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Sample records for chant acari phytoseidae

  1. Variações morfológicas intra e interpopulacionais de Euseius citrifolius Denmark & Muma e Euseius concordis (Chant (Acari, Phytoseiidae Intra and interpopulational morphological variations of Euseius citrifolius Denmark & Muma and Euseius concordis (Chant (Acari, Phytoseiidae

    Directory of Open Access Journals (Sweden)

    Aloyséia Cristina da Silva Noronha

    2002-12-01

    Full Text Available The determination of morphologic variability within and between populations of phytoseiid mites is important for the precise species identification. Euseius citrifolius Denmark & Muma, 1970 and Euseius concordis (Chant, 1959 are phytoseiids commonly found on different crops in Brazil and other South American countries. The morphologic characterization of populations preliminarily identified as E. citrifolius and E. concordis was done through examination of 10 adult females and 10 adult males of each population and of 2 to 10 adult females and males resulting from crosses between those populations. The plant substrate and collection site of each population were: E. citrijolius: Bauhinia sp. in Arroio do Meio, Rio Grande do Sul, Coffea arabica Linnaeus in Campinas, São Paulo and Terminalia catappa Linnaeus in Petrolina, Pernambuco. E. concordis: Passiflora edulis Sims. i.flavicarpa Deg. in Arroio do Meio, Manihot esculenta (Crantz in Jaguariúna, São Paulo, Hevea brasiliensis Muell. Arg. in Pontes e Lacerda, Mato Grosso, T. catappa in Petrolina and C arabica in Viçosa, Minas Gerais. A comparison of the measurements of different structures of individuals of each population and of type specimens of E. citrifolius and E. concordis confirmed the preliminary identification of the populations. Significant relationships were observed between mean setal lengths and the respective ranges within each population. Females and males of E. citrifolius from Petrolina and E. concordis from Jaguariúna had some of the setae generally shorter than those of other populations of the same species. Measurements of males resulting from heterogamic crosses indicated that E. citrifolius and E. concordis reproduce by pseudo-arrhenotoky.

  2. Jazz Chants in English Language Teaching

    OpenAIRE

    Jin Zhang

    2011-01-01

    In this paper, we introduce the theoretical background of Jazz Chants and its definition, and then discuss the application of Jazz Chants in English Language Teaching, esp. the methods, including the definition of Jazz Chants, the methods which could be applied in the teaching, how to teach different chants to the students in different ages, and its effects in language acquisition.

  3. The status of chanting codices in the Serbian chant tradition

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    Peno Vesna

    2011-01-01

    Full Text Available The status of chanting codices, which is directly associated with the phenomenon of musical literacy, is examined in this paper by means of the examples of a few scarce neumed manuscripts that represent a primary source for the reconstruction of the Serbian music past. The following reasons have been stated in the Serbian musicological literature as an explanation for the lack of a larger number of preserved neumed books: 1 melodies were transmitted orally, 2 an intensive liturgical practice, in which chanting had a primary place and 3 historical circumstances due to which manuscripts were exposed to decay. For the sake of an objective evaluation of the probable level of chanting skill in the Middle ages in Serbia, the aforementioned reasons have been reconsidered and revised.

  4. Chants of the Tikuna Female Initiation Ritual

    OpenAIRE

    Emilio Angarita; Roberto Vento; Javier José; Marcelino Manduca; Ramos, Hugo A.

    2010-01-01

    Seven ritual chants of the Tikuna female initiation ritual, recorded in the Amazon Trapezium in 2008. The chants are transcribed in Tikuna with a Spanish translation.TO LISTEN THE MP3 FILES WITH THE CHANTS, SELECT "Supplementary Files" IN THE MENU ON THE RIGHT

  5. The status of chanting codices in the Serbian chant tradition

    OpenAIRE

    Peno Vesna

    2011-01-01

    The status of chanting codices, which is directly associated with the phenomenon of musical literacy, is examined in this paper by means of the examples of a few scarce neumed manuscripts that represent a primary source for the reconstruction of the Serbian music past. The following reasons have been stated in the Serbian musicological literature as an explanation for the lack of a larger number of preserved neumed books: 1) melodies were transmitted orally, 2) an intensive liturgical p...

  6. Oral and Written Transmission in Ethiopian Christian Chant

    OpenAIRE

    Jeffery, Peter; Monson, Ingrid; Shelemay, Kay

    1993-01-01

    Of all the musical traditions in the world among which fruitful comparisons with medieval European chant might be made, the chant tradition of the Ethiopian Orthodox Church promises to be especially informative. In Ethiopia one can actually witness many of the same processes of oral and written transmission as were or may have been active in medieval Europe. Music and literacy are taught in a single curriculum in ecclesiastical schools. Future singers begin to acquire the repertory by memoris...

  7. Zer sanr 'spirit guardians' chanted by pirma Gavq Lavq

    OpenAIRE

    Terrell, Jacob A.

    2013-01-01

    A .wav recording of the third chant performed when carrying out a funeral rite and its accompanying text translated and glossed into contemporary Akha and English. This is a sample of collection of recordings, videos, and texts related to Akha Zanr, the indigenous religion of the Akha (ahk) of northern Mainland Southeast Asia. It includes over ten hours of .wav recordings of Pirma Gavq, an Akha Shaman, reciting the religious text ?Buffalo Knowledge One?. This amounts 6,500 verses of religious...

  8. Gee Jm 'the ancestor alter' chanted by Pirma Gavq Lavq

    OpenAIRE

    Terrell, Jacob A.

    2013-01-01

    A .wav recording of the second chant performed when carrying out a funeral rite and its accompanying text translated and glossed into contemporary Akha and English. This is a sample of collection of recordings, videos, and texts related to Akha Zanr, the indigenous religion of the Akha (ahk) of northern Mainland Southeast Asia. It includes over ten hours of .wav recordings of Pirma Gavq, an Akha Shaman, reciting the religious text ?Buffalo Knowledge One?. This amounts 6,500 verses of religiou...

  9. Phytoseiidae (Acari: Mesostigmata) within citrus orchards in Florida: species distribution, relative and seasonal abundance within trees, associated vines and ground cover plants.

    Science.gov (United States)

    Childers, Carl C; Denmark, Harold A

    2011-08-01

    Seven citrus orchards on reduced- to no-pesticide spray programs were sampled for predacious mites in the family Phytoseiidae (Acari: Mesostigmata) in central and south central Florida. Inner and outer canopy leaves, open flowers, fruit, twigs, and trunk scrapings were sampled monthly between September 1994 and January 1996. Vines and ground cover plants were sampled monthly between September 1994 and January 1996 in five of these orchards. The two remaining orchards were on full herbicide programs and ground cover plants were absent. Thirty-three species of phytoseiid mites were identified from 35,405 specimens collected within citrus tree canopies within the seven citrus orchards, and 8,779 specimens from vines and ground cover plants within five of the seven orchards. The six most abundant phytoseiid species found within citrus tree canopies were: Euseius mesembrinus (Dean) (20,948), Typhlodromalus peregrinus (Muma) (8,628), Iphiseiodes quadripilis (Banks) (2,632), Typhlodromips dentilis (De Leon) (592), Typhlodromina subtropica Muma and Denmark (519), and Galendromus helveolus (Chant) (315). The six most abundant species found on vines or ground cover plants were: T. peregrinus (6,608), E. mesembrinus (788), T. dentilis (451), I. quadripilis (203), T. subtropica (90), and Proprioseiopsis asetus (Chant) (48). The remaining phytoseiids included: Amblyseius aerialis (Muma), A. herbicolus (Chant), A. largoensis (Chant), A. multidentatus (Chant), A. sp. near multidentatus, A. obtusus (Koch), Chelaseius vicinus (Muma), Euseius hibisci Chant, Galendromus gratus (Chant), Metaseiulus mcgregori (Chant), Neoseiulus mumai (Denmark), N. vagus (Denmark), Phytoscutus sexpilis (Muma), Phytoseiulus macropilis (Banks), Proprioseiopsis detritus (Muma), P. dorsatus (Muma), P. macrosetae (Banks), P. rotundus (Muma), P. solens (De Leon), Typhlodromips deleoni (Muma), T. dillus (De Leon), T. dimidiatus (De Leon), T. mastus Denmark and Muma, T. simplicissimus (De Leon), and T. sp

  10. Le chant militaire français : un patrimoine vivant

    OpenAIRE

    Bouzard, Thierry

    2008-01-01

    Le chant militaire reste un domaine complètement inexploré de l’histoire militaire française. Il est pourtant une source de renseignements de premier ordre sur le soldat, de son attitude face à la société, à la guerre, à la mort… Malgré l’importance de son rôle dans la formation des personnels et l’entretien de la cohésion, le chant militaire se transmet toujours exclusivement par tradition orale, pratique hors du cadre réglementaire. Si chaque époque a ses chants spécifiques, certains morcea...

  11. Stamping, Clapping and Chanting: An Ancient Learning Pathway?

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    Marion M. Long

    2006-04-01

    Full Text Available In this review I explore the effect of temporal integration as a means of improving learning in schoolchildren. I focus first on theorists that have linked physical activity with a positive effect on children’s learning and second to psychological studies that have established the existence of innate temporal patterns. These findings are related to a model of temporal integration that I have developed from Croce’s writings on aesthetics (1900. From philosophy to neurology, I discuss recent neurological findings relating to timing and conclude that an organ of temporal integration, regulation and coordination operates in the brain with respect to physical, intuitive and higher cognitive function. I link recent findings in neurophysiology to notably similar findings in recent biomusicological studies. The finding that humans have an involuntary physical response to loud, low-frequency sounds are attributed to an innate legacy of proto-music and proto-dance behaviour among hominids. I develop the model of temporal integration further by examining the literature on stamping and clapping patterns of ancient traditional dances in relation to Husserl’s writings on theoretical succession. From philosophy to pedagogy, I summarise the review by proposing stamping, clapping and chanting as a means of achieving improved temporal integration.

  12. L’arme du chant collectif au cœur du conflit biafrais

    OpenAIRE

    Ugochukwu, Françoise

    2011-01-01

    Si des auteurs comme Basden, Leith-Ross et Nwando Achebe ont mentionné dans leurs écrits la puissance du chant dans la culture igbo, le rôle des chants nés du conflit biafrais et les raisons de leur diffusion sont des questions qui n’ont jamais encore été vraiment abordées - ce sera donc le but de cet article. Partant d’un disque de seize chants en igbo (6), anglais (8) et ijo (2) enregistrés pendant la guerre civile nigériane à 15km du front, juste avant la chute d’Umuahia, capitale provisoi...

  13. Sensitivity of the space-based CHerenkov from Astrophysical Neutrinos Telescope (CHANT)

    CERN Document Server

    Neronov, A; Anchordoqui, L A; Adams, J; Olinto, A V

    2016-01-01

    Neutrinos with energies in the PeV to EeV range produce upgoing extensive air showers when they interact underground close enough to the surface of the Earth. We study the possibility for detection of such showers with a system of very wide field-of-view imaging atmospheric Cherenkov telescopes, named CHANT for CHerenkov from Astrophysical Neutrinos Telescope, pointing down to a strip below the Earth's horizon from space. We find that CHANT provides sufficient sensitivity for the study of the astrophysical neutrino flux in a wide energy range, from 10~PeV to 10~EeV. A space-based CHANT system can discover and study in detail the cosmogenic neutrino flux originating from interactions of ultra-high-energy cosmic rays in the intergalactic medium.

  14. Chanting of the inner space: on symphonic and concertante works by Milorad Marinković

    OpenAIRE

    Janković-Beguš Jelena

    2015-01-01

    The opus of contemporary Serbian composer Milorad Marinković (b. 1976), which encompasses works of choral, chamber, concertante and symphony music, leans towards classical forms of artistic music, Serbian folklore music, and Serbian Orthodox church chant. This paper deals with pieces composed for larger instrumental ensembles: Herojska uvertira (Heroic Overture) for symphony orchestra, Psalmodija (Psalmody) for symphony orchestra, Koncert za klavir i orkest...

  15. A computational comparison of theory and practice of scale intonation in Byzantine chant

    DEFF Research Database (Denmark)

    Panteli, Maria; Purwins, Hendrik

    2013-01-01

    Byzantine Chant performance practice is quantitatively compared to the Chrysanthine theory. The intonation of scale degrees is quantified, based on pitch class profiles. An analysis procedure is introduced that consists of the following steps: 1) Pitch class histograms are calculated via non...

  16. The Inheritance Plight of Yangtze River Chant and Its Rescue and Protection Measures

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    Tingting YAN

    2015-01-01

    Full Text Available “Yangtze River chant” is one of the first group of national non-material cultural heritages. The author has conducted extensive field researches on the inheritance status of Yangtze River chant. Achievement has been made from the application for non-material cultural heritage to the post application era, but there is also a plight. Scientific and practical protection policy should be made to ensure Yangtze River chant can be effectively preserved and inherited. As for problems such as the inheritance mode tends to be single, the inheritance investment is not enough, the evaluation mechanisms is still absent, and the working mechanism needs to be specified, the author has advocated protection measures such as to establish diversified inheritance modes, to improve the evaluation mechanism and to develop a clear division system of right and responsibility, etc.. This article is based on systematic methods, interviews and field researches to explore the internal mechanism of effective inheritance and ecological protection.

  17. Frequencies of the Buddhist Meditative Chant – Om Mani Padme Hum

    OpenAIRE

    Pereira, Contzen

    2016-01-01

    Om Mani Padme Hum is a six syllable mantra in Tibetian Buddhism associated with the bodhisattva – Avalokitesvara. This mantra as known by the Buddhist generates positive energies within the body through mystical vibrations and frequencies when chanted repeatedly. The mantra has shown enhanced cognitive effects in organisms without auditory apparatus where the interaction is assumed to be taking place at a cellular and biochemical level (Pereira 2015a, b; Pereira 2016a,b). Based on the results...

  18. Using Chants and Songs for English Language Teaching (ELT) in Primary Education

    OpenAIRE

    Esteban González, Almudena

    2015-01-01

    Many educators have repeatedly written on the benefits of songs in an English Language Teaching setting. In this Undergraduate Dissertation, we will tackle the main grounds why we share this opinion. We also intend to analyse why the use of chants and songs in an ELT classroom can help learners to communicate more effectively in this language. This use complies with the parameters of the Communicative Language Approach that goes beyond the more conventional mastery of grammar rules, struc...

  19. Uropodina species from Vietnam (Acari: Mesostigmata)

    Czech Academy of Sciences Publication Activity Database

    Kontschán, J.; Starý, Josef

    -, č. 2807 (2011), s. 1-28. ISSN 1175-5326 Institutional research plan: CEZ:AV0Z60660521 Keywords : Acari * Uropodina * new species Subject RIV: EH - Ecology, Behaviour Impact factor: 0.927, year: 2011

  20. Fabrication patrimoniale et imaginaires identitaires. Autour des chants et musiques en Algérie

    OpenAIRE

    Miliani, Hadj

    2013-01-01

    Après avoir présenté la complexité des acceptions concernant les notions de patrimoine, de tradition et de mémoire collective, cet article examine, à travers un parcours historique, les différentes modalités qui ont marqué la configuration du patrimoine musical et chanté en Algérie depuis environ un siècle. Initiatives individuelles, processus techniques, instances associatives et appareils culturels participent, en fonction de données historiques, idéologiques et sociales, à fonder ce qui se...

  1. Félix Arnaudin : Chants Populaires de la Grande Lande

    OpenAIRE

    2010-01-01

    Ces deux recueils forment les volumes III et IV de l’ensemble des huit volumes des œuvres complètes de Félix Arnaudin, dont le Parc Régional des Landes de Gascogne a entrepris l’édition. Au magnifique album de photos (quelque trois mille plaques de verre), aux Contes (I), aux Proverbes, Dictons, Devinettes, Formulettes, Prières (II), viennent donc s’ajouter ces deux recueils de chants. Doivent suivre le Dictionnaire de la Grande-Lande, également en deux volumes, dont la parution a été retardé...

  2. Le boeuf chez les Zoulous, c'est la sagaie: des armes et des chants en Afrique australe

    OpenAIRE

    Ricard, Alain

    1998-01-01

    Les monuments culturels des Bantous du sud sont leurs chants nationaux , leurs "poèmes d'éloges", comme disaient les premiers auditeurs européens. Ces chants - Izibongo des Zoulous, Dithoko des Bassoutos- , résonnent du fracas des armes . Avec les généalogies qu'ils contiennent souvent, ils ont permis de retracer l'histoire des sociétés bantoues d'Afrique australe et en particulier d'attester leur arrivée ancienne au sud du continent . Ces odes guerrières sont de grands textes épiques qui n'o...

  3. Influence of the webbing produced by Oligonychus ilicis (McGregor) (Acari: Tetranychidae) on associated predatory phytoseiids; Influencia da teia de Oligonychus ilicis (McGregor) (Acari: Tetranychidae) sobre os fitoseideos predadores associados

    Energy Technology Data Exchange (ETDEWEB)

    Franco, Renato A. [Bioagri Laboratorios Ltda., Piracicaba, SP (Brazil)], e-mail: r.franco@bioagri.com.br; Reis, Paulo R. [Empresa de Pesquisa Agropecuaria de Minas Gerais (EPAMIG), Belo Horizonte, MG (Brazil). Ecocentro], e-mail: paulo.rebelles@epamig.ufla.br; Zacarias, Mauricio S. [EMBRAPA Cafe, Lavras, MG (Brazil)], e-mail: zacarias@epamig.ufla.br; Oliveira, Daniel C. [Universidade Federal de Lavras (UFLA), MG (Brazil)

    2010-01-15

    Oligonychus ilicis (McGregor) is among those mite species that can cause damage to coffee plants (Coffea spp.). Species of Phytoseiidae acari are considered the most important and studied predatory mites. The objective of this study was to evaluate the effects of the webbing produced by O. ilicis on its predation by females of the phytoseiids Iphiseiodes zuluagai Denmark and Muma, Euseius citrifolius Denmark and Muma and Amblyseius herbicolus (Chant). Four bioassays were conducted, with three treatments and ten replicates. Each replicate consisted of 25 O. ilicis per experimental unit (a leaf disc of Coffea arabica) according to the tested developmental stage, in independent experiments. To spin the web, 15 adult females were put on each experimental unit for 24h; females were then removed, leaving only the web, and predators and prey to be tested were introduced. Predation was assessed after 24h. In the presence of webbing, the consumption of eggs, larvae and nymphs by I. zuluagai and eggs and larvae by E. citrifolius was lower. For A. herbicolus, egg predation was lower, but larval predation did not vary significantly and predation of nymphs and adults was higher in the presence of webbing. Predators as a whole were more efficient consuming larvae regardless of the presence of webbing. Considering the stages of O. ilicis altogether, webbing reduced the predation potential of I. zuluagai and E. citrifolius, but not of A. herbicolus. (author)

  4. Influence of the webbing produced by Oligonychus ilicis (McGregor) (Acari: Tetranychidae) on associated predatory phytoseiids

    International Nuclear Information System (INIS)

    Oligonychus ilicis (McGregor) is among those mite species that can cause damage to coffee plants (Coffea spp.). Species of Phytoseiidae acari are considered the most important and studied predatory mites. The objective of this study was to evaluate the effects of the webbing produced by O. ilicis on its predation by females of the phytoseiids Iphiseiodes zuluagai Denmark and Muma, Euseius citrifolius Denmark and Muma and Amblyseius herbicolus (Chant). Four bioassays were conducted, with three treatments and ten replicates. Each replicate consisted of 25 O. ilicis per experimental unit (a leaf disc of Coffea arabica) according to the tested developmental stage, in independent experiments. To spin the web, 15 adult females were put on each experimental unit for 24h; females were then removed, leaving only the web, and predators and prey to be tested were introduced. Predation was assessed after 24h. In the presence of webbing, the consumption of eggs, larvae and nymphs by I. zuluagai and eggs and larvae by E. citrifolius was lower. For A. herbicolus, egg predation was lower, but larval predation did not vary significantly and predation of nymphs and adults was higher in the presence of webbing. Predators as a whole were more efficient consuming larvae regardless of the presence of webbing. Considering the stages of O. ilicis altogether, webbing reduced the predation potential of I. zuluagai and E. citrifolius, but not of A. herbicolus. (author)

  5. L’idéologie dans les chants de l’EPON

    Directory of Open Access Journals (Sweden)

    Joëlle Dalègre

    2011-11-01

    Full Text Available L’idéologie de l’EPON, (organisation de jeunesse de la résistance grecque vue à travers ses chants, l’une de ses armes favorites de propagande.Cette communication se propose, à travers quelques chants, de montrer les grandes thèmes idéologiques de l’EPON, tout en la replaçant dans le cadre spécifique grec. Créée par le mouvement de résistance de masse du pays, l’EAM, l’EPON se propose d’encadrer les jeunes de tous âges, de les faire participer à la résistance, civile et parfois armée et de les conduire vers la construction de l’avenir radieux qui leur est promis à la fin de la guerre. Le chant fait partie des nombreux moyens de propagande utilisés par l’EPON (et précédemment par l’EON mais aussi d’un réel travail d’éducation entrepris en tous lieux par les cadres de l’organisation, souvent des enseignants. Justice, travail, école, prospérité, égalité homme/femme, des réalités inconnues dans la Grèce de l’avant-guerre qui ne peuvent que provoquer enthousiasme et espérance dans une génération prête à se sacrifier généreusement.Based on a number of songs, this communication summarizes the great ideological themes of EPON, while at the same time placing them in the specifically Greek context. Created by EAM, the national resistance movement, EPON set out to recruit the young of all ages, to make them participate in the civil and armed resistance against the occupiers, and to help them build the brilliant future they were promised at the end of the war. Song was one of the many forms of propaganda used by EPON, but also a real form of education undertaken everywhere by the heads of the organisation, who were often teachers. Justice, work, school, prosperity, equality between men and women, unknown realities in pre-war Greece that could only inspire enthusiasm and hope in a generation prepared to make any sacrifice.

  6. Chanting of the inner space: on symphonic and concertante works by Milorad Marinković

    Directory of Open Access Journals (Sweden)

    Janković-Beguš Jelena

    2015-01-01

    Full Text Available The opus of contemporary Serbian composer Milorad Marinković (b. 1976, which encompasses works of choral, chamber, concertante and symphony music, leans towards classical forms of artistic music, Serbian folklore music, and Serbian Orthodox church chant. This paper deals with pieces composed for larger instrumental ensembles: Herojska uvertira (Heroic Overture for symphony orchestra, Psalmodija (Psalmody for symphony orchestra, Koncert za klavir i orkestar (Piano concerto and Mala opera (Little Opera for chamber ensemble (septet with prominent soloist parts of flute and clarinet. Special attention is placed on different procedures used by Marinković to accomplish wholeness and integration of the musical tissue. This paper observes these pieces as examples of religious music, having in mind the composer’s own understanding of the notion. Among common characteristics of the observed works that justify this point of view are specific single movement forms and the prominent role of main thematic materials, a cyclic principle, and programmatic elements. References to Serbian church chant observed in Marinković’s instrumental works are also discussed, especially in parallel with the analogue procedures used by Ljubica Marić (1909- 2003, one of the composer’s role models. Although Marinković’s works for instrumental ensembles do not fall into the category of spiritual music in its narrow sense (as defined by the composer himself, in this paper they are nevertheless considered as “spiritual” in a broader sense, as an expression of the composer’s desire to spiritualize his entire artistic output.

  7. Israël : chants judéo-espagnols de la Méditerranée orientale

    OpenAIRE

    Shiloah, Amnon

    2011-01-01

    L’anthologie Chants judéo-espagnols de la Méditerranée orientale comprend vingt-cinq chants monodiques appartenant à cinq genres représentatifs de cette tradition. Ils sont interprétés à tour de rôle en solo et sans aucun accompagnement, par deux chanteuses vivant en Israël : Bienvenida « Berta » Aguado, originaire de Turquie, et Loretta « Dora » Gerassi, de Bulgarie. Le choix de restreindre l’anthologie à une région stylistique définie du riche patrimoine vocal judéo-espagnol qui survit dans...

  8. À propos du compte rendu des deux volumes de Chants populaires de la Grande Lande, de Félix Arnaudin

    OpenAIRE

    Mabru, Lothaire

    2010-01-01

    Dans le précédent volume des Cahiers de musiques traditionnelles, Eliane Gauzit et Pierre Bec ont produit un compte rendu concernant les deux tomes des Chants populaires de la Grande Lande de Félix Arnaudin, auxquels j’avais participé. Dans ce texte ils m’accusent de manque de rigueur scientifique et de négligence dans mon travail d’édition des chants collectés par Arnaudin. Ce n’est pas la première fois qu’ils s’en prennent à moi à ce sujet, puisqu’ils ont publiquement émis leurs critiques à...

  9. Patrones de búsqueda y respuesta funcional del acaro phytoseiidae neoseiulus anonymus (chant & baker), depredando a tetranychus urticae (koch)

    OpenAIRE

    Sánchez, Mauricio; Páramo, Gabriel; Corredor, Darío

    2011-01-01

    Las respuestas de hembras adultas de Tetrenychus urtieae (Koch) a condiciones variables de luz y topografía (reportadasen publicación anterior por los mismos autores). fueron comparadas con los patrones de búsqueda desarrollados por Neoseiulus anonymus (Chant & Baker) bajo las mismas condiciones experimentales. Mediante la medida de tales patrones se determinó la velocidad de búsqueda y se multiplicó por el campo de percepción con el fin de  determinar el área total de búsqueda del depred...

  10. SERENA FACCI - GABRIELLA SANTINI, Chants d’Italie. Pour chanter ensemble de 8 à 14 ans, Paris, Cité de la musique, 2012

    Directory of Open Access Journals (Sweden)

    Linda Cimardi

    2013-12-01

    Full Text Available Realizzato nell’ambito del progetto «Traditions chantées» della Cité de la musique, Chants d’Italie si struttura in due parti: un’introduzione al contesto storico-linguistico italiano e una sezione in cui sono analizzati ed elaborati didatticamente dieci canti della tradizione popolare italiana. Corredato di un CD audio, il volume di Facci e Santini fornisce dunque dei modelli di percorsi didattici sui canti del folklore italiano per studenti di scuola primaria e media francesi.

  11. A Quantitative Comparison of Chrysanthine Theory and Performance Practice of Scale Tuning, Steps, and Prominence of the Octoechos in Byzantine Chant

    DEFF Research Database (Denmark)

    Panteli, Maria; Purwins, Hendrik

    2013-01-01

    Byzantine Chant performance practice is computationally compared to the Chrysanthine theory of the eight Byzantine Tones (octoechos). Intonation, steps, and prominence of scale degrees are quantified, based on pitch class profiles. The novel procedure introduced here comprises the following....... The analysis of 94 Byzantine Chants performed by 4 singers shows a tendency of the singers to level theoretic particu- larities of the echos that stand out of the general norm in the octoechos: theoretically extremely large steps are diminished in performance. The empirical intonation of the IV. scale degree...

  12. New Oppioidea taxa from Madagascar (Acari: Oribatida

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    Mahunka, S.

    2012-07-01

    Full Text Available Within the framework of the continuous survey of the Madagascan Oribatida Fauna some newly surveyed Oppioidea (Acari: Oribatida species are discussed. Altogether 15 species are listed of the recently studied, identified and described taxa originating from several sites of the island (Malagasy Republic. Seven species of them are new to science and some other known only from few localities. One species represents also a new genus, Interbelba gen. nov. Three species, Berniniella bicarinata (Paoli, 1908, Quadroppia circumita (Hammer, 1961 and Discosuctobelba variosetosa (Hammer, 1961are recorded from Madagascar for the first time. With 22 figures.

  13. Les chants des oiseaux. Musiques, pratiques sociales et représentations du XIe au XVIIIe siècle.

    Directory of Open Access Journals (Sweden)

    Corinne Beck

    2007-10-01

    Full Text Available Le thème du chant des oiseaux a particulièrement été bien traité par les musicologues. L’objectif de ce projet consiste à reprendre cette thématique en l’élargissant à d’autres disciplines a priori éloignées, dont les problématiques centrales touchent essentiellement aux notions de nature, de langage et de mémoire. Jamais encore un projet autour d’un thème aussi étendu n’a été réalisé. L’ambition de ces rencontres interdisciplinaires et internationales vise alors à réunir les nombreux cherche...

  14. On the working process in writing of the Neumed book and its function in the Byzantine chant tradition: The contribution to the methodology of music literacy phenomenon

    Directory of Open Access Journals (Sweden)

    Peno Vesna

    2010-01-01

    Full Text Available The paper represents a kind of contribution to the methodology considering the phenomenon of music literacy. It suggests some guidelines to be observed for future research. Acquired findings of the main reasons for the emergence of the Neum notation as well as of the shaping process of the chanting book during the first stage of the written musical tradition (from the end of the 10th to the middle of the 11th centuries served as a starting point, but it was pointed out who might have been a scribal team member, what professional qualification he was expected to have and what was an organization of rewriting process like, depending on type of manuscripts that served as copying models. An interpretation of chanting book function was also presented and its main purpose in liturgical life practice after the establishing of the middle Byzantine Neum notation.

  15. Two new Uropodina species from Ethiopia (Acari: Mesostigmata)

    Czech Academy of Sciences Publication Activity Database

    Kontschán, J.; Starý, Josef

    2013-01-01

    Roč. 54, č. 1 (2013), s. 49-56. ISSN 1681-5556 Institutional research plan: CEZ:AV0Z60660521 Institutional support: RVO:60077344 Keywords : Acari * Uropodina * Afrotropical * Ethiopia * new species * new synonymy Subject RIV: EG - Zoology Impact factor: 0.500, year: 2013

  16. New Uropodina species and records from Malaysia (Acari: Mesostigmata)

    Czech Academy of Sciences Publication Activity Database

    Kontschán, J.; Starý, Josef

    2012-01-01

    Roč. 58, č. 2 (2012), s. 177-192. ISSN 1217-8837 Institutional research plan: CEZ:AV0Z60660521 Keywords : Acari * new records * new species * Malaysia Subject RIV: EH - Ecology, Behaviour Impact factor: 0.472, year: 2012

  17. 藏传佛教寺院诵经音乐初论%Elementary Theory for the chanting music in Tibetan Buddhism temples

    Institute of Scientific and Technical Information of China (English)

    才让措

    2012-01-01

      In the music o f Tibetan Buddhism,the tone of Buddhists chanting sutras is the very produc-tion filled with Tibetan culture accumulation . Of course,its coming into being must have follo wed certain foundation and laws . T he tone o f chanting sutras in Tibetan Buddhism shares the feature of recitative, closely near to the tone o f languages . When coming to the tone of chanting sutras in Tibetan Buddhism, we will find that the most representative part is brought scribes . T hey would lead the Lamas to recite and chant the scriptures together . T he brought scribes often adopt the way of subw oofer chanting to make themselves heard by thousand of people wherever in the hall . In this way they should pronounce loudly, but the pitch of voice must be low and deep,to express a feeling of solemn and respectful,dignified and holy .%  在藏传佛教音乐里寺院僧人诵经的音调是极赋有藏族文化积淀的产物,它的产生必定有其遵循的基础和规律。藏传佛教音乐诵经音调具有宣叙性,接近于语言的音调,最具代表性的当属寺院的领经师由他带领众喇嘛集体吟诵、唱诵相关的经文。领诵经文的经师常采用超低音的唱法,声调发音宏亮、低沉、穿透力强,并能产生一种肃穆、庄严浓厚、神圣的感觉,坐满几千人的大经堂每个角落都能清楚地听到领经师的声音。

  18. Neoseiulus fallacis (Garman) (Acari: Phytoseiidae) as a potential biological control agent for spider mites (Acari: Tetranychidae) in Virginia vineyards

    OpenAIRE

    Metzger, Jessica A.

    2001-01-01

    Outbreaks of spider mites (Acari: Tetranychidae) in vineyards have been increasing with the expansion of the industry in Virginia. Only three effective acaricides are registered on grapes and as resistance begins to occur, control options are limited. Biological control of spider mites by inoculative or inundative releases of predatory mites has been tried on a wide range of crops including grapes. This project examined the feasibility of using Neoseiulus fallacis (Acari: Phytoseiidae) as ...

  19. On the working process in writing of the Neumed book and its function in the Byzantine chant tradition: The contribution to the methodology of music literacy phenomenon

    OpenAIRE

    Peno Vesna

    2010-01-01

    The paper represents a kind of contribution to the methodology considering the phenomenon of music literacy. It suggests some guidelines to be observed for future research. Acquired findings of the main reasons for the emergence of the Neum notation as well as of the shaping process of the chanting book during the first stage of the written musical tradition (from the end of the 10th to the middle of the 11th centuries) served as a starting point, but it was pointed out who might have b...

  20. A new species of Brevipalpus Donnadieu (Acari: Tenuipalpidae) and key to the Egyptian species.

    Science.gov (United States)

    Halawa, Alaa M; Fawzy, Magdy M

    2014-01-01

    A new species, Brevipalpus noranae sp. nov. (Acari: Tenuipalpidae) is described and illustrated from females collected on Malus domestica Borkh and Citrus aurantium L. A key to the species of the genus Brevipalpus present in Egypt is provided. PMID:24869810

  1. Three new .i.Trachyuropoda./i. (Acari: Uropodina: Trachyuropodidae) species from the Neotropical region

    Czech Academy of Sciences Publication Activity Database

    Kontschán, J.; Starý, Josef

    2013-01-01

    Roč. 37, č. 1 (2013), s. 7-14. ISSN 1300-0179 Institutional support: RVO:60077344 Keywords : Acari * Uropodina * Trachyuropoda * Galápagos Islands Subject RIV: EG - Zoology Impact factor: 0.585, year: 2013

  2. Temperature-dependent development and reproductive traits of Tetranychus macfarlanei (Acari: Tetranychidae)

    DEFF Research Database (Denmark)

    Ullah, Mohammad Shaef; Haque, Md. Ahsanul; Nachman, Gösta;

    2012-01-01

    Development and reproductive traits of Tetranychus macfarlanei Baker & Pritchard (Acari: Tetranychidae) were investigated on kidney bean, Phaseolus vulgaris L., at eleven constant temperatures. Tetranychus macfarlanei was able to develop and complete its life cycle at temperatures ranging from 17...

  3. Primeiro registro de Tetranychus urticae (Acari: Tetranychidae) em mudas de teca no Brasil

    OpenAIRE

    Alexandre dos Santos; Vagner Aniceto Teixeira; Otávio Peres Filho; Milson Evaldo Serafin; Marçal Pedro Neto; Carlos Alberto da Cunha Oliveira

    2014-01-01

    O ácaro fitófago Tetranychus urticae (Kock, 1836) (Acari: Tetranychidae) foi relatado e suas injúrias caracterizadas pela primeira vez em viveiro de produção mudas de teca (Tectona grandis) no Brasil.

  4. Eupalopsellus prasadi Bagheri and Khanjani 2009 (Acari: Prostigmata, Eupalopsellidae), a New record for the Turkish acaro fauna

    OpenAIRE

    KASAP, İsmail; Çobanoğlu, Sultan; PEHLİVAN, SERKAN; KÖK, Şahin

    2013-01-01

    Females of Eupalopsellus prasadi Bagheri and Khanjani 2009, (Acari: Eupalopsellidae) were collected from the colony of Tetranychus urticae Koch (Acari: Tetranychidae) which are harmful on grown apple trees (Malus domestica Borkh. (Rosaceae)) in Bigalı village at Eceabat, Çanakkale. This is a new record for the Turkish fauna.

  5. Eriophyoid mites from Northeast China (Acari: Eriophyoidea).

    Science.gov (United States)

    Xue, Xiao-Feng; Guo, Jing-Feng; Hong, Xiao-Yue

    2013-01-01

    We describe and illustrate herein one new genus and eighteen new eriophyoid mite species (Acari: Eriophyoidea) collected in northeast China. They are: Shevtchenkella huzhongiensis sp. nov. on Ulmus davidiana Planch. var. japonica (Sarg. ex Rehder) Nakai (Ulmaceae), Shevtchenkella jingboicus sp. nov. on Acer sp. (Aceraceae), Calepitrimerus flexuosus sp. nov. on Spiraea flexuosa Fisch. ex Cambess. (Rosaceae), Calepitrimerus maximowiczii sp. nov. on Crataegus maximowiczii Schneid. (Rosaceae), Calepitrimerus pilosus sp. nov. on Agrimonia pilosa Ledeb. (Rosaceae), Calepitrimerus yichunensis sp. nov. on Sorbaria sorbifolia (L.) A.Br. (Rosaceae), Cupacarus oxyphyllus sp. nov. on Euonymus oxyphyllus Miq. (Cel-astraceae), Epitrimerus sambucus sp. nov. on Sambucus williamsii Hance (Caprifoliaceae), Epitrimerus wuyingensis sp. nov. on Acer sp. (Aceraceae), Longisolenidionus amurensis gen. nov & sp. nov. on Tilia amurensis Rupr. (Tiliaceae), Phyllocoptes jiagedaqiensis sp. nov. on Cunninghamia sp. (Taxodiaceae), Aculops huzhongensis sp. nov. on Salix sp. (Sali-caceae), Aculus huzhongsalixus sp. nov. on Salix sp. (Salicaceae), Tetra angelica sp. nov. on Angelica sp. (Apiaceae), Tetra jiagedaqia sp. nov. on Lespedeza sp. (Fabaceae), Vittacus mandshurica sp. nov. on Corylus sieboldiana Blume var. mandshurica (Maxim.) C. K. Schneid. (Betulaceae), Vittacus cannabus sp. nov. on Cannabis sativa L. (Moraceae), and Peralox dentatis sp. nov. on Ulmus sp. (Ulmaceae). Two species formerly assigned to Rhyncaphytoptus, R. abiesis (Xue, Song & Hong, 2006) and R. fabris (Xue, Song & Hong, 2006) were reassigned to Nalepella, based on the presence of seta vi on the apical shield, and other characteristics of Nalepella. One species formerly assigned to Rhyncaphytoptus, R. fargesis (Xue, Song & Hong, 2006) was reassigned to Pentaporca, based on the presence of seta vi on the apical shield, opisthosoma with five ridges and other characteristics of Pentaporca. At the same time, four new eriophyoid

  6. Le chant du monde

    OpenAIRE

    Roger, Philippe

    2015-01-01

    Jean Grémillon emploie la voix dans ses films de manière très différente de ses collègues. C’est l’ensemble du sonore – bruits, voix et musique – qu’il imagine de façon originale. Son traitement s’inscrit dans une vision du monde : Grémillon conçoit le cinématographe comme un biographe, une écriture de la vie. Cette vie est comprise sur deux plans : celui de l’homme et celui de l’univers. La voix selon Grémillon serait le reflet dans l’homme d’un macrocosme perçu comme énigme (le bruit) ou ré...

  7. Dana RAPPOPORT : Chants de la terre aux trois sangs. Musiques rituelles des Toraja de l’île de Sulawesi, Indonésie

    OpenAIRE

    Chemillier, Marc

    2013-01-01

    L’ouvrage que vient de publier Dana Rappoport est un monument hors du commun. Présenté sous la forme d’un coffret, il se compose de deux livres et d’un DVD-ROM. Le premier livre est un récit ethnographique. Le second est un spicilège, mot désuet signifiant choix de morceaux, qui présente les textes de nombreux chants en version bilingue complétée par un appareil critique qui rappelle, par son souci du détail, les poèmes nzakara dont Éric de Dampierre avait établi de si précieuses éditions (19...

  8. Mites and ticks (Acari. Chapter 7.4

    Directory of Open Access Journals (Sweden)

    Maria Navajas

    2010-07-01

    Full Text Available The inventory of the alien Acari of Europe includes 96 species alien to Europe and 5 cryptogenic species. Among the alien species, 87 are mites and 9 tick species. Besides ticks which are obligate ectoparasites, 14 mite species belong to the parasitic/predator regime. Among these species, some invaded Europe with rodents (8 spp. and others are parasitic to birds (2 spp. The remaining 77 mite species are all phytophagous and among these 40% belong to the Eriophyidae (37 spp. and 29% to the Tetranychidae (27 spp. families. These two families include the most significant agricultural pest. The rate of introductions has exponentially increased within the 20th century, the amplification of plant trade and agricultural commodities movements being the major invasion pathways. Most of the alien mite species (52% are from North America, Asia (25%, and Central and South America (10%. Half of the ticks (4 spp. alien to Europe originated from Africa. Most of the mite species are inconspicuous and data regarding invasive species and distribution range is only partially available. More research is needed for a better understanding of the ecological and economic effects of introduced Acari.

  9. The complete mitochondrial genome of Tetranychus truncatus Ehara (Acari: Tetranychidae).

    Science.gov (United States)

    Chen, Da-Song; Jin, Peng-Yu; Hong, Xiao-Yue

    2016-01-01

    The complete mitochondrial genome of Tetranychus truncatus Ehara (Acari: Tetranychidae) is a typical circular DNA with length of 13,089 bp (GenBank accession number: KM111296). The genome contains all 13 protein-coding genes (PCGs), an A + T-rich region, two rRNA genes and 22 tRNA genes. The A + T content of the mitochondrial genome is 84.5%. The AT-skew is positive (0.032) while the GC-skew is negative (-0.058). The gene arrangement is conserved in T. urticae, Panonychus citri and P. ulmi which are in the same family (Tetranychidae). The A + T-rich region is only 43 bp in length with high A + T content (97.7%). All the PCGs start with typical ATD codons. Eight PCGs have complete TAA stop codons, while five PCGs have an incomplete stop codon (T). PMID:25162745

  10. The complete mitochondrial genome of the scab mite Psoroptes cuniculi (Arthropoda: Arachnida) provides insights into Acari phylogeny

    OpenAIRE

    Gu, Xiao-Bin; Liu, Guo-Hua; Song, Hui-Qun; Liu, Tian-Yu; Yang, Guang-You; Zhu, Xing-Quan

    2014-01-01

    Background Limited available sequence information has greatly impeded population genetics, phylogenetics and systematics studies in the subclass Acari (mites and ticks). Mitochondrial (mt) DNA is well known to provide genetic markers for investigations in these areas, but complete mt genomic data have been lacking for many Acari species. Herein, we present the complete mt genome of the scab mite Psoroptes cuniculi. Methods P. cuniculi was collected from a naturally infected New Zealand white ...

  11. The Poetic Creation of Historical Culture——On the Aesthetic Achievements of Chanting in My Study Yuanzhai%历史的诗意抒写

    Institute of Scientific and Technical Information of China (English)

    轩小杨

    2011-01-01

    捧读仲元先生的《缘斋吟稿》,一曲《辽海行吟》咏罢,一种别样的诗情与诗韵随之荡漾开来,有一份厚重的历史感如鸣钟般在心头回响,余音不绝。%The classical poem collection Chanting in My Study Yuanzhai by Mr.Li Zhongyuan portrays historical figures,writes about scenic spots and appreciates famous works with the blending feelings of both a historian and a poet.The poet presents free thoughts and feelings in the historical contexts,making the historical facts affective,scenery imagic,and poetry accords with the rules of classical poems,and the book gets wide praises after its publication.Therefore,our magazine solicits contributions from 8 authors,elaborates the aesthetic connotations and the artistic characteristics of the poem collection so as to advance and revitalize the rules and laws of classical poems belonging to the glorious Chinese literature for further promotion and development.

  12. A new pomegranate pest for Turkey; Pomegranate false spidermite, Tenuipalpus punicae Pirtchard and Baker (Acari: Tenuipalpidae)

    OpenAIRE

    DÖKER, İsmail; KAZAK, Cengiz; KARUT, Kamil

    2013-01-01

    In this study, the pomegranate false spider mite Tenuipalpus punicae Pirtchard and Baker (Acari: Tenuipalpidae) collected from pomegranate growing areas of Adana province is determined for the first record for Turkish mite fauna. Some information related to world distribution, damage, biology and control of this pest are presented in the paper.

  13. Stigmaeus ceylani, a new species of the genus Stigmaeus Koch (Acari: Stigmaeidae) from Turkey

    OpenAIRE

    Uluçay, İsmail

    2015-01-01

    In this study a new species of Stigmaeus Koch (Acari: Stigmaeidae), Stigmaeus ceylani sp. nov., is described and illustrated. Specimens have been collected from the soil and litter under Punica granatum, 2014, İskenderun, Hatay, Turkey. Besides, the male, female, deutonymph, protonymph and larva of the species are illustrated in this article.  

  14. Investigations of Gamasina mites in natural and man-affected soils in Latvia (Acari: Mesostigmata)

    NARCIS (Netherlands)

    Salmane, I.

    2003-01-01

    Investigations of Gamasina mites in natural and man-affected soils in Latvia (Acari: Mesostigmata) A short overview is presented on Gamasina material collected in 22 natural and man-disturbed habitats in Latvia. Species diversity, average density and species dominance were investigated. Altogether 1

  15. Recharacterization of Gymnodamaeoidea and erection of Plateremaeoidea (Acari, Oribatei), with key to families and genera

    OpenAIRE

    Adilson D. Paschoal

    1989-01-01

    The present paper deals with the recharacterization of the Gymnodamaeoidea and the erection of Plateremaeoidea n. grad. (Acari, Oribatei). Gymnodamaeidae Grandjean, Aleurodamaeidae Paschoal & Johnston, and Idiodamaeidae Paschoal are recognised under the Gymnodamaeoidea. Plateremaeidae Tragardh, Pheroliodidae Paschoal, Nooliodidae Paschoal, Hammeriellidae Paschoal, Lyrifissellidae Paschoal, Pedrocortesellidae Paschoal, Licnodamaeidae Grandjean and Licnobelbidae Grandjean are included in Plater...

  16. Primeiro registro de Tetranychus urticae (Acari: Tetranychidae em mudas de teca no Brasil

    Directory of Open Access Journals (Sweden)

    Alexandre dos Santos

    2014-07-01

    Full Text Available O ácaro fitófago Tetranychus urticae (Kock, 1836 (Acari: Tetranychidae foi relatado e suas injúrias caracterizadas pela primeira vez em viveiro de produção mudas de teca (Tectona grandis no Brasil.

  17. Garrapatas (Acari: Ixodidae) asociadas a perros en diferentes ambientes de la provincia de Corrientes, Argentina Ticks (Acari: Ixodidae) of dogs in different environments of the Corrientes Province, Argentina

    OpenAIRE

    V.N. Debárbora; E.B. Oscherov; A.A. Guglielmone; Nava, S.

    2011-01-01

    Se estudiaron las garrapatas (Acari: Ixodidae) de perros en ambientes urbanos, periurbanos y rurales de la provincia de Corrientes por medio de colecciones mensuales durante un año en siete sitios diferentes. De los 138 perros examinados, en 87 (63,04%) se determinaron tres especies de garrapatas: Amblyomma tigrinum (n=35), Amblyomma ovale (n=2) y Rhipicephalus sanguineus sensu lato (n=523). Las mayores prevalencias para A. tigrinum y R. sanguineus s.l. fueron halladas en ambientes rurales. E...

  18. Five New Records of Raphignathoid Mites (Acari: Raphignathoidea from Poland/ Pięć Nowych Gatunków Roztoczy Z Nadrodziny Raphignathoidea (Acari Stwierdzonych W Faunie Polski

    Directory of Open Access Journals (Sweden)

    Doðan Salih

    2014-12-01

    Full Text Available Pięć nowych gatunków roztoczy (Acari: Raphignathoidea zostało odnoto- wanych jako nowe dla fauny Polski: trzy z rodziny Stigmaeidae, Eustigmaeus rhodomela (Koch, Mediolata obtecta Dónel et Doóan, Stigmaeus glabrisetus Summers, jeden z rodziny Cryptognathidae, Favognathus cucurbita (Berlese, i jeden z rodziny Barbutiidae, Barbuda anguineus (Berlese. Ostatni z wymienio- nych jest jednocześnie pierwszym stwierdzeniem przedstawiciela rodziny Barbutiidae w Polsce.

  19. Analysis of Chanting Application in Vocational Chinese Contemporary Poetry Teaching%浅析诵读法在中职语文现当代诗歌教学中的运用

    Institute of Scientific and Technical Information of China (English)

    刘阳

    2015-01-01

    As a compulsory public basic course ,Chinese course plays an important role in human‐istic cultivation and literacy improvement in secondary vocational schools ,and in which poetry educa‐tion assumes the most significant function in competence -oriented education .Starting with analyzing the current status of contemporary poetry teaching ,this paper interpretates the chanting status in con‐temporary poetry teaching ,and analyzes the applying skills and function of chanting in contemporary poetry teaching by combining vocational Chinese teaching practice . Chanting could help students to change the boring formal written language into verbal language ,thus the essence of contemporary poetry could be better appreciated .%作为一门必修公共基础课,语文课程在中等职业学校承担着重要的人文培育与素养提高的意义,而诗歌教学在其中承担着最为显著的素质教育功能。文章从分析现当代诗歌的教学现状入手,解读诵读法在现当代诗歌教学中的地位,并结合中职语文教学实践,剖析了诵读法在现当代诗歌教学中的运动技巧及作用。诵读能够帮助学生把枯燥的书面语言转化成有声语言,进而领略现当代诗歌文学的精华风采。

  20. Molecular analysis of Boophilus spp. (Acari: Ixodidae) tick strains.

    Science.gov (United States)

    Fuente, J; García-García, J C; González, D M; Izquierdo, G; Ochagavia, M E

    2000-10-01

    Boophilus spp. (Acari: Ixodidae) parasitize cattle and other farm and wild animals in tropical and subtropical regions of the world. Ticks belonging to the genus Boophilus have undergone evolutionary processes associated with habitat adaptation following biogeographical separation, resulting in strains with marked morphological differences. We have characterized at the molecular level B. microplus strains from Latin America and Australia, employing sequences derived from the bm86 coding region, an intron located within the bm86 gene, and DNA short tandem repeats (STR). A B. annulatus strain was employed for comparison. The results indicated that variation within the bm86 coding region is higher between B. microplus strains than between some B. microplus strains and B. annulatus. The sequence of the intron was not informative for phylogenetic analysis, varying among individuals of the same strain. Two STRs were identified in B. microplus (STRs BmM1 and BmM2) and one in B. annulatus (STR Ba1). Southern hybridization experiments with STRs BmM1 and BmM2 as a probe revealed the prevalence of dispersed moderately repeated DNA in the genome of B. microplus. The analysis of polymorphism at STR locus BmM1 evidenced differences within and between populations of B. microplus. These results support at the molecular level the existing differences between B. microplus strains and suggest tools to characterize these populations. PMID:10962158

  1. New Wolbachia supergroups detected in quill mites (Acari: Syringophilidae).

    Science.gov (United States)

    Glowska, Eliza; Dragun-Damian, Anna; Dabert, Miroslawa; Gerth, Michael

    2015-03-01

    Wolbachia is the most abundant intracellular bacterial genus infecting a wide range of arthropods and filarial nematodes. Wolbachia have evolved parasitic, mutualistic and commensal relationships with their hosts but in arthropods generally act as reproductive parasites, inducing a wide range of phenotypic effects such as cytoplasmic incompatibility, parthenogenesis, feminization and male-killing. Up to now, the genus has been divided into 14 supergroups successively named A-O. Here, we describe two new Wolbachia supergroups from syringophilid mites (Acari: Cheyletoidea). These obligatory ectoparasites of birds inhabit the quills of feathers in many avian groups. The species of this family reproduce in a haplodiploid mode sensu arrhenotoky and are usually strongly female-biased. Based on the sequences of four protein-coding genes (ftsZ, gltA and groEL and coxA) and the 16S rRNA we identified strains of three Wolbachia supergroups (F and two distinct, yet undescribed ones) in five quill mite species. Our results suggest that in some cases the distribution of the bacteria can be better correlated with the mite's bird host rather than with mite taxonomy as such. The discovery of two new Wolbachia supergroups not only broadens the knowledge of the diversity of this bacterium but also raises questions about potential effects induced in quill mites and transmission mechanisms of the endosymbionts in this peculiar bacteria-quill mite-bird system. PMID:25541519

  2. Historical review of the genus Dermanyssus Dugès, 1834 (Acari: Mesostigmata: Dermanyssidae)

    OpenAIRE

    Roy L; Chauve C.M.

    2007-01-01

    A synthetic review of the historical systematics of Dermanyssus Dugès, 1834 (Acari: Mesostigmata: Dermanyssidae) is provided. The classification at the specific level in this early genus has not really been clarified during more than a century despite its economic impact, and the history of the genus is complex and includes various stages. Moreover, Dermanyssus currently includes 23 species, whereas the last review took only 18 species into account. Changes in the species status and position ...

  3. A survey of ticks (Acari: Ixodidae) of companion animals in Australia

    OpenAIRE

    Greay, Telleasha L.; Oskam, Charlotte L.; Alexander W Gofton; Rees, Robert L; Ryan, Una M.; Irwin, Peter J.

    2016-01-01

    Background Ticks are among the most important vectors of pathogens affecting companion animals, and also cause health problems such as tick paralysis, anaemia, dermatitis, and secondary infections. Twenty ixodid species have previously been recorded on dogs, cats, and horses in Australia, including Rhipicephalus sanguineus, Ixodes holocyclus and Haemaphysalis longicornis, which transmit tick-borne diseases. A survey of hard ticks (Acari: Ixodidae) was conducted during 2012–2015 to investigate...

  4. Acaricidal and repellent activities of essential oil of Eucalyptus globulus against Dermanyssus gallinae (Acari: Mesostigmata)

    OpenAIRE

    Dehghani-Samani Amir; Madreseh-Ghahfarokhi Samin; Dehghani-Samani Azam; Pirali-Kheirabadi Khodadad

    2015-01-01

    Introduction: By considering an increase in drug resistance against red mites, finding the nonchemical herbal acaricide against Dermanyssus gallinae (De Geer) (Acari: Mesostigmata) is necessary to kill them and to reduce the chemical resistance against chemical acaricides in this specie. Dermanyssus gallinae is a potential vector of the causal agent of several viral diseases such as Equine encephalitis and St. Louis encephalitis. It can be a vector of bacteria such as Salmonella spp., Mycobac...

  5. A large parasitengonid mite (Acari, Erythraeoidea from the Early Cretaceous Crato Formation of Brazil

    Directory of Open Access Journals (Sweden)

    J. A. Dunlop

    2007-08-01

    Full Text Available A new large, fossil mite (Arachnida: Acari, Pararainbowia martilli n. gen. n. sp., is described from the Early Cretaceous (Aptian Crato Formation from Ceará State, Brazil. It is assigned to the Cohort Parasitengona and the superfamily Erythraeoidea, some extant members of which can reach up to seven millimetres in body length. Given that doubts have been raised about the identity of putative Crato feather mite eggs, this new fossil represents the first unequivocal record of Acari from the Crato Formation, the first non-amber record of an erythraeoid mite and the oldest named example of this superfamily. Fossil erythraeoids from Mesozoic and Tertiary ambers are briefly reviewed – including a widely overlooked Late Cretaceous species – with comments on Mesozoic mites in general. Thirteen Baltic amber erythraeoids have been formally described, but much unstudied material from various amber sources remains. Ein neues großes Milbenfossil (Arachnida: Acari, Pararainbowia martilli n. gen. n. sp., wird aus der Crato Formation (Unterkreide, Aptium des Ceará Gebietes in Brasilien beschrieben. Es wird der Kohorte Parasitengona und der Überfamilie Erythraeoidea zugeordnet; die modernen Vertreter erreichen eine Körperlänge bis zu sieben mm. Weil die Identität von Federmilbeneiern aus der Crato Formation in Frage gestellt wurde, ist dieser Neufund der erste klare Hinweis von Acari aus der Crato Formation. Es ist die erste erythraeoide Milbe, die nicht aus dem Bernstein stammt sowie das älteste genannte Beispiel dieser Überfamilie. Fossile erythraeoide Milben aus dem Bernstein des Mesozoikum und des Tertiärs werden kurz zusammengefasst – u. a. eine weitgehend übersehene Art aus der Oberkreide – mit allgemeinen Anmerkungen zu den mesozoischen Milben. Dreizehn erythraeoide Milbenarten sind aus dem baltischen Bernstein genannt und beschrieben worden, aber weiteres unbearbeitetes Material von verschiedenen Bernstein-Fundpunkten liegt noch vor

  6. De corticole fauna van platanen: i. Arachniden (Arachnida: Araneae, Pseudoscorpiones, Acari)

    OpenAIRE

    Noordijk, J.; Berg, M.P.

    2001-01-01

    The corticolous fauna of plane trees: I. Arachnids (Arachnida: Araneae, Pseudoscorpiones, Acari) From February until September 2000 an inventory was made of the bark-dwelling arthropod fauna of more than 400 plane trees (Platanus hybrida), all over the Netherlands. Arthropods were collected from bark and under the ‘loose’ bark fragments at a height of 160-175 cm from the ground. Algae, mosses and fungi are important resources for the corticolous fauna. Crevices in the tree trunk and loose bar...

  7. Hot-spot application of biocontrol agents to replace pesticides in large scale commercial rose farms in Kenya

    DEFF Research Database (Denmark)

    Gacheri, Catherine; Kigen, Thomas; Sigsgaard, Lene

    2015-01-01

    of the predatory mite Phytoseiulus persimilis (Acari: Phytoseidae) in large commercial rose greenhouses. Hot-spot treatments replaced acaricides except at high infestations and the two treatments were applied in seven greenhouses each. With the conventional treatment, acaricides were applied when T. urticae......-spot treatment. The cost of pest management was significantly lower in the hotspot- treated greenhouses than in the conventional treatment. However, there was no significant difference in the number of harvested stems from the two treatments. It can therefore be concluded that acaricides can be replaced by P...

  8. A new species of Atractides Koch, 1837 (Acari: Hydrachnidia, Hygrobatidae from Ethiopia, with a discussion on the biodiversity of the genus Atractides in the Afrotropical region

    Directory of Open Access Journals (Sweden)

    Vladimir Pesic

    2011-03-01

    Full Text Available A new species of Atractides Koch, 1837 (Acari, Hydrachnidia is described from Ethiopia. The world number of Atractides now tallies 297 species. The diversity of the genus Atractides in the Afrotropical region is briefly discussed.

  9. The complete mitochondrial genome of the citrus red mite Panonychus citri (Acari: Tetranychidae): high genome rearrangement and extremely truncated tRNAs

    OpenAIRE

    Dou Wei; Wang Bao-Jun; Wei Dan-Dan; Yuan Ming-Long; Wang Jin-Jun

    2010-01-01

    Abstract Background The family Tetranychidae (Chelicerata: Acari) includes ~1200 species, many of which are of agronomic importance. To date, mitochondrial genomes of only two Tetranychidae species have been sequenced, and it has been found that these two mitochondrial genomes are characterized by many unusual features in genome organization and structure such as gene order and nucleotide frequency. The scarcity of available sequence data has greatly impeded evolutionary studies in Acari (mit...

  10. Development of Iphiseiodes quadripilis (Banks) (Acari: Phytoseiidae) on pollen or mite diets and predation on Aculops pelekassi (Keifer) (Acari: Eriophyidae) in the laboratory.

    Science.gov (United States)

    Villanueva, Raul T; Childers, Carl C

    2007-02-01

    Development and reproduction of Iphiseiodes quadripilis (Banks) were evaluated on single food diets of pollen (Malephora crocea Jacquin [ice plant] or Quercus sp. [oak]), spider mites, [Eutetranychus banksi (McGregor) or Panonychus citri (McGregor) (Acari: Tetranychidae)], or the citrus rust mite Phyllocoptruta oleivora (Ashmead) (Acari: Eriophyidae). Experiments were conducted in an environmental chamber at 28 degrees +/- 1 degrees C, 14:10 (L:D) daylength, and 45% RH. I. quadripilis completed development and laid viable eggs that subsequently hatched on diets of either ice plant or oak pollen or eggs and motile stages of E. banksi. P. citri was acceptable as prey, but survival of larvae to adults was only 36%, whereas survival on E. banksi, ice plant pollen, and oak pollen was 48, 60, and 68%, respectively. The webbing produced by P. citri seemed to inhibit foraging behavior of I. quadripilis larvae and nymphs. Larvae of I. quadripilis developed only to the second nymphal instar on a diet of P. oleivora alone or water alone. Starved I. quadripilis females and deutonymphs were observed preying on the pink citrus rust mite, Aculops pelekassi (Keifer) (Eriophyidae). During 4-min observation trials, two series of I. quadripilis fed on 1.8 +/- 0.47 and 3.5 +/- 0.45 A. pelekassi motile stages after being starved for 6 and 24 h, respectively. I. quadripilis females did not prey on P. oleivora in arenas containing both rust mite species. PMID:17349110

  11. The symphonic music of the national schools in 20th century Europe in the repertoire of the Philharmonic of Cluj (1955-1989. Creative perspectives of C. Silvestri’s Chants Nostalgiques op. 27 no. 1

    Directory of Open Access Journals (Sweden)

    Simona Spiridon

    2015-09-01

    Full Text Available The present work focuses on the national cultures of the early 20th century in several European countries, such as Czechoslovakia, Poland, Hungary, Spain, Russia and Romania. Since my PhD thesis analyses the evolution of the Philharmonic “Transilvania”of Cluj between 1955-1989, there will be a thorough statistic of the concerts which were held during that period in which the orchestra performed musical pieces of the composers mentioned in this essay. For some concerts, there will also be stated the date when the concert took place, as well as the conductor who was invited to Cluj. There will also be an analysis of a piano work of the Romanian composer Constantin Silvestri (Chants Nostalgiques op. 27 no. 1 which I personally played a few years ago. The study will contain a musical bibliography, as well as several footnotes stating the documents found in the archives of the Philharmonic of Cluj.

  12. New feather mites of the subfamily Pterodectinae (Acari: Astigmata: Proctophyllodidae) from passerines (Aves: Passeriformes) in Mato Grosso do Sul, Brazil

    Czech Academy of Sciences Publication Activity Database

    Mironov, S. V.; Literák, I.; Čapek, Miroslav

    2008-01-01

    Roč. 1947, - (2008), s. 1-38. ISSN 1175-5326 Institutional research plan: CEZ:AV0Z60930519 Keywords : Acari * Astigmata * feather mites * systematics * Brazil * Proctophyllodidae * Aves * Passeriformes Subject RIV: EG - Zoology Impact factor: 0.740, year: 2008 http://www.mapress.com/zootaxa/2008/f/zt01947p038.pdf

  13. A novel disease affecting the predatory mite Phytoseiulus persimilis (Acari, Phytoseiidae): evidence for the involvement of bacteria

    NARCIS (Netherlands)

    Schütte, C.; Poitevin, O.J.L.; Dicke, M.

    2008-01-01

    Adult female Phytoseiulus persimilis Athias-Henriot (Acari, Phytoseiidae) of a laboratory population show drastic changes in foraging behavior, anatomy and life history compared to typical laboratory populations. We demonstrated earlier that the set of characteristic symptoms, called non-responding

  14. Effect of coconut palm proximities and Musa spp. germplasm resistance to colonization by Raoiella indica (Acari: Tenuipalpidae)

    Science.gov (United States)

    Although coconut (Cocos nucifera L.) is the predominant host for Raoiella indica Hirst (Acari: Tenuipalpidae), false spider mite infestations do occur on bananas and plantains (Musa spp. Colla). Since its introduction, the banana and plantain industries have been negatively impacted to different deg...

  15. A mite (Acari: Erythraeidae) as unusual parasite on an adult caddisfly (Trichoptera: Hydroptilidae) from the Dominican Republic (West Indies)

    OpenAIRE

    Botosaneanu, L.; Bolland, H.R.

    1997-01-01

    BOTOSANEANU, L. & H.R. BOLLAND, 1997. A mite (Acari: Erythraeidae) as unusual parasite on an adult caddisfly (Trichoptera: Hydroptilidae) from the Dominican Republic (West Indies). Studies Nat. Hist. Caribbean Region 73, Amsterdam 1997: 71-76. First known case of a caddisfly (adult Leucotrichia tubifex Flint, 1964) parasitized by a mite (larva of Leptus sp.) belonging to another group than Hydrachnellae.

  16. New feather mites of the subfamily Pterodectinae (Acari: Proctophyllodidae) from passerines and woodpeckers (Aves: Passeriformes and Piciformes) in Vietnam

    Czech Academy of Sciences Publication Activity Database

    Mironov, S.; Literák, I.; Hung, N. M.; Čapek, Miroslav

    2012-01-01

    Roč. 3440, č. 3440 (2012), s. 1-49. ISSN 1175-5326 R&D Projects: GA MŠk LC06073 Institutional support: RVO:68081766 Keywords : Acari * feather mites * Proctophyllodidae * systematics * Aves * Passeriformes * Piciformes * Vietnam Subject RIV: EG - Zoology Impact factor: 0.974, year: 2012 http://www.mapress.com/zootaxa/2012/f/zt03440p049.pdf

  17. Ticks (Acari: Ixodida) on wild carnivores in Brazil.

    Science.gov (United States)

    Labruna, Marcelo B; Jorge, Rodrigo S P; Sana, Dênis A; Jácomo, Anah Tereza A; Kashivakura, Cyntia K; Furtado, Mariana M; Ferro, Claudia; Perez, Samuel A; Silveira, Leandro; Santos, Tarcísio S; Marques, Samuel R; Morato, Ronaldo G; Nava, Alessandra; Adania, Cristina H; Teixeira, Rodrigo H F; Gomes, Albério A B; Conforti, Valéria A; Azevedo, Fernando C C; Prada, Cristiana S; Silva, Jean C R; Batista, Adriana F; Marvulo, Maria Fernanda V; Morato, Rose L G; Alho, Cleber J R; Pinter, Adriano; Ferreira, Patrícia M; Ferreira, Fernado; Barros-Battesti, Darci M

    2005-01-01

    The present study reports field data of ticks infesting wild carnivores captured from July 1998 to September 2004 in Brazil. Additional data were obtained from one tick collection and from previous published data of ticks on carnivores in Brazil. During field work, a total of 3437 ticks were collected from 89 Cerdocyon thous (crab-eating fox), 58 Chrysocyon brachyurus (maned wolf), 30 Puma concolor (puma), 26 Panthera onca (jaguar), 12 Procyon cancrivorus (crab-eating raccoon), 4 Speothos venaticus (bush dog), 6 Pseudalopex vetulus (hoary fox), 6 Nasua nasua (coati), 6 Leopardus pardalis (ocelot), 2 Leopardus tigrinus (oncilla), 1 Leopardus wiedii (margay), 1 Herpailurus yagouaroundi (jaguarundi), 1 Oncifelis colocolo (pampas cat), 1 Eira barbara (tayara), 1 Galictis vittata (grison), 1 Lontra longicaudis (neotropical otter), and 1 Potus flavus (kinkajou). Data obtained from the Acari Collection IBSP included a total of 381 tick specimens collected on 13 C. thous, 8 C. brachyurus, 3 P. concolor, 10 P. onca, 3 P. cancrivorus, 4 N. nasua, 1 L. pardalis, 1 L. wiedii, 4 H. yagouaroundi, 1 Galictis cuja (lesser grison), and 1 L. longicaudis. The only tick-infested carnivore species previously reported in Brazil, for which we do not present any field data are Pseudalopex gymnocercus (pampas fox), Conepatus chinga (Molina's hog-nosed skunk), and Conepatus semistriatus (striped hog-nosed skunk). We report the first tick records in Brazil on two Felidae species (O. colocolo, H. yagouaroundi), two Canidae species (P. vetulus, S. venaticus), one Procyonidae species (P. flavus) and one Mustelidae (E. barbara). Tick infestation remains unreported for 5 of the 26 Carnivora species native in Brazil: Oncifelis geoffroyi (Geoffroy's cat), Atelocynus microtis (short-eared dog), Pteronura brasiliensis (giant otter), Mustela africana (Amazon weasel), and Bassaricyon gabbii (olingo). Our field data comprise 16 tick species represented by the genera Amblyomma (12 species), Ixodes (1

  18. New species, new records and re-description of spider mites (Acari: Tetranychidae) from India.

    Science.gov (United States)

    Zeity, Mahran; Srinivasa, N; Gowda, C Chinnamade

    2016-01-01

    Two species of Tetranychidae (Acari), Oligonychus neotylus sp. nov. from Zea mays and Pennisetum purpureum (Poaceae) and Tetranychus hirsutus sp. nov. from Gymnema sylvestre R. Br. (Apocynaceae) are described from Karnataka state, south India. Tetranychus bambusae Wang and Ma is recorded for the first time from India and re-described. Four other species are reported for the first time from India viz., Oligonychus coniferarum (McGregor), Oligonychus duncombei Meyer, Tetranychus marianae McGregor and Tetranychus okinawanus Ehara from Cupressus sp., an undetermined grass, Centrosema pubescens and Adenium obesum, respectively. PMID:27394311

  19. L’apport d’exercices en voix chantée pour la correction phonétique en langue étrangère : le cas du français langue étrangère appliqué à des apprenants italiens d’âge adulte

    OpenAIRE

    CORNAZ, Sandra; Henrich, Nathalie; Vallée, Nathalie

    2014-01-01

    Divers travaux ont établi que la musique favorise le processus acquisitionnel. En didactique des langues, le rôle positif de la chanson sur la perception des éléments prosodiques est bien connu et il a d’ailleurs été récemment montré que la reconnaissance syllabique d’une langue étrangère est facilitée par le chant. Des investigations de terrain menées en 2006 à l’Université Stendhal de Grenoble ont révélé l’efficacité de la voix chantée pour la correction phonético-phonologique du français l...

  20. The residual and direct effects of reduced-risk and conventional miticides on twospotted spider mites, Tetranychus urticae (Acari: Tetranychidae) and predatory mites (Acari: Phytoseiidae)

    International Nuclear Information System (INIS)

    The residual effects of several reduced-risk and conventional miticides were evaluated in strawberries (Fragaria × ananassa Duchesne) on the twospotted spider mite (TSSM), Tetranychus urticae Koch (Acari: Tetranychidae) and on 2 predatory mites, Neoseiulus californicus McGregor and Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseiidae). Experiments were conducted in the laboratory and greenhouse. The greenhouse experiments also tested the direct effects of the miticides on TSSM. The efficacy of conventional and reduced-risk miticides was evaluated on strawberry leaf discs and on whole plants for control of TSSM. Furthermore, the residual effects of these miticides were evaluated on whole strawberry plants against selective predatory mites. For TSSM, 5 treatments were evaluated: a conventional miticide; fenbutatin-oxide (Vendex[reg]) and 3 reduced-risk miticides; binfenazate (Acramite 50WP[reg]), activated garlic extract (Repel[reg]), sesame seed and castor oil (Wipeout[reg]), and a water-treated control. For predatory mites, the residual effects of only Acramite[reg] and Vendex[reg] were evaluated. Acramite[reg] was the most effective acaricide in reducing TSSM populations in both the laboratory and greenhouse experiments. Vendex[reg] and Wipeout[reg] were also effective in the laboratory, but did not cause significant reduction of TSSM in the greenhouse. Repel[reg] was the least effective of the 4 pesticides evaluated. Neither Acramite[reg] nor Vendex[reg] had a significant effect on either predatory mite species. However, there appeared to be more predatory mites on the Vendex[reg]-treated plants than on the Acramite[reg]-treated plants. There were significantly more predatory mites of both species on the cue plants, which were inoculated with TSSM versus the non-cue plants, which were not inoculated. (author)

  1. Pyrethroid resistance in Phytoseiulus macropilis (Acari: Phytoseiidae): cross-resistance, stability and effect of synergists.

    Science.gov (United States)

    Queiroz, Maria Cristina Vitelli; Sato, Mario Eidi

    2016-01-01

    Phytoseiulus macropilis Banks (Acari: Phytoseiidae) is an effective predator of Tetranychus urticae Koch (Acari: Tetranychidae). The objectives of this research were to study the stability of fenpropathrin resistance and the cross-resistance relationships with different pyrethroids, and also to evaluate the effect of synergists [piperonyl butoxide (PBO), diethyl maleate (DEM) and S,S,S-tributyl phosphorotrithioate (DEF)] on fenpropathrin resistant and susceptible strains of this predaceous mite. The stability of fenpropathrin resistance was studied under laboratory conditions, using P. macropilis populations with initial frequencies of 75 and 50% of resistant mites. The percentages of fenpropathrin resistant mites were evaluated monthly for a period of up to 12 months. A trend toward decreased resistance frequencies was observed only during the first 3-4 months. After this initial decrease, the fenpropathrin resistance was shown to be stable, maintaining constant resistance frequencies (around 30%) until the end of the evaluation period. Toxicity tests carried out using fenpropathrin resistant and susceptible strains of P. macropilis indicated strong positive cross-resistance between fenpropathrin and the pyrethroids bifenthrin and deltamethrin. Bioassays with the synergists DEM, DEF and PBO were also performed. The maximum synergism ratio (SR = LC50 without synergist/LC50 with synergist) detected for the three evaluated synergists (PBO, DEM, DEF) was 5.86 (for DEF), indicating low influence of enzyme detoxification processes in fenpropathrin resistance. PMID:26530989

  2. Canto Gregoriano: redutor de ansiedade de mães com filhos hospitalizados El Canto Gregoriano: reductor de la ansiedad de madres con hijos hospitalizados Gregorian chant: reducing anxiety of mothers with hospitalized children

    Directory of Open Access Journals (Sweden)

    Ana Paula Almeida

    2012-01-01

    Full Text Available OBJETIVO: Verificar a presença de alteração do estado de ansiedade das mães de crianças hospitalizadas com a audição de canto Gregoriano. MÉTODOS: Pesquisa descritiva, exploratória, correlacional com análise quantitativa, quase experimental. A coleta dos dados foi realizada no período de julho de 2009 a fevereiro de 2010. A amostra inicial foi de 71 mães e destas 28 concluíram todas as etapas da pesquisa. RESULTADOS: O uso do canto Gregoriano diminuiu o estado de ansiedade das mães de crianças hospitalizadas em um hospital pediátrico de atenção quaternária acomodadas em quartos individuais. CONCLUSÃO: É necessário investigar os possíveis efeitos do canto Gregoriano em outros ambientes do hospital e em outras formas de acomodação do cliente.OBJETIVO: Verificar la presencia de alteración del estado de ansiedad de las madres de niños hospitalizados con la audición del canto Gregoriano. MÉTODOS: Investigación descriptiva, exploratoria, correlacional con análisis cuantitativa, cuasi experimental. La recolección de los datos se realizó en el período de julio del 2009 a febrero del 2010. La muestra inicial fue de 71 madres y de éstas 28 concluyeron todas las etapas de la investigación. RESULTADOS: El uso del canto Gregoriano disminuyó el estado de ansiedad de las madres de niños hospitalizados en un hospital pediátrico de atención cuaternaria ubicados en cuartos individuales. CONCLUSIÓN: Es necesario investigar los posibles efectos del canto Gregoriano en otros ambientes del hospital y en otras formas de acomodación del cliente.OBJECTIVE: To determine whether Gregorian chant changes the state of anxiety of mothers with hospitalized children. METHODS: This study was descriptive, exploratory, and correlational with quasi-experimental, quantitative analysis. Data collection was completed during the period of July 2009 to February 2010. RESULTS: Seventy-one mothers were investigated, with 28 mothers meeting all of

  3. La moisson des Argonautiques et la poétique d’Apollonios dans le chant III Harvesting in Argonautica and Apollonios' poetics in book III La mietitura delle Argonautiche e la poetica di Apollonio nel canto III

    Directory of Open Access Journals (Sweden)

    Françoise Létoublon

    2013-05-01

    to correspond to no Homeric scheme, as if narrating this untold ordeal had the result of freeing Apollonius more and more from his dependance to Homer.Un examen détaillé des comparaisons du chant III des Argonautiques par rapport aux comparaisons homériques montre qu’Apollonios s’inspire très fortement de ses modèles, dans la forme et dans le lexique en particulier. La plupart du temps pourtant, il détourne les comparaisons homériques de leur contexte d’origine pour les remodeler à son dessein personnel. Dans la première partie du chant III, les comparaisons servent une volonté commune de montrer les troubles que l’amour apporte dans l’âme et le comportement de Médée. Dans la seconde, les épreuves de Jason donnent lieu de manière surprenante à des images guerrières pour décrire les préparatifs, mais ensuite, Apollonios a recours à un registre artisanal et agricole pour évoquer des tâches qui effectivement consistent en un attelage, un labour, un semis et une moisson. Le plus remarquable est que plusieurs comparaisons groupées vers la fin du chant ne semblent répondre à aucun modèle homérique, comme si le récit de cette épreuve inédite avait peu à peu libéré Apollonios de sa dépendance par rapport à Homère.

  4. Beklemishevia hispaniola n. sp., nuevo representante de la Cohorte Palaeosomata (Acari, Oribatei en España

    Directory of Open Access Journals (Sweden)

    Pérez-Iñigo, C.

    1996-12-01

    Full Text Available A new species of oribatid mite (Acari, Oribatei belonging to the family Ctenacaridae (Cohors Palaeosomata is described; this species was recorded several times in Spain as Beklemishevia galeodula Zachvatkin, 1945. The new species is easily distinguishable from the mentioned one because of the presence of three claws in every leg, a noticeable pigidial neotrichy and the absence of short, almost spiniform, setae on the pygidium.Se describe una nueva especie de oribátido (Acari, Oribatei perteneciente a la familia Ctenacaridae (Cohorte Palaeosomata que habia sido citada varias veces en España como Beklemishevia galeodula Zachvatkin, 1945, y de la que se diferencia por presentar tres uñas en todas las patas, una acentuada neotriquia pigidial y carecer de setas cortas espiniformes en el pigidio.

  5. Prolixus (Acari: Trombidiformes: Tenuipalpidae) newly recorded from New Zealand: A new species from Cyperaceae and its ontogenetic patterns in chaetotaxy.

    Science.gov (United States)

    Xu, Yun; Zhang, Zhi-Qiang

    2014-01-01

    The genus Prolixus (Acari: Tenuipalpidae) was represented by two species from Australian sedges prior to this study. A new species, Prolixus meyerae sp. nov., is here described and illustrated from leaves of Gahnia (Cyperaceae) in Auckland, New Zealand. In this paper, we present the ontogenetic additions in idiosomal and leg chaetotaxy from larva to adult. A key to world species of Prolixus is also proposed. PMID:25543721

  6. The Poetic Creation of Historical Culture——On the Aesthetic Achievements of Chanting in My Study Yuanzhai%对主体情思的审美解读

    Institute of Scientific and Technical Information of China (English)

    阎丽杰

    2011-01-01

    The classical poem collection Chanting in My Study Yuanzhai by Mr.Li Zhongyuan portrays historical figures,writes about scenic spots and appreciates famous works with the blending feelings of both a historian and a poet.The poet presents free thoughts and feelings in the historical contexts,making the historical facts affective,scenery imagic,and poetry accords with the rules of classical poems,and the book gets wide praises after its publication.Therefore,our magazine solicits contributions from 8 authors,elaborates the aesthetic connotations and the artistic characteristics of the poem collection so as to advance and revitalize the rules and laws of classical poems belonging to the glorious Chinese literature for further promotion and development.%李仲元先生的《缘斋吟稿》以学识与情思赋予文本以丰富的历史文化意蕴,使人在欣赏美的诗文的同时,获得美的认知,美的享受,美的熏陶。

  7. The complete mitochondrial genome of the citrus red mite Panonychus citri (Acari: Tetranychidae: high genome rearrangement and extremely truncated tRNAs

    Directory of Open Access Journals (Sweden)

    Dou Wei

    2010-10-01

    Full Text Available Abstract Background The family Tetranychidae (Chelicerata: Acari includes ~1200 species, many of which are of agronomic importance. To date, mitochondrial genomes of only two Tetranychidae species have been sequenced, and it has been found that these two mitochondrial genomes are characterized by many unusual features in genome organization and structure such as gene order and nucleotide frequency. The scarcity of available sequence data has greatly impeded evolutionary studies in Acari (mites and ticks. Information on Tetranychidae mitochondrial genomes is quite important for phylogenetic evaluation and population genetics, as well as the molecular evolution of functional genes such as acaricide-resistance genes. In this study, we sequenced the complete mitochondrial genome of Panonychus citri (Family Tetranychidae, a worldwide citrus pest, and provide a comparison to other Acari. Results The mitochondrial genome of P. citri is a typical circular molecule of 13,077 bp, and contains the complete set of 37 genes that are usually found in metazoans. This is the smallest mitochondrial genome within all sequenced Acari and other Chelicerata, primarily due to the significant size reduction of protein coding genes (PCGs, a large rRNA gene, and the A + T-rich region. The mitochondrial gene order for P. citri is the same as those for P. ulmi and Tetranychus urticae, but distinctly different from other Acari by a series of gene translocations and/or inversions. The majority of the P. citri mitochondrial genome has a high A + T content (85.28%, which is also reflected by AT-rich codons being used more frequently, but exhibits a positive GC-skew (0.03. The Acari mitochondrial nad1 exhibits a faster amino acid substitution rate than other genes, and the variation of nucleotide substitution patterns of PCGs is significantly correlated with the G + C content. Most tRNA genes of P. citri are extremely truncated and atypical (44-65, 54.1 ± 4.1 bp, lacking

  8. Garrapatas (Acari: Ixodidae asociadas a perros en diferentes ambientes de la provincia de Corrientes, Argentina Ticks (Acari: Ixodidae of dogs in different environments of the Corrientes Province, Argentina

    Directory of Open Access Journals (Sweden)

    V.N. Debárbora

    2011-06-01

    Full Text Available Se estudiaron las garrapatas (Acari: Ixodidae de perros en ambientes urbanos, periurbanos y rurales de la provincia de Corrientes por medio de colecciones mensuales durante un año en siete sitios diferentes. De los 138 perros examinados, en 87 (63,04% se determinaron tres especies de garrapatas: Amblyomma tigrinum (n=35, Amblyomma ovale (n=2 y Rhipicephalus sanguineus sensu lato (n=523. Las mayores prevalencias para A. tigrinum y R. sanguineus s.l. fueron halladas en ambientes rurales. Especímenes de R. sanguineus s.l. fueron detectados a lo largo de todo el año, con picos de abundancia en primavera y verano, A. tigrinum fue encontrada en otoño, invierno y primavera con un pico en esta última estación, mientras que A. ovale fue colectada sólo en primavera. Rhipicephalus sanguineus s.l. y A. tigrinum fueron halladas en todos los ambientes muestreados, pero el primer taxón fue siempre el más abundante. Teniendo en cuenta que las especies del complejo R. sanguineus son potenciales vectores de microorganismos patógenos para los perros y humanos, y debido a la alta prevalencia registrada en este estudio, queda en evidencia la relevancia de aplicar métodos para su control en las áreas incluidas en este estudio.Ticks (Acari: Ixodidae of dogs in urban, peri-urban and rural areas from the Corrientes Province, Argentina, were studied. They were monthly collected during one year at 7 different sites. A total of 138 dogs were examined, and 87 (63.04% of them were infested; and three species were determined: Amblyomma tigrinum (n=35, Amblyomma ovale (n=2 and Rhipicephalus sanguineus sensu lato (n=523. Both A. tigrinum and R. sanguineus s.l. had the highest prevalence in rural areas. Specimens of R. sanguineus s.l. were collected in the four seasons, but the peaks of abundance were detected in spring and summer. Amblyomma tigrinum was found in autumn, winter and spring, with the peak of abundance in spring, and the two specimens of A. ovale were

  9. First record of the genus .i.Bloszykiella./i. in Kenya with the description of .i.Bloszykiella tertia./i. sp n. (Acari: Uropodidae) from a .i.Pinus radiata./i. D. Don plantation

    Czech Academy of Sciences Publication Activity Database

    Kontschán, J.; Starý, Josef

    2015-01-01

    Roč. 56, č. 3 (2015), s. 629-635. ISSN 1681-5556 Institutional support: RVO:60077344 Keywords : Acari * new species * Pinus radiata plantation * Kenya Subject RIV: EG - Zoology Impact factor: 0.464, year: 2014

  10. Description of a new species of bat-associated argasid tick (Acari: Argasidae) from Brazil.

    Science.gov (United States)

    Dantas-Torres, Filipe; Venzal, José M; Bernardi, Leopoldo F O; Ferreira, Rodrigo L; Onofrio, Valéria C; Marcili, Arlei; Bermúdez, Sergio E; Ribeiro, Alberto F; Barros-Battesti, Darci M; Labruna, Marcelo B

    2012-02-01

    A new species of argasid tick (Acari: Argasidae) is described from immature and adult specimens collected from several localities in Brazil. A complete morphological account is provided for all postembryonic life stages, i.e., larva, nymph, female, and male. Ornithodoros cavernicolous n. sp. is the 113(th) in the genus. Morphologically, the new species shares common features, e.g., presence of well-developed cheeks and legs with micromammillate cuticle, with other bat-associated argasid ticks included in the subgenus Alectorobius. In particular, the new species is morphologically related to Ornithodoros azteci Matheson, with which it forms a species group. Phylogenetic analysis based on the 16S rRNA gene sequences supports the placement of the new species within a large clade that includes other New World bat-associated argasids. However, the new species seems to represent an independent lineage within the genus Ornithodoros. PMID:21955330

  11. Arthropod colonization of land--linking molecules and fossils in oribatid mites (Acari, Oribatida).

    Science.gov (United States)

    Schaefer, Ina; Norton, Roy A; Scheu, Stefan; Maraun, Mark

    2010-10-01

    Terrestrial fossils that document the early colonization of land are scarce for >100 my after the Cambrian explosion. This raises the question whether life on land did not exist or just did not fossilize. With a molecular dating technique, we analyzed the origin of terrestrial chelicerate microarthropods (Acari, Oribatida) which have a fossil record since the Middle Devonian that is exceptional among soil animals. Our results suggest that oribatid mites originated in the Precambrian (571+/-37 mya) and that the radiation of basal groups coincides with the gap in the terrestrial fossil record between the Cambrian explosion and the earliest fossilized records of continental ecosystems. Further, they suggest that the colonization of land started via the interstitial, approximately 150 my earlier than the oldest fossils of terrestrial ecosystems. Overall, the results imply that omnivorous and detritivorous arthropods formed a major component in early terrestrial food webs, thereby facilitating the invasion of terrestrial habitats by later colonizers of higher trophic levels. PMID:20420932

  12. Benefits and risks of the subcutaneous immunotherapy with acari extracts in allergic rhinoconjunctivitis and bronchial asthma

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    Olimpio Rodríguez-Santos

    2014-12-01

    Full Text Available The records of patients from the Allergology Service in the Previsora Policlinic, Camagüey were revised to evaluate benefits and risks of the subcutaneous immunotherapy (ITSC with extracts of acari. The study was observational, analytic and retrospective of cases and controls in allergic rhinoconjunctivitis and bronchial asthma. A total of 160 subjects, older than 18 years old, were chosen. Eighty out of them had already received ITSC with dose increase during 13 weeks and maintenance with monthly injections during 18 months. A total of 80 patients who only received prevention measures and medications during the crises were paired. Questionnaires were applied for quality of rhinoconjunctivitis life and asthma, about the consumption of medications and the frequency of the crises. The adverse events were measured, as they were local and systemic to the cutaneous tests, to the ITSC and the different pharmacological treatments. There was a significant increase of the punctuation of life quality questionnaires, (p=0.011. The consumption of medications decreased in both the cases and the controls, without significant differences (p=0.083. The frequency of the rhinitis and asthma crises decrease in the group of ITSC (p=0.029. Slight local and systemic reactions were reported in both groups with Odds ratio (OR=2.029 in the ITSC group, with a 95% confidence interval of 1.114–3.967 (p=0.019. The results show that the subcutaneous immunotherapy with acari offers benefits and few risks to patients with allergic rhinoconjunctivitis and asthma.

  13. Fitoseídeos (Acari: Phytoseiidae associados a cafezais e fragmentos florestais vizinhos Phytoseiids (Acari: Phytoseiidae associated to coffee plantations and adjacent forest fragments

    Directory of Open Access Journals (Sweden)

    Ester Azevedo Silva

    2010-10-01

    Full Text Available Existem poucas informações sobre a fauna de ácaros predadores (Phytoseiidae em ambientes naturais brasileiros adjacentes a agroecossistemas cafeeiros (Coffea spp. ou sobre a influência que essa vegetação exerce como reservatório de ácaros predadores. Neste estudo, objetivou-se avaliar a diversidade destes organismos em cafeeiros e fragmentos florestais adjacentes. Coletaram-se amostras das espécies Calyptranthes clusiifolia (Miq. O. Berg (Myrtaceae, Esenbeckia febrifuga (A. St.-Hil. A. Juss. ex Mart. (Rutaceae, Metrodorea stipularis Mart. (Rutaceae e Allophylus semidentatus (Miq. Radlk. (Sapindaceae, em oito fragmentos florestais, de 5 a 51 ha, e cafezais adjacentes, nos meses de junho (final período chuvoso e outubro (final período seco nos anos 2004 e 2005, na região Sul do Estado de Minas Gerais. Ácaros foram extraídos das folhas, utilizando o método de lavagem e, em seguida, montados em lâminas de microscopia em meio de Hoyer, para identificação específica. No total foram identificados 2.348 fitoseídeos, sendo 2.090 nos fragmentos florestais e 258 espécimes nos cafezais adjacentes, pertencentes a 38 espécies. Servindo-se de análise faunística, a espécie Iphiseiodes zuluagai Denmark & Muma, 1972 apresentou os melhores índices no agroecossistema cafeeiro, sendo muito frequente e constante nas épocas estudadas. Nos fragmentos florestais Amblyseius herbicolus Chant, 1959, Iphiseiodes affs. neonobilis Denmark & Muma, 1978, Leonseius regularis DeLeon, 1965 e Euseius alatus DeLeon, 1966 foram dominantes, muito abundantes, muito frequentes e constantes nas épocas estudadas. Podemos concluir que a vegetação nativa abriga ácaros predadores, inimigos naturais de ácaros-praga, que ocorrem na cultura cafeeira, possibilitando o desenvolvimento de programas de manejo ecológico com áreas de vegetação natural e agroecossistemas cafeeiros adjacentes.There is little information about the fauna of predatory mites

  14. Two new families (Acari: Alicorhagiidae and Platyhelminthes: Prorhynchidae) reported for the Hungarian fauna From leaf litter in the Bükk Mountains

    OpenAIRE

    Pfliegler, W.P.; Bolton, S.J.

    2016-01-01

    Two new members of the Hungarian fauna are reported, both of them were collected in beech forest leaf litter in the Bükk Mountains, North-East Hungary: Alicorhagia fragilis Berlese, 1910 (Arthropoda: Arachnida: Acari: Sarcopti-formes: Endeostigmata: Alicorhagiidae) and Geocentrophora baltica (Kennel, 1883) (Platyhelminthes: Rhabditophora: Trepaxonemata: Amplimatricata: 'Lecithoepitheliata': Prorhynchida: Prorhynchidae). The families Alicorhagiidae and Prorhynchidae both represent...

  15. Evaluation of corn plant as potential banker plant for supporting predatory gall Midge, Feltiella acarisuga (Diptera: Cecidomyiidae) against Tetranychus urticae (Acari: Tetranychidae) in greenhouse vegetable production

    Science.gov (United States)

    The twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is one of the most important and highly polyphagous pests of vegetables and other crops worldwide. In this study, several experiments were conducted under laboratory and greenhouse conditions to evaluate whether corn plant ...

  16. A review of mites of the genus Neharpyrhynchus Fain (Acari: Harpirhynchidae) - ectoparasites of wild birds, including description of four new species

    Czech Academy of Sciences Publication Activity Database

    Martinů, J.; Dusbábek, František; Literák, I.

    2008-01-01

    Roč. 34, č. 2 (2008), s. 197-209. ISSN 0164-7954 Institutional research plan: CEZ:AV0Z60220518 Keywords : Acari * Neharpyrhynchus * Harpirhynchidae * mites * bird s * Czech Republic Subject RIV: EG - Zoology Impact factor: 0.438, year: 2008

  17. A new species of Aculops (Acari: Prostigmata: Eriophyidae) from Serbia on Dipsacus laciniatus L. (Dipsacaceae), a weed target of classical biological control in the United States of America

    Science.gov (United States)

    The new eriophyid mite species Aculops dipsaci n. sp. (Acari: Prostigmata: Eriophyidae) collected from Dipsacus laciniatus L. (Dipsacaceae) in northern Serbia is described and illustrated. Differential diagnosis is provided in comparison with Aculops salixis Xue, Song and Hong. This is the first e...

  18. Molecular characterization of a new monopartite dsRNA mycovirus from mycorrhizal Thelephora terrestris (Ehrh.) and its detection in soil oribatid mites (Acari: Oribatida)

    Czech Academy of Sciences Publication Activity Database

    Petrzik, Karel; Sarkisova, Tatiana; Starý, Josef; Koloniuk, Igor; Hrabáková, Lenka; Kubešová, Olga

    2016-01-01

    Roč. 489, FEB 2016 (2016), s. 12-19. ISSN 0042-6822 R&D Projects: GA MŠk LH13136 Institutional support: RVO:60077344 Keywords : Acari * Earthfan fungus * Mycovirus * Oribatida Subject RIV: EE - Microbiology, Virology Impact factor: 3.321, year: 2014

  19. Progress in the complete mitochondrial genomes of the Acari%蜱螨线粒体基因组研究进展

    Institute of Scientific and Technical Information of China (English)

    袁明龙; 王进军

    2012-01-01

    Acari, including ticks and mites, is one of the most diverse group of arthropods. In this paper, we reviewed the research progress in the 28 sequenced complete mitochondrial genomes of acari species. These mitochondrial genomes have several marked features; (1) There is significant variation in the size of mitochondrial genomes among the 28 acari species, and the mitochondrial genome of Panonychus citri (13 077 bp) is the smallest among all sequenced arthropods; (2) The base composition of all acari mitochondrial genomes are biased toward A and T, with six species harboring reverse GC-skew values (positive value) ; (3) The base composition and the position, length, copy number of the A +T-rich regions vary greatly among the 28 acari species, of which four tetranychid species harbor the highest A +T content within acari and the shortest A +T-rich region (44-57 bp) among arthropods; (4) High gene rearrangements are found in acari mitochondrial genomes, especially in those of Acariformes, but the rearrangements are not correlated to high taxonomic ranks; (5) The tRNA genes in some species of Acariformes are extremely truncated, presenting atypical cloverleaf structures. We suggest that it is necessary to sequence more acari mitochondrial genomes aiming to investigate whether these tRNA genes lacking both D- and T-arms are functional or not, to analyze the molecular mechanisms of evolution in acari mitochondrial genomes, and to carry out the acari mitochondrial transcriptome studies.%蜱螨亚纲包括蜱类和螨类,是节肢动物中物种多样性最高的类群之一.本文综述了当前已测序的28种蜱螨线粒体基因组的研究成果.概括起来,蜱螨线粒体基因组具有以下特点:(1)大小变异显著,其中柑橘全爪螨Panonychus citri线粒体基因组在目前已测节肢动物中最小(13077 bp);(2)一般碱基组成偏向A和T,但6种蜱螨具有相反的GC-偏斜(正值);(3)基因组的碱基组成及A+T富集区的位置、长度和

  20. L’apport d’exercices en voix chantée pour la correction phonétique en langue étrangère : le cas du français langue étrangère appliqué à des apprenants italiens d’âge adulte Using singing exercises as a tool for improving phonetic correction in foreign language teaching and learning: the case of French as a foreign language for native adult speakers of Italian

    OpenAIRE

    Nathalie Vallée; Nathalie Henrich; Sandra Cornaz

    2012-01-01

    Divers travaux ont établi que la musique favorise le processus acquisitionnel. En didactique des langues, le rôle positif de la chanson sur la perception des éléments prosodiques est bien connu et il a d’ailleurs été récemment montré que la reconnaissance syllabique d’une langue étrangère est facilitée par le chant. Des investigations de terrain menées en 2006 à l’Université Stendhal de Grenoble ont révélé l’efficacité de la voix chantée pour la correction phonético-phonologique du français l...

  1. A new species of Litarachna (Acari, Hydrachnidia, Pontarachnidae from a Caribbean mesophotic coral ecosystem

    Directory of Open Access Journals (Sweden)

    Vladimir Pesic

    2014-07-01

    Full Text Available New records of pontarachnid mites (Acari: Hydrachnidia from the Caribbean island of Puerto Rico are presented. Litarachna lopezae sp. n., from substrata collected from Bajo de Sico, a mesophotic coral reef ecosystem in Mona Passage off Puerto Rico, is described as new to science. The new species was collected from nearly 70 m depth, the greatest depth from which pontarachnid mites have been found until now. In addition, a Litarachna sp. was also found in association with the tube of the polychaete Sabellastarte magnifica (Shaw, 1800 at the shallow waters of north Puerto Rico.

  2. Primeiro registro de Oligonychus yothersi (McGregor (Acari: Tetranychidae em Eucalyptus grandis Hill ex Maiden no Brasil First record of Oligonychus yothersi (McGregor (Acari: Tetranychidae on Eucalyptus grandis Hill ex Maiden in Brazil

    Directory of Open Access Journals (Sweden)

    Fabrício Fagundes Pereira

    2005-08-01

    Full Text Available Relata-se a infestação de um ácaro-vermelho em mudas clonais de Eucalyptus grandis Hill ex Maiden, mantidas em casa de vegetação no município de Martinho Campos, Minas Gerais. O ácaro foi observado na parte superior das folhas que exibiam sinais de sucção de seiva e bronzeamento. Essas injúrias causaram desenvolvimento anormal e morte de plantas. O ácaro foi identificado como Oligonychus yothersi (McGregor (Acari: Tetranychidae, e isso representa o primeiro registro dessa espécie em mudas clonais de E. grandis no Brasil.An infestation of the red spider mite was reported in clone seedlings of Eucalyptus grandis Hill ex Maiden under greenhouse conditions, in the municipality of Martinho Campos, Minas Gerais State. The spider mite was found on the leaf upper faces with signs of sap suction and bronzing. Such injuries caused abnormal development and plant death. The spider mite was identified as Oligonychus yothersi (McGregor (Acari: Tetranychidae. This is the first record of O. yothersi on E. grandis seedlings in Brazil.

  3. Acaricidal and repellent activities of essential oil of Eucalyptus globulus against Dermanyssus gallinae (Acari: Mesostigmata

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    Dehghani-Samani Amir

    2015-07-01

    Full Text Available Introduction: By considering an increase in drug resistance against red mites, finding the nonchemical herbal acaricide against Dermanyssus gallinae (De Geer (Acari: Mesostigmata is necessary to kill them and to reduce the chemical resistance against chemical acaricides in this specie. Dermanyssus gallinae is a potential vector of the causal agent of several viral diseases such as Equine encephalitis and St. Louis encephalitis. It can be a vector of bacteria such as Salmonella spp., Mycobacterium spp. and Erysipelothrix rhusiopathiae. It is also known to cause itching dermatosis in humans. In this study acaricidal and repellent activities of essential oil of Eucalyptus globulus against Dermanyssus gallinae were studied. Methods: After extracting the essential oil, different concentrations of the plant extract were prepared. Then, acaricidal effect of different concentrations was tested on poultry red mite, Dermanyssus gallinae, by dropping 3-4 drops of essential oil on mites. Repellent activity of essential oil was tested by Y-tube olfactometer bioassay. After the test, total number of killed and repellent mites reported. Results: Concentration of 1:2 or 50% had more acaricidal effect on mites. Also essential oil of Eucalyptus globulus had repellent activity against red mites. Conclusion: This study showed that essential oil of Eucalyptus globulus had acaricidal and repellent activities against red mites. Hence it might be used as a herbal acaricide against it to kill and to reduce the chemical resistance in this specie.

  4. Historical review of the genus Dermanyssus Dugès, 1834 (Acari: Mesostigmata: Dermanyssidae

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    Roy L.

    2007-06-01

    Full Text Available A synthetic review of the historical systematics of Dermanyssus Dugès, 1834 (Acari: Mesostigmata: Dermanyssidae is provided. The classification at the specific level in this early genus has not really been clarified during more than a century despite its economic impact, and the history of the genus is complex and includes various stages. Moreover, Dermanyssus currently includes 23 species, whereas the last review took only 18 species into account. Changes in the species status and position in the genus Dermanyssus from 1834 until today are presented. The evolution of the generic definition is explored and compared with other genera of the group. How the discrimination between the different species evolved in the genus is also examined. Some difficulties in the specific definitions are discussed. A current diagnosis of the genus Dermanyssus is given. A table of the species included in this genus since its first description along with their respective current positions, a list of the currently included species in Dermanyssus with their hosts, and a world map presenting their geographic distribution are provided.

  5. Distribution of Chaetodactylus krombeini (Acari: Chaetodactylidae) within Osmia cornifrons (Hymenoptera: Megachilidae) nests: implications for population management.

    Science.gov (United States)

    McKinney, Matthew I; Park, Yong-Lak

    2013-06-01

    Chaetodactylus krombeini (Baker) (Acari: Chaetodactylidae) is a cleptoparasitic mite that negatively affects propagation of Osmia spp. (Hymenoptera: Megachilidae) for orchard pollination in the USA. This study was conducted to determine the effect of C. krombeini on mortality of male and female Osmia cornifrons, the Japanese hornfaced bee. A total of 107 O. cornifrons nests were examined to determine within-nest distribution of C. krombeini with regression analyses. A total of 30 mite-free O. cornifrons nests were observed and within-nest distribution of male and female O. cornifrons was determined with non-linear regression analyses. In addition, cocoons from 20 mite-infested O. cornifrons cells were examined to determine whether C. krombeini could be found inside cocoons of O. cornifrons. The results of this study showed that female O. cornifrons and C. krombeini were found more frequently in the inner part of the nest, and male O. cornifrons were found mostly in the center of the nest. No C. krombeini were found inside O. cornifrons cocoons. These results indicate that C. krombeini have a greater negative impact on mortality in the egg and larval stages of female O. cornifrons than in male O. cornifrons. Implications for management of C. krombeini and O. cornifrons populations for orchard pollination are discussed in this article. PMID:23100109

  6. Flagging versus dragging as sampling methods for nymphal Ixodes scapularis (Acari: Ixodidae)

    Science.gov (United States)

    Rulison, Eric L.; Kuczaj, Isis; Pang, Genevieve; Hickling, Graham J.; Tsao, Jean I.; Ginsberg, Howard S.

    2013-01-01

    The nymphal stage of the blacklegged tick, Ixodes scapularis (Acari: Ixodidae), is responsible for most transmission of Borrelia burgdorferi, the etiologic agent of Lyme disease, to humans in North America. From 2010 to fall of 2012, we compared two commonly used techniques, flagging and dragging, as sampling methods for nymphal I. scapularis at three sites, each with multiple sampling arrays (grids), in the eastern and central United States. Flagging and dragging collected comparable numbers of nymphs, with no consistent differences between methods. Dragging collected more nymphs than flagging in some samples, but these differences were not consistent among sites or sampling years. The ratio of nymphs collected by flagging vs dragging was not significantly related to shrub density, so habitat type did not have a strong effect on the relative efficacy of these methods. Therefore, although dragging collected more ticks in a few cases, the numbers collected by each method were so variable that neither technique had a clear advantage for sampling nymphal I. scapularis.

  7. Beat sampling accuracy in estimating spruce spider mite (Acari: Tetranychidae) populations and injury on juniper.

    Science.gov (United States)

    Shrewsbury, Paula M; Hardin, Mark R

    2004-08-01

    The use of a standardized beat sampling method for estimating spruce spider mite, Oligonychus ununguis (Jacobi) (Acari: Tetranychidae), densities on a widely used evergreen ornamental plant species, Juniperus chinensis variety 'Sargentii' A. Henry (Cupressaceae), was examined. There was a significant positive relationship between total spruce spider mite densities and spider mite densities from beat sampling on juniper. The slope and intercept of the relationship may be used by pest managers to predict total spider mite densities on plants from beat sample counts. Beat sampling dramatically underestimates the total number of spider mites on a foliage sample. The relationships between spruce spider mite feeding injury and spider mite density estimates from beat sampling juniper foliage and total spider mite counts on foliage were also examined. There was a significant positive relationship between spruce spider mite density as estimated from beat sampling and injury to the plants. There was a similar positive relationship between the total number of spruce spider mites and injury to the plants, suggesting that a pest manager could use beat sampling counts to estimate plant injury and related thresholds. These findings have important implications to decision-making for spruce spider mite control, especially as it relates to threshold levels and determining rates of predator releases. Further assessment of the effectiveness of beat and other sampling methods across multiple spider mite- host plant associations needs to be examined to enable pest managers to select sampling plans that are feasible and reliable. PMID:15384359

  8. Acaricidal activity of Juglans regia leaf extracts on Tetranychus viennensis and Tetranychus cinnabarinus (Acari: Tetranychidae).

    Science.gov (United States)

    Wang, Y N; Shi, G L; Zhao, L L; Liu, S Q; Yu, T Q; Clarke, S R; Sun, J H

    2007-08-01

    Leaf extracts of the walnut, Juglans regia L., were evaluated under laboratory conditions to determine their acaricidal activity on the mites Tetranychus cinnabarinus (Boisduval) and Tetranychus viennensis Zacher (Acari: Tetranychidae). Extracts had both contact and systemic toxicity to these mites. The four solvents tested for preparing crude extracts were petroleum ether, chloroform, ethyl acetate, and methanol. Methanol was the most efficient solvent, with an extraction rate from 17.06 + 0.80 to 20.27 +/- 0.28%. Petroleum ether was the least effective solvent, with extraction rates from 2.30 +/- 0.13 to 2.71 +/- 0.13%. However, the crude extracts with petroleum ether resulted in the highest mite mortality (79.04 +/- 0.52%) in a slide dip bioassay. Mites mortalities from the concentrated extracts prepared by chloroform, ethyl acetate, methanol, or distilled water were significantly lower than petroleum ether. The mean lethal concentrations (LC50) of the extracts from petroleum ether, chloroform, ethyl acetate, methanol, and distilled water to the two mite species were 0.73 +/- 0.04, 1.66 +/- 0.28, 4.96 +/- 0.35, 7.45 +/- 0.67, and 9.91 +/- 0.32 mg/ml, respectively. After liquid chromatography and thin-layer chromatography, the concentrated extracts of petroleum ether were separated into eight fractions and tested for acaricidal activity. Fraction 6 produced significantly higher mite mortality rates than the other groups, killing approximately 90% of both species. PMID:17849883

  9. Spatial distribution of galls caused by Aculus tetanothrix (Acari: Eriophyoidea) on arctic willows.

    Science.gov (United States)

    Kuczyński, Lechosław; Skoracka, Anna

    2005-01-01

    The distribution of galls caused by Aculus tetanothrix (Acari: Eriophyoidea) on three Salix species was studied. The factors influencing this distribution were analysed, i.e. willow species, study area and shoot length. Spatial pattern of gall distribution within the shoot was also examined. The study was conducted in Russia, Kola Peninsula. Densities of galls caused by A. tetanothrix differed significantly among willow species. Considerably higher gall density was recorded in the White Sea coast than in the Khibiny Mountains. This may be explained by the influence of a milder maritime climate that favors mite occurrence compared to a harsh and variable mountain climate that limits mite abundance. There was no relationship between the gall density and the shoot length. The highest density of galls was recorded on the inner offshoots; within the offshoot, there was a maximum density on the fifth leaf. This pattern was repeatable for all shoots studied, independent of the study area, willow species and length of shoots, suggesting the optimal conditions for A. tetanothrix exist on leaves in the middle part of a shoot. This distribution pattern may be an effect of the trade-off between the costs and benefits resulting from leaf quality and mite movement along the shoot. This hypothesis, however, needs to be tested experimentally. PMID:16132741

  10. Ticks (Acari: Ixodidae) infesting birds in an Atlantic rain forest region of Brazil.

    Science.gov (United States)

    Ogrzewalska, Maria; Pacheco, Richard C; Uezu, Alexandre; Richtzenhain, Leonardo J; Ferreira, Fernando; Labruna, Marcelo B

    2009-09-01

    Brazil has the third richest bird diversity of the world; however, there are few data concerning ticks (Acari: Ixodidae) parazitizing birds. The aim of the study was to report tick infestations on wild birds from an Atlantic rain forest region of Brazil. During 2 yr, ticks were collected from birds and from the environment in 12 forest sites. A total of 1,725 birds were captured representing 80 species from 24 families. In total, 223 (13%) birds were found infested by immature stages of Amblyomma ticks: 1,800 larvae and 539 nymphs. The prevalence of ticks was higher among birds from the families Thamnophilidae, Conopophagidae, and Momotidae. The most common tick parasitizing birds was Amblyomma nodosum Koch. Other tick species, Amblyomma coelebs Neumann, Amblyomma cajennense (F.), Amblyomma ovale Koch, Amblyomma longirostre (Koch), Amblyomma calcaratum Neumann, and Amblyomma naponense (Packard), were found sporadically. Among free-living ticks collected in the environment, A. cajennense was the most common, followed by A. coelebs, A. naponense, Amblyomma brasilense Aragão, and Hemaphysalis juxtakochi Cooley. PMID:19769058

  11. Study of Acari and Collembola Populations in Four Cultivation Systems in Dourados - MS

    Directory of Open Access Journals (Sweden)

    Rosilda Mara Mussury

    2002-09-01

    Full Text Available The impact four cultivation systems on the soil fauna was studied, using Oribatida and Gamasida acarids as bioindicators and collembolan. The research was carried out in experimental fields, located in EMBRAPA - CPAO in Dourados, Centerwest of Brazil from July 1997 to December 1999. The constant pasture system presented smaller impact on the soil fauna followed by agricultural cattle rotation and a direct plantation system. In the conventional plantation series, the populational density of the mesofauna organisms was low, especially collembolan families.O impacto de quatro sistemas de cultivo sobre a fauna de solo foram estudados, utilizando-se como bioindicadores os acari Oribatida e Gamasida e os Collembola. A pesquisa foi conduzida em campos experimentais, localizados na EMBRAPA - CPAO no município de Dourados, MS, no período de julho de 1997 à dezembro de 1999. O sistema de pastagem contínua apresentou menor impacto sobre a fauna de solo seguido da rotação agricultura pecuária e do sistema de plantio direto. Nas sucessões do plantio convencional, a densidade populacional dos organismos da mesofauna foi baixa, em especial as famílias de colembolos.

  12. Lâminas de irrigação e sombreamento na produção de biomassa de Acariçoba (Hydrocotyle umbellata L.)

    OpenAIRE

    Alves, N. M.; M.D.B. LIMA; J.R. Paula; G.A. SIMON

    2015-01-01

    RESUMO:A acariçoba é uma planta utilizada pela medicina ayurvédica e em cosméticos por possuir propriedades rejuvenescedoras e revitalizante do sistema nervoso e cérebro. Com objetivo de avaliar os caracteres agronômicos e o teor de flavonóides totais de acariçoba em resposta a aplicação de lâminas distintas de irrigação e sombreamento, foi conduzido um experimento em área localizada nas coordenadas 17º 47' 53'' latitude (S); longitude (W) - 51º 55' 53'', com altitude média de 648m, no períod...

  13. Acaricidal and Ovicidal Effects of Sage (Salvia officinalis L.) and Rosemary (Rosmarinus officinalis L.) (Lamiaceae) Extracts on Tetranychus urticae Koch (Acari: Tetranychidae)

    OpenAIRE

    Sibel YORULMAZ SALMAN; Sarıtaş, Semiha; KARA, Nimet; Ay, Recep

    2014-01-01

    Tetranychus urticae Koch (Acari: Tetranychidae) is a harmful pest for crops such as vegetables, fruits, and ornamental and industrial plants. The usage of plant extracts for pest control is seen as an alternative to synthetic pesticides. The effect of methanolic extracts obtained from sage (S. officinalis) and rosemary (R. officinalis) plants from the Lamiaceae family on T. urticae was researched in an effort to create an alternative to synthetic pesticides. The spray tower-leaf disk method w...

  14. Acaricidal and oviposition deterring effects of santalol identified in sandalwood oil against two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae)

    OpenAIRE

    Roh, Hyun Sik; Lim, Eu Gene; Kim, Jinwoo; Park, Chung Gyoo

    2011-01-01

    Thirty-four plant essential oils were screened for their acaricidal and oviposition deterrent activities against two-spotted spider mite (TSSM), Tetranychus urticae Koch (Acari: Tetranychidae), in the laboratory using a leaf-dip bioassay. From initial trials, sandalwood and common thyme oils were observed to be the most effective against TSSM adult females. Subsequent trials confirmed that only sandalwood oil was significantly active (87.2 ± 2.9% mortality) against TSSM adult females. Sandalw...

  15. Secondary structure of expansion segment D1 in LSU rDNA from Arachnida and its phylogenetic application in Eriophyoid mites and in Acari.

    Science.gov (United States)

    Wang, Zheng-Hang; Zhao, Ya-E; Xu, Yang; Hu, Li; Chen, Yi-Meng

    2015-12-01

    An increasing number of researchers have applied secondary-structure based multiple alignments of rDNA genes in phylogeny. These studies mostly depended on a few valuable divergent domains in LSU and SSU rDNA. Yet other divergent domains, e.g. D1, were poorly investigated and rarely used. However, these domains might contain additional evolutionary data and play a vital role in DNA-based phylogenetic study. Here, we investigated all available D1 sequences of Arachnida taxa and predicted corresponding secondary structures to help identify homologous positions in the D1 region. Long insertions were found exclusive to Eriophyoidea and folded into three newly proposed helices. Non-Acari taxa were all GC rich. In Acari, most Trombidiformes and all Mesostigmata (Parasitiformes) taxa were AT rich and Ixodida (Parasitiformes) GC rich; however there was no consistent base bias in Sarcoptiformes sequences. For Eriophyoid mites, genera Cecidophyopsis and Aceria were both well supported in MP, NJ, ME and ML tress based on D1 sequences, and clusters of Cecidophyopsis species were identical with former study. This demonstrated that the D1 region could act as a valuable molecular marker in phylogenetic reconstruction of Eriophyoidea. Additionally, D1 has been proven suitable in phylogenetic analysis at the family and genus level in Acari, but not in Opiliones. PMID:26420464

  16. Jazz Chants Born in a Piano Bar

    Directory of Open Access Journals (Sweden)

    Caroline Graham

    2010-01-01

    Full Text Available When I first arrived in New York in the late sixties, I began teaching ESL at New York University. I didn`t really think of teaching as a profession for me. I just thought it would pay the rent so I could do what I really wanted to do which was to sing and play ragtime piano in the piano bars. When I got my first piano job in an Irish Bar it was uptown, far away from NYU so I didn`t feel it was necessary to mention this night job to my boss.

  17. Description of a new argasid tick (Acari: Ixodida) from bat caves in Brazilian Amazon.

    Science.gov (United States)

    Nava, Santiago; Venzal, Jose M; Terassini, Flavio A; Mangold, Atilio J; Camargo, Luis Marcelo A; Labruna, Marcelo B

    2010-12-01

    Nothoaspis amazoniensis n. sp. (Acari: Ixodida: Argasidae) is described from adult and immature ticks (nymph II, nymph I, larva) collected from bat caves in the Brazilian Amazon. Also, 16S rDNA sequences are provided. The diagnostic characters for adults are the presence of false shield or nothoaspis, an anteriorly projecting hood covering the capitulum, a medial extension of palpal article I (flaps), genital plate extending from coxa I to IV, absence of 2 setae on the internal margin of the flaps, a minute hypostome without denticles, presence of a central pore in the base of hypostome, and a reticulate surface pattern on the posterior half of the nothoaspis in males. The nymph II stage is characterized by a hood that is small in relation to the capitulum, short coxal setae, palpal flaps lacking setae on the internal margin, long hypostome, pointed with dentition 4/4 apically, and the anterior half of the body is covered by a cell-like configuration. Nymph I stage is characterized by a hood, small in relation to the capitulum, dorsum of the body covered by a cell-like configuration, venter integument covered by a cell-like configuration, and hypostome dentition 4/4 with apices that are "V"-shaped. Diagnostic characters of the larvae are the number and size of dorsal setae, and the shape of scutum and hypostome. The new species appears to have a life cycle with a larva that feeds on bats, a non-feeding nymphal stage (nymph I), a feeding nymphal stage (nymph II), and adults that probably represent non-feeding stages. PMID:21158616

  18. Susceptibility of Tetranychus urticae Koch. (Acari: Tetranychidae to Isolates of Entomopathogenic Fungus Beauveria bassiana

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    Slavimira A. Draganova

    2010-01-01

    Full Text Available Bioassays with five isolates of the entomopathogenic fungus Beauveria bassiana (Bals.- Criv. Vuillemin were conducted under laboratory conditions with a goal to estimate their virulence to the two-spotted spider mite Tetranychus urticae Koch. (Acari: Tetranychidae. Common bean plants with mites were treated by spraying conidial suspensions of isolates at concentrations of 106, 107 and 108 conidia/ml. Lethal effects of the fungal isolates wereevaluated as percentages of cumulative daily mortality due to mycoses, corrected for mortality in the control variant. Virulence of the isolates was estimated based on values of the median lethal time (LT50 calculated by probit analysis for the variants treated with conidial suspensions at the concentration of 106 conidia/ml.The two-spotted spider mite was found susceptible to the examined isolates of the entomopathogenic fungus B. bassiana. Mycosis caused to T. urticae by the B. bassiana isolates 444 Bb and 445 Bb had fast lethal effect after treatment with conidial suspensions even at the concentration of 106 conidia/ml. The mean mortality values of host individuals were 83.78 ± 3.62% and 68.49 ± 4.28% on the first day, respectively, and up to 100% in both variants on the fourth day.The isolates 426 Bb, 444 Bb and 445 Bb of B. bassiana were highly virulent to two-spotted spider mites with values of the median lethal time varied within overlapped narrow confidence intervals from 0.122 to 1.084 days (average value 0.162 days, from 0.117 to 1.398 days (average value 0.146 days and from 0.106 to 1.162 days (average value 0.131 days,respectively. Significant differences regarding virulence of the three isolates at p-level < 0.05 could not been proved. The other two examined isolates were distinctly less virulent to T. urticae than these three B. bassiana isolates.

  19. TAMBO VIEJO: UN ASENTAMIENTO FORTIFICADO EN EL VALLE DE ACARÍ, PERÚ (Tambo Viejo: A Fortified Settlement in the Acari Valley, Peru

    Directory of Open Access Journals (Sweden)

    Lidio M. Valdez

    2013-10-01

    Full Text Available La aparición de los asentamientos fortificados y el origen del conflicto violento son temas poco discutidos en el contexto de la arqueología peruana. Considero que es oportuno investigar y determinar cuándo y por qué surgieron los primeros asentamientos fortificados. El propósito central de este artículo está precisamente orientado a responder tales interrogantes y discutir el tema del conflicto violento en el valle de Acarí y, por extensión, en la costa sur del Perú. Las evidencias arqueológicas disponibles señalan que, durante el periodo Intermedio Temprano, Tambo Viejo fue un asentamiento defendido por varias estructuras perimétricas. Otros sitios contemporáneos de Tambo Viejo en Acarí también fueron fortificados. Además, existe en el mismo valle evidencia tangible de violencia en la forma de prisioneros que posteriormente fueron decapitados. En contraste a la evidencia proveniente de Acarí, no existen asentamientos del periodo Intermedio Temprano identificables como fortificaciones, lo que hace de los sitios de Acarí los primeros asentamientos fortificados de toda la costa sur. ENGLISH: The emergence of violent conflict and of fortified settlements is a subject little studied within Peruvian archaeology. However, I consider it vital to investigate and determine the time and the reasons under which fortified settlements were first established. The central aim of this paper is to discuss when and why fortified settlements emerged first in the Acari Valley and, by extension, in the south coast of Peru. Available archaeological evidence indicates that during the Early Intermediate Period, Tambo Viejo was a fortified settlement protected by several massive walls. Other neighbouring sites in Acari were also fortified. Furthermore, in Acari there is conclusive evidence for violence in the form of decapitated individuals. In contrast to evidence coming from Acari, not a single Early Intermediate Period settlement from other

  20. A new species of Tenuipalpus sensu stricto (Acari: Tenuipalpidae) from Brazil, with ontogeny and a key to the known species.

    Science.gov (United States)

    Castro, Elizeu B; Feres, Reinaldo J F; Ochoa, Ronald; Bauchan, Gary R

    2016-01-01

    The Cerrado is the second largest Brazilian biome, and is considered to be a "hotspot" due the great concentration of endemic species and high rate of deforestation. Surveys of the mite fauna present in this biome have revealed a great number of new species. In this paper, we describe Tenuipalpus spinosaurus sp. nov. (Acari: Tenuipalpidae), a new species of Tenuipalpus sensu stricto, from adult females, deutonymphs, protonymphs, larvae and eggs, collected on Terminalia argentea (Combretaceae), from the Cerrado in Brazil. Females of this new species bear a prominent longitudinal crest on the opisthosoma. The ontogenetic changes in the idiosoma and leg chaetotaxy of all stages are presented. A key to the world species of Tenuipalpus sensu stricto is provided. PMID:27394345

  1. Demodex castoris sp. nov. (Acari: Demodecidae) parasitizing Castor fiber (Rodentia), and other parasitic arthropods associated with Castor spp.

    Science.gov (United States)

    Izdebska, Joanna N; Fryderyk, Sławomira; Rolbiecki, Leszek

    2016-02-11

    A new species of demodecid mite, Demodex castoris sp. nov. (Acari: Prostigmata: Demodecidae), is described based on adult stages from the skin of the nasal region of the Eurasian beaver Castor fiber Linnaeus, 1758, collected in Poland. This is the first detection of a representative demodecid mite in rodents of the suborder Castorimorpha and also represents the first detection of a skin mite in Eurasian beavers. The new species is a small skin mite (average 173 µm in length) characterized by sexual dimorphism related to body proportions. D. castoris sp. nov. was observed in 4 out of 6 beavers examined (66.6%), with a mean intensity of 10.8 and an intensity range of 2-23 ind. host(-1). This paper also contains a checklist of parasitic arthropods known from Castor spp. PMID:26865230

  2. The biology and fecundity of the citrus red mite Panonychus citri (McGregor) (Acari: Tetranychidae) at different temperatures under laboratory conditions

    OpenAIRE

    KASAP, İsmail

    2009-01-01

    The developmental time and fecundity of Panonychus citri (McGregor 1916) (Acari: Tetranychidae) on Washington navel sweet orange (Citrus sinensis (L.) Osb.) leaves were determined at 15, 20, 25, 30 and 35 ± 1 °C, 65 ± 10% RH, and a 16:8-h (L:D) photoperiod under laboratory conditions. Total development time of P. citri females was 37.2, 16.6, 12.2, 9.8, and 9.0 days at 15, 20, 25, 30, and 35 ± 1 °C, respectively. Total and daily egg production levels of P. citri were highest at 25 °C (25.6 an...

  3. New records of marine water mites (Acari: Hydrachnidia: Pontarachnidae) from the Pujada Bay (West Pacific Ocean) and the Andaman Sea (Indian Ocean)

    Digital Repository Service at National Institute of Oceanography (India)

    Pesic, V.; Chatterjee, T.; Troch, M. de; Ingole, B.S.

    entomologica serbica, 2009, 14(1): 129-132 UDC 595.42(265.5+267) [Short communication] NEW RECORDS OF MARINE WATER MITES (ACARI: HYDRACHNIDIA: PONTARACHNIDAE) FROM THE PUJADA BAY (WEST PACIFIC OCEAN) AND THE ANDAMAN SEA (INDIAN OCEAN) VLADIMIR PEŠIĆ1, TAPAS... CHATTERJEE2, MARLEEN DE TROCH3 and BABAN INGOLE4 1 University of Montenegro, Department of Biology, Cetinjski put b.b., 81000 Podgorica, Montenegro E-mail: pesicv@t-com.me 2 Indian School of Learning, Department of Biology, I.S.M. Annexe, P.O. – I...

  4. Life history of Neoseiulus californicus (McGregor, 1954) (Acari: Phytoseiidae) fed with castor bean (Ricinus communis L.) pollen in laboratory conditions.

    Science.gov (United States)

    Marafeli, P P; Reis, P R; Silveira, E C da; Souza-Pimentel, G C; de Toledo, M A

    2014-08-01

    The predatory mite, Neoseiulus californicus (McGregor, 1954) (Acari: Phytoseiidae) is one of the principal natural enemies of tetranychid mites in several countries, promoting efficient control of those mites in several food and ornamental crops. Pest attacks such as that of the spider mite, Tetranychus urticae Koch, 1836 (Acari: Tetranychidae), is one of the problems faced by farmers, especially in the greenhouse, due to the difficulty of its control with the use of chemicals because of the development of fast resistance making it hard to control it. The objective of this work was to study the life history of the predatory mite N. californicus as a contribution to its mass laboratory rearing, having castor bean plant [Ricinus communis L. (Euphorbiaceae)] pollen as food, for its subsequent use as a natural enemy of T. urticae on a cultivation of greenhouse rosebushes. The studies were carried out in the laboratory, at 25 ± 2°C of temperature, 70 ± 10% RH and a 14 hour photophase. The biological aspects and the fertility life table were appraised. Longevity of 32.9 days was verified for adult females and 40.4 days for males. The intrinsic rate of increase (rm) was 0.2 and the mean generation time (T) was 17.2 days. The population doubled every 4.1 days. The results obtained were similar to those in which the predatory mite N. californicus fed on T. urticae. PMID:25296220

  5. Screening of spider mites (Acari: Tetranychidae) for reproductive endosymbionts reveals links between co-infection and evolutionary history.

    Science.gov (United States)

    Zhang, Yan-Kai; Chen, Ya-Ting; Yang, Kun; Qiao, Ge-Xia; Hong, Xiao-Yue

    2016-01-01

    Reproductive endosymbionts have been shown to have wide-ranging effects on many aspects of their hosts' biology. A first step to understanding how these endosymbionts interact with their hosts is to determine their incidences. Here, we screened for four reproductive endosymbionts (Wolbachia, Cardinium, Spiroplasma and Rickettsia) in 28 populations of spider mites (Acari: Tetranychidae) representing 12 species. Each of the four endosymbionts were identified in at least some of the tested specimens, and their infection patterns showed variations at the species-level and population-level, suggesting their distributions can be correlated with both the phylogeny and ecology of the hosts. Co-infections of unrelated bacteria, especially double infections of Wolbachia and Cardinium within the same individuals were common. Spiroplasma and Rickettsia infections were specific to particular host species, respectively. Further, the evolutionary histories of these endosymbionts were inferred by comparing the phylogenies of them and their hosts. These findings can help to clarify the interactions between endosymbionts and arthropods. PMID:27291078

  6. Toxicity of acaricides to Raoiella indica and their selectivity for its predator, Amblyseius largoensis (Acari: Tenuipalpidae: Phytoseiidae).

    Science.gov (United States)

    de Assis, Carla P O; de Morais, Elisângela G F; Gondim, Manoel G C

    2013-07-01

    Raoiella indica Hirst (Acari: Tenuipalpidae) is considered a pest of coconut palm in Asia and the Middle East. This mite was recently introduced in the Americas, where it spread to several countries and expanded its range of hosts, causing heavy losses to coconut and banana production. The phytoseiid mite Amblyseius largoensis (Muma) is one of the predators most often encountered in coconut palms. Because the current prospects for the control of R. indica in the New World indicate the use of acaricides and the management of their natural enemies, the objective of this study was to evaluate the toxicity of selected acaricides to R. indica and the selectivity (i.e., toxicity to the predator relative to toxicity to the prey) for A. largoensis. Assays were performed by the immersion of banana leaf discs in acaricide solutions, followed by the placing of adult females of the pest or predator on the discs. Mortality of the mites was evaluated after 24 h, and the data obtained were subjected to probit analysis. Abamectin, fenpyroximate, milbemectin and spirodiclofen were the products most toxic to R. indica adults, whereas fenpyroximate and spirodiclofen were the most selective for A. largoensis. PMID:23229493

  7. New Miticides for Integrated Pest Management of Varroa destructor (Acari: Varroidae) in Honey Bee Colonies on the Canadian Prairies.

    Science.gov (United States)

    Vandervalk, L P; Nasr, M E; Dosdall, L M

    2014-12-01

    Varroa destructor Anderson and Trueman 2000 (Acari: Varroidae) is an ectoparasitic mite of the honey bee, Apis mellifera L. (Hymenoptera: Apidae). Honey bee colonies require extensive management to prevent mortality caused by varroa mites and the viruses they vector. New miticides (Thymovar and HopGuard) to manage varroa mites were evaluated during the spring and fall treatment windows of the Canadian prairies to determine their effectiveness as part of an integrated management strategy. Thymovar and HopGuard were evaluated alongside the currently used industry standards: Apivar and formic acid. Results demonstrated that Apivar and formic acid remain effective V. destructor management options under spring and fall conditions. Applications of Thymovar during spring were associated with a reduction in brood area, and therefore should be limited to the fall season. The miticide HopGuard was not effective in managing V. destructor, and alteration of the current delivery system is necessary. This study demonstrates the potential for new effective treatment options to supplement currently used V. destructor integrated pest management systems. PMID:26470066

  8. Transcriptome Analysis of the Carmine Spider Mite, Tetranychus cinnabarinus (Boisduval, 1867 (Acari: Tetranychidae, and Its Response to β-Sitosterol

    Directory of Open Access Journals (Sweden)

    Chunya Bu

    2015-01-01

    Full Text Available Tetranychus cinnabarinus (Acari: Tetranychidae is a worldwide polyphagous agricultural pest that has the title of resistance champion among arthropods. We reported previously the identification of the acaricidal compound β-sitosterol from Mentha piperita and Inula japonica. However, the acaricidal mechanism of β-sitosterol is unclear. Due to the limited genetic research carried out, we de novo assembled the transcriptome of T. cinnabarinus using Illumina sequencing and conducted a differential expression analysis of control and β-sitosterol-treated mites. In total, we obtained >5.4 G high-quality bases for each sample with unprecedented sequencing depth and assembled them into 22,941 unigenes. We identified 617 xenobiotic metabolism-related genes involved in detoxification, binding, and transporting of xenobiotics. A highly expanded xenobiotic metabolic system was found in mites. T. cinnabarinus detoxification genes—including carboxyl/cholinesterase and ABC transporter class C—were upregulated after β-sitosterol treatment. Defense-related proteins, such as Toll-like receptor, legumain, and serine proteases, were also activated. Furthermore, other important genes—such as the chloride channel protein, cytochrome b, carboxypeptidase, peritrophic membrane chitin binding protein, and calphostin—may also play important roles in mites’ response to β-sitosterol. Our results demonstrate that high-throughput-omics tool facilitates identification of xenobiotic metabolism-related genes and illustration of the acaricidal mechanisms of β-sitosterol.

  9. Preliminary assays for efficiency avaliation of neem oil for control of Oligonychus yothersi (Acari: Tetranychidae) /
    Ensaios preliminares para avaliação da eficiência de óleo de neem no controle de Oligonychus yothersi (Acari: Tetranychidae)

    OpenAIRE

    Renato C. Oliveira; Sandra M. J. Capelo; Amarildo Pasini

    2003-01-01

    The effect of a commercial formulation of the neem oil (azadirachtina) was evaluated in different stages of the biological cycle of the red mite of the paraguay tea Oligonychus yothersi (Acari: Tetranychidae). The formulation was shown efficient in the adults control, as well as it affected the fecundity of the females of the mite, however it didn’t inhabited oviposition, when the leaves were treated with the product.Avaliou-se o efeito de uma formulação comercial a base de neem (azadirachtin...

  10. Experimental infestation with the immatures of Amblyomma dissimile Koch, 1844 (Acari: Ixodidae on Tropidurus torquatus (Lacertilia: Iguanidae and Oryctolagus cuniculus Infestação experimental com as fases imaturas de Amblyomma dissimile Koch, 1844 (Acari: Ixodidae em Tropidurus torquatus (Lacertilia: Iguanidae e Oryctolagus cuniculus

    Directory of Open Access Journals (Sweden)

    L.H.T. Freitas

    2004-02-01

    Full Text Available Larvas provenientes de duas fêmeas de Amblyomma dissimile Koch, 1844 (Acari: Ixodidae, naturalmente ingurgitadas em uma iguana (Iguana iguana e provenientes do Estado do Mato Grosso, foram utilizadas na infestação experimental de lagartos da espécie Tropidurus torquatus e coelhos domésticos. As larvas alimentadas em ambos os hospedeiros realizaram ecdise para ninfas. As ninfas apenas ingurgitaram no lagarto e mudaram para machos e fêmeas. Este é o primeiro registro do parasitismo de larvas e ninfas de A. dissimile em T. torquatus e de larvas em coelhos.

  11. Experimental infestation with the immatures of Amblyomma dissimile Koch, 1844 (Acari: Ixodidae) on Tropidurus torquatus (Lacertilia: Iguanidae) and Oryctolagus cuniculus Infestação experimental com as fases imaturas de Amblyomma dissimile Koch, 1844 (Acari: Ixodidae) em Tropidurus torquatus (Lacertilia: Iguanidae) e Oryctolagus cuniculus

    OpenAIRE

    L.H.T. Freitas; Faccini, J. L. H.; E DAEMON; M.C.A. Prata; D.M. Barros-Battesti

    2004-01-01

    Larvas provenientes de duas fêmeas de Amblyomma dissimile Koch, 1844 (Acari: Ixodidae), naturalmente ingurgitadas em uma iguana (Iguana iguana) e provenientes do Estado do Mato Grosso, foram utilizadas na infestação experimental de lagartos da espécie Tropidurus torquatus e coelhos domésticos. As larvas alimentadas em ambos os hospedeiros realizaram ecdise para ninfas. As ninfas apenas ingurgitaram no lagarto e mudaram para machos e fêmeas. Este é o primeiro registro do parasitismo de larvas ...

  12. Seletividade de agrotóxicos usados na cultura da macieira a Neoseiulus Californicus (McGregor (Acari: Phytoseiidae1 Pesticide selectivity used in apple crops Neoseiulus californicus (McGregor (Acari: Phytoseiidae

    Directory of Open Access Journals (Sweden)

    Geraldine de Andrade Meyer

    2009-06-01

    Full Text Available Objetivou-se avaliar os efeitos secundários dos principais agrotóxicos utilizados em macieira sobre adultos e imaturos de Neoseiulus californicus (McGregor (Acari: Phytoseiidae. Os testes foram conduzidos em laboratório, utilizando as doses dos produtos recomendadas para a cultura e o método de contato e residual com pulverização em superfície de folha. Foram testados tebufenozida, fosmete, metidationa, clorpirifós, abamectina, fenpiroximato, piridabem, captana, mancozebe (duas dosagens e ditianona. Para o cálculo do efeito total (E% sobre os adultos, avaliaram-se a mortalidade, a oviposição e a viabilidade dos ovos, e para os imaturos, somente a mortalidade. Os resultados do E% foram avaliados 96 horas após a pulverização. Os produtos foram classificados quanto ao efeito total (E% de toxicidade proposta pela IOBC/WPRS. Fosmete, tebufenozida e metidationa foram inócuos; abamectina, fenpiroximato, clorpirifós, captana, mancozebe (nas duas dosagens testadas e ditianona foram levemente nocivos, e piridabem foi moderadamente nocivo aos adultos de N. californicus. O fungicida mancozebe, na maior dosagem (320g,i.a./100L, foi o que mais afetou o ácaro predador. Quanto à seletividade dos agrotóxicos aos imaturos, constatouse que abamectina e piridabem foram moderadamente nocivos, e os demais foram inócuos. Nenhum produto foi classificado como nocivo, evidenciando a tolerância de N. californicus a estes agrotóxicos. Estes resultados permitem uma escolha e manejo mais adequado para os agrotóxicos utilizados nos pomares comerciais de macieira, de forma que a presença deste ácaro predador exerça pressão de controle do ácaro-vermelho.The objective of this study was to evaluate the side effects of the main pesticides used in adult and immature Neoseiulus californicus (McGregor (Acari: Phytoseiidae. The tests were carried out in the laboratory by using the contact and residual spraying method on the leaf surface. It was tested

  13. Seletividade de produtos fitossanitários sobre o ácaro predador Agistemus brasiliensis Matioli, Ueckermann & Oliveira (Acari: Stigmaeidae Selectivity ofthe pesticides tothe predaceous mite Agistemus brasiliensis Matioli,, Ueckermann & Oliveira (Acari: Stigmaeidae

    Directory of Open Access Journals (Sweden)

    Marcos Zatti da Silva

    2009-06-01

    Full Text Available Os ácaros predadores das famílias Phytoseiidae e Stigmaeidae constituem-se nos principais inimigos naturais de Brevipalpus phoenicis (Geijskes em citros. Este ácaro-praga causa sérios prejuízos na produção, devido à transmissão do vírus da leprose dos citros (CiLV. Apesar do grande volume de informações sobre a sensibilidade de ácaros Phytoseiidae a agrotóxicos, praticamente não existem informações sobre o efeito desses compostos em ácaros Stigmaeidae no Brasil. Sendo assim, o trabalho teve por objetivo avaliar o efeito dos principais agrotóxicos utilizados em citros sobre o ácaro predador Agistemus brasiliensis Matioli, Ueckermann & Oliveira (Acari: Stigmaeidae, em condições de laboratório. Arenas de folhas de citros da variedade Pera, contendo 25 fêmeas adultas de A. brasiliensis, foram pulverizadas em torre de Potter. Avaliaram-se as mortalidades dos ácaros 72 horas após a aplicação. O efeito dos produtos na reprodução do acarino e a viabilidade dos ovos também foram avaliados. Quanto à seletividade, conforme proposta da "Organização Internacional para o Controle Biológico" (IOBC, os produtos foram classificados como: classe 1 - inócuo (E99%, calda sulfocálcica, cyhexatin, flufenoxuron, hexythiazox, óxido de fenbutatin, propargite, pyridaben e spirodiclofen. Estudos conduzidos em condições de campo ainda são necessários para se compreender melhor o efeito desses agrotóxicos sobre o ácaro predador.The predaceous mites of the families Phytoseiidae and Stigmaeidae are the most important natural enemies of Brevipalpus phoenicis (Geijskes on citrus. This mite causes serious damages to the yield due to the transmission of Citrus leprosis virus (CiLV. Despite the considerable amount of information on susceptibility of phytoseiids to pesticides, the effect of these compounds is not very known for stigmaeid mites in Brazil. This work was carried out to evaluate the effect of the main pesticides used in

  14. Ocorrência do ácaro fitófago Catarhinus tricholaenae Keifer (Acari: Diptilomiopidae em cultivares de milho Bt Occurrence of the phytophagous mite Catarhinus tricholaenae Keifer (Acari: Diptilomiopidae on Bt corn cultivars

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    Marcos Antônio Matiello Fadini

    2012-09-01

    Full Text Available O objetivo deste trabalho foi avaliar a ocorrência do microácaro-da-face-inferior-das-folhas-de-milho Catarhinus tricholaenae Keifer (Acari: Diptilomiopidae em cultivares transgênicas de milho, contendo as proteínas Cry1F e Cry 1 A(b e milho não Bt. Durante o período de junho de 2010 a janeiro de 2011, foram coletadas, quinzenalmente, cinco amostras aleatórias de quatro folhas em talhões de milho Bt, contendo a proteína Cry 1F e Cry 1 A(b, e de milho não Bt em áreas experimentais da Embrapa Milho e Sorgo, em Sete Lagoas, MG. As amostras de folhas foram vistoriadas por 15 minutos na região da nervura central, em busca de adultos de C. tricholaenae. Foram registrados 2.930 indivíduos de C. tricholaenae, sendo que 1.114 no milho Bt Cry 1F, 753 em Cry 1 A(b e 1063 indivíduos em folhas das cultivares não Bt. As maiores abundâncias populacionais médias ocorreram nos meses de novembro e dezembro. Os fatores estágio fenológico das plantas e precipitação afetaram positivamente a abundância de C. tricholaenae. A abundância média do período de coleta de C. tricholaenae foi reduzida pela cultivar de milho contendo a proteína Cry 1 A(b. Esse é o primeiro registro de ácaros sobre cultivares de milho transgênico no Brasil.The objective of this study was to evaluate the occurrence of "microácaro-da-face-inferior-das-folhas-de-milho" Catarhinus tricholaenae Keifer (Acari: Diptilomiopidae on transgenic cultivars of corn containing proteins Cry1F and Cry 1 A (b and non-Bt corn. During the period from June 2010 to January 2011 were collected, every two weeks, five random samples of four leaves in plots of Bt corn containing the protein Cry 1F and Cry 1 A (b and non-Bt corn in the experimental area of Embrapa Corn and Sorghum, Sete Lagoas, MG. The leaf samples were examined for 15 minutes in the central region of leaf in search of adult C. tricholaenae. We recorded 2930 individuals of C. tricholaenae, 1114 on Bt Cry 1F, 752 on Cry 1 A

  15. Genetic diversity and population structure of Panonychus citri (Acari: Tetranychidae), in China based on mitochondrial COI gene sequences.

    Science.gov (United States)

    Yuan, Ming-Long; Wei, Dan-Dan; Zhang, Kun; Gao, Yu-Zhen; Liu, Yong-Hua; Wang, Bao-Jun; Wang, Jin-Jun

    2010-12-01

    The citrus red mite, Panonychus citri (McGregor) (Acari: Tetranychidae), is regarded as one of the most important citrus pests in many countries, such as Japan, Spain, and China. In this study, the mitochondrial cytochrome oxidase subunit I gene was used to analyze genetic diversity and population structure of 15 P. citri populations collected from three citrus (Citrus spp.) planting regions of China. Our analysis found that these populations had relatively low genetic diversities. Bayesian tree and haplotype network showed that the 22 haplotypes of P. citri formed two lineages with low Bayesian posterior probabilities (0.55 and 0.63), and haplotypes in a sample were scattered throughout the Bayesian tree, indicating that there may be no significant genealogical structure among populations. However, when Yuxi and Danjiangkou populations (both without H7 haplotype) were excluded from the analysis, analysis of molecular variance found a weak, but significant, geographic structuring. Mantel test indicated a significant and positive correlation between genetic and geographical distances, reflecting certain degree of isolation by distance. The genetic differentiation based on pairwise F(ST) was not significant between most populations, and some F(ST) were even negative, indicating remarkable gene flow among these populations. The weak population structure of P. citri in this study was probably influenced by high gene flow between some populations due to long-distance dispersal of this species, which may be largely relied on the movement of plants between populations. The mismatch distribution analysis showed that no signal of population growth, but the Fu's F(S) value was significantly negative for total populations and the star-like shape of haplotype network, suggesting a history of population expansion of P. citri in China. PMID:21309245

  16. Laboratory evaluation of a native strain of Beauveria bassiana for controlling Dermanyssus gallinae (De Geer, 1778) (Acari: Dermanyssidae).

    Science.gov (United States)

    Immediato, Davide; Camarda, Antonio; Iatta, Roberta; Puttilli, Maria Rita; Ramos, Rafael Antonio Nascimento; Di Paola, Giancarlo; Giangaspero, Annunziata; Otranto, Domenico; Cafarchia, Claudia

    2015-09-15

    The poultry red mite, Dermanyssus gallinae (De Geer, 1778) (Acari: Dermanyssidae) is one of the most economically important ectoparasites of laying hens worldwide. Chemical control of this mite may result in environmental and food contamination, as well as the development of drug resistance. High virulence of Beauveria bassiana sensu lato strains isolated from naturally infected hosts or from their environment has been demonstrated toward many arthropod species, including ticks. However, a limited number of studies have assessed the use of B. bassiana for the control of D. gallinae s.l. and none of them have employed native strains. This study reports the pathogenicity of a native strain of B. bassiana (CD1123) against nymphs and adults of D. gallinae. Batches of nymph and adult mites (i.e., n=720 for each stage) for treated groups (TGs) were placed on paper soaked with a 0.1% tween 80 suspension of B. bassiana (CIS, 10(5), 10(7) and 10(9) conidia/ml), whilst 240 untreated control mites for each stage (CG) were exposed only to 0.1% tween 80. The mites in TG showed a higher mortality at all stages (p<0.01) when compared to CG, depending on the time of exposure and the conidial concentration. A 100% mortality rate was recorded using a CIS of 10(9) conidia/ml 12 days post infection (DPI) in adults and 14 DPI in nymphs. B. bassiana suspension containing 10(9) conidia/ml was highly virulent towards nymph and adult stages of D. gallinae, therefore representing a possible promising natural product to be used in alternative or in combination to other acaricidal compounds currently used for controlling the red mite. PMID:26206607

  17. Seasonal variation of North American form of Gigantolaelaps mattogrossensis (Acari: Laelapidae) on marsh rice rat in southern coastal Texas.

    Science.gov (United States)

    Carmichael, Joseph A; Strauss, Richard E; McIntyre, Nancy E

    2007-01-01

    The ectoparasites of a small mammal community within an intertidal zone in the upper Gulf coast region of Texas were studied to assess the seasonal variation in abundances of the mite Gigantolaelaps mattogrossensis (Fonseca) (Acari: Laelapidae) on the marsh rice rat, Oryzomys palustris (Harlan). Further study into the ecology and dynamics of this parasite-host relationship was deemed to be necessary to expand the understanding of these potential participants in the ecology of Bayou Hantavirus, an important causative agent of Hantavirus pulmonary syndrome. The objective of this study was to determine the effects of five predictor variables on mite abundance: prevalences of hosts, relative humidity, precipitation, temperature, and length of daylight. Mite abundance was modeled as a function of the five variables with analyses of variance and multiple regressions; however, because the predictor variables pertain to the sampling period rather than to the individual rodent host, the effective sample size was small and thus the sums of squares and cross products matrix was singular. We therefore developed and used a new method for estimating regression coefficients based on the "noise-addition method" (random residual variation) combined with a bootstrap step converting the reduced rank data to full rank, providing realistic estimates of confidence intervals for the regression statistics. The population abundances of mites fluctuated significantly across collecting periods. Humidity and precipitation were the most influential variables in explaining the variation in abundances of mites. Model interpretation suggests that G. mattogrossensis is a nidicolous parasite. These results provide a baseline understanding of the seasonal interactions between parasite and host. PMID:17294924

  18. Amblyomma hadanii n. sp. (Acari: Ixodidae), a tick from northwestern Argentina previously confused with Amblyomma coelebs Neumann, 1899.

    Science.gov (United States)

    Nava, Santiago; Mastropaolo, Mariano; Mangold, Atilio J; Martins, Thiago F; Venzal, José M; Guglielmone, Alberto A

    2014-07-01

    All stages of Amblyomma hadanii n. sp. (Acari: Ixodidae) are described from northwestern Argentina. The diagnostic characters for males are a combination of the pattern of scutal ornamentation, basis capituli dorsally rectangular with cornua, coxa I with two subequal spurs (the internal wider, the external longer), coxae II-III with a single spur, coxa IV with a single spur not reaching level of anus, ventral plates irregular in shape (larger and sometimes with a small incision on festoons 4, 5 and 6) and hypostome spatulate with dental formula 3/3 in 7-8 rows. The diagnostic characters for the females are a combination of scutal ornamentation, postero-lateral margins of scutum slightly convex, coxa I with two subequal spurs (the internal wider, the external longer), basis capituli dorsally rectangular, porose areas rounded, genital aperture U-shaped, and hypostome spatulate with dental formula 3/3 in 7-8 rows. Diagnosis of nymphs can be performed by a combination of basis capituli rectangular, scutum with large punctations in the lateral fields and small punctations in the central field, and cervical groove short and ending as a small shallow depression at the eye level. Larvae are diagnosed by the shape of basis capituli, scutum with with posterior margin slightly convex, and legs with coxa I with 2 triangular spur (the external longer than the internal), and with coxae II and III each with 1 triangular spur. The hosts recorded for this new tick species are Tapirus terrestris (Linnaeus), horse, cattle, dog and humans. Analyses of a 410 bp fragment of the mitochondrial 16S rRNA gene and the complete sequence of the nuclear 18S rRNA gene supported the description of A. hadanii as a new species. PMID:24935128

  19. Indoor winter fumigation with formic acid for control of Acarapis woodi (Acari: Tarsonemidae) and nosema disease, Nosema sp.

    Science.gov (United States)

    Underwood, Robyn M; Currie, Robert W

    2009-10-01

    Indoor fumigation of honey bees, Apis mellifera L., with formic acid to control varroa mites, Varroa destructor Anderson & Trueman, allows simultaneous fumigation of multiple colonies with little labor input and good efficacy. Several experiments were designed to test the efficacy of formic acid as a treatment for honey bee mites, Acarapis woodi (Rennie) (Acari: Tarsonemidae), and nosema disease, Nosema sp., indoors in winter. The objectives of this study were (1) to determine the efficacy of formic acid fumigation for honey bee mite control by using both the thoracic slice and live dissection methods and (2) to determine whether indoor fumigation can reliably prevent the buildup of nosema disease in overwintering honey bee colonies. Indoor winter fumigation of honey bee colonies with formic acid was effective in killing a high percentage of honey bee mites but did not significantly reduce the proportion of bees with infested tracheae over the duration of the experiments. Thus, the method used to determine the efficacy of the treatment affected the results. Under conditions of relatively low or decreasing levels of nosema, fumigation tended to suppress the mean abundance of nosema spores relative to the controls. In three separate fumigation experiments using a range of formic acid concentrations, there was no statistical difference between the buildup or maintenance of nosema spore mean abundance over the winter in bees from formic acid fumigated colonies compared with untreated controls. However, fumigation with formic acid during winter at a low concentration for extended periods significantly suppressed spore buildup of mixed populations of nosema (Nosema apis and Nosema ceranae) in 1 yr. PMID:19886435

  20. Seletividade de acaricidas e inseticidas a ácaros predadores (Acari: Phytoseiidae encontrados em seringueira no centro-oeste do Brasil Side-effect of acaricides and insecticides to predatory mites (Acari: Phytoseiidae found in rubber-trees in mid-west Brazil

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    Noeli Juarez Ferla

    2006-04-01

    Full Text Available Euseius concordis (Chant e Neoseiulus anonymus (Chant & Baker são ácaros predadores da família Phytoseiidae comumente encontrados em seringueira (Hevea brasiliensis Muell. Arg. em Mato Grosso, região centro-oeste do Brasil. Este trabalho foi realizado para verificar o efeito de acaricidas e inseticidas-acaricidas empregados em plantações de seringueira, e outros que teriam potencial para serem empregados contra insetos e ácaros considerados pragas dessa cultura, sobre E. concordis e N. anonymus. Utilizou-se o método residual de pulverização em superfície, recomendado como padrão pelo Grupo de Trabalho "Pesticidas e Artrópodes Benéficos", da Organização Internacional de Controle Biológico e Integrado de Plantas e Animais Nocivos/Seção Regional do Paleártico Oeste. Duas concentrações de cada um dos seguintes ingredientes ativos foram utilizadas: acefato, dicofol, endosulfan, formetanate, metomil, monocrotofós, óxido de fenbutatin e propargite. Uma das concentrações utilizadas foi uma média daquelas sugeridas pelos fabricantes para o controle de ácaros e insetos fitófagos presentes em outras culturas, uma vez que nenhum dos produtos testados tem registro para o uso em seringueira e a outra correspondeu à cerca de um terço da primeira. Endosulfan a 320ppm, dicofol a 100ppm e óxido de fenbutatin a 100 e 320ppm foram inócuos a E. concordis, enquanto que endosulfan a 320ppm e dicofol a 100ppm foram inócuos a N. anonymus. Acefato, formetanate e monocrotofós, nas concentrações testadas, foram nocivos às duas espécies.Euseius concordis (Chant and Neoseiulus anonymus (Chant & Baker are predatory mites of the family Phytoseiidae commonly found on rubber trees (Hevea brasiliensis Muell. Arg. in the State of Mato Grosso, in the mid-west Brazil. This work was conducted to verify the effect of acaricides and insecticides-acaricides occasionally used in rubber tree plantations, and other products that could be used against

  1. Plantas de ocorrência espontânea como substratos alternativos para fitoseídeos (Acari, Phytoseiidae em cultivos de seringueira Hevea brasiliensis Muell. Arg. (Euphorbiaceae Weeds as alternative substrates to phytoseiids (Acari, Phytoseiidae in rubber tree Hevea brasilienis, Muell. Arg. (Euphorbiaceae cultivation

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    Marcos Roberto Bellini

    2005-03-01

    Full Text Available O objetivo deste estudo foi determinar as espécies de plantas espontâneas em áreas de cultivo de seringueira que poderiam servir com reservatório de ácaros predadores. O trabalho foi conduzido em Olímpia, Estado de São Paulo, Brasil, em dois cultivos de seringueira. A cada três meses, cerca de 1.000 cm³ de folhas de cada uma das cinco espécies de plantas espontâneas dominantes em cada cultivo foi tomada para determinar os fitoseídeos. Como as plantas espontâneas dominantes variaram durante o estudo, um total de 20 espécies foi verificado. Somente Cecropia sp. foi dominante em todo estudo, em ambos os cultivos. Um total de 336 fitoseídeos pertencentes às seguintes espécies foi encontrado: Euseius citrifolius Denmark & Muma, 1970, E. concordis (Chant, 1959, Galendromus annectens (DeLeon, 1958, Iphiseiodes zuluagai Denmark & Muma, 1972, Neoseiulus anonymus (Chant & Baker, 1965 e N. tunus (DeLeon, 1967. E. citrifolius (189 espécimes e N. tunus (138 espécimes foram os mais abundantes. A maior abundância (231espécimes e diversidade (5 espécies foram observadas sobre Cecropia sp. Sobre esta planta foi encontrado o maior número de ácaros por amostra (29 espécimes, seguida por Piper duncum Linnaeus (22, Guarea sp. (18 e Ageratum conyzoides Linnaeus (12. E. citrifolius tem sido determinado como um dos ácaros predadores mais abundantes sobre seringueiras cultivadas na região onde este trabalho foi conduzido. Cecropia sp. parece ser uma das plantas espontâneas mais importantes consideradas como reservatório de E. citrifolius porque está continuamente presente nos cultivos. Estudos complementares poderiam indicar a viabilidade de se manejar esta planta nas áreas de cultivo de seringueira para permitir o controle biológico dos ácaros-praga desta cultura.The objective of this study was to determine weed species of rubber tree cultivation areas that could serve as reservoirs of predatory mites. The work was conducted in Ol

  2. First description of the nymph and larva of Dermacentor compactus Neumann, 1901 (Acari: Ixodidae), parasites of squirrels (Rodentia: Sciuridae) in southeast Asia.

    Science.gov (United States)

    Apanaskevich, Dmitry A

    2016-05-01

    Recent reexamination of collection lots stored in the United States National Tick Collection revealed adult specimens of Dermacentor compactus Neumann, 1901 (Acari: Ixodidae) reared from field-collected nymphs, which allowed us to associate field-collected unidentified nymphs and larvae with this species. Nymphs of D. compactus can be easily distinguished from those of other congeneric species by the shape of the scutum and spiracular plate, the hypostome dentition, and the size of the spurs on the coxae. Larvae of this species can be distinguished by the shape and sculpture of the scutum, the shape of basis capituli, the absence of auriculae, and the size of the spurs on coxae II and III. Both nymphs and larvae feed mostly on various species of squirrels (Rodentia: Sciuridae). Considerably fewer nymphs and larvae were found on murid rodents (Rodentia: Muridae), domestic dogs (Carnivora: Canidae), and a snake (Squamata: Colubridae). PMID:27095664

  3. L’apport d’exercices en voix chantée pour la correction phonétique en langue étrangère : le cas du français langue étrangère appliqué à des apprenants italiens d’âge adulte Using singing exercises as a tool for improving phonetic correction in foreign language teaching and learning: the case of French as a foreign language for native adult speakers of Italian

    Directory of Open Access Journals (Sweden)

    Nathalie Vallée

    2012-02-01

    Full Text Available Divers travaux ont établi que la musique favorise le processus acquisitionnel. En didactique des langues, le rôle positif de la chanson sur la perception des éléments prosodiques est bien connu et il a d’ailleurs été récemment montré que la reconnaissance syllabique d’une langue étrangère est facilitée par le chant. Des investigations de terrain menées en 2006 à l’Université Stendhal de Grenoble ont révélé l’efficacité de la voix chantée pour la correction phonético-phonologique du français langue étrangère. Ces résultats prometteurs ont été confirmés par une étude en laboratoire en 2008. Les apprenants formés à la phonétique du français langue étrangère avec des exercices en voix chantée, ajoutés à ceux d’une méthode traditionnelle, progressent plus rapidement que les sujets formés avec la seule méthode traditionnelle sur une durée équivalente. Suite à ces résultats préliminaires et à ceux d’une série d’expériences en cours, nous élaborons avec le soutien d’enseignants de langue, d’orthophonistes et de chanteurs, une méthode innovante pour l’enseignement/apprentissage et l’évalua-tion de la correction phonétique en langue étrangère.Music has a positive impact on learning processes. In linguistics, the positive role of music in the perception of prosodic features has been pointed out, and a recent study has shown that the segmentation of words in a foreign language is facilitated by sung sequences. A fieldwork carried out in 2006 at the Université Stendhal of Grenoble showed that singing-voice tasks could help to improve the learning of French phonology and phonetics. Those positive results were supported by a laboratory study in 2008. Learners who were taught with additional singing-voice tasks learned faster than those taught only with a standard phonetic method, for an equivalent length of time. Based on these preliminary results and those of several ongoing

  4. Ocorrência de Ornithonyssus bursa (Berlese, 1888 (Acari: Macronyssidae em filhotes de Megascops choliba (corujinha-do-mato e Pitangus sulphuratus (bem-te-vi, no Rio Grande do Sul, Brasil Ocurrence of Ornithonyssus bursa (Berlese, 1888 (Acari: Macronyssidae on Megascops choliba (tropical screech-owl and Pitangus sulphuratus (great kiskadee nestlings in the Rio Grande do Sul State, Brazil

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    Carolina S. Mascarenhas

    2009-12-01

    Full Text Available O Núcleo de Reabilitação da Fauna Silvestre e Centro de Triagem de Animais Silvestres da Universidade Federal de Pelotas - RS atendeu dois filhotes de Megascops choliba (corujinha-do-mato (Strigiformes - Strigidae e dois de Pitangus sulphuratus (bem-te-vi (Passeriformes - Tyrannidae intensamente parasitados por ácaros, em maio de 2005 e dezembro de 2006, respectivamente. Os filhotes e o ninho de P. sulphuratus foram recolhidos na zona urbana da cidade de Pelotas - RS após forte temporal. Os ácaros foram removidos, colocados em álcool 70% e levados ao laboratório de parasitologia para identificação. Os espécimes foram clarificados em lactofenol, montados em meio de Hoyer e identificados como Ornithonyssus bursa (Acari - Macronyssidae. Registra-se Megascops choliba e Pitangus sulphuratus como hospedeiros de Ornithonyssus bursa, no Rio Grande do Sul, Brasil.The Center for Rehabilitation of Wildlife and Center for Selection of Wild Animal of the Federal University of Pelotas has attended two nestlings of Megascops choliba (tropical screech-owl (Strigiformes - Strigidae and two of Pitangus sulphuratus (great kiskadee (Passeriformes - Tyrannidae heavily parasitized by mites, in May 2005 and December 2006, respectively. The nestlings and the nest of P. sulphuratus were collected in the Pelotas urban area after severe storms. The mites were removed, clarified in lactofenol, permanently mounted in Hoyer's medium and identified as Ornithonyssus bursa (Acari - Macronyssidae. Megascops choliba and Pitangus sulphuratus are reported as host of Ornithonyssus bursa in Rio Grande do Sul State, Brazil.

  5. Biologia e flutuação populacional de Mononychellus Planki (Mc Gregor) (Acari: Tetranychidae) em cultivares de soja Glycine Max (L.) Merr. e impacto do imidacloprido em aspectos biológicos do adulto.

    OpenAIRE

    Siqueira, Fabio

    2012-01-01

    Resumo: Visando buscar cultivares de soja Glycine max (L.) Merr. com fatores de resistência ao ácaro verde Mononychellus planki (McGregor) (Acari: Tetranychidae) foram realizados estudos sobre a biologia em laboratório, flutuação populacional em diferentes cultivares durante duas safras e possíveis ações de agrotóxicos no crescimento populacional. Inicialmente foram realizados estudos de biologia de imaturos em dez cultivares BRS 133, BRS 134, BRS 282, BRS 284, BRS 245 RR, BMX Titan RR, IAC 1...

  6. Gestión Integrada de la araña roja Tetranychus urticae Koch (Acari: Tetranychidae): optimización de su control biológico en clementinos

    OpenAIRE

    Sá Argolo, Poliane

    2012-01-01

    La araña roja, Tetranychus urticae Koch (Acari: Tetranychidae) es una de las plagas más perjudiciales que afectan los huertos de clementinos en España. En los clementinos, T. urticae habita en el envés de las hojas, donde produce tela y colonias densas. Absorbe el contenido de las células, causando manchas cloróticas en el lado superior de las hojas. Al final del ernao T. urticae puede provocar en los frutos icatrices características y en consecuencia, pérdida de su valor comercial. Hasta la ...

  7. INDE. Le chant du Mohini Attam, danse classique du Kerala

    OpenAIRE

    Contri, Fabrice

    2014-01-01

    Voici un objet fort précieux, dans le meilleur sens du terme, comme ces guirlandes de joyaux dont sont ornées, en Inde, les divinités que ne cesse de célébrer le Mōhiniyāṭṭam ou « danse de l’Enchanteresse ». La dévotion avec tout l’élan de l’être – l’intellect, l’esprit, sans omettre le corps –, c’est bien un aspect essentiel de cette forme d’expression, ô combien subtile ; c’est également ce qui anime, avec ferveur, la danse et la musique indiennes. Ce nouveau Cd, de la très belle collection...

  8. The Ifugao Alim: Chanted Narrated Dramatic Discourse in Ritual

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    Rosario Bona de Santos

    2013-06-01

    Full Text Available This paper, by way of introducing the little-known Ifugao alim, gives the readers an idea of what has been written about it by Ifugao and non-Ifugao writers and scholars, and recounts my own discovery and study of it. It will focus on the Piwong alim, which was the topic of my dissertation (Rosario de Santos del Rosario 2003, and which I recorded during a live performance in 1975 in Piwong, Hingyon, during the ritual called hongan di tagu—a prestige ritual of the kadangyan, for the welfare of a sick woman. In particular, the paper discusses the Piwong alim’s significance, structure, content and voice, and presents illustrations, through excerpts, which give the reader an insight into its ideological direction and unique aesthetics. The Piwong alim uses a mix of ritual genres, external and internal narration and dramatic character dialogues and monologues.The alim has been considered, by varied Ifugaos, as the crown jewel of its elaborate ritual; a sociological charter; and a magical myth that brings wellbeing.

  9. Namuyi Tibetan Songs, Engagement Chants, and Flute Music

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    Libu Lakhi

    2010-03-01

    Full Text Available The Namuyi are one of several scattered groups of people, officially classified by the Chinese government as Zang 藏 (ethnic Tibetans, who live mostly in southern Sichuan 四川 but also in a few places in the north of the province. Certain of these Qiangic-speaking peoples were once referred to in historical documents as 'Xifan' 西番 (Western Barbarians (Harrell 2001:69. Strongly influenced by other local cultures, cultural and linguistic connections between these groups and the larger Tibetan communities to the north and west vary in degree. The Namuyi who figure in this study live in the vicinity of Xichang City 西昌市, the capital of the Da Liangshan Yi Nationality Autonomous Prefecture 大凉 山彝族自治州 where the dominant ethnic groups are the Han 汉 Chinese and a major subgroup of the Yi ethnic group, the Nuosu 诺苏. The Namuyi maintain a sense of distinct ethnic identity within their compact communities, though many individuals are conversant in the languages and customs of their neighbors. Among the features that distinguish the Namuyi are language, ritual traditions, foodways, aspects of material culture, and traditions of oral performance. The present study is a straightforward, pragmatic attempt to document the particulars of song and musical traditions comprising the local 'performance-scape'. The primary researcher, Libu Lakhi, is a native of the community who was trained in a specialized mode of auto-ethnography developed by Charles Kevin Stuart and Gerald Roche at Qinghai Normal University 青海师范大学, Xining City 西宁市, Qinghai Province 青海省. Drawing on ethnomusicology, socio-linguistics, and the 'performance' school of folkloristics, the model is intended to enable local peoples to document and display their own traditions in a form available to scholars and interested persons on a global scale. This efficient system can be effectively utilized in the sort of small-scale formats familiar to folklorists and... Mark Bender (The Ohio State University

  10. Stamping, Clapping and Chanting: An Ancient Learning Pathway?

    OpenAIRE

    Marion M. Long

    2006-01-01

    In this review I explore the effect of temporal integration as a means of improving learning in schoolchildren. I focus first on theorists that have linked physical activity with a positive effect on children’s learning and second to psychological studies that have established the existence of innate temporal patterns. These findings are related to a model of temporal integration that I have developed from Croce’s writings on aesthetics (1900). From philosophy to neurology, I discuss recent n...

  11. Lavq khoer mr 'inner ceremony' chanted by Pirma Gavqlavq

    OpenAIRE

    Terrell, Jacob A.

    2013-01-01

    Documentation of Archaic Akha, the register of the Akha shaman / Jacob A. Terrell.This is a sample of collection of recordings, videos, and texts related to Akha Zanr, the indigenous religion of the Akha (ahk) of northern Mainland Southeast Asia. It includes over ten hours of .wav recordings of Pirma Gavq, an Akha Shaman, reciting the religious text ?Buffalo Knowledge One?. This amounts 6,500 verses of religious prose; all have been transcribed using the Akha orthography, and around seventy p...

  12. Repellency of oils of lemon eucalyptus, geranium, and lavender and the mosquito repellent MyggA natural to Ixodes ricinus (Acari: Ixodidae) in the laboratory and field.

    Science.gov (United States)

    Jaenson, Thomas G T; Garboui, Samira; Palsson, Katinka

    2006-07-01

    MyggA Natural (Bioglan, Lund, Sweden) is a commercially available repellent against blood-feeding arthropods. It contains 30% of lemon-scented eucalyptus, Corymbia citriodora (Hook.) K. D. Hill & L. A. S. Johnson (Myrtaceae), oil with a minimum of 50% p-menthane-3,8-diol. MyggA Natural also contains small amounts of the essential oils of lavender, Lavandula angustifolia Mill. (Lamiaceae), and geranium, Pelargonium graveolens L'Her. (Geraniaceae). In laboratory bioassays, MyggA Natural and C. citriodora oil exhibited 100% repellency against host-seeking nymphs of Ixodes ricinus (L.) (Acari: Ixodidae). Lavender oil and geranium oil, when diluted to 1% in 1,2-propanediol, had weak repellent activities on I. ricinus nymphs, but when diluted to 30% in 1,2-propanediol had 100% repellencies. 1,2-Propanediol (100%) had no significant repellent activity in comparison with that of the control. In field tests in tick-infested areas in central Sweden, tick repellency of MyggA Natural and C. citriodora oil was tested by the blanket-dragging technique for 4 d during a 6-d period. The repellencies (74 and 85%, respectively) on day 1 are similar (89%) to that of blankets treated in a similar manner with 19% diethyl-methyl-benzamide, based on previous work. Repellencies declined significantly from day 1 to day 6 (74 to 45% for MyggA Natural; 85 to 42% for C. citriodora oil). PMID:16892632

  13. Acaricidal properties of vetiver essential oil from Chrysopogon zizanioides (Poaceae) against the tick species Amblyomma cajennense and Rhipicephalus (Boophilus) microplus (Acari: Ixodidae).

    Science.gov (United States)

    Campos, Roseane Nunes de Santana; Nascimento Lima, Cecília Beatriz; Passos Oliveira, Alexandre; Albano Araújo, Ana Paula; Fitzgerald Blank, Arie; Barreto Alves, Péricles; Nascimento Lima, Rafaely; Albano Araújo, Vinícius; Santana, Alisson Silva; Bacci, Leandro

    2015-09-15

    Ticks are arthropods widely distributed in tropical and subtropical regions, which can transmit infectious agents also responsible for zoonoses. Excessive use of conventional acaricides has resulted in the onset of drug resistance by these parasites, thus the need to use alternative methods for their control. This study evaluated the acaricidal activities of Chrysopogon zizanioides (vetiver) essential oils containing different zizanoic and khuzimol (high and low acidity) acid concentrations on Amblyomma cajennense and Rhipicephalus microplus (Acari: Ixodidae). To this aims, toxicity tests of different concentrations of examined essential oils were conducted on adult females and larval stages. Results showed that the essential oils of C. zizanioides with high and low acidity reduced oviposition of females, eggs hatch and larval survival, being more effective than some commercial products widely used to control these ectoparasites. These results indicate that the C. zizanoides essential oils are promising candidates as acaricidal agents and represent also an add value to vetiver oil with high acidity, which is commercially undervalued in the cosmetic industry. PMID:26359641

  14. Population structure and dynamics of the cassava green mite Mononychellus tanajoa (Bondar and the predator Euseius ho (DeLeon (Acari: Tetranychidae, Phytoseiidae

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    Evila C. Costa

    2012-06-01

    Full Text Available Population structure and dynamics of the cassava green mite Mononychellus tanajoa and the predator Euseius ho (Acari: Tetranychidae, Phytoseiidae. Cassava is attacked by several pests, among which the cassava green mite Mononychellus tanajoa. Predatory mites of the family Phytoseiidae are major natural enemies of pestmites and are naturally found inhabiting cassava plants in the field. We evaluated the temporal variation of the developmental stages of M. tanajoa and the most abundant predatory mite in cassava fields in the study region, the phytoseiid Euseius ho. Densities of all developmental stages of M. tanajoa were low during the rainy season, increasing over the cultivation cycle of cassava and peaking in the dry season. Overall, the larval stage of M. tanajoa presented the lowest densities throughout time. Densities of all developmental stages of E. ho were low and remained constant throughout the cultivation cycle of cassava. The number of eggs, nymphs and adults of M. tanajoa was higher in comparison to the larval stage whereas there were no differences in densities of the stages of E. ho. Densities of all developmental stages of M. tanajoa were negatively correlated with precipitation. Densities of the stages of egg, nymph and adult of M. tanajoa were positively related while the stage of larva was negatively related to temperature. We conclude that it is important to consider the population structure in studies of population dynamics of arthropods as each developmental stage experiences and responds uniquely to the local environment over time.

  15. Acaricidal activity of Annonaceae fractions against Tetranychus tumidus and Tetranychus urticae (Acari: Tetranychidae and the metabolite profile of Duguetia lanceolata (Annonaceae using GC-MS

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    Dejane Santos Alves

    2015-12-01

    Full Text Available Species of the Tetranychus genus feed on plant tissues, which reduces the rate of photosynthesis and can lead to the death of plant tissues. As a result, considerable production losses are caused by these arthropods. Thus, in order to aid in the development of new products for the control of Tetranychus tumidus Banks and Tetranychus urticae Koch (Acari: Tetranychidae, the initial objective of this study was to select Annonaceae derived fractions that were soluble in dichloromethane and have acaricidal activity. Then, an exploratory analysis of the metabolite profile of the most successful fraction was performed by gas chromatography-mass spectrometry (GC-MS. Among the dichloromethane soluble fractions derived from Annona cacans Warm., Annona coriacea Mart., Annona neolaurifolia H. Rainer, Annona sylvatica A.St.-Hil., Duguetia lanceolata A.St.-Hil., Guatteria australis A.St.-Hil., Xylopia brasiliensis Spreng., Xylopia emarginata Mart. and Xylopia sericea A.St.-Hil., only the fraction from D. lanceolata stem bark reduced the survival of T. tumidus females. However, ovicidal activity was not detected when D. lanceolata stem bark was evaluated against T. tumidus eggs. Further, we studied the effect of dichloromethane soluble fractions from D. lanceolata leaves, berry fruits and stem bark on T. urticae, and the stem bark was found to be the most active fraction against T. urticae. The metabolite profile analysis of D. lanceolata stem bark by GC-MS, suggested that the main constituents were 2,4,5-trimethoxystyrene and trans-asarone.

  16. First Record of Amblyomma ovale (Koch, 1844 (Acari: Ixodidae parasitizing Lontra longicaudis (Olfers, 1818 (Carnivora: Mustelidae in Santa Catarina Island, Florianópolis, Sc, Brazil

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    Bibiana Verdin De Andrade

    2015-04-01

    Full Text Available Three female and one male Amblyomma ovale (Acari: Ixodidae were found parasitizing a neotropical otter (Lontra longicaudis (Carnivora: Mustelidae in Florianópolis, SC, Brazil. This is the first record of the occurrence of A. ovale in Santa Catarina Island and the second report of this ectoparasite in a mustelid species in Brazil. A. ovale has been reported in wild carnivores in several Brazilian states and is considered one of the main predominant species of the Atlantic rainforest. The Amblyomma ticks are primarily responsible for the spread of BSF in humans. Among the species of Amblyomma infesting dogs is the A. ovale and the proximity between man and the dog favors the parasite sharing. Santa Catarina Island has many rural and wild environments shared by domestic animals, especially dogs, such as the environment where the otter was found in this study. Proper determination of tick species and their distribution in different geographical regions is essential for the understanding of the epidemiology of Rickettsiosis.

  17. Toxicidade diferencial de produtos à base de abamectina ao ácaro Brevipalpus phoenicis (Geijskes, 1939 (Acari: Tenuipalpidae em citros Differential toxicity of abamectin based products over Brevipalpus phoenicis (Geijskes, 1939 (Acari: Tenuipalpidae mite in citrus

    Directory of Open Access Journals (Sweden)

    Daniel Júnior de Andrade

    2010-03-01

    Full Text Available O ácaro Brevipalpus phoenicis é uma das principais pragas dos citros por ser vetor do "Citrus Leprosis Virus" (CiLV, agente causal da leprose, uma das mais graves doenças da citricultura. Objetivou-se avaliar o efeito tóxico de produtos à base de abamectina sobre o ácaro B. phoenicis. Foram realizados um experimento de ação direta e três de ação residual no Laboratório de Acarologia do Departamento de Proteção de Plantas (Fitossanidade da FCAV - UNESP, Jaboticabal-SP. O delineamento adotado nos bioensaios foi o inteiramente casualizado, onde 10 tratamentos foram repetidos 7 vezes, sendo cada repetição composta por um fruto de laranja. Os tratamentos estudados (mL p.c./100 L de água foram: Acaramik a 20; 30; 40 e 50 mL; Vertimec a 30 e 40 mL; Abamectin Nortox a 30 e 40 mL; Tricofol a 77 mL e uma testemunha sem aplicação. Utilizaram-se frutos com presença de verrugose, que foram lavados e parcialmente parafinados, deixando-se uma área sem parafina, que foi circundada com cola entomológica para contenção dos ácaros. Transferiram-se 20 ácaros adultos B. phoenicis para cada fruto. No bioensaio de ação direta, a transferência foi realizada antes das aplicações e, nos bioensaios de ação residual, aos 5; 10 e 15 dias após a aplicação dos produtos. A aplicação dos produtos sobre os frutos foi realizada em Torre de Potter. Os resultados obtidos nos bioensaios evidenciaram que os melhores tratamentos foram: Tricofol a 77 mL, Acaramik a 40 e 50 mL e Vertimec a 40 mL. De forma geral, os produtos testados podem ser utilizados no controle do ácaro B. phoenicis.The mite Brevipalpus phoenicis (Geijskes, 1939 (Acari: Tenuipalpidae is one of the most important pests in Brazil citrus plantation, because it is the virus "Citrus Leprosis Virus" (CiLV vector, one of the most serious citrus plantation diseases. The purpose of this experiment was to evaluate the toxical effect of abamectin in the mite B. phoenicis. It was performed

  18. A sustained release gel formulation of doramectin for control of lone star ticks (Acari: Ixodidae) and horn flies (Diptera: Muscidae) on cattle.

    Science.gov (United States)

    Lohmeyer, K H; Miller, J A; Pound, J M; Klavons, J A

    2009-04-01

    A gel formulation formed by incorporating technical doramectin into a 10% hydroxypropyl methylcellulose aqueous solution was used to subcutaneously inject steers at varying dosages. Doramectin serum concentration of steers receiving 600 microg (AI)/kg body weight declined from 21.9 ppb at 0.5 wk to below detectable at 8 wk postinjection. The 1,200 microg (AI)/kg injection resulted in serum concentrations of 29.1 ppb at 0.5 wk and declined to 0.5 ppb at 8 wk postinjection. Both the 600 and 1,200 microg (AI)/kg injections provided 100% inhibition of index of fecundity (IF) in adult lone star ticks, Amblyomma americanum L. (Acari: Ixodidae) through week 8, after which inhibition declined to 79.4 and 45.3%, respectively, during the 12th week posttreatment. For steers treated at 600 microg (AI)/kg, mortality of adult horn flies, Hematobia irritans L. (Diptera: Muscidae), declined from 16.9% during week 2 to 3.1% during week 7 postinjection. The blood from steers treated at 1,200 microg (AI)/kg resulted in a similar decline in mortality of blood fed adult horn flies from 29.4% during week 1 to 4.0% during week 7. The 600 microg (AI)/kg treatment provided complete control of larval horn flies in the manure for 9 wk, whereas the 1,200 microg (AI)/kg injection gave complete control for 14 wk posttreatment. The doramectin gel formulation provided long-lasting delivery of doramectin to cattle and extended control of lone star ticks and larval horn flies. Such a simple and inexpensive formulation could be useful in tick eradication programs by reducing the frequency of gathering cattle. PMID:19449664

  19. Suppression of host-seeking Ixodes scapularis and Amblyomma americanum (Acari: Ixodidae) nymphs after dual applications of plant-derived acaricides in New Jersey.

    Science.gov (United States)

    Jordan, Robert A; Dolan, Marc C; Piesman, Joseph; Schulze, Terry L

    2011-04-01

    We evaluated the ability of dual applications of natural, plant-derived acaricides to suppress nymphal Ixodes scapularis Say and Amblyomma americanum (L.) (Acari: Ixodidae) in a Lyme disease endemic area of New Jersey. An aqueous formulation of 2% nootkatone provided >90% control of I. scapularis through 7 d. Control declined to 80.9% at 14 d, and a second application was made that provided >95% control through the remaining 4 wk of the nymphal season. Nootkatone provided >90% control of A. americanum through 35 d postapplication. Applications of 2% carvacrol and EcoTrol T&O resulted in rapid knockdown of both tick species, but control declined significantly to 76.7 and 73.7%, respectively, after 14 d when a second application was made that extended control of both tick species to between 86.2 and 94.8% at 21 d. Subsequently, control declined steadily in all plots by 42 d postapplication except for I. scapularis in carvacrol-treated plots, where levels of control >90% were observed through 35 d. Of the three compounds tested, 2% nootkatone provided the most consistent results, with 96.5 and 91.9% control of I. scapularis and A. americanum through 42 and 35 d, respectively. The ability of plant-derived natural products to quickly suppress and maintain significant control of populations of these medically important ticks may represent a future alternative to the use of conventional synthetic acaricides. In addition, the demonstrated efficacy of properly-timed backpack sprayer application may enable homeowner access to these minimal-risk acaricides. PMID:21510219

  20. A review of the ticks (Acari, Ixodida of Brazil, their hosts and geographic distribution - 1. The State of Rio Grande do Sul, Southern Brazil

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    Evans DE

    2000-01-01

    Full Text Available A review of the ticks (Acari, Ixodida of the State of Rio Grande do Sul, southern Brazil, was completed as a step towards a definitive list (currently indicated as 12 of such species, their hosts and distribution. The ticks: Argas miniatus (poultry, Ixodes loricatus (opossums, Amblyomma aureolatum (dogs, A. calcaratum (anteaters, A. cooperi (capybaras, A. nodosum (anteaters, A. tigrinum (dogs (Neotropical and Rhipicephalus sanguineus (dogs (introduced, cosmopolitan, Afrotropical were confirmed as present, in addition to the predominant, Boophilus microplus (cattle (introduced, pan-tropical, Oriental. Of the further 18 species thus far reported in the literature as present in the state, but unavailable for examination: only Ornithodoros brasiliensis (humans and their habitations (Neotropical, Ixodes affinis (deer (Nearctic/Neotropical and I. auritulus (birds (Nearctic/Neotropical/Afrotropical/ Australasian are considered likely; 13 species would benefit from corroborative local data but the majority appear unlikely; reports of A. maculatum (Nearctic/Neotropical, but circum-Caribbean are considered erroneous; the validity of A. fuscum is in doubt. The very recent, first known report of the tropical Anocentor nitens (horses(Nearctic/Neotropical, but still apparent absence of the tropical A. cajennense (catholic (Nearctic/Neotropical and the sub-tropical/temperate Ixodes pararicinus (cattle (Neotropical in Rio Grande do Sul are important for considerations on their current biogeographical distribution and its dynamics in South America. The state has relatively long established, introduced ("exotic", Old World tick species (B. microplus, R. sanguineus that continue to represent significant pests and disease vectors to their traditional, introduced domestic animal hosts, cattle and urban dogs. There are also indigenous, New World ticks (A. miniatus, O. brasiliensis, A. aureolatum, A. nitens, as both long established and possibly newly locally

  1. Sampling method evaluation and empirical model fitting for count data to estimate densities of Oligonychus perseae (Acari: Tetranychidae) on 'Hass' avocado leaves in southern California.

    Science.gov (United States)

    Lara, Jesús R; Saremi, Naseem T; Castillo, Martin J; Hoddle, Mark S

    2016-04-01

    Oligonychus perseae (Acari: Tetranychidae) is an important foliar spider mite pest of 'Hass' avocados in several commercial production areas of the world. In California (USA), O. perseae densities in orchards can exceed more than 100 mites per leaf and this makes enumerative counting prohibitive for field sampling. In this study, partial enumerative mite counts along half a vein on an avocado leaf, an industry recommended practice known as the "half-vein method", was evaluated for accuracy using four data sets with a combined total of more than 485,913 motile O. perseae counted on 3849 leaves. Sampling simulations indicated that the half-vein method underestimated mite densities in a range of 15-60 %. This problem may adversely affect management of this pest in orchards and potentially compromise the results of field research requiring accurate mite density estimation. To address this limitation, four negative binomial regression models were fit to count data in an attempt to rescue the half-vein method for estimating mite densities. These models were incorporated into sampling plans and evaluated for their ability to estimate mite densities on whole leaves within 30-tree blocks of avocados. Model 3, a revised version of the original half-vein model, showed improvement in providing reliable estimates of O. perseae densities for making assessments of general leaf infestation densities across orchards in southern California. The implications of these results for customizing the revised half-vein method as a potential field sampling tool and for experimental research in avocado production in California are discussed. PMID:26861068

  2. Controle de Brevipalpus phoenicis (Geijskes, 1939 E Oligonychus ilicis (McGregor, 1917 (Acari: Tenuipalpidae, Tetranychidae em cafeeiro e o impacto sobre ácaros benéficos: I - abamectin e emamectin Control of Brevipalpus phoenicis (Geijskes, 1939 and Oligonychus ilicis (McGregor, 1917 (Acari: Tenuipalpidae, Tetranychidae in coffee plants and the impact on beneficial mites: I - Abamectin and emamectin

    Directory of Open Access Journals (Sweden)

    Paulo Rebelles Reis

    2004-04-01

    Full Text Available O ácaro Brevipalpus phoenicis (Geijskes, 1939 (Acari: Tenuipalpidae é importante em cafeeiro (Coffea spp., por ser o vetor do vírus da mancha-anular, responsável por queda de folhas e má qualidade da bebida do café, e o ácaro-vermelho, Oligonychus ilicis (McGregor, 1917 (Acari: Tetranychidae, por reduzir a área foliar de fotossíntese. Alguns ácaros da família Phytoseiidae são eficientes predadores associados aos ácaros-praga. Com este trabalho teve-se como objetivo estudar o controle dos ácaros-praga e o impacto do abamectin e emamectin sobre fitoseídeos. Em laboratório, foram estudados os efeitos ovicida, tópico, residual, tópico mais residual aos ácaros-praga e a seletividade fisiológica aos fitoseídeos. Em semicampo, foi estudada a persistência dos produtos no controle dos ácaros-praga. O efeito ovicida foi avaliado em ovos no início e fim de incubação; os efeitos residual, tópico e tópico mais residual foram avaliados pela mortalidade de larvas, ninfas e adultos após 48 horas da aplicação, enquanto a persistência foi avaliada pela mortalidade até 30 dias após a pulverização. A seletividade aos ácaros fitoseídeos foi avaliada pelo efeito total às fêmeas adultas, em teste residual em superfície de vidro. Pelos resultados, verificou-se que abamectin e emamectin não possuem ação ovicida, para ambas as espécies de ácaros-praga estudadas. Considerando o efeito tópico mais residual, o abamectin e emamectin foram altamente eficientes no controle de larvas, ninfas e adultos de B. phoenicis; apenas abamectin foi eficiente no controle de O. ilicis. Abamectin foi levemente a moderadamente nocivo e emamectin mostrou-se inócuo a levemente nocivo aos fitoseídeos. Devido à eficiência de controle e seletividade a fitoseídeos, conclui-se que abamectin e emamectin podem ser utilizados em programas de manejo integrado do ácaro B. phoenicis, e abamectin para o manejo de B. phoenicis e O. ilicis em cafeeiro

  3. Biology of three species of Agistemus (Acari: Stigmaeidae): life table parameters using eggs of Panonychus citri or pollen of Malephora crocea as food.

    Science.gov (United States)

    Goldarazena, Arturo; Aguilar, Hugo; Kutuk, Halil; Childers, Carl C

    2004-01-01

    The biology and life table parameters of Agistemus industani Gonzalez, A. cyprius Gonzalez, and A. floridanus Gonzalez (Acari: Stigmaeidae) were studied under laboratory conditions using two food sources: Panonychus citri (McGregor) eggs or ice plant, Malephora crocea (Jacquin) Schwantes pollen at 25 degrees C. The larval, protonymph, deutonymph, and adult stages of A. industani fed on citrus red mite eggs. All active stages of A. industani, except the larva, fed on all P. citri stages and the larval stage could not feed on P. citri adults. All immature stages of A. industani fed on M. crocea pollen. Agistemus cyprius larvae fed on P. citri eggs and larvae or ice plant pollen. The nymphal stages fed on P. citri eggs, larvae, and protonymphs but not deutonymphs or adults while A. cyprius deutonymphs and adults fed on all P. citri stages. Adult and nymphal stages of A. cyprius fed on ice plant pollen and successfully completed their development while A. floridanus did not. Agistemus floridanus larvae fed only on P. citri eggs, while the other stages fed on P. citri eggs, larvae, and protonymphs. The developmental times from egg to adult for A. industani and A. cyprius when fed M. crocea pollen were 11.3 and 13.4 days, respectively. Agistemus floridanus was unable to complete its life cycle on a diet of only M. crocea pollen. Agistemus industani, A. cyprius, and A. floridanus completed development from egg to adult in 11.7, 13.8, and 10.8 days, respectively, when fed P. citri eggs. The intrinsic rate of increase (r(m)) values for A. cyprius and A. industani were 0.0311 and 0.1201 per day on the pollen diet. The net reproductive rate (Ro) was 3.58 for A. cyprius and 10.07 for A. industani with generation times (T) of 45.2 and 35.1 days, respectively, on the ice plant pollen diet. The r(m) values for A. cyprius, A. floridanus, and A. industani on the P. citri egg only diet were: 0.0562, 0.1001, and 0.1031 per day, respectively. The Ro values for each species fed P

  4. Potential of two populations of Amblyseius swirskii (Acari: Phytoseiidae) for the control of Bemisia tabaci biotype B (Hemiptera: Aleyrodidae) in Brazil.

    Science.gov (United States)

    Cavalcante, Ana Cristina Cerqueira; Borges, Lucas Rosa; Lourenção, André Luiz; de Moraes, Gilberto José

    2015-12-01

    Predatory mites of the family Phytoseiidae are commercialized in European and North American countries for the control of whiteflies (Insecta: Aleyrodidae). Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) is one of the predators used for that purpose. This predator is not found in Brazil and in many other countries, but its introduction could promote biological control of Bemisia tabaci (Gennadius) biotype B (silverleaf whitefly) in those countries. The aim of this study was to compare two populations of A. swirskii as predators of eggs of B. tabaci of two different ages, as well as the acceptance of those populations for other food types [eggs of Tetranychus urticae Koch; larvae and protonymphs of Aleuroglyphus ovatus (Troupeau) (Astigmatina: Acaridae) and cattail pollen (Typha domingensis Persoon)]. One of the populations of A. swirskii was collected in the Republic of Benin, in tropical Africa, and the other was commercially available in The Netherlands. The comparison was done to evaluate the population with better potential for practical use, and to determine food types that could be used for mass rearing the predator. Experiments were conducted at 28 ± 1 °C, 80 ± 10 % relative humidity and 12 h photophase. Both populations were able to oviposit when fed eggs of B. tabaci, but the Netherlands population showed higher oviposition rate (2.3 and 1.6 times higher on young and older eggs, respectively). Higher predation rates were observed for eggs up to 24 h of age in comparison with older eggs. Aleuroglyphus ovatus proved to be a promising prey for possible mass rearing of this predator in Brazil, where that astigmatic mite is found naturally when pollen was used as food, no significant difference was observed for oviposition rate between populations. The results suggested a higher potential of the Netherlands population of A. swirskii for the control of B. tabaci biotype B in this country for augmentative biological control, with the possible use of

  5. Eupalopsellidae and Stigmaeidae (Acari: Prostigmata) within citrus orchards in Florida: species distribution, relative and seasonal abundance within trees, associated vines, and ground cover plants.

    Science.gov (United States)

    Childers, Carl C; Ueckermann, Eduard A

    2014-10-01

    Seven citrus orchards on reduced- to no-pesticide spray programs were sampled for predacious mites in the families Eupalopsellidae and Stigmaeidae (Acari: Prostigmata) in central and south central Florida. Inner and outer canopy leaves, fruit, twigs, and trunk scrapings were sampled monthly between August 1994 and January 1996. Open flowers were sampled in March from five of the sites. Two species of eupalopsellid mites (Exothorhis caudata Summers and Saniosulus harteni (van-Dis and Ueckermann)) were identified from 252 specimens collected within citrus tree canopies within the seven citrus orchards of which 249 were E. caudata. Only two E. caudata were collected from ground cover plants within five of the seven orchards. Eight species of Stigmaeidae were identified from 5,637 specimens: Agistemus floridanus Gonzalez, A. terminalis Gonzalez, Eustigmaeus arcuata (Chandhri), E. sp. near arcuata, E. segnis (Koch), Mediostigmaeus citri (Rakha and McCoy), Stigmaeus seminudus Wood, and Zetzellia languida Gonzalez were collected from within citrus tree canopies from seven orchard sites. Agistemus floridanus was the only species in either family that was abundant with 5,483 collected from within citrus tree canopies compared with only 39 from vine or ground cover plants. A total of 431 samples from one or more of 82 vines and ground cover plants were sampled monthly between September 1994 and January 1996 in five of these orchards and one or more eupalopsellids or stigmaeids were collected from 19 of these plants. Richardia brasiliensis (Meg.) Gomez had nine A. floridanus from 5 of 25 samples collected from this plant. Solanum sp. had five A. floridanus from three samples taken. Both eupalopsellid and stigmaeid species numbers represented orchards were on full herbicide programs and ground cover plants were absent. Agistemus floridanus was more abundant in the citrus orchards with on-going or recent herbicide programs compared with orchards having well-developed ground

  6. Seleções para resistência e suscetibilidade, detecção e monitoramento da resistência de Tetranychus urticae ao acaricida clorfenapir Selections for resistance and susceptibility, detection and monitoring of resistance to the acaricide chlorfenapyr in Tetranychus urticae koch (Acari: Tetranychidae)

    OpenAIRE

    Mário Eidi Sato; Marcos Zatti da Silva; Katia Gigliola Cangani; Adalton Raga

    2007-01-01

    Problemas com resistência de ácaro-rajado, Tetranychus urticae Koch (Acari: Tetranychidae), a acaricidas têm sido registrados em diversos países, inclusive no Brasil. O estudo teve como objetivo caracterizar a resistência de T. urticae ao acaricida clorfenapir e avaliar a freqüência de resistência a esse composto em áreas comerciais de seis culturas no Estado de São Paulo. Seleções para resistência e suscetibilidade a clorfenapir foram realizadas em laboratório, utilizando-se uma população de...

  7. Ticks (Acari: Ixodida: Argasidae, Ixodidae infesting humans in Northwestern Córdoba province, Argentina Garrapatas infestando humanos en el noroeste de la provincia de Córdoba, Argentina

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    Nava Santiago

    2006-06-01

    Full Text Available Ticks infesting humans were collected from September 2004 to August 2005 in Northwestern Córdoba in an area with a southern limit in the locality of Dean Funes (30°25´S 64°20´W and San José de las Salinas (30°00´S 64°37´W in the North. The collections consisted in ticks found attached on man obtained from three sources: 1 specimens fixed on two workers during two successive days per month of field work in the northern part of the area which belongs to Western Chaco district of the phytogeographical Chaco domain, 2 ticks attached to a man working in a farm close to Dean Funes in the Chaco Serrano district of the Chaco domain and, 3 ticks collected from a collaborator visiting daily a suburban property with dogsin the vicinities of Dean Funes. Most ticks collected were larvae, nymphs and adults of Amblyomma neumanni from the Chaco Serrano district where a nymph of Otobius megnini was also found on man. Adults of Amblyomma parvum and Amblyomma tigrinum were detected feeding on humans in the Western Chaco district and in the property close to Dean Funes, respectively. Amblyomma neumanni was absent on man from December to April while most specimens of A. parvum and A. tigrinum were collected during summer. Their role as potential vector of ticktransmitted diseases in the area is unknown.Se recolectaron garrapatas (Acari: Ixodida: Argasidae, Ixodidae infestando humanos entre septiembre de 2004 y agosto de 2005 en un área del noroeste de Córdoba cuyo límite al sur es la localidad Deán Funes (30º25´S 64°20´W y el límite al norte es la localidad de San José de las Salinas (30°00´S 64°37´W. Las colecciones consistieron en garrapatas fijadas a humanos obtenidas de tres fuentes: 1 garrapatas fijadas sobre dos trabajadores durante dos días sucesivos por mes de trabajo de campo en la parte norte del área, la cual pertenece al distrito chaqueño occidental del dominio fitogeográfico del Chaco, 2 garrapatas fijadas a un trabajador en

  8. KURU MEYVE AKARI Carpoglyphus Lactis (L.) (Acari :Carpoglyphidae)’ İN FARKLI SICAKLIK VE NEM ORTAMLARINDAKİ GELİŞMESİ ÜZERİNE ARAŞTIRMALAR

    OpenAIRE

    GÜLDALI, Begül

    2007-01-01

    Ankara Üniversitesi Ziraat Fakültesi Bitki Koruma bölümünde yürütülen bu çalışmada Carpoglyphus lactis (L.) (Acari :Carpoglyphidae)’ in 18°C , 23°C ve 28 °C sıcaklık değerlerinde ve %65 ve % 80 orantılı nem değeri kombinasyonlarında biyolojik özellikleri incelenmiştir. Akarın gelişme süresi 5- 12 gün arasında değişmektedir. Sıcaklık ve orantılı nem artışıyla birlikte gelişme süresi kısalmıştır. Ergin ömür uzunluğu 11-68 gün arasında değişim göstermiştir. en uzun ergin ömrü 18°C ve % 65 ...

  9. Densidade de Neoseiulus californicus (McGregor, 1954 (Acari: Phytoseiidae no controle do ácaro-vermelho da macieira, Fraiburgo-SC Effect of Neoseiulus californicus McGregor (Acari: Phytoseiidae density of on the control of red mite in apple trees

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    Lino Bittencourt Monteiro

    2008-12-01

    Full Text Available O controle biológico aplicado de Panonychus ulmi (Koch (Acari: Tetranychidae em macieira iniciou em Vacaria (RS, em 1992, com a multiplicação de Neoseiulus californicus em estufas e liberação nas áreas de ocorrência da praga, fazendo com que o equilíbrio entre ambos os ácaros ocorresse semanas após a liberação. O presente trabalho teve o objetivo de verificar o efeito da densidade de N. californicus a ser liberada em pomar de macieira, Malus domestica (Borkh. Mansf., para o controle do ácaro-vermelho. Foi selecionado um pomar comercial em Fraiburgo (SC e liberados os fitoseídeos nas densidades de 50.000, 100.000 e 150.000 por ha, originados da criação comercial situada na Renar Maçãs (Fraiburgo. O controle do ácaro foi medido através da injúria, devido à alimentação de P. ulmi, e avaliado por meio de uma escala de sintomas de bronzeamento, e do monitoramento de ovos hibernantes em maio, julho e setembro. O tratamento com 150.000 fitoseídeos reduziu a população de ácaros- vermelhos após 16 dias da liberação, enquanto os demais tratamentos necessitaram de 21 dias. A injúria das folhas foi menor no tratamento com 150.000. Os ovos hibernantes em maio, nas parcelas de 50.000 e 100.000, foram, respectivamente, 75% e 69% maiores do que na parcela com 150.000 fitoseídeos. Concluiu-se que a liberação de 150.000 N. californicus foi mais eficiente no controle de P. ulmi no estágio fenológico reprodutivo da macieira.The applied biological control of Panonychus ulmi in apple orchards in Brazil began in Vacaria (RS, in 1992 by rearing Neoseiulus californicus in greenhouses and releasing them into infested areas. The balance between both mites took place weeks after the release. The aim of this work was to evaluate the effect of N. californicus density to be released in apple orchards for the control of the red mite. A commercial orchard in Fraiburgo (SC was chosen and populations of 50,000, 100,000 and 150,000 phytoseiidae

  10. Chlorotic spots on Clerodendrum, a disease caused by a nuclear type of Brevipalpus (Acari:Tenuipalpidae transmitted virus Mancha clorótica do Clerodendrum, uma enfermidade causada por um vírus do tipo nuclear, transmitido pelo ácaro Brevipalpus phoenicis (Acari:Tenuipalpidae

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    Elliot Watanabe Kitajima

    2008-02-01

    Full Text Available Chlorotic spots have been observed in plants of Clerodendrum x speciosum growing in residential gardens and parks in Piracicaba, SP, Brazil. Thin sections of diseased tissues revealed characteristic cytopathic effects of the nuclear type of the Brevipalpus (Acari: Tenuipalpidae mite-transmitted viruses (BTrV. Brevipalpus mites, identified as B. phoenicis, infesting symptomatic C. x speciosum plants transmitted the pathogen to healthy C. x speciosum and to C. thomsonae, Gomphrena globosa, Hibiscus cannabinus, H. coccineus, H. schizopetalus, Salvia leucantha, Spathiphyllum wallasi and Tetragonia expansa causing chlorotic spots on their leaves. Mechanical inoculation using leaf extracts from infected C. x speciosum resulted in chlorotic spots on inoculated C. x speciosum, Chenopodium quinoa, C. amaranticolor, G. globosa, H. cannabinus, H. coccineus and T. expansa leaves. C. amaranticolor and C. quinoa kept at 28 - 30°C became systemically infected. The same cytopathic effects caused by the nuclear type of BTrV were seen in tissues from all infected test plants by electron microscopy. The virus was purified from systemically infected leaves of C. amaranticolor and C. quinoa. A polyclonal antiserum obtained from an immunized rabbit presented a strong reaction with the homologous antigen in ELISA tests. The results suggest that this chlorotic spot disease of C. x speciosum is caused by a new species of the nuclear type of BTrV, tentatively named Clerodendrum chlorotic spot virus (ClCSV.Manchas cloróticas e necróticas foram observadas em folhas de várias plantas de coração-sangrento (Clerodendrum x speciosum cultivadas em parques e jardins em Piracicaba, SP, associadas à infestação pelo ácaro tenuipalpídeo Brevipalpus phoenicis. Exames preliminares de secções de tecido das manchas cloróticas ao microscópio eletrônico revelaram a ocorrência de efeitos citopáticos característicos dos induzidos pelos vírus do tipo nuclear, transmitido

  11. Sensibilité à Mononychellus tanajoa Bondar (Acari : Tetranychidae de quelques cultivars de manioc (Manihot esculenta Crantz et incidence des attaques sur le rendement, dans la région des hauts plateaux de l'Ouest Cameroun

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    Badegana, AM.

    2001-01-01

    Full Text Available Sensibility to Mononychellus tanajoa Bondar (Acari : Tetranychidae of some Cassava (Manihot esculenta Crantz, Cultivars and Effect of Damage on Yield Loss in the Cameroonian Western High-lands. The study of the sensibility towards the green mite Mononychellus tanajoa Bondar of some cassava (Manihot esculenta Crantz cultivars and the assessment of the effect of damage on the yield losses was carried out in the Western highlands of Cameroon. Four cassava cultivars were used : two local (Dschang and Njombe and two improved varieties (IITA 8017 and IITA 82516. The results obtained showed that the density (mites number/cm2 of leaf area was low during the rainy season and high during the dry season, which means that rains reduce the mite population by washing or lead the mites to death. The highest mean density (3.40 mites/cm2 of leaf area was obtained on the local Njombe cultivar which is consequently the most sensitive. On the contrary, the local Dschang cultivar, with the lowest mite density (1.40 mites/cm2 of leaf area was the most resistant followed by the IITA 8017 cultivar (1.74 mites/cm2. The IITA82516 cultivar had a mean density of2.65 mites/cm2. Yield losses ranged from 36.90 % for IITA 8017 (1.74 mites/cm2 and damages level of 2.75 to 58.70 % for local Dschang (3.40 mites/cm2 and damages level of 3.84. Local Dschang cultivar (1.40 mites/cm2 and damage level of 2.96 and IITA 82516 (2.65 mites/cm2 and damage level of 2.96 had a yield losse of38.10 % and 41.80 %. The results showed that higher the mite density and damage level are, higher is the yield loss, unless the cultivar is tolerant.

  12. Influence de l'usage préventif des pesticides sur les acariens Tetranychus urticae et Phytoseiulus persimilis (Acari : Tetranychidae, Phytoseiidae présents en cultures de fraisiers du Nord du Maroc

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    Lagziri, M.

    2015-01-01

    Full Text Available Influence of previous pesticide use on Tetranychus urticae and Phytoseiulus persimilis (Acari: Tetranychidae, Phytoseiidae from strawberry crops in the north of Morocco. Description of the subject. Effects of recommended doses of five common pesticides in the strawberries of Loukkos area (Morocco were tested on the two-spotted spider mite Tetranychus urticae and its predatory mite Phytoseiulus persimilis. Laboratory study assessed the contact toxicity of one avermectin miticide (abamectin, two pyrethrinoid insecticide-acaricides (bifenthrin and lambda-cyalothrin, and two fungicides: firstly, mancozeb, which belongs to the dithiocarbamates family of chemicals and secondly, hexaconazole, of the triazole family. Objectives. The aim of the present study was to test in laboratory conditions the effect of five pesticides on the two-spotted spider mite, T. urticae and its predatory mite, P. persimilis. The five pesticides tested were those most frequently applied for at least two years on strawberries at the experimental site. Method. Bioassays were performed with populations of mites originating from different plots with various crop protection backgrounds. The first group of plots had been repeatedly treated with the five tested pesticides during a two-year period, the second group had been moderately treated, and the third had been treated once with the tested pesticides. Results. Our results showed that the tested pesticides provided effective control of T. urticae but that they were not compatible with use on the predatory mite P. persimilis, as these particular mites did not usually come into contact with these products. On the other hand, in plots where pesticides had been used for a long time, the susceptibility of P. persimilis populations to these products was significantly reduced. Conclusions. If the tested pesticides are to be considered for integrated pest control programs in plots where they have been used for a long time and where P

  13. Detection of protozoans Babesia microti and [i]Toxoplasma gondii[/i] and their co-existence in ticks (Acari: Ixodida collected in Tarnogórski district (Upper Silesia, Poland

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    Marek Asman

    2015-02-01

    Full Text Available [b]Introduction[/b]. Ticks (Acari: Ixodida are vectors of many pathogens i. a: [i]Babesia microti [/i][Bm] and [i]Toxoplasma gondii[/i] [Tg]. In Poland, Ixodes ricinus [Ir] is the main vector of both pathogens. This tick species and pathogens transmitted by them are a significant threat to human and animal health. objectives of the study. Detection of the protozoans Bm and Tg in ticks collected in the Tarnogórski district area. [b]Material and methods[/b]. The ticks were collected from vegetation and pets in the spring period of their activity on the territory of the Tarnogórski district. The parasites were preserved in 70% ethanol. DNA was isolated by ammonia method. Bm was detected by nested-PCR using specific primers for the 18S rRNA sequence. To detect the Tg a commercial kit was used. The PCR products were separated on 2% ethidium bromide stained agarose gels and visualised under UV light. [b]Results[/b]. It was showed that all collected ticks belonged to the species Ir. Bm was detected in 50.87% and Tg in 64.91% of all examined ticks. Co-existence of these both protozoans in 36.84% of total examined ticks was noted. [b]Conclusions[/b]. The study showed a high risk of exposure to Bm and Tg in the studied area. Ticks Ir play an important role in the transmission of Bm in this region. Demonstrating a high percentage of ticks collected from animals infected with Tg may indicate their important role in the transmission of this pathogen, but it requires a further studies.

  14. THE RELATION BETWEEN CHANT AND MYTY ON THE AIKEWÁRA RITE

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    Gilmar Matta da Silva

    2009-12-01

    Full Text Available In the group of tradicional knowledges that include the most varied fields of the knowledge of the indigenous people the song (music doesn't present a status differentiated as it happens in our society, but it is associated to other practices as the construction of the musical instruments, the narration of the myths, the performance of the dances and rituals. Based in the oral tradition of Aikewára the article emphases the relationship between song and myth to analize the integration and interaction and the Sapurahái of Karuára.

  15. THE RELATION BETWEEN CHANT AND MYTY ON THE AIKEWÁRA RITE

    OpenAIRE

    Gilmar Matta da Silva

    2009-01-01

    In the group of tradicional knowledges that include the most varied fields of the knowledge of the indigenous people the song (music) doesn't present a status differentiated as it happens in our society, but it is associated to other practices as the construction of the musical instruments, the narration of the myths, the performance of the dances and rituals. Based in the oral tradition of Aikewára the article emphases the relationship between song and myth to analize the integration and int...

  16. Chants des minorités des Hauts Plateaux du Nord Vietnam

    OpenAIRE

    Trân Quang Hai,

    2012-01-01

    Jusqu’à présent on peut trouver plusieurs disques sur la musique de cour, la musique de chambre et la musique de théâtre du Viêt Nam, principalement produits, en tant que collecteurs ou interprètes, par Trân Van Khê et l’auteur de ces lignes. Un disque sur la musique des Mnong Gar, montagnards du Centre Viêt Nam, a jadis été édité par Ocora à partir d’enregistrements de Georges Condominas, mais c’est à ma connaissance la première fois qu’un disque sur la musique des minorités du Nord Viêt Nam...

  17. A Study of Post-colonialism in the Identity Recreation of The Chant of Jimmie Blacksmith

    Institute of Scientific and Technical Information of China (English)

    邱伟

    2012-01-01

    Facing with the dominant western culture,the once being colonized people begin to doubt their identity belonging.Suffering a wide spread loss of identity belonging,they are eager to set and recreate their personal identity.

  18. "The Tools of Your Chants and Spells": Stories of Madwomen and Indian Practical Healing.

    Science.gov (United States)

    Pinto, Sarah

    2016-01-01

    A longstanding trope in Indian psychiatry, and in popular representations of it, involves the efficacy of incantations and exorcism in healing afflictions of the mind, notably hysteria. In many accounts, from nineteenth century medical journals to twenty-first century popular films, a medicine deemed at once 'Western' and universal is granted the ability to diagnose neurotic afflictions, but rendered incapable of curing them, while bodily techniques referred to as 'Indian' are granted efficacy. In this article, I explore the subtleties and implications of this recurrent knowledge paradigm. I argue that a particular arrangement-one in which difference is established through equivalence-undergirds the terms by which medicine comes to be viewed as a cultural encounter. As these progressive formulations are often founded on stories about women's madness, I ask, what are the implications of an arguably pragmatic ethos founded on an uneven-and deeply gendered-resolution to postcolonial knowledge problems? PMID:26263046

  19. Localisation, caractérisation et reconnaissance de voix chantées

    OpenAIRE

    Regnier, Lise

    2012-01-01

    This dissertation is concerned with the problem of describing the singing voice within the audio signal of a song. This work is motivated by the fact that the lead vocal is the element that attracts the attention of most listeners. For this reason it is common for music listeners to organize and browse music collections using information related to the singing voice such as the singer name. Our research concentrates on the three major problems of music information retrieval: the localization ...

  20. Edward Burne-Jones’ Art and Music: A Chant of Love

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    Liana De Girolami Cheney

    2015-10-01

    Full Text Available This essay examines Edward Burne-Jones’ (August 28, 1833–June 17, 1898 artistic concepts of ut pictura poesis (as is painting, so is poetry and ut pictura musica (as is painting so is music, a comparison of poetry, music, and painting depicted in his imagery of the Female Musician of 1866 (at the Whitworth Art Gallery in Manchester, UK, Fig. 1, and Music of 1877 (at the Ashmolean Museum in Oxford, UK, Fig. 2.  The comparison or paragone between music and art is viewed here in two ways: 1 in a natural realm as an expression of love for a muse, Maria Cassavetti Zambaco; and 2 in a metaphysical realm as a vehicle of artist expression for depicting beauty. Painting and music are then poetical guidance for Burne-Jones’ manifestation of love. Maria is Burne-Jones’ model, muse, and sorceress. His paintings are depictions of musical scenes that capture a poetical world of ardent and endless love, as well the world of the senses, a physical realm, and the world of aesthetics, a metaphysical realm.

  1. Antenatal care for HIV positive women / Chantéll Doubell

    OpenAIRE

    Doubell, Chantéll

    2007-01-01

    Approximately 29.1% of South African women of childbearing age tested HIV positive during their first antenatal visit in 2006 (DoH, 2007). This rate of HIV amongst the women of childbearing age reinforces the importance of understanding the management of HIV during pregnancy. During antenatal visits the general health of the woman and her unborn baby is assessed and managed. Management includes antiretroviral therapy to the HIV infected women with a CD4 count below 200 cells/mm3, while women ...

  2. A comparative study of the dynamics of Wolbachia infection in different populations of Tetranychus urticae (Acari : Tetranychidae)%共生菌Wolbachia在中国二斑叶螨种群中的扩散规律

    Institute of Scientific and Technical Information of China (English)

    谢蓉蓉; 陈小琳; 孙荆涛; 洪晓月

    2013-01-01

    共生菌Wolbachia在中国二斑叶螨Tetranychus urticae Koch中分布广泛,所有的地理种群中均感染Wolbachia.以二斑叶螨湖南长沙(HN),辽宁兴城(LN)和江苏徐州(JS)3个地理种群为实验材料,经筛选获得100%感染和不感染Wolbachia的品系后,人工设置Wolbachia感染率为50%的品系,通过PCR技术检测二斑叶螨连续世代Wolbachia感染率动态变化,研究Wolbachia在二斑叶螨种群中的扩散规律.结果表明:3个地理种群的垂直传播效率都为100%;HN种群Wolbachia感染率上升速度最快,F7代达到100%感染;LN种群F12达到100%感染;而JS地理种群中Wolbachia感染率速度上升最慢,在F20代达到100%感染,其后感染率均能稳定在100%.LN种群Wolbachia通过诱导胞质不亲和的策略,JS种群的Wolbachia通过提高寄主适合度的策略,而HN种群Wolbachia则通过诱导胞质不亲和与提高寄主适合度两者相结合的策略,最终达到在二斑叶螨中维持感染状态并扩散传播的目的.本研究结果为今后利用Wolbachia的扩散规律控制有害生物及疾病传播提供了基础.%Maternally inherited Wolbachia bacteria are widely distributed in Chinese populations of the two-spotted spider mite Tetranychus urticae Koch (Acari; Tetranychidae). All populations were found to be infected with Wolbachia. Using the Hunan ( HN) , Liaoning ( LN ) and Jiangsu ( JS) populations of T. urticae as experimental subjects, 100% Wolbachia-infected and 100% uninfected spider mite lines were obtained by screening. This study investigated the dynamics of Wolbachia spread in the two-spotted spider mite. Infection frequencies of Wolbachia among the progenies of the artificial populations, initiated with 50% infected and 50% uninfected female adults, were monitored by PCR. The results show 100% maternal transmission in all three populations. The rate of spread was fastest in the HN population in which the infection rate reached 100% by the F7

  3. Hyperparasitism in Amblyomma rotundatum (Acari: Ixodidae).

    Science.gov (United States)

    Labruna, M B; Ahid, S M M; Soares, H S; Suassuna, A C D

    2007-12-01

    In the present study, we report a case of hyperparasitism in Amblyomma rotundatum. During examination of live ticks immediately after collecting them from Boa constrictor snakes held in a reptile facility in Mossoró, RN, northeastern Brazil, 1 unengorged tick female was seen attached to the venter of a partially engorged female. The hypostome and chelicerae of the unengorged female had penetrated the integument of the partially engorged female to the level of the basis capitulli and the palps were splayed outward. To our knowledge, we present the second report of hyperparasitism for the genus Amblyomma. PMID:18314708

  4. Ticks (Acari: Ixodoidea: Argasidae, Ixodidae) of Chile.

    Science.gov (United States)

    González-Acuña, Daniel; Guglielmone, Alberto A

    2005-01-01

    The tick species recorded from Chile can be listed under the following headings: (1) endemic or established: Argas keiransi Estrada-Peña, Venzal and Gonzalez-Acuña, A. neghmei Kohls and Hoogstraal; Ornithodoros amblus Chamberlin; Otobius megnini (Dugès); Amblyomma parvitarsum Neumann; A. tigrinum Koch; Ixodes auritulus Neumann; I. chilensis Kohls; I. cornuae Arthur, I. sigelos Keirans, Clifford and Corwin; I. stilesi Neumann; I. uriae White; Rhipicephalus sanguineus Koch. (2) Probably established or endemic: Argas miniatus Koch; Ornithodoros spheniscus Hoogstraal, Wassef, Hays and Keirans; Ixodes abrocomae Lahille; I. neuquenensis Ringuelet; I. pararicinus Keirans and Clifford. (3) Doubtfully established: Argas reflexus Fabricius; Ornithodoros talaje (Guérin-Méneville). (4) Exotic: Amblyomma argentinae Neumann; A. latum Koch, Rhipicephalus (= Boophilus) microplus (Canestrini). (5) Erroneously identified as present in Chile: Amblyomma americanum (Linnaeus); A. maculatum Koch; A. varium Koch; Ixodes conepati Cooley and Kohls; I. frontalis (Panzer); I. ricinus (Linnaeus); Margaropus winthemi Karsch. (6) Nomina nuda: Argas reticulatus Gervais; Amblyomma inflatum Neumann; Ixodes lagotis Gervais. Hosts and localities (including new records) are presented. Argas neghmei, O. amblus, O. megnini, I. uriae and R. sanguineus may cause severe injury to their hosts, including humans. The Chilean Ixodes fauna is unique to the Neotropical Zoogeographic Region, and additional research is needed in order to understand the biological importance of these species. PMID:15777007

  5. Foi et effroi à travers les Chants bibliques op. 99 d’Antonín Dvořák

    OpenAIRE

    Tual, François-Gildas

    2005-01-01

    The 10 Biblical songs, a complete cycle, are based on ten Psalms, freely built by Dvorak from excerpts of original texts. The whole, based especially on the dialectic of faith and fright, caused the composer to set to music some words and sentences in a special way. Chosen verses, omitted verses, metrics, nuances, tonal constructions, but also linguistic adjustments – for English or German translations – and multiplication of the versions (with piano or with orchestra) put in light a progress...

  6. Isparta İli Elma Bahçelerinden Toplanan Avcı Akar Neoseiulus californicus (Acari: Phytoseiidae Popülasyonlarının Bazı Akarisitlere Karşı Direnç Düzeyleri ve Direnç Mekanizmaları

    Directory of Open Access Journals (Sweden)

    Sibel YORULMAZ

    2014-07-01

    Full Text Available Bu çalışmada, Isparta ili elma bahçelerinden 2010 yılında toplanan avcı akar, Neoseiulus californicus (McGregor (Acari: Phytoseiidae popülasyonlarının spiromesifen, spirodiclofen ve hexythiazox'a karşı duyarlılık düzeyleri biyoassaylerle belirlenmiştir. Ayrıca popülasyonlarda direnç mekanizmaleri biyokimyasal enzim assayleri ve PBO, IBP ve DEM sinerjistleri kullanılarak incelenmiştir. N. californicus popülasyonlarının LC50 değerlerinin belirlenmesi için belirli konsantrasyon serilerinde hazırlanan ilaç çözeltileri yaprak diskleri üzerindeki akarlara ilaçlama kulesi (Spray Tower ile doğrudan püskürtülmüştür. 2010 yılında elma bahçelerinden 8 farklı N. californicus popülasyonu toplanmıştır. Eğirdir- Boğazova, Eyüpler-1, Eyüpler-2, Gelendost-1, Gelendost-3, Gelendost-8, Gökdere ve Sarıidris'den alınan popülasyonlarda spiromesifen'e karşı sırasıyla 5.87, 5.44, 7.09, 4.87, 7.61, 6.87, 4.35 ve 5.86 kat; hexythiazox'a karşı 5.65, 7.27, 8.01, 7.07, 7.35, 5.56, 3.75 ve 7.88 kat ve spirodiclofen'e karşı 8.48, 7.71, 8.60, 5.07, 7.09, 6.08, 5.63 ve 8.29 kat direnç belirlenmiştir.. Biyokimyasal enzim esseyleri için popülasyonlarda glutathion S-transferaz (GST ve asetilkolinesteraz (AChE enzimleri kinetik yöntemle, esteraz enzimi elektroforez ve kinetik yöntemlerle belirlenmiştir. Esteraz, glutathion S-transferaz (GST ve asetilkolinesteraz (AChE enzim aktiviteleri sırasıyla 7,748-10,211; 1,23-1,74 ve 0,010-0,045 mOD/min/mg protein olarak belirlenmiştir.

  7. Caracterização de um vírus baciliforme isolado de Solanum violaefolium transmitido pelos ácaros Brevipalpus phoenicis e Brevipalpus obovatus (Acari: Tenuipalpidae Characterization of a bacilliform virus isolated from Solanum violaefolium transmitted by the tenuipalpid mites Brevipalpus phoenicis and Brevipalpus obovatus

    Directory of Open Access Journals (Sweden)

    Paulo de Tarso Oliveira Ferreira

    2007-09-01

    Full Text Available Solano-violeta (Solanum violaefolium é uma planta ornamental rasteira usada para cobrir solos de áreas sombreadas. Um vírus que induz manchas anelares nas folhas desta planta, tentativamente designado Solanum violaefolium ringspot virus - SvRSV, transmitido pelo ácaro Brevipalpus phoenicis (Acari: Tenuipalpidae foi encontrado em Piracicaba, SP. Trata-se de um vírus baciliforme que se assemelha a outros vírus do tipo citoplasmático transmitidos por Brevipalpus sp. Este trabalho teve como objetivo relatar propriedades biológicas e estabelecer uma caracterização molecular parcial do SvRSV. O vírus pode ser transmitido mecanicamente a várias outras espécies botânicas, causando lesões localizadas. Entre as espécies avaliadas, Datura stramonium mostrou-se a melhor hospedeira experimental. Observou-se também a manifestação de sintomas nestas plantas após infestação das mesmas por B. obovatus previamente alimentado em lesões de SvRSV, confirmando esta outra espécie de ácaro como vetor do vírus. Suas propriedades físicas in vitro foram: temperatura de inativação 40-45 ºC; ponto final de diluição 10-3-10-4; longevidade in vitro 12 dias. Em secções ultrafinas, as partículas do SvRSV mostraram-se levemente mais delgadas e mais longas que as de outros vírus do mesmo grupo. A partir do dsRNA do SvRSV foi construída uma biblioteca de cDNA e foram identificadas duas possíveis regiões codificadoras das proteínas de movimento e replicase viral. Baseado nestas regiões foram desenhados "primers" para amplificação do RNA do SvRSV por RT-PCR. Sondas baseadas nas seqüências obtidas hibridizaram com ss- e dsRNA de D. stramonium infectadas pelo vírus. Ensaios preliminares de RT-PCR e hibridização não resultaram em reação com o vírus da leprose dos citros, tipo citoplasmático (CiLV-C.Solanum violaefolium is an ornamental plant, with prostrate, trailing growth habit and is cultivated in shaded areas. A virus that causes

  8. Seleções para resistência e suscetibilidade, detecção e monitoramento da resistência de Tetranychus urticae ao acaricida clorfenapir Selections for resistance and susceptibility, detection and monitoring of resistance to the acaricide chlorfenapyr in Tetranychus urticae koch (Acari: Tetranychidae

    Directory of Open Access Journals (Sweden)

    Mário Eidi Sato

    2007-01-01

    Full Text Available Problemas com resistência de ácaro-rajado, Tetranychus urticae Koch (Acari: Tetranychidae, a acaricidas têm sido registrados em diversos países, inclusive no Brasil. O estudo teve como objetivo caracterizar a resistência de T. urticae ao acaricida clorfenapir e avaliar a freqüência de resistência a esse composto em áreas comerciais de seis culturas no Estado de São Paulo. Seleções para resistência e suscetibilidade a clorfenapir foram realizadas em laboratório, utilizando-se uma população de T. urticae coletada em 2002 de um cultivo comercial de crisântemo em Holambra (SP. Após seis seleções para resistência e cinco seleções para suscetibilidade, foram obtidas as linhagens suscetível (S e resistente (R de T. urticae a clorfenapir. A razão de resistência (CL50 R/ CL50 S obtida alcançou valores de 571 vezes. Estabeleceu-se uma concentração discriminatória de 37,4 mg L-1 de ingrediente ativo (i.a. para o monitoramento da resistência de T. urticae a clorfenapir. O monitoramento foi realizado coletando-se 21 populações de ácaros em áreas comerciais de diferentes culturas (mamão, morango, feijão, tomate, crisântemo, rosa, em vários municípios do Estado de São Paulo. Arenas confeccionadas com folha de feijão foram infestadas com ácaros T. urticae e pulverizadas com clorfenapir, na sua concentração discriminatória, em torre de Potter. Os resultados indicaram grande variabilidade entre as populações com relação à suscetibilidade a clorfenapir. Foram observadas populações com freqüências de resistência entre 0,0 e 65,4%. As maiores freqüências de resistência foram observadas para populações coletadas de crisântemo em Holambra (SP.Problems associated with acaricide resistance in Tetranychus urticae Koch have been recorded in several countries including Brazil. The objective of this study was to characterize the resistance of T. urticae to the acaricide chlorfenapyr and to evaluate the resistance

  9. 二斑叶螨两种群中Wolbachia诱导的胞质不亲和作用的影响因子比较研究%A comparative study of factors influencing the expression of Wolbachiainduced cytoplasmic incompatibility in two populations of the two-spotted spider mite, Tetranychus urticae Koch ( Acari: Tetranychidae)

    Institute of Scientific and Technical Information of China (English)

    陆明红; 谢蓉蓉; 赵臻君; 于明志; 薛晓峰; 洪晓月

    2011-01-01

    The cytoplasmic incompatibility (CI) is the most common effect of Wolbachia on the reproduction of its arthropod hosts, and the expression of CI differs greatly among different populations. Using the Jiangsu (JS) and Liaoning (LN) populations of the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) , as experimental materials, 100% infected and uninfected Wolbachia lines were obtained by screening. The present study tried to evaluate some factors influencing the expression of CI in the spider mite by crossing experiment and Real-time quantitative PCR. These factors include age of host, temperature, host genes and Wolbachia density. The 1, 3, 5, 7-day-old virgin males were used to investigate the influence of host age on Wolbachia-induced CI. The results showed no effect of age on CI, suggesting that host age does not reduce the sperm modification induced by Wolbachia. The effect of temperatures (20℃, 25℃ and 30℃ ) on the CI induced by Wolbachia was also checked. Neither high nor low temperatures influenced the expression of CI. Wolbachia density in males of the JS population, as measured by quantitative PCR using the wsp (surface protein of Wolbachia) gene, was significantly higher than that in the LN population. In addition, in both the JS and LN populations, Wolbachia density increased with the age of male hosts. Wolbachia density also showed no effect on CI. We estimated the variability of CI expression between the JS and LN population of T. Urticae was due to the interaction between Wolbachia and host genotypes. The results might provide foundation for understanding the mechanisms of reproductive manipulation induced by Wolbachia.%Wolbachia诱导胞质不亲和(cytoplasmic incompatibility,CI)是对寄主的生殖调控中最常见的一种方式,在不同种群中CI表达的差异较大.以二斑叶螨Tetranychus urticae辽宁兴城(LN)和江苏徐州(JS)两个地理种群为实验材料,经筛选获得100%感染Wolbachia和不感

  10. Can exotic phytoseiids be considered 'benevolent invaders' in perennial cropping systems?

    Science.gov (United States)

    Palevsky, Eric; Gerson, Uri; Zhang, Zhi-Qiang

    2013-02-01

    Numerous natural enemies were adopted worldwide for the control of major pests, including exotic phytoseiid species (Acari: Mesostigmata: Phytoseiidae) that had been moved from continent to continent in protected and perennial agricultural systems. However, relatively fewer successes were recorded in perennial agricultural systems. In this manuscript we focus on the question: Can and will exotic phytoseiids provide better pest control than indigenous species in perennial agricultural systems? To answer this question, we review the efficacy of biological control efforts with phytoseiids in several case studies, where exotic and indigenous species were used against pests on indigenous host plants and some crops that were historically or recently introduced. Related factors affecting predator establishment, such as intraguild predation and pesticide effects are discussed, as well as the potential negative effects of exotic species releases on biological control and their impact on the indigenous natural fauna. On citrus, apple, grape and cassava exotic phytoseiids have enhanced biological control without negatively affecting indigenous species of natural enemies, except for the case of Euseius stipulatus (Athias-Henriot) on citrus that displaced Euseius hibisci (Chant) in a limited region of coastal California, USA, the latter considered to be an inferior biocontrol agent of Panonychus citri Koch. Phytoseiulus persimilis Athias-Henriot on gorse, an invasive weed, is perhaps the only recorded case of a negative effect of an established exotic phytoseiid on biological control. PMID:22669275

  11. Le chant des hyènes tristes. Essai sur les rites funéraires des Meru du Kenya et des peuples apparentés

    OpenAIRE

    PEATRIK, Anne-Marie

    2013-01-01

    Un refus délibéré d'enterrer les cadavres et deux modes très différents de traitement des défunts caractérisent les rituels funéraires meru. Le corps d'un grand-parent est l'objet de soins particuliers que lui prodiguent ses fils et ses petits-enfants alors que celui de tout autre défunt est jugé dangereux et ne peut être manipulé que par le mwenjî, être marginal, qui le dépose en brousse à la disposition des hyènes. Ce dispositif peut être lu comme l'expression d'un système social fondé sur ...

  12. Joaquín Nin y su legado: Valoración crítica y perspectivas de estudio en torno a Vingt chants populaires espagnols (1923)

    OpenAIRE

    Pérez de Alejo, Liz Mary

    2015-01-01

    La producción artística e intelectual de Joaquín Nin (La Habana, 1879-1949) comprende música para diversos formatos—piano, voz y piano, voz y conjunto instrumental, violín y piano, violoncello y piano, entre otras combinaciones instrumentales—, ensayos estéticos, artículos de interés musicológico y ediciones críticas de obras para tecla del siglo XVIII. El hecho de que su legado se halle disperso en bibliotecas de distintos países, distantes entre sí, ha impedido el estudio sistémico de su pe...

  13. Hidden traditional and contemporary vocal articulations in singing voice : Articulations vocales cachées dans la voix chantée traditionnelle et contemporaine

    OpenAIRE

    Pillot-Loiseau, Claire; Crevier-Buchman, Lise

    2013-01-01

    International audience Classical singing is known to be defined with a scholarly tradition. This vocal technique is primarily written transmitted, while modern singing variety is essentially composed by oral tradition and transmission. Traditional singing contained various popular cultures: its transmission is essentially spontaneous and oral. Contemporary music, initially music for only ”expert” people, and with written transmission, often borrows from other technical characteristics, par...

  14. Satan et la révolution dans Paradise Lost de Milton traduit par Chateaubriand : Commentaire traductologique du discours de Satan (chant I : vers 622-663

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    Aurélie Renault

    2010-01-01

    Full Text Available When Chateaubriand translated Paradise Lost by Milton, he revolutionized the universe of translation by offering a perfect imitation of Milton‘s work. Indeed, he used to call this device “traduire à la vitre”, which means providing a transparent translation. This way, he remained faithful to the strangeness of the English language and refused any adaptation. However, the translation of a work which to some values related to the English revolution by an author who left for London during the French revolution raises several questions: could the “Enchanteur” get rid of his stylistic prints? Didn’t he leave his imprint on Milton’s style? Was the positive side of Satan, assimilated to Freedom, completely depicted in the translation of a counter-revolutionary author? The analysis of Chateaubriand’s translation of Satan’s speech to his troops when the paradise is lost gives an answer to all these questions.

  15. Satan et la révolution dans Paradise Lost de Milton traduit par Chateaubriand : Commentaire traductologique du discours de Satan (chant I : vers 622-663)

    OpenAIRE

    Aurélie Renault

    2010-01-01

    When Chateaubriand translated Paradise Lost by Milton, he revolutionized the universe of translation by offering a perfect imitation of Milton‘s work. Indeed, he used to call this device “traduire à la vitre”, which means providing a transparent translation. This way, he remained faithful to the strangeness of the English language and refused any adaptation. However, the translation of a work which to some values related to the English revolution by an author who left for London during the Fr...

  16. La portée de la voix parlée et chantée : aspects scientifiques et rééducatifs

    OpenAIRE

    Pillot-Loiseau, Claire; Vaissière, Jacqueline

    2009-01-01

    ISBN 978-2-914121-91-0 This study illustrates how research can clarify the vocal therapy practice in the field of the spoken and sung voice carrying power. The vocal effectiveness means a voice: 1) which carries 2) without effort. It's a very frequent demand of the patients with spoken and sung voice disorders coming by the voice therapist. It is a question of " making the effort not to take it " (Rameau, 1760). 1) "Make the effort" means a specific vocal gesture: a laryngeal lowering is i...

  17. « L'esthétique du chant dans la piété calviniste aux premiers temps de la Réforme (1536-1545) »

    OpenAIRE

    Grosse Christian

    2010-01-01

    Contrairement aux idées reçues, l'esthétique assume bien une fonction dans les formes rituelles adoptées par les Eglises issues de la Réforme calviniste. Mais il revient moins à l'image, considérée avant tout comme une source de distraction, qu'à la musique de porter cette dimension dans la piété réformée. Retraçant la formation de la pensée calvinienne sur la question des rapports entre culte et musique entre 1536 et 1543, cette étude montre comment le théologien en vient durant ces années à...

  18. La influencia de la épica de África central en Le chant de So de Richard M. Keuko

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    Vicente Enrique Montes Nogales

    2013-04-01

    Full Text Available For his last novel, Cameroonian writer Richard M. Keuko, drew inspiration from African traditions and, chiefly, from epic narratives originating in Central Africa that continue to spark great interest in local communities. The protagonist of the story fleshes out the specific traits of the epic hero, which is why the narrator, following suit the ancient bards’ tradition, emphasizes his courage, strength, pride and moral superiority. Further features such as the dialogic structure of the text –which enables the narrator to address the reader directly– and the inclusion of a number of oral texts, rally this work with the epic genre.

  19. Le discours de Sarpédon à Glaukos au chant XII de l'Iliade ou l’exposé d'un contrat social

    OpenAIRE

    Wathelet, Paul

    2013-01-01

    Sarpédon est, dans l’Iliade, un curieux personnage. Son nom est dépourvu d’étymologie en grec, il s’agit très probablement d’un anthroponyme préhellénique. Le héros apparaît à plusieurs reprises dans le poème. Dans le Catalogue Troyen (B 876-877), il commande le dernier contingent mentionné, celui des Lyciens, en compagnie de Glaukos. Le poète insiste sur le fait qu’ils viennent de la lointaine Lycie, des bords du « Xanthe tourbillonnant », l’expression est formulaire, mais le nom de Xanthos,...

  20. Poésie et Chimie : "Le Chant du Styrène" de Raymond Queneau, et l'enseignement de la chimie macromoléculaire.

    OpenAIRE

    Bollinger, Jean-Claude

    1987-01-01

    Partant d'une comparaison des textes du commentaire du film d'Alain Resnais (1958) et du poème publié par Raymond Queneau (1969), on discute les étapes de la synthèse industrielle du polystyrène, et on suggère quelques sujets de travaux pratiques de chimie des polymères.

  1. Voucher specimens for DNA sequences of Phytoseiid mites (Acari: Mesostigmata)

    OpenAIRE

    Tixier, Marie-Stéphane; Okassa, Mireille; Liguori, Marialivia; Poinso, Alix; Salerno, Barbara; Kreiter, Serge

    2010-01-01

    Molecular approaches are increasingly used to help in species diagnostics. These approaches have been recently and successfully applied to assess some taxonomic questions within the mite family Phytoseiidae. However, many protocols for DNA extraction of such small specimens require crushing the entire sample, precluding deposition of the carcass as a museum voucher. This study aimed to determine the efficiency of a modified Qiagen DNeasy tissue kit extraction method to both extract enough DNA...

  2. Biological studies of Oligonychus punicae (Acari: Tetranychidae) on grapevine cultivars.

    Science.gov (United States)

    Vásquez, Carlos; Aponte, Orlando; Morales, José; Sanabria, María E; García, Grisaly

    2008-06-01

    Life cycle, fecundity and longevity of the avocado brown mite, Oligonychus punicae (Hirst), were studied on six grapevine cultivars (Tucupita, Villanueva, Red Globe, Sirah, Sauvignon and Chenin Blanc), under laboratory conditions at 27 +/- 2 degrees C, 80 +/- 10% RH, and L12:D12 photoperiod. Mite-infested leaves were collected from vineyards, placed in paper bags and taken to the laboratory. A laboratory mite culture was established using the grape cultivar Criolla Negra as host plant. To elucidate potential effects on avocado brown mite parameters, we assessed levels of secondary metabolites, such as alkaloids, flavonoids, tannins and polyphenols, of leaves of the six grape cultivars, as well as the thickness of the adaxial cuticle-epidermis. The life cycle of O. punicae differed among cultivars with average values ranging between 8.2 days on Tucupita leaves and 9.1 days on Sirah. Relatively high fecundity was found on Tucupita leaves (2.8 eggs/female/day) during 11.4 oviposition days, while low fecundity values occurred on Sirah and Villanueva leaves, with 0.9 and 1.8 eggs/female/day during 7.9 and 6.7 days, respectively. Average longevity of O. punicae females ranged from 8.1 to 17.5 days on Sirah and Sauvignon leaves, respectively. Intrinsic rate of increase (r (m)) was highest on Sauvignon (0.292) and Tucupita (0.261), and lowest on Sirah (0.146) and Villanueva (0.135). Although significant differences in cuticle-epidermis thickness were detected among the six cultivars, it seemed not to affect mite parameters. Secondary metabolite content also varied between the cultivars. Generally, increasing flavonoid content coincided with decreasing reproductive parameters. The natural plant resistance observed in this study could be useful in the development of an integrated pest management program for mite pests in grape production. PMID:18483791

  3. Vectorial role of some dermanyssoid mites (Acari, Mesostigmata, Dermanyssoidea

    Directory of Open Access Journals (Sweden)

    Valiente Moro C.

    2005-06-01

    Full Text Available Among transmissible diseases, vectorial diseases represent a major problem for public health. In the group of acarina, while ticks are the most commonly implicated vectors, other arthropods and notably Dermanyssoidea are also involved in the transmission of pathogenic agents. Since the role of this superfamily is at present largely unknown, we have reviewed the vectorial role of these mites in the appearance, survival and propagation of pathogens. Various authors have shown that Dermanyssoidea are implicated in the transmission of both bacteria (Salmonella, Spirocheta, Rickettsia or Pasteurella and viruses (equine encephalitis viruses, West Nile virus, Fowl pox virus, the virus causing Newcastle disease and tick borne encephalitis viruses or hantaviruses. Finally, some authors have also shown their role in the transmission of some protozoa and filaria. As the vectorial character of such mites has been more clearly demonstrated (Dermanyssus gallinae, Ornithonyssus bacoti and Allodermanyssus sanguineus, it would be interesting to continue studies to better understand the role of this superfamily in the epidemiology of certain zoonoses.

  4. Thermal requirements of Dermanyssus gallinae (De Geer, 1778 (Acari: Dermanyssidae

    Directory of Open Access Journals (Sweden)

    Edna Clara Tucci

    2008-06-01

    Full Text Available The thermal requirements for development of Dermanyssus gallinae were studied under laboratory conditions at 15, 20, 25, 30 and 35°C, a 12h photoperiod and 60-85% RH. The thermal requirements for D. gallinae were as follows. Preoviposition: base temperature 3.4ºC, thermal constant (k 562.85 degree-hours, determination coefficient (R² 0.59, regression equation: Y= -0.006035 + 0.001777 x. Egg: base temperature 10.60ºC, thermal constant (k 689.65 degree-hours, determination coefficient (R² 0.94, regression equation: Y= -0.015367 + 0.001450 x. Larva: base temperature 9.82ºC, thermal constant (k 464.91 degree-hours, determination coefficient R² 0.87, regression equation: Y= -0.021123+0.002151 x. Protonymph: base temperature 10.17ºC, thermal constant (k 504.49 degree-hours, determination coefficient (R² 0.90, regression equation: Y= -0.020152 + 0.001982 x. Deutonymph: base temperature 11.80ºC, thermal constant (k 501.11 degree-hours, determination coefficient (R² 0.99, regression equation: Y= -0.023555 + 0.001996 x. The results obtained showed that 15 to 42 generations of Dermanyssus gallinae may occur during the year in the State of São Paulo, as estimated based on isotherm charts. Dermanyssus gallinae may develop continually in the State of São Paulo, with a population decrease in the winter. There were differences between the developmental stages of D. gallinae in relation to thermal requirements.Experimentos de laboratório foram realizados visando estimar as exigências térmicas de Dermanyssus gallinae. Para isso, o desenvolvimento do ácaro foi estudado em condições de laboratório usando-se câmaras climatizadas reguladas a 15, 20, 25, 30 e 35°C, fotofase de 12h e UR de 6085%. As exigências térmicas determinadas para D. gallinae foram: Pré-oviposição: temperatura base de 3,4 ºC, constante térmica (k igual a 562,85 graus-hora, coeficiente de determinação (R² igual a 0,59, equação de regressão: Y= -0,006035 + 0,001777 x. Ovo. Temperatura base de 10,60 ºC, constante térmica (k igual a 689,65 graus-hora, coeficiente de determinação (R² igual a 0,94, equação de regressão: Y= -0,015367 + 0,001450 x. Larva. Temperatura base 9,82 ºC, constante térmica (k igual a 464,91 graus-hora, R² igual a 0,87, equação de regressão: Y= -0,021123+0,002151x. Protoninfa. Temperatura de 10,17 ºC, constante térmica (k igual a 504,49 graus-hora, coeficiente de determinação (R² igual a 0,90, equação de regressão: Y= -0,020152 + 0,001982 x. Deutoninfa. Temperatura de 11,80 ºC, constante (k térmica igual a 501,11 graus-hora, coeficiente de determinação (R² igual a 0,99, equação de regressão: Y= -0,023555 + 0,001996 x. Os resultados obtidos permitem concluir que no Estado de São Paulo podem ocorrem de 15 a 42 gerações/ano de D. gallinae, em estimativa baseada em isotermas. Dermanyssus gallinae pode se desenvolver continuamente no Estado de São Paulo, com diminuição da população no inverno. Existem diferenças entre os estágios de desenvolvimento de D. gallinae com relação às exigências térmicas.

  5. Thermal requirements of Dermanyssus gallinae (De Geer, 1778) (Acari: Dermanyssidae)

    OpenAIRE

    Edna Clara Tucci; Angelo P. do Prado; Raquel Pires de Araújo

    2008-01-01

    The thermal requirements for development of Dermanyssus gallinae were studied under laboratory conditions at 15, 20, 25, 30 and 35°C, a 12h photoperiod and 60-85% RH. The thermal requirements for D. gallinae were as follows. Preoviposition: base temperature 3.4ºC, thermal constant (k) 562.85 degree-hours, determination coefficient (R²) 0.59, regression equation: Y= -0.006035 + 0.001777 x. Egg: base temperature 10.60ºC, thermal constant (k) 689.65 degree-hours, determination coefficient (R²) 0...

  6. Vectorial role of some dermanyssoid mites (Acari, Mesostigmata, Dermanyssoidea)

    OpenAIRE

    Valiente Moro C.; Chauve C.; Zenner L.

    2005-01-01

    Among transmissible diseases, vectorial diseases represent a major problem for public health. In the group of acarina, while ticks are the most commonly implicated vectors, other arthropods and notably Dermanyssoidea are also involved in the transmission of pathogenic agents. Since the role of this superfamily is at present largely unknown, we have reviewed the vectorial role of these mites in the appearance, survival and propagation of pathogens. Various authors have shown that Dermanyssoide...

  7. Relative humidity and activity patterns of Ixodes scapularis (Acari: Ixodidae)

    Science.gov (United States)

    Berger, K.A.; Ginsberg, Howard S.; Gonzalez, L.; Mather, T.N.

    2014-01-01

    Laboratory studies have shown clear relationships between relative humidity (RH) and the activity and survival of Ixodes scapularis Say (blacklegged tick). However, field studies have produced conflicting results. We examined this relationship using weekly tick count totals and hourly RH observations at three field sites, stratified by latitude, within the state of Rhode Island. Records of nymphal tick abundance were compared with several RH-related variables (e.g., RH at time of sampling and mean weekly daytime RH). In total, 825 nymphs were sampled in 2009, a year of greater precipitation, with a weighted average leaf litter RH recorded at time of sampling of 85.22%. Alternatively, 649 nymphs were collected in 2010, a year of relatively low precipitation, and a weighted average RH recorded at time of sampling was 75.51%. Negative binomial regression analysis of tick count totals identified cumulative hours <82% RH threshold as a significant factor observed in both years (2009: P = 0.0037; 2010: P < 0.0001). Mean weekly daytime RH did not significantly predict tick activity in either year. However, mean weekly daytime RH recorded with 1-wk lag before sample date was a significant variable (P = 0.0016) in 2010. These results suggest a lag effect between moisture availability and patterns of tick activity and abundance. Differences in the relative importance of each RH variable between years may have been due to abnormally wet summer conditions in 2009.

  8. Oribatid mites from the Vohimana Reserve, Madagascar (Acari: Oribatida, II

    Directory of Open Access Journals (Sweden)

    Mahunka, S.

    2009-11-01

    Full Text Available Further studies on the oribatid species collected from the Vohimana Reserve (Madagascar are presented. Altogether 13 species are listed, of them two represent new genera (Rugocepheus gen. nov. and Madabelba gen. nov., furthermore seven species are new to science. The other six species were earlier mentioned from different regions of the island, they are however little known.

  9. Uropodina mites (Acari: Mesostigmata from agricultural areas of Ecuador

    Directory of Open Access Journals (Sweden)

    Kontschán, J.

    2016-06-01

    Full Text Available Soil and leaf-litter samples of several agroecosystems (banana, cacao, coffee, and Monterey pine plantations in Ecuador were investigated regarding soil dwelling Uropodina. Short notes are given on the plantations and on the recorded mite species with description of a species new to science; Clivosurella zicsii sp. nov. Furthermore, diagnosis of the genus Clivosurella Hirschmann, 1979 is presented with a new key to the known species.

  10. Redefinition of the genus Triophtydeus Thor, 1932 (Acari: Actinedida)

    OpenAIRE

    André, H.M.

    1985-01-01

    The genus Triophtydeus Thor, 1932 is redefined from the study of the type-species, T. triophthalmus (Oudemans, 1929). The genus Metatriophtydeus André, 1980 is a junior synonym of Triophtydeus. Species belonging or likely to belong to the genus Triophtydeus are listed and generic and specific characters are discussed.

  11. Reproductive bionomics of the soft tick, Ornithodoros turicata (Acari: Argasidae).

    Science.gov (United States)

    Phillips, J S; Adeyeye, O A

    1996-07-01

    The effects of different temperatures and relative humidities (RHs) were tested on various reproductive parameters of Ornithodoros turicata, an argasid tick that inhabits gopher tortoise burrows in Florida, USA. The pre-oviposition, oviposition and incubation periods of the ticks decreased as temperature increased. These periods were also affected by the RH. The number of eggs oviposited was affected significantly by the combined effect of temperature and RH. Fewer eggs were laid by ticks in the 24 degrees C regimes and the 27 degrees C/95% RH regime compared to those in the other temperature/RH groups. There was an inverse relationship between the number of eggs oviposited and the percentage of hatched larvae that was correlated with the temperature and RH. Ticks reared at 27 degrees C/90% RH and 30 degrees C/90% RH laid more eggs than those reared in the other combinations of temperature and humidity but fewer larvae hatched from these eggs. The reproductive fitness index (RFI) values were highest in females held in the 24 degrees C groups and the 30 degrees C/95% RH group, although significantly more larvae hatched at the lower temperatures. The optimum reproductive conditions for O. turicata under laboratory conditions appear to be 24 degrees C and 90-95% RH. While mating occurred at all temperatures, none of the females laid eggs at 22 degrees C. The ticks may move preferentially to low temperatures when not feeding to remain above the critical equilibrium humidity and/or below the critical metabolic level necessary for prolonged survival. However, most female ticks oviposited after 45 days when moved to 27 degrees C/95% RH. Ornithodoros turicata females may have a limited capability to delay oviposition until an optimal microenvironment for egg deposition can be located in the burrow. PMID:8771770

  12. Dietary effects on body weight of predatory mites (Acari, Phytoseiidae).

    Science.gov (United States)

    Goleva, Irina; Rubio Cadena, Esteban C; Ranabhat, Nar B; Beckereit, Caroline; Zebitz, Claus P W

    2015-08-01

    Pollen is offered as alternative or supplementary food for predacious mites; however, it may vary in its nutritional value. Body weight appears a representative parameter to describe food quality. Thus, we assessed the body weight for adults of the generalist mites Amblyseius swirskii, Amblydromalus limonicus, and Neoseiulus cucumeris reared on 22, 12, and 6 pollen species, respectively. In addition, A. swirskii and A. limonicus was reared on codling moth eggs. In all mite species, female body weight was higher than that of males, ranging between 4.33 and 8.18 µg for A. swirskii, 2.56-6.53 µg for A. limonicus, and 4.66-5.92 µg for N. cucumeris. Male body weight ranged between 1.78 and 3.28 µg, 1.37-3.06 µg, and 2.73-3.03 µg, respectively. Nutritional quality of pollen was neither consistent among the mite species nor among sex, revealing superior quality of Quercus macranthera pollen for females of A. swirskii and Tulipa gesneriana pollen for males, Alnus incana pollen for females of A. limonicus and Aesculus hippocastanum pollen for males, and Ae. hippocastanum pollen for both sexes of N. cucumeris. The results are discussed against the background of known or putative pollen chemistry and mite's nutritional physiology. PMID:26014648

  13. Eriophyoid mites (Acari: Prostigmata: Eriophyidae) associated with Compositae in Iran.

    Science.gov (United States)

    Lotfollahi, Parisa; Irani-Nejad, Karim Haddad; Khanjani, Mohamad; Moghadam, Mohamad; De Lillo, Enrico

    2013-01-01

    Five species of eriophyoid mites were identified during surveys of mite fauna associated with plant species of the family Compositae from Southwest of East Azerbaijan province during 2010 and 2011. Two of them, Aceria virgatae n. sp. from Centaurea virgata Lam. and Aceria xeranthenzis n. sp. from Xeranthemumn squarrosum Boiss., were found to be new to science. No damage symptoms were observed on their host plants. Aceria xeranthemis n. sp. is the first eriophyoid collected from the plant genus Xeranthenun. Aculops centaureae (Farkas, 1960) from Centaurea albonitens Turrill and Aceria cichorii Petanović et al. 2000 from Cichorium intybus L. are new records for Iranian mite fauna. The deutogyne female of Aceria anthocoptes (Nalepa) was recorded for the first time in Iran, too. A key to the species collected on Compositae in Iran is given. PMID:26266306

  14. Listado de oribátidos (Acari, Oribatida de Túnez

    Directory of Open Access Journals (Sweden)

    Subías, L. S.

    2015-12-01

    Full Text Available The oribatid mites of several Tunisian soil samples were studied. 113 species were obtained, 95 of which are recorded for the first time from Tunisia. A systematic check-list with the 136 species known up to now is included, and their geographical distribution is given. Most of them, 77 (56%, have a typical Mediterranean distribution and 16 are recorded for the first time from North Africa.Se han estudiado los ácaros oribátidos de una serie de muestras de suelo de Túnez y se han identificado 113 especies, 95 de las cuales se citan por primera vez en Túnez. Se ha elaborado un listado sistemático en el que se incluyen las 136 especies conocidas hasta el momento y su distribución geográfica. La mayoría, 77 (56 %, presentan características típicamente mediterráneas, y 16 se citan por primera vez en el norte de África.

  15. Phytoseiid mites (Acari: Phytoseiidae) from Patagonia and Tierra del Fuego.

    Science.gov (United States)

    Ferragut, Francisco; Navia, Denise

    2015-01-01

    Predatory phytoseiid mites have been intensively studied and surveyed in the last decades because of their economic importance as biocontrol agents of agricultural pests. However, many regions of the world remain unexplored and the diversity of the family worldwide is still fragmentary. Up to date no phytoseiid species have been collected in the southernmost part of the Earth down to latitude 45º S. In this study Phytoseiidae were sampled from native vegetation in southern Argentina and Chile in the regions of Patagonia and Tierra del Fuego Island. Thirteen species were collected, five of which were previously described and eight, Chileseius australis n. sp., Neoseiulus mapuche n. sp., Typhlodromips valdivianus n. sp., T. fissuratus n. sp., Amblyseius grandiporus n. sp., A. caliginosus n. sp., Typhlodromus (Anthoseius) anomalos n. sp. and Metaseiulus parabrevicollis n. sp. are proposed as new to science and are described and diagnosed. PMID:26250248

  16. Vectorial role of some dermanyssoid mites (Acari, Mesostigmata, Dermanyssoidea).

    Science.gov (United States)

    Valiente Moro, C; Chauve, C; Zenner, L

    2005-06-01

    Among transmissible diseases, vectorial diseases represent a major problem for public health. In the group of acarina, while ticks are the most commonly implicated vectors, other arthropods and notably Dermanyssoidea are also involved in the transmission of pathogenic agents. Since the role of this superfamily is at present largely unknown, we have reviewed the vectorial role of these mites in the appearance, survival and propagation of pathogens. Various authors have shown that Dermanyssoidea are implicated in the transmission of both bacteria (Salmonella, Spirocheta, Rickettsia or Pasteurella) and viruses (equine encephalitis viruses, West Nile virus, Fowl pox virus, the virus causing Newcastle disease and tick borne encephalitis viruses or hantaviruses). Finally, some authors have also shown their role in the transmission of some protozoa and filaria. As the vectorial character of such mites has been more clearly demonstrated (Dermanyssus gallinae, Omithonyssus bacoti and Allodermanyssus sanguineus), it would be interesting to continue studies to better understand the role of this superfamily in the epidemiology of certain zoonoses. PMID:15991823

  17. Life cycle of Ornithodoros mimon (Acari: Argasidae) under laboratory conditions.

    Science.gov (United States)

    Landulfo, Gabriel Alves; Pevidor, Luisa Vianna; Dos Santos Sampaio, Janio; Luz, Hermes Ribeiro; Onofrio, Valeria Castilho; Faccini, João Luiz Horácio; Barros-Battesti, Darci Moraes

    2012-09-01

    Ornithodoros mimon Kohls et al. is an argasid tick, originally described from larvae collected on bats from Bolivia and Uruguay. In Brazil the species is aggressive to humans and animals. Nymphs and adults of O. mimon were collected from the roof of a residence in Araraquara, São Paulo, Brazil, whose residents were bitten by ticks. Once in the laboratory, they were fed on rabbits and maintained in biological oxygen demand incubator at 27 ± 1 °C and 90 ± 10 % relative humidity. The females, after mating, laid eggs that resulted in larvae that were identified by the original description and also by the paratypes examination (RML 50271-50274) deposited at the United State National Tick Collection, Georgia, GA, USA. The life cycle of this species was obtained through the acquisition of two generations of ticks (F1 and F2) in the laboratory using rodents and rabbits as hosts. The biological parameters of larva, nymph and adult stages of both generations were recorded from infestations of the laboratory hosts. Larvae showed a profile of feeding for days on the host, whereas the nymphs and adults fed only for few minutes. First nymphal instar (N1) molted to second nymphal instar (N2) without blood meal. The species life cycle was elucidated for the first time. PMID:22570058

  18. Can Euseius alatus DeLeon (Acari: Phytoseiidae) prey on Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut palm?; Pode Euseius alatus DeLeon (Acari: Phytoseiidae) predar Aceria guerreronis Keifer (Acari: Eriophyidae) em coqueiro?

    Energy Technology Data Exchange (ETDEWEB)

    Melo, Jose W. da S.; Domingos, Cleiton A.; Gondim Junior, Manoel G.C. [Universidade Federal Rural de Pernambuco (UFRPE), Recife, PE (Brazil). Dept. de Agronomia. Area de Fitossanidade]. E-mail: mguedes@depa.ufrpe.br; Moraes, Gilberto J. de [Universidade de Sao Paulo (USP), Piracicaba, SP (Brazil). Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Dept. de Entomologia, Fitopatologia e Zoologia Agricola]. E-mail: gjmoraes@carpa.ciagri.usp.br

    2009-01-15

    Mites of the genus Euseius are generally considered specialist as pollen feeders. Euseius alatus DeLeon is one of the six species of phytoseiid mites most commonly found on coconut plants in northeast Brazil associated with Aceria guerreronis Keifer. Although the morphology of E. alatus does not favor the exploitation of the meristematic area of the fruit inhabited by A. guerreronis, the predator may have some role in the control of this eriophyid during the dispersion process. The objective of this work was to evaluate the development and reproduction of E. alatus on the following diets: A. guerreronis, Ricinus communis pollen (Euphorbiaceae), and Tetranychus urticae Koch (Tetranychidae) + R. communis pollen + honey solution 10%. Euseius alatus developed slightly faster and had slightly higher oviposition rate when feeding on the diet composed of T. urticae + pollen + honey. However, life table parameters were very similar on all diets, suggesting that E. alatus may contribute in reducing the population of A. guerreronis in the field. (author)

  19. A revision of the Pheroliodidae, fam. n. (Acari: Oribatei

    Directory of Open Access Journals (Sweden)

    Adilson D. Paschoal

    1986-01-01

    Full Text Available The new family Pheroliodidae, herei nproposed, includes the following genera and species Pheroliodes Grandjean (in whose synonymy Pedrocortesia Hammer is placed, with the species: casa-branquensis, sp. n. (Brazil, São Paulo, Casa Branca, pellitus, sp. n. (Brazil, São Paulo, Piracicaba, nemoricultricis, sp. n. (Brazil, São Paulo, Piracicaba, wehnekei (Willmann (Guatemala, Venezuela, roblensis Covarrubias (Chile, mirabilis (Hammer, n. comb. (Argentina: Pedrocortesia elegans Hammer, P. intermedia Hammer, both from Peru, P. fissurata Balogh & Mahunka and P. inaequalis Balogh & Mahunka, both from Mongolia, P. franzi Balogh (Chad, P. africana Balogh (Kenya, P. vermicularis Balogh (New Guinea and P. sculptrata Aoki (Corea are considered incertae sedis; Lopholiodes, gen. n., includes the species micropunctinatum, sp. n., the type-species (Brazil, São Paulo, Anhumas and macropunctinatum, sp. n. (Brazil, São Paulo, Piracicaba: Octoliodes, gen n., includes the species leuteomarginatus (Hammer, n. comb., the type-species (New ealand and rotoruensis (Hammer, n. comb. (New Zealand: and Licnoliodes Grandjean, with the species: andrei Grandjean, type-species (Spain and Algeria, adminensis Grandjean, type-species (Spain and Algeria, adminensis Grandjean (Maroc, Algeria, Spain and apunctatus Mahunka (Greece.A nova família aqui descrita, Pheroliodidae, inclui os seguintes gêneros e espécies: Pheroliodes Grandjean (em cuja sinonímia vai incluído Pedrocortesia Hammer, com as seguintes espécies: casa-branquensis, sp. n. (Brasil, São Paulo, Casa Branca, pellitus, sp. n. (Brasil, São Paulo, Piracicaba, nemoricultricis, sp. n. (Brasil, São Paulo, Piracicaba, wehnekei (Willmann (Guatemala, Venezuela, roblensis Covarrubias (Chile, mirabilis (Hammer, n. comb. (Argentina: Pedrocortesia elegans Hammer, P. intermedia Hammer, ambas do Peru, P. fissurata Balogh & Mahunka (Mongólia, inaequalis Balogh & Mahunka (Mongólia, franzi Balogh (Chad, P. africana Balogh (Quênia, P. vermicularis Balogh (Nova Guiné e P. sculptrata Aoki (Coréia são consideradas incertae sedis: Lopholiodes, gen. n., inclui as espécies mícropunctatum, sp. n., espécie-tipo (Brasil, São Paulo, Anhumas e macropunctinatum. sp. n. (Brasil, São Paulo, Piracicaba: Octoliodes, gen. n., inclui as espécies luteomarginatus (Hammer, n. comb., a espécie-tipo (Nova elân da e rotoruensis (Hammer, n. comb. (Nova Zelândia: e Licnoliodes Grandjean, com as espécies: andrei Grandjean, espécie-tipo (Espanha e Argélia, adminensis Grandjean (Marrocos, Argélia, Espanha e apunctatus Mahunka (Grécia.

  20. Heavy metal sensitivity and bioconcentration in oribatid mites (Acari, Oribatida)

    Energy Technology Data Exchange (ETDEWEB)

    Skubala, Piotr, E-mail: piotr.skubala@us.edu.pl [Department of Ecology, University of Silesia, Bankowa 9, 40-007 Katowice (Poland); Zaleski, Tomasz [Department of Soil Science and Soil Protection, Agricultural University in Krakow, Mickiewicza 21, 31-120 Cracow (Poland)

    2012-01-01

    In this study we aimed to identify different reactions of oribatid species to heavy metal pollution and to measure concentrations of cadmium, zinc and copper in oribatid species sampled along a gradient. Oribatid mites were sampled seasonally during two years in five meadows located at different distances from the zinc smelter in the Olkusz District, southern Poland. Oribatids were shown to withstand critical metal concentration and established comparatively abundant and diverse communities. The highest abundance and species richness of oribatids were recorded in soils with moderate concentrations of heavy metals. Four different responses of oribatid species to heavy metal pollution were recognized. Heavy metals (Zn, Pb, Cd, Ni) and various physical (bulk density, field capacity, total porosity) and chemical (K{sub av}, P{sub av}, N, C, pH) factors were recognized as the structuring forces that influence the distribution of oribatid species. Analysis by atomic absorption spectrophotometry revealed large differences in metal body burdens among species. None of the species can be categorized as accumulators or non-accumulators of the heavy metals - the pattern depends on the metal. The process of bioconcentration of the toxic metal (regulated) and essential elements (accumulated) was generally different in the five oribatid species studied. - Highlights: Black-Right-Pointing-Pointer Responses of oribatid mites to metal contamination along a gradient in meadow soils were studied. Black-Right-Pointing-Pointer Small concentrations of heavy metals positively influenced the abundance of oribatid mites. Black-Right-Pointing-Pointer Four different responses of oribatid species to heavy metal pollution were recognised. Black-Right-Pointing-Pointer Bioaccumulation of the toxic metal and essential elements proceeded differently in oribatid species. Black-Right-Pointing-Pointer Five studied oribatid species were deconcentrators of cadmium.

  1. Widespread Rickettsia spp. Infections in Ticks (Acari: Ixodoidea) in Taiwan.

    Science.gov (United States)

    Kuo, Chi-Chien; Shu, Pei-Yun; Mu, Jung-Jung; Lee, Pei-Lung; Wu, Yin-Wen; Chung, Chien-Kung; Wang, Hsi-Chieh

    2015-09-01

    Ticks are second to mosquitoes as the most important disease vectors, and recent decades have witnessed the emergence of many novel tick-borne rickettsial diseases, but systematic surveys of ticks and tick-borne rickettsioses are generally lacking in Asia. We collected and identified ticks from small mammal hosts between 2006 and 2010 in different parts of Taiwan. Rickettsia spp. infections in ticks were identified by targeting ompB and gltA genes with nested polymerase chain reaction. In total, 2,732 ticks were collected from 1,356 small mammals. Rhipicephalus haemaphysaloides Supino (51.8% of total ticks), Haemaphysalis bandicota Hoogstraal & Kohls (28.0%), and Ixodes granulatus Supino (20.0%) were the most common tick species, and Rattus losea Swinhoe (44.7% of total ticks) and Bandicota indica Bechstein (39.9%) were the primary hosts. The average Rickettsia infective rate in 329 assayed ticks was 31.9% and eight Rickettsia spp. or closely related species were identified. This study shows that rickettsiae-infected ticks are widespread in Taiwan, with a high diversity of Rickettsia spp. circulating in the ticks. Because notifiable rickettsial diseases in Taiwan only include mite-borne scrub typhus and flea-borne murine typhus, more studies are warranted for a better understanding of the real extent of human risks to rickettsioses in Taiwan. PMID:26336223

  2. A supplementary description of Brevipalpus californicus (Acari: Trombidiformes: Tenuipalpidae

    Directory of Open Access Journals (Sweden)

    Mohammad Raissi Ardali

    2015-10-01

    Full Text Available The false spider mite Brevipalpus californicus from the family Tenuipalpidae was collected from Caucasian alnus, White willow, Persian raspberry and a wild Chrysanthemum bush in Mazandaran province. This species is reported as a new record to the false spider mites-fauna of Iran here. Reviewing literatures revealed that it was briefly described in the original paper without any measures. So, a completed description is presented based on the Iranian specimens and different body segments are drawn for B. californicus. In addition, the above plants are new host records for B. californicus.

  3. Uropodina mites (Acari collected in Costa Rica, I

    Directory of Open Access Journals (Sweden)

    Kontschán, J.

    2009-06-01

    Full Text Available In this paper six Uropodina species are presented from Costa Rica. Two of them, Oplitis pecki Hirschmann, 1991 and Uroobovella faceta Hiramatsu & Hirschmann, 1978 are already known, however the other four species; Rotundabaloghia unisetosa, Trigonuropoda caudosetosa, Brasiluropoda costaricana and Cyllibula forroi spp. nov. proved to be new to science. Oplitis peckisimilis Hirschmann, 1991 and O. ellipsioides Hirschmann, 1991 are synonymized with O. pecki.

  4. New and rare Rotundabaloghia species (Acari: Uropodina from the tropics

    Directory of Open Access Journals (Sweden)

    Kontschán, J.

    2008-11-01

    Full Text Available Descriptions of eight new and seven known pecies of the uropodine genus Rotundabaloghia Hirschmann, 1975 are given from New Guinea, South Asia, South America and West Africa. Original descriptions and drawings as well as scanning micrographs are provided.

  5. Hypopi (Acari: Hypoderatidae) of the wood stork (Aves: Ciconiiformes: Ciconiidae)

    Science.gov (United States)

    Pence, Danny B.; Thomas, N.J.

    1995-01-01

    A new species is described and additional host records are presented for 2 other species of deutonymphs of the family Hypoderatidae from the subcutaneous adipose tissues of the wood stork, Mycteria americana L. Phalacrodectes (Phalacrodectes) mycteria n. sp. appears to share affinities with species from both pelicaniform and ciconiiform hosts, but it most closely resembles P. (P.) punctatissimus (Černý) Pence & Courtney from pelicans in idiosomal chaetotaxy, cutdcular sclerotization, and posteriorly divergent, widely separated genital openings. The new species differs from this and other species of the genus by its small size, the degree of separation of the genital openings with papillae, no secondary sclerotization in the perigenital area or surrounding the genital openings, and the long filiform setae s and w on genu III. There was a mixed infection of Neottialges kutzeri Fain and N. mycteriae Pence in all of 7 wood storks examined from Florida and Georgia; P. (P) mycteria was found in 4 of these hosts. This is the 7th species described as a deutonymph in the genus Phalacrodectes. The apparent close affinity of P. (P.) mycteria with P. (P.) punctatissimus and allied species from pelicaniform versus ciconiiform birds appears to be inconsistent with the established host-parasite relationships based on classical avian taxonomic relationships. However, this apparent affinity may be more reflective of the close relationships between the families of pelicans, ibises and spoonbills, and storks as recently proposed by DNA-DNA hybridization studies.

  6. Heavy metal sensitivity and bioconcentration in oribatid mites (Acari, Oribatida)

    International Nuclear Information System (INIS)

    In this study we aimed to identify different reactions of oribatid species to heavy metal pollution and to measure concentrations of cadmium, zinc and copper in oribatid species sampled along a gradient. Oribatid mites were sampled seasonally during two years in five meadows located at different distances from the zinc smelter in the Olkusz District, southern Poland. Oribatids were shown to withstand critical metal concentration and established comparatively abundant and diverse communities. The highest abundance and species richness of oribatids were recorded in soils with moderate concentrations of heavy metals. Four different responses of oribatid species to heavy metal pollution were recognized. Heavy metals (Zn, Pb, Cd, Ni) and various physical (bulk density, field capacity, total porosity) and chemical (Kav, Pav, N, C, pH) factors were recognized as the structuring forces that influence the distribution of oribatid species. Analysis by atomic absorption spectrophotometry revealed large differences in metal body burdens among species. None of the species can be categorized as accumulators or non-accumulators of the heavy metals — the pattern depends on the metal. The process of bioconcentration of the toxic metal (regulated) and essential elements (accumulated) was generally different in the five oribatid species studied. - Highlights: ► Responses of oribatid mites to metal contamination along a gradient in meadow soils were studied. Small concentrations of heavy metals positively influenced the abundance of oribatid mites. ► Four different responses of oribatid species to heavy metal pollution were recognised. ► Bioaccumulation of the toxic metal and essential elements proceeded differently in oribatid species. ► Five studied oribatid species were deconcentrators of cadmium.

  7. Three eriophyoid mite species (Acari: Eriophyoidea: Eriophyidae) from Iran.

    Science.gov (United States)

    Xue, Xiao-Feng; Sadeghi, Hussein; Honarmand, Arash

    2016-01-01

    Three mite species of the family Eriophyidae from Iran are described and illustrated. They are: Tegolophus marrubiumer sp. nov. on Marrubium vulgare L. (Lamiaceae); Phyllocoptes sp. cf. balasi Farkas, 1962 on Sanguisorba minor Scop. subsp. minor (Rosaceae) and Aceria fasciculifolis sp. nov. on Astragalus fasciculifolius Boiss. (Fabaceae). Both new species described herein are vagrants on their respective host plants. PMID:27395681

  8. Primer registro de Ixodes cookei (Acari: Ixodidae) para México First record of Ixodes cookei (Acari: Ixodidae) in Mexico

    OpenAIRE

    Griselda Montiel-Parra; Helxine Fuentes-Moreno; Margarita Vargas

    2007-01-01

    En este estudio se aportan los primeros datos de la garrapata Ixodes cookei Packard, 1869 en México. Un macho, 7 larvas y 15 ninfas se recolectaron en los estados de Nuevo León y Veracruz. Además, se registra al cacomixtle Bassariscus astutus como un nuevo huésped.The presence of Ixodes cookei Packard, 1869 is documented for the first time in Mexico, based on one male, 7 larvae and 15 nymphs collected in Veracruz and Nuevo Leon. Additionally, cacomixtle (Bassariscus astutus) is presented as a...

  9. Primer registro de Ixodes cookei (Acari: Ixodidae para México First record of Ixodes cookei (Acari: Ixodidae in Mexico

    Directory of Open Access Journals (Sweden)

    Griselda Montiel-Parra

    2007-06-01

    Full Text Available En este estudio se aportan los primeros datos de la garrapata Ixodes cookei Packard, 1869 en México. Un macho, 7 larvas y 15 ninfas se recolectaron en los estados de Nuevo León y Veracruz. Además, se registra al cacomixtle Bassariscus astutus como un nuevo huésped.The presence of Ixodes cookei Packard, 1869 is documented for the first time in Mexico, based on one male, 7 larvae and 15 nymphs collected in Veracruz and Nuevo Leon. Additionally, cacomixtle (Bassariscus astutus is presented as a new host record.

  10. Can Euseius alatus DeLeon (Acari: Phytoseiidae) prey on Aceria guerreronis Keifer (Acari: Eriophyidae) in coconut palm?

    International Nuclear Information System (INIS)

    Mites of the genus Euseius are generally considered specialist as pollen feeders. Euseius alatus DeLeon is one of the six species of phytoseiid mites most commonly found on coconut plants in northeast Brazil associated with Aceria guerreronis Keifer. Although the morphology of E. alatus does not favor the exploitation of the meristematic area of the fruit inhabited by A. guerreronis, the predator may have some role in the control of this eriophyid during the dispersion process. The objective of this work was to evaluate the development and reproduction of E. alatus on the following diets: A. guerreronis, Ricinus communis pollen (Euphorbiaceae), and Tetranychus urticae Koch (Tetranychidae) + R. communis pollen + honey solution 10%. Euseius alatus developed slightly faster and had slightly higher oviposition rate when feeding on the diet composed of T. urticae + pollen + honey. However, life table parameters were very similar on all diets, suggesting that E. alatus may contribute in reducing the population of A. guerreronis in the field. (author)

  11. Control de Rhipicephalus (Boophilus microplus (Acari: Ixodidae con extractos vegetales Control of Rhipicephalus (Boophilus microplus (Acari: Ixodidae with vegetable extracts

    Directory of Open Access Journals (Sweden)

    SÔNIA MARIA FORTI BROGLIO MICHELETTI

    2009-12-01

    Full Text Available Se evaluó la eficiencia de varios extractos vegetales como controladores de la garrapata Rhipicephalus (Boophilus microplus en condiciones de laboratorio. Hembras ingurgitadas se recolectaron de bovinos y se aislaron en cajas de petri. Se emplearon extractos orgánicos alcohólicos al 1% (p/v de semillas de Annona muricata (Annonaceae, flores de Syzygium malaccensis (Myrtaceae, hojas de Cymbopogon citratus (Poaceae, hojas de Azadirachta indica (Meliaceae y extracto hexánico de semillas de A. indica. El testigo consistió en hembras sin tratar y tratadas con agua destilada y esterilizada y dimetilsulfóxido (DMSO a una concentración de 1%. El extracto de semillas de A. muricata mostró tener mayor poder acaricida, con 100% de eficiencia, seguido de los extractos de flores de S. malaccensis (75% y 57,25% y semillas de A. indica (65% y 38,50%. Hubo 100% en la reducción de la eclosión de las larvas nacidas a partir de hembras tratadas con extracto de semillas de A. muricata.The efficacy of various plant extracts in the control of Rhipicephalus (Boophilus microplus was evaluated in the laboratory. Engorged females were collected from cattle and were isolated in Petri dishes. Organic alcoholic extracts at 1% (weight/volume were used from seeds of Annona muricata (Annonaceae, flowers of Syzygium malaccensis (Myrtaceae, leaves of Cymbopogon citratus (Poaceae, leaves of Azadirachta indica (Meliaceae and hexane extract 1% (weight/volume of A. indica seeds. The control groups consisted of females either untreated or treated with distilled and sterile water and dimethylsulfoxide (DMSO at a concentration of 1%. The extract of A. muricata seeds showed the highest acaricide power, with 100% efficacy, followed by flower extracts of S. malaccensis (75% and 57.25% and seeds of A. indica (65% and 38.50%. There was a 100% reduction in the eclosion of larvae from eggs of females treated with the seed extract of A. muricata.

  12. Ocorrência de Brevipalpus phoenicis (Geijskes (Acari, Tenuipalpidae, Tetranychus urticae (Koch (Acari, Tetranychidae e Polyphagotarsonemus latus (Banks (Acari, Tarsonemidae sobre folhas de Ipomoea cairica (Linnaeus Sweet (Solanales, Convolvulaceae Occurrence of Brevipalpus phoenicis (Geijskes (Acari, Tenuipalpidae, Tetranychus urticae (Koch (Acari, Tetranychidae and Polyphagotarsonemus latus (Banks (Acari, Tarsonemidae on leaves of I. cairica (Linnaeus Sweet (Solanales, Convolvulaceae

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    Ozana M. de A. Maia

    2006-09-01

    Full Text Available A ocorrência de três espécies acarinas fitófagas é relatada pela primeira vez sobre folhas de Ipomoea cairica. As espécies Brevipalpus phoenicis (Geijskes, Tetranychus urticae (Koch e Polyphagotarsonemus latus (Banks, foram coletadas sobre folhas de I. cairica nas imediações da Universidade Federal do Paraná, Curitiba, Paraná, Brasil, em 20 de janeiro de 2005.The first occurrence of three phytophagus mites on Ipomoea cairica, is reported. The species Brevipalpus phoenicis (Geijskes, Tetranychus urticae (Koch and Polyphagotarsonemus latus (Banks were caught on leaves of I. cairica, around Universidade Federal do Paraná, Curitiba, Paraná, Brazil, in January 20th, 2005.

  13. Toxicidade diferencial de agrotóxicos utilizados em citros para Neoseiulus californicus, Euseius concordis e Brevipalpus phoenicis

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    Marcos Zatti da Silva

    2011-01-01

    Full Text Available Brevipalpus phoenicis (Geijskes (Acari: Tenuipalpidae é considerada uma das principais pragas em citros no Brasil, devido à transmissão do vírus da leprose dos citros e à necessidade de frequentes aplicações de acaricidas para seu controle. Assim, objetivou-se comparar a toxicidade dos principais agrotóxicos utilizados em citros no Brasil, sobre populações de B. phoenicis e de ácaros predadores das espécies Neoseiuluscalifornicus (McGregor e Euseius concordis (Chant (Acari: Phytoseiidae. Foram avaliadas duas populações de E. concordis: uma procedente de Jaboticabal (SP e outra de Descalvado (SP. Arenas de folhas (para fitoseídeos ou frutos (para B. phoenicis de Citrus sinensis Osbeck (L. cv. Pera, contendo 25 fêmeas adultas de cada espécie foram pulverizadas em torre de Potter. As avaliações de mortalidade foram realizadas 72 horas após a aplicação. Foram utilizadas 4 a 6 concentrações de cada produto (abamectina, acefato, azociclotina, bifentrina, clorfenapir, dicofol, dinocape, óxido de fembutatina, propargito e piridabem para a obtenção das curvas de concentração-resposta. Abamectina, azociclotina, clorfenapir, dicofol, dinocape, óxido de fembutatin, propargito e piridabem foram altamente tóxicos a B. phoenicis, com valores de CL90 iguais ou inferiores aos das concentrações recomendadas desses produtos. N. californicus foi mais tolerante a bifentrina, propargito, óxido de fembutatina e dinocape que B. phoenicis e E. concordis (ambas as populações. Esses acaricidas tiveram baixa toxicidade aos adultos de N. californicus, para o qual as CL50 foram pelo menos seis vezes maiores que suas concentrações recomendadas. Acefato foi extremamente tóxico a E. concordis, mas inócuo a adultos de N. californicus. A população de E. concordis de Jaboticabal foi mais resistente que a de Descalvado a azociclotina, bifentrina, clorfenapir, dicofol e propargito.

  14. Typhlodromus pyri and Euseius finlandicus (Acari: Phytoseiidae) as potential biocontrol agents against spider mites (Acari: Tetranychidae) inhabiting willows: laboratory studies on predator development and reproduction on four diets.

    Science.gov (United States)

    Puchalska, Ewa K; Kozak, Marcin

    2016-01-01

    Typhlodromus pyri Scheuten and Euseius finlandicus (Oudemans) are important predators of phytophagous mites. The present laboratory study aimed to determine whether both species can develop and reach maturity feeding on spider mites occurring on willows, i.e., Schizotetranychus schizopus (Zacher), Schizotetranychus garmani Pritchard & Baker, and Tetranychus urticae Koch, and on Brassica napus L. pollen. The predators' development, reproduction and demographic parameters were significantly affected by diet. The data suggest that rape pollen can be useful in mass rearing of E. finlandicus but is completely unsuitable as alternative food for T. pyri. Short development time and high values of population parameters achieved by T. pyri feeding on larvae and protonymphs of S. schizopus and by E. finlandicus feeding on juvenile stages of S. garmani indicate great suitability of these preys as food for the phytoseiids, and make both predatory species promising biocontrol agents in spider mite control on willows. PMID:26530991

  15. A gallery of the key characters to ease identification of Dermanyssus gallinae (Acari: Gamasida: Dermanyssidae and allow differentiation from Ornithonyssus sylviarum (Acari: Gamasida: Macronyssidae

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    Di Palma Antonella

    2012-05-01

    Full Text Available Abstract Background Dermanyssus gallinae (poultry red mite is a major threat for the poultry industry and is of significant interest for public health. Identification of D. gallinae can be difficult for scientists not familiar with mite morphology and terminology especially when trying to use identification keys. Moreover, this species may easily be confused with another dermanyssoid mite, Ornithonyssus sylviarum (northern fowl mite, which often shares the same hosts and environment. Methods Specimens of D. gallinae were collected at poultry farms in the Puglia and performed for light and scanning electron microscopy observations, identification and micrographs. Moreover specimens of O. sylviarum were collected separately macerated and mounted on slides for light microscopy observations, identification and pictures. Results The micrographs used in this study, based on LM and SEM observations, highlight the following important identifying characters of D. gallinae: the prominent shoulders of the dorsal shield and the jagged edges of the shield reticulations, the position of setae j1, s1 and the epigynal pores, and the presence on tibia IV pl of one seta. Additional micrographs highlighting the shape of the dorsal (abruptly narrowed posteriorly and epigynal (narrowly rounded posteriorly shields and the chelicera (elongate, with distinct digits of O. sylviarum enable its differentiation from D.gallinae. Conclusion The photographic support provided here (both LM and SEM pictures can be considered a practical tool for scientists who are not well acquainted with the morphology of D.gallinae, and who are involved with classical and molecular systematics, veterinary and human health aspects of poultry red mites.

  16. Acaricidal activity of the essential oils from Eucalyptus citriodora and Cymbopogon nardus on larvae of Amblyomma cajennense (Acari: Ixodidae) and Anocentor nitens (Acari: Ixodidae).

    Science.gov (United States)

    Clemente, Mateus Aparecido; de Oliveira Monteiro, Caio Márcio; Scoralik, Márcio Goldner; Gomes, Fernando Teixeira; de Azevedo Prata, Márcia Cristina; Daemon, Erik

    2010-09-01

    The present study evaluated the acaricidal activity of essential oils from Eucalyptus citriodora and Cymbopogon nardus on non-engorged larvae of Amblyomma cajennense and Anocentor nitens. In order to carry out the study, six groups were formed, each concentration being a treatment (6.25%, 12.5%, 25%, and 50%, respectively) and also with the creation of a control group (distilled water) and a positive control (Deltametrine). For each treatment, approximately 100 larvae of these ticks were placed onto filter papers (2 x 2 cm) impregnated with the concentrations used to test. Next, the envelopes were closed bearing inside the filter paper with measurements of 6 x 6 cm. For each group, six repetitions were performed, and after 24 h live and dead larvae were counted. This procedure was carried out for two essential oils on the two species of ticks. For A. cajennense, the acaricide efficacy of E. citriodora oil was of 10.8%, 35.3%, 34.5%, and 53.1%, whereas the efficacy of C. nardus was of 0.0%, 0.0%, 0.0%, and 61.1% at concentrations of 6.25%, 12.5%, 25.0%, and 50.0%, respectively. In relation to A. nitens, the acaricide efficacy of E. citriodora oil was of 20.1%, 84.5%, 89.2%, and 100.0%, whereas the efficacy of C. nardus was of 0.0%, 90.8%, 100.0%, and 100.0% at concentrations of 6.25%, 12.5%, 25.0%, and 50.0%, respectively. The results indicate that the essential oils tested showed a promising acaricidal activity mainly on A. nitens larvae. PMID:20640444

  17. Rhipicephalus sanguineus (Acari: Ixodidae, the brown dog tick, parasitizing humans in Brazil Rhipicephalus sanguineus (Acari: Ixodidae, o carrapato vermelho do cão, parasitando humanos no Brasil

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    Filipe Dantas-Torres

    2006-02-01

    Full Text Available The objective of this paper is to describe four cases of human parasitism by Rhipicephalus sanguineus (Latrielle in Brazil. During an investigation regarding the species of ectoparasites of domestic dogs from the metropolitan region of Recife, Pernambuco state, four dog owners were found to be parasitized by ticks. The ticks were collected from these individuals and their dogs. All the ticks were identified as Rhipicephalus sanguineus . These are, to our knowledge, the first four cases of human parasitism by this tick species in Brazil. The possible implications of this finding are discussed here.O objetivo deste artigo é descrever quatro casos de parasitismo humano por Rhipicephalus sanguineus (Latrielle no Brasil. Durante uma investigação sobre as espécies de ectoparasitas de cães domésticos provenientes da Região Metropolitana de Recife, Pernambuco, quatro proprietários de cães foram encontrados parasitados por carrapatos. Foram coletados carrapatos dos indivíduos e de seus cães. Todos os carrapatos foram identificados como Rhipicephalus sanguineus, sendo, portanto, descritos os primeiros quatro casos de parasitismo humano por esta espécie de carrapato, no Brasil. Neste trabalho, são discutidas as possíveis implicações epidemiológicas deste achado.

  18. Distribuição espacial e plano de amostragem de Calacarus heveae (Acari em seringueira Spatial distribution and sampling plan for Calacarus heveae (Acari on rubber trees

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    Noeli Juarez Ferla

    2007-12-01

    Full Text Available Calacarus heveae Feres, 1992 é um eriofídeo descrito de espécimes coletados em plantas de seringueira (Hevea brasiliensis, Euphorbiaceae na região noroeste do Estado de São Paulo. Esse ácaro prefere a face adaxial dos folíolos e pode causar a perda do brilho, amarelecimento, bronzeamento dessa região e a subseqüente queda prematura das folhas. O objetivo deste trabalho foi analisar a distribuição de C. heveae em seringueira, selecionar a unidade de amostragem mais representativa e desenvolver um plano de amostragem para o estudo de sua flutuação populacional. O trabalho foi conduzido com os clones PB 260 e IAN 873, respectivamente nos municípios de Itiquira e de Pontes e Lacerda, ambos no Mato Grosso. Em Itiquira, diferenças significativas foram observadas em quatro ocasiões em relação ao número médio de ácaros por folha nos diferentes estratos das plantas. Nas amostragens realizadas em Pontes e Lacerda, nenhuma diferença significativa foi encontrada entre os estratos em relação àquele parâmetro. Apenas em Itiquira, em uma ocasião de amostragem, foi verificada diferença entre os três estratos, em relação à proporção de folhas infestadas. Nenhuma diferença significativa foi verificada em relação ao número médio de ácaros por folha e proporção de folhas infestadas por C. heveae a diferentes distâncias da periferia da copa. Calacarus heveae exibe distribuição agregada no campo. Para estimar a densidade de C. heveae, um plano numérico e um plano binomial de amostragem foram desenvolvidos.Calacarus heveae Feres, 1992 (Eriophyidae is a mite described from specimens collected on rubber tree (Hevea brasiliensis, Euphorbiaceae in the northwest region of the state of São Paulo. This mite prefers the adaxial face of the folioles which it can turn dry, yellowish and brownish; it can also cause leaf fall. The aim of this work was to analyze the distribution of C. heveae on rubber trees, to select the most representative sampling unit and to develop a sampling plan to determine the populational fluctuation. This study was conducted with clones PB 260 and IAN 873, in Itiquira and Pontes e Lacerda, respectively, both in the state of Mato Grosso. In Itiquira, significant differences were observed in four occasions in relation to the average number of mites per leaf in the different plant strata. In the samplings carried out in Pontes e Lacerda, no significant differences were observed between strata in relation to that parameter. Only in Itiquira, in one occasion, a significant difference between strata was verified in relation to the proportion of infested leaves. No significant differences were verified in relation to the average number of mites per leaf and proportion of leaves infested by C. heveae at different depths in the canopy. Calacarus heveae exhibits aggregated distribution in the field. To estimate the density of C. heveae, numeric and sampling plans were developed.

  19. Larvicidal potencial of Sapindus saponaria (Sapindaceae against Rhipicephalus sanguineus (Latreille, 1806 (Acari: Ixodidae Potencial larvicida de Sapindus saponaria (Sapindaceae sobre Rhipicephalus sanguineus (Latreille, 1806 (Acari: Ixodidae

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    F.F. Fernandes

    2007-02-01

    Full Text Available The larvicidal potential of the crude ethanolic extracts (CEE of the stem peel of Sapindus saponaria was evaluated against Rhipicephalus sanguineus. Lethal concentrations (LC, were calculated by preparing CEE solutions at different concentrations in distilled water. Larvae fasted for 14-21 days were utilized in the bioassays, after incubation of engorged females collected from infested environments frequented by dogs in several neighborhoods of Goiânia, GO. Bioassays were performed in a specially constructed biological chamber for testing botanical acaricides, acclimatized to 27±1ºC, RH>80%. The larvae were counted on filter paper envelopes impregnated with the solutions or distilled water and larval mortality observed after 48h. S. saponaria showed good larvicidal activity (LC50 and LC99 of 1994 and 3922ppm, respectively and the results demonstrated its potential as a botanical acaricide and an alternative control measure for R. sanguineus.Avaliou-se a potencialidade larvicida do extrato-bruto etanólico (EBE da casca do caule de Sapindus saponaria sobre Rhipicephalus sanguineus. Para o cálculo das concentrações letais (CL foram preparadas soluções com diferentes concentrações do EBE dissolvido em água destilada. Foram utilizadas larvas em jejum com 14 a 21 dias, obtidas pela incubação de teleóginas, coletadas em ambientes infestados, freqüentados por cães de vários bairros de Goiânia. Os bioensaios foram realizados em uma câmara biológica para testes com acaricidas botânicos, climatizada a 27±1ºC e UR>80%. As larvas foram contidas em envelopes de papel filtro impregnados com as soluções (grupo teste ou com água destilada (grupo-controle e a mortalidade larval foi observada após 48h. S. saponaria demonstrou atividade larvicida satisfatória (CL50 e CL99 respectivamente de 1994 e 3922ppm e os resultados demonstraram seu potencial como acaricida botânico e medida alternativa para o controle de R. sanguineus.

  20. Environmentally associated ticks (Acari: Ixodidae in Campo Grande, Mato Grosso do Sul, Brazil Carrapatos (Acari: Ixodidae associados com o ambiente em Campo Grande, Mato Grosso do Sul, Brasil

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    Marcos Valério Garcia

    2013-03-01

    Full Text Available Herein, we report tick species found on wild and domestic animals and in the environment during a one-year sampling period at the Brazilian Farming Research Company beef cattle unit (Embrapa Beef Cattle, which is located within the urban area of Campo Grande, Mato Grosso do Sul, Brazil. From 55 wild hosts including six different species (Nasua nasua, Cebus spp., Cerdocyon thous, Myrmecophaga tridactyla, Tamandua tetradactyla and Dasyprocta aguti, 323 ticks were collected. Amblyomma ovale ticks were found solely on coatis, and Amblyomma nodosum was identified solely on anteaters. No ticks were found on capuchin monkeys. However, Amblyomma cajennense was found on all parasitized host species with the exception of capuchin monkeys. Giant anteaters displayed the highest infestation abundance, with a mean of 53 ticks∕animal. Environmental sampling yielded 166 adult A. cajennense ticks. The tick species found on domestic animals (Rhipicephalus (Boophilus microplus, R. sanguineus, Dermacentor nitens and A. cajennense were those typically found on these hosts in Brazil. The most prevalent tick species, A. cajennense, was found on both wild and domestic animals and was also prevalent in the environment. Thus, this tick species is the primary vector that allows pathogens to bridge wild and domestic animals in the Cerrado.Neste trabalho são descritas as espécies de carrapatos de animais selvagens e domésticos e do ambiente coletados por um ano na EMBRAPA Gado de Corte localizado na área urbana de Campo Grande, Mato Grosso do Sul, Brasil. Dos 55 hospedeiros selvagens de seis espécies diferentes (Nasua nasua, Cebus spp., Cerdocyon thous, Myrmecophaga tridactyla, Tamandua tetradactyla e Dasyprocta aguti foram coletados 323 carrapatos. Amblyomma ovale foi encontrado apenas em quatis e Amblyomma nodosum apenas sobre tamanduás. Nenhum carrapato foi encontrado sobre macacos-prego. Por outro lado, Amblyomma cajennense foi encontrado em todos os hospedeiros com exceção dos macacos-pregos. A maior abundancia de infestação foi aquela em tamanduás-bandeira com média de 53 carrapatos∕animal. No ambiente foram capturados 166 carrapatos, todos da espécie A. cajennense. As espécies de carrapatos em animais domésticos (Rhipicephalus (Boophilus microplus, Rhipicephalus sanguineus, Dermacentor nitens e A. cajennense foram aquelas características nestes hospedeiros no Brasil. De forma geral a espécie de carrapato A. cajennense foi a mais prevalente sendo encontrada em animais domésticos e selvagens bem como no ambiente. Portanto, esta é a principal espécie de vetor a estabelecer uma ponte para bioagentes patogênicos entre animais domésticos e selvagens.

  1. Selection of Entomopathogenic Fungi to Control Varroa destructor (Acari: Varroidae Selección de Hongos Entomopatógenos para el Control de Varroa destructor (Acari: Varroidae

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    Marta Rodríguez

    2009-12-01

    Full Text Available The aim of this work was select entomopathogenic fungi tolerant to temperatures inside the brood area of honey bees (Apis mellifera for to control Varroa destructor. For this purpose, 50 Beauveria bassiana (Balsamo Vuillemin and 48 Metarhizium anisopliae (Metschn. Sorokin isolates were evaluated at 30 and 35 ºC. For each isolate, colony discs of 5 mm with mycelium were placed in the center of a Petri dish with Sabouraud dextrose agar (SDA medium. The dishes were incubated at 30 and 35 °C, without light. Radial growth of each colony was measured daily. All the B. bassiana and M. anisopliae isolates presented a lineal growth rate at a temperature of 30 ºC. However, at 35 ºC, most of the isolates did not grow, except three B. bassiana and 14 M. anisopliae isolates (P El objetivo de este trabajo fue seleccionar hongos entomopatógenos tolerantes a las temperaturas del nido de cría de las abejas (Apis mellifera, para ser utilizados en el control de Varroa destructor. Se evaluaron 50 aislamientos de Beauveria bassiana (Balsamo Vuillemin y 48 de Metarhizium anisopliae (Metschn. Sorokin a temperaturas de 30 y 35 ºC. Discos de agar de 5 mm de diámetro con micelio de colonias de cada aislamiento, se depositaron en el centro de placas Petri con medio agar Sabouraud dextrosa (ASD. Las placas fueron incubadas a 30 y 35 °C y oscuridad y diariamente se midió el radio de cada colonia. Todos los aislamientos de B. bassiana y M. anisopliae var. anisopliae presentaron una tendencia lineal a través del tiempo a temperaturas de incubación de 30 °C. A 35 °C la mayoría de los aislamientos no crecieron, excepto tres aislamientos de B. bassiana y 14 de M. anisopliae (p < 0,001. Estos aislamientos fueron seleccionados para realizar pruebas de patogenicidad sobre V. destructor, aplicando una suspensión de 10(7 conidias mL-1. El aislamiento más efectivo fue Qu-M845 de M. anisopliae (p = 0,0033, produjo una mortalidad de 85%. La capacidad patogénica de este aislamiento en V. destructor y su tolerancia a las condiciones ambientales a las que sería expuesto, permite considerar esta cepa como una alternativa de control para esta plaga.

  2. Nuevos hospedadores para las garrapatas Amblyomma tigrinum y Rhipicephalus sanguineus (Acari: Ixodidae en Chile New hosts for the ticks Amblyomma tigrinum and Rhipicephalus sanguineus (Acari: Ixodidae in Chile

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    D González-Acuña

    2006-01-01

    Full Text Available Se registran, por primera vez en Chile, ninfas de garrapata café del perro (Rhipicephalus sanguineus parasitando dos ejemplares de cabras (Capra hircus y adultos (un macho y una hembra gravida de la garrapata de listas blancas (Amblyomma tigrinum parasitando a un bovino (Bos taurus. La importancia de los presentes reportes, hechos en la provincia de Ñuble, son discutidos.For the first time in Chile, cases of nymphs of the brown dog tick (Rhipicephalus sanguineus being found on two goats (Capra hircus, and adult (one male and a gravid female white stripped ticks (Amblyomma tigrinum being found on cattle (Bos taurus have been reported. The aim of this review is to discuss the importance of these findings.

  3. Garrapatas (Acari: Ixodidae en perros de la ciudad de Concepción, Chile Ticks (Acari: Ixodidae on dogs in Concepción city, Chile

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    L. MUÑOZ

    2002-01-01

    Full Text Available Con la finalidad de determinar las especies de garrapatas que parasitan a los perros de la ciudad de Concepción, se extrajeron 137 garrapatas desde perros de ocho clínicas veterinarias de cuatro comunas de la ciudad de Concepción. Los ejemplares encontradas fueron observados mediante lupa estereoscópica y algunos fotografiados a microscopio electrónico. Como resultados se obtuvo que el 38.7% correspondían a Amblyomma tigrinum adultos y el 61.3% a Rhipicephalus sanguineus adultos e inmadurosA total of 137 specimens of ticks were collected in eight veterinary clinics in Concepcion city to determine the ticks-species present on dogs. The specimens were analyzed with the aid of a stereomicroscope and SEM pictures were taken. From the total, 38.7% were adults of Amblyomma tigrinum and 61.3% adults and inmatures of Rhipicephalus sanguineus

  4. Garrapatas (Acari: Ixodidae) en perros de la ciudad de Concepción, Chile Ticks (Acari: Ixodidae) on dogs in Concepción city, Chile

    OpenAIRE

    Muñoz., L.; M. E. CASANUEVA

    2002-01-01

    Con la finalidad de determinar las especies de garrapatas que parasitan a los perros de la ciudad de Concepción, se extrajeron 137 garrapatas desde perros de ocho clínicas veterinarias de cuatro comunas de la ciudad de Concepción. Los ejemplares encontradas fueron observados mediante lupa estereoscópica y algunos fotografiados a microscopio electrónico. Como resultados se obtuvo que el 38.7% correspondían a Amblyomma tigrinum adultos y el 61.3% a Rhipicephalus sanguineus adultos e inmadurosA ...

  5. Nuevos hospedadores para las garrapatas Amblyomma tigrinum y Rhipicephalus sanguineus (Acari: Ixodidae) en Chile New hosts for the ticks Amblyomma tigrinum and Rhipicephalus sanguineus (Acari: Ixodidae) in Chile

    OpenAIRE

    González-Acuña, D.; Valenzuela, G; Moreno, L.; K Ardiles; A Guglielmone

    2006-01-01

    Se registran, por primera vez en Chile, ninfas de garrapata café del perro (Rhipicephalus sanguineus) parasitando dos ejemplares de cabras (Capra hircus) y adultos (un macho y una hembra gravida) de la garrapata de listas blancas (Amblyomma tigrinum) parasitando a un bovino (Bos taurus). La importancia de los presentes reportes, hechos en la provincia de Ñuble, son discutidos.For the first time in Chile, cases of nymphs of the brown dog tick (Rhipicephalus sanguineus) being found on two goats...

  6. Field evaluation of neem and canola oil for the selective control of the honey bee (Hymenoptera: Apidae) mite parasites Varroa jacobsoni (Acari: Varroidae) and Acarapis woodi (Acari: Tarsonemidae).

    Science.gov (United States)

    Melathopoulos, A P; Winston, M L; Whittington, R; Higo, H; Le Doux, M

    2000-06-01

    Neem oil, neem extract (neem-aza), and canola oil were evaluated for the management of the honey bee mite parasites Varroa jacobsoni (Oudemans) and Acarapis woodi (Rennie) in field experiments. Spraying neem oil on bees was more effective at controlling V. jacobsoni than feeding oil in a sucrose-based matrix (patty), feeding neem-aza in syrup, or spraying canola oil. Neem oil sprays also protected susceptible bees from A. woodi infestation. Only neem oil provided V. jacobsoni control comparable to the known varroacide formic acid, but it was not as effective as the synthetic product Apistan (tau-fluvalinate). Neem oil was effective only when sprayed six times at 4-d intervals and not when applied three times at 8-d intervals. Neem oil spray treatments had no effect on adult honey bee populations, but treatments reduced the amount of sealed brood in colonies by 50% and caused queen loss at higher doses. Taken together, the results suggest that neem and canola oil show some promise for managing honey bee parasitic mites, but the negative effects of treatments to colonies and the lower efficacy against V. jacobsoni compared with synthetic acaricides may limit their usefulness to beekeepers. PMID:10902299

  7. Criterios para el manejo de tetranychus urticae koch (acari: tetranychidae) con el ácaro depredador amblyseius (neoseiulus) sp. (acari: phytoseiidae) en cultivos de rosas

    OpenAIRE

    Forero, Gabriel; Rodríguez, Martha; Cantor, Fernando; Rodríguez,Daniel; Cure, José Ricardo

    2010-01-01

    En cultivos de rosas en la Sabana de Bogotá, se ha registrado Amblyseius sp. como un ácaro depredador de Tetranychus urticae. Con el fin de evaluar el potencial de este ácaro en el manejo de T. urticae, se comparó en cultivos comerciales de rosa, bajo el sistema de agobio, la efectividad de liberaciones de Amblyseius sp. frente a la aplicación de productos de síntesis química, teniendo en cuenta los siguientes criterios de evaluación: presencia-ausencia del ácaro fitófago, porcentaje d...

  8. Efeitos do nim sobre tetranychus urticae Koch (Acari: Tetranychidae) e os predadores Phytoseiulus macropilis (Banks) e Neoseiulus californicus (Mcgregor) (Acari: Phytoseiidae)

    OpenAIRE

    Daniele Cristine Hoffmann Schlesener; Adriane Fonseca Duarte; Milton Fernando Cabezas Guerrero; Uemerson Silva da Cunha; Dori Edson Nava

    2013-01-01

    O objetivo deste trabalho foi avaliar a eficiência de controle e os efeitos adversos de dois produtos à base de nim Azamax® (Azadiractina A/B 12g/L) e Neemseto® (Azadiractina A/B, Nimbina e Salanina 2,389 g/L) sobre o ácaro-rajado Tetranychus urticae e os predadores Phytoseiulus macropilis e Neoseiulus californicus em laboratório. Para o ácaro-rajado, foram consideradas as variáveis mortalidade, fecundidade, efeito ovicida e persistência biológica, enquanto para os fitoseídeos consideraram-se...

  9. Nuevos registros de ácaros oribátidos (Acari: Oribatida para la Argentina New records of oribatid mites (Acari: Oribatida for Argentina

    Directory of Open Access Journals (Sweden)

    Cecilia Accattoli

    2010-12-01

    Full Text Available Esta publicación constituye un aporte al conocimiento del elenco oribatológico en suelos de Argentina, basado en relevamientos realizados en un parque urbano de la ciudad de La Plata, Buenos Aires. Se informan dos nuevas citas de géneros, una de subgénero y siete de especies para el país. Además, cinco de las especies halladas serían nuevas para la ciencia. Se incorporan ocho géneros y siete especies a las registradas para la Provincia de Buenos Aires.This paper is a contribution to the knowledge of assemblages of oribatid mites in soils of Argentina. The study is based on samples from an urban forest in the city of La Plata, Buenos Aires. New records for the country are provided for two genera, one subgenus and seven species. Furthermore, five of the species found are possibly new to science. Eight genera and seven species are incorporated to the record of the Buenos Aires province.

  10. Sobre el género Neocalonyx (Acari: Prostigmata: Hydryphantidae en las Yungas About the genus Neocalonyx (Acari: Prostigmata: Hydryphantidae in the Yungas

    Directory of Open Access Journals (Sweden)

    Beatriz Rosso de Ferradás

    2007-12-01

    Full Text Available Se tratan aquí dos especies conocidas del género Neocalonyx y se describe una nueva especie, N. diaguita sp. nov. de la provincia de Jujuy (Argentina. Se discuten los caracteres considerados en los tres subgéneros y los cuatro grupos de especies, reconocidos en uno de ellos.Two known species of Neocalonyx genus are dealt with in this paper, and one new species, N. diaguita sp. nov. from Jujuy province in Argentina is described.The characters considered in the three subgenera and the four species groups of one of them are discussed.

  11. Canto Gregoriano: redutor de ansiedade de mães com filhos hospitalizados El Canto Gregoriano: reductor de la ansiedad de madres con hijos hospitalizados Gregorian chant: reducing anxiety of mothers with hospitalized children

    OpenAIRE

    Ana Paula Almeida; Maria Júlia Paes da Silva

    2012-01-01

    OBJETIVO: Verificar a presença de alteração do estado de ansiedade das mães de crianças hospitalizadas com a audição de canto Gregoriano. MÉTODOS: Pesquisa descritiva, exploratória, correlacional com análise quantitativa, quase experimental. A coleta dos dados foi realizada no período de julho de 2009 a fevereiro de 2010. A amostra inicial foi de 71 mães e destas 28 concluíram todas as etapas da pesquisa. RESULTADOS: O uso do canto Gregoriano diminuiu o estado de ansiedade das mães de criança...

  12. Musique, voix chantée et apprentissage : une revue de littérature et quelques propositions d'exploitation en didactique de la phonétique des langues

    OpenAIRE

    CORNAZ, Sandra; Caussade, Diane

    2014-01-01

    Publiée par le CRINI (Centre de Recherche sur les Identités Nationales et l'Interculturalité), E-Crini est une revue scientifique électronique dont l'objectif est de diffuser et de valoriser la recherche interdisciplinaire menée en civilisation, littérature, linguistique, didactique, traductologie et cinéma, sur la question des identités : linguistiques, culturelles ou encore nationales (aussi bien au sens historique qu'au sens anthropologique du terme), à travers des perspectives croisées. L...

  13. The symphonic music of the national schools in 20th century Europe in the repertoire of the Philharmonic of Cluj (1955-1989). Creative perspectives of C. Silvestri’s Chants Nostalgiques op. 27 no. 1

    OpenAIRE

    Simona Spiridon

    2015-01-01

    The present work focuses on the national cultures of the early 20th century in several European countries, such as Czechoslovakia, Poland, Hungary, Spain, Russia and Romania. Since my PhD thesis analyses the evolution of the Philharmonic “Transilvania”of Cluj between 1955-1989, there will be a thorough statistic of the concerts which were held during that period in which the orchestra performed musical pieces of the composers mentioned in this essay. For some concerts, there will also be stat...

  14. «Песнопения и молитвы» Г. В. Свиридова в контексте древнерусской и современной культуры

    OpenAIRE

    Бровина, И.

    2006-01-01

    The subject of this research is Sviridov's "Chants and Prayers". The object is to reveal and to retrace the influence of Old Russian Chanting tradition in "Chants and Prayers" on different levels: into national, stylistic and on the level of the world outlook. The systems-complex and the comparative methods are used. Sviridov's works are deeply antinomical similar to Old Russia art. It exists in the space between two poles: the pole of sermon and apophatics, of simplicity and mystery, of ecst...

  15. New taxa and new records of oribatid mites of the family Galumnidae (Acari: Oribatida) from Ecuador

    Czech Academy of Sciences Publication Activity Database

    Ermilov, S.G.; Starý, Josef; Sandmann, D.; Marian, F.; Maraun, M.

    2013-01-01

    Roč. 3700, č. 2 (2013), s. 259-270. ISSN 1175-5326 Institutional research plan: CEZ:AV0Z60660521 Institutional support: RVO:60077344 Keywords : Oribatida * Galumnidae * new species * Ecuador Subject RIV: EG - Zoology Impact factor: 1.060, year: 2013

  16. A new genus and species of phytoseiid mites (Acari: Mesostigmata) from the Brazilian Atlantic forest

    OpenAIRE

    Kreiter, Serge; Tixier, Marie-Stéphane

    2010-01-01

    The phytoseiid mite Ragusaseius ferraguti n. gen., n. sp. is described from the primary Atlantic Forest Mata Atlantica in Brazil, based on specimens collected on Cyphomandra calycina Sendth (Solanaceae). This mite is unique in the following combination of characters: setae J3 and J4 present; dorsal setae medium to long, except for J5, and serrated; ventrianal shield anteriorly eroded, containing only JV2 and occasionally ZV2 in addition to circumanal setae.

  17. Chenophila nanseni sp. n. (Acari: Syringophilidae parasitising the barnacle goose in Svalbard

    Directory of Open Access Journals (Sweden)

    Skoracki Maciej

    2016-03-01

    Full Text Available A new species, Chenophila nanseni sp. n., collected from covert quills of the barnacle goose Branta leucopsis (Anseriformes: Anatidae in Svalbard (Spitsbergen is described and female polymorphism is recorded in this species. In syringophilids this phenomenon was known only for representatives of the genus Stibarokris. The new species differs from the similar Ch. platyrhynchos by following features: in females of Ch. nanseni the anterior margin of the propodonotal shield is flat (vs. concave in Ch. platyrhynchos and the lengths of idiosomal setae si, f2 and ag3 in Ch. nanseni are distinctly shorter than in Ch. plathyrynchos.

  18. An overview of Suctorian ciliates (Ciliophora, Suctorea) as epibionts of halacarid mites (Acari, Halacaridae)

    Digital Repository Service at National Institute of Oceanography (India)

    Dovgal, I.; Chatterjee, T.; Ingole, B.S.

    of Learning, I.S.M. Annexe, P.O. – I.S.M., Dhanbad-826004, Jharkhand, India. E-mail: drtchatterjee@yahoo.co.in 3 Biological Oceanography Division, National Institute of Oceanography, Dona Paula, Goa-403004, India. E-mail: baban@nio.org Abstract Scant... lived predominantly on halacarid adults and deutonymphs, and rarely on protonymphs and larvae because of short life span in protonymph and larva stages. Analysis of the literature and our own data have shown that only four suctorian species observed...

  19. [Occurrence of the mite Pyemotes sp. (Acari: Pyemotidae) in insect rearing in laboratory].

    Science.gov (United States)

    da Cunha, Uemerson S; Silva, Edmilson S; de Moraes, Gilberto J; Vendramim, José D

    2006-01-01

    Pyemotidae mites have been reported as ectoparasites of a large number of arthropods, especially of insects. These mites are frequently found attacking insects in different habitats, including insect rearing. This paper reports the occurrence of Pyemotes sp., ventricosus group, in colonies of Tuta absoluta (Meyerick) (Lepidoptera: Gelechiidae), Anagasta kuehniella (Zeller) (Lepidoptera: Pyralidae) and Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), in the insect rearing laboratory of ESALQ-USP, in Piracicaba, State of São Paulo, provoking dematitis in those involved with the rearing. This is the first report of a Pyemotes species parasitizing T. absoluta and S. zeamais. Considering the capacity of Pyemotes to cause dermatitis in human beings, demonstrated by other authors, the direct use of the Pyemotes species found in this work for the control of the reported insect species may not be promising. PMID:17061810

  20. Survey of natural enemies of spider mites (Acari: Tetranychidae) in citrus orchards in eastern Spain.

    Science.gov (United States)

    Abad-Moyano, Raquel; Pina, Tatiana; Dembilio, Oscar; Ferragut, Francisco; Urbaneja, Alberto

    2009-01-01

    Field surveys were conducted from 2004 to 2007 to determine the species composition and relative abundance of natural enemies associated with colonies of either the citrus red mite, Panonychus citri, or the two spotted spider mite, Tetranychus urticae, in Valencian citrus orchards (eastern Spain). Fourteen species were recorded, six phytoseiid mites and eight insect predators. Two of them are reported for the first time on citrus in Spain and two more are first reports as predators associated with T. urticae. The community of predators associated with T. urticae and P. citri was almost identical, and the Morisita-Horn index of similarity between both natural enemy complexes was close to one, suggesting that predators forage on both pest species. Quantifying the presence of many known spider mites predators in Valencian citrus orchards is an important first step towards spider mite control. A challenge for future studies will be to establish conservation and/or augmentation management strategies for these predators, especially to improve T. urticae biological control. PMID:18803026

  1. Molecular Effects of Irradiation (Cobalt-60) on the Control of Panonychus citri (Acari: Tetranychidae).

    Science.gov (United States)

    Zhang, Ke; Luo, Lingyan; Chen, Xieting; Hu, Meiying; Hu, Qiongbo; Gong, Liang; Weng, Qunfang

    2015-01-01

    The effective dose of irradiation to control pest mites in quarantine has been studied extensively, but the molecular mechanisms underlying the effects of the irradiation on mites are largely unknown. In this study, exposure to 400 Gy of γ rays had significant (p Panonychus citri. The irradiation caused the degradation of the DNA of P. citri adults and damaged the plasma membrane system of the egg, which led to condensed nucleoli and gathered yolk. Additionally, the transcriptomes and gene expression profiles between irradiated and non-irradiated mites were compared, and three digital gene expression libraries were assembled and analyzed. The differentially expressed genes were putatively involved in apoptosis, cell death and the cell cycle. Finally, the expression profiles of some related genes were studied using quantitative real-time PCR. Our study provides valuable information on the changes in the transcriptome of irradiated P. citri, which will facilitate a better understanding of the molecular mechanisms that cause the sterility induced by irradiation. PMID:26569230

  2. Population dynamics of Panonychus osmanthi (Acari: Tetranychidae) on two Osmanthus species.

    Science.gov (United States)

    Kitashima, Yasuki; Gotoh, Tetsuo

    2003-01-01

    Panonychus osmanthi is a non-diapausing species of spider mite that superficially resembles P. citri. It infests Osmanthus species, which are evergreen roadside and garden trees. The population dynamics of P. osmanthi were studied on Osmanthus aurantiacus and O. x fortunei during a three-year period. Seasonal changes in P. osmanthi populations were fundamentally the same in each year, although their density differed greatly from year to year. The P. osmanthi population was bimodal, with one peak in spring (May-June) and another in winter (November-January). Populations abruptly declined after the spring peak. Predators showed a delayed density-dependent response to changes in spider mites from spring to summer, whereas in autumn and winter, predators were few because they had entered diapause. To determine the effect of predators on the rapid decline of spider mites just after the spring peak, the predators were removed by treating the trees with a synthetic pyrethroid. As a result, spider mite density did not decline after the spring peak and remained at a high level during the June-August period when spider mite density is usually very low. This suggests that predators play an important role in the drastic decline of P. osmanthi density just after the spring peak. PMID:14635810

  3. Significance of habitat type for the genetic population structure of Panonychus citri (Acari: Tetranychidae).

    Science.gov (United States)

    Osakabe, Masahiro; Goka, Kouichi; Toda, Satoshi; Shintaku, Toshiyuki; Amano, Hiroshi

    2005-01-01

    Restricted migration and habitat fragmentation promote genetic differentiation between populations. Because most of the hosts of Panonychus citri are woody plants, mainly citrus trees that are usually planted at intervals of several metres, this mite likely faces more risks (e.g., starvation) by dispersing between host plants, compared to other spider mite species that infest both herbaceous and woody plants, such as Tetranychus urticae. Such a limited gene flow between patches (host plants) can lead to differentiation of populations even within a small area. Therefore, we hypothesize that P. citri populations are genetically differentiated not only between distant populations but also within small areas, such as within a grove. To test this hypothesis, we investigated the divergence of P. citri populations in Japanese citrus groves according to a hierarchical arrangement of geographical distance, ranging from distant populations (10 groves distributed throughout different areas in two major Japanese islands; this level of analysis is referred to as 'geographic') to local populations (different trees in a specific grove; 'local'). Three molecular markers were used: an esterase locus, one microsatellite and a point mutation in the mitochondrial cytochrome oxidase subunit I. At a local level acaricide susceptibility tests were also performed using two acaricides: fenpyroximate (25 ppm) and etoxazole (3.33 ppm). At a broad geographic level the gene diversity decreased with decreasing area size and distance between populations. By contrast, at the local level, populations maintained a significant level of variation between trees within groves, and the divergence within groves was higher than between groves. Whereas no statistical difference of the mortalities was detected among groves for the two acaricides tested, the difference was statistically significant among trees within groves in fenpyroximate (ANOVA, pcitri populations maintain a higher level of variation between trees (or patches of trees) within groves than between groves at the local level, though the gene diversity tended to be smaller with decreasing distance between populations at the geographical level. Results are discussed in relation to the dispersal behaviour of spider mites. PMID:16082921

  4. Irradiation as a phytosanitary treatment for mites of the specie Tyrophagus putrescentiae (Acari: Acaridae)

    International Nuclear Information System (INIS)

    In great populations mites of the specie Tyrophagus putrescentiae can cause damages in stored products. The work had as objective to evaluate the effects of the gamma radiation of the Cobalt-60 to control the mites of the specie T. putrescentiae. The mites were irradiated with doses of 0 (control), 300, 400, 500, 600, 700, 800 Gy, in a source of Cobalt-60 type Gammacell-220, with a dose rate of 0.718 kGy/hour. Each treatment consisted of four repetitions containing 10 mites each, in a total of approximately 40 mites for treatment. The evaluations were daily, being counted the number of mites died, put eggs and emerged larvae. Based on the obtained results it was concluded that the dose sterilizing for the mites of this specie was of 300 Gy. Already the dose of 600 Gy induced the total mortality of the mites after 11 days of the irradiation process. (author)

  5. Interspecific diversity of mitochondrial COI sequences in Japanese Panonychus species (Acari: Tetranychidae).

    Science.gov (United States)

    Toda, S; Osakabe, M; Komazaki, S

    2000-01-01

    Sequences of a part of the mitochondrial cytochrome oxidase subunit I (COI) gene were analyzed in four Japanese Panonychus species to determine their phylogenetic relationships. Neighbor-Joining and maximum likelihood analysis resulted in a high bootstrap support of the relationships within the genus Panonychus. In contrast with a previous study based on ribosomal DNA data, the COI phylogeny suggested that P. mori was more distantly related to P. citri than to P. ulmi. This study shows for the first time that P. osmanthi is closely related to P. citri. Intraspecific variation analysis shows that the genetic distance between two local populations of P. mori is higher than between P. citri and P. osmanthi. PMID:11345318

  6. RFLP analysis of ribosomal DNA in sibling species of spider mite, genus Panonychus (Acari: Tetranychidae).

    Science.gov (United States)

    Osakabe, M; Sakagami, Y

    1994-02-01

    Ribosomal DNA (rDNA) restriction fragment length of spider mites was analysed in three sibling species of genus Panonychus (P. mori, P. citri and P. ulmi) and Tetranychus urticae. Seventy-one fragments were detected by enhanced chemiluminescence (ECL) after Southern hybridization with two genomic rDNA probes of mouse. Percentages of shared fragments within species were larger than those among species, indicating that the variation of rDNAs was useful in phylogenetic studies of spider mite species. In a phenogram based on differences of the rDNA fragment length, the relationship among Panonychus species was compatible with the results of analysis based on the morphological characters. PMID:7915173

  7. Molecular characterization of two carboxylesterase genes of the citrus red mite, Panonychus citri (Acari: Tetranychidae).

    Science.gov (United States)

    Zhang, Kun; Niu, Jin-Zhi; Ding, Tian-Bo; Dou, Wei; Wang, Jin-Jun

    2013-04-01

    The citrus red mite, Panonychus citri, is known for its ability to rapidly evolve resistance to insecticides/acaricides and to adapt to hosts that produce toxins. To get better insight into the detoxification mechanism of P. citri, two carboxylesterase (CarE) genes, PCE1 and PCE2, were isolated and characterized. PCE1 and PCE2 contained open reading frames of 1,653 and 1,392 nucleotides, encoding proteins of 550 and 463 amino acid residues, respectively. Phylogenetic analyses showed that PCE1 and PCE2 were most closely related to the CarE genes from other phytophagous mites. The transcriptional profiles of two CarE genes among developmental stages (egg, larva, nymph, adult female, and adult male), after exposing to four acaricides (avermectin, azocyclotin, pyridaben, and spirodiclofen) and acid rain were investigated using real-time quantitative PCR (qPCR). The results showed that during development, PCE1 was highly expressed at the egg stage, whereas PCE2 was abundantly expressed at the adult stage of males. The expression levels of PCE1 were highly induced upon exposure to acaricides and acid rain. On the other hand, the expression levels of PCE2 were increased after treatment with avermectin and pyridaben. These results suggest that PCE1 and PCE2 may have distinct roles in different developmental stages and participate in the detoxification of acaricides. PMID:23404785

  8. Molecular Effects of Irradiation (Cobalt-60) on the Control of Panonychus citri (Acari: Tetranychidae)

    OpenAIRE

    Ke Zhang; Lingyan Luo; Xieting Chen; Meiying Hu; Qiongbo Hu; Liang Gong; Qunfang Weng

    2015-01-01

    The effective dose of irradiation to control pest mites in quarantine has been studied extensively, but the molecular mechanisms underlying the effects of the irradiation on mites are largely unknown. In this study, exposure to 400 Gy of γ rays had significant (p < 0.05) effects on the adult survival, fecundity and egg viability of Panonychus citri. The irradiation caused the degradation of the DNA of P. citri adults and damaged the plasma membrane system of the egg, which led to condensed...

  9. Life-history traits of the six Panonychus species from Japan (Acari: Tetranychidae).

    Science.gov (United States)

    Gotoh, Tetsuo; Ishikawa, Yukio; Kitashima, Yasuki

    2003-01-01

    Six species of the genus Panonychus are known from Japan. Life-history parameters of all six species were investigated at 25 degrees C, and for three species two strains of different geographical origin were included. The intrinsic rate of natural increase (r(m)) ranged from 0.172/day for the P. osmanthi albino strain to 0.209/day for P. citri, while the net reproductive rate (R0) varied from 23.98 in the thelytokous species P. thelytokus to 46.61 in P. citri. Both values were higher in the polyphagous species (P. ulmi, P mori and P. citri), which are considered crop pests, than those in the oligophagous species (P. thelytokus and P. osmanthi), considered non-pests. The only exception was P. bambusicola, an oligophagous non-pest species with R0- and r(m)-values closely resembling those of the three polyphagous species. PMID:14635811

  10. Application of gamma radiation on longevity of some mites species (Acari: Tetranychidade)

    Energy Technology Data Exchange (ETDEWEB)

    Machi, Andre R., E-mail: rica_machi@hotmail.com [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil); Arthur, Valter, E-mail: arthur@cena.usp.br [Centro de Energia Nuclear na Agricultura (CENA/USP), Piracicaba, SP (Brazil)

    2015-07-01

    Mites are pests agricultural found in various environments accessible to animal life: soil, aerial parts of the plants, host insects. In this research the effects of gamma irradiation on longevity of mite pests of the tetranychidae family have been studied. The mites were irradiated in a source of Cobalt-60, Gammacell-220 type, at a dose rate of 0.486 kGy located in the CENA/USP, in the doses of 0 (control), 100, 200, 300, and 400 Gy with sixteen replicates per dose. After the irradiation, the mites were placed in petri dishes totalizing 5 treatments in 32 repetitions. The analysis of variance design with completely randomized design using the Statistical Analysis System (SAS) and the Tukey test, the verification of means. Were evaluated daily the adult mortality and longevity of irradiated mites. After 25 days was observed a mean longevity of mites, for O.ilicis, 100 Gy was equal the control dose (18.3 days), but to T. desertorum and T. urticae the larger longevity was observed in the dose of 200 Gy (19.0 days) being that this dose, obtained the larger longevity in comparison to control dose (18.5 days), in general the longevity decreased in relation to increased doses. Thus, only the dose of 100 Gy and 200 Gy stimulated an increased the longevity in O. ilicis and T. desertorum and T. urticae respectively. The exact mechanism by which the mites are tolerant to avoid damage caused by radicals when exposed to ionizing radiation is not fully understood. (author)

  11. Application of gamma radiation on longevity of some mites species (Acari: Tetranychidade)

    International Nuclear Information System (INIS)

    Mites are pests agricultural found in various environments accessible to animal life: soil, aerial parts of the plants, host insects. In this research the effects of gamma irradiation on longevity of mite pests of the tetranychidae family have been studied. The mites were irradiated in a source of Cobalt-60, Gammacell-220 type, at a dose rate of 0.486 kGy located in the CENA/USP, in the doses of 0 (control), 100, 200, 300, and 400 Gy with sixteen replicates per dose. After the irradiation, the mites were placed in petri dishes totalizing 5 treatments in 32 repetitions. The analysis of variance design with completely randomized design using the Statistical Analysis System (SAS) and the Tukey test, the verification of means. Were evaluated daily the adult mortality and longevity of irradiated mites. After 25 days was observed a mean longevity of mites, for O.ilicis, 100 Gy was equal the control dose (18.3 days), but to T. desertorum and T. urticae the larger longevity was observed in the dose of 200 Gy (19.0 days) being that this dose, obtained the larger longevity in comparison to control dose (18.5 days), in general the longevity decreased in relation to increased doses. Thus, only the dose of 100 Gy and 200 Gy stimulated an increased the longevity in O. ilicis and T. desertorum and T. urticae respectively. The exact mechanism by which the mites are tolerant to avoid damage caused by radicals when exposed to ionizing radiation is not fully understood. (author)

  12. The Effect of Spiromesifen on the Reproductive Potential of Tetranychus urticae Koch (Acari: Tetranychidae

    Directory of Open Access Journals (Sweden)

    Dejan Marčić

    2009-01-01

    Full Text Available Laboratory bioassays were conducted to evaluate the effects of spiromesifen on the fecundity, fertility and population growth of two-spotted spider mite (Tetranychus urticae Koch after treatment of pre-ovipositing females with five acaricide concentrations: 180mg/l (maximum recommended concentration for use in glasshouses against spider mites, 18 mg/l, 1.8 mg/l and 0.18 mg/l (the last one was discriminative for eggs and immatures in preliminary studies, i.e. produced 100% mortality of those stages and 0.018 mg/l. After24h exposure, the percentages of females surviving treatment without visible symptoms of poisoning were 50% (180 mg/l, 45% (18 mg/l, 51% (1.8 mg/l, 74% (0.18 mg/l, 96% (0.018 mg/l and 98% (0 mg/l. Over the first four days after treatment, the females that survived180 mg/l and 18 mg/l laid no eggs. The total number of eggs laid after treatment with these two concentrations was reduced to less than 2% against the control by the end of the trial. The females that survived 1.8 mg/l laid 50% less eggs, compared to the control, while the number of eggs laid by the females treated with 0.18 mg/l and 0.018 mg/l were 19% and 4% lower, respectively. Over the initial four days, egg hatch rates in treatments were 73-87%, and 92-93% in the control. Significant statistical differences between gross fecundity (FCg and gross fertility (FTg values in the control and treatments were detected for females surviving 180 mg/l, 18 mg/l and 1.8 mg/l. On the other hand, only the net fertility (FTn value of females treated with 0.018 mg/l showed no statistically significant difference from the control value. Treatments with 180 mg/l and 18 mg/l significantly reduced the instantaneous rate of increase (ri 6, 8 and 10 days after treatment, compared to the control. The negative ri values in those treatments indicated a declining population. Sublethal effects of spiromesifen and its impact on T. urticae management are discussed.

  13. Reproductive parameters of Tetranychus urticae (Acari: Tetranychidae) affected by neonicotinoid insecticides.

    Science.gov (United States)

    Barati, Reihaneh; Hejazi, Mir Jalil

    2015-08-01

    Two-spotted spider mite is a major pest of many agricultural and ornamental crops worldwide. Some reports have indicated that application of neonicotinoid insecticides may lead to increased fecundity of this pest. If this is found to be true, the use of these pesticides may cause an outbreak of spider mite populations. Sublethal effects of three neonicotinoids, namely thiacloprid, acetamiprid and thiamethoxam were studied on T. urticae adults at field recommended doses. The experiments were carried out using bean leaf pieces in plastic Petri dishes. The adult mites were treated using two methods: (1) drench application and (2) spraying of leaves with Potter Spray Tower. Our results indicated that all neonicotinoids tested increased T. urticae population. In both treatment methods, acetamiprid treated mites had the highest intrinsic rate of population increase (rm) and finite rate of population increase (λ); and the lowest mean generation time (T) and doubling time among the treatments. If similar results are obtained from greenhouse and field trials, the use of these insecticides requires necessary precautions such as avoiding repeated use of neonicotinoid insecticide for controlling insect pests. PMID:25912952

  14. Functional response of Phytoseiulus macropilis under different Tetranychus urticae (Acari: Phytoseiidae, Tetranychidae population density in laboratory

    Directory of Open Access Journals (Sweden)

    Noeli Juarez Ferla

    2011-02-01

    Full Text Available We tested the functional response of the phytoseiid predator Phytoseiulus macropilis (Banks, 1904 to different population densities of Tetranychus urticae Koch, 1836 (the two-spotted spider mite - TSSM in the laboratory. We evaluated the curve that best fits the data obtained, based on the reduced X². The predators were obtained from leaves of Oso Grande strawberries at the municipality of Bom Princípio, state of Rio Grande do Sul, Brazil. Fifteen seemingly healthy females of P. macropilis were randomly chosen and individualized in each of the arenas with different TSSM densities. The following prey densities were tested: 1, 2, 3, 5, 10, 20, 30, 35, 45, 55, 70 and 125 females. The tests were performed in a germination chamber with photoperiod of 12 hours at 28 ± 1ºC per day and 22 ± 1ºC at night and 80 ± 5% relative humidity. In all tests with up to three prey items, P. macropilis showed low functional response, whereas higher rates were observed when more prey items were offered. There was a strong positive correlation between increased prey numbers and daily prey consumption (r = 0.84 and p = 0.0006. A significant correlation was found between prey consumption and total oviposition (r = 0.70, p = 0.01. The daily oviposition rate was lower when few prey items were offered, increasing significantly with increased prey availability. The results showed a positive correlation between the number of prey items offered to the predator and its oviposition rate (r = 0.66, p = 0.01. Nevertheless, a strong correlation was observed between the daily consumption of prey and eggs/female/day (r = 0.92, p < 0.0001. A shorter oviposition period was reported when up to three prey items were offered. The oviposition period and the increase in prey numbers were positively correlated (r = 0.30, p = 0.34, but the difference was not statistically significant. Nevertheless, the longer the egg-laying period, the greater the oviposition rate (r = 0.90, p < 0.0001. The curve that best fits the data obtained in each case was also calculated, based on the least square method.

  15. Stability and fitness costs associated with etoxazole resistance in Tetranychus urticae (Acari: Tetranychidae).

    Science.gov (United States)

    Stocco, Rafael Sorrentino Minazzi; Sato, Mário Eidi; Santos, Taiana Lumi

    2016-08-01

    The two-spotted spider mite, Tetranychus urticae Koch, is one of the most important pests on a wide range of crops worldwide. Studies on stability of resistance and possible fitness costs associated with etoxazole resistance were carried out in T. urticae to provide basic information necessary to define effective acaricide resistance management strategies for this pest. Selection for resistance to etoxazole was performed in a population of T. urticae collected from a commercial rose field, in Holambra County, in the State of São Paulo, Brazil. After five rounds of selection for resistance, the resistance ratio (R/S) at the LC50 reached 8739 fold value in comparison with a susceptible strain (Brazabrantes S Strain). The stability of etoxazole resistance was studied under laboratory conditions, using a population with initial frequency of 75 % of resistant mites. The frequencies of etoxazole resistance were evaluated monthly for a period of 13 months. The frequency of etoxazole resistance decreased from 75 to 37 % in this period. Comparison of biological traits between resistant and susceptible strains indicated the presence of fitness costs associated with etoxazole resistance. The resistant strain showed lower fecundity and a higher proportion of males in the population. The figures for net reproductive rate (R 0), intrinsic rate of natural increase (r m) and finite rate of increase (λ) were higher in the susceptible strain. The instability of etoxazole resistance is a favorable aspect for the acaricide resistance management in the spider mite. PMID:27222145

  16. Greenhouse and Field Evaluation of Two Biopesticides Against Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae

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    Dejan Marčić

    2012-01-01

    Full Text Available The mycopesticide Naturalis (based on Beauveria bassiana strain ATCC 74040 andbotanical pesticide Kingbo (based on oxymatrine, an alkaloid from Sophora flavescens, a traditionalChinese herb were tested against the two-spotted spider mite (Tetranychus urticaeon greenhouse vegetables and the European red mite (Panonychus ulmi on apples. Thesebiopesticide products were applied twice at 5-day interval and concentrations of 0.1% and0.2%, and their effectiveness was compared to abamectin-based products and the syntheticacaricides acrinathrin and spirodiclofen, applied once at their recommended rates.The mycopesticide Naturalis, applied at 0.1% concentration against T. urticae on cucumber,reduced mite population density by 85-86%, achieving 91-93% efficacy. In a trial on tomato,efficacy reached some 96%, while population density was reduced by 93%. In a field trialon apple, Naturalis demonstrated an increasing and long-lasting effectiveness against thesummer population of P. ulmi of nearly 100%, and population reduction was achieved inassessments 30 days after the first treatment. Naturalis applied at a double rate achieved asomewhat better effect but only in the first trial. The botanical pesticide Kingbo, applied at0.1% concentration, demonstrated very high control efficacy (≥98% and population densityreduction (≥96% of T. urticae in both trials. A high and long-lasting effectiveness of thisbioacaricide was also achieved in a trial on P. ulmi. Its concentration of 0.2% achieved similareffect. The results in these trials indicate that applications of the mycopesticide Naturalisand the botanical pesticide Kingbo can provide effective control of T. urticae on cucumberand tomato grown in greenhouses, as well as P. ulmi on apple.

  17. Tetranychus urticae (Acari: Tetranychidae) transmits Acidovorax citrulli, causal agent of bacterial fruit blotch of watermelon.

    Science.gov (United States)

    Choi, Okhee; Park, Jung-Joon; Kim, Jinwoo

    2016-08-01

    The two-spotted spider mite (TSSM) Tetranychus urticae is one of the most important pests of cucurbit plants. If TSSM can act as vector for Acidovorax citrulli (Acc), causal agent of bacterial fruit blotch (BFB), then the movement of mites from infected to healthy plants may represent a potential source of inocula for BFB outbreaks. To confirm the association between Acc and TSSM, we generated a green fluorescent protein-tagged mutant strain (Acc02rf) by transposon mutagenesis and demonstrated that TSSM can transmit Acc from infected to non-infected watermelon plants. Challenge with 10 TSSMs carrying Acc02rf population densities of 1.3 × 10(3) CFU each on freshly grown individual watermelon plants caused disease transmission to 53 %. Incubation periods ranged 7-9 days. Bacteria recovered from symptoms typical of those associated with leaf necrosis were characterized and identified as Acc. To our knowledge, this is the first report showing that TSSM can be a vector of Acc. The results reported here support that the strong association of TSSM with Acc is of particular importance in controlling BFB. PMID:27178042

  18. Competitive and Predacious Interactions Among Three Phytoseiid Species Under Experimental Conditions (Acari: Phytoseiidae).

    Science.gov (United States)

    Ji, J; Zhang, Y-X; Saito, Y; Takada, T; Tsuji, N

    2016-02-01

    The effect of competition on species that coexist with similar ecological niches is an important theme in ecology. Furthermore, species displacement by introduced or invaded species is also an important environmental problem for biological control and conservation ecology. We tested whether two species of phytoseiids could coexist in closed cages with ample quantities of the extraguild prey species Carpoglyphus lactis (L.). Three species of phytoseiid mites-Amblyseius eharai Amitai & Swirski (a species native to China), Amblyseius swirskii (Athias-Henriot) and Neoseiulus cucumeris (Oudemans) (both species were introduced from outside of China)-were tested under experimental conditions (25 ± 1°C, 90 ± 5% relative humidity, and a photoperiod of 14:10 [L:D] h). With extraguild prey, we found that the numbers of a single population of each phytoseiid species (initial density of 10 females per cage) reached a plateau between 18 and 25 d after introduction into the experimental cages, suggesting that density-dependent factors were operating. In closed environments, one of these density-dependent factors might be cannibalism by these species. With regression analyses, Lotka-Volterra equations estimated the rate of population increase (r) and the carrying capacity (K) of each species with the data from observations on population dynamics. We next observed the interactions of two phytoseiid species with abundant extraguild prey. In all species combinations, one species went extinct and the other increased in population size, despite the availability of sufficient extraguild prey, suggesting some type of competition must have caused the extinctions. We suggested that intraguild predation is the most plausible hypothesis to explain the results. PMID:26496951

  19. Human Infestation with Dermanyssus gallinae (Acari: Dermanyssidae) in a Family Referred with Pruritus and Skin Lesions.

    Science.gov (United States)

    Abdigoudarzi, Mohammad; Mirafzali, Mahmoud S; Belgheiszadeh, Hamid

    2014-01-01

    The poultry red mite, Dermanyssus gallinae is one of the most economically important ectoparasites in hens and some species of mammals worldwide. Cases of human infestation have been reported worldwide. In this study we report infestation in three members of a family referred with pruritus and allergic dermatitis rash. They have collected very small animals and carried them to the laboratory which later was confirmed as D. gallinae. They claimed that they had been bitten with this ectoparasite. This is the first case report of human infestation owing to D. gallinae from Iran. PMID:25629073

  20. [Comparison of different sampling traps for Dermanyssus gallinae (Acari: Dermanyssidae) (de Geer, 1778)].

    Science.gov (United States)

    Cunha, Lucas M; Cunha, Mariana M; Leite, Romário C; Silva, Israel J; Oliveira, Paulo R de

    2009-01-01

    This work aims to compare the performance of corrugated paper and "taquaril" bamboo (Phyllostachys sp.) straw traps for collecting (in sampling) Dermanyssus gallinae in a metal cages battery laying hens. The presence of eggs in the two trap models were compared using a Qui-square test and a proportion confidence interval test. Total daily values of mobile instars gathered in each type of trap were compared using the Wilcoxon's test. The amount of traps containing eggs was not different in neither of the traps (p < 0,05). The number of mobile instars sampled at every two days per trap model was different (p

  1. Human Infestation with Dermanyssus gallinae (Acari: Dermanyssidae in a Family Referred with Pruritus and Skin Lesions.

    Directory of Open Access Journals (Sweden)

    Mohammad Abdigoudarzi

    2014-06-01

    Full Text Available The poultry red mite, Dermanyssus gallinae is one of the most economically important ectoparasites in hens and some species of mammals worldwide. Cases of human infestation have been reported worldwide. In this study we report infestation in three members of a family referred with pruritus and allergic dermatitis rash. They have collected very small animals and carried them to the laboratory which later was confirmed as D. gallinae. They claimed that they had been bitten with this ectoparasite. This is the first case report of human infestation owing to D. gallinae from Iran.

  2. Human Infestation with Dermanyssus gallinae (Acari: Dermanyssidae) in a Family Referred with Pruritus and Skin Lesions

    OpenAIRE

    Mohammad Abdigoudarzi; Mahmoud S Mirafzali; Hamid Belgheiszadeh

    2013-01-01

    The poultry red mite, Dermanyssus gallinae is one of the most economically important ectoparasites in hens and some species of mammals worldwide. Cases of human infestation have been reported worldwide. In this study we report infestation in three members of a family referred with pruritus and allergic dermatitis rash. They have collected very small animals and carried them to the laboratory which later was confirmed as D. gallinae. They claimed that they had been bitten with this ectoparasit...

  3. Comparison of four methods of extracting DNA from D. gallinae (Acari: Dermanyssidae)

    OpenAIRE

    Desloire, Sophie; VALIENTE-MORO, Claire; Chauve, Claude; Zenner, Lionel

    2006-01-01

    Dermanyssus gallinae is one of the most serious ectoparasites of poultry and it has been implicated as a vector of several major pathogenic diseases. Molecular detection of such pathogens in mites is crucial and therefore, an important step is the extraction of their DNA from mites. So, we compared four DNA extraction protocols from engorged and unfed individual mites: a conventional method using a Cethyl Trimethyl Ammonium Bromide buffer (CTAB), a Chelex resin, a Qiamp DNA extraction kit and...

  4. Amblyomma yucumense n. sp. (Acari: Ixodidae), a Parasite of Wild Mammals in Southern Brazil.

    Science.gov (United States)

    Krawczak, Felipe S; Martins, Thiago F; Oliveira, Caroline S; Binder, Lina C; Costa, Francisco B; Nunes, Pablo H; Gregori, Fábio; Labruna, Marcelo B

    2015-01-01

    During 2013-2014, adult ticks were collected on the vegetation and subadult ticks were collected from small mammals [Didelphis aurita Wied-Neuwied, Sooretamys angouya (Fischer), Euryoryzomys russatus (Wagner), Akodon montensis Thomas, Oxymycterus judex Thomas] in an Atlantic rainforest reserve in southern Brazil. Analyses of the external morphology of the adult ticks revealed that they represent a new species, Amblyomma yucumense n. sp. Partial 16S rRNA sequences generated from males, females, and nymphs were identical to each other and closest (95% identity) to corresponding sequences of Amblyomma dubitatum Neumann. A. yucumense is morphologically and genetically closest related to A. dubitatum. Dorsally, male of these species can be separated by major longitudinal pale orange stripes associated with a pseudoscutum indicated by a pale stripe in A. yucumense, in contrast to pale creamy longitudinal stripes and absence of pseudoscutum in A. dubitatum. Ventrally, male coxal I spurs are separated by a space narrower than external spur width in A. yucumense, and wider than external spur width in A. dubitatum. Females of the two species can be separated by coxal I spurs, longer in A. yucumense than in A. dubitatum. In addition, the adult capitulum and ventral idiosoma of A. yucumense are generally dark brown colored, while A. dubitatum is yellowish or light brown colored. The nymph of A. yucumense differs from A. dubitatum by the scutal cervical groove length, slightly shorter in the former species. Currently, A. yucumense is restricted to southern Brazil. PMID:26336277

  5. Association patterns of ticks (Acari: Ixodida: Ixodidae, Argasidae) of small mammals in Cerrado fragments, western Brazil.

    Science.gov (United States)

    Sponchiado, Jonas; Melo, Geruza L; Martins, Thiago F; Krawczak, Felipe S; Labruna, Marcelo B; Cáceres, Nilton C

    2015-03-01

    The present study describes ticks associated with small mammals and analyzes the aggregation patterns according to seasonal and host variations in the Cerrado biome, central-western Brazil. Small mammals were systematically captured in 54 woodland fragments from February 2012 to July 2013. A total of 1,040 animals belonging to eight marsupial and 12 rodent species were captured; 265 animals were parasitized by eight tick species (in decreasing order of abundance): Ornithodoros mimon, Amblyomma coelebs, Amblyomma sculptum, Amblyomma ovale, Amblyomma parvum, Amblyomma dubitatum, Amblyomma parkeri, and Ixodes amarali. With few exceptions, collected ticks were larvae and nymphs. Among the more abundant animals, the marsupial Didelphis albiventris showed the highest tick prevalence (84.4 %), mean abundance (19.2), mean intensity (22.8), richness of ticks species (n = 7), and total abundance of ticks (n = 2,457). Amblyomma sculptum and O. mimon were the most generalist species, collected on four host species. Fifteen new tick-host associations are reported for the first time. Most ticks showed higher prevalence and mean intensity in the dry season, regardless of host species. Overall, tick prevalence and mean intensity of infestation were significantly associated with host gender. Finally, the importance of the large number of records of the argasid O. mimon is discussed. PMID:25633262

  6. Toxicity of neem oil to the cassava green mite Mononychellus tanajoa (Bondar) (Acari: Tetranychidae)

    OpenAIRE

    Amanda C.B Silva; Adenir V. Teodoro; Oliveira, Eugênio E.; Adriano S Rêgo; Silva, Rafael R.

    2013-01-01

    Neem (Azadirachta indica A. Juss.)-derived pesticides have been used against a wide range of agricultural pests including tetranychid mites. Approaches combining lethal and sublethal toxicity studies of neem pesticides towards tetranychid mites are necessary to a comprehensive evaluation of such products. Here, we evaluated the lethal and sublethal toxicity of the neem oil Bioneem to the cassava green mite Mononychellus tanajoa (Bondar) by integrating lethal concentration (LC) with population...

  7. Rhipicephalus sanguineus (Acari: Ixodidae) female ticks exposed to castor oil (Ricinus communis): an ultrastructural overview.

    Science.gov (United States)

    Sampieri, B R; Furquim, K C S; Nunes, P H; Camargo-Mathias, M I

    2013-02-01

    Tick control has been accomplished through the use of synthetic acaricides, which has created resistant individuals, as well as contaminating the environment and nontarget organisms. Substances of plant origin, such as oils and extracts of eucalyptus and neem leaves, have been researched as an alternative to replace the synthetic acaricides. Ricinoleic acid esters from castor oil have recently been shown as a promising alternative in eliminating bacterial contamination during ethanol fermentation, by acting as an effective biocide. The same positive results have been observed when these esters are added to the food given to tick-infested rabbits. This study tested the effect of these substance on the reproductive system of Rhipicephalus sanguineus females, added to rabbit food, more specifically on oogenesis. For this, four groups were established: four control groups (CG1, CG2, CG3, and CG4) and four treatment groups (TG1, TG2, TG3, and TG4) with one rabbit in each (New Zealand White), used as hosts. After full 4 days feeding (semi-engorgement), the females were collected and had their ovaries extracted. In this study, it was observed that R. sanguineus females exposed to esters had their ovaries modified, which was demonstrated through transmission electron microscopy techniques. The addition of ricinoleic esters to the diet of tick-infested rabbits revealed how toxic such substances are for the cytoplasmic organelles of oocytes and pedicel cells. These compounds can change the morphophysiology of germ and somatic cells, consequently influencing their viability and, therefore, confirming that the ricinoleic acid esters from castor oil are a promising substance in the control of R. sanguineus. PMID:23086445

  8. Repellency of the oily extract of neem seeds (Azadirachta indica) against Varroa destructor (Acari: Varroidae).

    Science.gov (United States)

    González-Gómez, Rebeca; Otero-Colina, Gabriel; Villanueva-Jiménez, Juan A; Peña-Valdivia, Cecilia Beatriz; Santizo-Rincón, José Antonio

    2012-03-01

    A crude oil extract of neem seed (Azadirachta indica, Sapindales: Meliaceae) was evaluated for repellency on Varroa destructor Anderson and Trueman. Burgerjon's tower was used to spray worker bee pupae with 0.0, 0.3, 0.7, 1.3, 2.6, 5.3, 10.6 and 21.1% neem extract concentrations. Sprayed pupae were attached to observation arenas and incubated at 32 ± 2°C and 70 ± 10% RH. The ability of V. destructor to locate and feed on treated and untreated pupae was monitored from 30 min to 72 h after spray. Higher and more stable repellency was achieved with 2.6, 5.3, 10.6 and 21.1% neem extract. At the highest concentration, 98% of V. destructor were prevented to settle on bee pupae, resulting in 100% V. destructor mortality at 72 h. PMID:22270115

  9. Effects of gamma radiation on spermatogenesis and fertility of male Amblyomma americanum (Acari: Ixodidae)

    International Nuclear Information System (INIS)

    Amblyomma americanum males were treated with 0.5, 1, 2, 3, 4, 8, and 16 krad of gamma radiation. Testes of ticks treated with 2, 3, 4, 8, and 16 krad were smaller than those of ticks irradiated at lower levels and controls. No recognizable alteration in timing of spermatogenesis was noted among the different radiation groups, but severe breakdown and depletion of germinal cells was noted at 4, 8, and 16 krad. Percent hatch of larvae from crosses of irradiated males and untreated females decreased with increasing radiation level. No hatch was observed from eggs of females mated to males treated at 2 krad or higher

  10. Assessment of potential fumigants to control Chaetodactylus krombeini (Acari: Chaetodactylidae) associated with Osmia cornifrons (Hymenoptera: Megachilidae).

    Science.gov (United States)

    White, Joseph B; Park, Yong-Lak; West, Todd P; Tobin, Patrick C

    2009-12-01

    With the recent decline of honey bees, Apis mellifera (L.) (Hymenoptera: Apidae), there is a need for alternative or supplemental crop pollinators, such as Osmia cornifrons (Radoszkowski) (Hymenoptera: Megachilidae). However, O. cornifrons propagation could be impeded by a cleptoparasitic mite, Chaetodactylus krombeini Baker. We investigated the effects of formic acid and wintergreen oil on mortality of C. krombeini hypopi and O. cornifrons adults by determining the lethal concentration of each compound on each species. On average, >4.8 and >1.8 h were required to cause mortality in O. cornifrons adults when 176.7 ppm of formic acid and wintergreen oil, respectively. Estimates of LC50 for C. krombeini hypopi treated with formic acid and wintergreen oil were 54.3 and 271.3 ppm, respectively. This study showed that C. krombeini could be controlled effectively without inducing O. cornifrons adult mortality based on concentration and duration of fumigation. PMID:20069836

  11. Morphometric Study on Male Specimens of Hyalomma anatolicum (Acari: Ixodidae in West of Iran

    Directory of Open Access Journals (Sweden)

    A Hosseini

    2011-12-01

    Conclusion: Morphometric variation in Hyalomma spp is poorly studied. The variation in range and quantity of the mor­phometric parameters of H.anatolicum ‎underlies that the correct recognition and key construction for Hyalomma spe­cies dependes ‎on a complement morphometric study on the other species.

  12. Ecosystemic, climatic and temporal differences in oribatid communities (Acari: Oribatida) from forest soils.

    Science.gov (United States)

    Corral-Hernández, E; Balanzategui, I; Iturrondobeitia, J C

    2016-08-01

    Oribatid mite communities from 18 natural autochthonous forest soils in the Basque Country, belonging to five forest types, distributed along an ombrothermic gradient of five climatic regions were broadly studied. Forest type and climatic region together (45 % of the total variability) were important factors influencing the oribatid community. The local scale variable (forest type, 28 %) was about as determinant a factor as the regional scale (climatic region, 26 %), though together they accounted for just 9 %. By contrast, the influence of spatial distribution (geography) was not significant by itself but played an important role as a co-variable. Differences in community indices were detected only for species abundances, with holm oak showing the highest oribatid density and beech the lowest. The effect of the passage of time on oribatid communities was also analyzed by comparing recent communities to those of 19-26 years ago in the same forests. The community indices are influenced by the course of time when separate periods of time are compared. Although the recently studied forests apparently show the same conservational conditions as those studied in the past, they are less diverse. PMID:27193341

  13. Two new species of Neoribates (Neoribates Berlese, 1914 from China (Acari, Oribatida, Parakalummidae

    Directory of Open Access Journals (Sweden)

    Liang, W.Q.

    2013-06-01

    Full Text Available Two new oribatid mite species, Neoribates (N. cheni and Neoribates (N. particula spp. nov. are described from soil and litter of bamboo and under moss from China. Neoribates (N. cheni sp. nov. is morphologically most similar to Neoribates (N. spindleformis Ermilov, 2012 but differs from it in the number of leg claws and the position of epimeral setae. Neoribates (N. particula sp. nov. is morphologically most similar to Neoribates (N. gracilis Travé, 1972 but differs from it in the shape and size of rostral and lamellar setae, and the position of adanal setae ad3.

  14. New and little known oribatid mites from Madagascar (Acari: Oribatida. I.

    Directory of Open Access Journals (Sweden)

    Mahunka, S.

    2010-06-01

    Full Text Available A list of the newly studied and identified oribatids from Madagascar (Malagasy Republic is given. Altogether 17species are mentioned from several sites of the island including four new species and a new subspecies belonging in the familiesSteganacaridae, Oppiidae and Austrachipteriidae, respectively. Two species, Eniochthonius sumatranus Mahunka, 1989 andCultroribula bicuspidata Mahunka, 1978 are recorded for the first time from Madagascar. With 25 figures.

  15. New Uropodina records and species from the Korean Peninsula (Acari: Mesostigmata

    Directory of Open Access Journals (Sweden)

    Kontschán, J.

    2012-12-01

    Full Text Available Thirteen Mesostigmata species are recorded from the Korean Peninsula. Two of them Nenteria koreana and Leonardiella koreana spp. nov. are new to science, and further eleven species are recorded for the first time from the Korean Peninsula.

  16. Phytoseiid mites (Acari, Mesostigmata from the rest areas of Hungarian highways

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    Kontschán, Jenő

    2014-06-01

    Full Text Available The mesostigmatid mite family Phytoseiidae was surveyed in rest areas of Hungarian highways by examination of leaves collected from arboreal plants. All together 15 species, ca. 20 % of the Hungarian Phytoseiid fauna were recorded. Seven species were collected from the ring highway around Budapest (M0, ten species were found alongside the northwestern highway (M1, six-six species were recorded from the north-eastern and south-eastern highways (M3 and M5, and five species from the area of south-western highway (M7, finally two species were found on the newly built southern highway (M6. Euseius finlandicus (Oudemans, 1915 was present in most of the sampling sites, while other common species were Phytoseius macropilis (Banks, 1909; Kampimodromus aberrans (Oudemans, 1930; Neoseiulella aceri (Collyer, 1957 and Typhlodromus (Typhlodromus tiliae Oudemans, 1929. Typhloseiulus peculiaris (Kolodochka, 1980 was shown at the first time from Hungary in the framework of our study, thus a short description and new illustrations are given to this species.

  17. Phytoseiid mites (Acari, Mesostigmata) from the rest areas of Hungarian highways

    OpenAIRE

    Kontschán, Jenő; Karap, Anita; Kiss, Balázs

    2014-01-01

    The mesostigmatid mite family Phytoseiidae was surveyed in rest areas of Hungarian highways by examination of leaves collected from arboreal plants. All together 15 species, ca. 20 % of the Hungarian Phytoseiid fauna were recorded. Seven species were collected from the ring highway around Budapest (M0), ten species were found alongside the northwestern highway (M1), six-six species were recorded from the north-eastern and south-eastern highways (M3 and M5), and five species from t...

  18. Eriophyoid mites (Acari: Prostigmata: Eriophyoidea) from Turkey: description of five new species.

    Science.gov (United States)

    Kiedrowicz, Agnieszka; Denizhan, Evsel; Bromberek, Klaudia; Szydło, Wiktoria; Skoracka, Anna

    2016-01-01

    Five new eriophyoid mite species (Eriophyidae) from Turkey are described and illustrated in this paper: Aceria vanensis n. sp., Aceria onosmae n. sp., Aculus lydii n. sp., Aculus gebeliae n. sp. and Aculus spectabilis n. sp.. The descriptions are based on the morphology of females collected from weedy plants, respectively: Amaranthus retroflexus L. (Amaranthaceae), Onosma isauricum Boiss. et Heldr. (Boraginaceae), Hypericum lydium Boiss. (Hypericaceae), Lotus gebelia Vent. (Fabaceae) and Stachys spectabilis Choisy ex DC. (Lamiaceae). The new species were found to be vagrant on their host plants with no visible damage symptoms observed. PMID:27395550

  19. Assessing the effects of Bt-maize pollen on Typhlodromus pyri (Acari: Phytoseiidae)

    Czech Academy of Sciences Publication Activity Database

    Zemek, Rostislav; Vávrová, Z.

    Vol. 33. Montfavet : IOBC/WPRS, 2008 - (Romeis, J.; Meissle, M.; Sanvido, O.), s. 145-148 ISBN 978-92-9067-207-4. [Proceedings of the third meeting on Ecological Impact Genetically Modified Organisms . Warsaw (PL), 23.05.2008-25.05.2008] R&D Projects: GA AV ČR IAA6007303 Institutional research plan: CEZ:AV0Z50070508 Keywords : risk assessment * Cry1 Ab * predatory mites Subject RIV: GF - Plant Pathology, Vermin, Weed, Plant Protection

  20. New species of the superfamily Phthiracaroidea (Acari, Oribatida) from the Afrotropical Region

    Czech Academy of Sciences Publication Activity Database

    Niedbala, W.; Starý, Josef

    2015-01-01

    Roč. 56, č. 1 (2015), s. 39-49. ISSN 1681-5556 Institutional research plan: CEZ:AV0Z60660521 Institutional support: RVO:60077344 Keywords : Tanzania * Madagascar * Phthiracaridae * taxonomy * new species. Subject RIV: EG - Zoology Impact factor: 0.464, year: 2014

  1. The next new species of .i.Notophthiracarus./i. Ramsay, 1966 (Acari, Oribatida, Phthiracaroidea) from Madagascar

    Czech Academy of Sciences Publication Activity Database

    Niedbala, W.; Starý, Josef

    2015-01-01

    Roč. 56, č. 1 (2015), s. 63-73. ISSN 1681-5556 Institutional research plan: CEZ:AV0Z60660521 Institutional support: RVO:60077344 Keywords : Madagascar * new species * oribatid mites * Phthiracaridae * taxonomy Subject RIV: EG - Zoology Impact factor: 0.464, year: 2014

  2. Antarctic Halacaridae (Acari, new records, these species characteristics and an updated list of species

    Directory of Open Access Journals (Sweden)

    Bartsch Ilse

    2016-03-01

    Full Text Available Four halacarid species: Agaue agauoides, Agaue parva, Bradyagaue drygalskii, and Halacarus minor have been extracted from bottom samples taken in Admiralty Bay, King George Island, South Shetland Islands, another four, Colobocerasides auster, Halacarus arnaudi, Lohmannella fukushimai, and L. gaussi, from Kapp Norvegia, Atka and Halley Bay, Weddell Sea. Most of these species are widespread around Antarctica and adjacent islands. Diagnostic characters are outlined. An annotated list presents 66 halacarid species reported from south of the Antarctic Polar Front.

  3. Primer registro de Ixodes cookei (Acari: Ixodidae) para México

    OpenAIRE

    Griselda Montiel Parra; Helxine Fuentes Moreno; Margarita Vargas

    2007-01-01

    En este estudio se aportan los primeros datos de la garrapata Ixodes cookei Packard, 1869 en México. Un macho, 7 larvas y 15 ninfas se recolectaron en los estados de Nuevo León y Veracruz. Además, se registra al cacomixtle Bassariscus astutus como un nuevo huésped.

  4. Rickettsial infection in ticks (Acari: Ixodidae) of wild animals in midwestern Brazil.

    Science.gov (United States)

    Witter, Rute; Martins, Thiago F; Campos, Artur K; Melo, Andréia L T; Corrêa, Sandra H R; Morgado, Thaís O; Wolf, Rafael W; May-Júnior, Joares A; Sinkoc, Afonso L; Strüssmann, Christine; Aguiar, Daniel M; Rossi, Rogério V; Semedo, Thiago B F; Campos, Zilca; Desbiez, Arnaud L J; Labruna, Marcelo B; Pacheco, Richard C

    2016-04-01

    Ticks collected in the last two decades from free-living and captive wild animals from 28 municipalities of the Brazilian state of Mato Grosso were identified and tested using molecular methods for the presence of rickettsial agents. A total of 4467 ticks (229 larvae, 1676 nymphs, 1565 males, 997 females) representing 27 ixodid species were collected from 235 species of amphibians, reptiles, birds, and mammals from three different ecoregions (Pantanal, Cerrado, and Amazonia). The species Amblyomma parkeri, Amblyomma romitii, Amblyomma varium and Ixodes luciae are reported for the first time in the state of Mato Grosso. Amongst 538 ticks tested by molecular methods for rickettsial infection, we detected 'Candidatus Rickettsia amblyommii' infecting Amblyomma cajennense sensu stricto and Amblyomma coelebs, Rickettsia sp. strain Atlantic rainforest infecting Amblyomma ovale, Rickettsia sp. strain NOD infecting Amblyomma nodosum, and 'Candidatus Rickettsia andeanae' infecting Amblyomma sculptum. Our results represent an impressive expansion of knowledge on tick fauna and rickettsiae and are essential for understanding the ecology of ticks and tick-borne diseases in the Neotropical region, particularly in midwestern Brazil. PMID:26775021

  5. Comparative life table analysis of Tetranychus urticae (Acari: Tetranychidae) on 14 soybean genotypes

    Institute of Scientific and Technical Information of China (English)

    Amin Sedaratian; Yaghoub Fathipour; Saeid Moharramipour

    2011-01-01

    The life table parameters of two-spotted spider mite (TSSM), Tetranychus urticae Koch, on 14 soybean genotypes (Sari, Sahar, Tellar, Zane, Ks3494, L17, Dpx, 032,033, Clark, Hill, I27, Tms and Williams) were evaluated at 28 ± 1℃, 65% ± 5% RH and a photoperiod of 16 ∶ 8 h L ∶ D. The survivorship data (lx) of adult females were fitted to the Weibull frequency distribution model in all genotypes tested. Based on the Weibull parameters, the survival curve was type Ⅰ on all genotypes, which indicated that the mortality mostly occurred in old individuals. Furthermore, two mathematical models (Analytis and Enkegaard) were fitted to age-specific fecundity data (mx). The highest intrinsic rate of increase (rm) was recorded on L17 (0.392) and the lowest values of this parameter were obtained on Tms (0.233), Hill (0.236), 032 (0.236), I27 (0.237) and Clark (0.240). In addition, net reproductive rate (R0) and finite rate of increase (λ) of the TSSM had the highest value on L17 as 45.521 and 1.475, respectively. The lowest values of these parameters were recorded on Tms as 12.149 and 1.258, respectively. Doubling time (DT)varied significantly on different genotypes and the shortest and longest values of this period were obtained on L17 and 032, respectively. Our findings revealed that Tms, Hill,032, I27 and Clark were less suitable genotypes, suggesting that they are more resistant to the TSSM than the other genotypes.

  6. Preliminary survey of ticks (Acari : Ixodidae on cattle in northern Sudan

    Directory of Open Access Journals (Sweden)

    D.A. Salih

    2004-11-01

    Full Text Available In a cross sectional survey conducted during the period June 2001 to July 2002, the geographical distribution of ticks on cattle in the Sudan was determined. Seventeen locations were surveyed from Northern, Central, Eastern, Western, Blue Nile and White Nile Provinces. Total body collections of ticks were made from 20 cattle at each location. Four tick genera and 11 species were identified. The tick species collected included Amblyomma lepidum, Amblyomma variegatum, Boophilus decoloratus, Hyalomma anatolicum anatolicum, Hyalomma dromedarii, Hyalomma impeltatum, Hyalomma marginatum rufipes, Hyalomma truncatum, Rhipicephalus evertsi evertsi, Rhipicephalus sanguineus group and Rhipicephalus simus simus. Major ecological changes have occurred due to extensive animal movement, deforestation, desertification and establishment of large mechanized agricultural schemes. These factors have certainly affected the distribution of ticks and tick-borne diseases in the Sudan. The absence of A. variegatum and A. lepidum in northern Sudan was not surprising, since these tick species are known to survive in humid areas and not in the desert and semi-desert areas of northern Sudan. The absence of B. annulatus in northern and central Sudan is in accordance with the finding that this tick species is restricted to the southern parts of the central Sudan. The presence of H. anatolicum anatolicum in Um Benin in relatively high abundance is an interesting finding. The present finding may indicate that the southern limit of this species has changed and moved southwards to latitude 13o N. It is concluded that major changes in tick distribution have taken place in the Sudan

  7. Panonychus from Georgia: survey, taxonomical status and redescription of P. hadzhibejliae (Reck, 1947) (Acari, Tetranychidae).

    Science.gov (United States)

    Arabuli, Tea; Çobanoglu, Sultan; Auger, Philippe

    2016-01-01

    A survey of Panonychus species was undertaken across Georgia from 2005 to 2014 on various host plants, revealing three species: Panonychus citri (McGregor, 1916), Panonychus hadzhibejliae (Reck, 1947) and Panonychus ulmi (Koch, 1836). New hosts for P. ulmi and P. citri are recorded, Buxus sempervirens, Hedera colchica and Prunus laurocerasus for P. ulmi and Ficus carica for P. citri, whereas P. hadzhibejliae was only found on F. carica. The newly collected material also allowed us to investigate the taxonomical status of P. hadzhibejliae. The comparison of P. hadzhibejliae with the two closely related species sampled in the survey, P. ulmi and P. citri, and with data of P. caricae found in the literature, shows that P. hadzhibejliae is a valid species. It can be separated from the three other Panonychus species without ambiguity especially using the female dorsal setae length in combination with the ratio between the length of the female dorsal opisthosomal f2 and h1 setae and the ratio between the palptarsal terminal eupathidium su and the related solenidion ω. A redescription of P. hadzhibejliae is provided including the male and some morphological characters, measurements and drawings of the female that were omitted in the original description. A key to the world species of Panonychus is also proposed. PMID:27395141

  8. Three new species from the subfamily Phyllocoptinae (Acari, Trombidiformes, Eriophyidae in Iran

    Directory of Open Access Journals (Sweden)

    Parisa Lotfollahi

    2014-07-01

    Full Text Available Three new eriophyid species (Phyllocoptinae, Shevtchenkella denticulata sp. n., Notallus pestehae sp. n. and Echinacrus ruthenicus sp. n., were described from Eryngium thyrsoideum Boiss. (Apiaceae, Pistacia vera L. (Anacardiaceae and Lycium ruthenicum Murray (Solanaceae, respectively. All the three new species were collected from southwest of the East Azerbaijan province, Iran in 2011. It is the first record of an eriophyoid mite collected from E. thyrsoideum and L. ruthenicum and the first record of Notallus from Anacardiaceae plant family.

  9. Three new species from the subfamily Phyllocoptinae (Acari, Trombidiformes, Eriophyidae) in Iran.

    Science.gov (United States)

    Lotfollahi, Parisa; de Lillo, Enrico; Irani-Nejad, Karim Haddad

    2014-01-01

    Three new eriophyid species (Phyllocoptinae), Shevtchenkella denticulata sp. n., Notallus pestehae sp. n. and Echinacrus ruthenicus sp. n., were described from Eryngium thyrsoideum Boiss. (Apiaceae), Pistacia vera L. (Anacardiaceae) and Lycium ruthenicum Murray (Solanaceae), respectively. All the three new species were collected from southwest of the East Azerbaijan province, Iran in 2011. It is the first record of an eriophyoid mite collected from E. thyrsoideum and L. ruthenicum and the first record of Notallus from Anacardiaceae plant family. PMID:25147456

  10. Three new species from the subfamily Phyllocoptinae (Acari, Trombidiformes, Eriophyidae) in Iran

    OpenAIRE

    Parisa Lotfollahi; Enrico de Lillo; Karim Haddad Irani-Nejad

    2014-01-01

    Abstract Three new eriophyid species (Phyllocoptinae), Shevtchenkella denticulata sp. n., Notallus pestehae sp. n. and Echinacrus ruthenicus sp. n., were described from Eryngium thyrsoideum Boiss. (Apiaceae), Pistacia vera L. (Anacardiaceae) and Lycium ruthenicum Murray (Solanaceae), respectively. All the three new species were collected from southwest of the East Azerbaijan province, Iran in 2011. It is the first record of an eriophyoid mite collected from E. thyrsoideum and L. ruthenicum an...

  11. Ticks (Acari: Ixodidae on wild animals from the Porto-Primavera Hydroelectric power station area, Brazil

    Directory of Open Access Journals (Sweden)

    Marcelo B Labruna

    2002-12-01

    Full Text Available From June 2000 to June 2001, a total of 741 ticks were collected from 51 free-living wild animals captured at the Porto-Primavera Hydroelectric power station area, located alongside an approximately 180 km course of the Paraná river, between the states of São Paulo and Mato Grosso do Sul, comprising 9 species of 3 genera: Ambly-omma (7 species, Boophilus (1 and Anocentor (1. A total of 421 immature Amblyomma ticks were reared in laboratory until the adult stage, allowing identification of the species. A. cajennense was the most frequent tick species (mostly immature stages collected on 9 host species: Myrmecophaga tridactyla, Tamandua tetradactyla,Cerdocyon thous, Puma concolor,Tayassu tajacu, Mazama gouazoubira,Hydrochaeris hydrochaeris,Alouatta caraya, Cebus apella. Other tick species were less common, generally restricted to certain host taxa.

  12. Feather mites (Acari: Astigmata) and body condition of their avian hosts: a large correlative study

    OpenAIRE

    Galván, Ismael; Aguilera, Eduardo; Atiénzar, Francisco; Barba, Emilio; José L Cantó; Blanco, Guillermo; Cortés, Verónica; Óscar, Frías; Vögeli, Matthias; Jovani, Roger

    2012-01-01

    Feather mites are arthropods that live on or in the feathers of birds, and are among the commonest avian ectosymbionts. However, the nature of the ecological interaction between feather mites and birds remains unclear, some studies reporting negative effects of feather mites on their hosts and others reporting positive or no effects. Here we use a large dataset com- prising 20 189 measurements taken from 83 species of birds collected during 22 yr in 151 localities from seven countries in Europ...

  13. Fundamental aspects of genetic control of the two-spotted spider mite Tetranychus urticae (Acari: Tetranychidae)

    International Nuclear Information System (INIS)

    Radiobiological properties of Tetranychus urticae and other topics of genetic control have been evaluated. The induction by X-rays or fast neutrons of dominant lethals in mature sperm and of dominant lethals and recessive lethals in prophase-1 oocytes and the induction by both radiation types of chromosome mutations, recessive lethals and factors causing F1-infertility in sperm and oocytes, have been studied. From the results the optimal dose, radiation type and germ cell type could be chosen for obtaining either fully sterile males or substerile males, producing fully infertile F1-females. Also the most favourable conditions were determined for the induction of chromosome mutations with the lowest frequency of linked recessive lethals. The radiobiological properties of holokinetic chromosomes are extensively discussed. The successful displacement of the standard karyotype by a radiation arranged karyotype is presented and discussed in its relevance for practical application. (Auth./C.F.)

  14. Ticks (Acari: Ixodidae) collected from small and medium-sized Kansas mammals.

    Science.gov (United States)

    Brillhart, D B; Fox, L B; Upton, S J

    1994-05-01

    Seven species of hard-bodied ticks were collected from 20 species of small and medium-sized mammals in Kansas; Amblyomma americanum L., Dermacentor variabilis (Say), Haemaphysalis leporispalustris (Packard), Ixodes cookei Packard, I. kingi Bishopp, I. sculptus Neumann, and I. texanus Banks. Dermacentor variabilis was found statewide, A. americanum only in the eastern one-third of the state, and the Ixodes spp. and H. leporispalustris were widely scattered. The most common tick found was D. variabilis, both by itself and in association with other ticks. Mammals that ticks were collected from included Canis latrans Say, Cynomys ludovicianus ludovicianus (Ord), Didelphis virginianus Kerr, Geomys bursarius (Shaw), Lynx rufus (Schreber), Marmota monax bunkeri Black, Mephitis mephitis (Schreber), Microtus ochrogaster (Wagner), Mus musculus L., Peromyscus leucopus (Rafinesque), P. maniculatus (Wagner), Procyon lotor hirtus Nelson and Goldman, Reithrodontomys megalotis (Baird), Sciurus niger rufiventer Geoffroy, Sigmodon hispidus texianus (Audubon and Bachman), Sylvilagus floridanus (J. A. Allen), Taxidea taxus taxus (Schreber), and Vulpes velox velox (Say). PMID:8057327

  15. Ixodes dammini (Acari: Ixodidae) infestation on medium-sized mammals and blue jays in northwestern Illinois.

    Science.gov (United States)

    Mannelli, A; Kitron, U; Jones, C J; Slajchert, T L

    1993-09-01

    High prevalence of infestation of five species of medium-sized mammals and blue jays, Cyanocitta cristata (L.), by immature Ixodes dammini Spielman, Clifford, Piesman and Corwin was found in Castle Rock State Park in northwestern Illinois during May-August 1991. Raccoons, Procyon lotor L., and opossums, Didelphis virginiana Kerr, were infested with the highest larval densities and were trapped primarily in bottomland forest and ecotone habitats. All species had similar nymphal densities, except the eastern cottontails, Sylvilagus floridanus Allen, which were infested with fewer nymphs. Infestation by I. dammini is reported for the first time for fox squirrels, Sciurus niger E. G. St. Hilaire, and for the first time in the midwestern United States for blue jays, C. cristata. These two species were hosts for nymphs in upland forest habitat. Molting rates varied among ticks that fed on different host species and among larvae that fed on individuals of the same species. Molting rate is proposed as an important factor in determining the relative importance of a host species to I. dammini population dynamics. PMID:8254647

  16. Host utilization and seasonal occurrence of Dermacentor species (Acari:Ixodidae) in Missouri, USA.

    Science.gov (United States)

    Kollars, T M; Oliver, J H; Masters, E J; Kollars, P G; Durden, L A

    2000-08-01

    A total of 3,235 Dermacentor variabilis (Say) specimens were collected from birds, mammals, and by dragging vegetation, and 2,683 D. albipictus (Packard) ticks were collected from deer from 1993 to 1996. Peak seasonal occurrence of adult D. variabilis was from May through July with a precipitous decrease in August. Nymphal D. variabilis populations peaked in June. Peak activity of larvae was bimodal, with one activity peak during late summer (September) and a second peak in winter or early spring. The raccoon, Procyon lotor (L.), was the principal host of adults followed by the Virginia opossum, Didelphis virginiana Kerr. Rodents and the eastern cottontail rabbit, Sylvilagus floridanus (J. A. Allen), were the primary hosts of nymphs. The marsh rice rat, Oryzomys palustris (Harlan), was the principal host of larvae followed by the pine vole, Microtus pinetorum (Le Conte), and white-footed mouse, Peromyscus leucopus (Rafinesque). All stages of D. albipictus were found only on white-tailed deer, Odocoileus virginianus (Zimmermann). Numbers of adult and nymphal D. albipictus peaked in November, whereas larvae peaked in September. PMID:11201355

  17. Seasonal activity and host associations of Ixodes scapularis (Acari: Ixodidae) in southeastern Missouri.

    Science.gov (United States)

    Kollars, T M; Oliver, J H; Kollars, P G; Durden, L A

    1999-11-01

    Based on tick collections recovered from wild vertebrates and by dragging, the seasonal occurrence of adult blacklegged ticks, Ixodes scapularis Say, extended from October through May in southeastern Missouri. Adult activity was bimodal with the higher peak occurring in November followed by a lower peak in February. The activity of immature I. scapularis had the general pattern of that found in the Northeast where Lyme disease is hyperendemic, with larval activity (July) peaking after that of nymphs (May and June). Vertebrates varied in their importance as hosts of I. scapularis. White-tailed deer, Odocoileus virginanus (Zimmerman), and coyotes, Canis latrans Say, were the primary hosts of adult I. scapularis. Broad-headed skinks, Eumeces laticeps (Schneider), and eastern fence lizards, Sceloporus undulatus (Latreille), were the primary hosts of nymphal I. scapularis. The broad-headed skink, 5-lined skink, Eumeces fasciatus (L.), and Carolina wren, Thryothorus ludovicianus (Latham), were the primary hosts of larval I. scapularis. Homeotherms were important hosts of immature I. scapularis, accounting for 30% of nymphs and 39% of larvae collected. The eastern cottontail rabbit, Sylvilagus floridanus (Allen), may play an important role in the epidemiology of Lyme disease in Missouri. Isolates of Borrelia burgdorferi Johnson, Schmid, Hyde, Steigerwalt & Brenner were made from ticks recovered from rabbits, making the cottontail rabbit a key species for further study of the epidemiology of Lyme borreliosis in Missouri. PMID:10593072

  18. Some water mites (Acari, Hydrachnidia from Caldera de Taburiente National Park (La Palma, Canary Islands

    Directory of Open Access Journals (Sweden)

    Valdecasas, A. G.

    2002-12-01

    Full Text Available Protzia cf. lata, Lebertia fimbriata Thor, 1899; Limnesia martianezi Lundblad, 1962; Atractides gomerae Lundblad, 1962 are mentioned for the first time for the island of La Palma: Feltria menzeli Walter, 1922 and Aturus atlantica Lundblad, 1942 for the first time in the Canary islands. It is the first record of the genus Feltria Koenike, 1892 in Macaronesia.

    Protzia cf. lata, Lebertia fimbriata Thor, 1899; Limnesia martianezi Lundblad, 1962; Atractides gomerae Lundblad, 1962 han sido encontradas por primera vez en la isla de La Palma: Feltria menzeli Walter, 1922 y Aturus atlantica Lundblad, 1942 son nueva cita para las islas Canarias y es la primera vez que se registra el género Feltria Koenike, 1892 en Macaronesia.

  19. Influence of gamma radiation for controlling Brevipalpus phoenicis (Acari: Tenuipalpidae) (Geijskes, 1939) in oxygen atmosphere

    Energy Technology Data Exchange (ETDEWEB)

    Machi, Andre R., E-mail: rica_machi@hotmail.com [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN- SP), Sao Paulo, SP (Brazil); Arthur, Valter, E-mail: arthur@cena.usp.br [Centro de Energia na Agricultura (CENA/USP), Piracicaba, SP (Brazil)

    2013-07-01

    Brevipalpus phoenicis mite are controlled across of solutions acaricides, which are chemicals and leave residues in addition there is the difficulty of an effective pulverization due to the small size of the mite, the objective of this study was to evaluate of the influence of oxygen combined with gamma radiation on B.phoenicis as alternative control. Were used 70 mites per arena in 9 reps on 3 treatments at doses of 0 (control), 200 and 300 Gy. For irradiation, the leaves containing the mites, were cut and placed on bottles with bladder tied with ribbons and strings, before was put pure oxygen and the bottle was then sealed, these were taken to a gamma irradiator of Cobalt 60-type Gammacell 220, under a dose rate of 0.381 kGy/hour located in the CENA/USP. Was evaluated daily (eggs, nymphs and adults) of the mites observed viability, fertility and mortality across of the analysis of variance design with completely randomized design using the Statistical Analysis System (SAS) version 9.2® and by the Tukey test, the verification of means. After 22 days of irradiation the hatchability in 200 Gy dose was 41% after 3 days and 57% in control dose, this differed statistically of the other doses, where the nymphs arrived to the adult stage, which did not occurred in the 200 Gy dose and higher due to mutations, generated by the gamma radiation. In 300 Gy not was observed the presence of nymphs and eggs, being the sterilizing dose for all stages of the B.phoenicis. (author)

  20. Effect of Crude Plant Extracts on Mushroom Mite, Luciaphorus sp. (Acari: Pygmephoridae)

    OpenAIRE

    Prapassorn Bussaman; Chirayu Sa-uth; Paweena Rattanasena; Angsumarn Chandrapatya

    2012-01-01

    The use of plant extracts for controlling agricultural pests has become increasingly popular in the recent years. Mushroom mite, Luciaphorus sp., is a destructive pest of several mushroom species and has been reported to cause severe loss of mushroom cultivation in many settings. The efficacies of 23 rhizome and leaf extracts were evaluated against female adults of Luciaphorus sp. At 3 days after treatment, the rhizome extracts derived from Curcuma xanthorrhiza Roxb. and Zingiber montanum (Ko...

  1. Effect of Crude Plant Extracts on Mushroom Mite, Luciaphorus sp. (Acari: Pygmephoridae

    Directory of Open Access Journals (Sweden)

    Prapassorn Bussaman

    2012-01-01

    Full Text Available The use of plant extracts for controlling agricultural pests has become increasingly popular in the recent years. Mushroom mite, Luciaphorus sp., is a destructive pest of several mushroom species and has been reported to cause severe loss of mushroom cultivation in many settings. The efficacies of 23 rhizome and leaf extracts were evaluated against female adults of Luciaphorus sp. At 3 days after treatment, the rhizome extracts derived from Curcuma xanthorrhiza Roxb. and Zingiber montanum (Koenig Link ex Dietr. were found to have very strong acaricidal activities, resulting in 100% mite mortality, followed by Curcuma longa Linn. (98.89%, Zingiber zerumbet (L. Smith. (97.78%, Kaempferia parviflora Wall. Ex Baker (88.89%, and Zingiber officinale Roscoe. (84.44%. The leaf extracts of Ocimum sanctum Linn. and Melissa officinalis L. also resulted in 100% mite mortality 3 days after treatment, while the other leaf extracts induced mite mortality only below 70%. The results suggested that rhizome extracts of C. xanthorrhiza and Z. montanum and leaf extracts of O. sanctum and M. officinalis have a great potential for future development as natural acaricides for controlling Luciaphorus sp.

  2. Arrhenotoky and oedipal mating in the northern fowl mite (Ornithonyssus sylviarum (Acari: Gamasida: Macronyssidae

    Directory of Open Access Journals (Sweden)

    McCulloch John B

    2012-12-01

    Full Text Available Abstract Background The northern fowl mite (NFM; Ornithonyssus sylviarum is a blood-feeding ectoparasite of birds and a major pest of poultry in the United States. Mite populations spread rapidly in commercial flocks, reach peak burdens of >70,000 mites per bird and have developed resistance to many pesticides. Despite decades as a pest in the United States, the reproductive biology of NFM remains unclear. Based on karyotypes, the NFM has haplodiploid sex determination, which suggests unmated females could produce male offspring (arrhenotoky. Thus, unmated females could disseminate to a new host and initiate an infestation by producing and mating with sons (oedipal mating. Methods We used small capsules to isolate and recover NFM on host chickens. Mites in capsules could blood feed, develop and reproduce, but could not contact other mites. Individual larvae were matured in isolation to produce known, unmated females. We evaluated reproduction of (I previously mated females (i in isolation, or (ii paired with a male, and (II unmated (virgin females in isolation. In each treatment we recorded the number and sexes of offspring produced over time. Results Mated NFM produced female and male offspring in isolation, or when paired with a male. When paired with a male, females produced a female-biased sex ratio of the offspring (F:M ratio ~5:1. Unmated, female NFM produced exclusively male offspring when in isolation. When paired with their sons that had developed to maturity, the "virgin" females were able to mate and subsequently produce female offspring. Conclusions This study found that females with immediate access to sperm produced mostly female offspring. Virgin female NFM initially produced only male offspring and subsequently used oedipal mating to produce female offspring. Using this reproductive system NFM could successfully colonize new hosts as immature, or unmated females. The strong female-biased sex ratio of NFM populations suggests a large proportion of the parasite population is capable of disseminating to new hosts, which is essential for an obligate parasite to persist.

  3. Uropodina species from the Montagne d' Ambre National Park, Madagascar (Acari: Mesostigmata)

    Czech Academy of Sciences Publication Activity Database

    Kontschán, J.; Starý, Josef

    2012-01-01

    Roč. 119, č. 1 (2012), s. 89-98. ISSN 0035-418X Institutional research plan: CEZ:AV0Z60660521 Keywords : acarology * turtle mites * taxonomy * Afrotropical region Subject RIV: EH - Ecology, Behaviour Impact factor: 0.382, year: 2012

  4. A review of Hyalomma scupense (Acari, Ixodidae in the Maghreb region: from biology to control

    Directory of Open Access Journals (Sweden)

    2014-01-01

    Full Text Available Hyalomma scupense (syn. Hyalomma detritum is a two-host domestic endophilic tick of cattle and secondarily other ungulates in the Maghreb region (Africa. This species transmits several pathogens, among which two are major livestock diseases: Theileria annulata and Theileria equi. Various other pathogens are also transmitted by this tick species, such as Anaplasma phagocytophilum and Ehrlichia bovis. Hyalomma scupense is common in sub-humid and semi-arid areas of several regions in the world, mainly in the Maghreb region. In this region, adults attach to animals during the summer season; larvae and nymphs attach to their hosts during autumn, but there is a regional difference in H. scupense phenology. There is an overlap between immature and adult ticks, leading in some contexts to a dramatic modification of the epidemiology of tick-borne diseases. This tick species attaches preferentially to the posterior udder quarters and thighs. Tick burdens can reach 130 ticks per animal, with a mean of 60 ticks. Calves are 70 times less infested than adult cattle. The control can be implemented through six options: (i rehabilitation of the farm buildings by roughcasting and smoothing the outer and inner surfaces of the enclosures and walls. This control option should be recommended to be combined with a thorough cleaning of the farm and its surrounding area. With regard to Theileria annulata infection, this control option is the most beneficial. (ii Acaricide application to animals during the summer season, targeting adults. (iii Acaricide application during the autumn period for the control of the immature stages. (iv Acaricide application to the walls: many field veterinarians have suggested this option but it is only partially efficient since nymphs enter deep into the cracks and crevices. It should be used if there is a very high tick burden or if there is a high risk of tick-borne diseases. (v Manual tick removal: this method is not efficient since the ticks can feed on several other animal species in the farm. This control option can lead to a reduction of the tick population, but not a decrease in tick-borne disease incidence. (vi Vaccination: this control option consists of injecting the protein Hd86; trials have shown a partial effect on nymphs, with no effect on adult ticks. Combination of two of these control options is recommended in regions where there are high burdens of important tick vectors. Further studies are needed to improve our knowledge on this tick species in the Maghreb region, since the number of published studies on Hyalomma scupense in this region is very limited.

  5. Effect of a botanical acaricide on Ixodes scapularis (Acari: Ixodidae) and nontarget arthropods.

    Science.gov (United States)

    Elias, Susan P; Lubelczyk, Charles B; Rand, Peter W; Staples, Joseph K; St Amand, Theodore W; Stubbs, Constance S; Lacombe, Eleanor H; Smith, Leticia B; Smith, Robert P

    2013-01-01

    We tested the effectiveness of the rosemary oil-based insecticide, Eco-Exempt IC2, to control all stages of Ixodes scapularis (Say) in southern Maine. We selected plots in oak-pine forest where I. scapularis is endemic and recorded the abundance of ticks and nontarget arthropods before and after applications of IC2, bifenthrin (a synthetic pyrethroid), and water (reference treatment). Licensed applicators applied high-pressure spray treatments during the summer nymphal and fall adult seasonal peaks. Both acaricides sprayed during the summer nymphal season reduced nymphal I. scapularis/hour to zero. IC2 was as effective as bifenthrin in controlling nymphs through the rest of the nymphal season and also controlled adult ticks 9 mo postspray compared with 16 mo for bifenthrin, and both acaricides reduced larvae through 14 mo postspray. Both acaricides sprayed during the fall adult season reduced adult I. scapularis/hour to zero; IC2 controlled adult ticks 6 mo postspray compared with 1 yr for bifenthrin. Both fall-applied acaricides controlled nymphs 9 mo postspray and reduced larvae up to 10 mo postspray. Impacts on some nontarget arthropods was assessed. Colleoptera, Hymenoptera, and Collembola declined 1 wk postspray in acaricide-treated plots, and in IC2 plots all numbers rebounded by 20 d postspray. For bees and other flower-visiting insects there were no detectable reductions in nests produced, number emerged from nests, or number of foraging visits to flowering plants in IC2 or bifenthrin plots. IC2 was phytotoxic to the leafy portions of select understory plants that appeared to recover by the next growing season. PMID:23427661

  6. The Dermacentor (Acari, Ixodida, Ixodidae) of Mexico: hosts, geographical distribution and new records

    Science.gov (United States)

    Guzmán-Cornejo, Carmen; Robbins, Richard G.; Guglielmone, Alberto A.; Montiel-Parra, Griselda; Rivas, Gerardo; Pérez, Tila María

    2016-01-01

    Abstract Distribution and host data from published literature and previously unpublished collection records are provided for all nine species of the Holarctic tick genus Dermacentor that are known to occur in Mexico, as well as two species that may occur there. Parasite-host and host-parasite lists are presented, together with a gazetteer of collection localities and their geographical coordinates. PMID:27110147

  7. Hosts, seasonal occurrence and life cycle of Rhipicentor nuttalli (Acari: Ixodidae).

    Science.gov (United States)

    Fourie, L J; Horak, I G; Kok, D J; Van Zyl, W

    2002-09-01

    There are only two species worldwide within the genus Rhipicentor, namely Rhipicentor bicornis and Rhipicentor nuttalli and both occur only in Africa. Rhipicentor nuttali has a widespread distribution in South Africa and the present investigation was initiated to elucidate its host preference, seasonality and life cycle. Rock elephant shrews, Elephantulus myurus were examined for ticks at four localities in the Free State Province, one in Gauteng Province and two in Limpopo Province, South Africa. Cape elephant shrews, Elephantulus edwardii were examined at two places in the Western Cape Province, and a single specimen of the bushveld elephant shrew, Elephantulus intufi was examined in central Namibia. Small mammals of other species were also examined at two of these localities. The majority of E. myurus at two sites in the Free State, at the locality in Gauteng and both sites in Limpopo Province were infested with larvae and/or nymphs of R. nuttalli, while the single E. edwardii examined at one site in the Western Cape Province and the single E. intufi examined in Namibia were infested with nymphs of this tick. Not one of the other small animals was infested. Although larvae and nymphs of R. nuttalli were present on E. myurus throughout the year, the former were generally most numerous during the period March to September, and the latter during May to October. The preferred hosts of the adults are domestic dogs, leopards, Panthera pardus and South African hedgehogs, Atelerix frontalis. Adult females engorged on Atelerix frontalis in 16-32 days and, after a preoviposition period of 2-4 days, produced approximately 170,00 eggs during the following 60-70 days. The average incubation period of the eggs was 59 days. Larvae engorged on E. myurus in 4-10 days and moulted to nymphs 12-20 days later. Nymphs required 11-15 days to engorge on E. myurus and moulted to adults 32-47 days later. Allowing 14 days for the exoskeletons and mouthparts of each of the three parasitic stages to harden before they can attach to a host, the life cycle took approximately 214 days to complete in the laboratory. The length of this period, considered in conjunction with the times of maximum seasonal occurrence of the immature stages, indicates that the life cycle probably takes a year to complete in the field. PMID:12356163

  8. Seasonal changes in the fatty acid profile of the tick Ixodes ricinus (Acari, Ixodidae).

    Science.gov (United States)

    Cuber, Piotr; Urbanek, Aleksandra; Naczk, Aleksandra; Stepnowski, Piotr; Gołębiowski, Marek

    2016-06-01

    Fatty acids (FAs) from nymphs, females and males of Ixodes ricinus were analysed by gas chromatography/mass spectrometry. Ticks were collected from May to October 2013. The most abundant FAs were 18:1, 18:0, 16:0 and 18:2 which are also dominant FAs of insects. Adults contained higher concentrations of FAs in general than nymphs because they contain more fat body and probably a thicker layer of epicuticular lipids. Larger quantities of FAs > 20 carbon atoms in the carboxylic chain were present in females, which generally show higher content of lipids essential for oogenesis, whereas there were similar amounts of 14-18 in both sexes. In September and October, ticks contained large concentrations of the majority of FAs except for 18:1, the most abundant one in ticks collected from May through August. Thus, most FAs, especially those with more than 20 C atoms, tend to increase at lower temperatures. PMID:26976134

  9. Infestations of the bont tick Amblyomma hebraeum (Acari: Ixodidae) on different breeds of cattle in Zimbabwe.

    Science.gov (United States)

    Norval, R A; Sutherst, R W; Kerr, J D

    1996-10-01

    Infestations of adults and nymphs of Amblyomma hebraeum were counted on Brahman (Br), Brahman x Simmental (BS), Sanga (Sa) and Hereford (He) steers exposed to infested pastures at Mbizi in southern Zimbabwe in 1986-1987. Herefords were always the most heavily infested, while the Sanga tended to carry the fewest ticks with the Brahman and Brahman x Simmental groups being in between. The ratios of the engorged females on the four breeds were 2.3:1.4:1.4:1.0 for He:Br:BS:Sa. The ratios of the standard nymphs were 2.2:1.4:1.7:1.0 for He:Br:BS:Sa. The results confirm earlier observations in Africa and support the view that there are genetic differences between breeds in the expression of resistance to this tick species. PMID:8952073

  10. Fenvalerate resistance status in Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) from Punjab, India.

    Science.gov (United States)

    Jyoti; Nandi, Abhijit; Singh, Harkirat; Singh, N K; Rath, S S

    2016-09-01

    Larval packet test was used for evaluating the resistance levels in Rhipicephalus (Boophilus) microplus collected from different districts of central plain zone of Punjab state, India against fenvalerate. The regression graphs of probit mortality of larvae plotted against log values of progressively increasing concentrations of fenvalerate were utilized for the estimation of lethal concentration for 50 % (LC50) and 95 % (LC95) values against various field isolates of R. (B.) microplus. The slope of mortality (95 % confidence levels) varied from 0.730 ± 0.097 (0.419-1.043) to 1.455 ± 0.281 (0.558-2.352) and the value of R(2) varied from 0.881 to 0.997. From the regression equation the values of LC50 and LC95 were recorded in range of 184.39-1,338.01 and 3,253.33-112,706.26 ppm, respectively. Among the various tick isolates resistance factors in range of 1.56-54.34 were determined and all field isolates studied were found resistant against fenvalerate. Two field isolates (Jalandhar and Ludhiana) showed level I resistance; three (Patiala, Fatehgarh Sahib and Amritsar) showed level II and Kapurthala isolate showed level IV resistance. The data generated on fenvalerate resistant status will help in judicious use of the drug and formulation of effective tick control strategy for the region. PMID:27605769

  11. Metarhizium anisopliae as a Biological Control Agent Against Hyalomma anatolicum (Acari: Ixodidae

    Directory of Open Access Journals (Sweden)

    M.T. Shigidi

    2013-01-01

    Full Text Available In the Sudan, ticks and Tick-borne Diseases (TBDs with subsequent costs of control and treatment are causing substantial economic loss. Control of ticks is mainly by chemical insecticides. The rising environmental hazards and problem of resistance has motivated research on biological agents as alternative methods of control. The present study aims at controlling livestock ticks using fungi for their unique mode of action besides their ability to adhere to the cuticle, to germinate and penetrate enzymatically. The study was conducted to evaluate the fungus Metarhizium anisopliae for tick control as an alternative mean to chemical acaricides. Pathogenicity of the fungus was tested on different developmental stages of the tick Hyalomma anatolicum. The fungus induced high mortality to flat immature stages. It, also, affected reproductive potential of the females. Egg laid, hatching percent, fertility and moulting percent of immature stages were significantly (p≤0.05 reduced. It was, also, shown that the fungus had ability to adhere to the cuticle and penetrate the integument of the tick. Conidia of the fungus were isolated from their internal tissues. This phenomenon is important in considering fungi as bioinsecticides. Infection of eggs laid by treated engorged female ticks, with the fungus might demonstrate suggesting transovarian transmission. The use of M. anisopliae to control ticks is discussed.

  12. Infection of Ixodes ricinus (Acari: Ixodidae) by Borrelia burgdorferi sensu lato in North Africa

    Science.gov (United States)

    Zhioua, E.; Bouattour, A.; Hu, C.M.; Gharbi, M.; Aeschliman, A.; Ginsberg, H.S.; Gern, L.

    1999-01-01

    Free-living adult Ixodes ricinus L. were collected in Amdoun, situated in the Kroumiry mountains in northwestern Tunisia (North Africa). Using direct fluorescence antibody assay, the infection rate of field-collected I. ricinus by Borrelia burgdorferi sensu lato was 30.5% (n = 72). No difference in infection rate was observed between male and female ticks. Spirochetes that had been isolated from I. ricinus from Ain Drahim (Kroumiry Mountains) in 1988 were identified as Borrelia lusitaniae (formerly genospecies PotiB2). This is the first identification of a genospecies of Borrelia burgdorferi sensu lato from the continent of Africa.

  13. Infestation by Pyemotes tritici (Acari, Pyemotidae) causes death of stingless bee colonies (Hymenoptera: Meliponina).

    Science.gov (United States)

    Menezes, C; Coletto-Silva, A; Gazeta, G S; Kerr, W E

    2009-01-01

    We report the infestation of stingless bee nests by the mite Pyemotes tritici, which killed four colonies of Tetragonisca angustula and one colony of Frieseomelitta varia in Brazil. The first infected colony, a colony of T. angustula, came from an area between Uberlândia and Araguari, Minas Gerais. The transfer of the mites to the other colonies occurred through the transfer of infected combs and subsequent manipulations. Other colonies in the same meliponary, which had not been manipulated, were not infected. The infestation was terminated by isolating the dead colonies from the meliponary. PMID:19554756

  14. Field evaluation of carbon dioxide baits for sampling Ornithodoros turicata (Acari: Argasidae) in gopher tortoise burrows.

    Science.gov (United States)

    Adeyeye, O A; Butler, J F

    1991-01-01

    Field studies were conducted to assess the reliability of carbon dioxide baits in sampling Ornithodoros turicata Duges. Tick response to about 50 g of dry ice placed at various distances away from tick-infested burrows was monitored over a 2-h period. In addition, tick attraction to different flow rates of carbon dioxide was monitored. Tests were conducted over a 15-mo period, during which seasonal effects on O. turicata response to CO2 were assessed. The efficacy of the baits was evaluated at night and in daytime. Ticks responded to dry ice baits placed up to 8 m away from the burrows. There was no significant difference in the total number of ticks attracted in a 1-h period using 500 to 2,000 ml CO2/min. At night, ticks were attracted to CO2 bits throughout the year except in December and January. By contrast, ticks were attracted to CO2 baits during daytime only between May and mid-December. PMID:1903452

  15. New species of Daidalotarsonemus and Excelsotarsonemus (Acari: Tarsonemidae) from the Brazilian rainforest including new morphological characters

    Science.gov (United States)

    Three new species, Daidalotarsonemus oliveirai Rezende, Lofego & Ochoa, sp. nov.,Excelsotarsonemus caravelis Rezende, Lofego & Ochoa, sp. nov. and E. tupi Rezende, Lofego & Ochoa, sp. nov. are described and illustrated. Measurements for these species are provided, as well as drawings, phase contrast...

  16. A Simulation Model of the Mass Rearing of Tetranychus urticae Koch (Acari: Tetranychidae) on Beans.

    Science.gov (United States)

    Bustos, A; Rodríguez, D; Cure, J R; Cantor, F

    2016-06-01

    The supply of predatory mites as natural enemies is a key component to guarantee the success of biological pest control programs as alternatives to chemical control in commercial crops. To meet the demand for a supply of biologicals, the mass rearing of natural enemies is an option, and the first step must be to develop a standardized system that maximizes the production of prey. One choice for this first step is to use simulation models that can evaluate scenarios that are difficult or complex to address experimentally. In this work, a model was developed to evaluate the current management conditions for the mass rearing of the pest mite Tetranychus urticae Koch. Our aim was to identify alternative scenarios to maximize mite production through mass rearing that could be evaluated in real systems. We assumed that populations of T. urticae were regulated by the conditions of supply-demand theory and modeled the age structure, temperature effects, and individual phenology of T. urticae. The supply-demand theory of resources was used to regulate populations, which involved structured ages and temperature effects for the different stages in the development of individuals. We used the functional response and the paradigm of metabolic pool models to describe resource acquisition and allocation. We demonstrated that 7- to 14-day-old plants infested with 45 or 62 T. urticae/plant could reach 25,000 individuals/plant, being 50% of these preys at the preferred stages by the predator Phytoseiulus persimilis Athias-Henriot. Our theoretical model requires validation in experimental/real systems of mass rearing to better verify the validity of all of the parameters and predictions before commercial implementation. PMID:26943232

  17. Suitability of different pollen as alternative food for the predatory mite Amblyseius swirskii (Acari, Phytoseiidae).

    Science.gov (United States)

    Goleva, Irina; Zebitz, Claus P W

    2013-11-01

    The predacious mite Amblyseius swirskii Athias-Henriot is used as a biological control agent against various pests in greenhouses. Pollen offered as supplementary food is reported to improve their fast establishment and performance. However, the nutritional suitability of different pollens for A. swirskii is not sufficiently known yet. Pollens of 21 plant species were offered to the mites as exclusive food during preimaginal development. Preimaginal mortality and developmental time have been assessed, followed by a life-table analysis of the emerged adults and a calculation of demographic parameters. Amblyseius swirskii can feed exclusively on pollen, but the nutritional value of the pollens differed significantly. Pollens of Lilium martagon and Hippeastrum sp. were toxic, causing 100 % preimaginal mortality, probably due to secondary plant compounds. Hibiscus syriacus pollen was absolutely incompatible for the juvenile and adult mites, possibly due to their external morphology, differing from all the other pollens tested and leading to 100 % preimaginal mortality also. Considering all parameters, feeding on Aesculus hippocastanum, Crocus vernus, Echinocereus sp. and Paulownia tomentosa pollens lead to the best performance of the mites. Feeding on most pollens resulted in no or low preimaginal mortality of A. swirskii, but affected significantly developmental time, adult longevity, and reproduction parameters. Commercial bee pollen was not able to improve life-table parameters compared to pure pollen of the plant species. Pollens of Helianthus annuus, Corylus avellana and a Poaceae mix were less suitable as food source and resulted in a poor performance of all tested parameters. Compared with literature data, 18 pollens tested proved to be a similar or better food source than cattail pollen, qualifying A. swirskii as a positively omnivorous type IV species. Pollens of Ricinus communis and Zea mays can be recommended as supplementary food offered as banker plants, and A. hippocastanum and Betula pendula pollen is recommended to be used as dispersible pollen in greenhouses. PMID:23670826

  18. New records and human parasitism by Ornithodoros mimon (Acari: Argasidae) in Brazil.

    Science.gov (United States)

    Labruna, Marcelo B; Marcili, Arlei; Ogrzewalska, Maria; Barros-Battesti, Darci M; Dantas-Torres, Filipe; Fernandes, André A; Leite, Romario C; Venzal, Jose M

    2014-01-01

    The bat tick Ornithodoros mimon Kohls, Clifford & Jones is currently known by only few reports in Bolivia, Uruguay, Argentina, and the state of São Paulo in southeastern Brazil. Here, we expand the distribution of O. mimon in Brazil to the states of Minas Gerais (southeastern region), Goiás (central-western), Pernambuco, and Rio Grande do Norte (northeastern). Ticks were collected on human dwellings, where there had been repeated complains of tick bites on persons during the night. Tick bites were generally followed by intense inflammatory reactions that lasted for several weeks at the bite site. Bats and opossums were reported to inhabit the attic of the infested houses. In addition, a free-ranging opossum (Didelphis albiventris Lund) trapped in Rio Grande do Norte was found infested by argasid larvae. Based on morphological and/or molecular analysis, all ticks were identified as O. mimon. From one of the sites (Tiradentes, state of Minas Gerais), 20 field-collected nymphs were tested by a battery of polymerase chain reaction protocols targeting tick-borne microorganisms of the genera Babesia, Hepatozoon, Rickettsia, Borrelia, Anaplasma, Ehrlichia, and Coxiella; no tick specimen was found infected by any of these microorganism genera. The current study expands northwards the distribution of O. mimon, which has been shown to be very harmful to humans because of the intense inflammatory response that usually occurs after tick bites. PMID:24605480

  19. Life cycle of Ixodes (Ixodes) loricatus (Acari: Ixodidae) under laboratory conditions.

    Science.gov (United States)

    Schumaker, T T; Labruna, M B; Abel, I dos S; Clerici, P T

    2000-09-01

    The life cycle of Ixodes (Ixodes) loricatus Neumann, reared in the laboratory, is described. Engorged females collected from opossums trapped in the states of Minas Gerais and São Paulo, Brazil, which were used to start the laboratory colonies, were designated as BMG and CSP, respectively. Larval and nymphal ticks from both colonies fed separately on Rattus norvergicus Berkenhout or Calomys callosus Rengger, whereas Didelphis marsupialis L and Didelphis albiventris Lund were used as hosts for BMG and CSP adults, respectively. Biological and developmental data obtained from ticks of both the BMG and CSP colonies that were reared separately for two consecutive generations were compared. The percentage of fed or molted ticks reared on C. callosus was higher than that recorded for ticks fed on R. norvergicus in the majority of the observations. Despite significant differences among several of the biological parameters, the pattern of the life cycles of the two tick colonies was similar. Results indicated that the mean life cycle duration of I. (I.) loricatus was approximately 7 mo from parental oviposition to the occurrence of F1 eggs, regardless of geographic origin or host species. PMID:11004783

  20. Screening and Identification of Antigenic Proteins from the Hard Tick Dermacentor silvarum (Acari: Ixodidae).

    Science.gov (United States)

    Zhang, Tiantian; Cui, Xuejiao; Zhang, Jincheng; Wang, Hui; Wu, Meng; Zeng, Hua; Cao, Yuanyuan; Liu, Jingze; Hu, Yonghong

    2015-12-01

    In order to explore tick proteins as potential targets for further developing vaccine against ticks, the total proteins of unfed female Dermacentor silvarum were screened with anti-D. silvarum serum produced from rabbits. The results of western blot showed that 3 antigenic proteins of about 100, 68, and 52 kDa were detected by polyclonal antibodies, which means that they probably have immunogenicity. Then, unfed female tick proteins were separated by 12% SDS-PAGE, and target proteins (100, 68, and 52 kDa) were cut and analyzed by LC-MS/MS, respectively. The comparative results of peptide sequences showed that they might be vitellogenin (Vg), heat shock protein 60 (Hsp60), and fructose-1, 6-bisphosphate aldolase (FBA), respectively. These data will lay the foundation for the further validation of antigenic proteins to prevent infestation and diseases transmitted by D. silvarum. PMID:26797451

  1. Cross-reactivity between antigens from Amblyomma cajennense and A. hebraeum (Acari : Ixodidae

    Directory of Open Access Journals (Sweden)

    M. Hlatshwayo

    2004-06-01

    Full Text Available Laboratory animals exposed to feeding ticks develop resistance which is reflected by a decline in tick engorgement weight, egg-laying by adults and reduced egg viability. Serum antibodies from these hosts and their reaction with tick antigens have been detected by different methods, including precipitation techniques, immunofluorescent techniques, ELISA and Western blots. However, little is known about the effects of antibodies on ticks that engorge on resistant hosts, or which tissues of the tick body are possibly immunogenic. Some researchers, using immunohistochemistry, have detected host antibodies in the gut, salivary glands and haemolymph of ticks engorged on resistant animals. The same technique has helped considerably in determining antigenic sites or antibody targets in other arthropods. Consequently, immunohistochemistry techniques were used in this study to detect cross-reactivity between sera raised against Amblyomma cajennense (Fabricius, 1787 with Amblyomma hebraeum (Koch, 1844, and vice versa. The results show the existence of shared antigens between the 2 tick species. In general, our results point more to a 1-way cross-reactivity of A. hebraeum with A. cajennense than a reciprocal crossreactivity, suggesting that A. hebraeum is more immunogenic than A. cajennense.

  2. Detachment of hard ticks (Acari: Ixodidae) from hunted sika deer (Cervus nippon).

    Science.gov (United States)

    Tsunoda, Takashi

    2014-08-01

    Ixodid ticks were collected from 13 sika deer, Cervus n.nippon, shot in the Boso Peninsula in central Japan from late February to early March 1999. Haemaphysalis megaspinosa was the most abundant species of the adults collected, although Haemaphysalis longicornis, H. flava, H. kitaokai, H. cornigera, Ixodes ovatus, and Amblyomma testudinarium were also collected. Males were more abundant than females for H. longicornis, H. megaspinosa, H. flava, and H. kitaokai. Ticks that had inserted their hypostome into its host skin (designated attached) were distinguished from those that were detached and on the host's surface. A greater fraction of males than females of all four species were detached. Females were classified in three feeding stages (engorged, partially engorged, and unfed). More H. longicornis and H. megaspinosa unfed female ticks than engorged and partially-engorged female ticks were collected detached. Our results indicated that H. megaspinosa, H. longicornis, H. flava, and H. kitaokai male ticks detached sooner than female ticks after their host died. PMID:24659518

  3. Toxicity and efficacy of selected pesticides and new acaricides to stored product mites (Acari : Acaridida)

    Czech Academy of Sciences Publication Activity Database

    Hubert, J.; Stejskal, V.; Münzbergová, Zuzana; Hajšlová, J.; Arthur, H. F.

    2007-01-01

    Roč. 42, č. 4 (2007), s. 283-290. ISSN 0168-8162 Grant ostatní: GA MŠk(CZ) 2B06099 Institutional research plan: CEZ:AV0Z60050516 Keywords : allergens * pesticides * food Subject RIV: EF - Botanics Impact factor: 1.260, year: 2007

  4. Experimental infection of the bat tick Carios fonsecai (Acari: Ixodidae with the rabies virus

    Directory of Open Access Journals (Sweden)

    Silvana Regina Favoretto

    2013-12-01

    Full Text Available Introduction This study assessed the viability of the rabies virus in the argasid tick Carios fonsecai following experimental infection. Methods The mouse inoculation test (MIT, fluorescent antibody test (FAT and polymerase chain reaction (PCR were used. The rabies virus was administered to ticks via the intra-coelomic route, and the ticks were sacrificed at different time points. Results The inoculated ticks were negative for rabies according to the MIT. Ticks macerated with rabies virus were positive according to the MIT and FAT. All of the tick lots tested by PCR were positive. Conclusions The rabies virus became unviable shortly after its inoculation into tick bodies. Ticks are not likely to play an important role in the epidemiology of rabies.

  5. Multiple paternity in the American dog tick, Dermacentor variabilis (Acari: Ixodidae).

    Science.gov (United States)

    Ruiz-López, María José; Chaskelson, Saskia; Gompper, Matthew E; Eggert, Lori S

    2012-06-01

    The reproductive strategies and variation in reproductive success of ticks are poorly understood. We determined variation in multiple paternity in the American dog tick Dermancentor variabilis . In total, 48 blood-engorged female ticks and 22 male companion ticks were collected from 13 raccoon ( Procyon lotor ) hosts. In the laboratory, 56.3% of blood-engorged females laid eggs, of which 37.0% hatched or showed signs of development. We examined the presence of multiple paternity in the ensuing clutches by genotyping groups of eggs and larvae at 5 microsatellite loci and subtracting the known maternal alleles, thereby identifying male-contributed alleles. Seventy-five percent of the clutches presented multiple paternity, with a mode of 2 fathers siring the clutch. Males associated with the females on the host always sired some offspring. In 1 case, a male was the sire of clutches derived from 2 females, indicating both polygyny and polyandry may occur for this species. These results, combined with those of several other recent studies, suggest that multiple paternity might be frequent for ixodid ticks. PMID:22257158

  6. Isolation of Entomopathogenic Fungi From Soils and Ixodes scapularis (Acari: Ixodidae) Ticks: Prevalence and Methods

    OpenAIRE

    Tuininga, Amy R.; Miller, Jessica L.; Shannon U. Morath; Daniels, Thomas J.; Falco, Richard C.; Marchese, Michael; Sahabi, Sadia; Rosa, Dieshia; Stafford, Kirby C.

    2009-01-01

    Entomopathogenic fungi are commonly found in forested soils that provide tick habitat, and many species are pathogenic to Ixodes scapularis Say, the blacklegged tick. As a first step to developing effective biocontrol strategies, the objective of this study was to determine the best methods to isolate entomopathogenic fungal species from field-collected samples of soils and ticks from an Eastern deciduous forest where I. scapularis is common. Several methods were assessed: (1) soils, leaf lit...

  7. The Dutch species of Limnesia, with ecological and biological notes (Acari: Hydrachnidia)

    OpenAIRE

    Haaren, van, T.; Tempelman, D.

    2009-01-01

    This paper treats nine water mite species of Limnesia now known to occur in the Netherlands. Two species are new for the Netherlands: L. marmorata and L. curvipalpis. Limnesia angustata, previously considered a variety of L. maculata and raised to species level later on in the 20th century, fits the original description of L. marmorata and is similar to the type material of L. marmorata. Therefore L.angustata is synonymised with L. marmorata. A key to the nine species of the Netherlands is gi...

  8. Three new species of ptyctimous mites (Acari: Oribatida: Phthiracaroidea) from Spain

    Czech Academy of Sciences Publication Activity Database

    Niedbala, W.; Starý, Josef

    -, č. 2966 (2011), s. 58-64. ISSN 1175-5326 Grant ostatní: Ministry of Science and Higher Education of Poland(PL) NN303201935 Institutional research plan: CEZ:AV0Z60660521 Keywords : oribatid mites * Phthiracaroidea * descriptions Subject RIV: EH - Ecology, Behaviour Impact factor: 0.927, year: 2011

  9. Evaluation of Metarhizium anisopliae strain F52 (Hypocreales: Clavicipitaceae) for control of Ixodes scapularis (Acari: Ixodidae).

    Science.gov (United States)

    Bharadwaj, Anuja; Stafford, Kirby C

    2010-09-01

    Field efficacy of an emulsifiable concentrate formulation of the entomopathogenic fungus Metarhizium anisopliae strain F52 for the control of Ixodes scapularis nymphs was evaluated at residential sites in northwestern Connecticut in 2007. Two spray applications with two rates, 3.2 x 10(5) and 1.3 x 10(6) spores/cm2, were made: the first on 8-9 May, 2-3 wk before nymphal activity, and the second on 29 June or 2 July when ticks were active. There was no significant difference in nymphal abundance between the three treatment groups (P = 0.490) after the first application, indicating that preseason or early applications are not effective, despite a bioasaay with yellow mealworms that showed spores in the treated areas was infective for at least 1 mo postapplication. By contrast, there was a significant difference in the number of nymphs collected between the treatments and control 3 wk (F = 16.928, df = 2, P anisopliae. The application of M. anisopliae strain F52 could provide another tool for the integrated approach to managing ticks in the residential landscape. PMID:20939382

  10. Repellent activity of fractioned compounds from Chamaecyparis nootkatensis essential oil against nymphal Ixodes scapularis (Acari: Ixodidae).

    Science.gov (United States)

    Dietrich, Gabrielle; Dolan, Marc C; Peralta-Cruz, Javier; Schmidt, Jason; Piesman, Joseph; Eisen, Rebecca J; Karchesy, Joseph J

    2006-09-01

    Preliminary repellent activity of 14 natural products isolated from essential oil components extracted from the heartwood of Alaska yellow cedar, Chamaecyparis nootkatensis (D. Don) Spach., were evaluated against nymphal Ixodes scapularis Say in a laboratory bioassay and compared with technical grade N,N-diethyl-3-methylbenzamide (deet). Four hours after treatment, nootkatone and valencene-13-ol had repellent concentration (RC)50 values of 0.0458 and 0.0712% (wt:vol), respectively; two additional Alaska yellow cedar compounds, nootkatone 1 --> 10 epoxide and carvacrol had reported RC50 values of 0.0858 and 0.112%, respectively. The observed RC50 value for deet was 0.0728% (wt:vol). Although not statistically significantly more active than deet, the ability of these natural products to repel ticks at relatively low concentrations may represent a potential alternative to synthetic commercial repellents. PMID:17017233

  11. Studies on European species of the water mite family Aturidae Thor (Acari: Hydrachnidia).

    Science.gov (United States)

    Gerecke, Reinhard

    2014-01-01

    Selected water mite species of the family Aturidae are revised. The following synonyms are established: Aturus intermedius serrata K. Viets, 1922 = A. asserculatus Walter, 1906; A. lelgioensis Rensburg, 1971 = A. natangensis Protz, 1900; A. oudemansi Besseling, 1932 = A. intermedius Protz, 1900. The proposal of E. Angelier (1965), to synonymize A. paucisetus Motaş & Tanasachi, 1946 with A. brachypus K. Viets, 1934 is rejected. Aturus elongatus Walter, 1927 (described after females, type material heavily damaged) and Ljania bipapillata subterranea Schwoerbel, 1964 (no type material available, no type locality defined) are considered as species incertae. Ljania macilenta longissima Schwoerbel, 1962 is redescribed and elevated to species rank. Two species of the genus Kongsbergia are described as new to science from interstitial habitats in the Central Mediterranean: K. albanorum sp. nov. from Western Sicily and K. jaentschi sp. nov. from Sicily and Sardinia. Woolastookia basilicalabrica sp. nov. is described from mountain streams in Southern Italy. Numerous new records are given, extending noteworthy the known distribution area of several species in Southern Europe. Aturus rotundus Romijn, 1921, Kongsbergia dentata Walter, 1947 and K. simillima K. Viets, 1949 are recorded for the first time from Italy, K. pectinigera Motaş & Tanasachi, 1946 from France and Italy; first records from Corsica are given for Aturus intermedius and A. spatulifer Piersig, 1904. Lectotypes are designated for Aturus asserculatus Walter, 1906; A. asserculatus serratus K. Viets, 1922; A. oudemansi Besseling, 1932. PMID:25082026

  12. Some oribatid mites (Acari, Oribatida from the State of São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Anibal Ramadan Oliveira

    2001-07-01

    Full Text Available A survey was conducted in three sites from northern and mid-eastern regions of the State of São Paulo, Brazil, to determine oribatid mite composition in patches of seasonal semideciduous forest and soybean crop plantation. A list of 52 taxa, 24 at the species level and 28 only at the genus level, is given, 27 of which are new records for the region.

  13. Efeitos do nim sobre tetranychus urticae Koch (Acari: Tetranychidae e os predadores Phytoseiulus macropilis (Banks e Neoseiulus californicus (Mcgregor (Acari: Phytoseiidae Effects of neem on tetranychus urticae Koch (Acari: Tetranychidae and the predators Phytoseiulus macropilis (Banks and Neoseiulus Californicus (Mcgregor (Acari: phytoseiidae

    Directory of Open Access Journals (Sweden)

    Daniele Cristine Hoffmann Schlesener

    2013-03-01

    Full Text Available O objetivo deste trabalho foi avaliar a eficiência de controle e os efeitos adversos de dois produtos à base de nim Azamax® (Azadiractina A/B 12g/L e Neemseto® (Azadiractina A/B, Nimbina e Salanina 2,389 g/L sobre o ácaro-rajado Tetranychus urticae e os predadores Phytoseiulus macropilis e Neoseiulus californicus em laboratório. Para o ácaro-rajado, foram consideradas as variáveis mortalidade, fecundidade, efeito ovicida e persistência biológica, enquanto para os fitoseídeos consideraram-se mortalidade e fecundidade. A mortalidade máxima observada para o ácaro-rajado foi de 89,7% e 91,5% para Azamax® e Neemseto®, respectivamente, na concentração de 0,5% após a reaplicação do produto no sétimo dia. Também foram observados efeitos adversos sobre a fecundidade e a viabilidade dos ovos quando tratados com os produtos comerciais (p.c.. A persistência biológica dos produtos foi de aproximadamente três dias após a pulverização. As formulações apresentaram seletividade em relação aos fitoseídeos, porém causaram redução da fecundidade dos mesmos.The aim of the present study was to evaluate the efficiency of control and adverse effects of two neem based products: Azamax TM (Azadirachtin A/B 12g/L and Neemseto TM (Azadirachtin A/B, Nimbin and Salanin 2,389 g/L over two-spotted spider mite Tetranychus urticae and the predators Phytoseiulus macropilis and Neoseiulus californicus in laboratory. Effects over the mortality, fecundity, eggs and biological persistence of the two-spotted spider mite when treated with neem based products were evaluated. For the phytoseiids the effects on mortality and fecundity were evaluated. The maximum mortality of two-spotted spider mites rates observed were 89.7% and 91.5% for Azamax TM and Neemseto TM respectively, on the 0.5% concentration after reapplying the product on the seventh day. Adverse effects were also observed over the fecundity and viability of the eggs when treated with commercial products (c.p.. The biological persistence of the products was of approximately three days after being pulverized. The formulations present selectivity in relation to the phytoseiids, however they caused fecundity reduction.

  14. Seasonal abundance of Aceria carvi (Acari: Eriophyidae) investing commercial caraway fields in the Czech Republic

    Czech Academy of Sciences Publication Activity Database

    Zemek, Rostislav; Kameníková, L.; Zemková-Rovenská, Gabriela; Samek, T.

    2004-01-01

    Roč. 14, - (2004), s. 593-598. ISSN 0393-8131 R&D Projects: GA ČR(CZ) GA522/02/1490 Institutional research plan: CEZ:AV0Z5007907 Keywords : Aceria carvi * eriophyoid mite * caraway Subject RIV: EH - Ecology, Behaviour

  15. Mite species of Mesostigmata order (Arachnida, Acari in industrial and postindustrial areas of Poland

    Directory of Open Access Journals (Sweden)

    Maciej Skorupski

    2013-03-01

    Full Text Available Industrial and postindustrial sites are effects of human activity that creates new habitats for many species. Among others, these sites are well occupied by mites of the order Mesostigmata. Because these animals have rather low tolerance to changes in soil environment, they are generally highly abundant, taxonomically and trophically diversified, they may potentially be used as powerful bioindicators and their presence or absence in the upper soil horizons may be a good base for describing changes of environmental conditions and ecosystem perturbations. In the paper we listed the most common mites from the order Mesostigmata (80 species found in Poland and we also described the environmental conditions they occupy. In Poland, most of these species were found by scientists from two research centers: University of Technology and Life Sciences with University of Kazimierz Wielki in Bydgoszcz and University of Silesia in Katowice. Most of the species found are very common, however some of them may be used to evaluate the effects of human influence on the environment, not only at the species level but also the zoocenosis level.

  16. Description of male and immature stages of Eupalopsellus hamedaniensis et al. (Acari: Eupalopsellidae)

    OpenAIRE

    Ueckermann, Edward Albert; Khanjani, Mohammad; Rostami, Elaheh; Abassipour, Habib

    2011-01-01

    The male, deutonymph, protonymph and larva of Eupalopsellus hamedaniensis Khanjani et al., 2007. A new are described and illustrated, based on 36 larva, six protonymph, two deutonymph and seven male available specimens from sweet cherry (Prunus avium L.) and plum (Prunus salicina Lindl) (Rosaceae ) in the type locality Hamedan, Hamedan province and other parts of western Iran. http://dx.doi.org/10.1080/01647954.2010.519724

  17. Biology of Amblyomma aureolatum (Pallas, 1772 (Acari: Ixodidae on some laboratory hosts in Brazil

    Directory of Open Access Journals (Sweden)

    Daniel Sobreira Rodrigues

    2002-09-01

    Full Text Available The ixodid Amblyomma aureolatum is suspected to play a role in the epidemiology of wild life-cycle hemoparasites, which frequently infect dogs in rural and hunting areas in Brazil. Little is known about its bionomics. The objective of the present study was to evaluate some bionomic aspects of A. aureolatum ticks in Brazil. One engorged female, collected from a dog (Canis familiaris in São Sebastião das Águas Claras, State of Minas Gerais, was used to establish a colony in the laboratory. Subsequently its parasitic stage progeny were fed on domestic dogs and laboratory animals. The free-living stages were incubated at 27ºC ± 2°C and minimum 70% relative humidity in a BOD incubator. The egg incubation period ranged from 31 to 34 days; the parasitic period of larvae ranged from 4 to 6 days and ecdysis to nymphs occurred from day 19 up to day 22. The parasitic period of nymphs ranged from 5 to 8 days and the period of ecdysis to adults from 31 to 33 days. The parasitic period of adults ranged from 11 to 15 days, the pre-oviposition period from 6 to 12 days, and the oviposition period from 9 to 38 days. The total duration of the life cycle ranged from 116 to 168 days.

  18. Hard ticks (Acari: Ixodidae) of livestock in Nicaragua, with notes about distribution.

    Science.gov (United States)

    Düttmann, Christiane; Flores, Byron; Kadoch Z, Nathaniel; Bermúdez C, Sergio

    2016-09-01

    We document the species of ticks that parasitize livestock in Nicaragua. The study was based on tick collection on cattle and horses from 437 farms in nine departments. Of 4841 animals examined (4481 cows and 360 horses), 3299 were parasitized, which represent 68 % of the bovines and 67 % of the equines in study: 59 cows and 25 horses were parasitized by more than one species. In addition, 280 specimens of the entomological museum in León were examined. The ticks found on cattle were Rhipicephalus microplus (75.2 % of the ticks collected), Amblyomma mixtum (20.8 %), A. parvum (2.6 %), A. tenellum (0.7 %), A. maculatum (0.7 %). While the ticks collected from the horses were: Dermacentor nitens (41.5 %), A. mixtum (31.7 %), R. microplus (13.8 %), A. parvum (6.5 %), A. tenellum (3.3 %), D. dissimilis (2.4 %) and A. maculatum (0.8 %). PMID:27392740

  19. Species Diversity and Distribution of Ticks (Acari: Ixodidae) in Zabol County, Eastern Iran

    OpenAIRE

    Maryam Ganjali; Mansour Dabirzadeh; Masoud Sargolzaie

    2014-01-01

    Background: Ticks are important vectors of human and animal pathogens. They are considered as main vectors for transmission of many viral, bacterial, rickettsial and parasitical pathogens. The aim of the present study was to find out species diversity of ticks, which infested the domestic ruminants in Zabol County, Eastern Iran in 2012. Methods: Ticks were selected randomly from sheep, goats, cattle and camels. The ticks were collected from the body of infested animals and stored in 70% ethan...

  20. Precise identification of different stages of a tick, Ixodes granulatus Supino, 1897 (Acari:Ixodidae)

    Institute of Scientific and Technical Information of China (English)

    Ernieenor Faraliana Che Lah; Salmah Yaakop; Mariana Ahamad; Ernna George; Shukor Md Nor

    2016-01-01

    Objective: To identify different stages of Ixodes granulatus (I. granulatus) based on morphological characters prior to molecular identification which is significant for con-firming and identifying the nymphal stages of I. granulatus. Methods: A total of 14 individuals of adult, engorged and nymphal ticks collected from three different localities were examined morphologically using taxonomic keys, followed by PCR using cytochrome oxidase subunit I (COI). Clustering analysis based on COI sequences was carried out by constructing neighbor-joining and maximum parsimony tree to clarify the genetic variation and diversity of local I. granulatus. Results: Based on external morphological characterizations, nine individuals (64.3%) were successfully identified as I. granulatus, while five individuals were recognized only as Ixodes sp. due to lack of morphological characters visible and development during that stage. Molecular analysis of local I. granulatus using COI gene revealed 93%–94%sequence homology from available sequence in GenBank and was in concordance with the morphological identification. Furthermore, a low intraspecific variation was observed among the species of I. granulatus collected from different localities (0%–3.7%). Conclusions: These findings demonstrated for the first time the establishment of COI gene for identifying I. granulatus nymphal tick which is of paramount importance to the control of potential tick-borne infections in Malaysia. Moreover, this study provides evidence that a combination of morphology and molecular data was corroborated as an accurate tool for tick identification.

  1. Effect of temperature on feeding period of larval blacklegged ticks (Acari: Ixodidae) on eastern fence lizards

    Science.gov (United States)

    Rulison, Eric L.; LeBrun, Roger A.; Ginsberg, Howard S.

    2014-01-01

    Ambient temperature can influence tick development time, and can potentially affect tick interactions with pathogens and with vertebrate hosts. We studied the effect of ambient temperature on duration of attachment of larval blacklegged ticks, Ixodes scapularis Say, to eastern fence lizards, Sceloporus undulatus (Bose & Daudin). Feeding periods of larvae that attached to lizards under preferred temperature conditions for the lizards (WARM treatment: temperatures averaged 36.6°C at the top of the cage and 25.8°C at the bottom, allowing behavioral thermoregulation) were shorter than for larvae on lizards held under cool conditions (COOL treatment temperatures averaged 28.4°C at top of cage and 24.9°C at the bottom). The lizards were infested with larvae four times at roughly monthly intervals. Larval numbers successfully engorging and dropping declined and feeding period was longer after the first infestation.

  2. Synganglion histology in different stages of Rhipicephalus sanguineus ticks (Acari: Ixodidae).

    Science.gov (United States)

    Roma, Gislaine Cristina; Nunes, Pablo Henrique; Remédio, Rafael Neodini; Camargo-Mathias, Maria Izabel

    2012-06-01

    The present study performs a morpho-histological description of the central nervous system of Rhipicephalus sanguineus ticks in order to analyze if there are differences in this tissue among larvae, nymphs, and adults. The results showed that the central nervous system in all the life stages of R. sanguineus consists of a mass of fused nerves named synganglion. Externally, this organ does not present segmentation, consisting of a single structure located ventromedially in the third anterior of the body. This organ is externally covered by the neural lamella or neurilemma, a uniform and acellular layer. Below, there is the periganglionic membrane or perineurium, formed by glial cells, which are characterized by their elongated nuclei. The esophagus penetrates the synganglion dividing it in two regions: supraesophageal, which is the smaller of the two and consists of a protocerebrum, a single dorsal ganglion located anteriordorsally to the esophagus; and the subesophageal, which is the largest part of the synganglion, located in the posterior region and ventral to the esophagus. Internally, the synganglion is subdivided in an external cortical region-which contains the cellular body of the nervous cells-and an internal neuropile formed by a set of neural fibers and it is constituted by bilaterally symmetric ganglia, from where nerves emerge towards several parts of the body. The results here obtained showed that there are no differences in the morpho-histology of this tissue in different life stages of R. sanguineus, suggesting that the initial structure is maintained during the whole life cycle of the tick, i.e., from larval to adult stage. PMID:22218921

  3. The Evolving Medical and Veterinary Importance of the Gulf Coast tick (Acari: Ixodidae).

    Science.gov (United States)

    Paddock, Christopher D; Goddard, Jerome

    2015-03-01

    Amblyomma maculatum Koch (the Gulf Coast tick) is a three-host, ixodid tick that is distributed throughout much of the southeastern and south-central United States, as well as several countries throughout Central and South America. A considerable amount of scientific literature followed the original description of A. maculatum in 1844; nonetheless, the Gulf Coast tick was not recognized as a vector of any known pathogen of animals or humans for >150 years. It is now identified as the principal vector of Hepatozoon americanum, the agent responsible for American canine hepatozoonosis, and Rickettsia parkeri, the cause of an emerging, eschar-associated spotted fever group rickettsiosis identified throughout much of the Western Hemisphere. Coincident with these discoveries has been recognition that the geographical distribution of A. maculatum in the United States is far more extensive than described 70 yr ago, supporting the idea that range and abundance of certain tick species, particularly those with diverse host preferences, are not fixed in time or space, and may change over relatively short intervals. Renewed interest in the Gulf Coast tick reinforces the notion that the perceived importance of a particular tick species to human or animal health can be relatively fluid, and may shift dramatically with changes in the distribution and abundance of the arthropod, its vertebrate hosts, or the microbial agents that transit among these organisms. PMID:26336308

  4. Central nervous system of Rhipicephalus sanguineus ticks (Acari: Ixodidae): an ultrastructural study.

    Science.gov (United States)

    Roma, Gislaine Cristina; Nunes, Pablo Henrique; de Oliveira, Patrícia Rosa; Remédio, Rafael Neodini; Bechara, Gervásio Henrique; Camargo-Mathias, Maria Izabel

    2012-09-01

    This study performed the ultrastructural description of the synganglion of Rhipicephalus sanguineus males and females, aiming to contribute to the understanding of the cellular organization of this organ. The results show that the central nervous system of these individuals consists of a mass of fused nerves, named synganglion, from where nerves emerge towards several parts of the body. It is surrounded by the neural lamella, a uniform and acellular layer, constituted by repeated layers of homogeneous and finely granular material. The perineurium is just below, composed of glial cells, which extensions invaginate throughout the nervous tissue. The synganglion is internally divided into an outer cortex, which contains the cellular bodies of the neural cells and an inner neuropile. The neural cells can be classified into two types according to cell size, cytoplasm-nucleus relation, and neurosecretory activity. Type I cells are oval or spherical and present a large nucleus occupying most part of the cytoplasm, which contains few organelles. Type 2 cells are polygonal, present a great cytoplasm volume, and their nuclei are located in the cell periphery. The cytoplasm of these cells contains a well-developed rough endoplasmic reticulum, Golgi regions, mitochondria, and several neurosecretory granules. The subperineurium and the tracheal ramifications are found between the cortex and the neuropile. The latter is formed mainly by neural fibers, tracheal elements, and glial cells. The results obtained show that R. sanguineus males' and females' nervous tissue present an ultrastructural organization similar to the one described in the literature for other tick species. PMID:22610445

  5. Description of all the stages of Ixodes inopinatus n. sp. (Acari: Ixodidae).

    Science.gov (United States)

    Estrada-Peña, Agustín; Nava, Santiago; Petney, Trevor

    2014-10-01

    All of the parasitic stages of Ixodes inopinatus n. sp. are described from specimens collected by flagging and on lizards and foxes. The new species replaces I. ricinus in dry areas of the Mediterranean region in Spain, Portugal, Morocco, Algeria and Tunisia. It has also been collected in areas of western Germany in sympatry with I. ricinus, far of its known distribution range and on an unusual host. The females of the new species can be separated from I. ricinus by the relative dimensions and punctations of the scutum, the length of the idiosomal setae, the size of the auriculae, and the aspect of the porose areas. Nymphs of I. inopinatus can be easily separated from I. ricinus by a combination of scutal dimensions, the relative size of scutal and alloscutal setae, and the relative size of the spurs on coxa I. The larvae of the new species have a broader than long scutum and unusually long Md1 to Md3 idiosomal setae. The new species is allopatric with I. ricinus in Spain and Portugal. It is hypothesized that it has been historically overlooked and reported as I. ricinus at least in northern Africa, southern Spain and parts of south-western Portugal. The existence of a new species in the I. ricinus complex makes necessary the critical assessment of its complete distribution, its abiotic preferences and seasonal activity, as well as its hosts and implications for the transmission of pathogens. PMID:25108790

  6. Nymphs of the genus Amblyomma (Acari: Ixodidae) of Brazil: descriptions, redescriptions, and identification key.

    Science.gov (United States)

    Martins, Thiago F; Onofrio, Valeria C; Barros-Battesti, Darci M; Labruna, Marcelo B

    2010-06-01

    Together with the larval stage, the nymphal stage of ticks of the genus Amblyomma are the most aggressive ticks for humans entering areas inhabited by wildlife and some domestic animals in Brazil. However, due to the absence of morphological descriptions of the nymphal stage of most Brazilian Amblyomma species, plus the lack of an identification key, little or nothing is known about the life history of Amblyomma spp. nymphs in the country. In the present study, morphological description of the nymphal stage, illustrating important external characters through scanning electron microscopy, is provided for nymphs of 15 Amblyomma species that occur in Brazil, for which the nymphal stage had never been described: A. aureolatum, A. auricularium, A. calcaratum, A. coelebs, A. fuscum, A. humerale, A. incisum, A. latepunctatum, A. naponense, A. nodosum, A. ovale, A. pacae, A. pseudoconcolor, A. scalpturatum, A. varium. In addition, the nymphal stage of 12 Amblyomma species, which had been previously described, are redescribed: A. brasiliense, A. cajennense, A. dissimile, A. dubitatum, A. longirostre, A. oblongoguttatum, A. parkeri, A. parvum, A. romitii, A. rotundatum, A. tigrinum, A. triste. The descriptions and redescriptions totalized 27 species. Only 2 species (A. geayi, A. goeldii) out of the 29 Amblyomma species established in Brazil are not included in the present study. A dichotomous identification key is included to support taxonomic identification of the nymphal stage of 27 Amblyomma species established in Brazil. PMID:21771514

  7. A new species of Ornithodoros (Acari: Argasidae) from desert areas of northern Chile.

    Science.gov (United States)

    Muñoz-Leal, Sebastián; Venzal, José M; González-Acuña, Daniel; Nava, Santiago; Lopes, Marcos G; Martins, Thiago F; Figueroa, Cecilia; Fernández, Nicolás; Labruna, Marcelo B

    2016-07-01

    Ornithodoros atacamensis n. sp. is described from larvae collected on the lizard Liolaemus bisignatus and from free-living adults collected in desert areas from the Pan de Azúcar and Llanos de Challe National Parks, in Northern Chile. Additionally, unengorged larvae were obtained from fertilized females, which laid eggs in the laboratory. Morphological and mitochondrial 16S rDNA sequence analyses were performed in order to compare this new soft tick species with other congeneric Neotropical representatives. Larvae of O. atacamensis are morphologically closely related to Ornithodoros talaje sensu stricto, Ornithodoros puertoricensis, Ornithodoros rioplatensis, Ornithodoros guaporensis and Ornithodoros hasei, all belonging to the O. talaje species group. The larval diagnostic characters for this species are a combination of a large pyriform dorsal plate with a length of approximately 300μm, 17 pairs of dorsal setae with five central pairs, hypostome with apex pointed and dental formula 2/2 in most rows, 3/3 apically, and capsule of the Haller's organ oval in shape without reticulations. Phylogenetic analyses inferred from the mitochondrial 16S rRNA gene and a Principal Component Analysis based on morphometric characters provide additional support to the description of O. atacamensis as an independent lineage within the genus clustering within the O. talaje species group. PMID:27132517

  8. Ticks (Acari: Ixodidae) on swifts (Apodiformes: Apodidae) in Minas Gerais, southeastern Brazil.

    Science.gov (United States)

    Tolesano-Pascoli, Graziela; Garcia, Frederico Innecco; Gomes, Carla Raphaela Gonzaga; Diniz, Kátia Cristina; Onofrio, Valeria Castilho; Venzal, José Manuel; Szabó, Matias Pablo Juan

    2014-10-01

    Brazil harbors five species of Cypseloidinae swifts. Those from Streptoprocne and Cypseloides genera have a very distinct ecology. They shelter at night and build nests in moist cliffs by waterfalls. Information about tick infestation of these birds is virtually non-existent and restricted to the description of a new species, Ixodes paranaensis, in Streptoprocne biscutata in Paraná State and another record of this species in Streptoprocne zonaris in Minas Gerais State. We herein report tick infestation of swifts at eight waterfalls in the Cerrado biome of Minas Gerais State, southeastern Brazil. Swifts were captured during six campaigns from November 2008 to April 2013. Overall, 584 swifts were captured (527 C. senex, four C. fumigatus and 53 S. zonaris). Four birds were tick infested (prevalence of 0.7 %). Three individuals of C. senex hosted one tick each; a nymph of I. paranaensis, a female of I. paranaensis and a nymph of Amblyomma cajennense. One S. zonaris hosted an I. paranaensis nymph and an Ornithodoros sp. larva (Argasidae). PMID:24696361

  9. Scanning electron microscopy of all parasitic stages of Haemaphysalis qinghaiensis Teng, 1980 (Acari: Ixodidae).

    Science.gov (United States)

    Chen, Ze; Li, Youquan; Liu, Zhijie; Ren, Qiaoyun; Ma, Miling; Luo, Jianxun; Yin, Hong

    2014-06-01

    Haemaphysalis qinghaiensis Teng (Acta Zootaxon Sin 5:144-149, 1980) is an endemic species in China. This tick species was first described based on engorged or semi-engorged specimens, and the drawings and description in words of morphological characteristics were poor. Therefore, the present study aims to redescribe morphological characteristics of all active stages of this tick species in detail by scanning electron microscopy. Additionally, a comparison between H. qinghaiensis and other sympatric Haemaphysalis species was also analyzed. Males of H. qinghaiensis can be distinguished from sympatric Haemaphysalis species by the following characters: palpi less salient laterally and curved in contour; ventrointernal setae of palpal segment II thin, number <7; the tips of palpal segment III not so strongly recurved inward to become "pincerlike" and lacking dorsal spur; dental formula 5/5; lateral grooves enclose first festoon; coxa IV with a short, broadly triangular spur; tarsi somewhat humped; and spiracular plates long comma-shaped. Females of H. qinghaiensis can be distinguished by palpi less salient laterally and curved in contour; ventrointernal setae of palpal segment II thin, number <7; segment III of palpi lacking dorsal spur; dental formula 4/4; scutum subcircula; and tarsi somewhat humped. Nymphs of H. qinghaiensis can be distinguished from those of other species by palpi less salient laterally and curved in contour; dental formula 2/2; basis capituli rectangular, with distinct dorsal cornua, without ventral cornua; and spiracular plates with short and narrow dorsal prolongation. Larvae of H. qinghaiensis can be distinguished by palpi less salient laterally and curved in contour; basis capituli rectangular, without distinct cornua. PMID:24687283

  10. Description of a New Dermacentor (Acari: Ixodidae) Species from Thailand and Vietnam.

    Science.gov (United States)

    Apanaskevich, Dmitry A; Apanaskevich, Maria A

    2015-09-01

    A new tick species belonging to the genus Dermacentor Koch, 1844, namely, Dermacentor filippovae n. sp., is described. All stages of this species are similar to those of D. auratus Supino, 1897, D. compactus Neumann, 1901, and D. limbooliati Apanaskevich and Apanaskevich, 2015 with which it was previously confused. Males of D. filippovae may be distinguished from those of D. auratus, D. compactus, and D. limbooliati by the following suite of characters: conscutum broadly oval with convex lateral sides, widest posteriorly; trapezium-like shape of pseudoscutum; central brown patch on conscutum indistinct; coxa I with internal spur narrowly triangular with tapering apex and external spur fairly long, narrowly triangular with tapering apex; numerous internal spurs on coxa IV; and trochanter I with moderate, broadly triangular spur with tapering apex. Females of D. filippovae may be distinguished from those of D. auratus, D. compactus, and D. limbooliati by the following suite of characters: central patch of scutum narrow, distinct line interrupted around midlength; more rounded shape of scutum; long and distinct alloscutal setae; moderately broad U-shaped genital aperture with preatrial fold bulging anteriorly and thereafter sharply sloping to flat surface posteriorly; coxa I with internal spur narrowly triangular with tapering apex and external spur fairly long, narrowly triangular with tapering apex; and trochanter I with moderate, broadly triangular spur with tapering apex. Dermacentor filippovae is known from Thailand and Vietnam where the adults were collected from wild boar, Sus scrofa L., and vegetation. PMID:26336207

  11. Description of New Dermacentor (Acari: Ixodidae) Species from Malaysia and Vietnam.

    Science.gov (United States)

    Apanaskevich, Maria A; Apanaskevich, Dmitry A

    2015-03-01

    A new tick species belonging to the genus Dermacentor Koch, 1844, namely, Dermacentor limbooliati n. sp., is described. Adults of this species are similar to those of Dermacentor auratus Supino, 1897 and Dermacentor compactus Neumann, 1901, with which it was previously confused. Males of D. limbooliati may be distinguished from those of D. auratus and D. compactus by the following suite of characters: relatively broad conscutum with slightly straightened lateral sides, conscutum widest approximately at mid-length, oval shape of pseudoscutum, central brown patch in the center of pseudoscutum broad and diffused and not continuous with central patch in posteromedian area, conscutum posterior to pseudoscutum rugose, wide and blunt internal spur on coxa I, relatively long, narrow, and pointed external spur on coxa I, numerous internal spurs on coxa IV and trochanter I with moderate and broadly triangular spur with tapering apex. Females of D. limbooliati may be distinguished from those of D. auratus and D. compactus by the following suite of characters: rounded shape of scutum, central brown patch broad and diffused in the center of scutum, relatively long alloscutum setae, genital aperture moderately narrow V-shaped with preatrial fold bulging, wide and blunt internal spur on coxa I, relatively long, narrow, and pointed external spur on coxae I and trochanter I with moderate and broadly triangular spur with tapering apex. D. limbooliati is known from Malaysia and Vietnam where the adults were collected from vegetation, Sus scrofa resting beds, a human, and clothing. The immature stages remain unknown. PMID:26336300

  12. Description of a new Dermacentor (Acari: Ixodidae) species, a parasite of wild mammals in Central America.

    Science.gov (United States)

    Apanaskevich, Dmitry A; Bermúdez, Sergio E

    2013-11-01

    A new tick species belonging to the genus Dermacentor Koch, 1844, Dermacentor panamensis n. sp., is described. All stages of this species are similar to those of Dermacentor halli McIntosh, 1931, with which it was confused for a long time. Males of D. panamensis can be distinguished from those of D. halli by the following suite of characters: narrower conscutum, broader basis capituli, shorter dorsal cornua, narrower palpi, palpal segment III tapering to its apex, legs poorly ornate: ivory colored patches present only on dorsal aspects of leg segments (mostly on legs III and IV), and internal spur of coxae I narrower and more tapering. Females of D. panamensis can be distinguished from those of D. halli by the following suite of characters: narrower and less ornate scutum, broader basis capituli, shorter dorsal cornua, larger porose areas, narrower palpi, palpal segment III tapering to its apex, legs poorly ornate: ivory colored patches present only on dorsal aspects of leg segments (mostly on legs III and IV), and internal spur of coxae I narrower and more tapering. Nymphs of D. panamensis can be distinguished from those of D. halli by clear posterolateral projections of scutum and by absence of coxal "pore" on coxae I-IV, while larvae of D. panamensis can be distinguished from those ofD. halli by shorter and less sharp lateral projections of basis capituli dorsally and slightly sharp anterior angle of basis capituli. D. panamensis is known from highlands of Costa Rica, Guatemala, Honduras, Nicaragua, and Panama where the adults were collected from porcupines and unidentified sloth and mouse while nymphs and larvae were found on various rodents and a bat. PMID:24843922

  13. Carios mimon (Acari: Argasidae): description of adults and redescription of larva.

    Science.gov (United States)

    Barros-Battesti, Darci Moraes; Landulfo, Gabriel Alves; Onofrio, Valeria Castilho; Faccini, João Luiz Horácio; Marcili, Arlei; Nieri-Bastos, Fernanda Aparecida; Venzal, José Manuel; Labruna, Marcelo Bahia

    2011-05-01

    Carios mimon is an argasid tick common on Chiroptera, originally described from larvae collected on bats Mimon crenulatum from Bolivia and Eptesicus brasiliensis from Uruguay. Later it was also registered from Argentina and recently included among the Brazilian tick fauna. In Brazil, this species is very aggressive to man, resulting in intense inflammatory response and pain. It is known only by the larval description and its morphology resembles that from other species currently included into the genus Carios, formerly classified into the subgenus Alectorobius, genus Ornithodoros. Here we describe adults and redescribe the larva of C. mimon, based on light and scanning electron microscopy. Remarks about its morphological similarity with other species of this genus are also discussed. Molecular analysis inferred from a portion of the 16S rRNA mitochondrial gene placed C. mimon in a cluster supported by maximal bootstrap value (100%) with other argasid species (mostly bat parasites in the New World), which have been classified into either the genus Ornithodoros or Carios, depending on the Argasidae classification adopted by different authors. PMID:21161720

  14. Description of nymphal instars of Ornithodoros mimon Kohls, Clifford & Jones, 1969 (Acari: Argasidae).

    Science.gov (United States)

    Landulfo, Gabriel Alves; Pevidor, Luisa Viana; Luz, Hermes Ribeiro; Faccini, João Luiz Horácio; Nunes, Pablo Henrique; Barros-Battesti, Darci Moraes

    2013-01-01

    Ornithodoros mimon is an argasid tick common on Chiroptera in the Neotropical region, where it also bites humans aggressively. Here we describe for the first time all nymphal instars (N1, N2 and N3) of O. mimon based on optical and scanning electron microscopy. Although the nymphal instars of O. mimon resemble each other closely, there are characters that differentiate them: the N3 are taller that N1 and N2; the genital primordium occurs in some N2 and all N3; the spiracular plate in N1 and N2 is cone-like, but in N3 it is semicircular; and the submarginal dorsal groove is less distinct in N1 but more evident in N3. Nymphs of 0. mimon closely resemble the bat-associated species of the genus Ornithodoros included in the Alectorobius group. We review prior descriptions of nymphs of the Alectorobius group and make comparisons with nymphs of O. minon, highlighting characters with diagnostic information, such as the idiosomal shape, presence of discs and hood and absence subapical protuberance of tarsus I. The description of nymphal instars of O. mimon herein presented, improves the taxonomy of the family Argasidae, performing a work more detailed about the immature stage of this species. PMID:26106682

  15. New records of Amblyomma goeldii (Acari: Ixodidae) and description of the nymphal stage.

    Science.gov (United States)

    Martins, Thiago F; Gianizella, Sérgio L; Nunes, Pablo H; Faria, Diogo C L O; Nascimento, Carlos A R Do; Abrahão, Carlos R; Miranda, Flávia R; Teixeira, Rodrigo H F; Ramirez, Diego G; Barros-Battesti, Darci M; Labruna, Marcelo B

    2015-01-01

    Since its original description from the Amazonian region, the tick species Amblyomma goeldii Neumann, 1899 has been misidentified with Amblyomma rotundatum Koch, 1844 in different countries of the Neotropical region. Because of this, some authors have considered that the only confirmed records of A. goeldii were from French Guyana. Herein, we reviewed all specimens of A. goeldii that have been deposited at two tick collections in Brazil. In addition, we describe the nymphal stage of A. goeldii for the first time. A total of 10 unpublished records of the adult stage of A. goeldii are recorded from the Amazonian region of Brazil, confirming the occurrence of A. goeldii in this country. Except for one record on the snake Boa constrictor Linnaeus, all records of A. goeldii reported in the present study were from anteaters (Pilosa: Myrmecophagidae). Our results, in conjunction with previous literature records, indicate that anteaters and large snakes are important hosts for the adult stage of A. goeldii. The nymph of A. goeldii is morphologically similar to the nymphs of Amblyomma romitii Tonelli-Rondelli, 1939, Amblyomma dissimile Koch, 1844, and A. rotundatum. We present a modification of a previously published taxonomic key of Amblyomma nymphs from Brazil, in order to perform taxonomic identification of the nymph of A. goeldii based on external morphology. The geographical distribution of A. goeldii appears to be restricted to the Amazonian region. There were no previous host records for the immature stages of A. goeldii, thus it is expected that the present nymphal description will facilitate further works on the ecology of this poorly studied tick species. PMID:25947818

  16. Influence of gamma radiation for controlling Brevipalpus phoenicis (Acari: Tenuipalpidae) (Geijskes, 1939) in oxygen atmosphere

    International Nuclear Information System (INIS)

    Brevipalpus phoenicis mite are controlled across of solutions acaricides, which are chemicals and leave residues in addition there is the difficulty of an effective pulverization due to the small size of the mite, the objective of this study was to evaluate of the influence of oxygen combined with gamma radiation on B.phoenicis as alternative control. Were used 70 mites per arena in 9 reps on 3 treatments at doses of 0 (control), 200 and 300 Gy. For irradiation, the leaves containing the mites, were cut and placed on bottles with bladder tied with ribbons and strings, before was put pure oxygen and the bottle was then sealed, these were taken to a gamma irradiator of Cobalt 60-type Gammacell 220, under a dose rate of 0.381 kGy/hour located in the CENA/USP. Was evaluated daily (eggs, nymphs and adults) of the mites observed viability, fertility and mortality across of the analysis of variance design with completely randomized design using the Statistical Analysis System (SAS) version 9.2® and by the Tukey test, the verification of means. After 22 days of irradiation the hatchability in 200 Gy dose was 41% after 3 days and 57% in control dose, this differed statistically of the other doses, where the nymphs arrived to the adult stage, which did not occurred in the 200 Gy dose and higher due to mutations, generated by the gamma radiation. In 300 Gy not was observed the presence of nymphs and eggs, being the sterilizing dose for all stages of the B.phoenicis. (author)

  17. Wild birds as hosts of Amblyomma cajennense (Fabricius, 1787 (Acari: Ixodidae

    Directory of Open Access Journals (Sweden)

    Rosario Rojas

    1999-05-01

    Full Text Available We evaluated the prevalence, mean intensity and relative density of ticks in 467 wild birds of 67 species (12 families from forest and cerrado habitats at two protected areas of Minas Gerais, between March and September 1997. Ticks collected (n=177 were identified as larvae and nymphs of Amblyomma cajennense and four other species of Amblyomma. We report for the first time 28 bird species as hosts of the immature stages of A. cajennense, demonstrating the lack of host specificity of the larvae and nymphs. A. cajennense had 15% prevalence on birds, with a mean infestation intensity of 0.37 ticks per host sampled, and 2.5 ticks per infested bird. Prevalence varied in relation to host species, diet and between birds from forests at two successional stages. There were no differences in relation to host forest dependence, participation in mixed flocks of birds, and nest type constructed. A. cajennense is a species of medical and veterinary importance, occurring on domestic animals but is known little of its occurrence on wildlife.

  18. Two new species and new records of chiggers (Acari: Leeuwenhoekiidae,Trombiculidae) from birds in Vietnam

    Czech Academy of Sciences Publication Activity Database

    Kalúz, S.; Hung, N. M.; Čapek, Miroslav; Literák, I.

    2016-01-01

    Roč. 4061, č. 5 (2016), s. 483-503. ISSN 1175-5326 Institutional support: RVO:68081766 Keywords : birds * chiggers * taxonomy * Leptotrombidium * Neoschoengastia * Hypogastia * new species Subject RIV: EG - Zoology Impact factor: 0.906, year: 2014

  19. Biology of Leipothrix dipsacivagus (Acari: Eriophyidae), a candidate for biological control of invasive teasels (Dipsacus spp.)

    Science.gov (United States)

    The present study describes key aspects of the biology of Leipothrix dipsacivagus, an eriophyid mite that was recently described as a new species from Dipsacus fullonum and D. laciniatus (Dipsacaceae). Preliminary host-specificity tests have shown that it can develop and reproduce only on Dipsacus s...

  20. Effects of triflumuron on the two-spotted spider mite, Tetranychus urticae (Acari: Tetranichydae).

    Science.gov (United States)

    Saenz de Cabezón, F J; Pérez-Moreno, I; Marco, V

    2002-01-01

    The effects of triflumuron on the mortality, fecundity, and fertility of the two-spotted spider mite, Tetranychus urticae, were evaluated in the laboratory. No differences in toxicity for larvae, protonymphs and deutonymphs were observed, but immature stages were 3.8-times more susceptible than adults at the LC50. The compound exhibited a direct contact ovicidal activity influenced by eggs age. 48-72 h old eggs were significantly more sensitive than eggs of the other age classes. No hatch inhibition was observed in eggs laid by treated adult females using a sublethal dose at two physiological times (triflumuron could be an interesting incorporation in integrated pest programs of T. urticae. PMID:12475077

  1. Amblyomma dissimi le (Acari: Ixodidae) PARÁSITO DE Boa constrictor EN COLOMBIA

    OpenAIRE

    Carrascal, Juan; Oviedo, Teresa; Monsalve, Santiago; Torres, Ana

    2009-01-01

    Objetivo. Describir algunas garrapatas encontradas en dos ejemplares de Boa constrictor, llevados al Centro de Atención y Valoración de Fauna Silvestre en Montería, Córdoba, Colombia. Materiales y métodos. Se recolectaron 37 garrapatas provenientes de dos individuos adultos de Boa constrictor, los parásitos fueron conservados en alcohol al 70% y posteriormente identificados mediante diversas claves taxonómicas. Resultados. Todas las garrapatas fueron identificadas como Amblyomma dissimile, d...

  2. Canis familiaris, un nuevo hospedero de ornithodoros (a.) puertoricensis fox, 1947 (acari: ixodida) en colombia

    OpenAIRE

    BEJARANO EDUAR E. E.; PATERNINA-GÓMEZ MARGARET; DÍAZ-OLMOS YIRYS; PATERNINA LUIS E.

    2009-01-01

    RESUMEN

    Las garrapatas revisten gran importancia en el campo biomédico por sus hábitos hematófagos y asociación con la transmisión de agentes patógenos a humanos y animales. El objetivo de esta investigación fue establecer las especies de g...

  3. Amblyomma dissimile (Acari: Ixodidae PARÁSITO DE Boa constrictor EN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Ana Torres M

    2009-08-01

    Full Text Available Objetivo. Describir algunas garrapatas encontradas en dos ejemplares de Boa constrictor, llevados al Centro de Atención y Valoración de Fauna Silvestre en Montería, Córdoba, Colombia. Materiales y métodos. Se recolectaron 37 garrapatas provenientes de dos individuos adultos de Boa constrictor, los parásitos fueron conservados en alcohol al 70% y posteriormente identificados mediante diversas claves taxonómicas. Resultados. Todas las garrapatas fueron identificadas como Amblyomma dissimile, de las cuales, 9 fueron hembras, 24 machos y 4 ninfas. Conclusiones. La identificación de ectoparásitos en especies de Boa c. constrictor contribuye a mantener adecuadamente esta especie en cautiverio y provee datos para establecer medidas profilácticas y tratamiento, igualmente, ayuda en el conocimiento de los agentes parasitarios de la fauna silvestre.

  4. Amblyomma dissimile (Acari: Ixodidae) PARÁSITO DE Boa constrictor EN COLOMBIA

    OpenAIRE

    Ana Torres M; Santiago Monsalve B; Teresa Oviedo S; Juan Carrascal V

    2009-01-01

    Objetivo. Describir algunas garrapatas encontradas en dos ejemplares de Boa constrictor, llevados al Centro de Atención y Valoración de Fauna Silvestre en Montería, Córdoba, Colombia. Materiales y métodos. Se recolectaron 37 garrapatas provenientes de dos individuos adultos de Boa constrictor, los parásitos fueron conservados en alcohol al 70% y posteriormente identificados mediante diversas claves taxonómicas. Resultados. Todas las garrapatas fueron identificadas como Amblyomma dissimile, de...

  5. Analyses of hemolymph from Amblyomma cajennense (Acari: ixodidae) using neutron activation analysis (NAA)

    Energy Technology Data Exchange (ETDEWEB)

    Simons, Simone M.; Oliveira, Daniella G.L.; Chudzinski-Tavassi, Ana M., E-mail: daniellaoliveira@butantan.gov.b, E-mail: amchudzinki@butantan.gov.b [Instituto Butantan, Sao Paulo, SP (Brazil); Zamboni, Cibele B., E-mail: czamboni@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2011-07-01

    Instrumental neutron activation analysis technique (INAA) was applied to determine the elemental composition of hemolymph from Amblyomma cajennense tick. This biological material came from Butantan Institute (Sao Paulo city, Brazil) and it was investigated using the IEA-R1 nuclear reactor (4MW, pool type) at IPEN/CNEN-SP - Brazil. The concentration values for: Br (0.0032 {+-} 0.0005gL{sup -1}), Ca (0.104 {+-} 0.029gL{sup -1}), Cl (4.41 {+-} 0.25gL{sup -1}), I (76 {+-} 27{mu}gL{sup -1}), K (0.38 {+-} 0.09gL{sup -1}), Mg (0.038 {+-} 0.011gL{sup -1}), Na (4.30 {+-} 0.26gL{sup -1}) and S (1.35 {+-} 0.37gL{sup -1}) were determined for the first time. These data were compared with the concentration values established for Americanum and Anatolicum Excavatum tick species to clarify the ion balance in this biological material (hemolymph). This comparison suggests that Na concentration, majority in these species, has a similar behavior. These data also contribute to the understanding of hemolymph composition complementing its characterization as well as for the understanding of several physiological processes, especially those related to salivary secretion. (author)

  6. Life cycle of Raoiella indica (Acari: Tenuipalpidae) on ornamental plants, mostly Arecaceae.

    Science.gov (United States)

    Vásquez, C; Colmenárez, Y; de Moraes, G J

    2015-02-01

    The red palm mite, Raoiella indica Hirst, has been primarily found associated with coconut and musaceous plants in the New World. However, it has also been recorded on several other palms, heliconiaceous and zingiberaceous species. This study was conducted to evaluate the suitability of different botanical families on which R. indica has been collected in the field and of arecaceous plants of the natural vegetation of the neotropics. In total, ten species of Arecaceae as well as Heliconia psittacorum [Heliconiaceae] and Alpinia purpurata [Zingiberacae] were evaluated, using coconut as a control. The study was carried out under controlled conditions (29 ± 0.5 °C, 60 ± 10% RH and photoperiod 12 h of light). Raoiella indica was able to complete immature development only on coconut, Adonidia merrillii, Ptychosperma macarthurii, H. psittacorum and A. purpurata. Duration of the immature phase (egg-adult) ranged between 21.5 days on coconut to 34.1 days on A. purpurata. Longevity was at least 50% greater and oviposition at least 38% higher on coconut than on other plants. Intrinsic rate of increase (rm) was higher on coconut (0.166) and A. merrillii (0.042), but negative on the other two plant species. Raoiella indica could not reach adulthood on any of the other ten arecaceous species considered in the study. The results suggested R. indica to be a threat to A. merrillii in addition to coconut, but not to other evaluated plants. However, complementary studies should be conducted to investigate whether the experimental procedures adopted in this study could not have prevented the mite from a better performance than it could have been under field conditions, especially in relation to Mauritia flexuosa, one of the dominant arecaceous plants in South America. PMID:25342244

  7. Diversity and population dynamics of Ascidae, Blattisociidae and Melicharidae (Acari: Mesostigmata) in tropical flowers in Brazil.

    Science.gov (United States)

    Britto, Erika Pessoa Japhyassu; Finotti, Amanda Silva; de Moraes, Gilberto José

    2015-06-01

    Cultivation of tropical flowers has expanded considerably in Brazil, justifying efforts to determine the arthropods associated with it. Heliconia species are some of the most important tropical flowers in Brazil. Mites of the families Ascidae, Blattisociidae and Melicharidae are commonly found on those plants. They disperse from flower to flower on hummingbirds. The objective of this study was to identify the diversity of mites of this group in tropical flowers, with emphasis on Heliconia species, in Brazil and to determine the fluctuation of the population of these mites in Piracicaba, Sao Paulo state. Specimens from Amazonas, Bahia, Pernambuco, Minas Gerais, Rio de Janeiro, Santa Catarina and São Paulo States were examined. Mites of the genera Asca and Iphidozercon (Ascidae), Cheiroseius and Lasioseius (Blattisociidae), and Proctolaelaps and Tropicoseius (Melicharidae) were collected in flowers of four plant families, with Lasioseius being the most diverse genus. Overall, most specimens found belonged to Tropicoseius, especially Tropicoseius venezuelensis Baker & Yunker; this was the dominant species on five of 13 Heliconia species/hybrids considered in this study. Samples of panicles of Heliconia rostrata Ruiz & Pavón were collected every 2 weeks, in Piracicaba. Six species of those mite families were found, among which Tropicoseius heliconiae Baker & Yunker and T. venezuelensis were the most numerous. The highest population levels of mites of those three families occurred at the beginning and at the end of the year, coinciding with the highest levels of rainfall, relative humidity and temperature, when plant flowers were most numerous and vigorous. Along each panicle, the highest mite densities were found in inflorescences of the three distal eighths of the panicles, where nectar and pollen were probably most abundant. PMID:25860858

  8. New host records of Haemaphysalis leporispalustris (Acari: Ixodidae) on birds in Brazil.

    Science.gov (United States)

    Zeringóta, Viviane; Maturano, Ralph; Santolin, Ísis Daniele Alves Costa; McIntosh, Douglas; Famadas, Kátia Maria; Daemon, Erik; Faccini, João Luiz Horacio

    2016-05-01

    Birds are an important component of the life histories and bioecology of a number of tick species and of some tick associated pathogens. An examination of the data concerning bird/tick associations in the Neotropics, showed that the tick Haemaphysalis leporispalustrisis (Packard, 1869) was rarely recorded infesting birds. The current study reports parasitism by H. leporispalustris in wild birds collected from Atlantic rain forest environments in the states of Rio de Janeiro (4LL) and Minas Gerais (17LL, 1NN), Brazil. All ticks were identified morphologically to the genus level; total DNA was extracted from each Haemaphysalis tick and examined by PCR and nucleotide sequencing of fragments of the eukaryotic genes encoding 16S rRNA and 12S rRNA. The bird species Arremon semitorquatus, Corythopis delalandi, Fluvicola nengeta, Troglodytes musculus, and Volatinia jacarina were recorded as hosts for H. leporispalustris for the first time in South America, and Turdus rufiventris represented a new record for Brazil. PMID:26965425

  9. Nanohystricidae n. fam., an unusual, plesiomorphic enarthronote mite family endemic to New Zealand (Acari, Oribatida).

    Science.gov (United States)

    Norton, Roy A; Fuangarworn, Marut

    2015-01-01

    Nanohystrix hammerae n. gen., n. sp.--proposed on the basis of numerous adults and a few juveniles--is a new oribatid mite of the infraorder Enarthronota that appears to be phylogenetically relictual and endemic to northern New Zealand, in habitats ranging from native shrublands to native and semi-native forests. With an adult body length of 1-1.2 mm, the species is the largest known enarthronote mite outside Lohmanniidae, and it has an unusual combination of plesiomorphic and apomorphic traits. Plesiomorphies include: a well-formed median (naso) eye and pigmented lateral eyes; a bothridial seta with a simple, straight base; a vertically-oriented gnathosoma; a peranal segment; adanal sclerites partially incorporated in notogaster (uncertain polarity); three genu I solenidia and a famulus on tarsus II. Autapomorphies include: five pairs of pale cuticular disks on the notogaster, with unknown function; six pairs of long, erectile notogastral setae, including pair h2 incorporated in the second transverse scissure along with the f-row, and pair h1 in a third scissure; chelicerae that are unusually broad, creating a flat-faced appearance; legs I that are inferred to have an unusually wide range of motion. Further, it is the only enarthronote species known to have an elongated ovipositor, and one of few to have glassy, luminous notogastral setae. The gastronotum of juveniles lacks transverse scissures, but has isolated sclerites supporting setae, including erectile setae. The large character gaps between N. hammerae and other enarthronote taxa justifies proposal of a monotypic new family--Nanohystricidae n. fam.--which is tentatively grouped with several other relictual families in the paraphyletic Heterochthonioidea. Small muscles appear to be involved in the operation of all erectile setae, but seem to be only depressors, with erection effected by hysterosomal distension. Based on gut contents, its food is primarily fungal hyphae and spores, though ingestion of small arthropods also occurs (perhaps by necrophagy). Collections were made by Berlese-funnel samples of litter, by sweeping low vegetation, and (mainly) by pitfall traps; the latter two suggest that adults are surface-active. Tritonymphs were collected by pitfall traps, but earlier juveniles were collected only by Berlese-funnels. Adults are frequently infected with a eugregarine parasite, which can entirely fill the digestive caeca; immature trophozoites were also seen in tritonymphs. Adults also can serve as hosts for dispersal of secondary capilliconidia of the fungal genus Basidiobolus. PMID:26624174

  10. Diagrammatic scale of Aceria guerreronis Keifer (Acari: Eriophyidae) damage in coconut

    International Nuclear Information System (INIS)

    Aceria guerreronis Keifer is an important pest of coconut worldwide. Due to the lack of standardized methods to quantify damage of this eryophyid, a diagrammatic scale with indices of 1, 2, 4, 8, 16, 32, 48 and 70% of damage caused by A. guerreronis was elaborated and tested to accuracy, precision and reproduction of the estimations. To validate the scale, fruits with different levels of damage were previously measured with the program AssessR and submitted to 10 inexperienced evaluators with or without the scale (first evaluation) and seven days after (second evaluation) with the same evaluators, using digitized pictures of the same fruits in a different sequence. The accuracy and precision of each evaluator was determined through linear regression between observed and estimated damage. Without using the scale, evaluators were less precise as seven out of 10 overestimated the damage, while evaluators provided with the scale were much more accurate. Also, evaluations with the aid of the scale were much more reproducible than without the scale. The scale was used to determine the relationship between infestation and damage levels caused by A. guerrerronis. The relationship between infestation and damage fitted by the equation 1ny = 4.948 - 0.121x + 1.789 1nx (R2 = 99.87%, P < 0.0001). Therefore, these findings show that it is possible to estimate A. guerreronis population density on infested coconut fruits by using the diagrammatic scale. (author)

  11. Analyses of hemolymph from Amblyomma cajennense (Acari: ixodidae) using neutron activation analysis (NAA)

    International Nuclear Information System (INIS)

    Instrumental neutron activation analysis technique (INAA) was applied to determine the elemental composition of hemolymph from Amblyomma cajennense tick. This biological material came from Butantan Institute (Sao Paulo city, Brazil) and it was investigated using the IEA-R1 nuclear reactor (4MW, pool type) at IPEN/CNEN-SP - Brazil. The concentration values for: Br (0.0032 ± 0.0005gL-1), Ca (0.104 ± 0.029gL-1), Cl (4.41 ± 0.25gL-1), I (76 ± 27μgL-1), K (0.38 ± 0.09gL-1), Mg (0.038 ± 0.011gL-1), Na (4.30 ± 0.26gL-1) and S (1.35 ± 0.37gL-1) were determined for the first time. These data were compared with the concentration values established for Americanum and Anatolicum Excavatum tick species to clarify the ion balance in this biological material (hemolymph). This comparison suggests that Na concentration, majority in these species, has a similar behavior. These data also contribute to the understanding of hemolymph composition complementing its characterization as well as for the understanding of several physiological processes, especially those related to salivary secretion. (author)

  12. Review of the genus Myrmozercon Berlese (Acari: Laelapidae), with description of two new species from Iran.

    Science.gov (United States)

    Joharchi, Omid; Moradi, Maryam

    2013-01-01

    This paper reports on three species of mites of the genus Myrmozercon Berlese, 1902 associated with ants in Iran--Myrmozercon crinitus Joharchi sp. nov. from Pheidole pallidula (Nylander), Myrmozercon michaeli Joharchi sp. nov. from Messor sp. and Myrmozercon tauricus Trach & Khaustov from Crematogaster schmidti (Mayr) in the bark of grape vines. Myrmozercon is redefined, the distribution, and the host-specificity and host range of its constituent species are discussed. A key to species of Myrmozercon occurring in the Palaearctic Region is presented. PMID:26473216

  13. Canis familiaris, UN NUEVO HOSPEDERO DE Ornithodoros (A. puertoricensis FOX, 1947 (ACARI: IXODIDA EN COLOMBIA

    Directory of Open Access Journals (Sweden)

    BEJARANO EDUAR E. E.

    2009-04-01

    Full Text Available

    RESUMEN

    Las garrapatas revisten gran importancia en el campo biomédico por sus hábitos hematófagos y asociación con la transmisión de agentes patógenos a humanos y animales. El objetivo de esta investigación fue establecer las especies de garrapatas que parasitan perros en tres poblaciones del área rural del Caribe colombiano. Durante los meses de agosto y diciembre del año 2006 se realizó búsqueda activa de garrapatas sobre caninos domésticos de las localidades de El Campín, Sabanas del Potrero y Escobar Arriba, departamento de Sucre. Las garrapatas recolectadas fueron almacenadas en viales con etanol al 70% e identificadas empleando claves morfológicas de referencia para cada familia. Para la determinación de especie en la familia Argasidae se realizaron estimaciones morfométricas de estructuras externas. Se recolectaron 420 garrapatas a partir de 50 caninos infestados, de un total de 134 perros examinados, que corresponde a una tasa de infestación del 37,3%. Las garrapatas fueron identificadas como Rhipicephalus sanguineus, Rhipicephalus (Boophilus microplus y Amblyomma ovale pertenecientes a la familia Ixodidae, y Ornithodoros (Alectorobius puertoricensis de la familia Argasidae. La especie predominante fue R. sanguineus (92,1% en los estados de larva, ninfa y adulto, seguida por larvas de O. puertoricensis, que fueron halladas en menor número sobre caninos de las tres localidades. Se registra, por primera vez en América, el parasitismo de O. puertoricensis sobre caninos domésticos y se confirma su presencia en Colombia.

    Palabras clave: garrapatas, perros, Ornithodoros puertoricensis, Ixodida, Colombia.


    ABSTRACT

    Ticks are very important from the biomedical point of view, by their hematophagic activity and their role in the transmission of pathogenic microorganisms to man and animals. The main goal of this work was to establish the tick species parasiting dogs in three rural localities of the Colombian Caribbean. From August to December 2006, an active search of ticks on dogs was carried out in the localities of El Campín, Sabanas del Potrero and Escobar Arriba, department of Sucre. The collected ticks were preserved into eppendorf tubes with 70% ethanol, and identified using standard morphological keys for each family. Argasid species were determined by measuring external morphological characters. Of 134 examined dogs in the three localities, 50 were found infested by ticks, representing a infestation rate of 37,3%. A total of 420 ticks were collected from dogs and identified as Rhipicephalus sanguineus, Rhipicephalus (Boophilus microplus, and Amblyomma ovale of the Ixodidae family, and Ornithodoros puertoricensis of the Argasidae family. R. sanguineus was the predominant species (92,1% in the stages of larva, nymph and adult, following by O. puertoricensis larvae recorded in low numbers in the three regions sampled. The tick O. puertoricensis is recorded for the first time as ectoparasite of domestic dogs in America. Additionally, the presence of this tick species is confirmed in Colombia.

    Key words: Ticks, dogs, Ornithodoros puertoricensis, Ixodida, Colombia

  14. Susceptibility of Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae) to seven ixodicides in Nuevo Leon, Mexico

    OpenAIRE

    Jesús A. Esparza Rentería; Emily Lizett Esparza Sevilla

    2015-01-01

    This article reports the results of research only. Mention of a proprietary product does not constitute an endorsement or a recommendation by the FAUANL for its use Animal husbandry and meat industry in Mexico are one of the principal activities of the agricultural sector of the country, which are threatened by factors that affect the production of meat, skin and milk; among these, the damages caused by Boophilus microplus (Canestrini), the common tick of cattle, and the diseases it transm...

  15. Susceptibility of Boophilus microplus (Canestrini, 1887 (Acari: Ixodidae to seven ixodicides in Nuevo Leon, Mexico

    Directory of Open Access Journals (Sweden)

    Jesús A. Esparza Rentería

    2015-07-01

    Full Text Available This article reports the results of research only. Mention of a proprietary product does not constitute an endorsement or a recommendation by the FAUANL for its use Animal husbandry and meat industry in Mexico are one of the principal activities of the agricultural sector of the country, which are threatened by factors that affect the production of meat, skin and milk; among these, the damages caused by Boophilus microplus (Canestrini, the common tick of cattle, and the diseases it transmits, such as anaplasmosis and babesiosis (Xianxun and Wenshun, 1997; Yeruhan et al., 1998, are of special interest. The objective of this study was to determine the susceptibility of the larvae of Boophilus microplus to seven tick-killing agents commonly used in the state of Nuevo Leon. The methodology used for the diagnosis of the susceptibility of B. microplus tick to Organochlorine, Organophosphorate and Pyrethroid compounds was the one applied by Rodriguez-Vivas et al., (2007; in which it was used a discriminant dose (table 1, using the larvae package test technique (Stone & Haydock, 1962. The results of the CL50 to the ticks of cattle in the state of Nuevo Leon, Mexico showed a greater susceptibility to Deltamethrine, followed by Chlorfenvinphos; in third place Diazinon, then Flumethrin; after that Cypermethrin, in sixth place Lindane and a less toxicological action for the Coumaphos (Asuntol. The result was already expected due to the fact that it is the most commonly used product in the control of ticks through the larval immersion technique.

  16. Biocontrol of pigeon tick Argas reflexus (Acari: Argasidae by entomopathogenic fungus Metarhizium Anisopliae (Ascomycota: Hypocreales

    Directory of Open Access Journals (Sweden)

    Mosa Tavassoli

    2011-12-01

    Full Text Available The pigeon tick Argas reflexus is a pathogen-transmitting soft tick that typically feeds on pigeons, but can also attack humans causing local and systemic reactions. Chemical control is made difficult due to environmental contamination and resistance development. As a result, there is much interest in increasing the role of other strategies like biological control. In this study, the efficacy of three strains (V245, 685 and 715C of entomopathogenic fungus Metarhizium anisopliae for biological control of three life stages of pigeon tick A. reflexus including eggs, larvae, engorged and unfed adults was investigated under laboratory conditions. Five concentrations of different strains of M. anisopliae ranging from 10³ to 10(7 conidia/ml were used. All fungal strains significantly decreased hatchability of A. reflexus eggs. Strain V245 was the most effective strain on the mortality of larval stage with nearly 100% mortality at the lowest concentration (10³ conidia/ml at 10 days post-inoculation. The mortality rate of both engorged and unfed adult ticks were also increased significantly exposed to different conidial concentrations compared to the control groups (P < 0.05 making this fungus a potential biological control agent of pigeon tick reducing the use of chemical acaricides.

  17. Biocontrol of pigeon tick Argas reflexus (Acari: Argasidae) by entomopathogenic fungus Metarhizium Anisopliae (Ascomycota: Hypocreales)

    OpenAIRE

    Mosa Tavassoli; Seyed Hassan Pourseyed; Abdulghaffar Ownagh; Iraj Bernousi; Karim Mardani

    2011-01-01

    The pigeon tick Argas reflexus is a pathogen-transmitting soft tick that typically feeds on pigeons, but can also attack humans causing local and systemic reactions. Chemical control is made difficult due to environmental contamination and resistance development. As a result, there is much interest in increasing the role of other strategies like biological control. In this study, the efficacy of three strains (V245, 685 and 715C) of entomopathogenic fungus Metarhizium anisopliae for biologica...

  18. First detection and molecular identification of Babesia vogeli from Rhipicephalus sanguineus (Acari: Ixodidae) in Taiwan.

    Science.gov (United States)

    Chao, Li-Lian; Yeh, Shu-Ting; Hsieh, Chin-Kuei; Shih, Chien-Ming

    2016-04-01

    A total of 578 Rhipicephalus sanguineus ticks collected from dogs in Taiwan were examined for Babesia by species-specific polymerase chain reaction assay based on the 18S small subunit ribosomal RNA (ssrRNA) gene. Babesia DNA was detected in 1.04 % (6/578) of Rh. sanguineus ticks. Phylogenetic analysis revealed that these Babesia spp. were genetically linked to the same clade within the genospecies of Babesia vogeli and could be discriminated from other genospecies of Babesia. Intra-species analysis based on the genetic distance values indicated a lower level (0.079) compared with other genospecies of Babesia (GD > 0.094) and out-group protozoa (GD > 0.236). This study provides the first molecular evidence of B. vogeli detected and identified in various stages of Rh. sanguineus ticks removed from dogs in Taiwan. Detection of Rh. sanguineus in flat male ticks may imply the possible mechanism of transstadial transmission in Rh. sanguineus ticks. The vector competence and the diversity of Babesia species harbored by Rh. sanguineus ticks need to be further investigated. PMID:26796569

  19. Some avian and mammalian hosts of Amblyomma hebraeum and Amblyomma marmoreum (Acari: Ixodidae).

    Science.gov (United States)

    Horak, I G; MacIvor, K M; Petney, T N; De Vos, V

    1987-09-01

    Large numbers of birds, wild mammals and domestic stock from a variety of localities within the Republic of South Africa were examined for infestation with the ixodid ticks Amblyomma hebraeum and Amblyomma marmoreum. Every warthog (Phacochoerus aethiopicus), Burchell's zebra (Equus burchelli), impala (Aepyceros melampus) and kudu (Tragelaphus strepsiceros) from the Kruger National Park in the north-eastern Transvaal Lowveld was infested with A. hebraeum. In the eastern Cape Province every helmeted guinea fowl (Numida meleagris), scrub hare (Lepus saxatilis) and kudu from the Andries Vosloo Kudu Reserve; all but 1 of the 22 domestic cattle examined on the farm "Bucklands"; and all Angora goats plus nearly all Boer goats examined on the farm "Brakhill" were infested with this tick. Most animals examined appeared to be good hosts of the immature stages, and the larger the host species the greater the chances of it harbouring large numbers of adult ticks. The largest animals examined, such as eland, buffalo, giraffe and rhinoceros, harboured very large numbers of adult A. hebraeum. No adult A. marmoreum was recovered from any host. However, 50% or more of helmeted guinea fowl and kudu from the Andries Vosloo Kudu Reserve; helmeted guinea fowl, scrub hares and eland (Taurotragus oryx) from the Mountain Zebra National Park; helmeted guinea fowl, kudu, domestic sheep, goats and cattle on the farm "Bucklands", and caracal (Felis caracal) from the Cradock and Southwell areas of the eastern Cape Province were infested with immature A. marmoreum. In the Bontebok National Park in the south-western Cape Province more than 35% of scrub hares, vaal ribbok (Pelea capreolus) and bontebok (Damaliscus dorcas dorcas) were infested with immature ticks. PMID:3329327

  20. Repellent activity of plant-derived compounds against Amblyomma cajennense (Acari: Ixodidae) nymphs.

    Science.gov (United States)

    Soares, Sara Fernandes; Borges, Lígia Miranda Ferreira; de Sousa Braga, Raquel; Ferreira, Lorena Lopes; Louly, Carla Cristina Braz; Tresvenzol, Leonice Manrique Faustino; de Paula, José Realino; Ferri, Pedro Henrique

    2010-01-20

    Repellence responses of Amblyomma cajennense nymphs to callicarpenal, intermedeol, Hyptis suaveolens essential oil, extract of Melia azedarach, Cymbopogon nardus, Spiranthera odoratissima, Chenopodium ambrosioides, Ageratum conyzoides, Mentha pulegium, Ruta graveolens, and Memora nodosa were studied. Among these the extract of C. nardus stood out because of the long-lasting repellence, maintaining, in the highest concentration, 35h of protection against 90% of the nymphs. The essential oil of H. suaveolens and the extracts of C. ambrosioides and A. conyzoides showed good repellence index (66%) when applied in high concentrations. However, greater protection could be obtained at higher concentrations but with a shorter repellence time. Callicarpenal, intermedeol, extract of M. Pulegium, and M. nodosa leaves showed moderate repellence in high concentrations. Extracts from M. azedarach, R. graveolens, S. odoratissima, and M. nodosa roots showed little or no repellent effect. These results show that some plant extracts may represent a promising alternative in the control of infestations by A. cajennense. PMID:19897309

  1. Mechanisms of insecticide resistance in field populations of varroa mite (Acari: Mesostigmata: Varroidae)in Florida

    Science.gov (United States)

    The ectoparasitic mite Varroa destuctor is a serious threat to beekeeping and crops that rely on honey bee for pollination. The Varroa mite not only causes significant damage to honey bees by feeding on their haemolymph, but also serves as a vector of disease. In addition, the Varroa mite has develo...

  2. Laboratory evaluation of miticides to control Varroa jacobsoni (Acari: Varroidae), a honey bee (Hymenoptera: Apidae) parasite.

    Science.gov (United States)

    Lindberg, C M; Melathopoulos, A P; Winston, M L

    2000-04-01

    A laboratory bioassay was developed to evaluate miticides to control Varroa jacobsoni (Oudemans), an important parasite of the honey bee, Apis mellifera L. Bees and mites were exposed to applications of essential oil constituents in petri dishes (60 by 20 mm). The registered mite control agents tau-fluvalinate (Apistan) and formic acid also were evaluated as positive controls. Treatments that caused high mite mortality (> 70%) at doses that produced low bee mortality (formic acid. The effect of mode of application (complete exposure versus vapor only) on bee and mite mortality was assessed for thymol, clove oil, and Magic3 by using a 2-chambered dish design. Estimated V. jacobsoni LD50 values were significantly lower for complete exposure applications of thymol and Magic3, suggesting that both vapor and topical exposure influenced mite mortality, whereas estimated values for clove oil suggested that topical exposure had little or no influence on mite mortality. These results indicate that essential oil constituents alone may not be selective enough to control Varroa under all conditions, but could be a useful component of an integrated pest management approach to parasitic mite management in honey bee colonies. PMID:10826162

  3. Highly variable acquisition rates of Ixodes scapularis (Acari: Ixodidae) by birds on an Atlantic barrier island.

    Science.gov (United States)

    Mitra, S S; Buckley, P A; Buckley, F G; Ginsberg, H S

    2010-11-01

    Acquisition of ticks by bird hosts is a central process in the transmission cycles of many tick-borne zoonoses, but tick recruitment by birds has received little direct study. We documented acquisition of Ixodes scapularis Say on birds at Fire Island, NY, by removing ticks from mist-netted birds, and recording the number of ticks on birds recaptured within 4 d of release. Eight bird species acquired at least 0.8 ticks bird(-1) day(-1) during the seasonal peak for at least one age class of I. scapularis. Gray Catbirds, Eastern Towhees, Common Yellowthroats, and Northern Waterthrushes collectively accounted for 83% of all tick acquisitions; and six individuals apportioned among Black-billed Cuckoo, Gray Catbird, Eastern Towhee, and Common Yellowthroat were simultaneously infested with both larvae and nymphs. Bird species with the highest acquisition rates were generally ground foragers, whereas birds that did not acquire ticks in our samples generally foraged above the ground. Tick acquisition by birds did not differ between deciduous and coniferous forests. Among the 15 bird species with the highest recruitment rates, acquisition of nymphs was not correlated with acquisition of larvae. Tick acquisition rates by individual bird species were not correlated with the reservoir competence of those species for Lyme borreliae. However, birds with high tick acquisition rates can contribute large numbers of infected ticks, and thus help maintain the enzootic cycle, even if their levels of reservoir competence are relatively low. PMID:21175049

  4. Ornithodoros peropteryx (Acari: Argasidae) in Bolivia: an argasid tick with a single nymphal stage.

    Science.gov (United States)

    Venzal, José M; Nava, Santiago; Terassini, Flavio A; Ogrzewalska, Maria; Camargo, Luis Marcelo A; Labruna, Marcelo B

    2013-10-01

    By the end of the 1960s, the argasid tick Ornithodoros peropteryx was described from larval specimens collected from the bat Peropteryx macrotis in Colombia. Since its original description, no additional record of O. peropteryx has been reported, and its post-larval stages have remained unknown. During July 2010, 18 larvae were collected from 9 bats (Centronycteris maximiliani), resulting in a mean infestation of 2.0 ± 2.2 ticks per bat (range 1-8). These bats were captured in a farm in northeastern Bolivia close to Guaporé River in the border with Brazil. Morphological examinations of the larvae revealed them to represent the species O. peropteryx. One engorged larva that was kept alive in the laboratory moulted to a nymph after 9 days. Fourteen days after the larval moulting, the nymph moulted to an adult female without taking any blood meal during the nymphal period. This adult female was used for a morphological description of the female stage of O. peropteryx. In addition, the larvae were used for a morphological redescription of this stage. One larva and two legs extirpated from the adult female were submitted to DNA extraction and PCR targeting a fragment of the mitochondrial 16S rDNA gene, which yielded DNA sequences at least 11 % divergent from any available argasid sequence in Genbank. We show that O. peropteryx ontogeny is characterized by a single, non-feeding, nymphal stage. This condition has never been reported for ticks. PMID:23543273

  5. The male genital accessory gland complex of the cattle tick Boophilus microplus (Canestrini, 1887 (Acari: Ixodidae

    Directory of Open Access Journals (Sweden)

    GARCIA-FERNANDEZ CASIMIRO

    1998-01-01

    Full Text Available A topographical and histological study of the male genital accessory gland complex of Boophilus microplus was undertaken. Ten lobes were found, the most prominent of which is the single dorso-median lobe, subdivided into antero-dorsal and postero-dorsal lobes. The other lobes are: a pair of postero-ventral lobes, a pair of lateral lobes (subdivided into dorso-lateral and postero-lateral lobes, a pair of antero-ventral lobes, a single medio-ventral lobe and a pair of latero-ventral lobes. These lobes were observed to present individual topographical and histological characteristics, with independent openings, hence the conclusion is that they form a gland complex. The secretory nature of the dorso-median lobe duct was also analysed.

  6. Toxicity of neem oil to the cassava green mite Mononychellus tanajoa (Bondar (Acari: Tetranychidae

    Directory of Open Access Journals (Sweden)

    Amanda C.B Silva

    2013-09-01

    Full Text Available Neem (Azadirachta indica A. Juss.-derived pesticides have been used against a wide range of agricultural pests including tetranychid mites. Approaches combining lethal and sublethal toxicity studies of neem pesticides towards tetranychid mites are necessary to a comprehensive evaluation of such products. Here, we evaluated the lethal and sublethal toxicity of the neem oil Bioneem to the cassava green mite Mononychellus tanajoa (Bondar by integrating lethal concentration (LC with population growth and biological parameter studies. According to Probit analyses the concentration of neem oil Bioneem which kills 50% of the population (LC50 of M. tanajoa was 3.28 ¼L cm-2, which is roughly twice the field concentration recommended of this biopesticide to control pest mites (1.7 ¼L cm-2. The growth rate of the cassava green mite steadily decreased with dosages of neem oil. Furthermore, sublethal concentrations of the neem oil corresponding to the LC50 reduced the periods of the immature stages of M. tanajoa resulting in a shorter developmental time. Similarly, the number of eggs per day and the number of eggs per female per day, a proxy for fecundity, were drastically reduced in M. tanajoa females exposed to the LC50 of neem oil. Based on our comprehensive approach we conclude that the neem oil showed lethal as well as sublethal toxicity on growth rate and biological parameters such as duration of immature stages and fecundity of the cassava green mite M. tanajoa and it could be used as an ecological alternative for the management of this pest.

  7. Detection of permethrin resistance and fipronil tolerance in Rhipicephalus sanguineus (Acari: Ixodidae) in the United States

    Science.gov (United States)

    Permethrin is a commonly used acaricide for tick control on domestic animals and in residential environments, while fipronil use is restricted to on-animal treatment. Following widespread reports of permethrin and fipronil application failures to control indoor infestations of Rhipicephalus sanguin...

  8. Morphometric Study on Male Specimens of Hyalomma Anatolicum (Acari: Ixodidae in West of Iran

    Directory of Open Access Journals (Sweden)

    M Abdigoudarzi

    2011-12-01

    Full Text Available Background: Hyalomma anatolicum is the well-known hard tick, which is one of the most important livestock and hu­man pathogens vector, wide range in host and distributed in all over the Hyalomma geographic fauna as well as in Iran. Taxonomy of the Hyalomma ssp. is debatable whereas their identification is a problematic work. The reasons for this claim is time consuming Delpy’s researches in Iran also Schulze School, Feldman-Muhsam and the Russian tick workers. We would like to understand morphometric variation in the field collected H. anatolicum in Iran also validat­ing some morphologic quantitative and qualitative characters.Methods: A total 247 field-collected tick specimens from different geographical regions in west of Iran includes Khuzestan and Lorestan Provinces were studied. The morphologic characters of the ticks were measured by the cali­brated stereomicroscope ‎armed scaled lens. The measurements were analyzed using SPSS ‎for windows, version 16 on an IBM PC, ‎so varied shapes of species in different geographic ‎regions were drawn by the ‎aid of a drawing tube con­nected to a light stereomicroscope.‎Results: One way ANOVA test revealed significant differences among the quantitative parameters in five zones (P<‎‎ 0.‎‎00‎‎1‎ also each zone to other zone by Post Hoc Tests e.g. LSD. No significant differences in the lateral grooves length/conscutum length ratio parameter were found.Conclusion: Morphometric variation in Hyalomma spp is poorly studied. The variation in range and quantity of the mor­phometric parameters of H.anatolicum ‎underlies that the correct recognition and key construction for Hyalomma spe­cies dependes ‎on a complement morphometric study on the other species.

  9. The First Report of Eustigmaeus Johnstoni (Acari: Stigmaeidae Parasitic Mite of Phlebotominae Sand Flies from Iran

    Directory of Open Access Journals (Sweden)

    Mehdi Badakhshan

    2013-03-01

    Full Text Available Background: Stigmaeids mites have been recorded only on Phlebotominae sand flies up to now. Five species of Eustigmaeus, and three of Stigmaeus were reported on infested sandflies in different country up to the present.Methods: Sand flies collection was done using CDC light trap and sticky paper. The mites were isolated from in­fested specimens, mounted in Puri’s medium and identified using reliable keys.Results: A mite infested Phlebotomus papatasi was observed during a study on sandflies of one of the southern provinces of Iran, near to the Persian Gulf. Several scars resulting from mite attachment were found on abdominal tergites of this female sand fly. The mites were identified as Eustigmaeus johnstoni.Conclusion: This parasitic mite is one of the eyeless species, which has a great distribution over the world, reported from Tunisia, Saudi Arabia, Pakistan, Yemen, Cyprus and Palestine. But, this is the first record of this species from Iran.

  10. Molecular Effects of Irradiation (Cobalt-60 on the Control of Panonychus citri (Acari: Tetranychidae

    Directory of Open Access Journals (Sweden)

    Ke Zhang

    2015-11-01

    Full Text Available The effective dose of irradiation to control pest mites in quarantine has been studied extensively, but the molecular mechanisms underlying the effects of the irradiation on mites are largely unknown. In this study, exposure to 400 Gy of γ rays had significant (p < 0.05 effects on the adult survival, fecundity and egg viability of Panonychus citri. The irradiation caused the degradation of the DNA of P. citri adults and damaged the plasma membrane system of the egg, which led to condensed nucleoli and gathered yolk. Additionally, the transcriptomes and gene expression profiles between irradiated and non-irradiated mites were compared, and three digital gene expression libraries were assembled and analyzed. The differentially expressed genes were putatively involved in apoptosis, cell death and the cell cycle. Finally, the expression profiles of some related genes were studied using quantitative real-time PCR. Our study provides valuable information on the changes in the transcriptome of irradiated P. citri, which will facilitate a better understanding of the molecular mechanisms that cause the sterility induced by irradiation.

  11. Mites (Acari: Laelapidae associated with sigmodontinae rodents in Entre Ríos Province, Argentina

    Directory of Open Access Journals (Sweden)

    Abba Agustín M

    2001-01-01

    Full Text Available The richness, diversity, abundance and prevalence of mite species associated with sigmodontine rodents of different species in Entre Ríos province, Argentina are studied. Five of the six species of mites were reported for the first time in the study area. The richness and diversity of mites was higher on Oligoryzomys flavescens and O. delticola than on Akodon azarae. Androlaelaps rotundus was dominant and exhibited higher values of mean abundance and prevalence on A. azarae, Mysolaelaps microspinosus on O. flavescens and Gigantolaelaps mattogrossensis on O. delticola.

  12. Infochemical-mediated niche use by the predatory mites Typhlodromalus manihoti and T. aripo (Acari: Phytoseiidae)

    NARCIS (Netherlands)

    Gnanvossou, D.; Hanna, R.; Dicke, M.

    2003-01-01

    In Africa, Typhlodromalus manihoti and T. aripo, two introduced predators of the cassava green mite Mononychellus tanajoa, occupy different parts of cassava foliage. In the present study, niche use by these two predators, as mediated by prey-induced infochemicals, was investigated. In response to pr

  13. New and little known species of ptyctimous mites (Acari, Oribatida) from Cameroon

    Czech Academy of Sciences Publication Activity Database

    Niedbala, W.; Starý, Josef

    2014-01-01

    Roč. 3889, č. 1 (2014), s. 31-57. ISSN 1175-5326 Institutional research plan: CEZ:AV0Z60660521 Institutional support: RVO:60077344 Keywords : ptyctimous mites * new species * taxonomy * morphology * Cameroon Subject RIV: EG - Zoology Impact factor: 0.906, year: 2014

  14. New species of .i.Euphthiracarus./i. Ewing, 1917 (Acari: Oribatida: Euphthiracaroidea) from the Afrotropical Region

    Czech Academy of Sciences Publication Activity Database

    Niedbala, W.; Starý, Josef

    2014-01-01

    Roč. 64, č. 3 (2014), s. 485-493. ISSN 0003-4541 Institutional research plan: CEZ:AV0Z60660521 Institutional support: RVO:60077344 Keywords : oribatid mites * Euphthiracaroidea * new species * Tanzania * Madagascar Subject RIV: EG - Zoology Impact factor: 1.161, year: 2014

  15. Catalogue of genera and their type species in the mite Suborder Uropodina (Acari: Mesostigmata).

    Science.gov (United States)

    Halliday, R B

    2015-01-01

    This paper provides details of 300 genus-group names in the suborder Uropodina, including the superfamilies Microgynioidea, Thinozerconoidea, Uropodoidea, and Diarthrophalloidea. For each name, the information provided includes a reference to the original description of the genus, the type species and its method of designation, and details of nomenclatural and taxonomic anomalies where necessary. Twenty of these names are excluded from use because they are nomina nuda, junior homonyms, or objective junior synonyms. The remaining 280 available names appear to include a very high level of subjective synonymy, which will need to be resolved in a future comprehensive revision of the Uropodina. PMID:26249486

  16. Resistance status of ticks (Acari; Ixodidae) to amitraz and cypermethrin acaricides in Isoka District, Zambia.

    Science.gov (United States)

    Muyobela, Jackson; Nkunika, Philip Obed Yobe; Mwase, Enala Tembo

    2015-12-01

    This study was designed to obtain data on the farmer's approach to tick control and to determine whether Rhipicephalus appendiculatus Neuman, Amblyomma variegatum (Fabricius), and Rhipicephalus (Boophilus) microplus (Canestrini) were resistant to amitraz and cypermethrin acaricides, in Isoka District, Zambia. Prevailing tick control practices were documented by administering a semi-structured questionnaire to 80 randomly selected smallholder livestock farmers from four agricultural camps (Longwe, Kantenshya, Kapililonga, and Ndeke) in Isoka District. Modified larval packet test (LPT) bioassay experiments were used to determine the resistance status of the common tick species against amitraz and cypermethrin acaricides. Fifty percent of respondents practiced chemical tick control with amitraz (27 %) and cypermethrin (23 %) being the acaricides in use, and were applied with knapsack sprayers. Less than 3 l of spray wash per animal was used which was considerably lower than the recommended delivery rate of 10 l of spray wash per animal. No significant susceptibility change to amitraz at 95 % confidence level was observed in R. appendiculatus and A. variegatum against amitraz. However, a significant change in the susceptibility of R. (Bo.) microplus tested with amitraz was detected at 95 % confidence. The test population had a lower susceptibility (LD50 0.014 %; LD90 0.023 %) than the reference population (LD50 0.013 %; LD90 0.020 %). The results indicated that resistance to amitraz was developing in R. (Bo.) microplus. For cypermethrin, no significant susceptibility change at 95 % confidence was observed in any of the three species and thus resistance to this chemical was not observed. PMID:26310511

  17. Potential nontarget effects of Metarhizium anisopliae (Deuteromycetes) used for biological control of ticks (Acari: Ixodidae)

    Science.gov (United States)

    Ginsberg, H.S.; LeBrun, R.A.; Heyer, K.; Zhioua, E.

    2002-01-01

    The potential for nontarget effects of the entomopathogenic fungus Metarhizium anisopliae (Metschnikoff) Sorokin, when used for biological control of ticks, was assessed in laboratory trials. Fungal pathogenicity was studied against convergent ladybird beetles, Hippodamia convergens Guerin-Meneville, house crickets, Acheta domesticus (L.), and milkweed bugs, Oncopeltus fasciatus (Dallas). Fungal spores applied with a spray tower produced significant mortality in H. convergens and A. domesticus, but effects on O. fasciatus were marginal. Treated insects placed with untreated individuals resulted in mortality from horizontal transmission to untreated beetles and crickets, but not milkweed bugs. Spread of fungal infection in the beetles resulted in mortality on days 4-10 after treatment, while in crickets mortality was on day 2 after treatment, suggesting different levels of pathogenicity and possibly different modes of transmission. Therefore, M. anisopliae varies in pathogenicity to different insects. Inundative applications can potentially affect nontarget species, but M. anisopliae is already widely distributed in North America, so applications for tick control generally would not introduce a novel pathogen into the environment. Pathogenicity in lab trials does not, by itself, demonstrate activity under natural conditions, so field trials are needed to confirm these results and to assess methods to minimize nontarget exposure.

  18. Supplementary description of Dolicheremaeus distinctus Aoki, 1982 (Acari: Oribatida: Tetracondylidae on the basis of Indian specimens

    Directory of Open Access Journals (Sweden)

    Ermilov, S. G.

    2013-11-01

    Full Text Available The oribatid mite species, Dolicheremaeus distinctus Aoki, 1982, is redescribed in details, on the basis ofspecimens from India. This species is recorded for the first time from India and the Oriental region. An identification key tothe Indian Dolicheremaeus is given.

  19. First records of zerconid mites (Acari: Mesostigmata: Zerconidae from Albania, with description of three new species

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    Ujvári, Zs.

    2010-06-01

    Full Text Available Elaborating a material collected from different regions of Albania, eleven species of the genus Zercon(Zerconidae were identified, three of them, Z. albanicus sp. nov., Z. cavatus sp. nov. and Z. elongatus sp. nov., proved to be newto science. Short description of male and deutonymph of Z. villosus and morphological notes on Z. spatulatus are also provided.New occurrences of each species are depicted on maps as well.

  20. New and little known oribatid mites from Madagascar (Acari: Oribatida, III

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    Mahunka, S.

    2011-06-01

    Full Text Available Further survey of the newly studied and identified oribatids from Madagascar (Malagasy Republic is given.Altogether 20 species are mentioned and listed from several sites in the island, 13 species of them are new to science and someother known only from few localities. Two species are recorded from Madagascar for the first time. With 50 figures.

  1. Two new oribatid mite species with auriculate pteromorphs from Southern Vietnam (Acari: Oribatida: Parakalummidae, Galumnidae

    Directory of Open Access Journals (Sweden)

    Ermilov, S.G.

    2012-12-01

    Full Text Available Two new oribatid mite species, Neoribates spindleformis sp. nov. and Globogalumna biporosa sp. nov. are described from soil and litter of pine and acacias artificial plantations of Dong Nai Culture and Nature Reserve (Southern Vietnam. First new species is differs from all other species of Neoribates by combination of the following characters; mor¬phology of sensilli, number of leg claws and genital setae. Second new species differs from type-species of Globogalumna by the body surface and number of notogastral porose areas. The genus Globogalumna is recorded for the first time from the Oriental region.

  2. Contribution to the knowledge of ptyctimous mites (Acari: Oribatida) from Madagascar

    Czech Academy of Sciences Publication Activity Database

    Niedbala, W.; Starý, Josef

    2013-01-01

    Roč. 59, č. 4 (2013), s. 337-345. ISSN 1217-8837 Institutional research plan: CEZ:AV0Z60660521 Institutional support: RVO:60077344 Keywords : oribatid mites * new species * Mahunka * Phthiracaroidea * Euphthiracaroidea Subject RIV: EG - Zoology Impact factor: 0.263, year: 2013

  3. A review of the Neotropical family Tetrasejaspidae (Acari: Uropodina with descriptions of three new species.

    Directory of Open Access Journals (Sweden)

    Kontschán, J.

    2008-05-01

    Full Text Available The species of the family Tetrasejaspidae Hirschmann, 1979 are listed. Three species new to sciences are described and illustrated. Diagnoses and occurrences of all the hitherto known species are given, and a key to all species is presented. With 30 figures.

  4. Dissorhina cretensis n. sp. and some other remarkable oribatid mites (Acari: Oribatida from Crete, Greece

    Directory of Open Access Journals (Sweden)

    Mahunka, S.

    2008-12-01

    Full Text Available Newly collected and identified oribatids from Crete are studied and a list of the hitherto known species is provided. Altogether 37 species are enumerated from several sites of the island, among them 23 newly identified. One species new to science, Dissorhina cretensis n. sp., is described and three known, but rare species – Chamobates dentotutorii Shaldybina, 1969, Ocesobates boedvarssoni (Sellnick, 1974 and Humerobates rostrolamellatus Grandjean, 1936 – are described and/or commented and illustrated.

  5. New species of the superfamily Euphthiracaroidea (Acari, Oribatida) from Madagascar and Tanzania

    Czech Academy of Sciences Publication Activity Database

    Niedbala, W.; Starý, Josef

    2015-01-01

    Roč. 49, 27/28 (2015), s. 1689-1702. ISSN 0022-2933 Institutional research plan: CEZ:AV0Z60660521 Institutional support: RVO:60077344 Keywords : Oribatida * ptyctimous mites * Euphthiracaridae * new species * Afrotropical region Subject RIV: EG - Zoology Impact factor: 0.881, year: 2014

  6. Photosynthetic response of soybean to twospotted spider mite (Acari: Tetranychydae) injury

    OpenAIRE

    Adeney de Freitas Bueno; Regiane Cristina Oliveira de Freitas Bueno; Paul David Nabity; Leon George Higley; Odair Aparecido Fernandes

    2009-01-01

    The twospotted spider mite Tetranychus urticae Koch is a common pest on soybean plants. To clarify plant-arthropod interaction on mite-soybean system, leaf fluorescence, photosynthetic responses to variable carbon dioxide levels, and chlorophyll content were evaluated. Significant photosynthetic rate reduction was observed due to stomatal limitation. Stomatal closure was the major plant physiological response. As a consequence, there was reduction in photosynthetic rates. Surprisingly, plants...

  7. Efeitos do nim sobre tetranychus urticae Koch (Acari: Tetranychidae) e os predadores Phytoseiulus macropilis (Banks) e Neoseiulus californicus (Mcgregor) (Acari: Phytoseiidae) Effects of neem on tetranychus urticae Koch (Acari: Tetranychidae) and the predators Phytoseiulus macropilis (Banks) and Neoseiulus Californicus (Mcgregor) (Acari: phytoseiidae)

    OpenAIRE

    Daniele Cristine Hoffmann Schlesener; Adriane Fonseca Duarte; Milton Fernando Cabezas Guerrero; Uemerson Silva da Cunha; Dori Edson Nava

    2013-01-01

    O objetivo deste trabalho foi avaliar a eficiência de controle e os efeitos adversos de dois produtos à base de nim Azamax® (Azadiractina A/B 12g/L) e Neemseto® (Azadiractina A/B, Nimbina e Salanina 2,389 g/L) sobre o ácaro-rajado Tetranychus urticae e os predadores Phytoseiulus macropilis e Neoseiulus californicus em laboratório. Para o ácaro-rajado, foram consideradas as variáveis mortalidade, fecundidade, efeito ovicida e persistência biológica, enquanto para os fitoseídeos consideraram-se...

  8. Assessment of Bacterial Communities in Thirteen Species of Laboratory-Cultured Domestic Mites (Acari: Acaridida).

    Science.gov (United States)

    Hubert, Jan; Kopecky, Jan; Sagova-Mareckova, Marketa; Nesvorna, Marta; Zurek, Ludek; Erban, Tomas

    2016-08-01

    House dust mites (HDMs) and stored-product mites (SPMs) of various species inhabit human homes and stored agricultural products. These mites are carriers and hosts of microorganisms that enable their survival. The bacteriome from 13 species of SPMs and HDMs was analyzed and compared by 454 pyrosequencing of partial 16S rRNA gene amplicons. Altogether 128,052 sequences were obtained and assigned to 71 operational taxonomic units (OTUs) at the 97% identity level. The number of sequences in the OTUs between species of mites ranged from 6 to 31 in the individual mite species. We did not find any significant effect of diet or evolutionary origin of mites or their interaction on the composition of the mite bacteriome. In mite species with low bacterial diversity, the bacterial communities were dominated by potential symbiotic or parasitic bacteria, i.e., Cardinium in Dermatophagoides farinae (Hughes, 1961) and Aeroglyphus robustus (Banks 1906) and the enteric bacteria Erwinia in Blomia tropicalis Van Bronswijk, de Cock & Oshima, 1974 and Xenorhabdus in Tyroborus lini (Oudemans, 1924). Among the bacterial species identified, Staphylococcus, Bacillus, Kocuria, Brevibacterium, Corynebacterium, and Brachybacterium likely serve as food sources for the mites. The domestic acaridid mites carried high numbers of various bacteria that are potential threats to human health. These results contribute to the general understanding of the ecology of mite adaptation to human-made habitats. PMID:27122496

  9. Efeito do controle estratégico de Amblyomma cajennense (Fabricius, 1787 (acari: ixodidae sobre a população de Anocentor nitens (Neumann, 1897 (acari: ixodidae em eqüinos Effect of the strategic control of Amblyomma cajennense (Fabricius, 1787 (acari: ixodidae on the population of Anocentor nitens (Neumann, 1897 (acari: ixodidae in equines

    Directory of Open Access Journals (Sweden)

    Arildo P. Da Cunha

    2007-12-01

    Full Text Available Objetivou-se avaliar o efeito de um programa de controle estratégico de Amblyomma cajennense sobre a população de Anocentor nitens em eqüinos. Os tratamentos carrapaticidas foram realizados a cada sete dias e divididos em dois módulos, o primeiro com início em abril de 2004 (oito tratamentos e o segundo com início em julho do mesmo ano (cinco tratamentos, utilizando-se a base química piretróide - cipermetrina na concentração de 0,015%. Avaliou-se mensalmente a carga parasitária de A. nitens no pavilhão auricular e divertículo nasal dos eqüinos antes (outubro de 2003 a março de 2004 e depois (outubro de 2004 a março de 2005 do controle estratégico com banhos carrapaticidas. Utilizaram-se escores de 0 a 3 para classificar os níveis de infestação. Entretanto, não houve redução significativa da carga parasitária de A. nitens no pavilhão auricular e no divertículo nasal dos eqüinos, possivelmente, devido a não aplicação sistemática de carrapaticida no divertículo nasal, pois, esta estrutura anatômica é um importante sítio de infestação por A. nitens em eqüinos.The objective of this study was to evaluate the effect of the Amblyomma cajennense strategic control program on the Anocentor nitens population. The acaricide treatments were carried out every seven days and divided in two series, the first one beginning in April 2004 (eight treatments and the second beginning in July of the same year (five treatments, using pyrethroid chemical base - cypermethrin in the concentration of 0,015%. Monthly it was evaluated the infestation of A. nitens in the ear and nasal diverticulum of the equines before (October 2003 to March 2004 and after (October of 2004 to March of 2005 the strategic program of acaricide treatments. It was used score of 0 to 3 to classify the infestation levels. It did not have any significant reduction of the parasitic load of A. nitens in the ear and nasal diverticulum of the equines. Possibly, due to absence of acaricide in the nasal diverticulum. Therefore, this anatomical structure it is an important place of infestation by A. nitens in equines.

  10. Rhipicephalus annulatus (Acari: Ixodidae Control by Nigella sativa, Thyme and Spinosad Preparations

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    Shawky Mohamed Aboelhadid

    2016-01-01

    Full Text Available Background: Several compounds obtained from plants have potential insecticidal, growth deterrent or repellent characteristics. The control of hard ticks by non-chemical substances was targeted in this study.Methods: The effect of 36 materials on in-vitro ticks was studied, including 2 absolute controls (water only or ab­solute ethyl alcohol only, 6 conventionally used spinosad preparations (aqueous solutions, 12 Nigella sativa (N. sativa preparations (aqueous and alcoholic solutions, and 12 Thyme preparations (aqueous and alcoholic solutions. The engorged ticks were tested in-vitro for mortality and oviposition ability using the studied materials.Results: The final mortality after 48 hours of application in N. sativa aqueous preparations began from 10.0% con­centration, 1.0% to 100% by concentration preparations ≥10%. In addition, N. sativa alcoholic preparations began from 50.0% concentration, 2 % to 100% by concentration ≥5%. Meanwhile, Thyme aqueous and alcoholic prepa­rations began from 70.0% concentration, 5% to 90% by concentration 10–20%. Additionally, spinosad aqueous preparations and both of control preparations (Water and Alcohol resulted in no mortality. All differences were sta­tistically significant. The oviposition was stopped in N. sativa (aqueous ≥10% and alcoholic ≥5% and in spinosad (aqueous≥25%. The aqoues dilution of the used matters killed B. annulatus larvae beginning from the concentration 5%.Conclusion: Nigella sativa alcohol 20% was the best of studied preparations being the lowest concentration (20% that could achieve the highest lethal (100% effect in shortest time (12 hours. Moreover, Thyme oil and spinosad could not kill 100% of adult but did on larvae.

  11. Species Diversity and Distribution of Ticks (Acari: Ixodidae in Zabol County, Eastern Iran.

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    Maryam Ganjali

    2014-12-01

    Full Text Available Ticks are important vectors of human and animal pathogens. They are considered as main vectors for transmission of many viral, bacterial, rickettsial and parasitical pathogens. The aim of the present study was to find out species diversity of ticks, which infested the domestic ruminants in Zabol County, Eastern Iran in 2012.Ticks were selected randomly from sheep, goats, cattle and camels. The ticks were collected from the body of infested animals and stored in 70% ethanol, then transported to the laboratory of Zabol University of Medical Sciences. Following examinations under stereomicroscope, ticks were identified using available taxonomic keys.In this study, a total number of 469 adult ticks (381 males and 88 females were collected. Ticks were classified into 2 genera and 9 species including: Hyalomma dromedarii (17.3%, Hy. schulzei (1.8%, Hy. marginatum (0.5%, Hy. anatolicum excavatum (12.60%, Hy. anatolicum anatolicum (11.2%, Hy. asiaticum asiaticum (11.0%, Rhipicephalus sanguineus (21.2%, Rh. bursa (10.2% and Rh. turacunis (13.911%. The frequency of genus Hyalomma (54.6% was higher than Rhipicephalus. Rh. sanguineus was the predominant tick species and accounted for 21.26% of the ticks. The ratio of males was more than the female ticks.Hyalomma and Rhipicephalus species are commonly distributed in the study area. Further investigations are needed to identify the role of above tick species as vectors of pathogenic organisms.

  12. First report of Raoiella indica Hirst (Acari: Tenuipalpidae) in South America

    Energy Technology Data Exchange (ETDEWEB)

    Vasquez, Carlos [Universidad Centroccidental Lisandro Alvarado, Barquisimeto, Estado Lara (Venezuela, Bolivarian Republic of)]. E-mail: carlosvasquez@ucla.edu.ve; Quiros de G, Magally [Universidad del Zulia, Maracaibo, Estado Zulia, (Venezuela). Museo de Artropodos; Aponte, Orlando [Universidad Central de Venezuela, Estado Aragua (Venezuela). Inst. de Zoologia Agricola; Sandoval, D. Maria F. [Ministerio del Poder Popular para la Agricultura y Tierras (Venezuela). Servicio Autonomo de Sanidad Agropecuaria

    2008-11-15

    The presence of the red palm mite, Raoiella indica Hirst is recorded for the first time in South America. High populations and severe damages caused by this new invasive mite were found on coconut and banana leaves in Sucre (10 deg 27' 47{sup N} and 64 deg 10' 38{sup W}) and Monagas (9 deg 46'60{sup N} and 63 deg 12'0{sup W}) states in northeastern Venezuela. (author)

  13. Three Species of Ectoparasite Mites (Acari: Pterygosomatidae Infested Geckos in Indonesia

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    TARUNI SRI PRAWASTI

    2013-06-01

    Full Text Available Limited data is hitherto available on the diversity and dispersal of parasitic mites of geckos in Indonesia. Here, we collected three species of geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii throughout Indonesia to study the distribution and diversity of its parasitic mites. We conducted detail morphological analysis of the mites using whole mount polyvinyl lactophenol and scanning electron microscope preparation. Three species of ectoparasite mites from genus Geckobia were identified in a total of 221 individuals out of 448 geckos collected from 25 sites in Indonesia. Two species were G. glebosum and G. bataviensis, and the other one was designated as Geckobia sp 1. Based on our result, the three mites species were spread randomly and live sympatrically. The G. bataviensis mite showed the widest distribution, because it was found in almost all gecko collection sites, hence the most cosmopolitan mites. We also found that C. platyurus gecko had the lowest mite prevalence which might due to the fact that it has the least number of skin folds, an important site for mite protection. This result implies that further research on the relationship of anatomy of gecko skin with chelicera and claw structure of mites is necessary in the future.

  14. Rhipicephalus sanguineus and R. turanicus (Acari:Ixodidae): closely related species with different biological characteristics.

    Science.gov (United States)

    Ioffe-Uspensky, I; Mumcuoglu, K Y; Uspensky, I; Galun, R

    1997-01-01

    Life cycle parameters of 2 closely related tick species, Rhipicephalus sanguineus Latreille and R. turanicus Pomerantsev, were studied under laboratory conditions. Both Rhipicephalus, which have small adults, demonstrated the same adaptations as large tick species inhabiting deserts and semideserts: high reproductive rate, decrease in egg size, and an increase in interstage growth to compensate for the smaller size at birth. Pronounced quantitative differences between both species were discerned in relation to these adaptations. Female R. turanicus produced twice as many eggs as R. sanguineus which was facilitated by the greater amount of blood engorged by females and by the smaller egg weight in R. turanicus as compared with R. sanguineus. In all developmental stages, the weight increase from unfed to fed ticks was greater in R. turanicus than in R. sanguineus (23% higher in larvae, 118% in nymphs, and 26% in females). The increase in weight in R. turanicus from the unfed larva (0.013 mg) to the unfed female (3.31 mg) was 254-fold, and in R. sanguineus it was 127-fold (from 0.021 to 2.54 mg). In nymphal R. turanicus, the higher density and the greater height of the dorsal epicuticular folds, as well as procuticular indentations found inside the folds allow this tick to stretch its alloscutum during blood engorgement to a greater extent than R. sanguineus. The rates of blood ingestion (for nymphs and females), egg maturation, and metamorphosis were 1.1-1.7 times greater in R. turanicus than in R. sanguineus. A life cycle strategy with both a higher reproductive rate and faster development in R turanicus may be explained by its greater dependence on environmental factors than that in R. sanguineus. PMID:9086715

  15. New flat mite genera (Acari: Trombidiformes: Tenuipalpidae) associated with Australian sedges (Cyperaceae)

    Science.gov (United States)

    Two new genera, Gahniacarus and Cyperacarus, and four new species, G. gersonus, G. tuberculatus, C. naomae and C. foliatus, are described from native Australian sedge species in the genus Gahnia (Cyperaceae). Leg chaetotaxy is provided for all stages of each species. The importance of taxonomic ch...

  16. Estimation of nutritional losses caused by rhizoglyphus tritici (acari: acaridae) in stored wheat

    International Nuclear Information System (INIS)

    The stored grain mites which are one of the important pests of stored grains can modify the chemical composition of the stored wheat. The change in quality of wheat grains in terms of physical characteristics (thousand kernel weight, moisture, wet and dry gluten), chemical characteristics (crude protein, crude fat, fiber, ash and starch) and flour quality tests (falling number and dough rheological characteristics) of wheat variety lasani-08 when infested by varying levels of mite infestation for six months were observed under laboratory conditions. Maximum moisture contents (18.13%) were observed in grains having highest number of mites (7513), while minimum moisture contents (16.40%) were found in the grains without mites. Thousand kernel weight, wet gluten, dry gluten, crude protein, fat and starch contents were found minimum in the treatments having maximum number of mite population that was 26.07g, 23.33%, 7.13%, 10.07%, 0.72% and 64.14% respectively as compared to control which was 38.50g, 30.47%, 9.20%, 13.85%, 1.28% and 66.17% after six months of storage. The fiber contents increased significantly in highly infested grains (3.47%) as compared in control (1.07%). The ash contents increased in the infested grains, which was from 1.23% in control to 3.47% in the treatment initially treated with 20 pairs of mites. Falling number, water absorption, dough development time, dough stability, mixing tolerance index and softening of dough was also decreased to 428.33 sec, 56.03%, 3.27 min, 4.30 min, 49.67 bu and 76.67 bu, respectively in the highly infested grains as compared to control which was 651.67 sec, 60.73%, 5.13 min, 6.03 min, 67.67 bu and 141.67 bu, respectively. The results will help to determine the nutritional changes in mite infested wheat during storage. (author)

  17. Study of Acari and Collembola Populations in Four Cultivation Systems in Dourados - MS

    OpenAIRE

    Rosilda Mara Mussury; Silvana de Paula Quintão Scalon; Sandra Verza da Silva; Valdirene Regis Soligo

    2002-01-01

    The impact four cultivation systems on the soil fauna was studied, using Oribatida and Gamasida acarids as bioindicators and collembolan. The research was carried out in experimental fields, located in EMBRAPA - CPAO in Dourados, Centerwest of Brazil from July 1997 to December 1999. The constant pasture system presented smaller impact on the soil fauna followed by agricultural cattle rotation and a direct plantation system. In the conventional plantation series, the populational density of th...

  18. The patterns of seasonal activity of Ixodes vespertilionis (Acari: Ixodidae) on Rhinolophus hipposideros in nursery colonies.

    Science.gov (United States)

    Piksa, Krzysztof; Górz, Andrzej; Nowak-Chmura, Magdalena; Siuda, Krzysztof

    2014-02-01

    The aim of this study was to describe the dynamics of the long-legged bat tick Ixodes vespertilionis infestation on the lesser horseshoe bat Rhinolophus hipposideros in 2 nursery colonies roosting in attics. Out of a total of 810 lesser horseshoe bats examined, 217 (26.8%) were found to be infested with a total of 464 I. vespertilionis individuals. The developmental stage most frequently found was the larva, followed by the nymph, and the adult female. Bats were significantly more frequently infested with I. vespertilionis ticks in the period April to May than in other months. In these months, all tick developmental stages were observed. During summer and autumn, only immature developmental stages were recorded, whilst in September and October larvae predominated. Considerable differences in tick load between nursery colonies were observed. The length of seasonal presence on bats, prevalence, and infestation intensity of I. vespertilionis on lesser horseshoe bats were higher in the nursery colony situated in close vicinity of a cave than in the colony situated far from the caves. The results suggest that the pattern of seasonal infestation of ticks on bats roosting in nursery colonies coincides with the seasonal activity of Rh. hipposideros in the caves. The first case of mixed infestation of the lesser horseshoe bat with I. vespertilionis and I. ricinus were also recorded. PMID:24252260

  19. Continental comparisons of the interaction between climate and the herbivorous mite, Floracarus perrepae (Acari : Eriophyidae)

    OpenAIRE

    Goolsby, J.A.; Jesudasan, R.W.A.; Jourdan, Hervé; Muthuraj, B.; Bourne, A.S.; Pemberton, R.W.

    2005-01-01

    The Old World climbing fern, Lygodium microphyllum, is an invasive weed in the Florida Everglades and the leaf roll galling mite, Floracarus perrepae, is a proposed biological control agent. Field studies were conducted for one to two years at sites in its native range in Australia, New Caledonia, and India to evaluate the effect of climate on F perrepae. Monthly counts of the proportion of L. microphyllum subpinnae (leaflets) with leaf roll galls were used to measure the incidence of damage ...

  20. A new species of Eutrachytes (Acari: Uropodina: Eutrachytidae) associated with the indian mangrove (Avicennia officinalis)

    Digital Repository Service at National Institute of Oceanography (India)

    Moraza, M.L.; Kontschan, J.; Sahoo, G.; Ansari, Z.A.

    September 2015; accepted 13 November 2015; published online 04 March 2016) 1 Departamento de Biología Ambiental, Facultad de Ciencias, Universidad de Navarra, Pamplona E-31080, Spain. mlmoraza@unav.es (* Corresponding author) 2 Plan Protection Institute...

  1. A new species of the genus Acarothrix (Acari: Halacaridae) from Brunei Darussalam and India

    Digital Repository Service at National Institute of Oceanography (India)

    Chatterjee, T.; Marshall, D.J.; Guru, B.C.; Ingole B.S.; Pesic V.

    Acarothrix grandocularis sp. nov. is described from specimens collected in Brunei Darussalam and India. The new species is characterized by the presence of dorsal seta 1 on the posterior part of anterior dorsal plate, a triangular posterior margin...

  2. Irradiation as a phytosanitary treatment for mites of the specie Tyrophagus putrescentiae (Acari: Acaridae)

    Energy Technology Data Exchange (ETDEWEB)

    Arthur, Valter, E-mail: varthur@cena.usp.b [Centro de Energia Nuclear na Agricultura (CENA/USP), Piracicaba, SP (Brazil). Lab. de Radiobiologia e Ambiente; Mineiro, Jeferson L.C. [Instituto Biologico de Sao Paulo/APTA, Sao Paulo, SP (Brazil). Lab. de Entomologia Economico

    2009-07-01

    In great populations mites of the specie Tyrophagus putrescentiae can cause damages in stored products. The work had as objective to evaluate the effects of the gamma radiation of the Cobalt-60 to control the mites of the specie T. putrescentiae. The mites were irradiated with doses of 0 (control), 300, 400, 500, 600, 700, 800 Gy, in a source of Cobalt-60 type Gammacell-220, with a dose rate of 0.718 kGy/hour. Each treatment consisted of four repetitions containing 10 mites each, in a total of approximately 40 mites for treatment. The evaluations were daily, being counted the number of mites died, put eggs and emerged larvae. Based on the obtained results it was concluded that the dose sterilizing for the mites of this specie was of 300 Gy. Already the dose of 600 Gy induced the total mortality of the mites after 11 days of the irradiation process. (author)

  3. Bacteria of the genus Rickettsia in ticks (Acari: Ixodidae) collected from birds in Costa Rica

    Czech Academy of Sciences Publication Activity Database

    Ogrzewalska, M.; Literák, I.; Čapek, Miroslav; Sychra, O.; Calderón, V. Á.; Rodríguez, B. C.; Prudencio, C.; Martins, T. F.; Labruna, M. B.

    2015-01-01

    Roč. 6, č. 4 (2015), s. 478-482. ISSN 1877-959X R&D Projects: GA AV ČR IAA601690901 Institutional support: RVO:68081766 Keywords : Rickettsia * Ticks * Birds * Ixodes * Amblyomma * Costa Rica Subject RIV: EG - Zoology Impact factor: 2.718, year: 2014

  4. New genus and three new species of quill mites (Acari: Syringophilidae: Picobiinae) parasitising puffbirds (Aves: Piciformes).

    Science.gov (United States)

    Skoracki, Maciej; Scibek, Katarzyna; Sikora, Bozena

    2012-09-01

    Abstract: Three new species, belonging to the newly proposed genus Pseudopicobia gen. n., inhabiting body quill feathers of puff-birds (Piciformes: Bucconidae), are described: P nonnula sp. n. from Nonnula frontalis (Sclater) in Colombia, P malacoptila sp. n. from Malacoptila panamensis Lafresnaye in Colombia and P hapaloptila sp. n. from Hapaloptila castanea (Verreaux) in Ecuador. The new genus differs from morphologically similar genus Picobia Heller, 1878 by the absence of the genital setae, absence of the genital lobes, solenidia phiI represented by microsetae, and by the presence of setiform solenidia sigma I. Syringophilid mites are recorded from birds of this family for the first time. PMID:23136804

  5. Inhibition of the classical pathway of the complement system by saliva of Amblyomma cajennense (Acari: Ixodidae).

    Science.gov (United States)

    Franco, Paula F; Silva, Naylene C S; Fazito do Vale, Vladimir; Abreu, Jéssica F; Santos, Vânia C; Gontijo, Nelder F; Valenzuela, Jesus G; Pereira, Marcos H; Sant'Anna, Mauricio R V; Gomes, Alessandra P S; Araujo, Ricardo N

    2016-05-01

    Inhibition of the complement system during and after haematophagy is of utmost importance for tick success in feeding and tick development. The role of such inhibition is to minimise damage to the intestinal epithelium as well as avoiding inflammation and opsonisation of salivary molecules at the bite site. Despite its importance, the salivary anti-complement activity has been characterised only in species belonging to the Ixodes ricinus complex which saliva is able to inhibit the alternative and lectin pathways. Little is known about this activity in other species of the Ixodidae family. Thus, the aim of this study was to describe the inhibition of the classical pathway of the complement system by the saliva of Amblyomma cajennense at different stages of the haematophagy. The A. cajennense saliva and salivary gland extract (SGE) were able to inhibit the complement classical pathway through haemolytic assays with higher activity observed when saliva was used. The anti-complement activity is present in the salivary glands of starving females and also in females throughout the whole feeding process, with significant higher activity soon after tick detachment. The SGE activity from both females fed on mice or horses had no significant correlation (p > 0.05) with tick body weight. The pH found in the intestinal lumen of A. cajennense was 8.04 ± 0.08 and haemolytic assays performed at pH 8.0 showed activation of the classical pathway similarly to what occurs at pH 7.4. Consequently, inhibition could be necessary to protect the tick enterocytes. Indeed, the inhibition observed by SGE was higher in pH 8.0 in comparison to pH 7.4 reinforcing the role of saliva in protecting the intestinal cells. Further studies should be carried out in order to identify the inhibitor molecule and characterise its inhibition mechanism. PMID:26948715

  6. First report of an hypopus (Acari: Hypoderatidae) from a jaeger (Aves: Charadriiformes: Stercorariidae)

    Science.gov (United States)

    Pence, Danny B.; Cole, R.A.

    1995-01-01

    Thalassornectes (Alcidectes) aukletae, originally described from two species of auklets (Charadriiformes: Alcidae) from maritime eastern Russia, is reported from a third species of pelagic charadriiform (Stercorariidae), the pomarine jaeger, Stercorarius poinarinus (Temminck), from Florida. The specimens from the jaeger are slightly smaller, the genital apodeme is more heavily sclerotized, paired setae gm are twice as long and there are other minor variations in the idiosomal and leg chaetotaxy. These differences are not considered sufficient to warrant taxonomic separation at the species or subspecies level from the nominate species T. (A.) aukletae. The same hypopus occurring across different families of birds is unusual in the Hypoderatidae. The diversity in hosts from several orders of birds, low intensities of infection in the two species from Africa, low prevalences in alcids from Russia, and rarity of these hypoderatids in all surveyed hosts leads us to speculate that the true host affinities of species in the genus Thalassornectes are unknown. The alternative consideration is that these are simply uncommon species that are very host specific.

  7. Eriophyoid mites from Eastern India: description of three new species (Acari: Prostigmata: Eriophyoidea).

    Science.gov (United States)

    Debnath, Pranab; Karmakar, Krishna

    2016-01-01

    Three new eriophyoid mite species, namely Dichopelmus puncti n. sp. (Eriophyidae) from cogan grass, Imperata cylindrica (Poaceae); Calacarus kalyaniensis n. sp. (Eriophyidae) from Siam weed, Chromolaena odorata (Asteraceae) and Neorhynacus bidhanae n. sp. (Diptilomiopidae) from Croton caudatus (Euphorbiaceae), are described and illustrated from West Bengal, India. The new species are vagrants on the leaves of their respective host plants with no visible damage observed. Keys to the known species of Dichopelmus and Neorhynacus are provided along with a checklist of eriophyoid mites species present in West Bengal. PMID:27395518

  8. A new species of the genus Neogalumna (Acari, Oribatida, Galumnidae from China

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    Liang, Wenqin

    2014-06-01

    Full Text Available A new species of oribatid mites of the family Galumnidae, Neogalumna longiporosa sp. nov., is described from dark loamy soil collected under moss in North Eastern China. It is the first identified member of the genus Neogalumna recorded for China. An identification key to the known species of Neogalumna is also given.

  9. Notes on Kaszabjbaloghia with the description of a new species from Ecuador (Acari: Mesostigmata: Uropodidae

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    Jenõ Kontschán

    2010-02-01

    Full Text Available Kaszabjbaloghia Hirschmann, 1973, distributed in South-America, is characterized by the following combination of characters: reduced marginal shield, posteromarginal setae placed on membranous cuticle on the dorsal idiosoma, linguliform genital shield in females, oval or egg-like genital shield bearing one pair needle-like setae in males, and the characteristic shape of peritremes. In this contribution, I provide short redescriptions of the known species of Kaszabjbaloghia and describe a new species, K. ecuadorica sp. nov., from Ecuador. The new species is similar to K. kaszabi Hirschmann, 1973, but differs from the latter in the ornamentation of genital shield of the female and the number of sternal cavities. Additionally, we transfer K. hirschmanni Hiramatsu, 1978 to Hutufeideria Hirschmann & Hirmatsu, 1977 (as Hutufeideria hirschmanni (Hiramatsu, 1978 comb. nov. on the basis of the following: setation of dorsal shield, ornamentation of caudal part of the dorsal shield, shape of hypostomal setae, shape of internal malae and setation of the palp. An identification key to the species of Kaszabjbaloghia is also provided. Original illustrations and scanning micrographs are provided for all species.

  10. Effect of fast electrons on the reproductive biology of the grain mite Acarus siro (Acari: Acaridae)

    International Nuclear Information System (INIS)

    The effect of fast electrons on the reproductive biology of the grain mite Acarus siro was investigated in the laboratory at 25±1°C and 85% RH. Irradiation of adults with substerilizing doses of fast electrons significantly reduced fecundity and egg viability of the mite. The number of spermatophores found in the bursa of treated females was also considerably reduced. However, no change in the shape of the spermatophores was observed. It was not known whether the decrease in fecundity and egg viability was the result of the drop in spermatophore production or to the death of sperm cells. Fast electrons had less effect upon fecundity than the same dose of gamma radiation. However, irradiation by fast electrons had a similar effect on egg viability (expressed in percentage), number of spermatophores produced per individual, and number of adult F1 progeny. Fast-electron doses above 0.4 kGy caused sterility of the mite

  11. Sociodemographic characteristics and risk factor analysis of Demodex infestation (Acari: Demodicidae)*

    OpenAIRE

    Zhao, Ya-e; Guo, Na; Xun, Meng; Xu, Ji-ru; Wang, Mei; Wang, Duo-lao

    2011-01-01

    To identify sociodemographic characteristics and risk factor of Demodex infestation, 756 students aged 13–22 years in Xi’an, China were sampled for the school-based cross-sectional study. Demodex was examined using the cellophane tape method (CTP). The results showed that the total detection rate of Demodex was 67.6%. Logistic regression analysis revealed that five variables (gender, residence, sharing sanitary ware, frequency of face-wash per day, and use of facial cleanser) were found to be...

  12. Preliminary molecular characterizations of Sarcoptes scaibiei (Acari: Sarcoptidae) from farm animals in Egypt.

    Science.gov (United States)

    Amer, Said; El Wahab, Taher Abd; Metwaly, Abd El Naby; Ye, Jianbin; Roellig, Dawn; Feng, Yaoyu; Xiao, Lihua

    2014-01-01

    Little is known about the genetic diversity of Sarcoptes scabiei mites in farm animals in Egypt. In this study, we characterized S. scabiei in 25 skin scrapes from water buffalo, cattle, sheep, and rabbits at the nuclear marker ITS2 and mitochondrial markers COX1 and 16S rRNA. Sequences of the ITS2 showed no host segregation or geographical isolation, whereas those of the mitochondrial COX1 and 16S rRNA genes indicated the presence of both host-adapted and geographically segregated populations of S. scabiei. Host adaptation may limit inter-species transmission of. S. scabiei, thus restrict gene flow among S. scabiei from different hosts. This is the first report on the molecular characterization of sarcoptic mites in Egypt. Further genetic studies involving larger numbers of specimens, especially those from humans and companion animals, are needed to understand the molecular epidemiology of sarcoptic mange in Egypt. PMID:24728386

  13. Revealing the diversity of a once small taxon: the genus Selenoribates (Acari, Oribatida, Selenoribatidae

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    Tobias Pfingstl

    2013-06-01

    Full Text Available Three new intertidal oribatid species, Selenoribates elegans sp. n., Selenoribates quasimodo sp. n. and Selenoribates satanicus sp. n. are described from the archipelago of Bermuda. Selenoribates elegans sp. n. is characterized by its slender body shape, S. quasimodo sp. n. possesses a hunchback in lateral view and S. satanicus sp. n. exhibits two horn-like projections on its anterior gastronotic region. Based on these new findings, the number of Selenoribates species doubled at once and the distribution of this genus, formerly limited to the Mediterranean and the Red Sea, includes now occurrences in the Atlantic and Indo-pacific Ocean as well. The morphology of S. quasimodo sp. n. and S. satanicus sp. n. deviates conspicuously from the other known members of Selenoribates, thus indicating that not only the number of species but also the anatomy of this genus is more diverse than formerly supposed. Nymphs of S. quasimodo sp. n. show an interesting case of ontogenetic neotrichy, with gastronotic setae being duplicated with each moult.

  14. Efecto de Aceites Esenciales de Lavanda y Laurel sobre el Ácaro Varroa destructor Anderson & Truemann (Acari:Varroidae The Effect of Lavender and Laurel Essential Oils on Varroa destructor Anderson & Truemann (Acari:Varroidae

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    Miguel Neira C.

    2004-07-01

    Full Text Available La varroasis es considerada la más seria enfermedad parasitaria de las abejas (Apis mellifera L. y es provocada por el ácaro Varroa destructor Anderson & Truemann. Una gran cantidad de productos han sido probados para el control de esta enfermedad parasitaria. Actualmente se han generado razas resistentes, problemas de contaminación de la miel y de otros productos de la colmena, debido al uso indiscriminado y reiterado de algunos productos contra este ácaro. La tendencia actual es el uso de productos naturales como parte de una estrategia de control integrado. Esta investigación tuvo como objetivo evaluar los efectos de los aceites esenciales extraídos de Lavandula officinalis Chaix y Laurelia sempervirens (Ruiz et Pav. Tul. sobre el ácaro Varroa destructor. La unidad experimental consistió en una jaula con 15 abejas, cada una parasitada con un ácaro. Se emplearon cuatro tratamientos: aceite esencial de lavanda (30%, aceite esencial de laurel (30% acetona pura y un testigo, que recibió agua destilada. Los productos se aplicaron en la jaula, en una cámara climática, con condiciones similares a la colmena. El periodo de evaluación se extendió por 24 h, con intervalos de 1, 3, 5, 8, 14 y 24 h. Ambos aceites esenciales removieron el 100% de los ácaros, sin embargo, el porcentaje de mortalidad de los ácaros fue bajo, 41,67 y 35%, para aceite de lavanda y aceite de laurel, respectivamente.The varroasis is considered the most serious parasitic disease of honey bees (Apis mellifera L.; it is produced by the mite Varroa destructor Anderson & Truemann. A large number of products have been tested for the control of this parasitic disease. Currently, resistant races, problems of contamination of honey and other products of the hive have been generated by the indiscriminate and reiterated use of some products against this mite. The current tendency for its control is the utilization of natural products as part of an integrated control strategy. This investigation had the objective of evaluating the effects of essential oils, extracted from lavender (Lavandula officinalis Chaix and laurel (Laurelia sempervirens Ruiz et Pav. Tul. on V. destructor. The experimental unit, consisted of a cage with 15 bees, each affected by one mite. Four treatments were employed: essential oil of lavender (30%, essential oil of laurel (30%, pure acetone, and the control that received distillated water. Products were applied in the cage, in a climatic chamber, with similar conditions to the hive. The period of evaluation lasted 24 h, at intervals of 1, 3, 5, 8, 14 and 24 h. Both essential oils removed 100% of the mites, however, the percentage of mortality of the mite was low, 41.67 and 35% for lavender oil and laurel oil, respectively.

  15. Mortalidade do ácaro predador Neoseiulus californicus (Acari: Phytoseiidae em testes de toxicidade residual de inseticidas e acaricidas usuais em pomáceas Mortality of predatory mite Neoseiulus californicus (Acari: Phytoseiidae in residual toxicity persistence tests

    Directory of Open Access Journals (Sweden)

    Marcelo Gustavo Ruiz

    2008-12-01

    Full Text Available Os ácaros fitoseídeos, especialmente Neoseiulus californicus (McGregor, são importantes agentes de controle biológico de ácaros tetraniquídeos-praga nas culturas de pomáceas no "Alto Valle del Río Negro y Neuquén", Argentina. Neste trabalho, avaliou-se a mortalidade de N. californicus quando exposto a resíduos dos inseticidas azimphos-methyl, carbaryl e cyfluthrin, e dos acaricidas cyhexatin e propargite. Os produtos foram aplicados às concentrações recomendadas em plantas de pereira. Um, três, seis e dez dias após a aplicação (DAA, folhas tratadas foram retiradas das plantas para a preparação de unidades experimentais. Cinco adultos de N. californicus, provenientes de criação-estoque, foram transferidos para cada unidade, onde pólen de taboa foi fornecido como alimento. As unidades foram mantidas a 25 ± 2 ºC, 60 ± 10% de umidade relativa e fotoperíodo de 14 h. A mortalidade do ácaro foi avaliada 24 h após o confinamento. As médias de mortalidade foram comparadas pelo teste de Dunnett, a 5% de probabilidade. A progressão do declínio do efeito dos produtos testados foi submetida à análise de regressão. Nas duas primeiras datas de avaliação, todos os produtos apresentaram valores de mortalidade significativamente diferentes da testemunha tratada com água. Seis dias após a aplicação, propargite, cyhexatin e cyfluthrin apresentaram mortalidade de aproximadamente 30%, enquanto a mortalidade nos tratamentos azimphos-methyl e carbaryl apresentou níveis estatisticamente similares aos da testemunha. Dez dias após a aplicação, a mortalidade em todos os tratamentos não diferiu significativamente da testemunha. O efeito de todos os produtos apresentou declínio progressivo ao longo do período de observação, sendo significativa a 1% de probabilidade a regressão linear negativa para os valores obtidos. Os maiores efeitos negativos sobre a sobrevivência de N. californicus corresponderam aos acaricidas testados. Azimphos-methyl foi o produto que menos afetou a sobrevivência do ácaro predador. Os inseticidas testados, usados na região do "Alto Valle del Río Negro y Neuquén" para o controle de Cydia pomonella, praga-chave das culturas de pomáceas, apresentaram baixa toxicidade sobre N. californicus.Phytoseiid mites, mainly Neoseiulus californicus (McGregor, are important biological control agents of Tetranychidae pest mites in pip fruit crops in the region known as "Alto Valle del Río Negro y Neuquén", Argentina. We assessed the mortality of N. californicus when exposed to residues of the insecticides azimphos-methyl, carbaryl and cyfluthrin, as well as the acaricides cyhexatin and propargite. Pear plants were sprayed up to dip-point with pesticides in their recommended label concentrations. One, 3, 6 and 10 days after application (DAA, leaves were collected from treated plants and used to establish experimental arenas. Five adult laboratory-reared N. californicus specimens were transferred into each arena which contained Southern cattail pollen as food source. Experimental arenas were kept at 25 ± 2 ºC, 60 ± 10% RH and a photoperiod of 14 hours. Mite mortality was assessed 24 hours after the confinement. The completely randomized design was adopted for data statistical analysis, mortality means were compared by Dunnett's test (p < 0.05. Progression of pesticide's effect decline was submitted to regression analysis. On 1 and 3 DAA mean mortality in all of the treatments was significantly different from that of the water-treated control. On the sixth DAA, propargite, cyhexatin and cyfluthrin treatments caused about 30% mortality, while mortality levels in treatments with azimphos-methyl and carbaryl were statistically similar to that of control treatment. On the tenth DAA, mortality in none of the pesticide treatments differed from that of control. All of the pesticide treatments presented progressive decline throughout the experimental period, being significant (p < 0.01 the negative linear regression obtained. Tested acaricides produced the greatest negative effects on the survival of N. californicus. Azimphos-methyl was the pesticide that least affected the survival of the predatory mite. Tested insecticides, used in the "Alto Valle del Río Negro y Neuquén" region to control codling moth, C. pomonella, key pest of pip fruit crops, showed low toxicity to N. californicus.

  16. Toxicidade residual de alguns agrotóxicos recomendado na agricultura sobre Neoseiulus californicus (McGregor (Acari: Phytoseiidae Residual toxicity of some pesticides recommended for citrus orchards on the predaceous mite Neoseiulus californicus (McGregor (Acari: phytoseiidae

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    Marcos Zatti da Silva

    2007-04-01

    Full Text Available O objetivo do trabalho foi avaliar a toxicidade residual de alguns agrotóxicos utilizados em citros sobre Neoseiulus californicus (McGregor em condições de laboratório. O método de bioensaio adotado foi o de contato residual. Folhas de citros da variedade Pêra, acondicionadas em arenas, foram pulverizadas em torre de Potter. A toxicidade residual dos produtos foi avaliada duas horas e 1; 3; 5; 7; 10; 14 e 21 dias após a aplicação. Em cada arena, foram transferidas dez fêmeas adultas de N. californicus, juntamente com uma quantidade suficiente de Tetranychus urticae, como fonte de alimento. As avaliações de mortalidade foram realizadas 72 horas após a transferência dos ácaros para as arenas. Os agrotóxicos acrinathrin, deltamethrin, dinocap, enxofre, fenpropathrin, óxido de fenbutatin e propargite não causaram mortalidades significativas em adultos de N. californicus. Foram registradas mortalidades de 29,8; 24,0 e 34,1% para ácaros N. californicus expostos a resíduos de duas horas de idade de abamectim, azocyclotin e cyhexatin, respectivamente. Dicofol, pyridaben e chlorfenapyr causaram 100% de mortalidade aos ácaros predadores expostos aos resíduos tóxicos dos acaricidas, com duas horas de idade. Abamectin provocou mortalidade significativa por um período inferior a um dia. Resíduos dos acaricidas azocyclotin, cyhexatin, dicofol, pyridaben e chlorfenapyr provocaram mortalidades significativas por períodos de 1; 1; 10; 10 e 21dias, respectivamente. Os resultados obtidos no presente experimento servem de subsídio para a escolha adequada dos agrotóxicos a serem utilizados em pomares de citros nos quais N. californicus esteja presente ou naqueles em que o predador venha a ser liberado. Esses resultados também servem para a escolha do momento mais favorável para a liberação dos ácaros predadores dessa espécie no campo, após a aplicação de agrotóxicos nos pomares. Estudos conduzidos em condições de campo ainda são necessários para se compreender melhor o efeito desses agrotóxicos sobre o ácaro predador.This study was carried out to evaluate the residual toxicity of some pesticides used in citrus orchards, on Neoseiulus californicus (McGregor under laboratory conditions. The residual contact bioassay method was adopted. Citrus leaves of the variety "Pêra" were sprayed in a Potter tower. The products' residual toxicity was evaluated at two hours and 1, 3, 5, 7, 10, 14 and 21 days after treatment. Ten adult females of N. californicus were transferred to each arena together with an enough amount of Tetranychus urticae to feed the predator. Mortality evaluations were performed at 72 hours after transferring the predaceous mites to the arenas. The pesticides acrinathrin, deltamethrin, dinocap, sulphur, fenpropathrin, fenbutatin oxide and propargite did not cause significant mortalities to the adults of N. californicus. Abamectim, azocyclotin and cyhexatin caused mortalities of 29.8, 24.0 and 34.1%, respectively, for N. californicus adults exposed to two-hour pesticide residues. Dicofol, pyridaben and chlorfenapyr caused 100% of mortality to the predators exposed to the two-hour acaricide residues. Abamectin provoked significant mortalities for a period shorter than one day. Residues of azocyclotin, cyhexatin, dicofol, pyridaben and chlorfenapyr caused significant mortalities for periods of 1, 1, 10, 10 and 21 days, respectively. The results of this study provided basic information for choosing the adequate pesticides to be used in citrus orchards in which N. californicus is present, or in those the predator will be released. The results are also useful for the decision of the best releasing time for N. californicus in the field, after pesticide applications. Studies carried out in the field are still necessary to understand better the effect of these pesticides under the predaceous mite.

  17. CONTROL TEST TO MICRO ACARID Aculops lycopersici (Massee, 1937 (ACARI: ERIOPHYIDAE ATTACKING TOMATO PLANT, USING A NEW ACARID-KILLER ENSAIO DE CONTROLE AO MICROÁCARO DO TOMATEIRO Aculops lycopersici (Massee, 1937 (Acari: Eriophyidae COM UM NOVO ACARICIDA

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    Roberto Magno de Castro e Silva

    2007-09-01

    Full Text Available

    This experiment was conducted in a tomato culture area in the surroundings of the Agronomy School of UFG with the objective of evaluate the effect of a new acarid-killer named avermectin against Aculops lycopersici (Massee, 1937, the tomato plant micro acarid. The experimental delineation used was random blocks with six treatments and four replicates. Treatments utilized were: Avermectin (Vertimec 18 CE, 50, 75 and 100 ml/100 1 of water; Cyhexatin (Plictran 50 BR 100 g/100 l of water; Sulphur (Kumulus 80% PM, 400g/100 1 of water and control. Pulverizations were made by using a portable costal sprayer, applying 30 ml of solution per plant. Estimations were made at 3, 7, 10, 14 and 21 days after treatments, sampling 10 leaves at random of 10 plants pertaining to 2 central lines of each parcel and counting the number of acarids aiming an area of 0.7 cm2/leaf. The results showed that the product avermectin was superior to other acarid-killers in all estimations realized, presenting a control efficiency close to 95% at smaller dosage, until 21 days. Cybexatin and sulphur reduced its efficiency during the experiment development.

    O experimento foi conduzido numa área de plantação de tomate, nas proximidades da Escola de Agronomia da UFG, com o objetivo de avaliar o efeito de um novo acaricida denominado avermectin, contra Aculops lycopersici (Massee, 1937, o microácaro do tomateiro. O delineamento experimental foi de blocos ao acaso com seis tratamentos e quatro repetições. Os tratamentos utilizados foram: Avermectin (Vertimec 18 CE, 50, 75 e 100 ml/l00 1 de água; Cyhexatin (Plictran 50 BR. 100 g/100 1 de água; Enxofre (Kumulus 80% PM. 400 g/100 1 de água e Testemunha. As aplicações foram efetuadas com um pulverizador costal manual jacto, gastando-se 30 ml de calda por planta. As avaliações foram realizadas aos 3, 7, 10, 14 e 21 dias após a aplicação, onde amostrou-se 10 folhas ao acaso, de 10 plantas das duas linhas centrais de cada parcela e contou-se o número de ácaros visando a uma área de 0,7 cm2/folha. Os resultados obtidos mostraram que o produto avermectin foi superior aos outros acaricidas, apresentando uma eficiência de controle de aproximadamente 95%, na menor dosagem, até 21 dias. O cyhexatin e o enxofre foram reduzindo sua eficiência ao longo do desenvolvimento do ensaio.

  18. Parasitismo em humano por Amblyomma sp (Acari: Ixodidae, na cidade de Recife, estado de Pernambuco Parasitism by Amblyomma sp (Acari: Ixodidae in humans in the city of Recife, state of Pernambuco, Brazil

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    Rafael Antonio do Nascimento Ramos

    2010-10-01

    Full Text Available INTRODUÇÃO: Os ixodídeos pertencentes ao gênero Amblyomma são encontrados no Brasil, sendo de grande importância em Saúde Pública por representarem risco na transmissão de patógenos. MÉTODOS: Este trabalho relata um caso de parasitismo em humano por Amblyomma sp, ocorrido na Cidade de Recife, Pernambuco. RESULTADOS: O parasitismo foi observado em uma senhora onde os ectoparasitos encontravam-se fixados em suas pernas e pés. CONCLUSÕES: Este tipo de achado é incomum e constitui o primeiro relato do parasitismo em humano por Amblyomma sp, no Estado de Pernambuco.INTRODUCTION: The Amblyomma genus is widely distribution in Brazil and is important regarding the public health risk represented by the transmission of pathogens. METHODS: This paper reports a case of parasitism in humans by Amblyomma sp that occurred in the City of Recife, State of Pernambuco. RESULTS: Parasitism was observed in a woman where the ticks were attached to her legs and feet. CONCLUSIONS: This finding is unusual and is the first report of parasitism in humans by Amblyomma sp in State of Pernambuco.

  19. Comparação da eficiência de diferentes armadilhas utilizadas para a captura de Dermanyssus gallinae (Acari: Dermanyssidae (de Geer, 1778 Comparison of different sampling traps for Dermanyssus gallinae (Acari: Dermanyssidae (de Geer, 1778

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    Lucas M. Cunha

    2009-12-01

    Full Text Available O presente trabalho teve como objetivo comparar a eficiência de armadilhas de papel corrugado com a de armadilhas de colmo de bambu taquaril (Phyllostachys sp. seco na captura de Dermanyssus gallinae, presentes em uma bateria de gaiolas de metal utilizadas na criação de galinhas de postura. A presença de ovos no interior de cada tipo de armadilha foi comparada por meio do teste de Qui-Quadrado e pelo intervalo de confiança para duas proporções. Os valores das somas de estágios móveis nas diferentes armadilhas a cada intervalo de tempo foram comparados utilizando-se o teste de Wilcoxon. A proporção de armadilhas contendo ovos não foi diferente nos dois tipos de armadilha (p This work aims to compare the performance of corrugated paper and "taquaril" bamboo (Phyllostachys sp. straw traps for collecting (in sampling Dermanyssus gallinae in a metal cages battery laying hens. The presence of eggs in the two trap models were compared using a Qui-square test and a proportion confidence interval test. Total daily values of mobile instars gathered in each type of trap were compared using the Wilcoxon's test. The amount of traps containing eggs was not different in neither of the traps (p < 0,05. The number of mobile instars sampled at every two days per trap model was different (p < 0,01. Counting in the corrugated paper traps showed a Gauss distribution histogram and was superior to the values of the bamboo straw traps.

  20. Comparação da eficiência de diferentes armadilhas utilizadas para a captura de Dermanyssus gallinae (Acari: Dermanyssidae) (de Geer, 1778) Comparison of different sampling traps for Dermanyssus gallinae (Acari: Dermanyssidae) (de Geer, 1778)

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    Lucas M. Cunha; Mariana M. Cunha; Romário C. Leite; Silva, Israel J.; Paulo R. Oliveira

    2009-01-01

    O presente trabalho teve como objetivo comparar a eficiência de armadilhas de papel corrugado com a de armadilhas de colmo de bambu taquaril (Phyllostachys sp.) seco na captura de Dermanyssus gallinae, presentes em uma bateria de gaiolas de metal utilizadas na criação de galinhas de postura. A presença de ovos no interior de cada tipo de armadilha foi comparada por meio do teste de Qui-Quadrado e pelo intervalo de confiança para duas proporções. Os valores das somas de estágios móveis nas dif...

  1. A gallery of the key characters to ease identification of Dermanyssus gallinae (Acari: Gamasida: Dermanyssidae) and allow differentiation from Ornithonyssus sylviarum (Acari: Gamasida: Macronyssidae)

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    Di Palma Antonella; Giangaspero Annunziata; Cafiero Maria; Germinara Giacinto S

    2012-01-01

    Abstract Background Dermanyssus gallinae (poultry red mite) is a major threat for the poultry industry and is of significant interest for public health. Identification of D. gallinae can be difficult for scientists not familiar with mite morphology and terminology especially when trying to use identification keys. Moreover, this species may easily be confused with another dermanyssoid mite, Ornithonyssus sylviarum (northern fowl mite), which often shares the same hosts and environment. Method...

  2. Desarrollo ontogenético y redescripción del adulto de Epidamaeus mitlsensillus (Acari: Oribatida: Damaeidae Ontogenetic development and redescription of the adult of Epidamaeus mitlsensillus (Acari: Oribatida: Damaeidae

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    Ricardo Iglesias

    2012-12-01

    Full Text Available Se describe e ilustra el desarrollo ontogenético completo de Epidamaeus mitlsensillus Palacios-Vargas, 1984 (larva, protoninfa, deutoninfa y tritoninfa, del volcán Popocatépetl, Estado de México; asimismo, se redescribe el adulto. Los ejemplares fueron aclarados, disecados y montados en preparaciones semipermanentes con líquido de Hoyer para su observación y toma de mediciones. Las ilustraciones, que se presentan en láminas, fueron realizadas con ayuda de cámara clara, entintadas y luego escaneadas.The complete ontogenetic development of Epidamaeus mitlsensillus Palacios-Vargas, 1984 (larva, protonymph, deutonymph, and tritonymph from the Popocatepetl Volcano, State of México, is described and illustrated and redescription of the adult is done. The specimens were cleared, dissected and mounted on semi-permanent slides in Hoyer's solution for observation and measurements. Drawings were done using a camera lucida, then inked, scanned, and arranged in plates.

  3. Amblyomma rotundatum (Koch, 1844 (Acari: Ixodidae two-host life-cycle on Viperidae snakes Ciclo dioxênico em Amblyomma rotundatum (Koch, 1844 (Acari: Ixodidaeparasitando serpentes da família Viperidae

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    Daniel Sobreira Rodrigues

    2010-09-01

    Full Text Available Amblyomma rotundatum is an ixodid tick that infests ectothermic animals and reproduces exclusively by parthenogenesis. This tick has been frequently reported to infest reptiles and amphibians, under natural conditions and sometimes in captivity. It was described in Brazil and several other countries of South, Central and North America. Although many studies have reported aspects of its biology, none of them has used regularly either ophidian as hosts, or controlled temperature, humidity and luminosity for parasitic stages. The objective of this experiment was to study the life cycle of A. rotundatum feeding on Viperidae snakes under room controlled conditions at 27 ± 1 ºC temperature, 85 ± 10% relative humidity and 12:12 hours photoperiod for parasitic stages, and under B.O.D incubator conditions at 27 ± 1 ºC temperature, 85 ± 10% relative humidity and scotophase for non-parasitic stages. The total duration of the life cycle ranged from 56 to 163 days (mean of 105 days. Two-host life cycle was observed for most of the ixodid population studied.Amblyomma rotundatum é um carrapato da família Ixodidae, parasito de animais pecilotérmicos, e que se reproduz exclusivamente por partenogênese. Este carrapato é frequentemente relatado infestando répteis e anfíbios em condições naturais e, às vezes, em animais de cativeiro. Ele já foi relatado no Brasil e em vários outros países das Américas do Sul, Central e do Norte. Embora muitos estudos sobre sua biologia tenham sido publicados, nunca foram utilizados ofídios como hospedeiros e, tão pouco, foram realizados ensaios com os estádios parasitários sob condições controladas de temperatura, umidade e iluminação. O objetivo deste experimento foi estudar o ciclo biológico de A. rotundatum se alimentando em serpentes da família Viperidae sob condições ambientais controladas a 27 ± 1 ºC de temperatura, 85 ± 10% de umidade relativa do ar e 12:12 horas de fotoperíodo para estágios parasitários; assim como sob condições iguais a 27 ± 1 ºC de temperatura, 85 ± 10% de umidade relativa do ar e escotofase em estufas de germinação para estádios não parasitários. A duração total do ciclo de vida variou de 56 a 163 dias (média de 105 dias. Observou-se ciclo dioxênico para a a maior parte da população dos ixodídeos em estudo.

  4. New host records for Amblyomma rotundatum (Acari: Ixodidae) from Grussaí restinga, Rio de Janeiro, Brazil Novos registros de hospedeiros para Amblyomma rotundatum (Acari: Ixodidae) da restinga de Grussaí, Rio de Janeiro, Brasil

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    Lúcio André Viana; Gisele Regina Winck; Marlon Almeida-Santos; Felipe Bottona da Silva Telles; Gilberto Salles Gazêta; Carlos Frederico Duarte Rocha

    2012-01-01

    Amblyomma rotundatum Koch is a parthenogenetic tick usually associated with reptiles and amphibians. However, relatively few studies on occurrences of ticks in wild reptile populations in Brazil have been produced. The aim of this study was to analyze the presence of ticks associated with reptile species in the Grussaí restinga, in the municipality of São João da Barra, state of Rio de Janeiro, Brazil. Between December 2010 and January 2011, 131 individuals belonging to nine species of reptil...

  5. New host records for Amblyomma rotundatum (Acari: Ixodidae from Grussaí restinga, Rio de Janeiro, Brazil Novos registros de hospedeiros para Amblyomma rotundatum (Acari: Ixodidae da restinga de Grussaí, Rio de Janeiro, Brasil

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    Lúcio André Viana

    2012-09-01

    Full Text Available Amblyomma rotundatum Koch is a parthenogenetic tick usually associated with reptiles and amphibians. However, relatively few studies on occurrences of ticks in wild reptile populations in Brazil have been produced. The aim of this study was to analyze the presence of ticks associated with reptile species in the Grussaí restinga, in the municipality of São João da Barra, state of Rio de Janeiro, Brazil. Between December 2010 and January 2011, 131 individuals belonging to nine species of reptiles of the order Squamata were sampled: the lizards Tropidurus torquatus (n = 51, Hemidactylus mabouia (n = 25, Mabuya agilis (n = 30, Mabuya macrorhyncha (n = 6, Cnemidophorus littoralis (n = 5 and Ameiva ameiva (n = 10; and the snakes Philodryas olfersii (n = 2, Oxyrhopus rhombifer (n = 1 and Micrurus corallinus (n = 1. The only tick species found to be associated with any of the reptiles sampled was A. rotundatum. One adult female was detected on one individual of the lizard A. ameiva, one nymph on one individual of the lizard T. torquatus and four nymphs on one individual of the snake P. olfersii. This study is the first record of parasitism of A. rotundatum involving the reptiles T. torquatus and P. olfersii as hosts. Our results suggest that in the Grussaí restinga habitat, A. rotundatum may use different species of reptiles to complete its life cycle.Amblyomma rotundatum Koch é um carrapato partenogenético geralmente associado a répteis e anfíbios. Entretanto existem relativamente poucos estudos sobre a ocorrência de carrapatos em populações silvestres de répteis no Brasil. O objetivo deste estudo foi analisar a presença de carrapatos associados às espécies de répteis em uma comunidade na restinga de Grussaí, município de São João da Barra, Estado do Rio de Janeiro, Brasil. Foram amostradas, entre os meses de dezembro de 2010 e janeiro de 2011, 131 indivíduos pertencentes a nove espécies de répteis da ordem Squamata: lagartos Tropidurus torquatus (n = 51; Hemidactylus mabouia (n = 25, Mabuya agilis (n = 30, Mabuya macrorhyncha (n = 6, Cnemidophorus littoralis (n = 5 e Ameiva ameiva (n = 10, e serpentes Philodryas olfersii (n = 2, Oxyrhopus rhombifer (n = 1 e Micrurus corallinus (n = 1. A única espécie de carrapato encontrada associada a espécimes de répteis foi A. rotundatum, tendo sido encontrada uma fêmea adulta em um indivíduo do lagarto A. ameiva, uma ninfa em um T. torquatus e quatro ninfas em uma serpente P. olfersii. O presente estudo constitui o primeiro registro do parasitismo de A. rotundatum nos répteis T. torquatus e P. olfersii como hospedeiros. Nossos resultados sugerem que no habitat da restinga de Grussaí, A. rotundatum pode utilizar diferentes espécies de répteis para a realização do seu ciclo de vida.

  6. Oxicenus maxwelli (Keifer (Acari: Eriophyidae danificando a cultura da oliveira, Olea europaea L., no Estado do Rio Grande do Sul Oxicenus maxwelli (Keifer (Acari: Eriophyidae damaging olive tree, Olea europaea L., in Rio Grande do Sul State

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    Marcelo Perrone Ricalde

    2012-05-01

    Full Text Available O micro ácaro da oliveira Oxicenus maxwelli (Keifer, 1939 foi identificado em pomares de oliveira nos municípios de Santana do Livramento, Bagé, Candiota, Pelotas e Rio Grande, RS, nos meses de novembro de 2010 a fevereiro de 2011. A espécie foi encontrada nas faces superior e inferior de folhas jovens, em flores e brotos, onde causa deformações, queda de folhas e flores, diminuição da fotossíntese e superbrotação, prejudicando a produção da planta e a comercialização dos frutos deformados. Este é o primeiro registro da espécie atacando a oliveira no Estado do Rio Grande do Sul.The olive bud mite Oxicenus maxwelli (Keifer, 1939 was identified in olive groves in the municipalities of Santana do Livramento, Bagé, Candiota, Pelotas and Rio Grande, RS in November 2010 to February 2011. The specie was found on the upper surface and under surface of young leaves, flowers and buds where it causes deformities, loss of leaves and flowers, decreased photosynthesis and budding, damaging the plant's production and marketing of deformed fruits. This is the first record of the species attacking the olive tree in the state of Rio Grande do Sul.

  7. Desarrollo ontogenético y redescripción del adulto de Epidamaeus mitlsensillus (Acari: Oribatida: Damaeidae) Ontogenetic development and redescription of the adult of Epidamaeus mitlsensillus (Acari: Oribatida: Damaeidae)

    OpenAIRE

    Ricardo Iglesias; Rocío Vázquez; José G. Palacios-Vargas

    2012-01-01

    Se describe e ilustra el desarrollo ontogenético completo de Epidamaeus mitlsensillus Palacios-Vargas, 1984 (larva, protoninfa, deutoninfa y tritoninfa), del volcán Popocatépetl, Estado de México; asimismo, se redescribe el adulto. Los ejemplares fueron aclarados, disecados y montados en preparaciones semipermanentes con líquido de Hoyer para su observación y toma de mediciones. Las ilustraciones, que se presentan en láminas, fueron realizadas con ayuda de cámara clara, entintadas y luego esc...

  8. Controle estratégico de Amblyomma cajennense (Fabricius, 1787 (acari: xodidae em eqüinos, Minas Gerais, Brasil - Parte I Strategic control of Amblyomma cajennense (Fabricius, 1787 (acari: ixodidae on horses, Minas Gerais, Brazil - Part I

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    Arildo P. Da Cunha

    2007-12-01

    Full Text Available Objetivou-se verificar a eficiência de um programa de controle estratégico de Amblyomma cajennense em eqüinos sob condições de campo. Os tratamentos carrapaticidas foram realizados a cada sete dias e divididos em dois módulos: o primeiro com início em abril e término em maio de 2004 (oito banhos e o segundo com início e término em julho de 2004 (cinco banhos, visando atingir as larvas e ninfas do carrapato. Empregou-se a base química piretróide - cipermetrina 0,015%, para banhar os eqüinos. Após o programa de controle houve uma redução de 44,85% da carga parasitária de adultos do carrapato no período de outubro de 2004 a março 2005, e de 59,74%, em fevereiro e março de 2005. Os resultados demonstraram a efetividade do controle estratégico. No entanto, consideram-se importantes fatores operacionais e de gerenciamento que podem interferir na aplicação prática desta tecnologia.The aim of this study was to verify the efficiency of a strategic control program of Amblyomma cajennense in horses under field conditions. Acaricide treatments were applied at seven days intervals and divided in two series, the first one beginning in April 2004 (eight treatments, and the second one beginning in July 2004 (five treatments, aiming to control larvae and nymphs of the tick. A pyrethroid chemical base cypermethrin 0.015% was used for spraying the horses. There was a reduction of 44.85% in the adults infestetion of the tick in the period of October 2004 to March 2005, and 59.74%, in February and March 2005. Results showed the effectiveness of the strategic control. Important administrative and operational procedures can interfere with the practical application of this technology, and should be considered.

  9. The parasitism of Ixodes luciae (Acari: Ixodidae on marsupials and rodents in Peruvian Amazon O parasitismo do Ixodes luciae (Acari: ixodidae em marsupiais e em roedores na Amazônia Peruana

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    María Mónica Díaz

    2009-01-01

    Full Text Available In this work the infestation with I. luciae on Didelphimorphia and Rodentia in different environments of Peruvian Amazon was studied. Didelphimorphia was represented by the family Didelphidae. Specimens belonging to Caluromys lanatus, Didelphis marsupialis, Marmosops sp.2, Metachirus nudicaudatus, Philander andersoni and Philander opossum were infested with adults I. luciae and one Micoureus sp. was infested with larvae. In Rodentia, the infestation with I. luciae nymphs was restricted to Hylaeamys perenensis, Hylaeamys yunganus and Oligoryzomys microtis, while one Oecomys bicolor (all Cricetidae was infested with larvae of this species. The few larvae were found on rodents captured in primary forest. The only significant difference (P No presente trabalho, infestações por Ixodes luciae em Didelphimorphia e Rodentia em diferentes ambientes da Amazônia peruana foram estudadas. Didelphimorphia foi representada pela família Didelphidae. Espécimes pertencentes a Caluromys lanatus, Didelphis marsupialis, Marmosops sp., Metachirus nudicaudatus, Philander andersoni e Philander opossum foram encontrados infestadas por adultos de I. luciae; um Micoureus sp. foi encontrado infestado por larvas. Em Rodentia, a infestação por ninfas de I. luciae estiveram restritas a Hylaeamys perenensis, Hylaeamys yunganus e Oligoryzomys microtis, enquanto que um Oecomys bicolor (todos Cricetidae esteve infestado por larvas de I. luciae. As poucas larvas foram encontradas em roedores capturados na floresta primária. A única diferença significante (P < 0.05 na prevalência de carrapatos adultos em Didelphimorphia foi entre P. andersoni e M. nudicaudatus (distribuição chi-quadrado. A distribuição de carrapatos adultos foi significativamente diferente em P. andersoni quando comparado com M. nudicaudatus, P. opossum e D. marsupialis (teste Kruskal-Wallis. Nenhum efeito significante do mês ou ambiente foi observado em relação à infestação por carrapato adulto em Didelphimorphia. Tanto a prevalência de infestações por ninfas, como a distribuição do carrapato indicaram que H. perenensis e H. yunganus estiveram mais propensos a estarem infestados por ninfas de I. luciae do que O. microtis. A prevalência de infestações por ninfas foi maior em florestas primária e secundária do que em áreas rurais, enquanto que a abundância foi maior em floresta secundária, quando comparada com áreas rurais (P < 0.05. O teste Kruskal-Wallis indicou diferenças (P < 0.05 para infestações por ninfas durante Dezembro, em relação a Janeiro, Março, Abril e Junho. O ciclo natural de I. luciae parece ser continuo, destacado por adultos parasitando Philander e ninfas parasitando Hylaeamys em ambientes florestais.

  10. First record of Parakosa flexipes (Acari: Chirodiscidae parasitizing a free-tailed bat (Chiroptera: Molossidae in Brazil Primeiro registro de Parakosa flexipes (Acari: Chirodiscidae parasitando um morcego-de-cauda-livre (Chiroptera: Molossidae no Brasil

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    Luiz Antonio Costa Gomes

    2012-12-01

    Full Text Available The present study reports the occurrence of Parakosa flexipes (Pinichpongse (Chirodiscidae for the first time in Brazil, along with its infection sites on Molossus rufus E. Geoffroy. Thirty-eight bats were caught using mist nets that were placed near a house at the Mars Center for Cocoa Science in the state of Bahia, of which 14 (37% were parasitized by P. flexipes. Parakosa flexipes was observed parasitizing M. rufus on hairs that were evidently longer than others distributed over the bat's body, where up to three parasites could be spotted on a single hair.O presente estudo registra a ocorrência de Parakosa flexipes (Pinichpongse pela primeira vez no Brasil, bem como seus sítios de infecção em Molossus rufus E. Geoffroy. Foram capturados 38 morcegos com redes-de-neblina, dispostas próximas a uma residência da "Mars Center for Cocoa Science" no Sul da Bahia, dos quais 14 (37% estavam parasitados por P. flexipes. Parakosa flexipes foi observada parasitando M. rufus em pelos evidentemente maiores que os demais distribuídos pelo corpo do morcego, onde se pôde observar até três parasitos em um único pelo.

  11. Parâmetros biológicos e tabela de vida de Tetranychus urticae (Acari: Tetranychidae em cultivares de mamão Biological parameters and life table of Tetranychus urticae (Acari: Tetranychidae at papaya cultivars

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    Larissa Bernardino Moro

    2012-03-01

    Full Text Available Este trabalho foi realizado para avaliar o desenvolvimento e reprodução de Tetranychus urticae em cultivares comerciais de mamão Carica papaya. Foram utilizadas cultivares do grupo "Formosa" ("Tainung 01" e "Calimosa" e do grupo "Solo" ("Golden" e "Sunrise". Para iniciar o bioensaio, foi transferida uma fêmea fertilizada por disco de folha (n=50 repetições e retirado após um período de 12h, sendo avaliada a cada 12h, registrando-se o período de incubação, duração do estágio de imaturo, longevidade e fecundidade dos adultos e viabilidade desses estágios. Os resultados indicaram que as cultivares de mamão "Tainung 01", "Calimosa", "Sunrise" e "Golden" são bons hospedeiros para T. urticae. O parâmetro viabilidade não sofreu influência das cultivares em todas as fases de desenvolvimento avaliadas, apresentando valores superiores a 90%. Não houve diferença estatística entre as cultivares nos parâmetros: período de pre-oviposição e viabilidade dos ovos. A cultivar "Tainung 01" apresentou menor potencial hospedeiro, embora houvesse menor duração nos estágios de ovo, larva, protoninfa e ovo-adulto. Nos parâmetros de tabela de vida e fertilidade, apresentou menores valores de Ro, r m e λ e maior valor de Td. Entre as cultivares, o "Sunrise" apresentou um elevado potencial hospedeiro para T. urticae, pois essa cultivar proporcionou a maior produção de ovos por fêmea, maior longevidade das fêmeas, bem como a maior taxa de reprodução (maior Ro, r m e λ e menor valor de Td.The study was conducted to evaluate the Tetranichus urticae development and reproduction in commercial Carica papaya cultivars. The assayed cultivars belongs to the "Formosa" ("Tainung 01" and "Calimosa" and from the "Solo" ("Golden" and "Sunrise" groups. A fertilized female was transferred to a leaf dish (n=50 repetitions and was removed after a period of 12 hours and evaluations were done every 12 hours recording the incubation period, length of immature stage, longevity and fecundity of adults and viability of these stages. The cultivars of papaya, "Tainung 01", "Calimosa", "Sunrise" and "Golden" are adequate hosts for T. urticae. The recorded viability above 90% was not influenced by the different cultivars during all the development phases. There was not statistic difference among the cultivars in the parameters: pre-ovopositional period, and egg viability. Mites assayed in "Tainung 01" cultivar showed a shorter duration of the egg, larva, protonymph and egg-adult. At life table parameters and fertility, presented smaller Ro, r m and λ, and larger Td. "Sunrise" is the cultivar most adequate for T. urticae development, considering that mites assayed in this cultivar showed a larger production of eggs per female, longer female longevity, and higher reproduction rate (larger Ro, r m and λ and smaller Td.

  12. First records of the ticks Amblyomma calcaratum and A. pacae (Acari: Ixodidae parasitizing mammals of Mexico Primeros registros de las garrapatas Amblyomma calcaratum y A. pacae (Acari: Ixodidae parasitando mamíferos de México

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    Carmen Guzmán-Cornejo

    2006-06-01

    Full Text Available Based on study of ticks deposited in the Colección Nacional de Ácaros, Instituto de Biología, Universidad Nacional Autónoma de México, we report the first records in Mexico for two species of Amblyomma: Amblyomma calcaratum ex Tamandua mexicana, and Amblyomma pacae ex Tapirus bairdii. These new records increase the number of species recorded for the genus Amblyomma in Mexico to 26.Basado en la revisión de garrapatas depositadas en la Colección Nacional de Ácaros, Instituto de Biología, Universidad Nacional Autónoma de México, establecemos los primeros registros en México para 2 especies del género Amblyomma: Amblyomma calcaratum ex Tamandua mexicana y Amblyomma pacae ex Tapirus bairdii. Estos nuevos registros incrementan a 26 el número de especies del género Amblyomma distribuidas en México.

  13. Morphological description of Amblyomma brasiliense Aragão, 1908 (Acari: Ixodidae larvae and nymphs Descrição morfológica de larvas e ninfas de Amblyomma brasiliense Aragão, 1908 (Acari: Ixodidae

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    Gustavo Seron Sanches

    2009-09-01

    Full Text Available The immature stages of Neotropical ticks are poorly known and in many cases have not been described. This work presents a morphological description of Amblyomma brasiliense larvae (F1 and a redescription of nymphs (F1. A. brasiliense is reported as one of the most aggressive ticks to humans in Brazil. Immature ticks obtained from a laboratory colony initiated from adult specimens collected in the Parque Estadual Intervales (24º 18' S and 48º 24' W, São Paulo, Brazil, were analyzed under scanning electron microscope, and also under light and stereoscopic microscopes. A. brasiliense larvae present basis capituli rectangular; short palpi; rounded idiosoma; coxa I with two spurs, the external one being longer than the internal one; and coxae II and III each with one short spur. Nymphs present basis capituli rectangular with a sharp pointed cornua; oval idiosoma with scutum reaching coxa III; coxa I with two evident spurs, the external one being longer than the internal one; coxae II-III each with one short spur; and coxa IV with a very short spur and chitinous tubercles on internal surface of posterior border of idiosoma. These morphological features, in association with chaetotaxy and porotaxy, should make possible the identification of immature Amblyomma ticks.Os estágios imaturos dos carrapatos Neotropicais são pouco conhecidos e, em muitos casos, não estão descritos. Este trabalho apresenta uma descrição morfológica das larvas (F1 e redescrição das ninfas (F1 do carrapato Amblyomma brasiliense, relatado como um dos ixodídeos mais agressivos ao homem no Brasil. Para este fim, carrapatos imaturos de uma colônia iniciada com espécimes adultos do Parque Estadual de Intervales, São Paulo, Brasil foram analisados sob microscopia eletrônica de varredura, microscopia de luz e lupa estereoscópica. Observou-se que larvas têm a base do capítulo retangular, palpos curtos e idiossoma arredondado, coxa I com dois espinhos, sendo o externo mais longo que o interno e coxas II e III com um espinho. Ninfas têm a base do capítulo retangular com córnua pontiaguda, idiossoma oval, coxa I com dois espinhos evidentes, sendo o externo mais longo que o interno, coxas II e III com um espinho curto em cada uma e coxa IV com um espinho muito pequeno, presença de tubérculos quitinosos na superfície interna da borda posterior do idiosoma. Estas características, associadas à quetotaxia e porotaxia, poderão tornar possível a identificação dos estágios imaturos de carrapatos do gênero Amblyomma.

  14. Canis familiaris, UN NUEVO HOSPEDERO DE Ornithodoros (A. puertoricensis FOX, 1947 (ACARI: IXODIDA EN COLOMBIA Canis familiaris, a New Host of Ornithodoros (A. puertoricensis Fox, 1947 (Acari: Ixodida in Colombia

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    LUIS E PATERNINA

    Full Text Available Las garrapatas revisten gran importancia en el campo biomédico por sus hábitos hematófagos y asociación con la transmisión de agentes patógenos a humanos y animales. El objetivo de esta investigación fue establecer las especies de garrapatas que parasitan perros en tres poblaciones del área rural del Caribe colombiano. Durante los meses de agosto y diciembre del año 2006 se realizó búsqueda activa de garrapatas sobre caninos domésticos de las localidades de El Campín, Sabanas del Potrero y Escobar Arriba, departamento de Sucre. Las garrapatas recolectadas fueron almacenadas en viales con etanol al 70% e identificadas empleando claves morfológicas de referencia para cada familia. Para la determinación de especie en la familia Argasidae se realizaron estimaciones morfométricas de estructuras externas. Se recolectaron 420 garrapatas a partir de 50 caninos infestados, de un total de 134 perros examinados, que corresponde a una tasa de infestación del 37,3%. Las garrapatas fueron identificadas como Rhipicephalus sanguineus, Rhipicephalus (Boophilus microplus y Amblyomma ovale pertenecientes a la familia Ixodidae, y Ornithodoros (Alectorobius puertoricensis de la familia Argasidae. La especie predominante fue R. sanguineus (92,1% en los estados de larva, ninfa y adulto, seguida por larvas de O. puertoricensis, que fueron halladas en menor número sobre caninos de las tres localidades. Se registra, por primera vez en América, el parasitismo de O. puertoricensis sobre caninos domésticos y se confirma su presencia en Colombia.Ticks are very important from the biomedical point of view, by their hematophagic activity and their role in the transmission of pathogenic microorganisms to man and animals. The main goal of this work was to establish the tick species parasiting dogs in three rural localities of the Colombian Caribbean. From August to December 2006, an active search of ticks on dogs was carried out in the localities of El Campín, Sabanas del Potrero and Escobar Arriba, department of Sucre. The collected ticks were preserved into eppendorf tubes with 70% ethanol, and identified using standard morphological keys for each family. Argasid species were determined by measuring external morphological characters. Of 134 examined dogs in the three localities, 50 were found infested by ticks, representing a infestation rate of 37,3%. A total of 420 ticks were collected from dogs and identified as Rhipicephalus sanguineus, Rhipicephalus (Boophilus microplus, and Amblyomma ovale of the Ixodidae family, and Ornithodoros puertoricensis of the Argasidae family. R. sanguineus was the predominant species (92,1% in the stages of larva, nymph and adult, following by O. puertoricensis larvae recorded in low numbers in the three regions sampled. The tick O. puertoricensis is recorded for the first time as ectoparasite of domestic dogs in America. Additionally, the presence of this tick species is confirmed in Colombia.

  15. First records of the ticks Amblyomma calcaratum and A. pacae (Acari: Ixodidae) parasitizing mammals of Mexico Primeros registros de las garrapatas Amblyomma calcaratum y A. pacae (Acari: Ixodidae) parasitando mamíferos de México

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    Carmen Guzmán-Cornejo; Tila M. Pérez; Santiago Nava; Alberto A. Guglielmone

    2006-01-01

    Based on study of ticks deposited in the Colección Nacional de Ácaros, Instituto de Biología, Universidad Nacional Autónoma de México, we report the first records in Mexico for two species of Amblyomma: Amblyomma calcaratum ex Tamandua mexicana, and Amblyomma pacae ex Tapirus bairdii. These new records increase the number of species recorded for the genus Amblyomma in Mexico to 26.Basado en la revisión de garrapatas depositadas en la Colección Nacional de Ácaros, Instituto de Biología, Univer...

  16. INTEGRACIÓN DE CONTROL BIOLÓGICO Y DE PRODUCTOS ALTERNATIVOS CONTRA Tetranychus urticae (ACARI: TETRANYCHIDAE INTEGRATION OF BIOLOGICAL CONTROL AND ALTERNATIVE PRODUCTS AGAINST Tetranychus urticae (ACARI: TETRANYCHIDAE

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    Alberto Soto

    Full Text Available Tetranychus urticae es una importante plaga asociada al cultivo de fresa debido a las altas densidades poblacionales alcanzadas y a los daños ocasionados a las plantas. Los productores utilizan acaricidas en grandes volúmenes sin cumplir los periodos de carencia, ocasionando residuos tóxicos en los frutos, desarrollo de poblaciones resistentes a los productos, destrucción de organismos benéficos, intoxicación de mamíferos y contaminación del medio ambiente. Por lo tanto, es necesario generar otras alternativas de manejo de este ácaro plaga. El objetivo de este trabajo fue evaluar, mediante el análisis conjunto de la concentración letal y subletal, la acción tóxica de productos comerciales a base de nim sobre los ácaros T. urticae y Phytoseiulus macropilis. Fueron controladas poblaciones de T. urticae en plantas de fresa cuando se emplearon concentraciones correspondientes a CL95 de los productos alternativos a base de nim, y también cuando se utilizaron concentraciones inferiores. La aplicación de los productos a base de nim, Neem Pro, Organic Neem y Natuneem en la CL95 y cuando la tasa instantánea de crecimiento poblacional ri=0,1 para el predador representan una alternativa viable para el control del ácaro fitófago T. urticae.Tetranychus urticae is an important pest associated with strawberry, due to its high densities and plant damage. Farmers use acaricides in large volumes without complying with the window between the last application and harvest, resulting on toxic residues in fruits, as well as pest populations resistant to pesticides, decrement of beneficial organisms, mammalian toxicity and environmental pollution. Therefore, it is necessary to generate new alternatives for the control of this mite. The aim of this work was to evaluate the toxic effect of commercial neem-based products on the mites T. urticae and Phytoseiulus macropilis, through a combined analysis using both, lethal and sublethal concentrations. Tetranychus urticae populations were controlled in strawberry plants when neem was used at or below LC95 concentrations. The application of the neem-based products, Neem Pro, Organic Neem and Natuneem at CL95, and when the instantaneous predator’s rate of population increase ri = 0.1, represents a viable alternative to be considered for the control of the phytophagous mite T. urticae.

  17. Ácaros predadores (Acari em plantas nativas e cultivadas do Estado do Rio Grande do Sul, Brasil Predators mites (Acari in native and cultivated plants of the State of Rio Grande do Sul, Brazil

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    Noeli Juarez Ferla

    2002-12-01

    Full Text Available This research was carried out in twenty counties of the following regions in the state of Rio Grande do Sul: Plain, Central Depression, Plateau and Coast Plain to find out the diversity of mite predators in these places. Forty-six vegetable species were sampled, thirty species of miles of the families Anystidae, Ascidae, Cheyletidae, Cunaxidae, Phyloseiidae and Stigmaeidae were mel. The Phytoseiidae were the mite that presented the greatest diversity, being present in the majority of the sample plants. Most of the Phytoseiidae that were met belong to five species of the Euseius Wainstein, 1962 genus, the second genus of this family was Iphiseiodes DeLeon, 1966, with just one species. The Stigmaeidae come up as second family in number but fewer than Phytoseiidae. In this family, the most common mite belong to the Agistemus Sumers, 1960 genus. The biggest of the mites species (13 species, was met in Morus spp. (Moraceae and Tabebuia spp. (Bignoniaceae; Phaseolus vulgaris (Papilionaceae; only one species of the mite was met in Campomanesia spp. (Myrtaceae, Phaseolus vulgaris (Papilionaceae and Rosa spp. (Rosaceae. In Alamanda spp.(Apocinaceae, Ficus spp. (Moraceae, Jacaranda mimosifolia (Bignoniaceae and Solanum spp. (Solanaceae were met mites predators. A dichotomic key is presented to separate the families, genus and species of the mites.

  18. Standardization of a rearing procedure of Tetranychus urticae Koch (Acari: Tetranychidae) on bean (Phaseolus vulgaris): plant age and harvest time; Padronizacao da criacao de Tetranychus urticae Koch (Acari: Tetranychidae) em feijoeiro (Phaseolus vulgaris): idade da planta e tempo de colheita

    Energy Technology Data Exchange (ETDEWEB)

    Bustos, Alexander; Cantor, Fernando; Cure, Jose R; Rodriguez, Daniel [Universidade Militar Nueva Granada, Bogota (Colombia). Facutad de Ciencias. Programa de Biologia Aplicada], e-mail: fernando.cantor@unimilitar.edu.co

    2009-09-15

    A rearing technique was standardized to produce Tetranychus urticae Koch on Phaseolus vulgaris (ICA Cerinza variety) as a prey of the predatory mite Phytoseiulus persimilis Athias-Henriot. Two assays were conducted to assess the following variables: the most suitable plant age for mite infestation, and the best time to harvest the mites and re infest the plants. In the first experiment, four, five, six, and seven-week-old plants of P. vulgaris were infested with six T. urticae per foliole. The lower plant stratum exhibited the largest number of mites regardless of plant age. However, four-week old plants had the larger average number of individuals. In the second experiment four-week-old plants were infested with 0.5 female mite/cm{sup 2} of leaf. The number of individuals per instar of T. urticae was recorded weekly. The highest mite production occurred between four and five weeks after infestation, indicating this to be the most suitable for mite harvesting and for plant reinfestation. (author)

  19. Comparative laboratory toxicity of neem pesticides to honey bees (Hymenoptera: Apidae), their mite parasites Varroa jacobsoni (Acari: Varroidae) and Acarapis woodi (Acari: Tarsonemidae), and brood pathogens Paenibacillus larvae and Ascophaera apis.

    Science.gov (United States)

    Melathopoulos, A P; Winston, M L; Whittington, R; Smith, T; Lindberg, C; Mukai, A; Moore, M

    2000-04-01

    Laboratory bioassays were conducted to evaluate neem oil and neem extract for the management of key honey bee (Apis mellifera L.) pests. Neem pesticides inhibited the growth of Paenibacillus larvae (Ash, Priest & Collins) in vitro but had no effect on the growth of Ascophaera apis (Olive & Spiltoir). Azadirachtin-rich extract (neem-aza) was 10 times more potent than crude neem oil (neem oil) against P. larvae suggesting that azadirachtin is a main antibiotic component in neem. Neem-aza, however, was ineffective at controlling the honey bee mite parasites Varroa jacobsoni (Ouduemans) and Acarapis woodi (Rennie). Honey bees also were deterred from feeding on sucrose syrup containing > 0.01 mg/ml of neem-aza. However, neem oil applied topically to infested bees in the laboratory proved highly effective against both mite species. Approximately 50-90% V. jacobsoni mortality was observed 48 h after treatment with associated bee mortality lower than 10%. Although topically applied neem oil did not result in direct A. woodi mortality, it offered significant protection of bees from infestation by A. woodi. Other vegetable and petroleum-based oils also offered selective control of honey bee mites, suggesting neem oil has both a physical and a toxicological mode of action. Although oils are not as selective as the V. jacobsoni acaricide tau-fluvalinate, they nonetheless hold promise for the simultaneous management of several honey bee pests. PMID:10826163

  20. Efeito do manejo de plantas daninhas sobre Neoseiulus californicus (Acari:Phytoseiidae) em pomar de macieira Effect of weed management on Neoseiulus californicus (Acari:Phytoseiidae) in apple orchard

    OpenAIRE

    Lino Bittencourt Monteiro; Luiz Belli; Alexander Souza; André Luiz Werner

    2002-01-01

    Avaliou-se a influência do manejo de plantas daninhas sobre o deslocamento de ácaros tetraniquídeos (Panonychus ulmi e Tetranychus urticae) e do ácaro predador Neoseiulus californicus em um pomar de macieira 'Gala', onde foi implantado o controle biológico do ácaro vermelho, P. ulmi, por meio de liberações massais de N. californicus. As parcelas tiveram as plantas daninhas manejadas de três formas: sem manejo, com roçadas manuais e com herbicidas. As populações de ácaros foram avaliadas sobre...

  1. Toxicidade de natuneem sobre Tetranychus urticae Koch (Acari: Tetranychidae) e ácaros predadores da família Phytoseiidae Toxicity of the natuneem over the Tetranychus urticae Koch (Acari: Tetranychidae) and mites predators from the family Phytoseiidae

    OpenAIRE

    Hilda Maria Brito; Manoel Guedes Corrêa Gondim Junior; José Vargas de Oliveira; Cláudio Augusto Gomes da Câmara

    2006-01-01

    A toxicidade de diferentes concentrações de Natuneem a Tetranychus urticae Koch e a dois ácaros predadores, Euseius alatus De Leon e Phytoseiulus macropilis (Banks), foi estudada. Foi avaliada a toxicidade sobre ovos, e o efeito residual e repelente, sobre adultos. O tratamento dos ovos consistiu na imersão em diluições de Natuneem por cinco segundos, e o efeito residual e repelente sobre adultos consistiu na imersão de discos de folhas de Canavalia ensiformes (L.) DC. também em diluições por...

  2. Toxicidade residual de alguns agrotóxicos recomendado na agricultura sobre Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) Residual toxicity of some pesticides recommended for citrus orchards on the predaceous mite Neoseiulus californicus (McGregor) (Acari: phytoseiidae)

    OpenAIRE

    Marcos Zatti da Silva; Caralos Amadeu Leite de Oliveira

    2007-01-01

    O objetivo do trabalho foi avaliar a toxicidade residual de alguns agrotóxicos utilizados em citros sobre Neoseiulus californicus (McGregor) em condições de laboratório. O método de bioensaio adotado foi o de contato residual. Folhas de citros da variedade Pêra, acondicionadas em arenas, foram pulverizadas em torre de Potter. A toxicidade residual dos produtos foi avaliada duas horas e 1; 3; 5; 7; 10; 14 e 21 dias após a aplicação. Em cada arena, foram transferidas dez fêmeas adultas de N. ca...

  3. Atividade in vitro de permetrina, cipermetrina e deltametrina sobre larvas de Rhipicephalus sanguineus (Latreille, 1806 (Acari, Ixodidae In vitro activity of permethrin, cipermethrin and deltamethrin on larvae of Rhipicephalus sanguineus (Latreille, 1806 (Acari, Ixodidae

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    F.F. Fernandes

    2000-12-01

    Full Text Available Investigaram-se os efeitos toxicológicos in vitro de três piretróides em diferentes concentrações, formulados para uso pecuário, domiciliar e em cães, sobre larvas de R. sanguineus, objetivando monitorar sua suscetibilidade e fomentar seu controle. Utilizaram-se 1.604 larvas em jejum, com 15 a 21 dias, obtidas por infestação artificial em cão, imersas nas soluções testadas, contidas em dispositivos constituídos por placa de Petri descartável, papel filtro e parafina, mantidas em incubadoras do tipo BOD e observadas ao estereoscópio por 24h. Observaram-se excitabilidade, movimentação repetitiva, diminuição da locomoção, desprendimento, paralisia, "knock-down" e proliferação cuticular de gases e líquidos. A mortalidade na 24ª hora foi de 86,9%, 100,0%, 80,3%, 86,0%, 68,2% e 78,0%, respectivamente, para permetrina 1250ppm e 2500ppm, cipermetrina 150ppm e 300ppm, e deltametrina 25ppm e 50ppm. Não houve mortalidade no grupo controle.Aiming at monitoring the susceptibility, increasing the control and evaluating the toxicological effects, of different concentrations of three pyrethroids were investigated in vitro against Rhipicephalus sanguineus larvae using concentrations formulated for cattle, dogs and household use. A total of 1,604 15-21 day-old fasting larvae, obtained by artificial infestation in dogs, was immersed in the solutions. Larvae were then maintained in BOD incubators inside experimental devices, constituted by disposable Petridishes, filter paper and paraffin, and observed on the stereomicroscope during a 24-hour period. The larvae have shown excitability, repetitive movements, decrease of locomotion, detachment, paralysis, knock-down and production of gases and liquid in the cuticle. Mortality after 24 hours was 86.9% (1250ppm and 100.0% (2500ppm for permethrin; 80.3% (150ppm and 86.0% (300ppm for cipermethrin; and for deltamethrin 68.2% (25ppm and 78.0% (50ppm. Mortality was not observed in the control group.

  4. Extratos de plantas no controle de Rhipicephalus (Boophilus microplus (Canestrini, 1887 (Acari: Ixodidae em laboratório Plant extracts in control of Rhipicephalus (Boophilus microplus (Canestrini, 1887 (Acari: Ixodidae in laboratory

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    Sônia Maria Forti Broglio-Micheletti

    2009-12-01

    Full Text Available Extratos vegetais foram estudados com o objetivo de avaliar suas eficiências no controle de Rhipicephalus (Boophilus microplus (Canestrini, 1887 em laboratório. Fêmeas ingurgitadas de carrapato foram coletadas de bovinos e mantidas em placas de Petri. Foram utilizados extratos orgânicos alcoólicos 2% (peso/volume de sementes de Annona muricata L. (Annonaceae (graviola; flores de Syzygium malaccensis (L. (Myrtaceae (jambo; folhas de Cymbopogon citratus (DC. Stapf (Poaceae (capim-santo; folhas de Azadirachta indica A. Juss (Meliaceae (nim; e extrato hexânico na mesma concentração de A. indica (sementes. Os grupos-controle foram compostos por fêmeas sem tratamento e fêmeas tratadas com água destilada e esterilizada e dimetilsulfóxido (DMSO a uma concentração de 1%. O extrato de A. muricata apresentou o maior poder acaricida, com eficácia de 100%, seguido dos extratos de S. malaccensis (75 e 59,24% e A. indica (65 e 38,49%. Houve 100% de redução na eclosão das larvas quando se utilizou o extrato de sementes de A. muricata.Plant extracts were studied to evaluate its efficiency in the control of Rhipicephalus (Boophilus microplus (Canestrini, 1887 in laboratory. Engorged female ticks were collected from the cattle, kept in Petri dishes. Organic alcoholic extracts 2% (weight/volume were used: seeds of Annona muricata L. (Annonaceae (soursop; flowers of Syzygium malaccensis (L. (Myrtaceae (iamb, leaves of Cymbopogon citratus (DC. Stapf (Poaceae (holy grass, leaves of Azadirachta indica A. Juss (Meliaceae (neem and hexane extract 2% (weight/volume of A. indica (seeds. The control groups consisted of untreated females and females treated with distilled water and sterile and dimethylsulfoxide (DMSO a concentration of 1%. The extract of A. muricata (seed had the highest mortality with acaricide activity and 100% efficacy followed by extracts of S. malaccensis (75 and 59.24% and A. indica (65 and 38.49%. The seed extract of A. muricata reduced 100% larvae hatch.

  5. Ocorrência de Ixodes loricatus Neumann, 1899 (Acari: Ixodidae) parasitando Didelphis albiventris (Lund, 1841), (Didelphimorphia: Didelphidae), em Campo Grande, MS Occurrence of Ixodes loricatus Neumann, 1899 (Acari: Ixodidae) parasitizing Didelphis albiventris (Lund, 1841) (Didelphimorphia: Didelphidae) in Campo Grande , MS

    OpenAIRE

    Soraya R. Miziara; Fernando Paiva; Renato Andreotti; Wilson W. Koller; Vinicius A. Lopes; Nara T. Pontes; Klaudia Bitencourt

    2008-01-01

    Este é primeiro relato da ocorrência de Ixodes no Estado do Mato Grosso do Sul e primeiro caso identificado de Ixodes loricatus Neumann, 1899, parasitando Didelphis albiventris no município de Campo Grande, MS, Brasil.This is first report of occurence of Ixodes in the State of Mato Grosso do Sul and first description of Ixodes loricatus Neumann, 1899, parasitizing Didelphis albiventris in Campo Grande, MS, Brazil.

  6. Ácaros (Arachnida, Acari) da seringueira (Hevea brasiliensis Muell. Arg.) no Estado do Mato Grosso, Brasil Mites (Arachnida, Acari) on rubber tree (Hevea brasiliensis Muell. Arg.) in the State of Mato Grosso, Brazil

    OpenAIRE

    Noeli Juarez Ferla; Gilberto José de Moraes

    2002-01-01

    Mites started to be considered economically important on rubber tree since the early 1990's, when they were considered responsible for damages caused to this crop and by the consequent yield reduction. The aim of this work was to determine the mites present on this crop in the State of Mato Grosso and to elaborate a key for the separation of the species found. This study was conducted in fields of Plantacoes Edouard Michelin Ltda., in Itiquira, and Triângulo Agro-Industrial S/A. in Pontes e L...

  7. Flutuação populacional e sintomas de dano por ácaros (Acari) em seringueira no Estado do Mato Grosso, Brasil Population fluctuation and mite (Acari) damage symptoms in rubber trees in the State of Mato Grosso, Brazil

    OpenAIRE

    Noeli Juarez Ferla; Gilberto José de Moraes

    2008-01-01

    Apesar da grande importância da cultura da seringueira (Hevea brasiliensis Muell. Arg.) para o Brasil, pouco se conhece sobre a flutuação populacional dos ácaros nessa cultura. O objetivo deste trabalho foi estudar a flutuação populacional de ácaros na seringueira no Estado do Mato Grosso, bem como observar a evolução dos sintomas de ataque de tais pragas nessa planta. O estudo foi conduzido em campos de seringueira de Itiquira e Pontes e Lacerda, Estado do Mato Grosso, com seis clones: FX 38...

  8. Flutuação populacional e sintomas de dano por ácaros (Acari em seringueira no Estado do Mato Grosso, Brasil Population fluctuation and mite (Acari damage symptoms in rubber trees in the State of Mato Grosso, Brazil

    Directory of Open Access Journals (Sweden)

    Noeli Juarez Ferla

    2008-04-01

    Full Text Available Apesar da grande importância da cultura da seringueira (Hevea brasiliensis Muell. Arg. para o Brasil, pouco se conhece sobre a flutuação populacional dos ácaros nessa cultura. O objetivo deste trabalho foi estudar a flutuação populacional de ácaros na seringueira no Estado do Mato Grosso, bem como observar a evolução dos sintomas de ataque de tais pragas nessa planta. O estudo foi conduzido em campos de seringueira de Itiquira e Pontes e Lacerda, Estado do Mato Grosso, com seis clones: FX 3864, RRIM 600, IAN 873, IAN 713, PB 260 e PR 255, cujas coletas foram realizadas de agosto de 1998 a julho de 2000. Na safra de 1998/1999, a amostragem foi de 150 folhas de cada um dos estratos basal, mediano e apical, em 10 plantas ao acaso. A metodologia de coleta na safra de 1999/2000 foi alterada devido aos resultados da parcial anterior de cinco folhas do estrato mediano de cada uma das 15 plantas ao acaso. Calacarus heveae Feres foi a espécie mais freqüente em Itiquira e Phyllocoptruta serigueirae Feres em Pontes e Lacerda. A queda prematura das folhas foi observada apenas em Itiquira.Despite the importance of rubber trees (Hevea brasiliensis Muell. Arg. to Brazil, little is known about mite population fluctuation on this crop. The aim of this work was to study the fluctuation of the mite population on rubber trees in the state of Mato Grosso and to observe the evolution of the symptoms caused by their attack. This study was conducted in rubber tree fields at Itiquira and Pontes e Lacerda in the state of Mato Grosso with six clones: FX 3864, RRIM 600, IAN 873, IAN 713, PB 260 and PR 255. Samplings were conducted between August 1998 and July 2000. The 1998/1999 samples consisted of 150 leaves of each of the basal, median and apical strata of 10 plants, randomly taken. The 1999/2000 sampling methodology was changed due the results for the previous partial for five leaves of the median stratum of each of 15 plants randomly taken. Calacarus heveae Feres was the most frequent species in Itiquira and Phyllocoptruta serigueirae Feres in Pontes e Lacerda. Early leaf drop was observed only in Itiquira

  9. Musique, esthétique et société

    OpenAIRE

    Nattiez, Jean-Jacques

    2007-01-01

    C’est un livre à la fois beau, riche et sensible que, à propos des chants religieux d’une communauté sarde, celle de Castelsardo, nous a offert Bernard Lortat-Jacob : Chants de Passion est le fruit de la passion d’un ethnomusicologue et de quinze années de fréquentation assidue d’un répertoire musical et de ses acteurs. À propos de : Bernard Lortat-Jacob, Chants de Passion (Au cœur d’une confrérie de Sardaigne). Photographies de Bachisio Masia. Dessins originaux de Nino Sanna. Paris, Éditions...

  10. Caamembecaia gratiosus n. gen., n. sp. (Acari: Trombiculidae), from Trinomys gratiosus (Gunter) (Rodentia: Echimydae), of Atlantic Forest in Southeastern Brazil

    OpenAIRE

    Gilberto S Gazêta; Marinete Amorim; David EP Bossi; Arício X Linhares; Nicolau M Serra-Freire

    2006-01-01

    From June 1999 to May 2001, small mammals were captured in three areas of the Atlantic Forest in Southeastern Brazil and examined for ectoparasites. Analysis of ectoparasites revealed the presence of a new chigger genus and species, Caamembecaia gratiosus, from Trinomys gratiosus. This is the first record of a chigger from T. gratiosus.

  11. Microhabitat-independent regional differences in survival of unfed Ixodes scapularis nymphs (Acari:Ixodidae) in Connecticut.

    Science.gov (United States)

    Bertrand, M R; Wilson, M L

    1997-03-01

    The effects of habitat and microclimate on survival of unfed nymphal black-legged ticks, Ixodes scapularis Say (approximately I. damnini Spielman, Clifford, Piesman & Corwin), were studied under natural conditions in southcentral and northwestern Connecticut. At both coastal and inland locations, survival of 3 groups of 20 wild-caught questing nymphs placed in nylon mesh bags was monitored in each of 3 different habitats (field, forest canopy, and forest/field edge) during summer 1995. Simultaneously, soil temperature, ground-level air temperature, and relative humidity were measured continuously within each habitat at both sites. The number of ticks surviving in each habitat was monitored weekly. Average daily survival rates of nymphs were related inversely to soil temperature but were not related to air temperature or humidity. Overall, nymphal ticks at the inland site survived significantly longer than those at the coastal site; however, no significant differences in mortality rates were found among habitats. These results suggest that inland environmental conditions are suitable for lengthy survival of unfed nymphal I. scapularis in regions where this tick is not yet abundant. PMID:9103759

  12. RT-PCR DETECTION OF CITRUS LEPROSIS VIRUS IN SHRUBS AND WEED PLANTS INFECTED THROUGH Brevipalpus phoenicis (ACARI: TENUIPALPIDAE)

    Science.gov (United States)

    No Brasil são gastos anualmente cerca de US$ 80 milhões para controle de Brevipalpus phoenicis, vetor do vírus leprose dos citros (CiLV). Este ácaro possui comportamento polífago e cosmopolita, presente em inúmeras espécies de plantas junto aos pomares cítricos. Neste trabalho foi investigada a poss...

  13. Repellency to ticks (Acari: Ixodidae) of extracts of Nigella sativa (Ranunculaceae) and the anti-inflammatory DogsBestFriend™.

    Science.gov (United States)

    Carroll, J F; Babish, J G; Pacioretty, L M; Kramer, M

    2016-09-01

    Motivated by observations that the canine anti-inflammatory cream DogsBestFriend™ (DBF) appeared to deter flies, mosquitoes, and ticks from treated animals, repellent efficacy bioassays using four species of ticks were conducted with three extracts of Nigella sativa L. (Ranunculaceae), a constituent of DBF. The DBF cream was tested against nymphs of lone star tick, Amblyomma americanum (L.). In vertical filter paper assays, the three extracts applied at 0.413 mg extract/cm(2) filter paper repelled 96.7-100 % of brown dog tick, Rhipicephalus sanguineus (Latreille) nymphs, whereas, at the same rate, only one extract repelled >90 % A. americanum nymphs. Adult (mixed sexes) American dog ticks, Dermacentor variabilis (Say), required a higher concentration to be repelled effectively; two extracts, applied at 0.827 mg extract/cm(2) filter paper, repelled ≥90 % of the D. variabilis. In contrast, all extracts applied at much lower concentration (0.206 mg extract/cm(2) filter paper) repelled 100 % adult blacklegged ticks, Ixodes scapularis Say (only females tested). Of the two more repellent extracts, one lost most of its activity against A. americanum nymphs in repelled 66.7 % of the nymphs at 192 h after application. At 0.206 mg extract/cm(2) filter paper, one extract was as repellent as deet against A. americanum nymphs. In a vertical bioassay in which nylon organdy was substituted for filter paper, DBF, at the rates of 1.67 and 0.835 mg cream/cm(2), repelled 76.7 and 30.0 % A. americanum nymphs, respectively. These findings indicate that when applied appropriately DBF should afford some protection to canines against tick bites. PMID:27394440

  14. Genetic similarity among Agistemus pallinii Matioli et al (Acari: Stigmaeidae) found in citrus orchards in Vicosa, Minas Gerais state, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Matioli, Andre L. [Instituto Biologico, Campinas, SP (Brazil). Lab. de Entomologia Economica], e-mail: almatioli@biologico.sp.gov.br; Pallini, Angelo [Universidade Federal de Vicosa (UFV), MG (Brazil). Dept. de Biologia Animal], e-mail: pallini@ufv.br; Tavares, Mara G. [Universidade Federal de Vicosa (UFV), MG (Brazil). Dept. de Biologia Geral], e-mail: mtavares@ufv.br

    2009-03-15

    Stigmaeidae are very important predators of mite and insect pests on several crops in Brazil. It is considered the second most important family of predatory mites in citrus orchards in Brazil. However, their identification, especially that of the members of the genus Agistemus, is rather difficult based only on morphology. Hence, this study describes the use of random amplified polymorphic DNA (RAPD-PCR) markers to determine the genetic similarity of an Agistemus pallinii Matioli et al population found in 2004 in a citrus orchard in Vicosa, Minas Gerais State, Brazil, preying on Panonychus citri (McGregor). Amplifications were performed with 12 random primers (OPAA8, OPAA19, OPAB1, OPAB5, OPAB18, OPAC9, OPAC17, OPAC19, OPAD10, OPAE9, OPAE12 and OPAE17), which generated 119 bands, with 53.8% polymorphism. The coefficients of genetic similarity among the individuals ranged from 0.68 to 0.99, indicating a high genetic similarity among them. The 3D projection analysis clustered the majority of individuals confirming their high similarity. Though individuals of A. pallinii are minute ({+-} 360 {mu}m long), the PCR-RAPD technique can still be used for their identification, complementing morphological analyses or for comparison of populations collected in different geographic regions. This is the fi rst molecular study carried out with stigmaeid mites. (author)

  15. Purification and partial characterization of glutathione S-transferases from three field populations of Panonychus citri (Acari: Tetranychidae).

    Science.gov (United States)

    Niu, Jin-Zhi; Dou, Wei; Wang, Bao-Jun; Zhang, Guo-Na; Zhang, Rui; Yin, Yi; Wang, Jin-Jun

    2012-02-01

    Glutathione S-transferases (GSTs) play central roles in phase II detoxification of both xenobiotics (drugs, insecticides, and herbicides) and endogenous compounds in almost all living organisms. In this study, we successfully purified the GSTs from the citrus red mite, Panonychus citri, by affinity chromatography on Glutathione Sepharose 4B and compared the biochemical characterizations of the purified GSTs from three field populations [beibei (BB), wanzhou (WZ), and zhongxian (ZX)]. SDS-PAGE revealed that the molecular weight of GSTs from three populations consisted of two subunits of 27.3 and 26.1 kDa. The specific activity of the purified GSTs from the WZ and ZX populations was increased 1.5- and 3.8-fold, respectively, compared with the BB population. Accordingly, the pyridaben susceptibility of WZ and ZX populations was less compared with BB population. Kinetic analyses showed that the WZ and ZX populations had higher substrate specificity compared with the BB population based on the values of k (cat) and k (cat) /K (m) to both reduced glutathione (GSH) and 1-chloro-2,4-dinitrobenzene (CDNB). The in vitro inhibition studies of GSTs indicated that the I (50) values of pyridaben from WZ and ZX populations of P. citri expressed 1.6- and 4.4-fold decreases, respectively, compared to the I (50) value of pyridaben from the BB population. In conclusion, all evidence suggested that the purified GSTs may partially contribute to the susceptibility of acaricide pyridaben in field populations of P. citri. PMID:21979304

  16. Genetic similarity among Agistemus pallinii Matioli et al (Acari: Stigmaeidae) found in citrus orchards in Vicosa, Minas Gerais state, Brazil

    International Nuclear Information System (INIS)

    Stigmaeidae are very important predators of mite and insect pests on several crops in Brazil. It is considered the second most important family of predatory mites in citrus orchards in Brazil. However, their identification, especially that of the members of the genus Agistemus, is rather difficult based only on morphology. Hence, this study describes the use of random amplified polymorphic DNA (RAPD-PCR) markers to determine the genetic similarity of an Agistemus pallinii Matioli et al population found in 2004 in a citrus orchard in Vicosa, Minas Gerais State, Brazil, preying on Panonychus citri (McGregor). Amplifications were performed with 12 random primers (OPAA8, OPAA19, OPAB1, OPAB5, OPAB18, OPAC9, OPAC17, OPAC19, OPAD10, OPAE9, OPAE12 and OPAE17), which generated 119 bands, with 53.8% polymorphism. The coefficients of genetic similarity among the individuals ranged from 0.68 to 0.99, indicating a high genetic similarity among them. The 3D projection analysis clustered the majority of individuals confirming their high similarity. Though individuals of A. pallinii are minute (± 360 μm long), the PCR-RAPD technique can still be used for their identification, complementing morphological analyses or for comparison of populations collected in different geographic regions. This is the fi rst molecular study carried out with stigmaeid mites. (author)

  17. 60Co-γ Irradiation Affects the Enzymatic Antioxidant System of the Citrus Red Mite Panonychus citri (Acari: Tetranychidae)

    OpenAIRE

    Ke Zhang; Zhibin Li; Shaowen Zhu; Qunfang Weng

    2014-01-01

    Radio-(60Co), which emits γ rays, has been used worldwide in pest control. The aim of the present study was to analyze the effect of effective-low-power 60Co-γ irradiation on the enzymatic antioxidant system of the citrus red mite Panonychus citri. One day old female adults were exposed to 0.4 kGy 60Co-γ irradiation and on the, 6th h, 1st day, 2nd day, and 5th day post treatment, the mites were euthanized for biochemical analysis. The activity of superoxide dismutase (SOD), catalase (CAT), p...

  18. Antioxidant responses of citrus red mite, Panonychus citri (McGregor) (Acari: Tetranychidae), exposed to thermal stress.

    Science.gov (United States)

    Yang, Li-Hong; Huang, Hai; Wang, Jin-Jun

    2010-12-01

    Relatively low or high temperatures are responsible for a variety of physiological stress responses in insects and mites. Induced thermal stress was recently associated with increased reactive oxygen species (ROS) generation, which caused oxidative damage. In this study, we examined the time-related effect of the relatively low (0, 5, 10, and 15 °C) or high (32, 35, 38, and 41 °C) temperatures on the activities of antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT), peroxidases (POX), and glutathione-S-transferase (GST), and the total antioxidant capacity (TEAC) of the citrus red mite, Panonychus citri (McGregor). The malondialdehyde (MDA) concentration, as a marker of lipid peroxidation in organisms, was also measured in the citrus red mite under thermal stress conditions. Results showed that SOD and GST activities were significantly increased and play an important role in the process of antioxidant response to thermal stress. Lipid peroxidation levels increased significantly (P<0.001) and changed in a time-dependent manner. CAT and POX activity, as well as TEAC, did not vary significantly and play a minor role to remove the ROS generation. These results suggest that thermal stress leads to oxidative stress and antioxidant enzymes play an important role in reducing oxidative damage in the citrus red mite. PMID:20709071

  19. (60)Co-γ irradiation affects the enzymatic antioxidant system of the citrus red mite Panonychus citri (Acari: Tetranychidae).

    Science.gov (United States)

    Zhang, Ke; Li, Zhibin; Zhu, Shaowen; Weng, Qunfang

    2014-01-01

    Radio-(60Co), which emits γ rays, has been used worldwide in pest control. The aim of the present study was to analyze the effect of effective-low-power 60Co-γ irradiation on the enzymatic antioxidant system of the citrus red mite Panonychus citri. One day old female adults were exposed to 0.4 kGy 60Co-γ irradiation and on the, 6th h, 1st day, 2nd day, and 5th day post treatment, the mites were euthanized for biochemical analysis. The activity of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), phenoloxidase (PO) and acetylocholinesterase (AchE) were investigated. POD and CAT activities, as well as SOD were higher in the irradiated mites. We found that exposure to 60Co-γ radiation resulted in increased activities of SOD, CAT, POD and decreased AchE activity. When the recovery time lasted till the 5th day, the activities of POD and PO were significantly lower than the control, whereas the SOD, CAT and AchE activities returned to control levels. Cells possess protein repair pathways to rescue oxidized proteins and restore their functions, but if these repair processes fail, oxidized proteins may become cytotoxic. Our results confirm the hypothesis that low dosages of 60Co-γ irradiation increase the level of oxidative stress in P. citri adults in a short time, causing meanwhile damage and sterility. The results of this study also indicate that stress caused by exposure to irradiation could inhibit the cholinergic system in P. citri. PMID:24853454

  20. Analysis of transcriptome differences between resistant and susceptible strains of the citrus red mite Panonychus citri (Acari: Tetranychidae.

    Directory of Open Access Journals (Sweden)

    Bin Liu

    Full Text Available BACKGROUND: The citrus red mite is a worldwide citrus pest and a common sensitizing allergen of asthma and rhinitis. It has developed strong resistance to many registered acaricides, However, the molecular mechanisms of resistance remain unknown. we therefore used next generation sequencing technology to investigate the global transcriptomes between resistant strains and susceptible strains. RESULTS: We obtained 34,159, 30,466 and 32,217 unigenes by assembling the SS reads, RS reads and SS&RS reads respectively. There are total 17,581 annotated unigenes from SS&RS reads by BLAST searching databases of nr, the Clusters of Orthologous Groups (COGs and Kyoto Encyclopedia of Genes and Genomes (KEGG with an E-value ≤ 1e-5, in which 7,075 unigenes were annotated in the COG database, 12, 712 unigenes were found in the KEGG database and 3,812 unigenes were assigned to Gene ontology (GO. Moreover, 2,701 unigenes were judged to be the differentially expressed genes (DEGs based on the uniquely mapped reads. There are 219 pathways in all annotated unigenes and 198 pathways in DEGs that mapped to the KEGG database. We identified 211 metabolism genes and target genes related to general insecticide resistance such as P450 and Cytochrome b, and further compared their differences between RS and SS. Meanwhile, we identified 105 and 194 genes related to growth and reproduction, respectively, based on the mode of action of Hexythiazox. After further analyses, we found variation in sequences but not in gene expression related to mite growth and reproduction between different strains. CONCLUSION: To our knowledge, this is the first comparative transcriptome study to discover candidate genes involved in phytophagous mite resistance. This study identified differential unigenes related to general pesticide resistance and organism growth and reproduction in P. citri. The assembled, annotated transcriptomes provide a valuable genomic resource for further understanding the molecular basis of resistance mechanisms.