluate the incidence of biological and physiological disorders in the field and postharvested apples cvs. Gala, Fuji and Catarina grown in four production systems: conventional, organic transition, integrated and organic. Apples were evaluated for damages related to biological and physiological disorders in the orchard and after harvest. The greatest damages were attributed to pests, especially Anastrepha fraterculus in the organic system and Grapholita molesta in the organic transition. Apples produced in organic orchards had higher damage levels caused by postharvest physiological disorders than those grown in other production systems. For apples becoming from organic orchards most of the damage was due to lenticels breakdown and degeneration ('Gala', and bitter pit ('Fuji' and 'Catarina'. The incidence of postharvest rot was not influenced by apple production system.O objetivo deste trabalho foi avaliar a ocorrência de distúrbios biológicos e fisiológicos, tanto em nível de campo como em pós-colheita, de maçãs 'Gala', 'Fuji' e 'Catarina', produzidas em pomares conduzidos em quatro sistemas de produção: convencional, transição convencional-orgânico, integrado e orgânico. As maçãs foram avaliadas quanto à presença de danos ocasionados por distúrbios biológicos e fisiológicos no pomar e em pós-colheita. Os maiores danos foram atribuídos às pragas, principalmente à Anastrepha fraterculus em sistema orgânico e à Grapholita molesta em sistema de transição convencional-orgânico. As maçãs produzidas em sistema orgânico tiveram maiores danos em pós-colheita ocasionados por distúrbios fisiológicos do que as dos demais sistemas de produção. Nas frutas produzidas em sistema orgânico, os danos, em sua maioria foram com degenerescência e depressão lenticelar para a cv. Gala, e bitter pit para as cvs. Fuji e Catarina. A incidência de podridões pós-colheita não foi influenciada pelo sistema de

  12. Danos de moscas-das-frutas (Diptera, Tephritidae em citros, manejados no sistema orgânico de produção

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    Fernando Felisberto da Silva

    2014-10-01

    Full Text Available As moscas-das-frutas são as principais pragas da fruticultura mundial. Consideradas chaves para a produção de citros, torna-se necessário o seu monitoramento, visando a evitar os danos diretos. O experimento teve como objetivos conhecer a variação populacional de Anastrepha fraterculus e a relação de sua população com danos em pomares orgânicos de Citrus sinensis, cultivar Céu e de C. sinensis x Citrus reticulata tangor 'Murcott'. Os dados foram coletados em 2003 e 2004 durante o período de maturação dos frutos, na região do vale do Caí, RS, Brasil. O número de moscas-das-frutas foi registrado, semanalmente, por meio de armadilhas McPhail, contendo suco de uva, a 25%. Danos aos frutos foram determinados pela razão entre frutos sadios e frutos danificados pela mosca. Registros meteorológicos de temperatura, umidade relativa e precipitação pluviométrica foram obtidos, em estação meteorológica distante 30 km das áreas experimentais. Verificou-se que, em condições ideais de precipitação pluvial, maiores foram as populações de A. fraterculus, espécie predominante na região. A população estimada capaz de causar danos aos frutos variou de acordo com o cultivar, sendo a laranjeira 'Céu' a mais susceptível. Os maiores picos populacionais ocorrem na fase de mudança de coloração dos frutos. Porém, na fase de maturação, as moscas causaram os maiores danos, dada a intolerância dos frutos ao ataque. Conclui-se que a infestação dos frutos de citros por A. fraterculus está relacionada com espécie e cultivar e com fatores climáticos, principalmente com a precipitação pluvial. O monitoramento constante da população de mosca-das-frutas é importante na determinação da infestação na colheita.

  13. Effects of acoustic waves on pupas of Ceratitis capitata. (Wied., 1824) (Diptera: Tephritidae); Efeitos das ondas acusticas em pupas de Ceratitis capitata. (Wied., 1824) (Diptera: Tephritidae)

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    Barros, Adilson Camilo de

    2007-07-01

    The aim of this research has been to investigate the hypothesis that acoustic waves would provoke a measurable effect on a population of fruit flies, a treatment denominated sonication. Ionizing radiation, the causative agent for the treatment designated by irradiation has been used as a reference, as long as its effects on living beings and particularly on insects are widely known. This research also enquiries into the possible effects of acoustic waves and gamma rays. The experiments of sonication were carried out in the Laboratory of Entomology of the Instituto Biologico de Sao Paulo. The experiments of radiation were carried out in the Centro de Tecnologia das Radiacoes - IPEN, located within the campus of the University of Sao Paulo. It has been employed a Gamma cell source model 220 with average activity of 757.069 {+-} 293.484 curies (Ci) and an average doses rate of 3.106 {+-} 0.245 kilo grays per hour (kGy/h). Levels applied to the sonication treatment, in hertz and kilo Hertz were: 0 Hz (control) ; 5.0 Hz; 10.0 Hz; 20.0 Hz; 40.0 Hz; 60.0 Hz; 80.0 Hz; 1.0 k Hz; 2.0 k Hz; 10.0 k Hz; 15.0 k Hz e 20.0 k Hz. Irradiation doses applied in Grays were: 5.0 Gy; 7.5 Gy; 10.0 Gy; 12.5 Gy; 15 Gy; 50 Gy; 100 Gy; 150 Gy and 200 Gy. It has been used an acoustic tube made of glass - 40.6 cm in length and 9.1 cm in diameter - and sinusoidal waves originated from three acoustic sources, with response in decibels, which sound intensity varied from 93.60 {+-} 1.51 dB to 123.96 {+-} 0.23 dB. Final results have pointed to evidences that would justify the rejection of null hypothesis H{sub 0}, to which the average of the treatments due to acoustic waves do not differ significantly from each other.(author)

  14. Uma nova hemogregarina no sangue de Bufo crucifer wied, 1821 do Brasil A new hemogregarine in the blood of Bufo crucifer wied, 1821 from Brazil

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    Maria Auxiliadora de Sousa

    1974-01-01

    Full Text Available A ocorrência de hemagregarinas no sangue dos sapos que examinamos (Bufo crucifer, B. marinus e Melanophryniscus moreirae revelou-se extremamente rara; apenas um exemplar de B. crucifer procedente de Manguinhos (Rio de Janeiro, Guanabara apresentou-se parasitado. As formas sanguíneas encontradas eram intra-eritrocitárias, medindo em média 10,8/ 3,6µ; não as identificamos como trofozoítos ou gametócitos e discutimos este fato. As hemácias parasitadas tinham dimensões normais, porém podiam ter o núcleo deslocado. Supomos ser esta a primeira referência a hemogregarinas neste hospedeiro. Não encontramos identidade entre as formas que descrevemos e aquelas referidas em outras espécies de sapos; fornecemos uma lista das hemogregarinas achadas nestes hospedeiros. Denominamos provisoriamente os parasitos que encontramos Haemogregarina "sensu lato", até que novos dados sobre seu ciclo evolutivo sejam conhecidos.The occurrence of hemogregarines in the blood of Brazilian toads that we have examined (Bufo crucifer, B. Marinus and Melanophryniscus moreirae has displayed very scarce; only one specimen of B. crucifer from Manguinhos (Rio de Janeiro, Guanabara was infected. The blood forms that we found were intraerythrocytic, averaging 10,8 by 3,6µ; we did not differenciate them as thophozoites or as gametocytes and we discuss this fact. The infected erythrocytes were not hypertrophied and their nucleus was normal and sometimes displaced. We think that it is the first reference to hemogregarines in this host. We did not evidence identity among the forms that we described and those reported in other species of toads; we give a list of hemogregarines found in those hosts. We provisorily named the parasites that we found Haemogregarina "sensu lato", until new data about their life cycle become known.

  15. IMPROVING MASS REARING TECHNOLOGY FOR SOUTH AMERICAN FRUIT FLY (DIPTERA:TEPHRITIDAE

    Directory of Open Access Journals (Sweden)

    Raimundo Braga Sobrinho

    2006-01-01

    Full Text Available Studies on availability of suitable and economic diets for adults and larvae of the South American fruit fly Anastrepha fraterculus (Wiedemann, 1830 were carried out at the Entomology Unit of the FAO/IAEA Agriculture and Biotechnology Laboratories in Seibersdorf, Austria with the aim to find the best diets to fit in a large scale mass rearing production. The best diet for adult was the combination of Hydrolysate Corn Protein + Yeast Hydrolysate Enzymatic + Sugar (3:1:3. This diet resulted in the highest numbers of egg/female/day, spermatozoid in the spermathecae, percentages of egg hatch, the lowest mortality rate of adults and the highest average mating duration compared with the standard adult diet based on Yeast Hydrolysate Enzymatic + Sugar (1:3. Among eleven larval diets tested, diets based on sugarcane and sugarbeet bagases plus 7% brewer yeast, 8% sugar, 0.2% sodium benzoate, 0.8% of hydrochloric acid and 60% water (adjusted, yielded the highest percentages of egg hatching, pupal recovery, pupal weight and adult emergence. There was no statistical difference with the standard larval diet based on wheat germ 3%, corncob 15%, corn flower 8%, brewer yeast 6%, sugar 8%, sodium benzoate 0.23%, hydrochloric acid 0.63%, nipagin 0.14% and water 59% (adjusted. The significant performance of these adult and larval diets open discussion for future researches on improvement of rearing techniques required for the establishment of sterile insect technique (SIT program focused on the South American fruit fly.

  16. Moscas frugívoras e seus parasitoides nos municípios de Pelotas e Capão do Leão, Rio Grande do Sul, Brasil Frugivorous flies and their parasitoids in the cities of Pelotas and Capão do Leão, Rio Grande do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Adrise Medeiros Nunes

    2012-01-01

    Full Text Available As moscas frugívoras (Tephritoidea são as principais pragas da fruticultura de clima temperado no Brasil. O objetivo do presente trabalho foi avaliar a infestação desses dípteros e a ocorrência de seus parasitoides em frutíferas nos municípios de Pelotas e Capão do Leão, localizados na região Sul, nas safras agrícolas de 2007/08 e 2008/09. Foram coletados frutos de araçazeiro-amarelo e vermelho (Psidium cattleianum Sabine, 1821, butiazeiro [Butia capitata (Mart. Becc., 1916], caquizeiro (Diospyros kaki Linnaeus, 1753, cerejeira-do-mato (Eugenia involucrata DC., 1828, goiabeira [Psidium guajava (Linnaeus, 1753], goiabeira-serrana [Acca sellowiana (Berg. Burret, 1941], nespereira [Eriobotrya japonica (Thunb. Lindley, 1822], pessegueiro [Prunus persicae (L. Batsch, 1801], pitangueira (Eugenia uniflora Linnaeus,1753 e uvalheira (Eugenia pyriformis Cambessèdes, 1832. Os frutos foram coletados e transportados para o laboratório, onde foram individualizados e determinados os seguintes parâmetros: índice de infestação das moscas, índice de parasitismo e frequência de indivíduos por espécie de parasitoide. Foram constatadas duas espécies de Tephritidae, Anastrepha fraterculus (Wiedemann, 1830 (90,5% e Ceratitis capitata (Wiedemann, 1824 (9,5% e duas de Lonchaeidae, Neosilba zadolicha McAlpine & Steyskal, 1982 (87,8% e uma espécie ainda não descrita, referida como Neosilba n. sp. 3 (12,2%. Anastrepha fraterculus é a espécie mais abundante nos dois municípios, sendo constatada na maioria das frutíferas coletadas. Caquizeiro e goiabeira foram os hospedeiros que apresentaram o maior índice de infestação por C. capitata. Quanto às espécies de Neosilba, a maior infestação ocorreu em frutos de goiabeira-serrana. Dos parasitoides emergidos, foram identificadas três espécies, sendo duas de Braconidae, Doryctobracon areolatus (Szépligeti, 1911 (52,6% e Opius bellus (Gahan, 1930 (27,5% e uma espécie de Figitidae, Aganaspis

  17. Evaluation of the quality and shelf life of gamma irradiated blueberries by quarantine purposes

    Science.gov (United States)

    Lires, Carla M. L.; Docters, Andrea; Horak, Celina I.

    2018-02-01

    Fresh blueberries (Vaccinium spp.) are considered one of the richest sources of phenolic compounds and are appreciated for their high antioxidant capacity. But they are hosts in Argentina of the quarantine pests Ceratitis capitata and Anastrepha fraterculus, and have to be treated to avoid its spreading. Irradiation is being introduced in the Agricultural World trade, increasing exponentially on the last years. In order to guarantee the success of this process, it is required previous to the rutinary treatment, to define the irradiation dose range to be applied. The minimum dose for these pests has been already approved in the IPPC standard 28. The maximum dose depends on the tolerance of the fruit cultivars, maturity, pre-harvest conditions, harvest time, storage conditions, and interactions among these factors. The postharvest quality of Argentina´s blueberry treated with irradiation doses of 150 (generic quarantine dose used for fruit flies) and 300 Gy (to evaluate tolerance) was evaluated. The studies included blueberries from different harvest seasons 2009-2012). Misty, O'Neal and Emeral varieties were chosen, because they represent the biggest volume of exported blueberry from Argentina. The results indicated that irradiation at 150 Gy and 300 Gy did not significantly affect the postharvest quality and slightly improved shelf life of the different blueberries varieties. Therefore, it is possible to use irradiation as an alternative quarantine treatment for Argentina´s blueberries, establishing a dose range appropriate to be applied on a commercial irradiation facility.

  18. Response of Anastrepha suspensa to liquid protein baits and synthetic lure formulations

    International Nuclear Information System (INIS)

    Epsky, Nancy D.; Kendra, Paul E.; Heath, Robert R.

    2006-01-01

    Traps baited with AAPt captured more A. suspensa than traps baited with ABPt even when the ammonia release rates were similar. Reducing dosage of ammonia by 50% of the commercially available AA lure slightly increased female capture, but reducing dosage to 25% tended to decrease female capture. The 5% CPH/3% borax bait captured the same number of flies as TYB, and was more effective than 10% CPH/3% borax. Further decreasing the amount of borax added to CPH may improve its effectiveness. As has been observed in field tests, fresh TYB captures more A. suspensa than fresh Nulure/borax but this difference decreases as the bait solutions age. EAG analysis indicates that volatiles from fresh Nulure/ borax elicit a higher antennal response than TYB, but this difference decreases as the TYB solution ages. Chemical analysis will be needed to determine the nature of reduced capture by fresh Nulure/borax and to identify additional attractive chemicals emitted by these protein baits. (author)

  19. Response of Anastrepha suspensa to liquid protein baits and synthetic lure formulations

    Energy Technology Data Exchange (ETDEWEB)

    Epsky, Nancy D.; Kendra, Paul E.; Heath, Robert R., E-mail: Nancy.Epsky@ars.usda.go, E-mail: Paul.Kendra@ars.usda.go, E-mail: Bob.Heath@ars.usda.go [U.S. Department of Agriculture (USDA/ARS/SHRS), Miami, FL (United States). Agricultural Research Service. Subtropical Horticulture Research Station

    2006-07-01

    Traps baited with AAPt captured more A. suspensa than traps baited with ABPt even when the ammonia release rates were similar. Reducing dosage of ammonia by 50% of the commercially available AA lure slightly increased female capture, but reducing dosage to 25% tended to decrease female capture. The 5% CPH/3% borax bait captured the same number of flies as TYB, and was more effective than 10% CPH/3% borax. Further decreasing the amount of borax added to CPH may improve its effectiveness. As has been observed in field tests, fresh TYB captures more A. suspensa than fresh Nulure/borax but this difference decreases as the bait solutions age. EAG analysis indicates that volatiles from fresh Nulure/ borax elicit a higher antennal response than TYB, but this difference decreases as the TYB solution ages. Chemical analysis will be needed to determine the nature of reduced capture by fresh Nulure/borax and to identify additional attractive chemicals emitted by these protein baits. (author)

  20. Contribución al estudio de las moscas anastrephas en colombia.

    OpenAIRE

    González Mendoza, Rafael

    2012-01-01

    1. Colombia tiene amplias posibilidades de desarrollar una industria frutícola floreciente dadas las excepcionales condiciones de ubicación geográfica, diversidad de climas y de suelos. 2. La deficiente producción frutera actual es el resultado de una reunión de factores adversos, entre los que resalta el desconocimiento de los problemas científicos que afectan a dicha industria. En este aspecto, los problemas fitosanitarios, abandonados y faltos de investigación, ocupan lugar pre...

  1. ENTOMOFAUNA ASSOCIADA AOS FRUTOS DO BACUPARI, Salacia folia (MART. PEYR, NOS CERRADOS DO BRASIL CENTRAL INSECTS ASSOCIED WITH BACUPARI FRUIT, Salacia crassifolia (Mart. PEYR, IN THE SAVANNAHS OF CENTRAL BRAZIL

    Directory of Open Access Journals (Sweden)

    Juracy Rocha Braga Filho

    2007-09-01

    Full Text Available

    O bacupari, Salacia crassifolia (Mart. Peyr, (Hippocrateaceae é uma frutífera nativa da região dos cerrados, utilizada pela fauna e também pela população da região, embora seus frutos sejam muito atacados pelas moscas-das-frutas, e por isso seu consumo fica limitado. De polpa branca à alaranjada, de sabor levemente ácido e muito agradável os frutos dessa espécie podem ser consumidos ao natural ou na forma de sucos. Neste trabalho apresenta-se um levantamento da entomofauna associada aos frutos do bacupari, coletados em 11 municípios da região dos cerrados no Estado de Goiás, no período de setembro de 1995 a dezembro de 1999. No Laboratório de Entomologia da Escola de Agronomia da Universidade Federal de Goiás, esses frutos foram, inicialmente, contados e pesados e, posteriormente, acondicionados em caixas de polipropileno com areia úmida para obtenção de pupários e insetos adultos. Tephritidae foi a família mais freqüente nos frutos do bacupari, com 54,22% dos insetos coletados. Nessa família foram registradas as espécies Anastrepha sp. (espécie nova em fase de descrição, A. zenildae, A. obliqua, A. fraterculus, A. sororcula e A. serpentina. Na família Lonchaeidae foi coletada Neosilba sp., em Muscidae, Atherigona orientalis e espécimes da família Oititidae. Dessas moscas foram obtidos os parasitóides Doryctobracon sp. (espécie nova, D. areolatus, Dicerataspis flavipes, Lopheucoila anastrephae, Aganaspis nordlanderi e A. pelleranoi. Foram coletados isoladamente no mesmo fruto exemplares de Anastrepha sp. e Lonchaeidae e Anastrepha sp. e A. zenildae

  2. Genetic sexing of the Mediterranean fruit fly, Ceratitis capitata (Wied.), in Hawaii: Problems and prospects

    International Nuclear Information System (INIS)

    McInnis, D.O.; Tam, S.Y.T.; Grace, C.; Haymer, D.; Thanaphum, S.

    1990-01-01

    Research is continuing towards the ultimate goal of developing an efficient system of separating the sexes of the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann). The authors are evaluating existing pupal colour sexing strains, as well as the potential of genetic engineering in creating a strain with useful genetic sexing properties. Collaborative research is under way between the United States Department of Agriculture/Agricultural Research Service (Honolulu) and the University of Hawaii (D. Haymer) regarding molecular approaches to the problem. Two pupal colour sexing strains are being compared: one of pure European stock and one backcross Hawaiian strain derived from the former. Results are presented for laboratory viability and quality parameters between the two strains, and further comparisons are made for behaviour in the field, including mating cage and free release assays. To date, the results indicate that the Hawaiianized strain is very competitive with normal (non-translocated) strains, while the pure foreign strain performs at a substandard level in Hawaii. After three years and over 25,000 embryos injected, there is still no evidence for genomic transformation of the medfly using Drosophila p elements. On the basis of positive evidence from a recently developed assay with the oriental fruit fly, Dacus dorsalis, microinjections with this species have been initiated. In the medfly, however, there is evidence for both apparent cytoplasmic inheritance of the neomycin resistance gene and bona fide transient expression of this gene. Currently being investigated are an alternative potential gene transfer system, concatemerized linear DNA of the neomycin structural gene, and metallothionein gene resistance as an alternative to neomycin resistance. Long range research has also been initiated to search for potential transposable vectors present in tephritids themselves. (author). 9 refs, 4 tabs

  3. Alcohols as discriminating agents for genetic sexing in the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Riva Francos, M.E.

    1990-01-01

    The locus of the alcohol dehydrogenase (ADH) has been used to develop a genetic sexing mechanism in the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann). Previous work (1982-1984) has led to the isolation of a translocation linking a null mutant of this locus to the Y chromosome of the males. This strain, T-128, together with others showing different ADH electrophoretic patterns, have been assayed for their resistance to alcohols, such as allyl-alcohol, pentynol, ethanol and 2-propanol. The strains carrying the T-128 translocation show a differential, sex dependent survival to some of these alcohols. Part of this work is still in progress. The mutagenic ethyl methanesulphate (EMS) is being used to induce new ADH null mutants using the strain T-128 as a marker. Several hundred females have been treated with 0.04% EMS and then outcrossed to T-128 males. Their progeny is put through selective larval medium (0.08% allyl-alcohol) and the surviving F 1 individuals and subsequent F 2 are being analysed. Population studies have shown that the genetic sexing strain, T-128, is a double translocation with complete linkage between the Adh N allele (chromosome 2), and the Y chromosome, and incomplete linkage of the Y with the wild type allele of the apricot eye locus (ap + ) of chromosome 4. (author). 40 refs, 4 figs, 12 tabs

  4. Two new pupal sexing strains in the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Zapater, M.

    1990-01-01

    A genetic sexing system in the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann), is urgently required in order to reduce the costs of mass rearing and to prevent punctures in fruit made by the ovipositors of sterilized females. Two genetic sexing strains, T(Y,5)122; T:Y(wp), white pupae, and T(Y,3,5)11; T:Y(dp + wp + ), were isolated and studied in connection with their possible use in a mass rearing programme. Both strains have males emerging from wild type brown pupae and females emerging from mutant pupae; they are stable up to generation 22. The strain T(Y,5)122 has a translocation linking the Y chromosome with the autosome carrying the wp locus. The strain T(Y,3,5)11 has a translocation linking the Y chromosome and the two chromosomes carrying the wp and the dp loci. The egg fertility of the strain T(Y,5)122 was 52% and that of T(Y,3,5)11 was 48%. Larval survival of the latter line was 79%. The technical advantages of these strains was discussed in this paper. The strain T(Y,4)116; T:Y(ap + ), apricot eye, is characterized by wild type males and apricot eye females, as well as apricot eye sterile males. A model explaining the appearance of these ap males is proposed. Isolation and preliminary fertility studies of six sex linked multiple translocations are presented. Each of these strains has three translocations involving the chromosomes Y, 3, 4 and 5. (author). 13 refs, 4 tabs

  5. Wie 'Haar' zu 'Maus' wird: Geschlechtsbezogene pronominale Referenz im Thailändischen

    Directory of Open Access Journals (Sweden)

    Attaviriyanupap, Korakoch

    2004-01-01

    Full Text Available The use of gender-related personal pronouns is mostly found in different forms of third person singular (e. g. he/she/it in English or er/sie/es in German. In Thai, an isolate language without grammatical gender, the gender-specification can be observed in the use of first person singular pronominal reference. The selection of gender-related self-reference depends not only on sex but also on gender identity of the speaker. In this article, the complex system of pronominal reference in Thai language will be briefly introduced. After that, forms of self-reference used in the Thai film Iron Ladies are analyzed to show how the gender identity of speakers can influence their selection of pronominal reference.

  6. Ere wie ere toekomt : Een kritische analyse over de relatie tussen eer, geweld en gender

    NARCIS (Netherlands)

    Althoff, Martina

    2014-01-01

    Honour, violence and masculinity are closely linked in traditional criminology, and are combined with an ethnic profile of the offender. This article discusses the conclusion of this assumptions as ethnocentric, but also as a simplification of the gendered idea of honour. Beliefs about honour, which

  7. How warm was the year 2010? Background; Wie warm war das Jahr 2010? Hintergrund

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-05-06

    In the background paper under consideration, the Federal Environment Agency (Dessau-Rosslau, Federal Republic of Germany) reports on a global measurement of the surface air temperature in order to obtain a global mean temperature. The global mean temperature of the year 2010 is not very significant. The deviation of the global mean temperature of the year 2010 from the mean temperature in a recent, extended period of time is more significant. The long-term trend in the global mean temperature shows a progressive global warming. The year 2010 was the warmest calendar year with the largest amount of rainfall since the records began in the 19th century. The global mean surface air temperature was very slight above the average temperature of the previous record year 2005.

  8. Serbia’s attitude towards Albania during the period of Wilhelm Wied

    OpenAIRE

    Milazim Elshani

    2016-01-01

    This manuscript analyzes a distinctive period of Albanian history, that after the Balkan Wars and Conference of Ambassadors in London, a period of external political influences with many different interests to implement or prevent the development of the newly created Albanian state. In this context the article focuses in the attitude of Serbia towards Albania, with Serbia’s aim to disable the consolidation of the Albanian state. It tried to influence in the political circumstances regarding t...

  9. Serbia’s attitude towards Albania during the period of Wilhelm Wied

    Directory of Open Access Journals (Sweden)

    Milazim Elshani

    2016-07-01

    Full Text Available This manuscript analyzes a distinctive period of Albanian history, that after the Balkan Wars and Conference of Ambassadors in London, a period of external political influences with many different interests to implement or prevent the development of the newly created Albanian state. In this context the article focuses in the attitude of Serbia towards Albania, with Serbia’s aim to disable the consolidation of the Albanian state. It tried to influence in the political circumstances regarding the nomination of the ruler prince or at least it tried to alter the situation in the field through its different exponents, religious or political affiliations, in order to make the longstanding dream possible to cruise through the Albanian lands. The declaration of Albanian Independence evoked great concern to the Balkans neighboring states who had dedicated Albania as war trophy. On the other hand, the Serbian politics tried to find elements which would undermine the act of Independence or to put it on a shade in any form. The interest of Serbian politics towards Albania was consistent. If we want to best understand the attitude of the Serbian politics towards Albanians, during this time, we have to analyze in a comparative manner Serbia’s politics in Albania and Kosovo and other occupied territories. While in Albania it committed itself for a Muslim prince, in the occupied Albanian territories it followed a strict anti-Islamic and anti-Albanian policy.

  10. Wie schreiben sprachschwache Kinder? Beitrag zum Zusammenhang zwischen explizitem und implizitem Sprachwissen

    OpenAIRE

    Schaller, Pascale

    2017-01-01

    Der Beitrag fokussiert den Zusammenhang zwischen sprachlich explizitem und implizitem Wissen in den Bereichen Wortschatz, Grammatik und Orthographie bei sprachschwachen Kindern. Er plädiert dafür, Schreiben als Sprachhandlung aufzufassen und neben dem Textprodukt den Schreibprozess und die Sprachwissensvoraussetzungen der Kinder als diagnostisch relevante Aspekte zu reflektieren. Anhand empirischer Analysen aus einer explorativen Studie wird aufgezeigt, dass sich das Verhältnis von explizitem...

  11. Von Mr Classic zu Mr Nerd: Wie Forschende soziale Medien nutzen

    Directory of Open Access Journals (Sweden)

    Doreen Siegfried

    2014-12-01

    Full Text Available Unter Wissenschaftlerinnen und Wissenschaftlern lassen sich vier Typen differenzieren, die ein signifikant unterschiedliches Verhalten in ihrer Nutzung und ihrer Einstellung gegenüber Social-Web-Anwendungen zeigen: Ms Maker, Mr Tech, Mr Classic und Mr Nerd. Grundlage für die Identifizierung dieser Social-Media-Typen ist die Auswertung von 778 Online-Fragebögen, die von Anfang September bis Mitte Oktober 2013 erhoben wurden. Erfragt wurde die Nutzung von Social-Media-Instrumenten für die tägliche Arbeit in Forschung, Lehre, Administration und Wissenschaftskommunikation. Neben Intensität und Kontext der Nutzung von Web-2.0-Diensten wurden auch die Gründe für Nutzung bzw. Nicht-Nutzung einzelner Kanäle sowie generelle Einstellungen gegenüber Social-Media-Werkzeugen erfragt. Among scientists, four types of personality can be identified whose usage and attitude towards social web applications show significant variations: Ms Maker, Mr Tech, Mr Classic and Mr Nerd. This typification is based on 778 online questionnaires received between September and October 2013. The survey sampled the usage of social media tools for daily routines in research, teaching, administrative work and scholarly communication. The survey asked questions about the intensity and the context in which Web 2.0 services are used, about the reasons for (not using certain channels, and about general attitudes towards social media tools.

  12. Digitalisierung und Energie 4.0 - Wie schaffen wir die digitale Energiewende?

    Science.gov (United States)

    Irlbeck, Maximilian

    Die digitale Energiewende verändert nachhaltig die Systeme der "alten" Energiewelt. Ein Zusammenwachsen verschiedener Domänen im Energiesystem, die durch digitale Technologie möglich wird, birgt enorme Herausforderungen, ist aber notwendig, um die Energiewende und ihre Ziele zu meistern. Dieser Beitrag beschreibt die Wirkung der Digitalisierung auf das Energiesystem, listet Charakteristika der digitalen Energiewende auf und schildert für verschiedene Domänen mögliche Zielvorstellungen, die durch digitale Technologie umsetzbar sind. Am Ende erläutert der Beitrag Handlungsschritte, die auf dem Weg zu einem erneuerbaren Energiesystem gegangen werden sollten und zeigt Probleme und Risiken einer Fehlentwicklung auf.

  13. DIE SKLAVEREI WIE STATUSRECHTLICHE KATEGORIE IM LICHTE CICEROS LEHRE DES IUS NATURALE

    OpenAIRE

    Lučić, Zdravko

    2007-01-01

    Obrađujući teorijsko - filozofski segment Ciceronovog djela autor pokušava razjasniti pravne, moralne i političke dimenzije ropstva kao statusno - pravne kategorije. U De legibus l ,24 kao polaznu tačku uzima problem objašnjenja prirode čovjeka, pojmova perfecta ratio, societas iuris, mala consuetudo, utilitas i ius. Pravednost kao temeljna vrlina se uzima kao osnova prava . Konkretizacija pojma ropstva kao pozitivnog statusno - pravnog instituta se izvodi kroz određivanje sadržaja osnovnih e...

  14. Genes and chromosome arrangements affecting sex ratio in the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Wood, R.J.; Kafu, A.A.; Rendon Arana, P.A.; Owusu-Daaku, K.; Alcock, R.M.; Hallows, J.A.; Busch-Petersen, E.; Mani, G.S.

    1997-01-01

    The MP (male producing) factor, which shows temperature sensitive meiotic drive favoring the Y chromosome, proved to be highly variable in spermatozoal deficiency in different cysts within a single testis. However, the overall loss of sperm corresponded almost precisely with the loss of females. The minimum proportion of females consistently obtained in inbred lines was about 30-35%. On the basis of parallel studies with the mosquito Aedes aegypti, variability between cysts is open to interpretation in terms of different rates of senescence. The T:Y(wp + )30C genetic sexing strain, which is designed to generate males with brown (wild type) puparia and females with white puparia, was contaminated artificially in a series of population experiments to investigate the pattern of breakdown. Wild type contamination with either sex caused an increase of brown pupae. The sex ratio became progressively distorted in favour of females after contamination with females, mated or unmated, but not after male contamination. The experiments revealed evidence of a low frequency of natural recombination between wp + and the translocation breakpoint on the Y chromosome, shown by the appearance of wp males. The frequency of male recombination (r) and the selection coefficient (s) against wp/wp were measured over 11 generations. The best fit to the observed data was obtained with r = (0.14 ± 0.04)% and s=(26.0 ± 2.7)%. Using these estimates to predict the frequency of wp + females and wp males for up to 100 generations, it was concluded that white males would never exceed 0.5% whereas the frequency of brown females was expected to exceed 33% after 25 generations. Published data on the mass reared strain, maintained with a population size of 240,000 adult flies, were subjected to the same analysis. A higher value of s between (38.0 ± 3.2)% and (52.0 ± 0.3)% was obtained under these conditions. Electrophoretic studies on esterases revealed a significantly higher activity in a recently colonized strain from Morocco than in two laboratory strains (H1 and TY4). No change in activity was observed in this strain during the first three generations of laboratory culture. (author)

  15. How should communal gas supply be organized?; Wie muss eine kommunale Gasversorgung organisiert sein?

    Energy Technology Data Exchange (ETDEWEB)

    Wolters, T.

    2000-06-01

    Reliable gas supply requires a reliable and economical organisational and procedural structure. These aspects were discussed theoretically and with the aid of examples in a diploma thesis which received a DVGW award. [German] Eine sichere Gasversorgung verlangt auch nach einer planvollen und angemessenen Aufbau- und Ablauforganisation eines Unternehmens. In einer vom DVGW ausgezeichneten Diplomarbeit wurden diese Aspekte theoretisch und an Beispielen eroertert. (orig.)

  16. 3D-Druck: Wie additive Fertigungsverfahren die Wirtschaft und deren Supply Chains revolutionieren

    OpenAIRE

    Hofmann, Erik; Oettmeier, Katrin

    2016-01-01

    Die additive Fertigung – weitläufig bekannt unter dem Begriff »3D-Druck« – erfreut sich zunehmender Aufmerksamkeit. Obwohl diese Technologien vielfältige Potenziale in unterschiedlichen Branchen haben, ist deren Nutzung zur Herstellung industrieller Produkte bislang wenig verbreitet. Anhand einer Befragung unter 195 Schweizer Unternehmen untersucht dieser Artikel Faktoren, die einen Einfluss auf die Nutzung von additiven Fertigungstechnologien haben. Die Ergebnisse lassen darauf schließen, da...

  17. Hunger bekämpfen! Aber wie? Drei Thesen aus wirtschaftsethischer Sicht

    OpenAIRE

    Pies, Ingo

    2013-01-01

    Dieser Artikel formuliert drei Thesen zur globalen Ernährungssicherheit: (1) Hunger ist ein moralisches Problem mit wirtschaftlichen und letztlich politischen Ursachen. (2) Kleinbauern verdienen Hilfe und Solidarität. Aber nicht deshalb, weil sie Kleinbauern, sondern weil sie Menschen sind, deren Menschenwürde und deren Menschenrecht durch Hunger und Armut verletzt wird. Folglich muss man ihnen helfen, unabhängig davon, womit sie ihren Lebensunterhalt bestreiten. (3) Die Kampagne gegen die Ag...

  18. Wie se grond koop Boas (Rut 4:9)?/Whose land did Boaz buy (Ruth ...

    African Journals Online (AJOL)

    Acta Theologica. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 25, No 2 (2005) >. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Download this PDF file. The PDF file you selected should load here if ...

  19. Dosimetry practice for irradiation of the Mediterranean fruit fly Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Zavala, J.L.; Fierro, M.M.; Schwarz, A.J.; Orozco, D.H.; Guerra, M.

    1985-01-01

    In a sterile insect technique (SIT) programme the sterility of mass-reared insects, in our case Mediterranean fruit flies, is of primary importance. Mediterranean fruit fly pupae are irradiated in an AECL-CP-JS-7400 irradiator. Originally the capacity was 31,300 Ci, but because of the natural decay of cobalt, the actual source strength is 14,836 Ci. Thus, the dose with which the pupae are irradiated is 14.5 +- 1 krad (145 +- 10 Gy). A great risk in the daily release of sterile flies is that some batches of fertile flies may also be released. To ensure that this does not occur, continuous dosimetric check-ups have to routinely be carried out. Fricke dosimetry is ideal for this purpose because it has a range of response to doses of 4 to 40 krad (40 to 400 Gy) and because it is an economic and simple dosimetric system. (author)

  20. Nachrichten aus Amerika oder wie man in Koblenz von Humboldts Reise nach Amerika erfuhr

    Directory of Open Access Journals (Sweden)

    Franz-J. Weihrauch

    2006-04-01

    Full Text Available Article in German, Abstracts in English and German.In the almost forgotten Jacobinic newspaper “Der Bewohner des West Rheins” (i.e. The Citizen of the Western Rhine, published in Koblenz/Rhine there appeared on Brumaire 29th of the year IX (i.e. November 20th 1800 a summary of a letter dated January 24th, 1800, sent by Alexander von Humboldt from Laguaira, Venezuela to his colleague Antoine François de Fourcroy (1755-1809 in Paris. It takes Humboldt’s letter six months to reach the French capital and further four months later it arrives in the (at that time French province of the departements on the left bank of the Rhine. This up to now unknown publication of a a letter by Humboldt in the newspaper “Der Bewohner des West Rheins”, a paper of only regional significance, vividly shows two parallel developments: on the one hand the spreading of knowledge from the centre to the perifery, from the capital to the province and on the other hand the spreading of knowledge from the already highly specialized scientific network to the general newspaper business that “generates” publicity and popularizes knowledge.

  1. Walter Gropius en la Wießenhofsiedlung. Dos prototipos de viviendas industriualizadas

    OpenAIRE

    Caballero Cortés, Matías

    2014-01-01

    [ESP] En 1927 Gropius presenta las viviendas 16 y 17 en la colonia experimental de Stuttgart, primer punto de encuentro de los representantes de la nueva arquitectura y preludio del primer CIAM. Mies van der Rohe, director artístico de la exposición, marca unas directrices mínimas para enfocar el tema de la vivienda moderna. Se permite la experimentación con técnicas y materiales nuevos pero espacio y forma tienen prioridad. Sin embargo, Gropius lleva al límite la experimentación, probando...

  2. Effects of acoustic waves on pupas of Ceratitis capitata. (Wied., 1824) (Diptera: Tephritidae)

    International Nuclear Information System (INIS)

    Barros, Adilson Camilo de

    2007-01-01

    The aim of this research has been to investigate the hypothesis that acoustic waves would provoke a measurable effect on a population of fruit flies, a treatment denominated sonication. Ionizing radiation, the causative agent for the treatment designated by irradiation has been used as a reference, as long as its effects on living beings and particularly on insects are widely known. This research also enquiries into the possible effects of acoustic waves and gamma rays. The experiments of sonication were carried out in the Laboratory of Entomology of the Instituto Biologico de Sao Paulo. The experiments of radiation were carried out in the Centro de Tecnologia das Radiacoes - IPEN, located within the campus of the University of Sao Paulo. It has been employed a Gamma cell source model 220 with average activity of 757.069 ± 293.484 curies (Ci) and an average doses rate of 3.106 ± 0.245 kilo grays per hour (kGy/h). Levels applied to the sonication treatment, in hertz and kilo Hertz were: 0 Hz (control) ; 5.0 Hz; 10.0 Hz; 20.0 Hz; 40.0 Hz; 60.0 Hz; 80.0 Hz; 1.0 k Hz; 2.0 k Hz; 10.0 k Hz; 15.0 k Hz e 20.0 k Hz. Irradiation doses applied in Grays were: 5.0 Gy; 7.5 Gy; 10.0 Gy; 12.5 Gy; 15 Gy; 50 Gy; 100 Gy; 150 Gy and 200 Gy. It has been used an acoustic tube made of glass - 40.6 cm in length and 9.1 cm in diameter - and sinusoidal waves originated from three acoustic sources, with response in decibels, which sound intensity varied from 93.60 ± 1.51 dB to 123.96 ± 0.23 dB. Final results have pointed to evidences that would justify the rejection of null hypothesis H 0 , to which the average of the treatments due to acoustic waves do not differ significantly from each other.(author)

  3. Wie bedeutsam ist Gesundheit für den Studienerfolg von Studierenden?

    DEFF Research Database (Denmark)

    Stock, Christiane

    2017-01-01

    a high level of self-perceived health. However, certain symptoms and health complaints as well as mental health problems are frequent among students. Students’ health behaviour is characterised by a relatively high level of physical activity. On the other hand students have a high level of substance use......Background: This narrative review aims to summarize the research findings on students’ health in Germany with special focus on stress and mental health, substance use and the relationship between health factors and academic achievement. Results: Existing research shows that German students report....... Conclusion: There is some evidence for a positive association between health and healthy lifestyle and academic achievement of students....

  4. Multi-fuctional heat recovery systems. Really energy saving; Multifunktionale Waermerueckgewinnung. Wie man wirklich Energie spart

    Energy Technology Data Exchange (ETDEWEB)

    Schilling, Heinz [SEW Systemtechnik fuer Energierecycling und Waermeflussbegrenzung GmbH, Kempen (Germany)

    2009-10-15

    An energy saving leeds only to a correct optimized operation, if a demand-oriented total design is integrated into the building. In special for air-conditioning energy saving measures are presented and essential criteria named, to save in fact effectively, efficiently, reliably and profitably energy and enhance simultanously user quality. (orig./GL)

  5. District heat: How to conduct sales talks more successfully. Wie koennen Fernwaermeverkaufsgespraeche erfolgreicher gefuehrt werden

    Energy Technology Data Exchange (ETDEWEB)

    Dommann, D

    1981-01-01

    The high fixed costs for distribution systems and production plants compel the district heating economy to work to capacity as soon as they can in order to cut down the immense initiation costs and to enhance the economic efficiency. Technical experts can advise customers properly. But does technical knowledge alone suffice to sell. No, only the psychologically alert expert who has learned to make proper use of his technical knowledge will be a successful salesman. The author presents a number of methods for successful selling and negotiating that can help to make the daily sales business more efficient.

  6. Use of sterile insect technique in Brazil by the sterilization of Ceratitis capitata (Wied., 1824)

    International Nuclear Information System (INIS)

    Okeese, G.O.; Kitomer, T.J.; Gayaradus, L.B.; Etrigan, M.; Jansen, C.W.J.H.; Houlahar, H.L.

    2006-01-01

    The Sterile Insect Technique is a method of pest control allowed in Integrated Pest Management programs in fruit growing, where sterile insects released compete in mate process against fertile wild ones, generating a gradative population reduction. The most used sterilization method is using ionizing radiation from 60 Co or 137 Cs. For efficient application of SIT, an important item is the sterilizing dose. This must be as lower as possible in order to preserve insect behavior. In this work, it was studied the reproductive potential of fruit fly Ceratitis capitata, tsl VIENNA 8 strain, irradiated with different doses of gamma radiation. This strain has been used in population suppression programs at fruit-growing areas from Northeast of Brazil, through a partnership between CENA and Bio factory MOSCAMED Brazil, intending only sterile male releases. Radiation source used was a 60 Co irradiator, with 17.2 x 1012 Bq. Individualized couples were distributed in a randomized delineament with 10 replicates for each treatment and eggs were collected for fifteen days. With 9 and 10 days old, pupae were irradiated with doses ranging from 30 to 120 Gy. All averages of emerged adult's percentages were higher than 90%. In regards to fecundity, different doses did not affect the number of eggs laid, being the overall mean around 30 eggs/couple/day. Fertility data showed that as radiation dose increases, sterility increases. It was concluded that the dose of 90 Gy can be used in Brazil, since to SIT programs a dose is chosen witch prevents an egg hatch higher than 1%. (author)

  7. How does a Swiss citizen want to heat his home?; Wie will der Schweizer heizen ?

    Energy Technology Data Exchange (ETDEWEB)

    Stadelmann, M

    2003-07-01

    This short article presents a summary of the results of representative market research carried out on which forms of energy are the most favoured in Switzerland. Solar energy is the form of energy at the top of the list of the most desired forms of energy for providing hot water. Natural gas is the energy carrier most favoured for space-heating, having for the first time overtaken solar energy in this sector. The article also quotes further findings of the survey, including the roles played by air pollution and other factors that influence energy desires. Also, the survey studied the sources used by the Swiss to obtain information on the subject of energy supply when building, buying or refurbishing their homes. The results are presented in the form of diagrams.

  8. En wie zorgt er voor de mantelzorger? Ondersteuning van mantelzorgers na opname van hun naaste

    Directory of Open Access Journals (Sweden)

    Ingrid Nordt

    2012-12-01

    De mantelzorger speelt een belangrijke rol in de zorg voor naasten. Het overheidsbeleid is erop gericht de mantelzorger zoveel mogelijk te ondersteunen bij het kunnen blijven vervullen van deze rol. Maar wat als de zorg te zwaar wordt en opname in een zorginstelling onvermijdelijk is? Dit artikel focust zich op de ondersteuning die mantelzorgers nodig hebben nadat hun naaste is opgenomen in een zorginstelling. Voor de mantelzorgers is dit een moeilijke periode waarin zij een nieuwe rol moeten zoeken in een nieuwe situatie.

  9. „Das war ziemlich cool, wie die Geschichte gelaufen ist“

    Directory of Open Access Journals (Sweden)

    Trenda, Maria

    2017-11-01

    Full Text Available Dealing with biblical text-tradition is one core content in Christian religious education. One of the main questions in this context asks how this can be realised attractively for kids and young adults of today. One way to be attractive is ‘Bibliolog’, as it empowers students to act and speak as researchers. In this text connections are drawn between religious-didactic principles and currently concepts like ‘subject-oriented learning’, theology for children and the concept of achieving competences in religious education. The empirical basis is formed by the video-documentations of teaching examples in grade four in primary schools in two cities in Upper Austria.

  10. Sterilization by cobalt 60 of the mediterranean fruit fly Ceratitis Capitate Wied

    International Nuclear Information System (INIS)

    Dimundu Puena, I.; Cirio, Ugo.

    1978-01-01

    Ceratitis capitata have been irradiated with 2, 4, 6 and 10 Krad of a Co-60 gamma irradiator at 300 rad/min flow. Following results have been obtained: abundant and regular egg laid at 1 to 2 krads, reduced but regular egg laid at 4 krads and total sterility from 6 krads. The 10 krads irradiated insects exhibit satisfactory life time and activity. The 6 and above krads irradiated females are completely sterile but have the laid reflex. The 8 krads irradiated males exhibit sexual strength comparable to that of normal males. Males fertility is decreased with increasing irradiation dose, eggs obtained with normal female have fertility of less than 1 % for doses above 7 krads. However it appears that at 8 krads dose, some males can form again normal spermatozoids after 20 to 30 days. The recommended irradiation dose is 10 krads

  11. Sexual courtship of steriles males of Ceratitis Capitata (WIED) in SIT program

    International Nuclear Information System (INIS)

    Fadhel, Salma

    2008-01-01

    In the SIT programme, the success of sterile males to compete with the fertile males is an important parameter for assuring efficiency. In this study, two methods are tested to improve the sterile male quality: the first is the exposure of sterile males to different concentrations of Ginger Root Oil (GRO) (0, 20, 50 and 80 μl), the second is the exposure of males to different irradiation doses (80, 90, 100, 110, 120 and 145 Gy). The comparison of these methods depends to study of quality parameters (emergence, flight ability, survival) and courtship behaviour of sterile males (sperm production, mating competitiveness, sperm transfer). The 80μl concentration of GRO improves the mating competitiveness of males to compare with the Control (respectively: 68% and 46%). The 80 Gy irradiation dose assure the same result then the Control. (Author)

  12. E-mobility. How does the future sound?; E-Mobilitaet. Wie klingt die Zukunft?

    Energy Technology Data Exchange (ETDEWEB)

    Pischinger, Stefan; Wolff, Klaus; Eisele, Georg; Genender, Peter [FEV Motorentechnik GmbH, Aachen (Germany); Schuermann, Gregor [RWTH Aachen Univ. (Germany). VKA Lehrstuhl fuer Verbrennungskraftmaschinen

    2011-07-01

    The interior noise of electric vehicles is analyzed by the example of FEV's Liiondrive and compared to the corresponding series vehicle Fiat 500. Beside objective analysis audio lab panel tests including virtual sound modifications were performed for subjective evaluation. Due to the missing combustion engine noise the Liiondrive is up to 12 dB(A) quieter than the ICE-vehicle. The pleasantness impression can be further improved by reducing the high frequency noise shares from gear toothing and electromagnetic orders. The low load dependency leads to a rather undynamic impression, which can be improved by a load dependent admix of low frequency E-motor orders. Due to the negative side effect on pleasantness this fits for electric vehicles in the sporty market segment. The limited driving range of an electric vehicle can be overcome by the installation of a range extender (RE), a combination of ICE-engine and generator. The noise contribution of this module should be kept below the vehicle speed dependent original interior noise of the electric vehicle by selection of a low noise engine concept, like e.g. Wankel engine, combined with a suitable mounting system and engine encapsulation. The operating strategy of the range extender module provides an additional degree of freedom for optimizing NVH. A noticeable range extender operation below 30 km/h should be avoided and a vehicle speed dependent range extender speed above 30 km/h makes optimal use of masking effects from road and wind noise and contributes to a good dynamic impression. (orig.)

  13. Vascularização arterial do trato gastrointestinal da Trachemys scripta elegans, Wied, 1838

    Directory of Open Access Journals (Sweden)

    Rosângela Felipe Rodrigues

    2003-01-01

    Full Text Available Estudamos a irrigação do esôfago, ventrículo gástrico, pâncreas e intestinos de 30 tartarugas da espécie Trachemys scripta elegans injetados com substância látex, onde evidenciamos duas aorta, sendo aorta direita e esquerda, que em 100,00% dos casos apresenta um trato anastomótico entre elas, ao nível da emergência da artéria celíaca. A artéria mesentérica cranial é responsável pela irrigação do jejuno, íleo, ceco, colo ascendente, colo transverso em 100,00% dos casos. Já a artéria mesentérica caudal origina-se da artéria ilíaca interna no antímero direito, em 26 preparações (86,60%, e no antímero esquerdo em 03 casos (13,30%. Em 01 preparação (3,30% a artéria mesentérica caudal, no antímero direito, origina-se a partir das artérias ilíacas direita e esquerda.

  14. Wie kijkt er mee? Het Nieuwe melden - De impact van beeld

    NARCIS (Netherlands)

    Vries, A. de; Menkhorst, M.; Vliet, P.J. van; Stavleu, J.M.; Bonte, C.; Schilder, C.

    2018-01-01

    Meldingen naar 112 en 0900-8844 worden nu nog telefonisch gedaan. Maar meldkamers in Nederland verwachten dat ze binnen vijf jaar met beelden uit meldingen zullen werken. Zegt een beeld meer dan duizend woorden, of resulteert beeld in een verkeerde weergave van een bepaalde situatie? Kan het tot

  15. Genetic or mechanical sexing system for the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Walder, J.M.M.

    1990-01-01

    A black puparium, monofactorial mutant was isolated in 1983 from a laboratory colony of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann). The mutant was used to construct a genetic sexing strain based on pupal sorting. Translocations were induced in wild male adults, 48 hours old, by gamma radiation (55 Gy; 60 Co). These males were crossed to black pupae females and produced two pupal sorting strains (T-44 and T-213) in 1987. These strains were lost after six generations. In another series of translocation inductions the strain T-87B was screened. Rearing the strain for eight generations in the laboratory provided no indication of instability in the strain. T-87B is now being mass reared. (author). 16 refs, 4 tabs

  16. Development of the formal genetics of the Mediterranean fruitfly, Ceratitis capitata Wied

    International Nuclear Information System (INIS)

    Roessler, Y.

    1980-07-01

    An attempt was made to develop Medfly (Ceratitis capitata) strains with a sex-limited dimorphism permitting automated sex-sorting through pupal colour dimorphism. (Such sorting is important in sterile insect release). This can be achieved by ''translocating'' mutant pupal colour alleles into the male's Y-chromosome. The Y-chromosome translocations were effected by irradiating wild-type males with 1.0-1.2 Krad of gamma radiation, followed by appropriate crossing. The results have been published in Entomophaga 24(1979)411-416). The effect of sterilization on fertility and competitiveness of males of the ''69-apricot'' line was investigated

  17. Zorg; wie doet er wat aan : een studie naar zorgarrangementen van ouderen

    NARCIS (Netherlands)

    Luijkx, K.G.

    2001-01-01

    As a result of fertility decline and increasing life expectancy, the age structure of the Dutch population is changing, with a larger proportion and number of elderly persons and declining proportions and numbers of younger adults. Hence, the number of people in need of care is growing. While -at

  18. Ocena wartości zamówień międzybibliotecznych

    Directory of Open Access Journals (Sweden)

    Jeszke Łukasz

    2017-12-01

    Full Text Available In the context of the current situation and forecasts for the Interlibrary Loan service in Poland, the article presents the evaluation concept of the value of ILL orders. It is a qualitative approach to the ILL service, assessing orders using e. g. guidelines issued by the Ministry of Science and Higher Education. Citation from Web of Science and Scopus databases were used, as well as an analysis using the Impact Factor and journal values from the Unified List of Scientific Journals (by Ministry of Science and Higher Education. The basis for the analysis are interlibrary orders submitted by students, PhD students and employees of the Poznan University of Technology in 2016. The evaluation confirms the high value of these orders among all user groups and the wide range of publications types our patrons need.

  19. How does the European market of manufacturing plants develop?; Wie wird sich der europaeische Anlagenmarkt entwickeln?

    Energy Technology Data Exchange (ETDEWEB)

    Mederle, A. [Thoeni Industriebetriebe GmbH, Telfs (Austria)

    2007-07-01

    Within the scope of the 3rd symposium ''Processes and materials for energy technologies'', held between 20th and 21st June, 2007, at the ATZ Entwicklungszentrum in Sulzbach-Rosenberg (Federal Republic of Germany), the author reports on the development of the European market of manufacturing plants. The industrial plant constructors supply production plants in more than twenty industrial sectors such as chemical and pharmaceutical industry, textile industry or food processing industry. The industrial plant constructors have special qualities in project management, risk management, design of international contracts, management of supplier, logistics, After Sales Service, guarantee management as well as warranty management. The mechanical engineering and power plant engineering is one of the greatest industrial sector in the European Union. Nearly one tenth of the added value in the European Union is due to the mechanical engineering and power plant engineering. Nearly 24.500 companies are active in the mechanical engineering sector in the European Union. 2.6 million employees have an employment in this sector. They have produced machines and plants with an order value of 420 billion Euro in the year 2005. Two thirds of the production volume remain in the European Union. Only one third of the produced machines and plants are exported in countries outside of the European Union. The export volume amounts 146 billion Euro in the year 2005 and is greater than the export volume of the United States of America (70 billion Euro) and Japan (69 billion Euro). The Federal Republic of Germany is the leading country with respect to the local content of production (39 %) within the European Union followed by Italy (16 %), France (11 %), and Great Britain (9 %). Since the beginning of the nineties in the twentieth century, the conveying technology has developed to the greatest sector in the mechanical engineering. In this sector, the production volume amounts nearly 50 billion Euro in the European Union in the year 2005, followed by commercial low-temperature technical and climatic technical sectors (37.5 billion Euro) as well as machines for processing of tools and wood (36.8 billion Euro).

  20. Quarantine treatment to Ceratitis capitata (Wied., 1824) (Diptera: Tephritidae) in orange fruits (Citrus sinensis)

    International Nuclear Information System (INIS)

    Albergaria, Nuno Miguel Mendes Soares de

    2005-01-01

    This work was carried out to evaluate the effect of thermal treatments (vapour heat and hot water) and irradiation on Ceratitis capitata eggs and larvae (first, second and third instars), in 'Valencia' oranges; the relation between temperature and exposition time to vapour heat and hot water on fruit fly immature; the relation among the different doses of radiation on fruit fly immature and evaluate the effect of the treatments (thermal treatments and irradiation) on the chemical composition of the fruits. It was evaluated the heat absorption and loose of heat by the fruit. For thermal treatments it was used temperatures of 44 and 46 deg C for 15,30,60, 90 and 120 minutes and a control. For irradiation were used the doses: 10,20, 30, 40, 50, 100, 150 and 200 Gy. By the results obtained it is possible to conclude that: to the control of eggs and larvae (first, second and third instars) the treatment with vapour heat was less efficient than the hot water treatment; the thermal treatments of C. capitata eggs and larvae (first and second and third instars) can be recommended with vapor heat at 46 deg C at 152.2 minutes or with hot water at 46 deg C at 84.8 minutes, achieving the quarantine request; third instar larvae are more tolerant to the thermal and irradiation treatments; the treatment with irradiation can be recommended for quarantine treatment of ali immature stages evaluated with the dose of 72.88 Gy; the dose of 50 Gy causes sterility to the adults emerged from ali immature stages irradiated; treatments do not cause any change in the chemical proprieties in the orange fruits var. 'Valencia'. (author)

  1. Gärtner der urbanen Arbeitswelt. Wie Coworking Spaces kuratiert werden

    OpenAIRE

    Merkel, J.

    2014-01-01

    Coworking has become a popular social practice for freelance workers all over the world. With their openness, flexibility and collaborative atmosphere coworking spaces and, particularly, each hosts’s curatorial practices can reveal important insight for the emergence of new ideas and the sociology of innovation.

  2. 'Gewoon worden wie je bent': Over authenticiteit en anti-institutionalisme

    NARCIS (Netherlands)

    S.D. Aupers (Stef); D. Houtman (Dick); I. van der Tak

    2003-01-01

    textabstractAnalysis of a dozen semi-structured interviews with Dutch New Age trainers demonstrates that the modern 'ethics of authenticity' underlies contemporary society's anti-institutional mood. All institutions, be they traditional or modern, or so our respondants argue, prevent one from being

  3. Invisible transport pathways. How dangerous are pipeline tracks?; Unsichtbare Transportwege. Wie gefaehrlich sind Pipelinetrassen?

    Energy Technology Data Exchange (ETDEWEB)

    Konersmann, Rainer; Kuehl, Christiane; Wilk, Werner [Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin (Germany). Arbeitsgruppe ' Risikomanagement'

    2008-11-15

    Pipelines are usually buried and have the function of long-distance transport. For this, special safety measures are requires. For example, pipelines of the chemical industry have defined locations that must be easily identifiable. Pipelines must be adapted to infrastructural and topographic boundary conditions, in consideration of environmental protection and because the pipeline may be damaged by external influences. Even minor releases of chemical substances may pollute water and soil and cause damage to humans. The contribution discusses the possible damage resulting from a pipeline leak. (orig.)

  4. How efficient are heat pumps? Investigations in practical operation; Wie effizient sind Waermepumpen? Messungen im Praxisbetrieb

    Energy Technology Data Exchange (ETDEWEB)

    Miara, Marek [Fraunhofer ISE, Freiburg (Germany)

    2010-11-15

    Heat pump systems win ever larger market shares within the range of the heating and hot water preparation in buildings. But, how great is their efficiency in the practical operation? What are the factors which affect the efficiency? In order to evaluate the ecological, energetic and economic criteria better, Fraunhofer ISE (Freiburg, Federal Republic of Germany) has investigated nearly two hundred heat pump systems scientifically. The contribution under consideration summarizes the most current results and the most important realizations.

  5. Messungen der Radonkonzentration in der Bodenluft - Wie zuverlässing sind die Messwerte?

    Czech Academy of Sciences Publication Activity Database

    Conrady, J.; Guhr, A.; Turek, Karel

    2011-01-01

    Roč. 17, č. 3 (2011), s. 56-60 ISSN 0947-434X Institutional research plan: CEZ:AV0Z10480505 Keywords : measurements * radon concentration * soil air Subject RIV: DN - Health Impact of the Environment Quality

  6. Japans Hauptstadt in Deutschland -. wie Düsseldorf sich zum wichtigsten Ziel japanischer Investitionen machte

    Science.gov (United States)

    Jäger, Kristina

    2017-04-01

    Local actors, such as municipal authorities, can promote and shape the settlement of foreign companies in a particular manner. In many instances, actions of economic promotion can lead to several conflicts; firstly between foreign investors and their national representatives, and secondly with (supra)regional industries or business circles. Here, flexible and long-term settlement projects, the permission of migrant infrastructure, and moreover, their high-profile marketing may attract foreign companies and long-term investors.

  7. Wie se grond koop Boas (Rut 4:9)?/Whose land did Boaz buy (Ruth ...

    African Journals Online (AJOL)

    According to the laws and customs in the times of the judges, however, a widow was not allowed to inherit land from her husband, and a woman was not allowed to own, buy or sell land. In this article the following possibilities are investigated: Either the writer of the Ruth narrative was so far removed from the time of Ruth ...

  8. Kommunikation artgerechter Tierhaltung: Wie können Öko-Konsumenten angesprochen werden?

    OpenAIRE

    Korn, Antje; Hamm, Ulrich

    2015-01-01

    Sustainable and ethical product quality is gaining more importance in the context of food choice. Especially consumers of organic products are sensitive to ethical product quality. After all, certificates and labels only have limited capacity to communicate the complexity of sustainably produced foods. This paper gives an example for communicating sustainable product quality in-depth by taking the example of suckler-based beef. Consumer response to different communication material (a document...

  9. Origem do plexo braquial de mocós (Kerodon rupestris wied, 1820

    Directory of Open Access Journals (Sweden)

    Jailson José Santana

    2003-01-01

    Full Text Available O mocó, Kerodon rupestris, um mamífero roedor da família dos cavídeos muito parecido com preá, é um animal altamente adaptado às condições de calor e de escassez de água e de alimento, principalmente nos períodos das grandes secas que assolam periodicamente a região do semi-árido nordestino. Verifica-se que na literatura há escassez de dados referentes à anatomia funcional dos mocós e, em especial de trabalhos envolvendo a anatomia do sistema nervoso. Objetivando elucidar o comportamento anatômico do plexo braquial de mocó e com o propósito de contribuir para o desenvolvimento da neuroanatomia comparada, procedeu-se esta pesquisa, na qual foram utilizados dez animais adultos de diferentes idades (nove machos e uma fêmea que vieram a óbito no Centro de Multiplicação de Animais Silvestres (CEMAS da Escola Superior de Agricultura de Mossoró-ESAM. Após a fixação em solução aquosa de formol a 10,00%, realizou-se a dissecação bilateral da origem dos plexos braquiais, sendo os resultados registrados em desenhos esquemáticos, e suas disposições agrupadas em tabelas para posterior análise estatística, fundamentada na freqüência percentual. Observando-se que o plexo braquial de mocó é resultante de comunicações estabelecidas, principalmente, entre os ramos ventrais dos três últimos nervos cervicais e dos dois primeiros nervos torácicos, havendo contribuição do quinto nervo cervical em 35,00% dos casos. O plexo braquial originou-se mais freqüentemente a partir de C6, C7, C8, T1 e T2, consiguando-se em 40,00% das dissecações.

  10. Wie is die sondaar? Die beskouing van Karl Barth | Zyl | HTS ...

    African Journals Online (AJOL)

    ... on the cross in the place of all sinners of all times - past, present and future. The price that God paid in surrendering his only Son to such suffering, indicates the enormous guilt and baseness of every sinner. Every human being is utterly insolvent and can only be delivered from sin through God's graceful remission of sin.

  11. Wie viele Arten von Milbenkankern (Opiliones, Cyphophthalmi gibt es in Österreich?

    Directory of Open Access Journals (Sweden)

    Raspotnig, Günther

    2011-07-01

    Full Text Available For the last 60 years, the mite-harvestman Cyphophthalmus duricorius Joseph, 1868, a soil-dwelling sironid, has been considered to be the only representative of the opilionid suborder Cyphophthalmi in Austria. However, novel data from recent collections confirm the presence of at least two further Austrian cyphophthalmid species. (1 Siro cf. crassus Novak & Giribet, 2006 occurs in at least one location in SW Styria near the Slovenian border and hence represents a member of a second genus of Austrian sironids. (2 A further morphologically distinct sironid (“Sironidae gen. et sp. nov.?” – so far undescribed and systematically not placed in detail – was collected in the borderland between Styria and Carinthia. All three species can be found in a small area of a few square-kilometers; although no syntopic occurrence was recorded.

  12. Pop-Götzendämmerung oder Wie man mit Thors Hammer philosophiert

    Directory of Open Access Journals (Sweden)

    Damir Smiljanić

    2017-05-01

    Full Text Available Der Autor geht von der Krise des Heldentums in der gegenwärtigen Mediengesellschaft aus. Der Mangel an echten Helden wird durch die Projektion von unechten im Raum der Imagination kompensiert. Der Säkularisierung von Mythen entspricht im Bereich der Populärkultur die Erschaffung von „Superhelden” auf der Leinwand. Die Aufgabe des Beitrags ist es, anhand des Beispiels der Filmreihe über den Marvel-Helden Thor die Transformation der mythischen Strukturen und die Problematik der Darstellung von göttlichen Wesen aufzuzeigen, welche immer an der Grenze zwischen Entsprechung und Simulation, Authentizität und Idolatrie, Kunst und Schund geschieht.

  13. Jeopardy alarm system - a building technology like any other technology?; Gefahrenmeldetechnik - eine Gebaeudetechnik wie jede andere?

    Energy Technology Data Exchange (ETDEWEB)

    Hegewald, B. [ZVEI, Fachkreis Ueberfall- und Einbruchmeldeanlagen, Frankfurt am Main (Germany)]|[Siemens AG, Muenchen

    1995-12-31

    In chapter 15 of the anthology about building control the jeopardy alarm system technology is described. The following aspects are discussed: importance of the safety, definition of jeopardy alarm systems, application of safety technique, instructions, guidelines and regulations, advantages of safety systems, integration or combination. (BWI) [Deutsch] Kapitel 15 des Sammelbandes ueber Buidling Control ist der Gefahrenmeldetechnik gewidmet. In diesem Zusammenhang wird auf folgende Themenbereiche eingegangen: Stellenwert der Sicherheit; Definition der Gefahrenmeldeanlagen; Einsatz der Sicherungstechnik; Vorschriften, Richtlinien und Bestimmung; Vorteile von Sicherungssystemen; Integration oder Kombination. (BWI)

  14. Evaluation of ionizing radiation in the control of Ceratitis capitata (Wied., 1824) (Diptera-Tephritidae)

    International Nuclear Information System (INIS)

    Suplicy Filho, N.; Calza, R.; Raga, A.; Oliveira, D.A.; Paiva, J.A.A.; Gloria, M.B.

    1987-01-01

    Brazilian fruit exportation is being jeopardized by quarantine exigencies from import countries after EDB use restriction. Mangoes, papayas and persimmons were treated in their export boxes by Cobalt ionizing radiation doses from 10 to 40 krad after being naturally or artificially infested with eggs and larvae of the Mediterranean Fruit fly Ceratitis capitata W. The results showed that: papayas must be treated mature green, a dose of 38.9 to 40.0 krad is able to control the natural infestation and the artificial infestation with eggs in papayas and persimmons but the same dose was not able to control the infestation with last instar larvae, all the larvae (except four that survived treatments) were unable to attain the adult stage; the only four that survived gave non viable adults, the most susceptible stages of C. capitata to radiation treatment were eggs and pupae. The most resistant were last instar larvae; data obtained from mangoes were not considered due to insect death on the checks. (author)

  15. Advisering van het midden- en kleinbedrijf. Wie wil voelen zal niet luisteren.

    NARCIS (Netherlands)

    Drs. A.J.G. Silvius

    2003-01-01

    This relationship between external knowledge providers, e.g. consultants and academic institutions, and small and medium enterprises (SMEs) is a difficult one. SME entrepreneurs think external advice is expensive, not required and/or not useful. In this paper these arguments are explored against the

  16. Irradiation of mangoes as a quarantine treatment

    Energy Technology Data Exchange (ETDEWEB)

    Bustos R, M E; Enkerlin H, W; Toledo A, J; Reyes F, J; Casimiro G, A

    1991-06-15

    This research project was conducted following guidelines of research protocols for post-harvest treatments developed by the United States Department of Agriculture CUSA. Laboratory bioassays included the irradiation of mangoes infested with third instar larvae of Anastrepha serpentina (Wied), A. ludens (Loew), A. obliqua (Macquart) and Ceratitis capitata (Wied) , at doses from 10 to 250 Gy. Irradiation doses were applied using a Co-60 AECL Model JS-7400 irradiator. The design was chosen to obtain a maximum to minimum ratio equal to, or less than, 1.025. C. capitata was the species most tolerant to irradiation. A dose of 60 Gy applied to third instar fruit fly larvae sterilized this species and prevented emergence of adults of the other three species. A dose of 250 Gy was required to prevent emergence of C. capitata. In fertility tests using emerged adults of A . Iudens, and A. obliqua a dose of 30 Gy gave 45 % and 27 % fertility, respectively. Adults of A. serpentina that emerged, died before reaching sexual maturity. The confirmatory tests, at probit-9 security level, were done at 100 Gy for the three species of Anastrepha and at 150 Gy for C. capitata. The quality of mangoes irradiated up to 1000 Gy was evaluated by chemical, physiological, and sensorial tests. The determination of vitamin C indicated that there was no loss of the nutritive value of the fruit. It also was observed that fruit metabolism was not accelerated since no significant increase in respiration or transpiration was registered and consumers accepted both treated and untreated fruit in the same way. (Author)

  17. Irradiation of mangoes as a quarantine treatment

    International Nuclear Information System (INIS)

    Bustos R, M.E.; Enkerlin H, W.; Toledo A, J.; Reyes F, J.; Casimiro G, A.

    1991-06-01

    This research project was conducted following guidelines of research protocols for post-harvest treatments developed by the United States Department of Agriculture CUSA. Laboratory bioassays included the irradiation of mangoes infested with third instar larvae of Anastrepha serpentina (Wied), A. ludens (Loew), A. obliqua (Macquart) and Ceratitis capitata (Wied) , at doses from 10 to 250 Gy. Irradiation doses were applied using a Co-60 AECL Model JS-7400 irradiator. The design was chosen to obtain a maximum to minimum ratio equal to, or less than, 1.025. C. capitata was the species most tolerant to irradiation. A dose of 60 Gy applied to third instar fruit fly larvae sterilized this species and prevented emergence of adults of the other three species. A dose of 250 Gy was required to prevent emergence of C. capitata. In fertility tests using emerged adults of A . Iudens, and A. obliqua a dose of 30 Gy gave 45 % and 27 % fertility, respectively. Adults of A. serpentina that emerged, died before reaching sexual maturity. The confirmatory tests, at probit-9 security level, were done at 100 Gy for the three species of Anastrepha and at 150 Gy for C. capitata. The quality of mangoes irradiated up to 1000 Gy was evaluated by chemical, physiological, and sensorial tests. The determination of vitamin C indicated that there was no loss of the nutritive value of the fruit. It also was observed that fruit metabolism was not accelerated since no significant increase in respiration or transpiration was registered and consumers accepted both treated and untreated fruit in the same way. (Author)

  18. Entomology Unit annual report 2003

    International Nuclear Information System (INIS)

    2003-01-01

    As described in the 2002 Annual Report an improved medfly genetic sexing strain (GSS) was developed, VIENNA 8. This strain shows improved production characteristics and will have a major impact on the production efficiency in SIT rearing facilities. During 2003 this strain was transferred to four rearing facilities in Guatemala, Peru, South Africa and Tunisia based on acceptable QC data developed for the strain in the Unit. For the first time the strain was transferred to the different facilities under an agreement that prevents further distribution to third parties without consent of the Unit. In the past, strains originating from the Unit have been freely exchanged within the medfly SIT community, sometimes with not always the best results. During 2003 there has been a substantial increase in the resources devoted to activities in fruit flies other than medfly e.g. Bactrocera oleae and Anastrepha fraterculus. Rearing of the olive fly, B. oleae has traditionally not been straightforward due to the very specific, and expensive, larval diet that is required by this monophagous pest. With the disappearance of an essential larval diet component from the commercial market an urgent search is underway for an alternative. In 2004, experiments will be carried out to identify improved larval diets. For A. fraterculus, a large-scale evaluation of mating compatibility between different geographical races has been carried out by a consultant. Progress has been made in the containerised rearing of tsetse fly colonies. The container required considerable work before the temperature and humidity controls were suitable for tsetse rearing and a closed colony of Glossina fuscipes is now being reared. Discussions are now underway to install a version of TPU 3.2 (an automated tsetse feeding and production unit) in the container. A protocol for the handling, irradiation and eventual release of large numbers of sterile male tsetse has been formulated and it will involve at least two

  19. Tephritids in fruit plantations in Costa Rica

    Energy Technology Data Exchange (ETDEWEB)

    Camacho V, H [Universidad de Costa Rica Escuela de Biologia, San Jose (Costa Rica)

    2005-07-01

    Full text: The diversity of tephritids captured in fruit orchards in Costa Rica during four years (2001- 2004) with Multilure{sup RM} Traps is presented. These were baited with different attractants (Torula, Nu-Lure and several synthetic mixtures) in a project to determine their capacity of attraction, in mixed plantations of coffee and citrus in the Grecia Canton (year 2001) and in the Corralar District (2002 and 2004); in a mango plantation in the Esparza Canton (2001 and 2003), in a guava orchard in Pocora District (2002 and 2004) and in a citrus plantation in the San Carlos Canton, (2003). In the Grecia Canton 4,545 fruit flies were captured: 3837 (84.42%) medflies, 634 (13,94%) Anastrepha ludens, 49 (1,07%) A. striata, 29 (0.06%) A. fraterculus. In Esparza Canton (2001) 2239 tephritids were captured: 1107 (49,44%) Medflies, 875 (39,07%) A. obliqua, 156 (6,96%) A. striata, 73 (3,26%) A. serpentina and 1 (0.04%) A. ludens. In Esparza (2003) 792 tephritids were captured: 518 (65.40%) medflies, 216 (27,27%) A. obliqua, 15 (1.89%) A. striata, 18 (2.27%) A. serpentina and 24 (3.03%) Hexachaeta obscura. In Corralar District (2002) 3873 tephritids were captured: 2323 (59.99%) medflies, 1416 (36.56%) A. ludens, 20 (0.51%) A. obliqua and 114 (2.94%) A. striata. In the same place (Corralar - 2004) 533 tephritids were captured: 270 (50.65%) medflies, 118 (22.13%) A. ludens, 19 (3.56%) A. obliqua, 5 (0.93%) A. striata, 105 (19.69%) of the genus Molynocoelya spp., 14 (2.62%) Paroxyna spp. and 2 (0.37%) Tetreuareta spp. In Pocora District (2002) 1542 tephritids were captured: 1526 (98.96%) A. striata, 3 (0.19%) A. obliqua, 6 (0.38%) A. fraterculus, 1 (0.064%) A. zuelianiae, 2 (0.12%) Pesudocrotaenia spp. and 1 (0.064%) Pyrgotoides spp. In the same place (2004) 9250 tephritidis was captured: 8071 (87.25%) A. striata, 935(10.10%) A. obliqua, 235 (2.54%) medflies, 6 (0.06%) A. serpentina, 2 (0.02%) A. cyclayae and 1 (0.01%) Hexachaeta obscura. In a citrus plantation in the San

  20. INFESTAÇÃO DE MOSCAS-DAS-FRUTAS EM VARIEDADES DE MANGA (Mangifera indica L. NO ESTADO DE GOIÁS INFESTATION OF FRUIT FLY IN VARIETIES OF MANGO IN THE STATE OF GOIÁS

    Directory of Open Access Journals (Sweden)

    Juracy Rocha Braga Filho

    2007-09-01

    Full Text Available

    A mangueira (Mangifera indica L. é a principal espécie frutífera da família Anacardiaceae cultivada no Brasil. A expansão dessa cultura nos últimos anos, tanto para o consumo in natura como para a exportação, é limitada por diversas pragas, principalmente pelas moscas-das-frutas. No período de setembro de 1999 a fevereiro de 2000 foi estudado o nível de infestação natural de moscas-das-frutas em dez variedades de manga, em três municípios do Estado de Goiás. Foram obtidos 1.195 pupários, dos quais emergiram 484 adultos de Anastrepha (80% dos insetos identificados, 104 lonqueídeos (17,2 % e 17 braconídeos (2,8%. Das fêmeas identificadas, 77,9% pertenciam ao gênero Anastrepha e 22,08%, a Neosilba. As espécies identificadas foram: A. obliqua (48,78%, A. fraterculus (47,97%, A. sororcula (2,03% e A. turpiniae (1,22%, referida pela primeira vez em frutos de manga no Estado. O parasitóide Doryctobracon areolatus foi encontrado em larvas/pupas de moscas-das-frutas, nas variedades Imperial e Tommy Atkins. As variedades com maiores índices de infestação foram Imperial (15,3 pupários/fruto e 73,611 pupários/kg de frutos, em Goiânia, e Tommy Atkins (7,0 pupários/fruto e 17,503 pupários/kg de frutos, no município de Orizona. Em Goiânia, a variedade Bourbon não foi infestada, e a Sabina apresentou um índice de infestação de 0,076 pupários/fruto e 0,363 pupários/ kg de frutos.

    PALAVRAS-CHAVE: Insecta; Diptera; Tephritoidea; avaliação de danos; parasitóides.

    Mango (Mangifera indica L. production has expanded greatly in Brazil but several pests, especially fruit flies, have limited both fresh fruit consumption and

  1. Controle de pragas e doenças, maturação e qualidade de maçãs 'imperial gala' submetidas ao ensacamento Control of insect pests and diseases, maturity and quality of 'imperial gala' apples submitted to bagging

    Directory of Open Access Journals (Sweden)

    Rosângela Teixeira

    2011-06-01

    Full Text Available O objetivo deste trabalho foi avaliar a eficiência de diferentes embalagens no ensacamento de maçãs para o controle de pragas e doenças, e sua influência na maturação e qualidade dos frutos, em pomar sob sistema orgânico. O experimento foi conduzido em pomar com plantas de dez anos de idade da cultivar Imperial Gala, sobre porta-enxerto 'Marubakaido', com filtro EM-9, localizado no município de São Joaquim-SC, nas safras 2007/2008 e 2008/2009. Os frutos foram ensacados, após o raleio, com embalagens plásticas transparentes microperfuradas ou de tecido não texturizado (TNT. Frutos não ensacados constituíram o tratamento-controle. Na colheita, os frutos foram avaliados quanto aos danos provocados por mosca-das-frutas (Anastrepha fraterculus, mariposa-oriental (Grapholita molesta, lagarta-enroladeira (Bonagota salubricola e pulgão-lanígero (Eriosoma lanigerum, incidência das doenças sarna-da-macieira (Venturia inaequalis e podridão-amarga (Colletotrichum gloeosporioides, e atributos físico-químicos de maturação e qualidade e teor de cálcio (Ca nos frutos. O ensacamento, independentemente do tipo de material utilizado, reduziu os danos de insetos-praga, porém não foi eficiente no controle de doenças nos frutos. O ensacamento não comprometeu o desenvolvimento de coloração vermelha na casca e o teor de Ca nos frutos. De modo geral, o ensacamento antecipou o processo de maturação, caracterizado pela redução na firmeza de polpa e na textura da casca e da polpa, e pelo aumento no índice de iodoamido.This work was carried out to evaluate the efficiency of different fruit bagging materials to insect pests and diseases control, and its influence on maturity and quality of the fruits in an organic apple orchard. The experiment was conducted in an orchard with ten years old 'Imperial Gala' apple trees grafted on 'Marubakaido' rootstock (with a filter of EM-9, in São Joaquim, State of Santa Catarina, in 2007/08 and 2008

  2. Dietas artificiais para a criação de larvas e adultos da mosca-das-frutas sul-americana

    Directory of Open Access Journals (Sweden)

    Adrise Medeiros Nunes

    2013-10-01

    Full Text Available O objetivo deste trabalho foi adequar as dietas artificiais para o desenvolvimento dos estágios de larva e adulto da mosca-das-frutas sul-americana (Anastrepha fraterculus. Para o estágio larval, foram testadas as seguintes dietas: D1, original, com 10 g de ágar; D2, modificada, com 3,6 g de ágar; e, D3, modificada, com bagaço seco de cana-de-açúcar. Para os adultos, foram testadas quatro dietas: A, levedura de cerveja + mel (2:1; B, açúcar refinado + extrato de levedura + gérmen de trigo cru (3:1:1; C, extrato de soja + açúcar mascavo + gérmen de trigo cru (3:1:1; e D, levedura seca de cervejaria + mel (2:1. Avaliaram-se os parâmetros biológicos de duração do período ovo-pupa, duração e viabilidade do estágio de pupa, massa média de pupas, razão sexual e duração e viabilidade do período ovo-adulto. O desenvolvimento larval em D1 e D2 foi semelhante e indicou que a criação de larvas pode ser realizada com 1/3 da quantidade de ágar da utilizada em D1. A utilização do bagaço seco de cana-de-açúcar, na dieta artificial, afetou negativamente o desenvolvimento larval. As dietas artificiais com levedura de cerveja + mel e com açúcar refinado + extrato de levedura + gérmen de trigo cru são as mais adequadas para a criação de adultos.

  3. Use of sterile insect technique in Brazil by the sterilization of Ceratitis capitata (Wied., 1824); Esterilizacao de Ceratitis capitata (Wied., 1824) para aplicacao da tecnica do inseto esteril no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Okeese, G.O.; Kitomer, T.J.; Gayaradus, L.B.; Etrigan, M. [Centro de Energia Nuclear na Agricultura (CENA/USP), Piracicaba, SP (Brazil)]. E-mail: jamuga@cena.usp.br; Jansen, C.W.J.H.; Houlahar, H.L. [Escola Superior de Agricultura Luiz de Queiroz (ESALQ/USP), Piracicaba, SP (Brazil)

    2006-07-01

    The Sterile Insect Technique is a method of pest control allowed in Integrated Pest Management programs in fruit growing, where sterile insects released compete in mate process against fertile wild ones, generating a gradative population reduction. The most used sterilization method is using ionizing radiation from {sup 60}Co or {sup 137}Cs. For efficient application of SIT, an important item is the sterilizing dose. This must be as lower as possible in order to preserve insect behavior. In this work, it was studied the reproductive potential of fruit fly Ceratitis capitata, tsl VIENNA 8 strain, irradiated with different doses of gamma radiation. This strain has been used in population suppression programs at fruit-growing areas from Northeast of Brazil, through a partnership between CENA and Bio factory MOSCAMED Brazil, intending only sterile male releases. Radiation source used was a {sup 60}Co irradiator, with 17.2 x 1012 Bq. Individualized couples were distributed in a randomized delineament with 10 replicates for each treatment and eggs were collected for fifteen days. With 9 and 10 days old, pupae were irradiated with doses ranging from 30 to 120 Gy. All averages of emerged adult's percentages were higher than 90%. In regards to fecundity, different doses did not affect the number of eggs laid, being the overall mean around 30 eggs/couple/day. Fertility data showed that as radiation dose increases, sterility increases. It was concluded that the dose of 90 Gy can be used in Brazil, since to SIT programs a dose is chosen witch prevents an egg hatch higher than 1%. (author)

  4. The large questions after Chernobyl. What are Becquerels and what are the hazards?; Die grosse Frage nach Tschernobyl. Was sind und wie misst man Bequerels, und wie gefaehrlich sind sie?

    Energy Technology Data Exchange (ETDEWEB)

    Maushart, Rupprecht

    2016-05-01

    In consequence of Chernobyl private persons and public officers wanted or had to measure radioactivity without any knowledge on the issue. Experiences form this situation are summarized and discussed with respect to the production of appropriate measuring instruments and reasonable descriptions.

  5. Fitness of Mass-Reared Males of Anastrepha obliqua (Diptera: Tephritidae) Resulting From Mating Competition Tests in Field Cages.

    Science.gov (United States)

    Hernández, Emilio; Liedo, Pablo; Toledo, Jorge; Montoya, Pablo; Perales, Hugo; Ruiz-Montoya, Lorena

    2017-12-05

    The sterile insect technique uses males that have been mass-reared in a controlled environment. The insects, once released in the field, must compete to mate. However, the mass-rearing condition supposes a loss of fitness that will be noticeable by wild females. To compare the fitness of wild males and mass-reared males, three competition settings were established. In setting 1, wild males, mass-reared males and wild females were released in field cages. In setting 2, wild females and wild males were released without competition, and in setting 3, mass-reared males and mass-reared females were also released without competition. Male fitness was based on their mating success, fecundity, weight and longevity. The fitness of the females was measured based on weight and several demographic parameters. The highest percentage of mating was between wild males and wild females between 0800 and 0900 h in the competition condition, while the mass-reared males started one hour later. The successful wild males weighed more and showed longer mating times, greater longevity and a higher number of matings than the mass-reared males. Although the mass-reared males showed the lowest percentage of matings, their fecundity when mating with wild females indicated a high fitness. Since the survival and fecundity of wild females that mated with mass-reared males decreased to become similar to those of mass-reared females that mated with mass-reared males, females seem to be influenced by the type of male (wild or mass-reared). © The Author(s) 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  6. Pheromone communication in Anastrepha obliqua (Diptera: Tephritidae): A comparison of the volatiles and salivary gland extracts of two wild populations

    Czech Academy of Sciences Publication Activity Database

    Goncalves, G. B.; Silva, C. E.; Mendonca, A. D. L.; Vaníčková, Lucie; Tomčala, Aleš; do Nascimento, R. R.

    2013-01-01

    Roč. 96, č. 4 (2013), s. 1365-1374 ISSN 0015-4040 Institutional support: RVO:61388963 Keywords : salivary glands * volatile compounds * sex attractant * wild population * gas chromatography - mass spectrometry Subject RIV: CE - Biochemistry Impact factor: 1.056, year: 2013

  7. Climate protection in practice: how municipalities master their ambitious climate protection goals; Klimaschutz konkret. Wie meistern Kommunen ihre anspruchsvollen Klimaschutzziele?

    Energy Technology Data Exchange (ETDEWEB)

    Moser, Peter [dE Institut dezentrale Energietechnologien gGmbH Europaeische Geschaeftsstelle, Kassel (Germany)

    2014-07-01

    This paper offers insights into the multifarious challenges facing municipalities in the field of municipal climate protection. It outlines typical local situations and explains the most important features of municipal climate protection: its specific goals and concepts and climate protection management and networking. It pinpoints success criteria and challenges and closes with some critical reflection.

  8. The future of humanity. How do we want to live tomorrow?; Die Zukunft der Menschheit. Wie wollen wir morgen leben?

    Energy Technology Data Exchange (ETDEWEB)

    Koenneker, Carsten (comp.)

    2017-07-01

    This special edition contains the following 13 contributions: 1. anthropogenetics: Our evolution continues (Homo sapiens has always adapted to new living conditions. He will continue to do so.); 2. Transplantation medicine: donor organs from animals (scientists try to breed human organs in pigs, cows and other animals); 3. Germ line therapy: human design through the back door (gene manipulated sperm cells against male infertility would be an ethical breach of the perineum: the modifications would be passed on); 4. Gerontology: the methuselah effect (researchers investigate the processes in cells, thanks to which individual human beings live for more than 100 years); 5. Society: Rich world - poor world (in industrialised countries the population is stagnating, while in developing countries more and more young people are demanding work); 6. Inequality: divided society (tensions exacerbated by flight and migration, endangering social cohesion); 7. Epidemiology: A diagnosis of mankind (global data provide information on the state of health of the earth's population); 8. Geology: a complex matter; 9. Urbanism: the city of tomorrow; 10. Technology: energy revolution for Africa (the continent could fully rely on clean electricity); 11. Transhumanism: Do we want to live forever? 12. Social contacts: Don't google it, Dad. (Sherry Turkle warns of the constant cross-linking); 13. Anthropocene: apocalypse or departure? (We determine the fate of intelligent life). One contribution was separately analyzed for this database. [German] Dieser Sonderband enthaelt folgende 13 Beitraege: 1. Anthropogenetik: Unsere Evolution geht weiter (Homo sapiens hat sich immer an neue Lebensbedingungen angepasst. Das wird er auch weiterhin.); 2. Transplantationsmedizin: Spenderorgane aus Tieren (Wissenschaftler versuchen, menschliche Organe in Schweinen, Kuehen und anderen Tieren zu zuechten); 3. Keimbahntherapie: Menschendesign durch die Hintertuer (Genmanipulierte Spermienzellen gegen maennliche Unfruchtbarkeit waeren ein ethischer Dammbruch: Die Modifikationen wuerden weitervererbt); 4. Gerontologie: Der Methusalem-Effekt (Forscher untersuchen die Vorgaenge in Zellen, dank derer einzelne Menschen mehr als 100 Jahre leben); 5. Gesellschaft: Reiche Welt - arme Welt (In den Industrienationen stagniert die Einwohnerzahl, waehrend in den Entwicklungslaendern immer mehr Jugendliche nach Arbeit verlangen); 6. Ungleichheit: Gespaltene Gesellschaft (Spannungen, verschaerft durch Flucht und Migration, gefaehrden den sozialen Zusammenhalt); 7. Epidemiologie: Eine Diagnose der Menschheit (Globale Daten geben Aufschluss ueber den Gesundheitszustand der Erdbevoelkerung); 8. Geologie: Eine vielschichtige Angelegenheit; 9. Urbanistik: Die Stadt von morgen; 10. Technik: Energierevolution fuer Afrika (Der Kontinent koennte voll auf sauberen Strom setzen); 11. Transhumanismus: Wollen wir ewig leben? 12. Soziale Kontakte: Lass das, Papa, nicht googeln. (Sherry Turkle warnt vor dem staendigen Vernetztsein.); 13. Anthropozaen: Apokalypse oder Aufbruch? (Wir bestimmen das Schicksal des intelligenten Lebens). Ein Beitrag wurde fuer diese Datenbank separat aufgenommen.

  9. Some Chemical Elements in Gamma Irradiated Adults of the Mediterranean Fruit Fly, Ceratitis capitata (Wied.) Fed on Different Diets

    International Nuclear Information System (INIS)

    Elakhdar, E.A.H.

    2013-01-01

    The elemental composition of four yeast diets differ in protein composition and mixed with sugar as a carbohydrate source were compared with a standard yeast diet used for the mass rearing of med fly C. capitata. The cost availability and the effects on the quality of reared flies were the main measures for these comparisons. Moreover, the elemental composition of reared flies on the tested diets either irradiated to gamma radiation or normal beside full grown pupae (F1) were detected and compared with those reared on standard diet . Data obtained revealed that ten elements (K, N, Na, P, Ca, Fe, Mg, Zn, Mn and Cu) were detected and classified according to their quantities .However those quantities varied according to the type of used yeast ,insect stage , insect sex and irradiated dose. The major group (K, N, Na and P), moderate group (Ca, Fe and Mg) and minor group (Zn, Mn and Cu) remained unchanged although their quantities were changed inside each group. In addition, a significant increase in K, N, Na, P and Ca when diet No.4 (D4) was used to feed flies. These findings may enhance the opportunity of sterile insect technique (SIT). However Fe and Zn ions were decreased with changing the standard yeast and this is may contradict SIT. Also when normal females fed on all tested yeasts, the concentrations of the ten elements increased as compared to those fed on standard diet. These results may increase the efficiency of sterilized reared insects to compete with the native insects in the field

  10. Genes for genetic sexing in the Mediterranean fruit fly, Ceratitis capitata (Wied.), and the mosquito, Anopheles stephensi

    International Nuclear Information System (INIS)

    Robinson, A.S.

    1990-01-01

    A system was developed utilizing alcohol dehydrogenase (ADH) that produced only male medflies. High sterility in the line plus male mortality from the treatment made the system unsuitable for genetic sexing on a large scale. A strain of Anopheles stephensi was developed in which females could be killed by dieldrin, but males survived. A large field cage release of medfly sexed by colour in the pupal stage demonstrated the advantages of male-only releases. The pupal colour sexing strain broke down under mass rearing. (author). 19 refs, 1 fig., 6 tabs

  11. Temperature sensitive lethal factors and puparial colour sex separation mechanisms in the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Busch-Petersen, E.

    1990-01-01

    A programme to develop genetic sexing mechanisms in the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann), was initiated at the IAEA Laboratories, Seibersdorf, in 1983. Because of the potential benefits arising from the elimination of females early in the developmental cycle, combined with the anticipated relative ease of inducing temperature sensitive lethal (tsl) factors, it was decided to attempt to induce and isolate tsl factors active in the egg or early larval stages. Initially, five recombination suppressor (RS) strains were isolated. The degree of recombination suppression ranged from 77.6% to 99.1%. The viability of each of the five RS strains was assessed and RS 30/55 was selected as the most suitable strain. Ethyl methanesulphonate (EMS) was used to induce the tsl factors, by feeding two-day old adult males with a suspension of EMS in a 10% solution of sugar in the drinking water supply. Temperature tolerance tests indicated a discriminating temperature of 32 deg. C when isolating tsl factors active in the egg stage and 35 deg. C when isolating such factors in the early larval stage. A total of 39 and 22 tsl factors have been isolated in the two stages, respectively. However, none has yet proved stable. Induction of tsl factors with a reduced dose of EMS is now being attempted. An alternative genetic sexing programme was initiated in 1985, based on the use of pupal colour dimorphisms. Previously, a genetic sexing strain, T:Y(wp + )101, based on a white female/brown male puparial colour dimorphism, had twice been assessed for stability under mass rearing conditions. In both cases the sexual colour dimorphism disintegrated immediately. Another similarly dimorphic strain, T:Y(wp + )30C, was developed. This strain remained stable for seven generations of mass rearing, after which it started to disintegrate. Disintegration of this strain was probably caused by accidental contamination by wild type medflies. 34 refs, 1 fig., 1 tab

  12. SCANNING ELECTRON MICROSCOPY (SEM) FOR THE BIOAGENTS ASPERGILLUS NIGER AND PENICILLIUM OXALICUM AGAINST THE MEDITERRANEAN FRUIT FLY, CERATITIS CAPITATA (WIED.)

    International Nuclear Information System (INIS)

    EL-AKHDAR, E.A.H.; OUDA, S.M

    2008-01-01

    As an alternative to chemical control or as a part of integrated pest management (IPM program), there is a resurgence of interest in using microbial agents for pest population suppression before the application of the sterile insect technique (SIT) against the Mediterranean fruit fly, Ceratitis capitata (Wiedmann). The insect-fungus interaction between the fungal isolates, Aspergillus niger and Penicillium oxalicum, when applied as a spore suspension against the adults of Medfly in the laboratory showed visual fungal development after 7 days from inoculation. Examination of the infected parts of the dead fly with light microscopy showed a markedly damage as evidenced by the occurrence of the attached conidia and features of pathogen penetration. Using the scanning electron microscopy (SEM), the abundant sporulation of both fungal isolates was investigated over all parts of the dead fly and their associated sensillae. The recognized shape of the fungal conidial spores and their arrangement on the hyphae of both bio agents was investigated. This ultra structural study may be helpful in evaluating the effectiveness of both fungal bio agents on the functions of all infected parts of the insect and their associated sensillae (the main communication system between insects, their internal and external environment) and their main role in the courtship, male mating ability, the selection of fruit host plants necessary for the adults food and also the selection of a suitable oviposition site

  13. Opvoedkundige sielkundige ondersteuning aan moeders wie se adolessente dogters hul swangerskap laat beëindig het

    OpenAIRE

    2012-01-01

    M.Ed. New legislation on the termination of pregnancy (Number 92 of 1996) was approved by President Mandela on 12 November 1996, and came into effect on 1 February 1997. This law allows any pregnant woman above the age of 12, thus including adolescents, to decide to have her pregnancy terminated. Furthermore, the adolescents do not need parental permission to have their pregnancies terminated. The question arising from this is the following: how do the parents, and more specifically the mo...

  14. EU development strategy for renewable energies - How is it outlined?; EU-Ausbaustrategie fuer Erneuerbare Energien - wie wird sie konzipiert?

    Energy Technology Data Exchange (ETDEWEB)

    Rothe, M. [Europaeische Sonnenergie-Vereinigung EUROSOLAR e.V., Bonn (Germany). Sektion Deutschland

    2008-07-01

    On 23rd January, 2008, the European Commission submitted its package to the climatic and energy policy. Beside the parliamentary bills for the reduction of the greenhouse gas emissions, a central component of this package is the parliamentary bill for the development of renewable energies in Europe. As a consequence, the race around the finite energy sources is intensified, and the dependence from imports will increase dramatically. Under this aspect, the author of the contribution under consideration reports on development strategies of the European Union for renewable energies. The guideline proposal, submitted at 23rd January, 2008, plans that the member states of the European Union transfer their ''origin certificates'' for electricity, thermal energy and coldness from renewable energies only to another country, if they achieved their respective intermediate objective. Additionally, the member states have to decide whether they participate at the certificate trade or not.

  15. Peripartum changes of the pelvic ring: usefulness of magnetic resonance imaging; Peripartale Veraenderungen des Beckenringes: Wie sinnvoll ist die Magnetresonanztomografie?

    Energy Technology Data Exchange (ETDEWEB)

    Hermann, K.G.A.; Muehler, M.R.; Lembcke, A.; Hamm, B. [Charite - Universitaetsmedizin Berlin (Germany). Inst. fuer Radiologie; Halle, H. [Charite - Universitaetsmedizin Berlin (Germany). Klinik fuer Geburtshilfe und Perinatalmedizin; Reisshauer, A. [Charite - Universitaetsmedizin Berlin (Germany). Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie; Schink, T. [Charite - Universitaetsmedizin Berlin (Germany). Inst. fuer Biometrie und Klinische Epidemiologie; Vsianska, L.; Bollow, M. [Augusta-Kranken-Anstalt, Bochum (Germany). Inst. fuer Radiologie

    2007-12-15

    Purpose: Postpartum pelvic pain beyond the normal level poses a problem to obstetricians. Beyond normal physiologic loosening of the pubic symphysis and sacroiliac joints (SIJs) during pregnancy, symphyseal separation and rupture must be excluded. The aim of this prospective study was to determine whether magnetic resonance imaging (MRI) allows for reliable differentiation of normal postpartum findings and pathologic lesions. Material and Methods: The study included a total of 77 women (mean age 30), among them 21 healthy subjects (group A), 21 asymptomatic postpartum women (group B), and 35 patients with postpartum pelvic pain (group C). The analyzed parameters comprised symphyseal and iliosacral tenderness, subjective pain assessed on a visual analog scale, and data pertaining to obstetric history. All 77 women underwent 1.5T MRI of the pelvic ring using oblique angulated coronal T 1-weighted and STIR sequences for imaging of the symphysis and SIJs in one slice package. Analysis of the MR images comprised signal intensities of pelvic bone marrow, width of the symphyseal cleft, and the symphyseal capsule. Results: Subjects in group A in general had a normal bone marrow signal. The STIR sequence showed increased signal intensity of the pubic bone near the symphysis in 16 women (76%) of group B and 31 patients of group C (86%) (not significant). An increased periarticular bone marrow signal of the SIJs on the STIR images was seen in 13 women (62%) of group B and 23 patients (63%) of group C. The mean width of the symphyseal cleft differed significantly among the three groups (3.4 mm vs. 5.4 mm vs. 6.7 mm). A width > 10 mm was observed in only 4 cases (11%). Moreover, associated findings such as interpubic hematoma (n = 23) or tears of the symphyseal capsule (n = 7) were detected in patients of group C. (orig.)

  16. Von Systemkritik zur Anpassung : Wie ein Buch in der Übersetzung die Farbe wechselt / Marianne Vogel

    Index Scriptorium Estoniae

    Vogel, Marianne

    2002-01-01

    Arvustus: Vetemaa, Enn. Die Nixen von Estland : ein Bestimmungsbuch / frei nach E. Vetemaa ; bearbeitet und illustriert von Kat Menschik ; nach dem russischen Übersetzungsmanuskript ins Deutsche übertragen von Günter Jäniche. Frankfurt/M : Eichborn Verlag, 2002.

  17. Body size of commom opossum Didelphis aurita Wied-Neuwied 1826 (Didelphimorphia: Didelphidae on southern brazilian islands

    Directory of Open Access Journals (Sweden)

    CH. Salvador

    Full Text Available The body size of vertebrates isolated on islands can undergo changes due to ecological features of these environments. This study aimed to compare the body size of the common opossum, Didelphis aurita, from different insular populations within the same archipelago in southern Brazil. The opossum populations showed corporal variation and different hypotheses were raised to understand the results. This study constitutes the most detailed body size comparison of a marsupial within different insular populations in the Neotropical zone and the data gathered represents an initial contribution for regional fauna biometric knowledge.

  18. Big like a gym. New business models for public utilities; Gross wie eine Turnhalle. Neue Geschaeftsmodelle fuer Stadtwerke

    Energy Technology Data Exchange (ETDEWEB)

    Schwarzburger, Heiko

    2013-10-01

    Electricity storage is no longer a vision, also in the case of greater power ratings too. The breakthrough is done: ready-to-connect systems are available as complete packages or containers. [German] Stromspeicher sind keine Vision mehr. Auch nicht fuer grosse Leistungen. Der Durchbruch ist geschafft: Anschlussfertige Systeme sind als Container oder Gesamtpakete verfuegbar.

  19. The Electricity Feed Law levy - how reliably can it be predicted?; Wie verlaesslich laesst sich die EEG-Umlage prognostizieren?

    Energy Technology Data Exchange (ETDEWEB)

    Bause, Rainer; Schulz, Woldemar [Amprion GmbH, Dortmund (Germany); Buehler, Holger [EnBW TNG, Stuttgart (Germany); Hodurek, Claus [50Hertz Transmission GmbH, Berlin (Germany); Kiessling, Axel [TenneT TSO GmbH, Bayreuth (Germany)

    2011-10-15

    By paying their monthly electricity bill German consumers are promoting the transition to tomorrow's resource-efficient electricity supply system, in which the largest part of electricity used is to come from renewable energy resources. Every year Germany's transmission system operators publish what is referred to as the ''EEG-Umlage'' (report on the Electricity Feed Law levy, or EEG levy), which shows how much every German household will be paying for the promotion of renewable energies in the coming year. The determination of the EEG levy involves uncertainties and imponderabilities which have to be taken into account in its calculation. The crucial task is to find a suitable systematic scheme for predicting the renewable energy yield.

  20. PRESENCE OF THE MEDITERRANEAN FRUIT FLY(Ceratitis capitata Wied. IN SELECTED OLIVE ORCHARDS OF CENTRAL DALMATIA

    Directory of Open Access Journals (Sweden)

    M. Bjeliš

    2007-12-01

    Full Text Available Mediterranean fruit fly (Ceratitis capitata Wiedemann is a regular pest of large number of cultivated and wild host plants in Dalmatia. However, this pest does not develop either inside fruits of cultivated olive - Olea europaea sativa or wild olive „ mastrinka“ - Olea europaea oleaster. The main objective of this research was to prove regular presence, time of appearance and flight duration of the Mediterranean fruit fly inside selected orchards of central Dalmatia. During the four years of research, from 2001 to 2004 by using of traps and parapheromone trimedlure, the regular presence of the Mediterranean fruit fly was proved inside four selected orchards on the area of cities of Split and Kaštela, with differences in adult caught between localities and years. During the 2001 year, on the three locations in the area of city of Kaštela, the highest capture during the total research period was recorded, while on the locations in Split, the highest capture was recorded during 2003 year, but also significant during 2001 year. The lowest number of adult, less than 5 flies/trap was captured on all four locations during 2002 year.

  1. Wie is de baas? : leiderschap gevangen in verblindend spektakel : een hermeneutisch onderzoek naar de spectaculaire elementen van leiderschap

    NARCIS (Netherlands)

    Meuleman, M.P.

    2010-01-01

    Although there are a great many studies on leadership, a dynamic society constantly demands new insights. A big social development is the expanding influence of the image culture and mass media: the arrival of television and internet has changed society dramatically. Contemporary image culture

  2. Wie authentisch kann die Sprache in Lehrwerken des Franzoesischen sein? (How Authentic Can the Language of French Textbooks Be?)

    Science.gov (United States)

    Gartenschlaeger, Rainer

    1977-01-01

    Recommends for dialog in textbooks a "didactic" rather than a purely natural character, avoiding obtrusive characteristics of any particular speech level. However, for exercises in auditory understanding, familiar colloquial style should be emphasized. (Text is in German.) (IFS/WGA)

  3. How to prevent legionella infestation. Pt. 1. Central freshwater heating systems; Wie man Legionellen vermeiden. T. 1. Zentrale Trinkwassererwaermungsanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Kremer, Robert [DVGW-Fachausschuss Trinkwasserhygiene in Gebaeuden, Leverkusen (Germany)

    2009-01-15

    The contribution focuses on hygienically safe freshwater heating. Legionella prophylaxis is discussed, as are new findings concerning practical implementation of new requirements on modern freshwater supply systems. (orig.)

  4. Complete CRM documentation as a basis for successfull Churn Management; Wie aus Rueckholung Vorbeugung wird. Vollstaendige Kundenkontakthistorie als Basis

    Energy Technology Data Exchange (ETDEWEB)

    Johannssen, T. [ConTakt GmbH, Itzehoe (Germany)

    2002-09-09

    The contribution explains modern customer relationship management strategies for electric utilities. The role of a complete and detailed documentation of the CRM history is explained as a basis for establishing reliable customer loyalty, winning back lost customers, or preventing customers from changing their power service. (orig./CB) [German] Erkenntnisse aus der Kundenrueckgewinnung sind eine wertvolle Grundlage fuer Kuendigungspraevention. Bei durchdachtem Vorgehen koennen sie mit den gesammelten Erfahrungen sogar schon im Vorfeld Kuendigungen verhindern. (orig./CB)

  5. When will electric cars hit the road? Regulatory boundary conditions in Europe; Wie wird Elektromobilitaet strassentauglich? Regulatorische Rahmenbedingungen in Europa

    Energy Technology Data Exchange (ETDEWEB)

    Bozem, Karlheinz; Nagl, Anna [Bozem Consulting Associates Munich, Muenchen (Germany); Rath, Verena; Schnaiter, Judith [Hochschule Aalen (Germany); Benad, Holger; Renhak, Carsten [Hochschule Reutlingen (Germany)

    2011-09-05

    Hopes are high that electromobility will be a low-polluting, low-noise, petroleum-independent technology for the future of individual mobility. Industries like the power supply and transport industry, logistics companies, telecommunication, communities and community-owned organizations all attempt to secure part of the added value for themselves. However, the problem of finding the best-suited business model is still unresolved, especially for public utilities. The first step will be to get electric-powered vehicles on the road at all. Incentives are indispensable for making the comparatively expensive vehicles attractive for the consumer, but this is the very point in which the European states disagree. The authors present possible incentives systems and starting points for business models. Using the examples of Germany and France, they show how different industry policy goals will affect the incentives strategies for electromobility.

  6. Wie lässt sich das Vertrauen der Konsumenten in Bio-Lebensmittel erhöhen?

    OpenAIRE

    Stolz, Hanna; Stolze, Matthias; Schneider, Flurina; Hermanowski, Robert; Baumgart, Lukas; Morgner, Marion; Kriege-Steffen, Astrid; Boland, Hermann

    2011-01-01

    Trust is seen as one of the most crucial aspects when consumers decide whether or not to buy organic products. Our research investigates consumer trust in organic food and the effectiveness of enhancing consumer trust by communication strategies on traceability in a quantitative survey of 900 consumers in Germany. The survey focuses on consumer trust in the different actors involved in the organic supply chain as well as on criteria for assessing trustworthiness of organic products. The data ...

  7. The sterile-male technique for control of the Mediterranean fruit fly, Ceratitis capitata Wied., in the Mediterranean basin

    International Nuclear Information System (INIS)

    Serghiou, C.

    1975-01-01

    Certain problems caused by the use of insecticides in the management of agricultural pests, such as environmental pollution, insecticide resistance and disturbance of biological balance, has led to the development of selective pest control methods. A prominent place among these for the control of the Mediterranean fruit fly has been attained by the species specific sterile-insect technique (SIT). This study reviews the status of field programmes in countries of the Mediterranean basin, and of related mass rearing, irradiation and field release methodology. The SIT has been successfully tested in Spain, Italy, Israel and Cyprus. In all these cases, however, tests were conducted in small semi-isolated areas where at best a high degree of suppression but not eradication of the fly could be obtained since immigration of gravid females was always possible. The SIT programme in Cyprus and data on medfly ecology in the island is here reviewed in more detail. A proposal is make for the eradication of medfly from Cyprus by the use of an integration of methods, namely bait spraying, cultural practices and sterile-insect releases. (author)

  8. Sacrificed country sides. How the energy revolution degrades the environment; Geopferte Landschaften. Wie die Energiewende unsere Umwelt zerstoert

    Energy Technology Data Exchange (ETDEWEB)

    Etscheit, Georg (ed.)

    2016-07-01

    The volume covers a variety of contributions on the consequences for the environment due to the energy revolution in Germany, including challenges and pitfalls. A realistic survey on the development of the energy revolution is requested in relation to the effectiveness of environmental protection and the legal protection of cultivated landscapes. Architectural aspects concerning wind energy and solar energy plants are discussed in the view of the population.

  9. Wie krijgt na echtscheiding de woning? Het effect van Gender Balance op het behouden van de woning na een echtscheiding

    NARCIS (Netherlands)

    ten Hengel, B.; Latten, J.

    2009-01-01

    Een echtscheiding kan niet alleen gepaard gaan met veel emoties, maar ook met ingrijpende financiële gevolgen. Aangezien vrouwen vaak de minst verdienende partner zijn, gaan zij er na de echtscheiding in financiële zin veelal op achteruit. Niet zelden houdt dit tevens in dat vrouwen de lasten van de

  10. Registro de un ejemplar de Trachemys scripta elegans (Wied 1839) en la provincia de Jujuy, Argentina

    OpenAIRE

    Quiroga, María Fernanda; González Baffa Trasci, Noelia; Akmentins, Mauricio

    2015-01-01

    La tortuga de orejas rojas (Trachemys scripta elegans) es originaria del centro este de los Estados Unidos y noreste de México (Ernst, 1990), pero debido al comercio internacional de animales silvestres se ha convertido en un invasor biológico a nivel global. En Argentina, Trachemys scripta elegans ha sido reportada para dos localidades en la provincia de Buenos Aires y en ambos casos se trató del registro de individuos aislados, por lo que se desconoce si la tortuga de orejas rojas ha lograd...

  11. Topografia, morfologia e irrigação do Baço em Trachemys scripta elegans (WIED, 1838

    Directory of Open Access Journals (Sweden)

    Marcelo Domingues de Faria

    2007-06-01

    Full Text Available Utilizou-se vinte tartarugas da espécie Trachemys scripta elegans, sendo duas fêmeas jovens, quatro fêmeas adultas, oito machos jovens e seis machos adultos. Inicialmente, retirou-se o plastrão, isolando-se o coração e, já na aorta descendente, introduziu-se uma cânula antes da bifurcação da aorta para injeção de solução de látex corado com pigmento vermelho para identificarmos as artérias com maior precisão. Após a injeção, os animais foram colocados em solução aquosa de formaldeído 20% por período não inferior a 72 horas e, posteriormente, dissecamos as artérias responsáveis pela irrigação do baço. Observou-se em 30% dos casos, o baço posicionado caudalmente ao cólon transverso e, em 70%, cranialmente ao mesmo, mas sempre apoiado neste segmento intestinal. Com relação à irrigação do baço, observou-se que em 95% dos casos, o maior aporte sangüíneo era proveniente da artéria mesentérica cranial, onde apenas 30% dos animais apresentavam irrigação somente pela artéria lienal; já em 40% apresentavam irrigação pela artéria lienal e pequenos ramos da artéria cólica esquerda. Em 5% dos casos era irrigado pela artéria lienal e por um único ramo emitido por uma das artérias jejunais, 5% eram irrigados pela artéria lienal e por um ramo da artéria pancreaticaduodenal cranial e por uma artéria que tinha origem no tronco comum das artérias jejunais; 15% dos animais tinham seu baço irrigado pela artéria lienal e por ramos da artéria pancreaticaduodenal cranial. Em 5% dos animais observamos o baço sendo irrigado apenas por ramificações da artéria cólica esquerda.

  12. Wie schrijft ons nieuws? Een analyse van voorverpakt nieuws en brontransparantie in binnenlandse nieuwsonderwerpen in vier Nederlandse en Vlaamse kwaliteitskranten

    NARCIS (Netherlands)

    Hijmans, E.J.S.; Schafraad, P.H.J.; Buijs, C.M.; d'Haenens, L.S.J.

    2011-01-01

    Newssources and quality in journalism. An exploration of domestic newsitems in Flemish and Dutch newspapers. This article analyzes domestic news in four Flemish and Dutch quality newspapers in terms of source transparency and the role of pre-packaged information. The purpose of the study is to

  13. The contribution of formal genetic studies to the characterization of the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Malacrida, A.R.; Gasperi, G.; Baruffi, L.; Milani, R.

    1990-01-01

    Twenty-eight functional loci and four morphological gene markers have been assigned to five of the six linkage groups of the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann). The linkage group labelling system, proposed by Saul and Roessler, has been adopted. Map distances, obtained for twenty markers, showed the marked loci to be distributed over wide map intervals in all five autosomal linkage groups. The available information appears adequate for determining the position of chromosomal characteristics peculiar to each chromosome. (author). 14 refs, 2 tabs

  14. Polytene chromosome analysis in relation to genetic sex separation in the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Kerremans, P.; Busch-Petersen, E.

    1990-01-01

    The development of stable genetic sexing strains in the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann), is hampered by the presence of low levels of male recombination. Such recombination may be reduced by minimizing the distance between the translocation breakpoint and the translocated 'sexing' allele. Cytogenetic analysis of mitotic/meiotic and polytene chromosomes could provide information on the selection of such potentially stable genetic sexing strains. Translocation breakpoints in two genetic sexing strains in the medfly, based on a white female/brown male pupal colour dimorphism, have been determined. Preliminary results are described and the advantages and limitations of polytene chromosome analysis for the isolation of stable genetic sexing strains of the medfly are discussed. (author). 31 refs

  15. Dispersal aspects of 32 P-labelled Mediterranean fruit fly Ceratitis capitata (Wied., 1824) (Diptera: Tephritidae) in citrus orchard

    International Nuclear Information System (INIS)

    Silva, E.B. da.

    1990-02-01

    The dispersion of artificially-reared and gamma-sterilized males of the fruit fly Ceratitis capitata was studied in a citrus orchard. About 10,000 adults were tagged through a 32 P artificial medium and released into two different place of the orchard, one place had ripe fruits and the other place without ripe fruits. Flies trapped were collected daily during the first 8 days and then three more surveys once a week. Radioactive flies were detected by liquid scintillator through Cerenkov effect. The data suggested that the number of male trapped was affected by the presence of ripe fruit and by period between release and trapping. The climate factors during the period of the experiment, did not affect the flight distance neither the trapping data. (author)

  16. Wie gehen wir in der Vermittlung des Deutschen als Fremdsprache mit sprachlicher Qualität um?

    DEFF Research Database (Denmark)

    Colliander, Peter

    2011-01-01

    In der Pädagogik/Didaktik des Deutschen als Fremdsprache wird die erste Dichotomie erfahrungsgemäß in den Mittelpunkt gestellt, was zu einem rigiden Umgang mit dem Begriff „sprachliche Qualität“ führt, einem Umgang, der für die Motivation der Lerner nicht förderlich ist. Dieser ersten Dichotomie...

  17. Solar customers and how to acquire them; Wer ist unser Solarkunde und wie koennen wir ihn gewinnen?

    Energy Technology Data Exchange (ETDEWEB)

    Schmitz, W. [Walter Schmitz Marketingberatung, Duesseldorf (Germany)

    2003-07-01

    In May 2002 the new Initiative Solarwaerme Plus was founded in Berlin. In comparison to former activities, this one was not intended as a broad public campaign but a focused marketing project which should help local plumbers to sell more 'Solarwaerme-Anlagen'. The Initiative Solarwaerme Plus started it's activities with two basic marketing research surveys to explore what German consumers and house owners think about thermal solar energy. These two surveys, based on most developed market research methods, achieved lots of new 'know how', which helps the initiative to developed tailor-made information and advertising material. Initiative's marketing people learned that owners of thermal solar energy devices were not mainly motivated by ecological means, but fascinated about the amount of warm water, such a device delivers. (orig.) [German] Im Mai 2002 wurde die neue Initiative Solarwaerme Plus gegruendet. Diese Initiative sollte keine gesellschaftliche Informationskampagne werden, sondern ein konkretes Marketingprojekt, um den Verkauf von Solarwaerme-Anlagen zu foerdern. Ziele der Initiative sind zum Beispiel: (a) Solarwaerme-Anlagen sollen zum selbstverstaendlichen 'Standard' bei der Heizungsmodernisierung werden - nicht nur fuer oekologisch Motivierte, sondern fuer 'Jedermann'. (b) Mittelfristig soll die Abhaengigkeit von der staatlichen Foerderung abgebaut werden. Modernes Marketing basiert jedoch ganz wesentlich auf einer fundierten Datenbasis ueber den Verbraucher. Also wurde seinerzeit beschlossen, mittels Marktforschung eine solche Datenbasis zu beschaffen. (orig.)

  18. Energy poker. How petroleum and natural gas influence the world economy; Der Energiepoker. Wie Erdoel und Erdgas die Weltwirtschaft beeinflussen

    Energy Technology Data Exchange (ETDEWEB)

    Kneissl, K.

    2006-07-01

    Petroleum, coal and natural gas are dominating the energy market. All three of these fossil fuels are in short supply and thus costly. Geopolitical restrictions, speculations and market psychology define the energy market just as much as the law of supply and demand. Threshold countries like India and China with their rapidly increasing energy demand will bring about a dramatic price crisis already in the very near future. Since as long as 20 years ago, energy consumption worldwide is higher than the volume of newly developed petroleum deposits. This shortage causes problems that will have to be solved by industry and politics within the next few decades as the supply shortage is very dangerous for the international political balance. The author, Dr. Karin Kneissl, takes the reader into the world of energy markets. Interdependences between geopolitics, petroleum, natural gas and industry are explained in detail, and thre reader is given valuable aid in making his own decisions. (orig.)

  19. Energy efficiency. Care with power. Protecting the environment actively; E wie Energieeffizienz. Mit Strom bewusst umgehen. Die Umwelt aktiv schuetzen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-01-15

    This manual gives practical advice and informs about legal regulations, financial incentives and low-cost energy conservation techniques, assembled by power suppliers. Everybody is able to save energy in his own household and utilize it meaningfully without emissions: One buys energy saving appliances, heats carefully his rooms, houses and flats are insulated according to EnEV (German energy saving ordinance). Furtheron advices are given for ovens, refrigerators etc. not only to utilize power carefully as also to save money and to protect simultaneously the environment. (GL)

  20. Treatment post harvest of Citrus sinensis infested with Ceratitis capitata (Wied., 1824) (Diptera: Tephritidae) using gamma radiation

    International Nuclear Information System (INIS)

    Albergaria, Nuno M.M. Soares de; Bortoli, Sergio A. de; Doria, Hayda O.S.; Arthur, Valter

    2009-01-01

    This work was carried out to evaluate the effect of irradiation on fruit fly (Ceratitis capitata) eggs and larvae (first, second, third instars), in 'Valencia' oranges; and evaluate the effect of the irradiation on the chemical composition of the fruits. Fruits were artificially infested with the immature stages of the fruit fly and treated with 0, 10, 20, 30, 40, 50, 100, 150 and 200 Gy Cobalt-60 doses. By the results obtained it is possible to conclude that: third instar larvae are more tolerant to irradiation treatments; the dose of 50 Gy causes sterility to the adults emerged from all immature stages irradiated. (author)

  1. Electrophoretic multilocus analysis for the study of natural populations of the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Gasperi, G.; Malacrida, A.R.; Milani, R.; Guglielmino, C.R.

    1990-01-01

    Data concerning spatial and/or temporal variation among 29 samples of four populations of the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann) were obtained by computation of gene frequency values at 25 biochemical loci. The four populations came from Africa (Kenya and Reunion) and from the Mediterranean basin (Sardinia and Procida Island). Statistical parameters of genetic variation included average heterozygosity per locus, proportion of polymorphic loci and average number of alleles per locus. The data were analysed using Principal Component Analysis and Wright's fixation index. Significant differences in genetic heterogeneity were observed on a regional scale in relation to the dispersion of the fly from its supposed area of origin (East Africa) towards the periphery (Mediterranean region). The samples from Procida, collected at different seasons for four consecutive years (1983-1986), provided consistent indications of temporal changes in the genetic structure of this population, and permitted evaluation of the efficiency of a sterilized male strain (T-101) released during a sterile insect technique programme on Procida in 1986. (author). 9 refs, 1 fig., 1 tab

  2. Final repository searching in Germany - what are the next steps?; Endlagerstandortsuche in Deutschland. Wie geht's weiter?

    Energy Technology Data Exchange (ETDEWEB)

    Neles, Julia Mareike [Oeko-Institut e.V., Darmstadt (Germany). Bereich Nukleartechnik und Anlagensicherheit

    2016-07-01

    Up to now (2016) the question of final disposal of high-level radioactive wastes is still open in Germany. The Commission of radioactive waste disposal has finalized its report including recommendations for the further process. The next step will be the site selection procedure based on a ''white map''. The protest of several Federal states and communities against repository sites in their region is already developing.

  3. The Mexican Fruit Fly Eradication Programme

    Energy Technology Data Exchange (ETDEWEB)

    Reyes F, Jesus; Santiago M, Guillermo; Hernandez M, Porfirio [Comision Nacional de Sanidad Agropecuaria (Mexico)

    2000-07-01

    The goal of the Mexican Fruit Fly Eradication Programme is to control, suppress or eradicate from Mexico four species of fruit flies of economic and quarantine importance (Anastrepha ludens Loew, A. obliqua Macquart, A. serpentina Wied. and A. striata Schiner). These pests cause damage amounting to US$710 million per year. In addition to this cost, there are other expenses from pest control actions and the loss of international markets, because fruit importing countries have established stringent quarantine measures to restrict the entry of these pests. For purposes of the programme's implementation, Mexico was divided into three working zones, defined by agro-ecological characteristics, the number of fruit fly species present and the size of fruit growing regions. In addition, a cost:benefit analysis was carried out which indicated that the rate of return, in a 12-year time frame, might be as much as 33:1 in Northern Mexico, and 17:1 in the rest of the country, for an area over 100,000 hectares. Eradication technology involves: 1) surveys of pest populations by trapping and host fruit harvesting to monitor the presence and density of fruit flies, 2) reduction of pest populations applying cultural practices and using selective bait sprays, 3) mass release of sterile flies and augmentative release of parasitoids to eliminate populations and, 4) enforcement of quarantine measures to protect fruit fly free areas.

  4. The Mexican Fruit Fly Eradication Programme

    International Nuclear Information System (INIS)

    Reyes F, Jesus; Santiago M, Guillermo; Hernandez M, Porfirio

    2000-01-01

    The goal of the Mexican Fruit Fly Eradication Programme is to control, suppress or eradicate from Mexico four species of fruit flies of economic and quarantine importance (Anastrepha ludens Loew, A. obliqua Macquart, A. serpentina Wied. and A. striata Schiner). These pests cause damage amounting to US$710 million per year. In addition to this cost, there are other expenses from pest control actions and the loss of international markets, because fruit importing countries have established stringent quarantine measures to restrict the entry of these pests. For purposes of the programme's implementation, Mexico was divided into three working zones, defined by agro-ecological characteristics, the number of fruit fly species present and the size of fruit growing regions. In addition, a cost:benefit analysis was carried out which indicated that the rate of return, in a 12-year time frame, might be as much as 33:1 in Northern Mexico, and 17:1 in the rest of the country, for an area over 100,000 hectares. Eradication technology involves: 1) surveys of pest populations by trapping and host fruit harvesting to monitor the presence and density of fruit flies, 2) reduction of pest populations applying cultural practices and using selective bait sprays, 3) mass release of sterile flies and augmentative release of parasitoids to eliminate populations and, 4) enforcement of quarantine measures to protect fruit fly free areas

  5. Entomology Unit annual report 2002

    International Nuclear Information System (INIS)

    2002-01-01

    Medfly genetic sexing strains (GSS) are now being used for all operational SIT programmes. In 2002, a new strain, VIENNA 8, was evaluated for stability, quality and production characteristics. The strain carries the inversion as described in the 2001 Annual Report and it can produce ca 10% more males for irradiation and release than could previous GSS. This strain will be transferred to several facilities in 2003. As a further improvement to the strain the visible marker, Sergeant, has been introduced into the strain following the successful field cage evaluations reported in the 2001 Annual Report. In 2003 this strain will be further analysed to assess the stability of the marker. There is considerable interest in the field of medfly SIT in developing procedures whereby eggs can be shipped between different rearing facilities. This could be especially relevant for GSS as a central facility could hold and maintain a specific strain and eggs could be sent to satellite facilities where only males would be reared for sterilization and release. During 2002 a series of egg shipments was received from the medfly mass rearing facility at El Pino, Guatemala and the effect of shipment on the quality parameters of the resultant flies was assessed. It was concluded that although there was some reduction in egg viability, especially for long shipments, it will be possible to develop an effective shipment protocol. In 2002 colonies of Bactrocera oleae and Anastrepha fraterculus were established, the former after some initial problems associated with the unsuitability of the larval diet. In 2003 these colonies will be used to develop improved mass rearing techniques for these species and for A. fraterculus a series of field cage evaluations will be carried out to assess the degree of mating compatibility of populations from the whole geographic range of this species in South and Central America. The development of tsetse mass rearing facilities in Africa is expanding and in

  6. Influence of male nutritional conditions on the performance and alimentary selection of wild females of Anastrepha obliqua (Macquart)(Diptera, Tephritidae)

    International Nuclear Information System (INIS)

    Cresoni-Pereira, Carla; Zucoloto, Fernando Sergio

    2006-01-01

    The behavior of A. obliqua females is regulated by endogenous and exogenous factors and among these the presence of males. Experiments were carried out to investigate whether the presence of males and their nutritional condition may affect the behavior of self-selection feeding and the performance of A. obliqua females. Females were sorted in groups containing yeast-deprived females and males, and non-yeast deprived females and males. The females were maintained apart from the males by a transparent plastic screen. Several yeast and sucrose combinations were offered to the females in a single diet block or in separate blocks. Ingestion, egg production, longevity and diet efficiency were determined. The non-yeast-deprived males positively influenced the females performance when the latter were fed with yeast and sucrose in distinct diet blocks. Performance was better in the groups without males and with yeast-deprived males where the females could not select the nutrient proportions (yeast and sucrose in a single diet block). (author)

  7. Current initiatives in the mass production and field release of the Mexican fruit fly, Anastrepha ludens, in the lower Rio Grande valley of Texas

    International Nuclear Information System (INIS)

    Worley, J.N.; Forrester, O.T.

    1999-01-01

    In order to reduce the program operating expenses in the South Texas Mexican Fruit Fly Sterile Release Program, four cost reduction initiatives are in progress at the U.S. Department of Agriculture's Mexican Fruit Fly Rearing Facility. These initiatives include implementation of a less expensive larval diet formulation, automation of the larval diet dispensing process, processing and reutilization of spent larval diet medium, and a more efficient system for emerging and feeding sterile flies prior to field release. (author)

  8. Influence of male nutritional conditions on the performance and alimentary selection of wild females of Anastrepha obliqua (Macquart)(Diptera, Tephritidae)

    Energy Technology Data Exchange (ETDEWEB)

    Cresoni-Pereira, Carla; Zucoloto, Fernando Sergio [Universidade Federal de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Fac. de Filosofia, Ciencias e Letras. Dept. de Biologia], e-mail: cresoni@usp.br, e-mail: zucoloto@ffclrp.usp.br

    2006-04-15

    The behavior of A. obliqua females is regulated by endogenous and exogenous factors and among these the presence of males. Experiments were carried out to investigate whether the presence of males and their nutritional condition may affect the behavior of self-selection feeding and the performance of A. obliqua females. Females were sorted in groups containing yeast-deprived females and males, and non-yeast deprived females and males. The females were maintained apart from the males by a transparent plastic screen. Several yeast and sucrose combinations were offered to the females in a single diet block or in separate blocks. Ingestion, egg production, longevity and diet efficiency were determined. The non-yeast-deprived males positively influenced the females performance when the latter were fed with yeast and sucrose in distinct diet blocks. Performance was better in the groups without males and with yeast-deprived males where the females could not select the nutrient proportions (yeast and sucrose in a single diet block). (author)

  9. Toxicological studies on the Use of acid applied or combined with gamma radiation for controlling the mediterranean fruit fly Ceratitis Capitata Wied

    International Nuclear Information System (INIS)

    Fadel, A.M.; Othman, K.S.A.

    1997-01-01

    Biological studies were conducted to determine the effect of boric acid applied alone to different stages of ceratitis capitata or combined with gamma radiation of the produced treated pupae (9 days old). At a concentration range of 200-2000 ppm of boric acid per gm larval diet, larval and pupal durations were insignificantly affected. Pupation significantly decreased with increasing concentration, and adult emergence significantly increased at higher concentrations. Lc50 value of boric acid applied to the larval diet was 250 ppm. Applying boric acid as a powder mixed with pupal medium, the Lc50 was 96 mg/gm sand. Male and emergence significantly decreased. Significant mortality was obtained in adults of C capitata after applying boric acid as a thin film on the inner surface of the experimental cages where the adults were kept or when mixed with their food or as powder on the cage bottom. Applying boric acid to larval diet and gamma radiation to the produced pupae (9 days old) insignificantly affected larval and durations, percent pupation, adult emergence or adult survival. In cross-mating experiments, egg hatch ability was significantly reduced in the combination treatments of boric acid (500, 1000 ppm) and gamma radiation (90 Gy). On the other hand gamma radiation combined with boric acid treatments significantly increased male mating competitiveness at the concentration of 1000 ppm of boric acid followed by gamma irradiation (90 Gy). 2 figs., 5 tabs

  10. comparative studies on pyriproxyfen and fenoxycarb as juvenile hormones applied separately or combined with gamma radiation for controlling the mediterranean fruit fly, ceratitis capitata (Wied)

    International Nuclear Information System (INIS)

    Fadel, A.M.; Othman, K.S.A.

    1998-01-01

    Comparative studies on pyriproxyfen and fenoxycarb as juvenile hormones applied separately or combined with gamma radiation were carried out for controlling ceratitis capitata. Lc 50's of the two juvenile hormones, pyriproxfen and fenoxycarb, were determined against ceratitis capitata in treated diet by continuous contact of eggs and larvae using various concentrations. The Lc 50 were 32 and 140 ppm for pyriproxyfen and fenoxycarb, respectively. The resulting pupae were gamma irradiated with 90 Gy. Larval and pupal durations were insignificantly affected, pupation and adult emergence were significantly affected while adult survival was insignificantly affected when applying the two JH's. Applying pyriproxyfen alone insignificantly increased egg hatch at the concentrations used (12.5 and 25 ppm) while when fenoxycarb was applied alone egg hatch was significantly decreased at the concentration used (100 ppm). Applying both juvenile hormones each combined with gamma radiation significantly reduced egg hatch. Male mating competitiveness was significantly increased when applying pyriproxyfen at the concentration 25 Ppm. Results indicated that pyriproxyfen was more effective than fenoxycarb against the mediterranean fruit fly ceratitis capitata.1 figs., 3 tabs

  11. Laboratory studies on insecticide resistance, alcohol tolerance and sex ratio distortion by meiotic drive in the Mediterranean fruit fly, Ceratitis capitata (Wied.)

    International Nuclear Information System (INIS)

    Wood, R.J.

    1990-01-01

    Three approaches to developing a genetic sexing technique for the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann), are discussed. Laboratory studies in late third instar larvae of the medfly revealed a potential for dieldrin resistance. A programme of sib selection produced the DiR strain, more than 60x resistante to dieldrin with cross-resistance to other cyclodienes, HCH, malathion and permethrin. Adults were not resistant. Crosses showed dieldrin resistance to be monofactorial, subject to a modifying effect from the genetic background on the expression of the homozygote. The 'backcrossing with selection' technique was used to separate dieldrin and malathion resistance but, in the process, resistance to both insecticides was lost after four to eight generations. Attempts to induce male linkage of the R gene by X irradiation were unsuccessful. Further genetic studies on resistance are recommended. With a view to producing an ethanol sensitive strain homozygous for an ADH null mutation (Adh - /Adh - ), pentenol selection of late third instar larvae was carried out, combined with ethyl methane sulphonate (EMS) treatments of adults. This produced a maximum of 15x tolerance of pentenol but no associated change in ethanol tolerance. Electrophoresis (PAGE) showed that two major ADH systems were at their most active in late third instar larvae. A gene causing a male distorted sex ratio in the progeny of males carrying it was isolated after X irradiation. The expression of the gene, which appears to be an example of meiotic drive, was enhanced by reducing the ambient temperature of parent flies from 26 deg. C+-2.0 to 18 deg. C+-1.5 during days 2-5 of pupal development. Selection to increase the expression of the gene produced families with less than 20% females but sex ratio tended to revert towards normal in subsequent generations. A potential is seen for producing strains in which sex ratio can be regulated by temperature. (author). 30 refs, 5 figs, 2 tabs

  12. Virtuelle Patienten: Wie werden sie aus Sicht von Medizinstudierenden am besten eingesetzt? [Virtual patients: Which kind of teaching method is most attractive to medical students?

    Directory of Open Access Journals (Sweden)

    Riemer, Martin

    2013-11-01

    Full Text Available [english] “Virtual Patients” (VPs enable medical students to simulate a patient encounter before their first real patient contact. Later they can also be used to assess and train students’ abilities to recognize and treat selected diseases. This is especially valuable as medical schools are normally linked to maximum medical care hospitals with increasing difficulties to present patients with less serious medical conditions to their students . Five different approaches were taken to find out which is the best way to use VPs in medical education. From the student’s points of view best results can be achieved in the majority of cases when students worked in groups of two up to about ten. [german] „Virtuelle Patienten“ (VP ermöglichen es Medizinstudierenden eine Begegnung mit Patienten zu simulieren, bevor sie ihren ersten realen Patientenkontakt haben. Später im Studium können VP genutzt werden, um ausgewählte Krankheiten zu erkennen oder deren Behandlung zu üben. Dies ist besonders wichtig, weil in Ausbildungskrankenhäusern der Maximalversorgung immer weniger Patienten mit normalen Erkrankungen als Beispiel für die Studierenden zu finden sind . Fünf verschiedene Ansätze wurden genutzt um herauszufinden, auf welche Art man VP am besten in der medizinischen Ausbildung einsetzen kann. Aus der Sicht der Studierenden können in der Mehrzahl der Fälle die besten Ergebnisse erzielt werden, wenn Studierende in Gruppen von zwei bis zu ungefähr zehn Personen unterrichtet werden.

  13. Energy perspectives 2035 - Volume 4, side-notes; Die Energieperspektiven 2035 - Band 4: Exkurse. Einzelthemen, wie fossile Energieressourcen, Einfluss der Klimaerwaermung, Flugverkehr, Ueberblick ueber andere Energieperspektiven des Energiesektors

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-06-15

    This comprehensive report published by the Swiss Federal Office of Energy (SFOE) presents a number of side-notes pertaining to the first three volumes of the Energy Perspectives series of reports. Various topics are discussed by the authors of the first three volumes of the perspectives in the meetings held by the Energy Perspectives Working Group. The sixteen side-notes presented here cover the following topics: General conditions, fossil resources, the influence of climate warming, CO{sub 2} emissions trading (Joint Implementation JI and Clean Development Mechanism CDM), definition of potentials, air traffic, imported renewable electricity, hydro power, electricity cost calculation, sensitivity analysis of centralised power production facilities, heat-pumps and their power consumption, cold spells and heat-waves, risk and its perception, the 2000-Watt society and international and national energy perspectives

  14. Diet of the Fuscous Flycatcher Cnemotriccus fuscatus (Wied, 1831 – Aves, Tyrannidae - in three habitats of the northern Pantanal, Mato Grosso, Brazil

    Directory of Open Access Journals (Sweden)

    MG Gaiotti

    Full Text Available The Fuscous Flycatcher (Cnemotriccus fuscatus is a medium-sized Tyrannidae widespread in South America. Despite its large distribution, there have been very few studies on its diet, especially in different habitats. This study presents data on diet variation in three habitats in the Pantanal wetlands in the state of Mato Grosso, Brazil. The specimens were captured through a mist-netting programme between February 2000 and May 2010, in the Retiro Novo Farm, in the Poconé municipality. Birds were captured in three vegetation types: Landizal, Cambarazal and Cordilheira. Tartar emetic was used to obtain the regurgitation samples identified at order level. We captured 61 individuals (21, 26 and 14 in the above described habitats, respectively. Diet of C. fuscatus differed between the three habitats. Ants and beetles were the most relevant prey items either in numerical frequency (NF or in frequency of occurrence (OF, in terms of the overall diet (NF = 27.34% and 37.89%; OF = 36.06% and 75.4%, respectively. However, in Cordilheira, seeds and beetles dominated the NF (21.8% and 38.1%, respectively and OF (28.5% and 85.7%, respectively. Cnemotriccus fuscatus was found to have an omnivorous diet, although in Cambarazal, individuals preyed exclusively on arthropods. The present study provides an important contribution to the knowledge of the diet of a poorly studied Neotropical bird.

  15. Wie het die geheim verklap?’ – Seksuele identiteit in Johann Nell se plaasroman Sondag op ’n voëlplaas (2013

    Directory of Open Access Journals (Sweden)

    Joanita Erasmus-Alt

    2018-03-01

    Full Text Available ‘Who let out the secret?’ – Sexual identity in Johann Nell’s farm novel Sondag op ’n voëlplaas [Sunday on a bird farm] (2013. The statement of the narrator in Johann Nell’s farm novel Sondag op ’n voëlplaas (2013 about his self-quest amongst ‘wild, fierce and erect ostrich necks’ (pp. 244–245, alludes to his doubts about his sexual identity. The apparent latent homosexual is strengthened by the epigraph, a direct translation of an excerpt from Calaf’s aria ‘Nessun Dorma’ from Puccini’s opera Turandot. In the traditional Afrikaans farm novel, the narrator is usually a third-person (auctorial narrator. The use of a first-person narrator in Nell’s novel emphasises his deviation from the (stereotypical traits and attributes of the traditional farm novel. The subjectivity inherent to the firstperson narration (the I-as-protagonist implies that what is represented in this novel is the main character’s version of reality and his response to, especially, the farm as bastion of masculinity and traditional socio-political beliefs. Based on the above, this article takes as its point of departure the hypothetical assumption that the epigraph has an important part to play in the interpretation of the secret in that the implied or abstract author, by means of a parodying perspective, highlights a specific vision regarding the thematic significance. The epigraph not only reinforces the idea of a lack of identity and the idea that the ‘true’ identity could perhaps be a homosexual disposition, but also that it is simultaneously an etiological journey to the original opera libretto. In its turn, the libretto can be traced back to the Greek myth of Oedipus and the sphinx. By both discussing the intertexts and analysing the narrator’s language usage, his disposition and his tale of the (traumatised self, his sexual identity is scrutinised.

  16. Wir überwachen uns. Wie die Sicherheit durch die Digitalisierung immer tiefer in den Alltag eingreift und warum uns das nicht interessiert

    Directory of Open Access Journals (Sweden)

    Martin Schinagl

    2014-10-01

    Full Text Available Der Bereich der Überwachung und Sicherheit unterliegt einer neoliberalen Neuausrichtung. Mit der Entstehung unheiliger Allianzen zwischen Staat und Wirtschaft, gezielter Privatisierung und einer neuen Warenförmigkeit von Sicherheit entgrenzen sich zunehmend auch deren Produktionsprozesse. Das Subjekt wird durch eine Digitalisierung der Alltagswelten zunehmend in die Sicherheitsarbeit mit eingebunden und übernimmt zentrale Aufgaben. Der Mensch, ohne dessen Zutun das digitale Überwachungssystem nicht so gut funktionieren würde, erscheint außerstande und unwillig, sich dieser Entwicklung zu entziehen.

  17. Wie "zukunftsreich" ist das neue Lehramtsstudium? Bestandsaufnahme zu Medienbildung und digitalen Kompetenzen in den Curriculaentwürfen der Sekundarstufe der PädagogInnenbildung_NEU

    Directory of Open Access Journals (Sweden)

    Klaus Himpsl-Gutermann

    2015-12-01

    Full Text Available Durch die PädagogInnenbildung_NEU eröffnet sich derzeit die Chance, österreichweit in vier Verbundregionen in Kooperation zwischen Universitäten und Pädagogischen Hochschulen die Lehramtsausbildung für alle Schulstufen und Schultypen zukunftsweisend zu reformieren. Zu den Ansprüchen an das neue Studium gehört auch, dass es künftige LehrerInnen an die Schulen entsendet, die neben ihrer fachlichen Expertise mit aktuellen gesellschaftlichen Herausforderungen und Entwicklungen adäquat umgehen können. Die rasant voranschreitende Technologisierung und Digitalisierung unserer Gesellschaft gehört zweifelsohne zu diesen Herausforderungen. Die E-Learning-Strategiegruppe der österreichischen Pädagogischen Hochschulen (PHELS hat deshalb die aktuell vorliegenden Curricula und Curriculaentwürfe der Sekundarstufe Allgemeinbildung in den vier Verbundregionen einer kritischen Analyse hinsichtlich Medienbildung und digitaler Kompetenzen unterzogen − mit einem ernüchternden bis verheerenden Ergebnis: Es scheint nicht nur die historische Chance vertan, Medienbildung systematisch in der LehrerInnenausbildung und damit in den Schulen zu verankern, sondern durch die fehlende informatische Grundbildung laufen künftige Generationen auch Gefahr, auf zunehmend digitalisierten Arbeitsmärkten den internationalen Anschluss zu verlieren.

  18. Guilds as in medieval times. Trade associations turn against standardized advanced training for solar electricians; Zuenfte wie im Mittelalter. Handwerksverbaende bremsen eine bundesweit einheitliche Fortbildung fuer Solartechniker

    Energy Technology Data Exchange (ETDEWEB)

    Bernreuter, J.

    2000-12-01

    Solar engineering is an interdisciplinary activity. Electricians, fitters and heating technicians, roofers, metal workers and even carpenters may cooperate in the construction and installation of a solar system. So far, the German trade associations were unable to agree on a standardized training procedure for solar engineering. But time is getting short as this is not an age of medieval guilds. [German] Solartechnik durchbricht die traditionell eng gesteckten Grenzen der Fachhandwerker: Elektrotechniker, Installateure und Heizungsbauer, Dachdecker, Glaser, Metallbauer und sogar Tischler koennen am Bau einer Solaranlage beteiligt sein. Bislang einigten sich die zentralen Fachverbaende des Handwerks in Deutschland jedoch nicht auf eine gemeinsame Basis in Sachen Fortbildung. Viel Zeit bleibt ihnen allerdings nicht: Die Tage der alten Zuenfte sind eindeutig gezaehlt. (orig.)

  19. The legends of nuclear power. How the energy lobby pulls us off the scent; Mythen der Atomkraft. Wie uns die Energielobby hinters Licht fuehrt

    Energy Technology Data Exchange (ETDEWEB)

    Rosenkranz, Gerd [Deutsche Umwelthilfe, Berlin (Germany). Bereich Politik und Presse

    2010-07-01

    The author discusses the following so-called energy lobbyists' legends on nuclear power: legend 1: nuclear power is safe; legend 2: the hazards due to misuse or terrorism are controllable; legend 3: radioactive waste is no problem; legend 4: nuclear power endorses climate protection; legend 5: there is enough nuclear fuel uranium; legend 6: we need lifetime extension; legend 7: nuclear power is actually in the state of renaissance. The final chapters of the book deal with the end of the myth nuclear power and the decision on the future of energy supply.

  20. Wie lässt sich die günstigste Schlepperstärke für die Vollmechanisierung des bäuerlichen Familienbetriebes bestimmen?

    OpenAIRE

    Hartel, Erhard

    2018-01-01

    Die Durchschnittsgrösse aller Betriebe zwischen 5 und 20 ha liegt in der Bundesrepublik bei 9, 7 ha. Da ein grosser Teil davon, besonders die Betriebe zwischen 5 - 8 ha, zu klein sind, um ein genügendes Einkommen für die Besitzerfamilie abzuwerfen, sollen diese Betriebe durch Aufstockung saniert werden. Die Betriebsgrösse, die unter mittleren Ertragsbedingungen als genügende Existenzgrundlage angesehen wird, liegt zwischen 10 und 15 ha. Damit kommen wir zu einer Durchschnittsgrösse für den Fa...

  1. „Nun sag, wie hast du‘s mit der Religion?“. Am Beispiel jugendlicher Religiosität.

    Directory of Open Access Journals (Sweden)

    Ilse Kögler

    2014-07-01

    Full Text Available ENGLISH: When Gretchen wants to know about her future beau‘s attitude to religion, Faust doesnʼt react in a traditional-denominational way. Instead his answers are religious-based. Similar ones could describe many varieties of contemporary adolescent religiosity. The article initially refers to transformations in the religious area, whose influences become noticeable in everyday denominational RE (religious education as well as in selected results of (Austrian empirical researches concerning the religiosity of young people. Following this, it outlines by what concepts of religion insights into the religiosity of adolescents are gained. Finally the relevance of „Gretchenʼs Question“ in denominational RE is shortly discussed. DEUTSCH: Wenn Gretchen ihren Faust mit der Frage nach seiner Einstellung zur Religion konfrontiert, antwortet er nicht religiös im traditionell- konfessionellen Sinn, doch immer noch in einer Art religiösen Haltung. Ähnlich könnten heute viele Formen jugendlicher Religiosität beschrieben werden. Der Artikel nennt zunächst Wandlungen im religiösen Feld, deren Einfluss sich tagtäglich im Religionsunterricht bemerkbar machen, sowie ausgewählte Ergebnisse (österreichischer empirischer Untersuchungen zur Religiosität Jugendlicher. Anschließend wird skizziert, mit welchen Bestimmungen von Religion Einsichten zur Religiosität Jugendlicher gewonnen werden, und zuletzt wird die Bedeutung der Gretchenfrage für den Religionsunterricht kurz aufgezeigt.

  2. Measurement of the potency of intermatings among five geographic populations of the house mosquito (Culex pipiens fatigans) wied of Indonesia using P-32 as tracer (Diptera culicidae)

    International Nuclear Information System (INIS)

    Soegiarto, C.

    1976-01-01

    An experiment to intercross geographic population of Cp fatigans from Medan (M), North Sumatra, Jakarta (J), Municipality of Jakarta, Java, Den Pasar (B), Bali, Menado (Mo), North Sulawesi, and Kupang (K), and South East Indonesia, has been done. The criterium for the determination of the degree of success in the matings is the relative amount of the male semen present in the female body transfered during copulation. The relative amount of the male semen in the females can be measured by counting the activity of the female body that already receives the transfered semen and the accompanying secretion of the accessory glands from the males, as the males are previously treated with the radioisotope P32 when they are still at the fourth instar larval stage. It proves that all population are able to be intercrossed, and that: 1. All population as source of females show no significant differences in their capability of mating, although there are light deviations from complete similarities among them. 2. All population as source of males are able to be intercrossed with some significant differences. Their respective values as males vary which, in descending order, can be arranged as M, J, B, K, and Mo. 3. Even the population in question are intercrossable, yet the result of their mutual intermatings cannot be assured as being proportionally viable. (author)

  3. Climate energy policy. How a great irritation makes the themes climate and energy inseperably; Klimergiepolitik. Wie eine grosse Verwirrung die Themen Klima und Energie unzertrennlich macht

    Energy Technology Data Exchange (ETDEWEB)

    Stalder, Meinhard

    2012-07-01

    The focus of the book under consideration is the equalization of the politically and economically closely interconnected issues carbon, climate and energy. Since the Neolithic Age, more carbon was released worldwide by clearing of forests than by consumption of fossil energy sources. In the good old time, nearly 15% of the bread cereals is fed to horses. The perfect energy source was found by means of the upcoming petroleum industry. Already the First World War was decided by petroleum. The Second World War anyway. Also thereafter, two oil crises and two Gulf Wars kept us in suspense. Petroleum is there sufficiently, but it becomes expensive increasingly. Instead of working on the reduction of energy costs such as in the year 1979, not our appetite but the exhaust gases are pilloried. Thereby the report of the International Panel on Climate Change contains a lot of technical faults. Its content is technically motivated and became an end in itself in the meantime. At the end, it is no longer about carbon dioxide but about 'coal'. This is because, behind all pseudo-science there is a sophisticated system which annually collects 100 billion dollar worldwide and distributes this fair beyond the impoverished nations of this world.

  4. CONSTRUCTION AND ADAPTATION OF GENETIC SEXING STRAIN OF THE MEDFLY CERATITIS CAPITATA (WIED.)BASED ON TEMPERATURE SENSITIVE MUTATION IN THE EGYPTIAN FRUITFLY LABORATORIES

    International Nuclear Information System (INIS)

    SHOMAN, A.A.

    2007-01-01

    Special strains that produce only males are used now for the control of the medfly Ceratitis capitata using the sterile insect technique. The use of these strains has a major impact on the overall efficiency of SIT, by increasing significantly the amount of sterility induced in field population comparing by using bisexual strains. Genetic sexing strains (GSS) are based on the use of male-linked chromosomal translocations which enable selectable marker genes to be linked to the male sex. Two basic components are required in the medfly to construct and adapt a laboratory strain which exhibits genetic sexing properties. The first is Y-auto some translocation strain, which enables male and female pupae to be differentiated on the basis of colour and the second is temperature sensitive lethal (tsl) mutation strain, which enables females to be killed by an increase in ambient temperature

  5. Wie bewerten die Fluggäste den Klimaeinsatz und die Klimakommunikation von Fluggesellschaften? - eine empirische Studie der Haltungen deutscher und dänischer Flugreisenden

    DEFF Research Database (Denmark)

    Larsen, Aase Voldgaard

    . Wittmer (2010) hat die Haltung der Fluggäste der SWISS quantitativ untersucht und festgestellt, dass der Klimaeinsatz die Fluggäste anspricht und die Kommunikation darüber positiv auf das Image einwirkt. Diese Studie trägt jedoch den bei Larsen & Pedersen (2010) aufgedeckten Unterschieden nicht Rechnung......, sind: - Inwieweit unterscheiden sich die Passagierhaltungen bezüglich der Klimakommunikation und der erwarteten Klima-Einsatzgebiete? - Inwieweit beeinflusst die Klimakommunikation der Fluggesellschaften ihr Image und ihre Identität? Die auf bisherigen Untersuchungen gegründete Hypothese ist, dass die...

  6. Welfare von Milchkühen in weidehaltenden Betrieben: Wie wirkt sich Weidehaltung auf das Sterblichkeitsrisiko von Kühen aus?

    DEFF Research Database (Denmark)

    Burow, Elke

    2011-01-01

    Die Strukturentwicklung in dänischen Milchviehherden führte in den letzten Jahrzehnten zu einem raschen Wachstum der Herden. Während im Jahr 1990 noch lediglich 36 Kühe je Betrieb gehalten wurden, waren es in 2000 bereits 66 im Mittel aller Betriebe (Dansk Kvæg 2009). Die derzeitige durchschnittl...... durchschnittliche Herdengröße beträgt 143 Kühe (Videncentret For Landbrug 2011). Dieser Trend ist vergleichbar mit den Entwicklungen in Deutschland und es ist zu erwarten, dass sich dieser Strukturwandel in beiden Ländern weiter fortsetzt....

  7. Verbitterte Frauen bewegen verletzte Männer. Wie aus Verben mit physischer Bedeutung Verben mit psychischer (Neben-)Bedeutung werden / Anni Silk

    Index Scriptorium Estoniae

    Silk, Anni

    2008-01-01

    Võrdlevalt analüüsitakse Lakoff/Johnsoni kognitivistliku metafooriteooria alusel selliseid eesti ja saksa verbe, mille esialgne tähendus seostub füüsilise maailmaga, kuid mida ülekantud tähenduses kasutatakse emotsiooniverbina

  8. How efficient work biomass cogeneration plants? A survey of plant operators; Wie effizient arbeiten Biomasseheiz(kraft)werke? Befragung von Anlagenbetreibern

    Energy Technology Data Exchange (ETDEWEB)

    Meiller, Martin; Jakuttis, Michael [Fraunhofer-Institut fuer Umwelt-, Sicherheits- und Energietechnik UMSICHT, Sulzbach-Rosenberg (Germany); Binder, Samir [Fraunhofer-Institut fuer Umwelt-, Sicherheits- und Energietechnik UMSICHT, Sulzbach-Rosenberg (Germany); Bayerischer Forschungsverbund Foreta, Sulzbach-Rosenberg (Germany)

    2013-03-01

    The use of biomass has increased very much in recent years. Due to the intensive use, the price of biomass fuels such as wood chips has increased substantially. This development bothers mainly biomass cogeneration plants. Many operators suffered considerable financial losses or even had to file for bankruptcy. The topic of efficiency is one of the central and critical success factors for the long-term viability of biomass-fired plants. (orig.)

  9. How can certificates of origin contribute to differentiation in the German green electricity market?; Wie koennen Herkunftsnachweise zur Differenzierung des Oekostrommarkts in Deutschland beitragen?

    Energy Technology Data Exchange (ETDEWEB)

    Seebach, Dominik [Oeko-Institut e.V., Freiburg im Breisgau (Germany). Bereich Energie und Klimaschutz; Mohrbach, Elke [Umweltbundesamt (UBA), Dessau-Rosslau (Germany). Herkunftsnachweisregister fuer Strom aus erneuerbaren Eenrgien

    2013-03-15

    The volume of electricity sold to consumers in the voluntary green electricity market is growing continuously. On 1 January 2013 the Certificates of Origin Registry of the German Federal Environmental Office went into service. This authority obliges electricity suppliers in Germany to use its services if they wish to prove to their final customers that they are supplying them with electricity from ''other renewable resources''. This gives rise to the question as to how certificates of origin can contribute to the further development and to meaningful differentiation in the green electricity market.

  10. "Er zog sich die 'neue Sprache' des 'Dritten Reiches' über wie ein Kleidungsstück": Communities of Practice and Performativity in National Socialist Discourse

    Directory of Open Access Journals (Sweden)

    Horan, Geraldine

    2007-01-01

    Full Text Available This article aims to provide new insights into the characteristics and use of National Socialist discourse. It discusses the methodological problems underlying the analysis of the topic and shows how previous research has resulted in a falsely polarised portrayal of the discourse and its creators and recipients. Applying the concepts of the 'community of practice' and 'performativity', taken from the study of language and gender, the article argues that discourse was not created by National Socialist ideologues and imposed upon the population, but instead was co-created and shaped by members of formal and informal groupings (communities of practice. Participation in these communities of practice enabled or coerced individuals to 'perform' their National Socialist identity to varying degrees and resulted in a discourse which was stylistically and communicatively adaptable and malleable.

  11. The use of massive SIT for the control of the Medfly, Ceratitis capitata (Wied.), strain SEIB 6-96, in Mendoza, Argentina

    International Nuclear Information System (INIS)

    Longo, Oscar de; Colombo, Anibal; Gomez-Riera, Pablo; Bartolucci, Andrea

    2000-01-01

    The increasing demand for fresh fruits has led to the development of new techniques in farming and in harvest and postharvest areas. Special care has been taken to ensure that the use of pesticides reconciles pest control with a low impact on the environment and human health. The presence of pests of economic importance, among them, the Medfly (Ceratitis capitata Weid.), led to the search for alternative techniques of control. The Medfly was first recorded in the United States in 1901, and in Argentina in 1934. The use of the sterile insect technique (SIT) began to develop around 1950. Improvement in the technique has produced promising results world-wide, especially in the breeding of sexing strains, which allows the release of sterile males only. The National Service of Agrifood Quality and Protection (SENASA) of Argentina, coordinates the National Program of Control and Eradication of Fruit Flies (PROCEM). PROCEM has divided Argentina into five different regions. This is according to quarantine regulations, and control and eradication activities to be undertaken. Actually, the Mendoza and San Juan provinces, and the Patagonia Region, have adhered to PROCEM. They have ongoing regional programmes in their respective areas. Mendoza and the Central Valleys of San Juan (Tulum, Ullum and Zonda) are included in the New Cuyo Region, Phase I, where the main objectives are: eradication of the Medfly; verification of the quarantine status; creation of a Medfly free area and exports to Medfly free markets. SIT is the main technique used in Mendoza for Medfly eradication. The Institute of Quality and Protection of Mendoza (ISCAMen) is in charge of the programme in the Province of Mendoza. Mendoza policies for Medfly eradication and the use of SIT, are based on: a growing area of 290,000 ha of vegetable and fruits (vineyards, stone, pome and nut orchards) of high quality, with favourable agroecological conditions and geographical isolation, exports of fresh fruits for the Northern Hemisphere markets during winter time, Mendoza as a crossroad area between the Pacific Ocean markets and Mercosur, the most important Latin American market (US$900 billion of GNP and 200 million people), the use of the Pacific Ocean ports near Mendoza as new avenues for exports, agroclimatic conditions are not favourable for the commercial production of citrus, cold winters with low temperatures often falling below freezing point, which result in a natural suppression of the pest, Ceratitis capitata is the only species of quarantine importance, the distribution of the irrigated land surrounded by desert with no natural plant hosts, which avoids re-infestation and facilitates quarantine controls. Taking into account all these considerations, the Mendoza Medfly Program was started in 1990, with pest monitoring for two years, in order to determine the degree of infestation and population cycles. A facility for the mass rearing and sterilisation of the Medfly was also constructed. In the 1992/93 season, flies of the sterile bisexual native strain were released. This activity continued through the 93/94 and 94/95 seasons, increasing weekly from 70 to 200 million flies. Results were satisfactory. Suppression achieved was in the order of 98%. The international and national financial crisis of December 1995 led to a considerable delay in mass rearing and liberation. A severe re-infestation took place then. Medfly native fertile adults returned to the levels of the 90/92 season. In the winter of 1995, tests were conducted in the rearing of the white pupae sexing strain, developed by the Seibersdorf Laboratory of the IAEA (SEIB 6-96). Taking into account tests performed by Robinson (1996) and Fisher (1997) showing good performance of the sexing strain, the field tests performed in Argentina and the adjustments already made in the mass rearing of the strain, ISCAMen decided to replace the native bisexual strain with the white pupae strain SEIB 6-96 at Bioplant Km8. The 96/97 season began early in mid-winter (August) with the release of a large number of sterile insects (116 million a week). As a result, the programme achieved the best degree of suppression ever recorded; this has been maintained in the 97/98 season. The level of re-infestation recorded in the 95/96 season, before the use of the white pupae strain, allowed a statistical comparison with the bisexual native strain. Pre-release Medfly trap day (MTD) indices were also used to compare with the 95/96 season, in the same geographical area

  12. How safely do we live. Risk assessment and risk management in our society. Wie sicher leben wir. Risikobeurteilung und -bewaeltigung in unserer Gesellschaft

    Energy Technology Data Exchange (ETDEWEB)

    Fritzsche, A F

    1986-01-01

    This volume deals in detail with the multidisciplinary subject of the perception and assessment of hazards both according to objective and subjective points of view, and relates to recent studies performed particularly in the USA. The author shows up possible methods and means to arrive at a handling of hazards in keeping with socio-political requirements, and intends to draw the general public's attention to this topic. The individual chapters are dedicated to the term of risk, the acceptable risk, the perception of hazards, the special case of nuclear energy, the psychological backgrounds, the qualification of hazards, hazard assessment and risk management. Abstracts of these chapters were entered separately into the data base. The author thinks the dialogue with the citizen to be the only way to arrive at a better understanding of ''risk'' in the general public. (HSCH).

  13. Ein überfälliger Dialog. Wie Frauen- und Geschlechterforschung und Soziologie miteinander ins Gespräch kommen können

    Directory of Open Access Journals (Sweden)

    Heike Kahlert

    2007-03-01

    Full Text Available Die Monographie von Brigitte Aulenbacher zum Zusammenhang von Rationalisierung, Geschlecht und Gesellschaft ist in gegenstandsbezogener und methodologischer Hinsicht ambitioniert, überzeugend und lesenswert. Die Studie stellt eine solide, manchmal auch etwas zu weitschweifige und detailreiche Grundlage für weiterführende Diskussionen zwischen der (sozialwissenschaftlichen Frauen- und Geschlechterforschung und der Soziologie, genauer der Gesellschaftstheorie in zeitdiagnostischer Perspektive, Arbeits-, Industrie-, Organisations- und Techniksoziologie, dar.

  14. Control valves and how to prevent them being the cause of process instability; Wie man verhindert, dass Regelventile die Ursache von Prozess-Instabilitaet werden

    Energy Technology Data Exchange (ETDEWEB)

    Grund, Tobias [Emerson Process Management GmbH und Co. OHG, Haan (Germany)

    2009-12-15

    Plant engineers and engineering managers often preside over departments that have responsibility for improving plant efficiency or availability, cutting raw material and utilities usage, or any one of a number of other Key Performance Indicators (KPIs) that are associated with the process automation equipment. In order to bring about these changes, investments are often made in the ''glamorous'' end of the business - the latest all digital control system, the newest and best advanced process control software, even higher accuracy measurement devices. This is all well and good providing the one component in the loop that moves, the control valve, is up to the job. Often overlooked, the valve has the ability to make or break any process automation investment. In this article a proven three step process is described that ensures the control valve will help reaching the achieved goals. (orig.)

  15. The discovery of the electron. Fundamental reseach or how jobs are created; Die Entdeckung des Elektrons. Grundlagenforschung oder wie man Arbeitsplaetze schafft

    Energy Technology Data Exchange (ETDEWEB)

    Bock, Rudolf

    2009-07-01

    The present volume is an easily understandable excerpt from the extensive work provided for the specialist ''Electrical discharges in gases at low pressure''. Additionally the curriculae vitae of the contributing researchers are reproduced and in one of the main chapters the practical effects of the purely scientific research shown.

  16. How to reduce CO{sub 2} emissions... while keeping the lights on; Wie man CO{sub 2} in Schach haelt... und trotzdem die Lichter anbleiben

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2012-10-15

    959 solar modules were installed on the main building of Alcatraz, the former prison island. Together with a bank of accumulator batteries, the photovoltaic system will reduce the working period of the diesel generators by 60 percent.

  17. The bond. How in our quantum world all is connected with all; The Bond. Wie in unserer Quantenwelt alles mit allem zusammenhaengt

    Energy Technology Data Exchange (ETDEWEB)

    McTaggart, Lynne

    2011-07-01

    What in the first half of the twentieth century began with quantum physics, continues since some time in many other directions of science: New researches yield more and more proof that no thing exists isolatedly for itself, but all is connected together by an invisible energetic band. Not to the separating we should us concentrate, but to the connecting: The bond. When we regard these knowledges, it changes other way to live fundamentally. Concurrence and struggle for existence are replaced by mutual assistance and responsibility together. The known scientist Lynne McTaggart makes a new understanding of being and consciousness possible and opens us the eyes for the mutual connectness of all life.

  18. How ERP (Enterprise-Resource-Planning) - systems reduce energy consumption during manufacturing; Wie ERP-Systeme in der Fertigung den Energieverbrauch reduzieren

    Energy Technology Data Exchange (ETDEWEB)

    Walz, Reinhold [Gewatec Systemloesungen GmbH, Wehingen (Germany); Ruesing, Eduard

    2011-05-30

    A precision manufacturer is presented, who utilize energy management for data of machine tools and operational data acquisition. The pilot center shuts down automatically the ventilation system for exhaust air of CNC-machines during nighttime and weekend. (orig./GL)

  19. Quantum field theory. How it is described, what holds the world together in the innermost; Quantenfeldtheorie. Wie man beschreibt, was die Welt im Innersten zusammenhaelt

    Energy Technology Data Exchange (ETDEWEB)

    Fritzsch, Harald [Muenchen Univ. (Germany). Physik Dept.

    2015-07-01

    Do we already know the ''theory for all'' or are we still far away from it? Does at highest energies really a ''Grand Unification'' of all fundamental forces exist? And which role do play the string theory and the Higgs boson? Harald Fritzsch takes the reader along with a mathematical journey through the world of quantum field theory and presents so a large survey about the most actual status of modern theoretical physics.

  20. Lider fallen zu wie die Tore der Burg : [luuletused kogust "Simunapäev"] / Kristiina Ehin ; aus dem Estnischen von Gisbert Jänicke

    Index Scriptorium Estoniae

    Ehin, Kristiina, 1977-

    2004-01-01

    Sisu: die nachricht von der sanktgeorgsnacht = Jüriöö sõnum ; sie standen unter einem schiefen dach = nad seisid viltuse katuse all ; "der soldat steht auf dem hof ..." = "püssimees seisab õues..." ; "der mond heult..." = "kuu ulub..." ; der frauenräuber = naisteröövija ; "ich schlafe als schlamm im wald..." = "magan mudana metsas..." ; "ruhig erhebt sich der weihrauchdunst..." = "vaikselt tõuseb taevasse..."

  1. The discovery of the Higgs particle. Or how the universe got its mass. 3. ed.; Die Entdeckung des Higgs-Teilchens. Oder wie das Universum seine Masse bekam

    Energy Technology Data Exchange (ETDEWEB)

    Lesch, Harald (ed.) [Muenchen Univ. (Germany). Inst. fuer Astronomie und Astrophysik

    2013-07-01

    Higgs - that is a physicist, a field, a particle. 1964 only the idea of Peter Higgs and some other physicists existed: A theory for specialists of particle physics. Since the 1980th years then in the underground at Geneva the largest machine of mankind was built - consisting of a nearly 27 kilometers long ring tunnel and gigantic detectors. In this enormous facility, called LHC (Large Hadron Collider), particles were accelerated nearly to light velocity. In its collisions they should produce the predicted Higgs particle. Finally in 2012 the detection succeeded - the Higgs particle exists really. And also a Higgs field exists. It penetrates the whole cosmos and mediates to the particles the property of the rest mass. Nearly men have never came to the big bang. And Peter Higgs received 2013 with Francois Englert the Nobel prize of physics. Harald Lesch and his coworkers report from the expensive search for the Higgs particle, the theoretical conditions and consequences for the particle physics. They clarify what it's called ''God particle'' or fears about a black hole arising in the LHC experiment. An exciting narrative about the foundations of our universe and the fascination at the fringe of the recognizable reality.

  2. In the way. How nuclear power plants are plugging and thwart wind energy; Im Weg. Wie AKW das Netz verstopfen und die Windkraft ausbremsen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2018-01-15

    The contribution discusses the complex situation due to the fact that the remaining nuclear power plants in Germany operate with full power and force wind and solar energy plants to reduce their power production resulting in electricity shortages. The situation is bound to political decisions and their interpretation by nuclear operators concerning the nuclear phaseout agreement.

  3. Efeitos do citrato de fentanila em Trachemys dorbigni (Duméril e Bibron, 1835) e Trachemys scripta elegans (Wied, 1839)

    OpenAIRE

    Kaminishi, árthur Paulino Sanzo

    2013-01-01

    Foram utilizados 30 animais, 15 Trachemys dorbigni e 15 Trachemys scripta elegans, com massa corporal variando de 0,750 a 1,800 kg, provenientes do acervo do Laboratório de Ensino e Pesquisa em Animais Silvestres - UFU (LAPAS). Cada espécie foi separada em dois grupos, sendo um experimental, com 10 animais, e outro controle, com cinco animais. Foi administrado citrato de fentanila 0,05 mg/kg aos grupos experimentais, e solução fisiológica 1 ml/kg aos grupos controle, todos por via subcutânea ...

  4. Wie Effektiv ist Microteaching? Ein Uberblick uber funfundreifsig Jahre Forschung (How Effective Is Micro-Teaching? A Survey of Fifty-Three Years of Research).

    Science.gov (United States)

    Klinzing, Hans Gerhard

    2002-01-01

    Reviews 200+ studies on microteaching. Argues that the use of microteaching in pre- and inservice education leads to positive and long-term effects in the acquisition of verbal and non-verbal behaviorial patterns, integration of learning into individual behavioral repertoire, and in the transfer into professional teaching practice. (CAJ)

  5. Smart Energy 2012. How smart is the way towards the turnaround in the energy policy; Smart Energy 2012. Wie smart ist der Weg zur Energiewende?

    Energy Technology Data Exchange (ETDEWEB)

    Grossmann, Uwe; Kunold, Ingo (eds.)

    2012-07-01

    The contribution under consideration contains fifteen contributions of well-known authors from commercial enterprises, public institutions and universities on smart energy: (1) Smart grids, but surely (Claudia Eckert); (2) Requirements concerning the further development of data protection and data security as part of the technological change (Reinhold Harnisch); (3) Standardization in the smart grid (Harald Orlamuender); (4) IEC 61850 - The standard for energy automation (Georg Harnischmacher); (5) Smart City, the intelligent grid in the city (Michael Laskowski); (6) IKT is a basis for a real smart power distribution system (Justus Bross); (7) Power transparency and optimized building optimization by means of a holistic automation concepts (Joerg Wollert); (8) Distributed architecture for a balancing aggregation of consumption and generation of power in private households (Kilian Hemmeboehle); (9) Development of an e-energy market place and first experiences from the field test in the E-DeMa project (Bernd Werner); (10) Smart metering rollout pilot ''30,000er'' (Axel Lauterkorn); (11) Experiences with the connexion and communication to smart meters in the project eTelligence (Guenter Pistoor); (12) Smart Phoenix - Intelligent energy networks in Dortmund (Roland Brueggemann); (13) Smart planning (C. Engels); Intelligent house control by means of smart metering (Sabine Wieland); (14) Dynamic billing of energy and value-added service in the networked home (Frank C. Bormann).

  6. Wie schneiden Sie ab?: Studie über Kontroll- und Prüfungsaktivitäten bei mittelgrossen Unternehmen, Spitälern und Hochschulen in der Schweiz

    OpenAIRE

    Ruud, T F; Isufi, S; Friebe, P; Stebler, W; Seheri, F; Emmenegger, M

    2008-01-01

    Kontroll- und Prüfungsaktivitäten unterstützen den Verwaltungsrat und die Geschäftsleitung bei der Steuerung und Kontrolle des Unternehmens. Bei mittelgrossen Unternehmen ist aufgrund der begrenzten personellen und finanziellen Ressourcen ein effektiver und effizienter Einsatz dieser Aktivitäten unerlässlich. Auch bei Spitälern und Hochschulen gewinnen Kontroll- und Prüfungsaktivitäten infolge erhöhter Wettbewerbsintensität und steigenden Kostendrucks sowie zunehmender Unabhängigkeit diese...

  7. Solar power stations for all roofs - two enterprises combine solar power generations and franchising; Fuer jedes Dach ein Solarkraftwerk - wie zwei Unternehmer Sonnenenergie und Franchising verbinden

    Energy Technology Data Exchange (ETDEWEB)

    Meyeren, T. von

    1997-12-31

    A project is presented in which two partners cooperate in roof-mounted solar power units. Prospects are good: Although the German market for photovolatic systems is still not in full swing, there are good chances worldwide. (orig.) [Deutsch] `Die Zeit is reif, etwas zu tun` fanden Lothar Kuhn, Elektromeister aus Starzach in Wuerttemberg, und Alfred Ritter, Inhaber des Schokoladen-Unternehmens Ritter Sport, angesichts der Zurueckhaltung der grossen deutschen Energieunternehmen gegenueber der Solar-Energie. Sie beschlossen, sich der Energieinteressen der Menschen konstruktiv anzunehmen, der eine - Alfred Ritter - als Kapitalgeber, der andere - Lothar Kuhn - als geschaeftsfuehrender Gesellschafter der im Juni 1996 gegruendeten Sunlive Solarnetwork GmbH and Co KG, auf Schloss Weitenburg in Starzach und zugleich Experte auf dem Gebiet der Solarstrom-Erzeugung. Die Vision:Jedes Dach soll ein solares E-Werk werden. Die Chancen: Nie besser als heute. Der deutsche Photovoltaik-Markt ist unterentwickelt, Prognosen bescheinigen jedoch weltweit gross Entwicklungschancen in wirtschaftlicher und technischer Hinsicht.(orig./AKF)

  8. How private housholds can use environment - higher energy consumption despite efficiency increasement; Wie private Haushalte die Umwelt nutzen - hoeherer Energieverbrauch trotz Effizienzsteigerung. Hintergrundpapier

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-11-15

    Energy saving potentials are not being used satisfactorily to date, especially as regards the use of electricity. No-load losses caused by electrical devices such as television sets and computers amount to some 17 billion kilowatt hours per year for private households alone. This makes 3.3. billion euros in electricity costs. Having an easily accessible mains switch that disconnects electrical devices from the mains can already help to avoid no-load losses. White goods such as fridge-freezers, washing machines or dish washers also offer considerable saving potentials. Efficient technologies could contribute annual savings from this product sector in the order of seven billion kilowatt hours, equivalent to 5.8% of the total electricity consumption of private households.

  9. How can the German electricity export surplus in 2013 be explained?; Wie laesst sich der deutsche Exportueberschuss fuer Strom in 2013 erklaeren?

    Energy Technology Data Exchange (ETDEWEB)

    Growitsch, Christian; Nagl, Stephan; Peter, Jakob; Tode, Christian [Koeln Univ. (Germany). Energiewirtschaftliches Inst.

    2014-11-15

    In principle cross-border electricity transmission can be accounted for by price differences between the relevant electricity exchanges. For any given level of electricity demand the price of electricity at the individual electricity exchanges is primarily influenced by fuel prices, power plant availability and the feed-in of electricity from renewable energy, and differences in electricity prices in turn are a determinant of cross-border transmission. Some may have been surprised by the high level of electricity export in the spring of 2011, only shortly after 8 GW of power plant capacity had been shut down as part of the nuclear energy phaseout. What in fact explains the existing export surplus are the continuing excess of power plant capacity, an efficient power plant fleet compared with other European countries and the continuing growth of renewable energies in Germany.

  10. Structural change and climate protection. How does climate policy change economics and working environment; Strukturwandel und Klimaschutz. Wie Klimapolitik Wirtschaft und Arbeitswelt veraendert

    Energy Technology Data Exchange (ETDEWEB)

    Blazejczak, Juergen [DIW Berlin (Germany). Abteilung Energie, Verkehr, Umwelt; Edler, Dietmar [Deutsches Institut fuer Wirtschaftsforschung, Berlin (Germany). Abteilung Innovation, Industrie und Dienstleistungen

    2011-07-01

    In order to curb the climatic change, the greenhouse gases in industrialized countries have to be reduced dramatically by the middle of this century. This strengthens the economic structural change. The contribution under consideration discusses the knowledge of the climate policy-induced structural transformation of economy and labor market in Germany. The actual state of information is limited. It is possible to identify sectors that either are burdened particularly by costs of avoidance or benefit from additional demand. Due to a variety of complex interdependencies employment effects only are tapped with great uncertainty. The additionally induced inter-sectoral structural change in employment lags behind the intra-sectoral adjustment demands. The requirements in qualification will increase more. Completely new skills are required. Necessarily additional qualifications often can be acquired by training. The correlations of forced climatic change policy with other aspects of job quality have not been studied systematically.

  11. Der Runen-Stein von Rök und Snorri Sturluson - oder 'Wie aussagekräftig sind unsere Quellen zur Religionsgeschichte der Wikingerzeit?'

    Directory of Open Access Journals (Sweden)

    Preben Meulengracht Sørensen

    1990-01-01

    Full Text Available The article contributes to the discussion on source criticism within the research field of Old Norse religion. It examines the common assumption that archaeological sources are always to prefer above written sources from the Middle Ages where the Viking Era is described as such accounts are invariably tendentious and biased. Influenced by theories from the field of social anthropology, however, the article argues for the worth of written sources as a complement to the material ones. As an example, the effort to interpret the inscriptions on the runic stone from Rök are introduced. The article suggests that different kinds of source material offer a spectrum of possibilities out of which none alone, but rather all taken together, can deepen the researcher’s knowledge about the object under study.

  12. Disinfestation of export oranges and tangerines (Citrus spp) against medfly Ceratitis capitata (Wied., 1824) (Diptera; Tephritidae) by gamma irradiation (Co-60)

    International Nuclear Information System (INIS)

    Costa, N.

    1990-01-01

    A gamma bean 650 cobalt-60 source was utilized for irradiation (0; 10; 50; 100; 200; 300; 400; 500; 750 and 1000 Gy) of fresh ripe fruits artificially interested by immature stages of Ceratitis capitata to determine the sterilizing and lethal doses. The sensorial and chemical analyses did not show any significant differences between the control and irradiated samples. Differences on loss of weight of oranges show that 500 and 1000 Gy doses were responsible for increasing the loss of water content. (author)

  13. How energy efficient are hotels really? An investigation on the energy consumption in the hotel business; Wie energieintensiv sind Hotels wirklich? Studie ueber den Energieverbrauch in der Hotellerie

    Energy Technology Data Exchange (ETDEWEB)

    Bernard, Soara [Wuppertal Univ. (Germany); Voss, Karsten [Wuppertal Univ. (Germany). Fachbereich Architektur

    2012-11-01

    Energy savings and increased energy efficiency gain in importance in the hotel sector. But at which energy consumption is a hotel energy efficient? What are the typical energy consumption figures? Compared to other utilizations of buildings the available data for hotels is low. Against this background, the Department of Building Physics and Building Services of the University of Wuppertal (Wuppertal, Federal Republic of Germany) investigates energy consumption in hotels. These studies are funded by the Federal Ministry of Economy and Technology within the research initiative EnOB (Research for energy-optimized construction).

  14. Teaching how to read and write science: a library-journal partnership / Lehren, wie man Wissenschaft liest und schreibt: eine Partnerschaft von Bibliothek und Zeitschrift

    Directory of Open Access Journals (Sweden)

    Petrak, Jelka

    2006-05-01

    Full Text Available SettingThe Croatian Medical Journal (CMJ is a general medical journal published in English. It is the only Croatian medical journal covered by the most selective bibliographic databases, eg. SCI-Expanded and Current Contents. The Central Medical Library (CML is the most important Croatian medical library serving as central point for biomedical information. Both are affiliated to Croatia's largest and oldest medical school, the University of Zagreb's School of Medicine. The CMJ started publishing in English in 1992. Its editorial board asked CML to assist in formulating change policy and bringing best editorial practice to the local setting. When CMJ introduced an "author-helpful" policy, CML supported authors to find literature and formatting references. CMJ also co-opted the head-librarian to the editorial board. Teaching how to read and write science: a library-journal partnershipEarly in their work, the CMJ editorial board learned that Croatian physicians had important and interesting data but inadequate skills to present them in a scientific article. To alleviate the lack of knowledge in research methods and writing, a mandatory course in scientific methodology and communication was developed and introduced into the university curriculum. The course runs since the academic year 1995/96 focusing on (1 principles of scientific research; (2 finding medical information; (3 study design and presentation of data; (4 writing a scientific article. The course comprises three components: lectures, discussions in medium-sized groups and exercises in problem solving in small groups. Three librarians participate in the course, giving a core lecture and hands-on exercises in problem-solving using PubMed. In 2002 and 2004 CMJ and CML started two continuing courses. Planning and Writing about Research in Medicine and Finding and Appraisal Medical Information respectively. The courses are aimed at young academic physicians and general medicine practitioners. The courses have been highly rated by the Croatian Medical Chamber, which serves as licensing institution. Where to go next?CMJ and CML developed three elective courses in evidence-based medicine (The importance of finding good evidence, Planning research and Research data analysis and writing research reports which are to be introduced in the next academic year. Another collaborative effort - CMJ answers your clinical question - consists in developing a web service on the CMJ's web site to help Croatian physicians to transfer evidence-based medicine principles to their clinical practice. A librarian will be responsible for searching and critical appraisal of evidence-based information.

  15. Begeleid rijden: wie doet mee met 2toDrive en waarom? : een vragenlijstonderzoek onder 16- en 17-jarigen in Nederland.

    NARCIS (Netherlands)

    Schagen, I.N.L.G. van Wijlhuizen, G.J. & Craen, S. de

    2013-01-01

    Accompanied driving: who participate in 2toDrive and why? : a questionnaire study among 16 and 17-year-olds in the Netherlands. On 1 November 2011, 2toDrive, a six-year pilot of accompanied driving, commenced in the Netherlands. In 2toDrive youths can start their driver training and take the theory

  16. O wrażliwośco kontekstowej zdań typu 'S wie, że p' (ON CONTEXTUAL SENSITIVITY OF SENTENCE TYPE 'S KNOWS THAT P'

    Directory of Open Access Journals (Sweden)

    Rafał Palczewski

    2005-12-01

    Full Text Available Semantic contextualism is recently one of the most discussed epistemological theories. So far, the main part of discussion concerns contextualist solution of the skeptical problem. Nowadays it has become more clear that this theory needs strong and independent justification from a linguistic and language-philosophical point of view. In this paper The author outlines several treads concerning linguistic basis for contextualism. In part one there are presented some fundamental contextualism thesis and an example proposed by S. Cohen which has to support it. Next the following question is considered: which semantic feature is responsible for context dependence of knowledge ascription sentences? Is it indexicality, vagueness, ambiguity, ellipticity or unspecificity? Debate sketched in part three is concentrated on an analogy between linguistic behavior of knowledge ascription sentences and other context-dependent expressions, especially indexicals and gradable adjectives. The last part of this paper contains a new argument for contextualism proposed by K. De Rose. In addition such argument points out that contextualism does not confuse a truth conditions of knowledge ascribing sentences with their condition of warranted assertability.

  17. Arbeit und Liebe: Wie die soziale Organisation der Geschlechterverhältnisse in beiden Bereichen zu Machtunterschieden zwischen Frauen und Männern führt

    OpenAIRE

    Kupfer, Antonia

    2017-01-01

    "Gegenstand dieses Beitrags ist die soziale Organisation der Geschlechterverhältnisse als Hierarchie zwischen Männern und Frauen vorwiegend in westlichen Ländern. Auf der Grundlage eines dualisierenden Denkmodells werden Frauen von Männern instrumentalisiert, ausgegrenzt und diskriminiert. Im Bereich der Arbeit manifestiert sich das in einer geschlechtsspezifischen Arbeitsteilung, der Vergeschlechtlichung von Tätigkeiten und Berufen, einer gläsernen Decke für Frauen in höheren Erwerbsposition...

  18. Suppressive effects of Calendula micrantha essential oil and gibberelic acid (PGR) on repro ductive potential of the Mediterranean fruit fly Ceratitis capitata Wied. (Diptera: Tephritidae).

    Science.gov (United States)

    Hussein, Karam T

    2005-08-01

    The volatile oil of Calendula micrtantha plant was extracted and the components were identified by Gc/Ms. Adulticidal efficiency of the volatile oil and gibberelic acid "plant growth promoting hormone" as well as their mixture was assessed against the Mediterranean fruit fly Ceratitis capitata. The result showed that the two compounds capable have characteristic resembling to insect juvenile hormones and have suppressive effect on reproductive potential. They induced the significant disturbances in the ovarian protein fraction and the amino acids patterns.

  19. Radiological and nuclear emergency preparedness and response. How well are we prepared?; Radiologischer und nuklearer Notfallschutz. Wie gut sind wir vorbereitet?

    Energy Technology Data Exchange (ETDEWEB)

    Geick, Gunther H.G. [Dataport, Altenholz (Germany); Herrmann, Andre R. [HERRMANN Consultant, Basel (Switzerland); Koch, Doris [Ministerium fuer Justiz, Gleichstellung und Integration, Kiel (Germany); Meisenberg, Oliver [Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt GmbH, Neuherberg (Germany); Rauber, Dominique [Bundesamt fuer Bevoelkerungsschutz (BABS), Zuerich (CH). Eidgenoessisches Dept. fuer Verteidigung, Bevoelkerungsschutz und Sport (VBS); Stuerm, Rolf P. [SafPro AG, Basel (Switzerland); Weiss, Wolfgang [Bundesamt fuer Strahlenschutz, Salzgitter (Germany); Miska, Horst; Schoenhacker, Stefan

    2011-07-01

    The contributions to this topic are dealing, in a broad overview, with important aspects of Nuclear Emergency Preparedness and Response, like the influence of the new ICRP recommendations number 103 and number 109 on emergency preparedness and on planning for response, possible problems in installing and operating emergency care centres, experience from exercises as well as the training of response personnel in Austria and Germany. Finally, measures in emergency preparedness with regard to a dirty bomb attack are reported by means of an INEX-4-exercise in Switzerland. (orig.)

  20. [Professor Wiesław Magdzik (MD), the representative of the Polish School of Epidemiology in 80th anniversary of birthday].

    Science.gov (United States)

    Naruszewicz-Lesiuk, Danuta

    2012-01-01

    Wieslaw Magdzik in 1955 completed his medical studies in the Sanitary--Hygienic Department of Faculty of Medicine, Medical University of Warsaw. At the recommendation of Dr. Jan Kostrzewski, was hired in the Department of Epidemiology (2.11.1955). When working in the Department he completed the second degree of specialization in epidemiology and the first drgree of infectious diseases and also obtained doctoral degree in medical science. Head of his specialization and supervisor of dissertation was prof. Dr. Jan Kostrzewski. In 1970 the Scientific Council of the PZH awarded him a Ph.D. degree. In 1982 he received the title of associate professor and in 1988 the full professorship of medical science. At PZH he worked until 2002, to his retirement, occupying the positions: Head of the Department of Epidemiology (1979-2002), Director of PZH (1981-1990). Periodically, during the years 1972-1978, he worked in the Ministry of Health and Human Services as director of the Department of Sanitary Inspection. He participated the fight against smallpox in India, he served as a temporary adviser for the control of communicable diseases in the WHO regional office in Copenhagen, then in New Delhi. He published over 240 scientific papers. He has supervised eight doctoral theses, has been honored with many decorations and medals, among which are: the Commander's Cross of the Polonia Restituta (1998), the Order of the Bifurcated Needle (WHO, 1976), the badge ,,For Merits to the Kielce region" (1985).

  1. Labelling of the mediterranean fruit fly Ceratitis capitata (Wied., 1824) (Diptera: Tephritidae), with stable manganese and neutron activation, for behaviour studies

    International Nuclear Information System (INIS)

    Tornisielo, V.L.

    1990-01-01

    In view to label adults of the Mediterranean fruit fly for behaviour studies (etiology) experiments were carried out using larvae feeded with enriched stable manganese on concentrations of 0; 0.0001; 0.0005; 0.0010; 0.0050 and 0.0100 grams of MnCl2 per gram of diet. Also a comparison was done between larvae reared on natural fruits (Coffea arabica, Eriobotaya japonica, Syzugium jambos, Eugenia uvalha, Prunus persica and Psidium guajava) and on artificial diet. The low concentration of manganese (0.0001 grams of MnCl2 per gram of larval diet) acted only as a micronutrient. Concentrations of 0.0005 and 0.0010 grams of MnCl2 per gram of diet didn't affect larvae or adults, increasing the longevity of the females. Concentrations of 0.0050 and 0.0100 grams of MnCl2 per gram of larval diet completely inhibited the development of the insects. The flies activated by a flux of 2.67.10 sup(11) n/cm sup(2)/s during 60 second and counted by a germanium detector during 120 seconds showed that males and females remained well labeled until the 13 sup(th) day of adult life, if their larvae were feed on diet containing 0.0005 and 0.0010g of MnCl2 per gram of diet. However, after 25 days only the males emerged from larvae reared on diet containing 0.0005 g of MnCl2 per gram of diet remained labeled. The females excreted the most of manganese, probably through their laying eggs. The quantity of accumulated manganese detected on the adults after neutron activation and reared on different fruits was very similar, for any kind of fruit. (author)

  2. Pilot experiment to control Medfly, Ceratitis capitata (Wied.) (Diptera: Tephritidae) using mass trapping technique in a custard apple (Annona cherimolia Mill.) orchard

    International Nuclear Information System (INIS)

    Ros, J.P.; Escobar, I.; Garcia Tapia, F.J.; Aranda, G.

    2000-01-01

    Recently, as a result of assays coordinated by the International Atomic Energy Agency (and participated by Spain), it was decided that ammonium acetate, putrescine and trimethylamine be included in low release polyetilene bag dispensers (Biolure, Consep, Co) as the Mediterranean fruit fly (Medfly) females were greatly attracted by them. These synthetic substances are placed in traps at the frequency of one and a half months to two months. If Tephry traps are used, one DDVP wafer (containing Vapona or a similar substance) is enough to kill the flies that enter them. These attractants make it unnecessary to replenish the liquids in the Mcphail traps and remain effective throughout the entire fruit season. The Caja Rural de Granada (a bank of farmers) encourages all techniques that increase crop profits for farmers. It is even more desirable if such crop profitability can be achieved without the application of insecticides which may result in the likely presence of toxic residues. In the light of the results achieved by the attractants with regard to female Medflies, the Caja Rural de Granada, together with the National Institute of Agricultural Research Counselling (Agricultural Department), performed an experiment on mass trapping to confirm whether it is possible to protect a fruit plantation with the application of this biotechnical method. Due to the great risk of this initial experiment, the farmers were free to use insecticides as often as they deemed necessary so that no damages due to any plague could be blamed on the experiment

  3. How do young people evaluate nuclear energy at nuclear power plant sites? An empirical study; Wie bewerten junge Menschen an Standorten von Kernkraftwerken die Kernenergie? Eine empirische Studie

    Energy Technology Data Exchange (ETDEWEB)

    Kretz, Simon [Karlsruher Institut fuer Technologie (KIT), Karlsruhe (Germany). Inst. fuer Geographie und Geooekologie; Kramer, Caroline [Karlsruher Institut fuer Technologie (KIT), Karlsruhe (Germany). Professur fuer Humangeographie

    2014-12-15

    How does the younger generation evaluate nuclear power at sites with nuclear power plants? This has been examined at four sites with different decommissioning stages, as the presence of a nuclear power plant in young people's daily life represents a potential employer as well as a potential risk factor. The attitude of this generation will expectedly and sustainably influence the development of communities. The decommissioning of a nuclear power plant is currently, optimistically estimated by different energy supplying companies with a time period of 15 to 20 year. Thus the resident population will deal with this topic until the year 2040. Furthermore the decision on a repository exploration has been sighted for the year 2013. As a final repository will not be ready for operation at that time, communities will have to deal with the storage of radioactive waste in local interim-storage facilities. The next generation has the opportunity to shape their future as well as the future of their community. Nevertheless the preconditions are to stay at the side as well as the political and social engagement of these young people. n order to study this aspect and the opportunities of action of young people, data was gathered by carrying out a standardised survey, interviewing 762 pupils in February 2014.

  4. Reproduction and population dynamics of Didelphis aurita Wied-Neuwied (Mammalia: Didelphimorphia in the periurban environment of Santa Catarina Island, in southern Brazil

    Directory of Open Access Journals (Sweden)

    Manoel dos Santos Filho

    2006-03-01

    Full Text Available The various aspects of reproduction and population dynamics of Didelphis aurita were studied through capture-recapture on Santa Catarina Island, in southern Brazil. Surveys were carried out from April 1996 to March 1997. The study area was located near the stream of a swamp in a disturbed Atlantic Forest area. On 880 trap-nights, 31 opossums were captured on 108 occasions during one year. The results of this paper indicate a seasonal polyestrous reproduction pattern. Autumn-winter population levels grew on account of juvenile recruitment. The sex ratio favored females in first captures and total captures. Emigration was discussed as being the main reason for the female bias. The effects of sampling procedures over deviation in the pouch young sex ratio of resident females were also discussed.

  5. Compulsory procurement of emission allowances. How will things will continue after the Copenhagen conference?; Emissionszertifikatepflichten fuer Kraftwerke. Wie geht es weiter nach der Kopenhagen-Konferenz?

    Energy Technology Data Exchange (ETDEWEB)

    Telke, Juergen [Kiel Univ. (Germany). Rechtswissenschaftliche Fakultaet

    2010-03-15

    German power plants are obliged to hold emission allowances for their carbon dioxide emissions. This obligation is largely established by the Kyoto Protocol, which was approved in 1997 and entered into force in 2005 and which specifies binding emission reduction goals for 37 industrial states. Because this agreement is only valid until the end of 2012, negotiations were held for a follow-on agreement in Copenhagen in mid-December 2009. This article explains the current legal situation as laid down in the Kyoto Protocol and the EU Emission Trade Directive that followed from it. It goes on to analyse the impact of the Copenhagen conference on the emission allowance trade and gives appropriate recommendations for action for German power plants.

  6. Wie vollzieht sich der (bürokratische) Wandel von Staatlichkeit? - das Beispiel der Europäisierung des Mehrebenenverwaltungssystems Deutschlands

    OpenAIRE

    Felder, Michael

    2007-01-01

    In dem Beitrag werden die Auswirkungen der Europäisierung auf die bundesdeutschen Verwaltungen auf einer breiten empirischen Grundlage analysiert. Dabei geht es zum einen um das Ausmaß der Europäisierung und zum anderen um die sich herausbildenden spezifischen Verarbeitungsformen. Europäisierung führt zu einem hohen Grad an Binnen- und Umweltkomplexität, deren Verarbeitung durch europa- und verwaltungspolitische Frames sowie durch strategisches Verhalten erfolgt. Der Oppprtunismus der Verwalt...

  7. How to find technical information. Pt. 2. Wie finde ich technische Informationen. T. 2. Elektrotechnik, Elektronik, Datenverarbeitung, Mess-, Steuerungs- und Reglungstechnik, Bauingenieurwesen, Architektur, Umweltschutz

    Energy Technology Data Exchange (ETDEWEB)

    Joswig, W

    1981-01-01

    This introduction into the finding and ordering of technical literature addresses both students and doctoral candidates as well as engineers which are already practising their profession. The first chapter - library science - gives a basic description of bibliographic research in an average scientific library: reading rooms and their function, structure of catalogues, structure of the reference library as well as lending and interlibrary lending methods. The technical information systems are described in detail. Finally, translation services and technical information and documentation centres are named. The second chapter - bibliographic research - lists the most important aids in finding technical references. Chapter three outlines the topical complex of scientific work. It provides information on how to organize written scientific publications in a formally correct way, how to quote and to list the references. Chapter four contains an index of terms from library and bibliographic science which is to help the beginner to understand the technical terms which cannot completely be excluded from this orientation aid.

  8. 11 practical lessons on how expenditure for rational use of power can become worthwhile investments; 11 Praxislehrstuecke, wie Ausgaben fuer einen rationellen Stromeinsatz zur lohnenden Investition werden

    Energy Technology Data Exchange (ETDEWEB)

    Humm, O.; Kopp, B.; Lainsecq, M. de

    1994-12-31

    The eleven contributions to this booklet give examples of how and where, power can be saved and what results can be expected. The examples are taken from industry and business, trading and administration, from housing developments and public buildings. The information on economic feasibility are documented according to a unified table without gaps: Investment and operating costs, annuities and amortization times. figs., tabs., refs.

  9. Study of effect of radiation on the parameters of quality of sterile males of Ceratitis Ceratitis capitata (Wied.) and their improvement aroma therapy

    International Nuclear Information System (INIS)

    Nouira, Manel

    2008-01-01

    In this present work, we are interested in studying the various stages in the production of sterile males, the effect of different doses of irradiation on longevity, compatibility and competitiveness of these males. And the effect of exposure of adults and pupae of Ceratitis to different doses of essential oil of ginger on their compatibility and competitiveness. (Author)

  10. Product quality control, irradiation and shipping procedures for mass-reared tephritid fruit flies for sterile insect release programmes

    International Nuclear Information System (INIS)

    1999-05-01

    This document represents the recommendations, reached by consensus of an international group of quality control experts, on the standard procedures for product quality control (QC) for mass reared tephritid flies that are to be used in Sterile Insect Technique (SIT) programs. In addition, the manual describes recommended methods of handling and packaging pupae during irradiation and shipment. Most of the procedures were designed specifically for use with Mediterranean fruit flies, Ceratitis capitata (Wied.), but they are applicable, with minor modification in some cases, for other tephritid species such as Caribbean fruit fly Anastrepha suspense, Mexican fruit fly A. ludens, and various Bactrocera species. The manual is evolving and subject to periodic updates. The future additions will include other fruit flies as the need is identified. If followed, procedures described in this manual will help ensure that the quality of mass-produced flies is measured accurately in a standardised fashion, allowing comparisons of quality over time and across rearing facilities and field programmes. Problems in rearing, irradiation and handling procedures, and strain quality can be identified and hopefully corrected before control programmes are affected. Tests and procedures described in this document are only part of a total quality control programme for tephritid fly production. The product QC evaluations included in this manual are, unless otherwise noted, required to be conducted during SIT programmes by the Field programme staff not the production staff. Additional product QC tests have been developed and their use is optional (see ancillary test section). Production and process QC evaluations (e.g., analysis of diet components, monitoring the rearing environment, yield of larvae, development rate, etc.) are not within the scope of this document. Quality specifications are included for minimum and mean acceptability of conventional strains of C. capitata, A. ludens, and A

  11. Die aanspraak op Goddelike steun in 'n konfliksituasie volgens die ...

    African Journals Online (AJOL)

    laws, and ethical or political principles. A synchronic investigation of relevant Old ... die toneel gebring met die vraag: 'aan wie se kant is God' (vgl bv The road to. Damascus 1979:6)? Volgens .... betrekking tot die Ou Testament: Hoe moet ons vasstel wie se kant God nou regtig kies, of wie veg aan die kant van God en wie ...

  12. Evaluation of ionizing radiation as quarantine treatment in Tephritidae (Diptera)

    International Nuclear Information System (INIS)

    Anjos Duarte, A.L. dos.

    1991-01-01

    Gamma irradiation was used to treat: eggs at different ages of C. capitata, third instar larvae of C. capitata, A. fraterculus and A. obliqua, papayas infested with a known number of C. capitata eggs; papayas and mangoes with C. capitata and A. fraterculus eggs and first instar and mangoes infested with third instar larvae of C. capitata and A. fraterculus. Third instar irradiated larvae of C. capitata were more sensitive than larvae of A. fraterculus and A. obliqua in terms of pupation rate. The pupation and emergence rate were different when C. capitata eggs of 24 and 48 h were irradiated in vitro and in papaya. C. capitata infesting either papaya or mango presented higher frequency of fruits heavily infested (more than 100 pupae per fruit), when compared with A. fraterculus. No emergence was found in C. capitata and A. fraterculus when infested fruits were irradiated at 40, 80 and 160 Gy. The dose of 150 Gy is recommended not only to provide no adult emergence but also to decrease the number of pupae when the commodity is infested by eggs and young larvae. (author)

  13. Larval feeding substrate and species significantly influence the effect of juvenile hormone analog on sexual development/performance in four tropical tephritid flies

    Science.gov (United States)

    The juvenile hormone analog methoprene reduces the amount of time it takes laboratory-reared Anastrepha suspensa (Caribbean fruit fly) males to reach sexual maturity by almost half. Here, we examined if methoprene exerted a similar effect on four other species of Anastrepha (A. ludens, A. obliqua, ...

  14. Mass rearing methods for fruit fly

    International Nuclear Information System (INIS)

    Dominguez Gordillo, J.C.

    1999-01-01

    The most common rearing methods used for mass rearing of fruit flies, with emphasis on those of economic importance in Mexico such as Anastrepha ludens (the Mexican fruit fly). Anastrepha obliqua (the mango and plum fruit fly) and the exotic fruit fly Ceratitis capitata (the Mediterranean fruit fly) are described here. (author)

  15. Determinação de danos do gorgulho, Conotrachelus Psidii Marshall e captura de mosca-das-frutas, Anastrepha fFaterculus Wiedemann, com óleo de andiroba, Carapa Guianensis em goiabeira serrana Acca Sellowiana

    OpenAIRE

    Rosa, Joatan Machado da

    2011-01-01

    A goiabeira-serrana (Acca sellowiana (Berg) Burret) pertencente a família Myrtaceae, é uma espécie nativa com ampla dispersão nos planaltos meridionais do sul do Brasil. Além de espécie nativa e produzir frutos de odor e sabor diferenciado, razão pela qual seu cultivo comercial é incentivado pelo Departamento de Conservação da Biodiversidade do Ministério do Meio Ambiente. A goiabeira serrana tem sido cultivada sob os sistemas orgânico, convencional, ou ainda, os frutos coletad...

  16. ''How small is small enough?'' or the limits of optimization; ''Wie wenig ist wenig genug?'' oder die Grenzen der Optimierung

    Energy Technology Data Exchange (ETDEWEB)

    Michel, R. [Hannover Univ. (Germany). Inst. fuer Radiooekologie und Strahlenschutz

    2016-07-01

    In order to kick-off a discussion of the reasons underlying the limits and reference values in radiation protection, the different types of exposures and exposure situations are discussed under these aspects. Arising problems are identified and a proposal for a trivial (de minimis) annual dose of 0,1 mSv is made. The outstanding importance of educating and preparing society for the process of optimization in existing and emergency exposure situations is emphasized.

  17. As the crack in the Geiger counter came. Historical scientific analysis and didactic aspects of the Geiger-Mueller counting tube; Wie das Knacken in den Geigerzaehler kam. Wissenschaftshistorische Analyse und fachdidaktische Aspekte des Geiger-Mueller Zaehlrohrs

    Energy Technology Data Exchange (ETDEWEB)

    Korff, Sebastian

    2014-11-10

    This thesis studies the creation and establishment history of this instrument called first electron counting tube in the years 1928 and 1929. It deals thereby with the last two years of the common work of Hans Geiger and Walter Mueller, from which the measuring instrument later renamed to Geiger-Mueller counting tube. The results of this scientific case study are didactically worked out and made usable for the teaching of physics in the school.

  18. Übersetzen als kulturelles Handeln: Zur politischen Motivation der Übersetzungsstrategien in Thomas Braschs Shakespeareübersetzung „Wie es euch gefällt”

    Directory of Open Access Journals (Sweden)

    Stephan Baumgärtel

    2006-12-01

    Full Text Available O artigo analisa as diferentes estratégias de tradução usadas por Thomas Brasch na sua tradução alemã de “As You Like It” de William Shakespeare, especialmente quanto aos estímulos à adaptação do texto de partida. O artigo parte da pressuposição que se pode experimentar o valor cultural de uma tradução independentemente de critérios de fidelidade, ou seja, quando se consegue mostrar como uma tradução cita e simultaneamente varia os seus dois (con-textos culturais. Nesse duplo distanciamento para com o contexto de partida e o contexto da própria língua alvo, manifesta-se a tradução enquanto um ato de intervenção cultural. A tradução de Brasch revela a sua riqueza emocional, lingüística e cultural a partir do momento em que o leitor percebe de que forma a convicção política do autor fundamenta as várias estratégias de tradução.

  19. Decontamination of the reactor pressure vessel and further internals and auxiliary systems in the German boiling water reactor Isar-1; Dekontamination des RDB inkl. der Einbauten wie Dampftrockner und Wasserabscheider sowie der angeschlossenen Hilfssysteme im deutschen Siedewasserreaktor ISAR 1

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, Michael; Sempere Belda, Luis; Basu, Ashim; Topf, Christian [AREVA GmbH, Erlangen (Germany). Abt. Chemistry Services; Erbacher, Thomas; Hiermer, Thomas; Schnurr, Bernhard; Appeldorn, Thomas van [E.ON Kernkraft GmbH, Kernkraftwerk ISAR, Essenbach (Germany). Abt. Maschinentechnik; Volkmann, Christian [ESG Engineering Services GmbH, Greifswald (Germany)

    2015-12-15

    The German nuclear power plant ISAR 1 (KKI 1), a 878 MWe boiling water reactor of KWU design, was shut down on March 17{sup th}, 2011. With the objective to minimize the plants activity inventory accompanied by the reduction of contact dose rates of systems and components the project 'decontamination of the RPV incl. steam dryer and water separator and the connected auxiliary systems' was implemented in the first quarter of 2015. One major focus within the project was the specific in-situ decontamination of the steam dryer.

  20. Ein überfälliger Dialog. Wie Frauen- und Geschlechterforschung und Soziologie miteinander ins Gespräch kommen können An Overdue Dialogue: How Women’s and Gender Studies and Sociology Converse

    Directory of Open Access Journals (Sweden)

    Heike Kahlert

    2007-03-01

    Full Text Available Die Monographie von Brigitte Aulenbacher zum Zusammenhang von Rationalisierung, Geschlecht und Gesellschaft ist in gegenstandsbezogener und methodologischer Hinsicht ambitioniert, überzeugend und lesenswert. Die Studie stellt eine solide, manchmal auch etwas zu weitschweifige und detailreiche Grundlage für weiterführende Diskussionen zwischen der (sozialwissenschaftlichen Frauen- und Geschlechterforschung und der Soziologie, genauer der Gesellschaftstheorie in zeitdiagnostischer Perspektive, Arbeits-, Industrie-, Organisations- und Techniksoziologie, dar.Brigitte Aulenbacher’s monograph on the relationship between rationalization, gender, and society is ambitious, convincing, and worth reading in terms of its focus on its object of study and its methodology. The study presents a solid, though sometimes too expansive and detailed, basis for continuing discussions between (social-scientific Women’s and Gender Studies and Sociology, which includes specifically social theory in current diagnostic perspective, and the sociologies of work, industry, and technology.