WorldWideScience

Sample records for amblyseius largoensis muma

  1. Evidence of Amblyseius largoensis and Euseius alatus as biological control agent of Aceria guerreronis.

    Science.gov (United States)

    Melo, J W S; Lima, D B; Staudacher, H; Silva, F R; Gondim, M G C; Sabelis, M W

    2015-11-01

    Amblyseius largoensis (Muma) (Acari: Phytoseiidae) and Euseius alatus De Leon (Acari: Phytoseiidae) are predatory mites that are mostly found on leaves and on the exposed fruit surface of coconut plants. Their morphology hampers the access to the microhabitat occupied by Aceria guerreronis Keifer (Acari: Eriophyidae), the most important pest of coconut fruits throughout the world. However, it was suggested that they can prey on A. guerreronis under natural conditions when this pest leaves its refuge to disperse. Since the trophic interactions between A. largoensis or E. alatus and A. guerreronis are unknown, we compare the frequencies of occurrence of A. largoensis and E. alatus under the bracts of coconut fruits and on coconut leaflets. In addition, because phytoseiids feed by liquid ingestion, we used molecular analysis to confirm the potential role of A. largoensis or E. alatus as predators of A. guerreronis and to assess how fast the A. guerreronis DNA fragment is degradated in the A. largoensis digestive tract. Our study demonstrated that E. alatus was only present on coconut leaflets whereas A. largoensis was found mostly on leaflets and, to a much lesser extent, under the bracts of coconuts. Species-specific ITS primers designed for A. guerreronis were shown to have a high degree of specificity for A. guerreronis DNA and did not produce any PCR product from DNA templates of the other insects and mites associated with the coconut agroecosystem. Based on molecular analysis, we confirmed that the predatory mites, A. largoensis and E. alatus, had preyed on the coconut mite in the field. Overall the predatory mites collected in the field exhibited low levels of predation (26.7% of A. largoensis and 8.9% of E. alatus tested positive for A. guerreronis DNA). The fragment of A. guerreronis DNA remained intact for a very short time (no more than 6 h after feeding) in the digestive tract of A. largoensis.

  2. Species of the genus Amblyseius Berlese, 1914, from Tamatave, East Madagascar (Acarina: Phytoseiidae)

    NARCIS (Netherlands)

    Blommers, Leo

    1974-01-01

    Seven new species of the genus Amblyseius are described: Amblyseius (Proprioseiopsis) parasundi, A. (A.) tamatavensis, A. (A.) passiflorae, A. (A.) reptans, A. (A.) ivoloinae, A. (A.) ovaloides, A. (A.) aequidens. All species were collected on fruit trees except A. passiflorae. A. parasundi is a

  3. Uzņēmuma SIA "Spilva" finanšu analīze

    OpenAIRE

    Miloša, Margarita

    2013-01-01

    Bakalaura darba nosaukums ir „Uzņēmuma SIA SPILVA finanšu analīze”. Darba mērķis ir izpētīt finanšu analīzes teorētiskos aspektus, kā arī novērtēt uzņēmuma finansiālo stāvokli, un veikt secinājumus un priekšlikumus uzņēmuma finanšu stāvokļa uzlabošanai.Dаrbа tеоrētiskаjā dаļā арlūkоti finаnšu аnаlīzеs tеоrētiskiе аsреkti, tika noteikts finanšu analīzes jēdziens, aplūkojot Latvijas un ārvalstu zinātnieku pētījumus. Рrаktiskаjā dаļā аutоrе vеiса vispusīgu SIA SPILVA finanšu аnаlīzi laika pos...

  4. Effect of foliar application of pyrifluquinazon on Bemisia tabaci (MED whitefly) and Amblyseius swirskii, 2016

    Science.gov (United States)

    With the overall goal to integrate the predatory mite Amblyseius swirskii in the management program of MED whitefly, the specific objective of this study was to evaluate pyrifluquinazon, a pyridine insecticide for whitefly control, and assess its compatibility with swirskii mite, and assess its comp...

  5. Mazā uzņēmuma IT infrastruktūras veidošana

    OpenAIRE

    Ņikiforova, Anastasija

    2015-01-01

    Kvalifikācijas darbā "Mazā uzņēmuma IT infrastruktūras veidošana" ir dokumentēta tīkla veidošana mazajam uzņēmumam pēc uzņēmuma vadības prasībām. Tika izmantots uzņēmuma serveris, kurš bija jāizpēta, lai noskaidrotu, kas ir nepieciešams uzlabot, lai tas varētu produktīvi un efektīvi strādāt, pildot visus uzdevumus. Tika izvēlēts virtualizācijas risinājums, lai uz viena fiziskā servera vienlaikus darbinātu vairākas virtuālās sistēmas, starp tām sadalot pieejamos resursus, kā arī, lai admin...

  6. Projekts: Uzņēmuma "FREI" dibināšana

    OpenAIRE

    Freibergs, Oskars

    2016-01-01

    Projekta ideja ir izveidot sabiedrību ar ierobežotu atbildību „FREI”, kas ražos ogu sīrupus un bezalkoholiskos vīnus. Uzņēmuma darbības mērķis ir piedāvāt klientiem augstvērtīgus ogu sīrupus, kas pagatavoti no Latvijā audzētām ogām, kā arī,izmantojot jaunākās ražošanas tehnoloģijas - bezalkoholiskos vīnus, kas gan pēc garšas, gan smaržas būs līdzīgi alkoholiskajiem vīniem. Sākotnēji plānots iekarot Latvijas tirgu ar esošajiem produktiem, taču nākotnē ir plānots paplašināt klāstu ar produktiem...

  7. Sublethal effects of pyrethroid and neonicotinoid insecticides on Iphiseiodes zuluagai Denmark and Muma (Mesostigmata: Phytoseiidae).

    Science.gov (United States)

    Zanuzo Zanardi, Odimar; Pavan Bordini, Gabriela; Aparecida Franco, Aline; Jacob, Cynthia Renata Oliveira; Takao Yamamoto, Pedro

    2017-11-01

    The predator mite Iphiseiodes zuluagai Denmark & Muma is an important biological-control agent of mite pests, and it is one of the most common species found in citrus orchards. This study assessed, under laboratory conditions, the toxicity and duration of the harmful effects of five insecticides, the three pyrethroids deltamethrin, esfenvalerate and lambda-cyhalothrin, and the two neonicotinoids imidacloprid and thiamethoxam on I. zuluagai. Furthermore, we estimated the life-table parameters of the predator. Our results showed that deltamethrin and lambda-cyhalothrin caused higher mortality of larvae and adults than imidacloprid and thiamethoxam. In contrast, esfenvalerate provided larval mortality similar to imidacloprid and thiamethoxam, but it did not cause significant adult mortality of the predator. Mites that developed on pyrethroid residues showed lower survival of the immature stages, fecundity, and longevity compared to neonicotinoid residues and the control treatment. The estimated life-table parameters indicated that deltamethrin, lambda-cyhalothrin and esfenvalerate caused greater reduction in R o and r of I. zuluagai compared with imidacloprid and thiamethoxam, which were similar to the control treatment. Besides the impacts on biological and population parameters, the duration of the harmful activity of pyrethroid insecticides was longer than the neonicotinoids. Therefore, the use of pyrethroid insecticides to control pest insects may involve serious implications for integrated pest-management programs that aim to exploit the biological control by I. zuluagai in citrus orchards.

  8. Domácias do cafeeiro beneficiam o ácaro predador Iphiseiodes zuluagai Denmark & Muma (Acari: Phytoseiidae)?

    OpenAIRE

    Matos, Cláudia H.C.; Pallini, Angelo; Chaves, Fredson F.; Galbiati, Carla

    2004-01-01

    Os cafeeiros apresentam domácias em suas folhas que abrigam ácaros, inclusive ácaros predadores que podem também fazer uso dessas estruturas. Neste estudo foi avaliado o efeito das domácias sobre o predador Iphiseiodes zuluagai Denmark & Muma, através da manipulação dessas estruturas em folhas de Coffea arabica L. var. Catuaí. Os testes foram realizados em arenas constituídas por folhas de cafeeiro com a face abaxial voltada para cima. Foi avaliada a sobrevivência de I. zuluagai em folhas com...

  9. Perspectives for mass rearing of Iphiseiodes zuluagai Denmark and Muma (Acari: Phytoseiidae)

    International Nuclear Information System (INIS)

    Albuquerque, Fabio A. de

    2008-01-01

    Iphiseiodes zuluagai Denmark and Muma is an important predator of Brevipalpus phoenicis (Geijskes) on citrus in Brazil. The suitability of Tyrophagus putrescentiae (Schrank) as a food source of I. zuluagai in laboratory rearing was investigated at 25.5 ± 0.5 deg C, 88 ± 7% RU and photophase of 12h. Initially, levels of oviposition of the predator fed on eggs were evaluated, as well as the dead or live post-embryonic stages of T. putrescentiae, in a period of 10 days. The daily oviposition rate was 1.3 egg per female when they were fed on eggs on T. putrescentiae, 0.7 egg per female when they were fed on dead post embryonic stages and about 0.3 egg per female when they were fed on live post-embryonic stages. Later, the life table of I. zuluagai was constructed, when eggs of T. putrescentiae were offered to the predators as prey. The immature stages were observed every 8 h, to determine the corresponding durations. In the adult phase, the mites were observed every 24 h, to determine the reproductive parameters. The intrinsic rate of natural increase (r m ) was 0.11 female/ female/day; resulting in a fi nite rate of increase of 1.11 (λ). The net reproductive rate (R 0 ) was 7.1 females/generation, with a mean generation time (T) 18.6 days. The results show that T. putrescentiae is a favorable food source for the development of I. zuluagai. (author)

  10. Prey preference of the predatory mite, Amblyseius swirskii between first instar western flower thrips Frankliniella occidentalis and nymphs of the twospotted spider mite Tetranychus urticae.

    Science.gov (United States)

    Xu, Xuenong; Enkegaard, Annie

    2010-01-01

    The prey preference of polyphagous predators plays an important role in suppressing different species of pest insects. In this study the prey preference of the predatory mite, Amblyseius swirskii (Athias-Henriot) (Acari: Phytoseiidae) was examined between nymphs of the twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) and first instar larvae of the western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), as well as between active and chrysalis spider mite protonymphs and active and chrysalis spider mite deutonymphs. The study was done in the laboratory on bean leaf discs at 25 ± 1° C and 70 ± 5% RH. Amblyseius swirskii had a clear preference for thrips compared to both spider mite protonymphs and deutonymphs. About twice as many thrips as spider mites were consumed. Amblyseius swirskii did not show a preference between active and chrysalis stages of spider mites.

  11. Pašvaldības uzņēmuma "Rīgas Satiksme" komunikācija sociālajos medijos

    OpenAIRE

    Rika, Katrīna

    2014-01-01

    Bakalaura darba nosaukums ir „Pašvaldības uzņēmuma Rīgas Satiksme komunikācija sociālajos medijos”. Pētījuma galvenais mērķis ir noskaidrot, atbilstoši kādam Dž. Gruniga komunikācijas modelim tiek veidota Rīgas Satiksmes komunikācija sociālajos medijos. Teorētiskais pamatojumu veido nodaļas par sociālajiem medijiem un to veidiem, sabiedriskajām attiecībām un Dž. Gruniga komunikācijas modeļiem. Empīriskajā daļa tiek veikta kvalitatīvā kontentanalīze, kur tiek veikta uzņēmuma satura...

  12. Franšīzes uzņēmuma dibināšanas iespējas starptautiskā tirgū.

    OpenAIRE

    Maklere, Madara

    2014-01-01

    Bakalaura darba autore: Madara Makere. Bakalaura darba tēma: „Franšīzes uzņēmuma dibināšanas iespējas starptautiskā tirgū”. Darbs sastāv no trim nodaļām. Pirmajā nodaļā tiek aprakstīta teorija par franšīzi un tās veidiem. Otrajā daļā tiek apskatīta informācija par franšīzi vairāk no praktiskā viedokļa, precīzāk, Latvijā esošā franšīzes uzņēmuma apskate un piesaistes uzņēmuma informācija. Trešajā daļā tiek apskatīts franšīzes dibināšanas pamats un ar to saistošā informācija. Bakalaura...

  13. Kokapstrādes uzņēmuma "F" saimnieciskās darbības analīze

    OpenAIRE

    Djubina, Vlada

    2014-01-01

    Maģistra darba nosaukums ir „Kokapstrādes uzņēmuma „F” saimnieciskās darbības analīze”. Tā mērķis ir, pamatojoties uz teorētisko un praktisko materiālu, veikt SIA „F” saimnieciskās darbības analīzi, atklāt iespējamās nepilnības un problēmas uzņēmuma saimnieciskajā darbībā, izdarīt secinājumus un izstrādāt priekšlikumus finanšu stāvokļa uzlabošanai un uzņēmuma turpmākās attīstības iespējām. Darbs sastāv no ievada un četrām nodaļām. Pirmajai nodaļai ir teorētisks raksturs. Otrā nodaļa fokus...

  14. Vitamin A deficiency modifies response of predatory mite Amblyseius potentillae to volatile kairomone of two-spotted spider mite, Tetranychus urticae.

    NARCIS (Netherlands)

    Dicke, M.; Sabelis, M.W.; Groeneveld, A.

    1986-01-01

    volatile kairomone of the two-spotted spider mite,Tetranychus urticae, elicits a searching response of the phytoseiid predatorAmblyseius potentillae, only when the predator is reared on a carotenoid-free diet. However, after addition of crystalline betta-carotene or vitamin A acetate to the

  15. Geographic distribution and host plants of Raoiella indica and associated mite species in northern Venezuela.

    Science.gov (United States)

    Vásquez, Carlos; de Moraes, Gilberto J

    2013-05-01

    The red palm mite (RPM), Raoiella indica Hirst (Acari: Tenuipalpidae), is an invasive pest in the New World, where it is currently considered a serious threat to coconut and banana crops. It was first reported from northern Venezuela in 2007. To determine its current distribution in this country, surveys were carried out from October 2008 to April 2010 on coconut (Cocos nucifera L.), banana (Musa spp.), ornamental plants and weeds in northern Venezuela. Higher population levels of RPM were registered on commercial coconut farms in Falcón and Sucre states but also on other plant species naturally growing along the coastal line in Anzoategui, Aragua, Carabobo, Monagas and Nueva Esparta states. Out of 34 botanical species evaluated, all RPM stages were observed only on eight arecaceous, one musaceous and one streliziaceous species, indicating that the pest developed and reproduced only on these plants. Mite specimens found on weeds were considered spurious events, as immature stages of the pest were never found on these. Amblyseius largoensis (Muma) (Acari: Phytoseiidae) was the most frequent predatory mite associated with RPM in all sampling sites. The results indicate that RPM has spread to extensive areas of northern Venezuela since its initial detection in Güiria, Sucre state. Considering the report of this pest mite in northern Brazil in the late 2009, additional samplings in southern Venezuela should be carried out, to evaluate the possible presence of RPM also in that region.

  16. 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.

  17. Uzņēmuma "Mercury Group" klientu un sadarbības partneru uzskaites datu bāzes projekts

    OpenAIRE

    Beločicka, Karīna

    2013-01-01

    Uzņēmuma „Mercury Group”, kura galvenā darbības sfēra ir kravu pārvadājumi un kravu ekspedīcija, veiksmīgu darbību Latvijā un Eiropā ir nodrošinājusi tieši klientu lojalitāte un partneru uzticamība. Uzņēmuma koncepcija balstās uz kvalitatīvu pakalpojumu sniegšanu klientiem, izmantojot, ar laiku izveidojušās, ciešas partnerattiecības ar pārvadātāju kompānijām. Laika gaitā, paplašinoties klientu lokam, sāk parādīties vajadzība pēc jaunākām tehnoloģijām. Klientu apkalpošanas servisā, saistībā ar...

  18. Zīmola nozīme patērētāju lēmuma pieņemšanā mēbeļu mazumtirdzniecībā.

    OpenAIRE

    Pētersons, Miks

    2013-01-01

    Maģistra darba temats ir „Zīmola nozīme patērētāju lēmuma pieņemšanā mēbeļu mazumtirdzniecībā”. Darba mērķis ir teorētiski analizēt un praktiski noskaidrot zīmola nozīmi patērētāja lēmuma pieņemšanā par mēbeļu iegādi. Temats ir aktuāls un darbā apkopotie rezultāti var būt saistoši Latvijas mēbeļu nozares dalībniekiem. 1. nodaļā autors izvērtē patērētāju uzvedību noteicošos faktorus, kā arī zīmola nozīme lēmuma pieņemšanā. 2. nodaļā analizēta mēbeļu ražošanas nozare Latvijā, veikta uzņēm...

  19. Finanšu pārskati un to uzņēmuma darbības vērtēšana

    OpenAIRE

    Rumba, Santa

    2008-01-01

    Darba temats: „Finanšu pārskati un to nozīme uzņēmuma darbības vērtēšanā”. Darba mērķis ir izpētīt un analizēt finanšu pārskatu sastādīšanas normatīvo bāzi, inventarizāciju kā finanšu pārskata pamatu, finanšu pārskata sastādīšanu, finanšu pārskata sastāvdaļas un finanšu pārskatu analīzes metodes, kā arī izdarīt secinājumus un izvirzīt priekšlikumus saistībā ar analizējamo uzņēmumu. Darba mērķa izpildei izvirzīti sekojoši uzdevumi: 1) raksturot finanšu pārskatu normatīvo bāzi, 2)...

  20. Manual práctico de reproducción masiva de Amblyseius californicus, usado en el control biológico de Tetranychus urticae

    OpenAIRE

    Colcha Rovalino, Segundo Efraín

    2013-01-01

    El Manual práctico de reproducción masiva de (Amblyseius californicus), usado en el control biológico de (Tetranychus urticae), brindará una alternativa válida y efectiva para el control del ácaros plaga, explicando paso a paso todos los procesos que conllevan a obtener la reproducción del ácaro benéfico hasta su liberación y control en el campo, y así garantizar el éxito, sin pérdidas de cosecha por la implementación de este método biológico, reemplazando al método químico que a la ves caus...

  1. Starptautiskā uzņēmuma "Adidas Group" pārstāvniecības "Adidas Baltic SIA" izmantotie mārketinga komunikāciju veidi sporta apavu "Adidas Energy Boost" virzīšanai tirgū.

    OpenAIRE

    Štubis, Guntis

    2016-01-01

    Bakalaura darbā tiek analizēts starptautiska uzņēmuma „Adidas group” pārstāvniecības Latvijā „Adidas Baltic SIA” izmantotās mārketinga komunikācijas .Par praktisku piemēru autors izvēlējās sporta apavus „Adidas Energy Boost” virzīšanu tirgū. Bakalaura darba mērķis ir, pamatojoties uz teorētiskām atziņām un aptaujas rezultātiem , izpētīt uzņēmuma „adidas Baltics SIA” virzītā produkta „Adidas Energy Boost” mārketinga komunikāciju efektivitāti Latvijas tirgū, atklāt to nepilnības un sniegt p...

  2. Start-up uzņēmuma mārketinga stratēģijas izstrādes īpatnības finanšu tehnoloģiju pakalpojumu nozarē

    OpenAIRE

    Čumakovs, Andrejs

    2014-01-01

    Maģistra darba tēma ir „Start-up uzņēmuma mārketinga stratēģijas izstrādes īpatnības finanšu tehnoloģiju pakalpojumu nozarē”. Maģistra darba mērķis ir Pētījuma mērķis ir izpētīt start-up uzņēmumu attīstības tendences finanšu tehnoloģiju nozarē un izpētīt mārketinga stratēģijas izstrādes prioritāros etapus start-up uzņēmumiem un investoriem šajos uzņēmumos. Darba pirmajā nodaļā autors pēta pakalpojuma kā produkta būtību un īpatnības. Darba otrajā nodaļā autors pēta start-up uzņēmumu būtību...

  3. Ēdināšanas pakalpojumu uzņēmuma darbības efektivitātes paaugstināšanas iespējas

    OpenAIRE

    Buivide, Jūlija

    2013-01-01

    Maģistra darba tēma ir „Ēdināšanas pakalpojumu uzņēmuma darbības efektivitātes paaugstināšanas iespējas”. Latvijā lielāka uzņēmumu daļa, kas ir saistīta ar izmitināšanas un ēdināšanas pakalpojumu sniegšanu, saskārās ar lielu problēmu apjomu. Pirmkārt, samazinājās apmeklētāju skaits, un tas varētu būt saistīts kā ar maksātspējas pazemināšanos, tā arī ar viesnīcas vai restorānu pievilcības pasliktināšanos vai apkalpošanas kvalitātes pasliktināšanos. Samazinājās arī tūristu skaits. Tas, otrkā...

  4. Z paaudzes darba motivācijas noteicošie faktori un to ietekme uz uzņēmuma kopējo motivācijas sistēmu.

    OpenAIRE

    Riekstiņa, Ilze

    2017-01-01

    Maģistra darba tēma ir „ Z paaudzes darba motivācijas noteicošie faktori un to ietekme uz uzņēmuma kopējo motivācijas sistēmu’’. Maģistra darba mērķis ir pamatojoties uz teorijās sniegtajām atziņām par darba motivāciju un iegūtajiem aptaujas rezultātiem identificēt noteicošos darba motivācijas faktorus Z paaudzei un izstrādāt priekšlikumus, kurus personāla speciālisti varētu izmantot darbā ar Z paaudzi. Lai sasniegtu izvirzīto mērķi, autore apkopoja teorētiskās atziņas par motivācijas n...

  5. Uzņēmuma darbiniekus aizsargājoša ugunsmūra un papildus drošības modeļu izstrāde

    OpenAIRE

    Dālbergs, Ģirts

    2017-01-01

    Mūsdienās arvien pieaug tīkla lietotāju gala darbstaciju apdraudējumu klāsts, kas nozīmē, ka ir jānodrošina arvien efektīvāki rīki, lai cīnītos ar iespējamajiem apdraudējumiem. Šī iemesla dēļ ugunsmūru tehnoloģiju popularitāte pieaug, un tirgū ir pieejami vairāki konkurētspējīgi risinājumi. Bakalaura darba mērķis ir izpētīt un salīdzināt dažādos komerciālos un atvērtā koda risinājumus, kā arī, pielietojot kādu no risinājumiem, izstrādāt uzņēmuma darbinieku darbstaciju aizsargājošu ugunsmūri u...

  6. Uzņēmuma tēla ietekme uz zīmola popularitāti, pamatojoties uz "Nike Inc." kompānijas piemēru.

    OpenAIRE

    Kadauova, Aļona

    2015-01-01

    Šī diplomdarba tēmas aktualitāti nosaka tas, ka pētījumi un praktiskā pieredze parāda, ka mūsdienās veiksmīgai kompānijai ir jābūt zīmola stratēģijai, kas ir virzīta uz patērētāja uzticības veidošanu. Tā kā zīmola „vērtību” nosaka patērētāja gatavība iegādāties preci par daudz augstāku cenu, ja tirgū ir citu prečzīmju analoģiskās preces. Šī diplomdarba mērķis ir uzņēmuma tēla ietekmes uz zīmola popularitāti būtības atklāšana, izanalizējot teoriju. Kā arī izpētīt kompānijas "Nike Inc." zīmo...

  7. Sociālo tīklu un platformas "Facebook" ietekme uz patērētāja pirkuma lēmuma pieņemšanas procesu.

    OpenAIRE

    Ķiksis, Kristiāns

    2017-01-01

    Bakalaura darba tēma ir “Sociālo tīklu un platformas “Facebook” ietekme uz patērētāja pirkuma lēmuma pieņemšanas procesu”. Veiktā darba mērķis ir izskaidrot, kāpēc, kad un kā sociālie mediji ir ietekmējuši patērētāju lēmumu pieņemšanas procesu. Teorētiskā daļa sastāv no 4 sadaļām- patērētāju uzvedība, sociālie mediji, sociālo mediju ietekme uz patērētājiem, kā arī platformas “Facebook” iespējas. Darbs ietver 4 nodaļas. Bakalaura darba teorētiskajā daļā apkopoti materiāli par patērētāju uzvedī...

  8. Reklāmas ietekme uz uzņēmuma tēla veidošanos integrētā mārketinga komunikācijās. Olimpiskā centra "Ventspils" piemērs

    OpenAIRE

    Boitmane, Līva

    2008-01-01

    Latvijā pēdējo gadu laikā tiek atvērti arvien jauni Olimpiskie centri, tādēļ bakalaura darba „Reklāmas ietekme uz uzņēmuma tēlu integrētā mārketinga komunikācijās. Olimpiskā centra „Ventspils” piemērs”, mērķis ir izpētīt, kā Olimpiskais centrs „Ventspils” veido savu uzņēmuma tēlu, vai strādājot pie pakalpojumu reklāmas izveides tiek mērķtiecīgi veidots Olimpiskā centra tēls jeb imidžs. Darbā sākotnēji tiek analizēta integrētā mārketinga komunikācijas teorija, aprakstīta viena no tā sastāv...

  9. Life Table Parameters and Consumption Rate of Cydnodromus picanus Ragusa, Amblyseius graminis Chant, and Galendromus occidentalis (Nesbitt on Avocado Red Mite Oligonychus yothersi (McGregor (Acari: Phytoseiidae, Tetranychidae Parámetros de Tabla de Vida y Tasa de Consumo de Cydnodromus picanus Ragusa, Amblyseius graminis Chant y Galendromus occidentalis (Nesbitt, sobre la Arañita Roja del Palto Oligonychus yothersi (McGregor (Acari: Phytoseiidae, Tetranychidae

    Directory of Open Access Journals (Sweden)

    Tommy Rioja S

    2009-06-01

    Full Text Available The avocado red mite Oligonychus yothersi (McGregor is the major leaf pest in Chile’s avocado orchards. Itaffects leaf physiology and makes it necessary to seek new natural enemies to interact with low population densities of O. yothersi. The potentiality of three predator mites: Cydnodromus picanus Ragusa, Amblyseius graminis Chant, and Galendromus occidentalis (Nesbitt was evaluated under laboratory conditions (27 ± 1.93ºC, 87 ± 3.61% H.R. and 16:8 (L:D photoperiod on avocado leaf disks Persea americana Mill. var. Hass (Ø = 5 cm by separately feeding eggs, immature, and adult females of O. yothersi, and registering postembryonic development, consumption, as well as life table parameters. The postembryonic development of C. picanus was significantly lower (5.46 days compared to both A. graminis (7.33 days and G. occidentalis (8.69 days which were fed with immature O. yothersi. The life table parameters of C. picanus were net reproductive rate R0 = 25.41, finite rate of increase λ = 1.29, and Mean Generation Time T = 12.46. The Net Intrinsic Rate of Increase (r m was significantly higher for C. picanus (r m = 0.25 in contrast with G. occidentalis (r m = 0.19, while A. graminis showed r m = -0.06 indicating that its population didn’t have descendants. Under laboratory conditions, r m registered by C. picanus is an indicator of its predatory potential to control O. Yothersi. It can be assumed that the pest population reduction pattern could be maintained under field conditions.En Chile la arañita roja del palto Oligonychus yothersi (McGregor es la plaga más importante a nivel foliar en huertos comerciales afectando la fisiología de la hoja, siendo necesario la búsqueda de nuevos enemigos naturales que interactúen a bajas densidades poblacionales de O. yothersi. Se evaluó en condiciones de laboratorio (27±1,93ºC, 87±3,61 % H.R. y un fotoperíodo de 16:8 (L:O sobre discos de hojas de palto Persea americana Mill. var. Hass (Ø = 5

  10. Orbital Foreign Body, A Case Report | Muma | Medical Journal of ...

    African Journals Online (AJOL)

    Penetrating injury to the orbit is a common presentation to the ophthalmology outpatient section. An orbital foreign body may be overlooked because a small penetrating wound may be accompanied by minimal or no signs of inflammation early in the clinical course. A good history accompanied by Computer Tomography ...

  11. ÁCAROS ASOCIADOS AL CULTIVO DEL AGUACATE (Persea americana Mill EN LA COSTA CENTRAL DE PERÚ

    Directory of Open Access Journals (Sweden)

    Jorge Luis Muñoz Marticorena

    2014-01-01

    Full Text Available En la costa central de Perú (Lima e Ica, se cultiva el aguacate con fines de exportación, especialmente la variedad Hass. Con el objetivo de conocer la diversidad de ácaros depredadores en huertos comerciales de aguacate, se realizaron recolectas en 6 lugares de la costa central, duran - te el 2010 al 2012. Se registraron 12 especies de la familia Phytoseiidae, de los cuales algunos tendrían potencial como depredadores eficien - tes de Oligonychus sp . (Guanilo et ál. 2012; estos son: Amblyseius aerialis (Muma, Ambly - seius chungas (Demmark y Muma, Amblyseiella setosa (Muma, Euseius emanus (El–Banhawy, Euseius concordis (Chant, Euseius stipulatus (Athias–Henriot, Phytoseiulus persimilis (Athias Henriot, Phytoseiulus macropilis (Banks, Neo - seiulus californicus (McGregor, Typhlodromina subtropica (Chant, Typhlodromus ( Antoseius evectus (Schusters y Aristadromips n.sp. Se con - firmó que la vegetación espontánea cumple un rol importante en la conservación de las especies halladas en este cultivo y que además la intro - ducción de un ácaro depredador exótico, como Euseius stipulatus, contribuyó significativamente con el control de la plaga durante la temporada de invierno.

  12. [Mites (Acari) associated to Myrtaceae in areas of Cerrado in the State of São Paulo with faunistic analysis of families Tarsonemidae and Phytoseiidae].

    Science.gov (United States)

    Lofego, Antonio C; de Moraes, Gilberto J

    2006-01-01

    The objective of this study was to determine and to analyse the diversity of mites on native Myrtaceae of the "Cerrado" vegetation type of the State of São Paulo, with particular attention to the families Phytoseiidae and Tarsonemidae. In the year 2000, mites were collected from Myrtaceae species in three "Cerrado" areas in the State of São Paulo. Samples of leaves, flowers and fruits were taken from three plant of each species in each site. Mites of 49 genera belonging to 14 families were found. Fourteen phytoseiid species of nine genera and 19 tarsonemid species of six genera were collected. The most abundant phytoseiids were Euseius citrifolius Denmark & Muma, Transeius bellottii (Moraes & Mesa) and Amblyseius acalyphus Denmark & Muma. The most abundant tarsonemids were Daidalotarsonemus tesselatus DeLeon, Daidalotarsonemus folisetae Lofego & Ochoa and Metatarsonemus megasolenidii Lofego & Ochoa. The highest indexes of diversity of phytoseiids and tarsonemids were observed in the fall; the lowest indexes were found in the winter for phytoseiids and in the spring for tarsonemids. Taking into consideration the total number of phytoseiids and tarsonemids collected in this work, the corresponding indexes of diversity (Shannon) were similar and close to 2.0. Different predatory mite species prevailed on distinct plant species, indicating the complementariness of the latter as reservoirs of the former.

  13. Effect of dinotefuran on Bemisia tabaci (MED whitefly) and Amblyseius swirskii, 2016

    Science.gov (United States)

    Bemisia tabaci is a polyphagous pest known to feed upon over 900 plant taxa, and is an effective vector of more than 100 plant damaging viruses. Among different biotypes of this cryptic species complex, MEAM1 and MED whitefly are the two most destructive members posing threats of several crops of ec...

  14. Effect of foliar application of Xxpire on Bemisisa tabaci (MED whitefly) and Amblyseius swirskii, 2016

    Science.gov (United States)

    Bemisia tabaci is a polyphagous pest known to feed upon over 900 plant taxa, and is an effective vector of more than 100 plant damaging viruses. Among different biotypes of this cryptic species complex, MEAM1 and MED whitefly are the two most destructive members posing threats of several crops of ec...

  15. Effect of soil application of cyantraniliprole on Bemisia tabaci (MED whitefly) and Amblyseius swirskii, 2016

    Science.gov (United States)

    Bemisia tabaci is a polyphagous pest known to feed upon over 900 plant taxa, and is an effective vector of more than 100 plant damaging viruses. Among different biotypes of this cryptic species complex, MEAM1 and MED whitefly are the two most destructive members posing threats of several crops of ec...

  16. Impact of drench application of cyantraniliprole on Bemisia tabaci (MED whitefly) and Amblyseius swirskii, 2016

    Science.gov (United States)

    Bemisia tabaci is a polyphagous pest known to feed on over 900 plant taxa, and is an effective vector of more than 100 plant damaging viruses. Among different biotypes of this cryptic species complex, MEAM1 and MED whitefly are the two most destructive members posing threats of several crops of econ...

  17. Efficacy of foliar application of flupyradifurone on Bemisia tabaci (MED whitefly) and Amblyseius swirskii, 2017

    Science.gov (United States)

    Bemisia tabaci is a polyphagous pest known to feed upon over 900 plant taxa, and is an effective vector of more than 100 plant damaging viruses. Among different biotypes of this cryptic species complex, MEAM1 and MED whitefly are the two most destructive members posing threats of several crops of ec...

  18. Impact of pymetrozine on Bemisia tabaci (MED whitefly) and Amblyseius swirskii, 2017

    Science.gov (United States)

    Bemisia tabaci is a polyphagous pest known to feed upon over 900 plant taxa, and is an effective vector of more than 100 plant damaging viruses. Among different biotypes of this cryptic species complex, Middle East-Asia Minor 1 (MEAM1) and Mediterranean (MED) whitefly are the two most destructive me...

  19. Effect of foliar application of pymetrozine on Bemisia tabaci (MED whitefly) and Amblyseius swirskii, 2016

    Science.gov (United States)

    Bemisia tabaci is a polyphagous pest known to feed upon over 900 plant taxa, and is an effective vector of more than 100 plant damaging viruses. Among different biotypes of this cryptic species complex, MEAM1 and MED whitefly are the two most destructive members posing threats of several crops of ec...

  20. Effect of drench application of flupyradifurone on Bemisia tabaci(MED whitefly) and Amblyseius swirskii, 2017

    Science.gov (United States)

    Bemisia tabaci is a polyphagous pest known to feed on over 900 plant taxa, and is an effective vector of more than 100 plant damaging viruses. Among different biotypes of this cryptic species complex, Middle East-Asia Minor 1 (MEAM1) and Mediterranean (MED)whitefly are the two most destructive membe...

  1. Potentialités de l'acarien prédateur Amblyseius swirskii (Athias ...

    African Journals Online (AJOL)

    ainsi l'incidence de la mosaïque sur les plants de manioc. Pour chacune des deux populations du prédateur, les taux de prédation, d'oviposition et de survie des femelles adultes nourries aux larves de premier stade de B. tabaci, en présence ou en absence de pollen de maïs, étaient très faibles par rapport à ceux obtenus ...

  2. Biologische spintbestrijding in roos : ontwikkeling van de inheemse roofmijt Amblyseius andersoni

    NARCIS (Netherlands)

    Linden, van der A.

    2004-01-01

    Spint behoort tot de belangrijkste plagen in roos. In de meeste gevallen gaat het om bonespintmijt Tetranychus uticae Koch (Acari: Tetranychidae), maar in mindere mate kan ook fruitspint Panonychus ulmi (Koch) (Acari: Tetranychidae) optreden. Bonespint overwintert als bevruchte vrouwtjes door vanaf

  3. Prevalence of sensitization to the predatory mite Amblyseius cucumeris as a new occupational allergen in horticulture.

    Science.gov (United States)

    Groenewoud, G C M; de Graaf in 't Veld, C; vVan Oorschot-van Nes, A J; de Jong, N W; Vermeulen, A M; van Toorenenbergen, A W; Burdorf, A; de Groot, H; Gerth van Wijk, R

    2002-07-01

    Protection against thrips, a common pest in bell pepper horticulture is effectively possible without pesticides by using the commercially available predatory mite Amblyzeius cucumeris (Ac). The prevalence of sensitization to Ac among exposed greenhouse employees and its clinical relevance was studied. Four hundred and seventytwo employees were asked to fill in a questionnaire and were tested on location. Next to RAST, skin prick tests (SPTs) were performed with common inhalant allergens, the storage mite Tyrophagus putrescentiae (Tp) which serves as a temporary food source during the cultivation process and Ac. Furthermore, nasal challenge tests with Ac were carried out in 23 sensitized employees. SPTs positive to Ac were found in 109 employees (23%). Work-related symptoms were reported by 76.1%. Sensitization to Tp was found in 62 employees of whom 48 were also sensitized to Ac. Immunoglobulin (Ig)E-mediated allergy to inhalant allergens appeared to be an important risk factor for sensitization to Ac. Employees with rhinitis symptoms showed a significantly higher response to all Ac doses during the nasal challenge test compared with employees without rhinitis symptoms. The predatory mite Ac is a new occupational allergen in horticulture which can cause an IgE-mediated allergy in exposed employees. It is biologically active on the mucous membranes of the nose and therefore clinically relevant for the development of work-related symptoms.

  4. 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

  5. Mites in assai palms (Euterpe oleracea Mart. conducted under different cropping systems = Acarofauna em açaizeiro (Euterpe oleracea Mart. conduzido em diferentes sistemas de cultivo

    Directory of Open Access Journals (Sweden)

    Rodrigo Aguiar Rodrigues

    2016-10-01

    Full Text Available The assai palm (Euterpe oleracea is the most important palm tree of the genus Euterpe known in Brazil, which is grown under monocrop and intercrop systems. Despite its great usefulness, this palm tree is important for supplying two cost-effective food products, the fruit and the palm hearts. Due to its importance, the aim of this study was to carry out a survey of mite fauna present in assai crops in the town of São Luis, in the State of Maranhão, Brazil. Samples were collected monthly from August 2012 to July 2013, in assai groves under two systems of cultivation: monocrop and intercrop. A faunistic analysis was carried out using the ANAFAU software, when the following indices were determined: abundance, frequency, dominance, constancy and diversity. A total of 6,274 mites were found, with 4,748 in the intercrop system and 1,526 in the monocrop system. Among the occurrence of phytophagic mites, the families Tenuipalpidae and Tetranychidae were significant in both crops. For the families of predatory mites, the phytoseiid was considered super-dominant, super-abundant, super-frequent and constant; the species Amblyseius largoensis, Euseius concordis and Iphiseiodes zuluagai were dominant under both cropping systems, but the intercrop displayed greater diversity compared to the monocrop. For population dynamics, larger populations of mites were seen in periods of low rainfall under the two systems studied. = O açaizeiro (Euterpe oleraceae é a mais importante palmeira do gênero Euterpe conhecida no Brasil, que é cultivada em sistemas de cultivo solteiro e consorciado. Apesar da grande utilidade, esta palmeira se destaca no fornecimento de dois produtos alimentares economicamente rentáveis, os frutos e o palmito. Em razão da sua importância, objetivou-se com este trabalho realizar o levantamento da acarofauna presente em cultivos de açaizeiro no município de São Luís - Maranhão. As amostragens foram realizadas mensalmente, no per

  6. Acarofauna da cafeicultura de cerrado em Patrocínio, Minas Gerais Acarofauna of cerrado's coffee crops in Patrocínio, Minas Gerais

    Directory of Open Access Journals (Sweden)

    Sheila Spongoski

    2005-02-01

    Full Text Available A cultura do cafeeiro (Coffea arabica L. na região de cerrado do Estado de Minas Gerais, mais especificamente no Alto Paranaíba, está se desenvolvendo com muito sucesso. As doenças e pragas vêm causando redução na produtividade e na qualidade do café produzido. Os ácaros fitófagos fazem parte deste problema, pois causam danos econômicos. Sendo assim, este trabalho teve como objetivo o levantamento da acarofauna em cafeeiros daquela região. Foram feitas quatro amostragens de folhas, ramos e frutos, sendo duas no período das águas e duas no período de seca em 2002 e 2003. Foram identificadas três famílias de ácaros fitófagos, quatro de ácaros predadores e quatro de ácaros generalistas. As espécies de ácaros encontradas foram: Brevipalpus phoenicis (Geijskes, 1939 (Tenuipalpidae; Oligonychus sp. (Tetranychidae; Tarsonemus confusus Ewing, 1939, Fungitarsonemus sp., Daidalotarsonemus sp., Phytonemus sp. (Tarsonemidae; Lorrya formosa Cooreman, 1958, Lorrya sp. (Tydeidae; Parapronematus acaciae Baker, 1965 (Iolinidae; Euseius concordis (Chant, 1959, Euseius citrifolius Denmark e Muma, 1970, Amblyseius herbicolus (Chant, 1959 (Phytoseiidae; Asca sp. (Ascidae; Bdella sp. (Bdellidae; Zetzellia sp. (Stigmaeidae, e espécimes da família Acaridae e da subordem Oribatida não identificadas. Trata-se do primeiro relato da ocorrência da espécie T. confusus em cafeeiro. Da família Tarsonemidae foram encontradas três novas espécies, e da família Iolinidae um novo gênero, para posterior descrição.The coffee (Coffea arabica L. growing in Cerrado areas of Patrocínio, State of Minas Gerais, more specifically in the region of Alto Paranaíba, have been expanding with success. Coffee diseases and pests result in reduction of the productivity and quality. Phytophagous mites are among the pests that cause economic damage. Therefore, this work had as objective the study of the mite fauna on coffee plants in those areas. Four surveys were

  7. Uzņēmuma "ArtBag"stratēģija eksporta konkurētspējas paaugstināšanai

    OpenAIRE

    Lase-Lasmane, Zane

    2012-01-01

    Šī darba mērķis ir analizēt internetā bāzētu individualizētu rokassomiņu un apavu uzņēmumu stratēģijas un noskaidrot, vai tās izmanto kādu no ekonomiskajā literatūrā biežāk citētajām stratēģijām vai izvēlas vairāku stratēģiju sajaukumu. Darbā aplūkotas M. Portera Zemu izmaksu līderības, Diferenciācijas un Fokusa stratēģijas, kā arī V. Čana Kima un R. Mabornas Zilā okeāna stratēģija, definēts masveida individualizācijas fenomens. Pētnieciskajā daļā veikta divu nozares uzņēmumu – „Shoes of Prey...

  8. Pakalpojumu orientētas arhitektūras pielietojums uzņēmuma sistēmu integrācijā

    OpenAIRE

    Rivars, Kaspars

    2015-01-01

    Implementējot SOA risinājumus, uzņēmumiem bieži nākas saskarties ar vairākām problēmām, sākot no tehniskās realizācijas līdz kļūdainām darījuma prasībām. No tām palīdzēs izvairīties pirms un pēc implementācijas analīze, kas tika definēta maģistra darbā. Maģistra darbā tiks apskatīta un analizēta servisu orientētas arhitektūras (SOA) pieeja sistēmu integrācija. Darbs satur SOA teorētisko raksturojumu, SOA analīzes metodoloģiju pirms un pēc implementācijā un reālas SOA implementācijas analī...

  9. Finteh uzņēmuma nākotnes stratēģijas varianti mikro finansējuma pakalpojumu sektorā Krievijas tirgū

    OpenAIRE

    Veilands, Toms

    2018-01-01

    Šai maģistra darbā tiek apskatīts un analizēts finteh sektors un tā dalībnieka, mikro finanšu pakalpojumu sniedzēja esošā situācija un nākotnes stratēģijas iespējas Krievijā. Darbs sastāv no trim galvenajām daļām - teorētiskās daļas, kur autors apraksta par to, kas notiek pasaulē un Krievijā finteh sektorā, kā arī aplūko darbojošos elementus un komponentes kuras tiek izmantotas, lai veidotu mūsdienīgus finteh risinājumus. Darba otrajā daļā ir veikta finteh sektora analīze ar fokusu uz MFO dar...

  10. Elektroniskās un mobilās komercijas attīstības tendences un to ietekme uzņēmuma darbībā

    OpenAIRE

    Krūze, Antra

    2009-01-01

    Šī maģistra darba mērķis - izpētīt esošo situāciju un izvērtēt potenciālu elektroniskajā un mobilajā komercijā, sniegt priekšlikumus nozares speciālistiem mārketinga aktivitāšu plānošanā. Temata izvēles pamatā ir pieņēmums, ka Latvijas uzņēmēju un nozares speciālistu zināšanas par e-komercijas un m-komercijas iespējām un potenciālu ir nepietiekamas, kas radies analizējot masu mediju, reklāmas un mārketinga ekspertu viedokļus dažādās intervijās vai aģentūru publikācijās. Maģistra darbā ir ...

  11. Biological control of two-spotted spider mites using phytoseiid predators

    NARCIS (Netherlands)

    Sabelis, M.W.

    1982-01-01

    The searching behaviour of individual predators of four phytoseiid species ( Phytoseiulus persimilis , Amblyseius p o tentillae , Amblyseius bibens , Metaseiulus occidentalis ) is investigated in

  12. Mite (Acari) fauna of some cultivated plants from Kahramanmaras ...

    African Journals Online (AJOL)

    Phytophagous mites, Tetranychus turkestani (Ugarov and Nikolski) and Tetranychus cinnabarinus Boisduval, were obtained from eggplant, bean, and cucumber. Predatory mites Phytoseius finitimus Ribaga and Amblyseius andersoni (Chant) (Acari: Phytoseiidae) were identified from eggplant and cucumber, respectively.

  13. Ontwikkeling en implementatie van geïntegreerde bestrijding in zomerbloemen : toepassing van beschikbare producten en ontwikkeling van nieuwe natuurlijke vijanden

    NARCIS (Netherlands)

    Linden, van der A.; Hoek, van den C.; Krouwer, J.

    2010-01-01

    In 2008 en 2009 werden loslatingen verricht van de roofmijten Neoseiulus cucumeris en Amblyseius andersoni, soms aangevuld met Phytoseiulus persimilis, in de zomerbloemen rozenbottel, chrysant, Veronica, Alchemilla en Delphinium. Hierbij bleek dat roofmijten zich niet in alle gewassen in gelijke

  14. Biological control of two-spotted spider mites using phytoseiid predators

    OpenAIRE

    Sabelis, M.W.

    1982-01-01

    The searching behaviour of individual predators of four phytoseiid species ( Phytoseiulus persimilis , Amblyseius p o tentillae , Amblyseius bibens , Metaseiulus occidentalis ) is investigated in relation to the two-spotted spider mite ( Tetranychus urticae ), which infests greenhouse roses. Especially the role of spider- mite webbing in the predator-prey relation is s...

  15. Firmas mārketinga mikrovides faktoru analīze

    OpenAIRE

    Liniņa, Kristīne

    2010-01-01

    Lai uzņēmums spētu efektīvi darboties, katram uzņēmējam ir jāvērtē uzņēmuma darbs un jāveic tā analīze. Uzņēmuma darbību ietekmē daudzi gan iekšējie, gan ārējie faktori. Savas uzņēmējdarbības uzlabošanai, katram vadītājam ir jāanalizē uzņēmuma ietekmējošie faktori, tādējādi novēršot darbības trūkumus un pilnveidojot uzņēmuma darbību. Darbā ir pētīta firmas darbība, mārketinga mikrovide un to veidojošie faktori. Bakalaura darba mērķis ir pētīt, kāda ir uzņēmuma SIA „Amaranta” mikrovide un ...

  16. Compatibilidad de Eretmocerus mundus Mercet (Hymenoptera: Aphelinidae) y Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae), importantes enemigos naturales de la mosca blanca Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) en cultivos hortícolas, con nuevas barreras físicas selectivas y modernos plaguicidas

    OpenAIRE

    Fernández Gallego, María del Mar

    2016-01-01

    Los programas de Gestión Integrada de Plagas (GIP) promueven el uso de estrategias de control que sean respetuosas con el medio ambiente, sin embargo el uso de insecticidas en los cultivos hortícolas sigue siendo necesario para el control de determinadas plagas, como es el caso de la mosca blanca Bemisia tabaci (Gennadius). Por ello, el objetivo de esta tesis es el estudio de la integración de las tres estrategias de control más empleadas hoy en día para el control de plagas: el control bioló...

  17. 39Revista de CIÊNCIAS da EDUCAÇÃOCAIRES, S.; MASETTI, M.Uma pedagogia através do olhar do palhaço no contexto de saúde...UNISAL, Americana, SP, ano XVII no 33 p. 39-57 jul./dez. 2015Uma pedagogia através do olhar do palhaço no contexto de saúde: subsídios para a humanização pediátrica

    Directory of Open Access Journals (Sweden)

    Susana Caires

    2015-12-01

    Full Text Available In this paper the authors present the principles, objectives and basic method-ologies of a pedagogical proposal developed by Doutores da Alegria, a Brazilian association of professional hospital clowns, and having students and health care professionals as target audience. The training and research, conducted in partnership with Universidade do Minho, Portugal, is based in the hospital clown’s philosophy of action, and seeks opportunities amongst the trainees to experience, analyze and discuss the subtleties inherent to the (inter actions and emotions that are present in pediatric care settings and that normally are not explored within their formal education. The experience of each of the trainees is considered as the primary training resource, and the body and af-fects as structuring scenarios for the learning process and knowledge build-ing. Through the lens, emotions and actions of the clown some opportunities are created in order to promote the “encounter” of each of the trainees with themselves and with “the other”, generating contributions for the professional (and personal development of these healthcare agents. This proposal appears also to encompass some potential value in the training of other professionals for whom care, education and human contact are key elements.

  18. Isolation of Bacillus anthracis from dry cattle meat, skin and soil from ...

    African Journals Online (AJOL)

    Isolation of Bacillus anthracis from dry cattle meat, skin and soil from the Western Province of Zambia. LM Tuchili, JB Muma, T Fujikura, GS Pandey, MM Musonda, G Bbalo, W Ulaya. Abstract. No Abstract Available Journal of Science and Technology Vol.1(2) 1997: 56-58. Published 2004. Full Text: EMAIL FULL TEXT EMAIL ...

  19. Surveillance of injuries among Kenya Rugby Union (KRU) players ...

    African Journals Online (AJOL)

    Surveillance of injuries among Kenya Rugby. Union (KRU) players — Season 2010. Authors: Muma N1 MBChB, MMed, Saidi H2 MBChB, MMed, FACS, Githaiga3 JW MBChB, MMed. Affiliation: 1- Kijabe Hospital, Kenya 2- Department Human Anatomy, University of Nairobi 3- Department of Surgery, University of. Nairobi.

  20. Complementary description of Neoseiulus tunus (De Leon) (Acari: Mesostigmata: Phytoseiidae) and observation on its reproductive strategy

    OpenAIRE

    Cavalcante, Ana C.C.; Demite, Peterson R; Amaral, Felipe S.R.; Lofego, Antonio C.; de Moraes, Gilberto J.

    2017-01-01

    International audience; Neoseiulus tunus (De Leon) is one of the most frequent species of this genus in the Neotropical Region, reported on several plants and localities. In this study, the morphological characterization of various Brazilian populations of this species is presented. Females and males are illustrated. Neoseiulus neotunus (Denmark & Muma) is here considered a junior synonymn of N. tunus. Thelytokous parthenogenesis is reported for the first time for this species, based on two p...

  1. AS "PET Baltija" saimnieciskās darbības finanšu analīze un attīstības iespējas

    OpenAIRE

    Strazdiņa, Evija

    2014-01-01

    Bakalaura darba mērķis ir izpētīt un analizēt AS „PET Baltija” finanšu pārskatus no 2007.-2012.gadam, balstoties uz veiktajiem aprēķiniem no dotās finanšu informācijas, analizējot un izdarot secinājumus par uzņēmuma finansiālo stāvokli ietekmējošiem faktoriem un izvirzot priekšlikumus uzņēmuma saimnieciskās darbības veicināšanai un turpmākai attīstībai. Darba gaitā bakalaura darba izstrādāšanai, pielietojot nozīmīgākos finanšu rādītājus, tika secināts, ka uzņēmuma darbību negatīvi ietekmēj...

  2. Personāla vadīšana uzņēmumā SIA „X”

    OpenAIRE

    Kličovs, Andrejs

    2007-01-01

    Dotā bakalaura tēma ir „Personāla vadīšana uzņēmumā SIA „X””. Uzņēmuma darbības veids ir izklaides centrs ar boulingu, bāru un biljardu. Darba mērķis ir izanalizēt uzņēmuma personāla vadību un izpetīt personāla vadības pamatprocesus. Bakalaura darbs sastav no trijām nodaļām Pirmā darba daļa sniedz darba teorētisko pamatojumu, dod skaidrojumu darbā pētītiem faktoriem, kā arī sniedz nelielu ieskatu personāla vadīšanas tendencēs Latvijā, Eiropā un pasaulē. Otrā daļa sastāv no uzņēmuma ...

  3. Pieprasījuma veicināšanas iespējas „Coca – Cola HBC Latvia” uzņēmumā krīzes apstākļos

    OpenAIRE

    Petjukeviča, Tatjana

    2010-01-01

    Bakalaura darba mērķis ir izpētot Latvijas bezalkoholisku dzērienu nozares attīstības tendences un vadošo uzņēmuma menedžmentu, atrast pieprasījuma veicināšanas iespējas „Coca-Cola HBC Latvia” uzņēmuma produkcijai krīzes apstākļos. Šis uzņēmums ir viens no Latvijas vadošajiem uzņēmumiem bezalkoholisko dzērienu tirdzniecībā, tomēr krīze negatīvi ietekmēja uz tā neto apgrozījuma izmaiņām, tāpēc ir nepieciešams izstrādāt vairākus pasākumus pieprasījuma veicināšanai šā uzņēmuma produkcijai. Darba...

  4. Personālvadības aspekti uzņēmumā SIA "DLLK"

    OpenAIRE

    Lieldaudziete, Baiba

    2018-01-01

    Bakalaura darba „Personālvadības aspekti uzņēmumā SIA „DLKK” mērķis ir, pamatojoties uz teorētiskajā daļā iegūtajām atziņām un praktiskās daļas- SIA „DLLK” prakses laikā un darbinieku aptaujā, kā arī sarunā ar uzņēmuma vadītāju iegūto informāciju, izanalizēt uzņēmuma personāla vadīšanas funkcijas, to nozīmi ikdienas darbībā un izstrādāt priekšlikumus uzņēmuma personālvadības sistēmas pilnveidošanai. Darba struktūra ir pakārtota definētajiem uzdevumiem- tas sastāv no ievada, teorēt...

  5. Biznesa sociālā tīkla "Linkedin" vērtības noteikšana

    OpenAIRE

    Jurcāns, Dans

    2013-01-01

    Maģistra darba mērķis ir, balstoties uz LinkedIn darbības un finanšu pārskatu analīzi, noteikt uzņēmuma pašreizējo vērtību, salīdzināt to ar šībrīža vērtējumu akciju tirgū, kā arī izvirzīt priekšlikumus investoriem par LinkedIn akciju iegādi vai pārdošanu, un uzņēmuma vadībai par iespējām palielināt uzņēmuma vērtību nākotnē. Autors ir aplūkojis divas izplatītākās uzņēmumu vērtēšanas metodes - iekšējās vērtības noteikšanu un relatīvo vē...

  6. Modeling-based Risk Analysis of a Small Enterprise/ Modelēšanā bāzēta mazā uzņēmuma risku analīze/ Анализ рисков малого предприятия на основе моделирования

    Directory of Open Access Journals (Sweden)

    Bendza Kristine

    2014-12-01

    Full Text Available Повышенное давление глобализации и быстрого технического прогресса в последние годы выдвинули управление и анализ рисков, играющих всё более важную роль в повестке дня руководителей, в центр внимания большинства предприятий. Несмотря на разнообразие источников информации, единого подхода к анализу рисков не существует, поскольку подход зависит от конкретного бизнеса, экономических, политических и других аспектов. Кроме того, в большей части публикаций рассматриваются только крупные предприятия. Данная статья рассматривает анализ рисков малого предприятия. Целью статьи является рассмотрение подхода к анализу рисков малого предприятия. В статье рассмотрены методы анализа рисков для конкретного предприятия. Практический анализ рисков предприятия включает в себя три основных этапа: на начальном - предварительном - этапе выполнен ABC анализ складских запасов предприятия, и запасы сгруппированы по степени их важности. На базе предварительного анализа предложен качественный и количественный подход к анализу рисков изучаемого предприятия. На втором этапе выполнен качественный анализ факторов риска с использованием комбинации методов полуструктурированного интервью и причинно-следственного анализа. В результате факторы риска идентифицированы и классифицированы. На этом же этапе использована таблица оценки рисков в сочетании с матрицей рисков для оценки рисков и формулирования мероприятий по предотвращению рисков и смягчению их последствий. На третьем этапе выполнен количественный анализ рисков предприятия. Количественный анализ позволил подтвердить зависимость уровня качества обслуживания от степени изменчивости спроса и предложить математическую модель для проведения исследований факторов риска предприятия. Анализ основан на результатах моделирования с применением метода Монте Карло в программе Microsoft Office Excel. Анализ рисков малого предприятия на основе статистического моделирования даёт представление о разработанном и реализованном подходе к идентификации чувствительных точек и недостатков бизнес-процесса.

  7. KEMAMPUAN REPRODUKSI TUNGAU PREDATOR FAMILI PHYTOSEIIDAE PADA BERBAGAI KEPADATAN TETRANYCHUS URTICAE DAN POLEN TANAMAN DI SEKITAR TANAMAN SINGKONG (MANIHOT ESCULENTA CRANTZ

    Directory of Open Access Journals (Sweden)

    Bambang Heru Budianto

    2013-09-01

    Full Text Available The predatory mite of Phytoseiidae family have extensive cruising range that is not only found in cassava, but also a variety of weeds in cassava plants, such as Ageratum conyzoides and Cyperus cyperus. Extensive cruising range is also well explain the survival rate of the Phytoseiidae family at the time of the density of T. urticae decreased. The research objective is to determine the development period, fecundity and survival rate of Phytoseiidae predatory mite populations at different relative densities T. urticae and pollen. The research method used is an experimental laboratory. The procedure include the provision of A. conyzoides and C. rotundus pollen, the multiplication of predatory mite families Phytoseiidae, the determination of the development period, fecundity and survival rate of predatory mite families Phytoseiidae. The results showed that the length of time the development of predatory mites Amblyseius sp. and Phytoseius sp. faster one day of feeding on egg T. urticae feeding compared to the two types of pollen. Predatory mites survival rate Phytoseius sp. higher than the predatory mites Amblyseius sp. eggs fed T. urticae and both types of pollen. Similarly, the fecundity Phytoseius sp. higher than the mites Amblyseius sp. either fed eggs T. urticae as well as to two types of pollen.

  8. A Fundamental Step in IPM on Grapevine: Evaluating the Side Effects of Pesticides on Predatory Mites

    Directory of Open Access Journals (Sweden)

    Alberto Pozzebon

    2015-10-01

    Full Text Available Knowledge on side effects of pesticides on non-target beneficial arthropods is a key point in Integrated Pest Management (IPM. Here we present the results of four experiments conducted in vineyards where the effects of chlorpyrifos, thiamethoxam, indoxacarb, flufenoxuron, and tebufenozide were evaluated on the generalist predatory mites Typhlodromus pyri Scheuten and Amblyseius andersoni (Chant, key biocontrol agents of herbivorous mites on grapevines. Results show that indoxacarb and tebufenozide had a low impact on the predatory mites considered here, while a significant impact was observed for chlorpyrifos, flufenoxuron, and thiamethoxam. The information obtained here should be considered in the design of IPM strategies on grapevine.

  9. A Fundamental Step in IPM on Grapevine: Evaluating the Side Effects of Pesticides on Predatory Mites.

    Science.gov (United States)

    Pozzebon, Alberto; Tirello, Paola; Moret, Renzo; Pederiva, Marco; Duso, Carlo

    2015-10-09

    Knowledge on side effects of pesticides on non-target beneficial arthropods is a key point in Integrated Pest Management (IPM). Here we present the results of four experiments conducted in vineyards where the effects of chlorpyrifos, thiamethoxam, indoxacarb, flufenoxuron, and tebufenozide were evaluated on the generalist predatory mites Typhlodromus pyri Scheuten and Amblyseius andersoni (Chant), key biocontrol agents of herbivorous mites on grapevines. Results show that indoxacarb and tebufenozide had a low impact on the predatory mites considered here, while a significant impact was observed for chlorpyrifos, flufenoxuron, and thiamethoxam. The information obtained here should be considered in the design of IPM strategies on grapevine.

  10. Pielāgojama norēķinu sistēma mākoņskaitļošanas pakalpojumiem

    OpenAIRE

    Surženko, Dmitrijs

    2013-01-01

    Šajā darbā apskatīts mākoņskaitļošanas jēdziens un mākoņskaitļošanas mākoņu veidi un to funkcionālā klasifikācija. Apskatīti norēķinu sistēmas pamati balstoties uz telekomunikāciju norēķinu sistēmas pamatiem. Aprakstīta uzņēmuma N mākoņa pārvaldības infrastruktūra. Definētas mākoņskaitļošanas brokera prasības uz uzņēmuma N piemēra. Veikts vairāku mākoņskaitļošanas pakalpojumu norēķinu sistēmas apskats un aprakstīta to atbilstība pielāgojamai norēķinu sistēmai un mākoņskaitļošanas brokera pras...

  11. "Coca─Cola" zīmola virzības stratēģijas un vēstījuma analīze

    OpenAIRE

    Cekuls, Oskars

    2009-01-01

    Darba virsraksts – "Coca─Cola" zīmola virzības stratēģijas un vēstījuma analīze. Darbs kopumā izklāstīts uz 88 lappusēm, tajā iekļauti 2 attēli, 1 tabula. Darbā izmantoti 46 literatūras avoti un pievienoti 7 pielikumi. Bakalaura darba mērķis izpētīt zīmola vispārējos aspektus, kā arī viena konkrēta uzņēmuma “Coca–Cola” virzības stratēģijas un pozicionēšanas pieredzi tirgū un uzņēmuma zīmola komunikāciju ar sabiedrību. Bakalaura darba struktūra sastāv no ievada, 6 nodaļām ar apakšn...

  12. Darba organizācijas pilnveidošana nelielā IT uzņēmumā

    OpenAIRE

    Kočetkovs, Valērijs

    2010-01-01

    Darbs veltīts neliela IT uzņēmuma vadības un, detalizētāk, vienas no vadības funkciju – darba organizācijas pilnveidošanas – izpētei. Darba organizācijas pilnveidošanas process tiek apskatīts, par piemēru ņemot vienu konkrētu uzņēmumu. Lai to panāktu, tiek izpētīts vispārīgais neliela IT uzņēmuma konteksts un izceltas konteksta īpašības, kuras vadībai jāņem vērā, kā arī tiek apskatītas vadības metodoloģijas, tehnikas un rīki. Darba ietvaros tiek apskatītas divas atšķirīgas pieejas: tradici...

  13. Konkurētspējas paaugstināšanas iespējas uzņēmumā SIA "Food Leaders"

    OpenAIRE

    Masterova, Olga

    2012-01-01

    Bakalaura darbs "Konkurētspējas paaugstināšanas iespējas uzņēmumā SIA "Food Leaders". Darba mērķis ir izpētīt uzņēmuma konkurētspēju un izstrādāt priekšlikumus tās attīstīšanai. Darbs sastāv no 3 daļām. Pirmā daļa ir veltīta konkurences un konkurētspējas teorētiskiem aspektiem: konkurences un konkurētspējas definīcijas, konkurētspējīgās priekšrocības radīšanas un attīstīšanas priekšnosacījumi un vērtēšanas metodes. Darba otrajā ir dots detalizēts uzņēmuma apraksts, pētīta nozares ...

  14. Pamatlīdzekļu uzskaite un novērtēšana uzņēmumā SIA Baltijas zivis-97

    OpenAIRE

    Dzene, Helēna

    2014-01-01

    Diplomdarba mērķis ir izpētīt, un novērtēt ražošanas uzņēmuma SIA Baltijas zivis 97 pamatlīdzekļu uzskaiti un izstrādāt priekšlikumus pamatlīdzekļu uzskaites pilnveidošanai. Darbs sastāv no 4 daļām: uzņēmuma saimnieciskās darbības raksturojums; pamatlīdzekļa jēdziens, to atzīšanas uzskaites teorētiskās prasības un to piemērošana SIA Baltijas zivis 97; SIA Baltijas zivis 97 pamatlīdzekļu uzturēšanas, rekonstrukcijas un izslēgšanas darījumu uzskaite, un pamatlīdzekļu nolietojuma aprēķināšana...

  15. [Mites (Acari) from rubber trees (Hevea brasiliensis Muell. Arg., Euphorbiaceae) and spontaneous euphorbiaceous in rubber trees cultivation].

    Science.gov (United States)

    Bellini, Marcos R; Feres, Reinaldo J F; Buosi, Renato

    2008-01-01

    Quarterly samples were done in 2001 on three rubber tree plantation in the northwest of the state of São Paulo. Three rubber trees of each locality were sampled. Between the rows of rubber tree four species of spontaneous euphorbiaceous were collected: Chamaesyce hirta, C. hyssopifolia, Euphorbia heterophylla and Phyllanthus tenellus. A total of 8.954 mites of 38 species, belonging to 31 genera of 11 families were collected. Tydeidae and Phytoseiidae had the highest diversity of species, 9 and 7, respectively. The most abundant families were Eriophyidae (3.594), Tydeidae (2.825) and Tenuipalpidae (1.027). The most abundant species on the rubber trees were: phytophagous - Calacarus heveae Feres, Tenuipalpus heveae Baker, Lorryia sp.2, Lorryia formosa Cooreman and Lorryia sp.1; predators - Zetzellia quasagistemas Hernandes & Feres, Pronematus sp., Iphiseiodes zuluagai Denmark & Muma and Euseius citrifolius Denmark & Muma. Among the spontaneous euphorbiaceous, predatory mites were abundantly found on C. hirta and E. heterophylla, mainly Pronematus sp. and E. citrifolius, suggesting that these plants could be important in the maintenance of these predators in the rubber tree cultivation areas. However, plants that can shelter predators and at the same time exert strong competition (nutrients, water etc) to rubber trees, can not be recommended for pest management programs. Studies about competition between rubber trees and spontaneous plants need to be conducted for feasible efficient programs of environmental management, aiming at the control of pest mites of rubber tree.

  16. SIA "Statoil Fuel & Retail Latvia" komunikācijas sociālajos medijos; klientu uzrunāšana un uzklausīšana

    OpenAIRE

    Černova, Egita

    2013-01-01

    Bakalaura darbā "SIA "Statoil Fuel & Retail Latvia" komunikācijas sociālajos medijos; klientu uzrunāšana un uzklausīšana" tika pētīta uzņēmuma komunikācija sociālajos tīklos - komunicēšanas veids, identificējot sociālo tīklu lietotāju viedokli par to. Darba mērķis izpētīt „Statoil” komunikāciju sociālajos medijos un secinājumus piedāvāt kā ierosinājumus uzņēmuma komunikācijas pilnveidošanai. Darba teorētisko daļu veido nodaļas par Gruniga sabiedrisko attiecību komunikācijas modeļiem, so...

  17. SIA Silvanols mārketinga komunikācijas

    OpenAIRE

    Zvaigznīte-Gudermane, Eva

    2008-01-01

    Maģistra darba iztirzājuma sastāvā ir sešas nodaļas. Pirmā aplūko uzņēmuma darbības īpatnības un tā produkcijas raksturojumu, otrā – analizē uzņēmuma ārējo vidi, trešā – izvirza mārketinga komunikāciju stratēģiju un veic pētījumu par tās atbilstību, ceturtā – veic piemērotāko mediju izvēli, piektā – analizē reklāmas kampaņā ietverto mediju izmaksas, sestā – sniedz priekšstatu par reālu vizuālu reklāmu izvēlētajos medijos. Lai maģistra darbs būtu pārskatāms, tajā iekļautas sešas nodaļas, 8...

  18. Pamatlīdzekļu uzskaite un analīze uzņēmumā „LT”

    OpenAIRE

    Strazdiņa, Elīna

    2014-01-01

    Maģistra darba temats-Pamatlīdzekļu uzskaite un analīze uzņēmumā „LT” Darba hipotēze: pamatlīdzekļu uzskaites pilnveidošana palīdzēs uzņēmumam „LT” precīzāk novērtēt savu finansiālo stāvokli un viņa rīcībā esošos resursus. Darba mērķis: izpētīt uzņēmuma „LT” pamatlīdzekļu uzskaiti un veikt to analīzi, lai izstrādātu priekšlikumus pamatlīdzekļu uzskaites pilnveidošanai. Darba rezultāti: uzņēmuma „LT” pamatlīdzekļu sastāvā tiek iekļauti iegūldījuma īpašumi; neto apgrozījumā tiek uzrādī...

  19. Phytoseiid mites from tropical fruit trees in Bahia State, Brazil (Acari, Phytoseiidae).

    Science.gov (United States)

    de Souza, Izabel Vieira; Sá Argolo, Poliane; Júnior, Manoel Guedes Correa Gondim; de Moraes, Gilberto José; Bittencourt, Maria Aparecida Leão; Oliveira, Anibal Ramadan

    2015-01-01

    The cultivation of tropical fruit trees has grown considerably in the state of Bahia, northeastern Brazil. Some of these have been severely attacked by phytophagous mites, which are usually controlled by the use of chemical pesticides. However, there is today a growing interest for the adoption of less aggressive measures of pest control, as for example the use of predatory mites. Most of the plant-inhabiting predatory mites belong to the family Phytoseiidae. The objective of this paper is to report the phytoseiid species found in an intensive survey conducted on cultivated tropical fruit trees in fifteen localities of the southern coast of Bahia. Measurements of relevant morphological characters are provided for each species, to complement the understanding of the morphological variation of these species. Twenty-nine species of sixteen genera were identified. A key was elaborated to assist in the separation of these species. Fifteen species are reported for the first time in the state, raising to sixty-six the number of species of this family now known from Bahia. Seventy-two percent of the species collected belong to Amblyseiinae, followed by Typhlodrominae (21%) and Phytoseiinae (7%). The most diverse genus was Amblyseius. Amblyseius operculatus De Leon was the most frequent and abundant species. Studies should be conducted to evaluate the possible role of the most common predators as control agents of the phytophagous mites co-occurring with them.

  20. Acaricides and predatory mites against the begonia mite, Polyphagotarsonemus latus (Acari: Tarsonemidae), on Hedera helix.

    Science.gov (United States)

    Audenaert, Joachim; Vissers, Marc; Haleydt, Bart; Verhoeven, Ruth; Goossens, Frans; Gobin, Bruno

    2009-01-01

    In recent years, the begonia mite (Polyphagotarsonemus lotus) has become an important threat to different ornamental cultures in warm greenhouses. At present there are no professional plant protection products registered in Belgium for the control of mites of the Tarsonemidae family. In a screening trial, we evaluated the efficacy of a range of different acaricides: abamectin, milbemectin, pyridaben, spirodiclofen. Based on the results of the screening trial several products were selected for a full efficacy trial following EPPO guidelines. The best control results were obtained with two products from the avermectine group: abamectin and milbemectin. As growers currently have to rely solely on the use of natural enemies there is a strong need for practical evaluation of efficacies of the various predatory mite species (Amblyseius swirskii, A. cucumeris, A. andersoni) used in biological mite control. In a series of experiments, we screened the use of different species of predatory mites. The first efficacy trials on heavily infested plants at different rates of dosage and under different circumstances (temperature, dose rate, application technique) were started in May 2008. In these experiments Amblyseius swirskii showed good efficacy. But temperature was the limiting factor: the predatory mite needed a minimal temperature of 18 degrees C to obtain good results. Further research is necessary to search for predatory mites that can be used in winter conditions (lower temperatures, less light).

  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

    Directory of Open Access Journals (Sweden)

    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. Darbinieku iesaistes aptaujas TeamPulse™ ticamība un validitāte latviešu versijā

    OpenAIRE

    Kelberga, Anna

    2015-01-01

    Pētījuma mērķis bija adaptēt latviešu valodā aptauju TeamPulse™, kas mēra darbinieku iesaisti. Šī darba ietvaros tika veikta aptaujas TeamPulse™ turpmāka izpēte plašākā un daudzveidīgākā izlasē. Kopā analizētas 106 aizpildītas anketas no trim dažādiem uzņēmumiem – bankas, ražošanas uzņēmuma un augstskolas. Tika izmantota arī aptaujas “Iesaiste darbā” (UWES, Schaufeli un Baker, 2006) pilnā versija, lai detalizētāk noteiktu abu aptauju komponentu korelāciju. Pamatojoties uz adaptācijas psih...

  3. ERP sistēmas ieviešana

    OpenAIRE

    Proskurins, Aleksandrs

    2008-01-01

    Šajā darbā tika apskatīta informācijas sistēmu klasifikācija, uzņēmuma resursu plānošanas sistēmas (ERP) definīcija un tās vieta IS klasifikācijā. Tika apskatīti ERP sistēmu ieviešanas teorētiskie aspekti, izstrādes un pielāgošanas specifika, kā arī tika izanalizēti vairāki ERP sistēmas ieviešanas projekti Latvijas uzņēmumos.

  4. Constitutive and Operational Variation of Learning in Foraging Predatory Mites.

    Science.gov (United States)

    Seiter, Michael; Schausberger, Peter

    2016-01-01

    Learning is widely documented across animal taxa but studies stringently scrutinizing the causes of constitutive or operational variation of learning among populations and individuals are scarce. The ability to learn is genetically determined and subject to constitutive variation while the performance in learning depends on the immediate circumstances and is subject to operational variation. We assessed variation in learning ability and performance of plant-inhabiting predatory mites, Amblyseius swirskii, caused by population origin, rearing diet, and type of experience. Using an early learning foraging paradigm, we determined that homogeneous single prey environments did not select for reduced learning ability, as compared to natural prey-diverse environments, whereas a multi-generational pollen diet resulted in loss of learning, as compared to a diet of live prey. Associative learning produced stronger effects than non-associative learning but both types of experience produced persistent memory. Our study represents a key example of environmentally caused variation in learning ability and performance.

  5. Phytoseiidae (Acari: Mesostigmata) from natural ecosystems in the State of São Paulo, Brazil.

    Science.gov (United States)

    De Moraes, Gilberto José; Barbosa, Marina Ferraz De Camargo; De Castro, Tatiane Marie Martins Gomes

    2013-01-01

    This work describes the results of a study of the phytoseiid mites collected from plants in two natural ecosystems in the State of São Paulo, Brazil-Cerrado and Atlantic Forest. In this study, 40 phytoseiid species are reported. Measurements of different structures are given for species for which measurements for the respective São Paulo populations were not previously provided. This study also includes the description of two new genera, Breviseius g. n. and Serraseius g. n., and ten new species, Amblydromalus macroatrium n. sp., Amblyseius atlanticus n. sp., Breviseius sennae n. sp., Cocoseius paucisetis n. sp., Proprioseiospsis pariquerassuensis n. sp., Serraseius caicara n. sp., Typhlodromalus ingae n. sp., Typhlodromalus feresisimilis n. sp., Typhlodromips corniformis n. sp. and Typhlodromips robustisetus n. sp.

  6. Constitutive and Operational Variation of Learning in Foraging Predatory Mites

    Science.gov (United States)

    Seiter, Michael

    2016-01-01

    Learning is widely documented across animal taxa but studies stringently scrutinizing the causes of constitutive or operational variation of learning among populations and individuals are scarce. The ability to learn is genetically determined and subject to constitutive variation while the performance in learning depends on the immediate circumstances and is subject to operational variation. We assessed variation in learning ability and performance of plant-inhabiting predatory mites, Amblyseius swirskii, caused by population origin, rearing diet, and type of experience. Using an early learning foraging paradigm, we determined that homogeneous single prey environments did not select for reduced learning ability, as compared to natural prey-diverse environments, whereas a multi-generational pollen diet resulted in loss of learning, as compared to a diet of live prey. Associative learning produced stronger effects than non-associative learning but both types of experience produced persistent memory. Our study represents a key example of environmentally caused variation in learning ability and performance. PMID:27814380

  7. Egg hatching response to a range of ultraviolet-B (UV-B) radiation doses for four predatory mites and the herbivorous spider mite Tetranychus urticae.

    Science.gov (United States)

    Koveos, Dimitrios S; Suzuki, Takeshi; Terzidou, Anastasia; Kokkari, Anastasia; Floros, George; Damos, Petros; Kouloussis, Nikos A

    2017-01-01

    Egg hatchability of four predatory mites-Phytoseiulus persimilis Athias-Henriot, Iphiseius [Amblyseius] degenerans Berlese, Amblyseius swirskii Athias-Henriot, and Euseius finlandicus Oudemans (Acari: Phytoseiidae)-and the spider mite Tetranychus urticae Koch (Acari: Tetranychidae) was determined under various UV-B doses either in constant darkness (DD) or with simultaneous irradiation using white light. Under UV-B irradiation and DD or simultaneous irradiation with white light, the predator's eggs hatched in significantly lower percentages than in the control non-exposed eggs, which indicates deleterious effects of UV-B on embryonic development. In addition, higher hatchability percentages were observed under UV-B irradiation and DD in eggs of the predatory mites than in eggs of T. urticae. This might be caused by a higher involvement of an antioxidant system, shield effects by pigments or a mere shorter duration of embryonic development in predatory mites than in T. urticae, thus avoiding accumulative effects of UV-B. Although no eggs of T. urticae hatched under UV-B irradiation and DD, variable hatchability percentages were observed under simultaneous irradiation with white light, which suggests the involvement of a photoreactivation system that reduces UV-B damages. Under the same doses with simultaneous irradiation with white light, eggs of T. urticae displayed higher photoreactivation and were more tolerant to UV-B than eggs of the predatory mites. Among predators variation regarding the tolerance to UV-B effects was observed, with eggs of P. persimilis and I. degenerans being more tolerant to UV-B radiation than eggs of A. swirskii and E. finlandicus.

  8. Korporatīvā kultūra, komunikācijas procesi un darbinieku lojalitāte tirdzniecības uzņēmumā X

    OpenAIRE

    Vīra, Ilze

    2009-01-01

    Bakalaura darba tēma ir „Korporatīvā kultūra, komunikācijas procesi un darbinieku lojalitāte tirdzniecības uzņēmumā X”. Darba mērķis ir izpētīt Uzņēmuma X komunikāciju procesus, analizēt organizācijas kultūru un darbinieku lojalitāti. Darbs sastāv no teorētiskā un praktiskās daļas. Pirmajā nodaļā tiek apskatīts komunikācijas process un starplīmeņu komunikācijas veidi, tiek skaidrots organizāciju kultūras jēdziens, plašāk pievēršoties dažādu organizācijas kultūru definīciju apskata...

  9. Diversidade de ácaros (Acari, Arachnida em seringueiras (Hevea brasiliensis Muell. Arg., Euphorbiaceae na região noroeste do Estado de São Paulo, Brasil Mites diversity (Acari, Arachnida from rubber tree (Hevea brasiliensis Muell. Arg., Euphorbiaceae in Northwestern of São Paulo State, Brazil

    Directory of Open Access Journals (Sweden)

    Reinaldo J.F. Feres

    2002-03-01

    Full Text Available The mites of three rubber tree cultures (Cedral, Pindorama and Taquaritinga in order to determine the abundance of populations, the richness, the diversity and the degree of similarity among the communities was studied. Twenty one species were found, five of which were common to the three cultures. The richness and the abundance were greatest at the beginning of the dry season. The composition of communities differed probably as consequence of the kind of neighboring vegetation to each area, and because of the acaricid pulverization on the culture of Taquaritinga, reductng the richness of mite species in that area. The influence of neighboring vegetation can be shown by the occurrence of Iphiseiodes zuluagui Denmark & Muma, 1972, a common species to citrus trees, on neighboring rubber trees in Taquaritinga, and Tenuipalpus heveae Baker, 1945, a common species on rubber trees, on a coffee culture neighbor to the rubber trees of Pindorama. This data suggests that mites move among neighbor cultures, and can be an importam factor towards pest management and control. The diversity was small on the three cultures, as a result of the occurrence of one dominam species on each area, Calacarus heveae Feres, 1992 or T. heveae, which are considered pests of the rubber tree. The small diversity and the occurrence of dominant species are patterns expected in monocultures, systems with small environmental heterogeneity.

  10. Žurnāla SHAPE pārpozicionēšanas stratēģijas problēmas un risinājumi.

    OpenAIRE

    Nikodemusa, Zane

    2013-01-01

    Maģistra darba tēma ir „Žurnāla SHAPE pārpozicionēšanas stratēģijas problēmas un risinājumi”. Maģistra darba mērķis ir izpētīt žurnāla SHAPE pārpozicionēšanas stratēģiju, tās ieguvumus un zaudējumus no uzņēmuma skatu punkta, kā arī ietekmējošos faktorus un risinājumus turpmākai tirgus pozīcijas stiprināšanai. Darba gaitā autore izmanto dažādas informācijas apkopošanas un analīzes metodes. Teorētiskās daļas veidošanai darba autore izmantoja literatūras referatīvās analīzes metodi. Informāci...

  11. Zīmola "Laima" preču sortimenta analīze un tā pilnveidošanas iespējas segmentēšanas aspektā.

    OpenAIRE

    Krama, Elīna

    2015-01-01

    Pētījuma tēma ir „Zīmola „Laima” preču sortimenta analīze un tā pilnveidošanas iespējas segmentēšanas aspektā”. Darba mērķis - pamatojoties uz teorētiskajām atziņām, uzņēmuma „Laima” klientu aptaujas un intervijas rezultātiem, izpētīt zīmola „Laima” produktu sortimenta pilnveidošanas iespējas, novērtēt produktu sortimentu un tā īpašības, atklāt nepilnības tirgus segmentēšanas aspektā un sniegt priekšlikumus pilnveidošanai. 1.nodaļā sniegts ieskats teorētiskos jautājumos par produktu un...

  12. Projekts Zvanu centra SIA "Transcom WOrld Wide Latvia" izveidošana

    OpenAIRE

    Kuzmina, Sanita

    2009-01-01

    Latvijas ekonomikas un tirgus stabilizēšanai ir nepieciešamība pēc jaunu un ilgtermiņā darbojošos uzņēmumu veidošanās. Jaunu uzņēmumu veidošanās palielina kopējo pievienoto vērtību valstī un nodrošina jaunas darbavietas. Katram uzņēmumam uzsākot saimniecisko darbību ir nepieciešama informācija par tirgu un tā iespējām nākotnē, novērtēt savas finanšu iespējas, kā arī materiālo resursu nodrošinājumu, tāpēc svarīgs posms ir šo resursu efektīva izmantošana uzņēmuma darbības procesā. Uzņēmē...

  13. Darba organizācija A/S „Latvijas autoceļu uzturētājs”, Valmieras ceļu rajons, Cēsu nodaļā un tās pilnveidošanas virzieni

    OpenAIRE

    Majore, Madara

    2013-01-01

    Bakalaura darba mērķis ir novērtēt darba organizācijas līmeni Cēsu nodaļā un izstrādāt priekšlikumus tās pilnveidošanai. Darba mērķu sasniegšanai autore ir izvirzījusi uzdevumus: analizēt Cēsu nodaļas darba saturu un darba īpatnības, noskaidrot darba organizācijas lomu mūsdienu uzņēmumā, novērtēt darba dalīšanu un darba apstākļus Cēsu nodaļā un analizēt profesionālās attīstības vadīšanu Cēsu nodaļā un izstrādāt tās pilnveidošanas virzienus. Darbā autore raksturo uzņēmuma darbības saturu...

  14. Vietnes optimizācijas stratēģija meklētājprogrammu reitinga paaugstināšanai

    OpenAIRE

    Grišāne, Lāsma

    2012-01-01

    Maģistra darba izvēlētā tēma ir „Vietnes optimizācijas stratēģija meklētājprogrammu reitinga paaugstināšanai” (turpmāk tekstā SEO stratēģija). Maģistra darba mērķis ir izpētīt SEO izmantošanas iespējas vietņu popularizēšanai, reitinga paaugstināšanai un izstrādāt piemērotu SEO stratēģiju konkrētam uzņēmumam. Vietnes optimizācijas stratēģijas izstrāde meklētājprogrammu reitinga paaugstināšanai ir nozīmīga uzņēmuma reklāmas nodrošināšanai. Pirmkārt, īstenojot SEO stratēģiju tiek nodrošināta ...

  15. Darbinieku apmierinātību ietekmējošo faktoru novērtējums uzņēmumā AS „Cēsu alus”.

    OpenAIRE

    Petroviča, Lelde

    2013-01-01

    Maģistra darba temats ir „Darbinieku apmierinātību ietekmējošo faktoru novērtējums uzņēmumā AS „Cēsu alus””. Darba mērķis: izpētīt darbinieku apmierinātību ar darbu ietekmējošos faktorus uzņēmumā AS „Cēsu alus” un izstrādāt priekšlikumus apmierinātības ar darbu paaugstināšanai. Darba pirmajā daļā tiek aplūkoti teorētiskie aspekti par apmierinātību ar darbu būtību, uzmanību vēršot, apmierinātības ietekmei uz uzņēmuma darbību un to ietekmējošiem faktoriem. Otrajā daļā ar interviju palīdzību tie...

  16. B2B elektroniskās komercijas potenciāls un attīstības perspektīvas Latvijā

    OpenAIRE

    Ķigule, Monta

    2012-01-01

    Bakalaura darbs „B2B elektroniskās komercijas potenciāls un attīstības perspektīvas Latvijā” mērķis ir sniegt lasītājiem priekšstatu par e-komerciju priekšrocībām uzņēmējdarbībā, un kāds ir uzņēmumu skatījums uz B2B attīstību Latvijas un uzņēmuma ietvaros. Darbs sastāv no trim galvenajām daļām. Pirmajā daļā tiek aplūkots B2B kā e-komercijas forma.. Darba otrajā daļā mēs apskatījām B2B modeļus, un tiem piemītošās īpašības un raksturu. Trešās daļas ietvaros tika apskatīti pieejamies statisti...

  17. A new communication approach for customer relationship management in the hotel industry

    OpenAIRE

    Heiden, Sandra Marianne

    2014-01-01

    “Visas uzņēmējdarbības pamatā ir attiecības. Uzņēmumam tikai tās saviem klientiem jāpadara uztveramas un jēgpilnas - ar nosacījumu, ka klienti to vēlas” (Grönroos 2007, 24 lpp.). Uzņēmuma spēja palielināt apgrozījumu, izmantojot efektīvu vadību attiecībās ar klientiem ir ļoti svarīga, lai pārvarētu ekonomisko nenoteiktību visā pasaulē. Jaunās digitālo mediju īpašības kopā ar milzīgu alternatīvo paņēmienu klāstu saziņai ar klientiem ir radījušas vadītājiem un akadēmiķiem gan iespējas, gan prob...

  18. Jaunā komunikācijas pieeja klientu attiecību pārvaldībai viesnīcu nozarē

    OpenAIRE

    Sandra Marianne Heiden

    2014-01-01

    ANOTĀCIJA “Visas uzņēmējdarbības pamatā ir attiecības. Uzņēmumam tikai tās saviem klientiem jāpadara uztveramas un jēgpilnas - ar nosacījumu, ka klienti to vēlas” (Grönroos 2007, 24 lpp.). Uzņēmuma spēja palielināt apgrozījumu, izmantojot efektīvu vadību attiecībās ar klientiem ir ļoti svarīga, lai pārvarētu ekonomisko nenoteiktību visā pasaulē. Jaunās digitālo mediju īpašības kopā ar milzīgu alternatīvo paņēmienu klāstu saziņai ar klientiem ir radījušas vadītājiem un akadēmiķiem gan iespē...

  19. Biznesa efektivitātes uzlabošanas iespējas uzņēmumā SIA "3K MANAGEMENT"

    OpenAIRE

    Penēze, Aija

    2015-01-01

    Aizvien lielāka nozīmē mūsdienās tiek pievērsta atšķirībai starp uzņēmumu vadīšanu un efektīvu uzņēmumu vadīšanu. Uzņēmēji organizācijas vadīšanā savu uzmanību koncentrē uz to, kā uzņēmums preces un pakalpojumus piedāvā, kāds ir tā tēls, kā tiek organizēta uzņēmuma darbība un kultūra. Uzņēmumi arvien vairāk vērš uzmanību uz uzņēmumu vadīšanu ar pievienoto vērtību, tas ir, efektivitātes uzlabošanu. Aijas Penēzes maģistra darba tēma ir „Biznesa efektivitātes uzlabošanas iespējas uzņēmumā SI...

  20. Measurements of prompt charm production cross-sections in $pp$ collisions at $\\sqrt{s}$ = 13 TeV

    CERN Document Server

    Aaij, Roel; Adeva, Bernardo; Adinolfi, Marco; Affolder, Anthony; Ajaltouni, Ziad; Akar, Simon; Albrecht, Johannes; Alessio, Federico; Alexander, Michael; Ali, Suvayu; Alkhazov, Georgy; Alvarez Cartelle, Paula; Alves Jr, Antonio Augusto; Amato, Sandra; Amerio, Silvia; Amhis, Yasmine; An, Liupan; Anderlini, Lucio; Anderson, Jonathan; Andreassi, Guido; Andreotti, Mirco; Andrews, Jason; Appleby, Robert; Aquines Gutierrez, Osvaldo; Archilli, Flavio; d'Argent, Philippe; Artamonov, Alexander; Artuso, Marina; Aslanides, Elie; Auriemma, Giulio; Baalouch, Marouen; Bachmann, Sebastian; Back, John; Badalov, Alexey; Baesso, Clarissa; Baldini, Wander; Barlow, Roger; Barschel, Colin; Barsuk, Sergey; Barter, William; Batozskaya, Varvara; Battista, Vincenzo; Bay, Aurelio; Beaucourt, Leo; Beddow, John; Bedeschi, Franco; Bediaga, Ignacio; Bel, Lennaert; Bellee, Violaine; Belloli, Nicoletta; Belyaev, Ivan; Ben-Haim, Eli; Bencivenni, Giovanni; Benson, Sean; Benton, Jack; Berezhnoy, Alexander; Bernet, Roland; Bertolin, Alessandro; Bettler, Marc-Olivier; van Beuzekom, Martinus; Bien, Alexander; Bifani, Simone; Billoir, Pierre; Bird, Thomas; Birnkraut, Alex; Bizzeti, Andrea; Blake, Thomas; Blanc, Frédéric; Blouw, Johan; Blusk, Steven; Bocci, Valerio; Bondar, Alexander; Bondar, Nikolay; Bonivento, Walter; Borghi, Silvia; Borsato, Martino; Bowcock, Themistocles; Bowen, Espen Eie; Bozzi, Concezio; Braun, Svende; Britsch, Markward; Britton, Thomas; Brodzicka, Jolanta; Brook, Nicholas; Buchanan, Emma; Burr, Christopher; Bursche, Albert; Buytaert, Jan; Cadeddu, Sandro; Calabrese, Roberto; Calvi, Marta; Calvo Gomez, Miriam; Campana, Pierluigi; Campora Perez, Daniel; Capriotti, Lorenzo; Carbone, Angelo; Carboni, Giovanni; Cardinale, Roberta; Cardini, Alessandro; Carniti, Paolo; Carson, Laurence; Carvalho Akiba, Kazuyoshi; Casse, Gianluigi; Cassina, Lorenzo; Castillo Garcia, Lucia; Cattaneo, Marco; Cauet, Christophe; Cavallero, Giovanni; Cenci, Riccardo; Charles, Matthew; Charpentier, Philippe; Chefdeville, Maximilien; Chen, Shanzhen; Cheung, Shu-Faye; Chiapolini, Nicola; Chrzaszcz, Marcin; Cid Vidal, Xabier; Ciezarek, Gregory; Clarke, Peter; Clemencic, Marco; Cliff, Harry; Closier, Joel; Coco, Victor; Cogan, Julien; Cogneras, Eric; Cogoni, Violetta; Cojocariu, Lucian; Collazuol, Gianmaria; Collins, Paula; Comerma-Montells, Albert; Contu, Andrea; Cook, Andrew; Coombes, Matthew; Coquereau, Samuel; Corti, Gloria; Corvo, Marco; Couturier, Benjamin; Cowan, Greig; Craik, Daniel Charles; Crocombe, Andrew; Cruz Torres, Melissa Maria; Cunliffe, Samuel; Currie, Robert; D'Ambrosio, Carmelo; Dall'Occo, Elena; Dalseno, Jeremy; David, Pieter; Davis, Adam; De Aguiar Francisco, Oscar; De Bruyn, Kristof; De Capua, Stefano; De Cian, Michel; De Miranda, Jussara; De Paula, Leandro; De Simone, Patrizia; Dean, Cameron Thomas; Decamp, Daniel; Deckenhoff, Mirko; Del Buono, Luigi; Déléage, Nicolas; Demmer, Moritz; Derkach, Denis; Deschamps, Olivier; Dettori, Francesco; Dey, Biplab; Di Canto, Angelo; Di Ruscio, Francesco; Dijkstra, Hans; Donleavy, Stephanie; Dordei, Francesca; Dorigo, Mirco; Dosil Suárez, Alvaro; Dossett, David; Dovbnya, Anatoliy; Dreimanis, Karlis; Dufour, Laurent; Dujany, Giulio; Dupertuis, Frederic; Durante, Paolo; Dzhelyadin, Rustem; Dziurda, Agnieszka; Dzyuba, Alexey; Easo, Sajan; Egede, Ulrik; Egorychev, Victor; Eidelman, Semen; Eisenhardt, Stephan; Eitschberger, Ulrich; Ekelhof, Robert; Eklund, Lars; El Rifai, Ibrahim; Elsasser, Christian; Ely, Scott; Esen, Sevda; Evans, Hannah Mary; Evans, Timothy; Falabella, Antonio; Färber, Christian; Farley, Nathanael; Farry, Stephen; Fay, Robert; Ferguson, Dianne; Fernandez Albor, Victor; Ferrari, Fabio; Ferreira Rodrigues, Fernando; Ferro-Luzzi, Massimiliano; Filippov, Sergey; Fiore, Marco; Fiorini, Massimiliano; Firlej, Miroslaw; Fitzpatrick, Conor; Fiutowski, Tomasz; Fohl, Klaus; Fol, Philip; Fontana, Marianna; Fontanelli, Flavio; Forshaw, Dean Charles; Forty, Roger; Frank, Markus; Frei, Christoph; Frosini, Maddalena; Fu, Jinlin; Furfaro, Emiliano; Gallas Torreira, Abraham; Galli, Domenico; Gallorini, Stefano; Gambetta, Silvia; Gandelman, Miriam; Gandini, Paolo; Gao, Yuanning; García Pardiñas, Julián; Garra Tico, Jordi; Garrido, Lluis; Gascon, David; Gaspar, Clara; Gauld, Rhorry; Gavardi, Laura; Gazzoni, Giulio; Gerick, David; Gersabeck, Evelina; Gersabeck, Marco; Gershon, Timothy; Ghez, Philippe; Gianì, Sebastiana; Gibson, Valerie; Girard, Olivier Göran; Giubega, Lavinia-Helena; Gligorov, V.V.; Göbel, Carla; Golubkov, Dmitry; Golutvin, Andrey; Gomes, Alvaro; Gotti, Claudio; Grabalosa Gándara, Marc; Graciani Diaz, Ricardo; Granado Cardoso, Luis Alberto; Graugés, Eugeni; Graverini, Elena; Graziani, Giacomo; Grecu, Alexandru; Greening, Edward; Gregson, Sam; Griffith, Peter; Grillo, Lucia; Grünberg, Oliver; Gui, Bin; Gushchin, Evgeny; Guz, Yury; Gys, Thierry; Hadavizadeh, Thomas; Hadjivasiliou, Christos; Haefeli, Guido; Haen, Christophe; Haines, Susan; Hall, Samuel; Hamilton, Brian; Han, Xiaoxue; Hansmann-Menzemer, Stephanie; Harnew, Neville; Harnew, Samuel; Harrison, Jonathan; He, Jibo; Head, Timothy; Heijne, Veerle; Hennessy, Karol; Henrard, Pierre; Henry, Louis; van Herwijnen, Eric; Heß, Miriam; Hicheur, Adlène; Hill, Donal; Hoballah, Mostafa; Hombach, Christoph; Hulsbergen, Wouter; Humair, Thibaud; Hussain, Nazim; Hutchcroft, David; Hynds, Daniel; Idzik, Marek; Ilten, Philip; Jacobsson, Richard; Jaeger, Andreas; Jalocha, Pawel; Jans, Eddy; Jawahery, Abolhassan; Jing, Fanfan; John, Malcolm; Johnson, Daniel; Jones, Christopher; Joram, Christian; Jost, Beat; Jurik, Nathan; Kandybei, Sergii; Kanso, Walaa; Karacson, Matthias; Karbach, Moritz; Karodia, Sarah; Kecke, Matthieu; Kelsey, Matthew; Kenyon, Ian; Kenzie, Matthew; Ketel, Tjeerd; Khairullin, Egor; Khanji, Basem; Khurewathanakul, Chitsanu; Klaver, Suzanne; Klimaszewski, Konrad; Kochebina, Olga; Kolpin, Michael; Komarov, Ilya; Koopman, Rose; Koppenburg, Patrick; Kozeiha, Mohamad; Kravchuk, Leonid; Kreplin, Katharina; Kreps, Michal; Krocker, Georg; Krokovny, Pavel; Kruse, Florian; Krzemien, Wojciech; Kucewicz, Wojciech; Kucharczyk, Marcin; Kudryavtsev, Vasily; Kuonen, Axel Kevin; Kurek, Krzysztof; Kvaratskheliya, Tengiz; Lacarrere, Daniel; Lafferty, George; Lai, Adriano; Lambert, Dean; Lanfranchi, Gaia; Langenbruch, Christoph; Langhans, Benedikt; Latham, Thomas; Lazzeroni, Cristina; Le Gac, Renaud; van Leerdam, Jeroen; Lees, Jean-Pierre; Lefèvre, Regis; Leflat, Alexander; Lefrançois, Jacques; Lemos Cid, Edgar; Leroy, Olivier; Lesiak, Tadeusz; Leverington, Blake; Li, Yiming; Likhomanenko, Tatiana; Liles, Myfanwy; Lindner, Rolf; Linn, Christian; Lionetto, Federica; Liu, Bo; Liu, Xuesong; Loh, David; Longstaff, Iain; Lopes, Jose; Lucchesi, Donatella; Lucio Martinez, Miriam; Luo, Haofei; Lupato, Anna; Luppi, Eleonora; Lupton, Oliver; Lusiani, Alberto; Machefert, Frederic; Maciuc, Florin; Maev, Oleg; Maguire, Kevin; Malde, Sneha; Malinin, Alexander; Manca, Giulia; Mancinelli, Giampiero; Manning, Peter Michael; Mapelli, Alessandro; Maratas, Jan; Marchand, Jean François; Marconi, Umberto; Marin Benito, Carla; Marino, Pietro; Marks, Jörg; Martellotti, Giuseppe; Martin, Morgan; Martinelli, Maurizio; Martinez Santos, Diego; Martinez Vidal, Fernando; Martins Tostes, Danielle; Massafferri, André; Matev, Rosen; Mathad, Abhijit; Mathe, Zoltan; Matteuzzi, Clara; Mauri, Andrea; Maurin, Brice; Mazurov, Alexander; McCann, Michael; McCarthy, James; McNab, Andrew; McNulty, Ronan; Meadows, Brian; Meier, Frank; Meissner, Marco; Melnychuk, Dmytro; Merk, Marcel; Michielin, Emanuele; Milanes, Diego Alejandro; Minard, Marie-Noelle; Mitzel, Dominik Stefan; Molina Rodriguez, Josue; Monroy, Ignacio Alberto; Monteil, Stephane; Morandin, Mauro; Morawski, Piotr; Mordà, Alessandro; Morello, Michael Joseph; Moron, Jakub; Morris, Adam Benjamin; Mountain, Raymond; Muheim, Franz; Müller, Dominik; Müller, Janine; Müller, Katharina; Müller, Vanessa; Mussini, Manuel; Muster, Bastien; Naik, Paras; Nakada, Tatsuya; Nandakumar, Raja; Nandi, Anita; Nasteva, Irina; Needham, Matthew; Neri, Nicola; Neubert, Sebastian; Neufeld, Niko; Neuner, Max; Nguyen, Anh Duc; Nguyen, Thi-Dung; Nguyen-Mau, Chung; Niess, Valentin; Niet, Ramon; Nikitin, Nikolay; Nikodem, Thomas; Novoselov, Alexey; O'Hanlon, Daniel Patrick; Oblakowska-Mucha, Agnieszka; Obraztsov, Vladimir; Ogilvy, Stephen; Okhrimenko, Oleksandr; Oldeman, Rudolf; Onderwater, Gerco; Osorio Rodrigues, Bruno; Otalora Goicochea, Juan Martin; Otto, Adam; Owen, Patrick; Oyanguren, Maria Aranzazu; Palano, Antimo; Palombo, Fernando; Palutan, Matteo; Panman, Jacob; Papanestis, Antonios; Pappagallo, Marco; Pappalardo, Luciano; Pappenheimer, Cheryl; Parker, William; Parkes, Christopher; Passaleva, Giovanni; Patel, Girish; Patel, Mitesh; Patrignani, Claudia; Pearce, Alex; Pellegrino, Antonio; Penso, Gianni; Pepe Altarelli, Monica; Perazzini, Stefano; Perret, Pascal; Pescatore, Luca; Petridis, Konstantinos; Petrolini, Alessandro; Petruzzo, Marco; Picatoste Olloqui, Eduardo; Pietrzyk, Boleslaw; Pilař, Tomas; Pinci, Davide; Pistone, Alessandro; Piucci, Alessio; Playfer, Stephen; Plo Casasus, Maximo; Poikela, Tuomas; Polci, Francesco; Poluektov, Anton; Polyakov, Ivan; Polycarpo, Erica; Popov, Alexander; Popov, Dmitry; Popovici, Bogdan; Potterat, Cédric; Price, Eugenia; Price, Joseph David; Prisciandaro, Jessica; Pritchard, Adrian; Prouve, Claire; Pugatch, Valery; Puig Navarro, Albert; Punzi, Giovanni; Qian, Wenbin; Quagliani, Renato; Rachwal, Bartolomiej; Rademacker, Jonas; Rama, Matteo; Rangel, Murilo; Raniuk, Iurii; Rauschmayr, Nathalie; Raven, Gerhard; Redi, Federico; Reichert, Stefanie; Reid, Matthew; dos Reis, Alberto; Ricciardi, Stefania; Richards, Sophie; Rihl, Mariana; Rinnert, Kurt; Rives Molina, Vincente; Robbe, Patrick; Rodrigues, Ana Barbara; Rodrigues, Eduardo; Rodriguez Lopez, Jairo Alexis; Rodriguez Perez, Pablo; Roiser, Stefan; Romanovsky, Vladimir; Romero Vidal, Antonio; Ronayne, John William; Rotondo, Marcello; Rouvinet, Julien; Ruf, Thomas; Ruiz Valls, Pablo; Saborido Silva, Juan Jose; Sagidova, Naylya; Sail, Paul; Saitta, Biagio; Salustino Guimaraes, Valdir; Sanchez Mayordomo, Carlos; Sanmartin Sedes, Brais; Santacesaria, Roberta; Santamarina Rios, Cibran; Santimaria, Marco; Santovetti, Emanuele; Sarti, Alessio; Satriano, Celestina; Satta, Alessia; Saunders, Daniel Martin; Savrina, Darya; Schiller, Manuel; Schindler, Heinrich; Schlupp, Maximilian; Schmelling, Michael; Schmelzer, Timon; Schmidt, Burkhard; Schneider, Olivier; Schopper, Andreas; Schubiger, Maxime; Schune, Marie Helene; Schwemmer, Rainer; Sciascia, Barbara; Sciubba, Adalberto; Semennikov, Alexander; Serra, Nicola; Serrano, Justine; Sestini, Lorenzo; Seyfert, Paul; Shapkin, Mikhail; Shapoval, Illya; Shcheglov, Yury; Shears, Tara; Shekhtman, Lev; Shevchenko, Vladimir; Shires, Alexander; Siddi, Benedetto Gianluca; Silva Coutinho, Rafael; Silva de Oliveira, Luiz Gustavo; Simi, Gabriele; Sirendi, Marek; Skidmore, Nicola; Skwarnicki, Tomasz; Smith, Edmund; Smith, Eluned; Smith, Iwan Thomas; Smith, Jackson; Smith, Mark; Snoek, Hella; Sokoloff, Michael; Soler, Paul; Soomro, Fatima; Souza, Daniel; Souza De Paula, Bruno; Spaan, Bernhard; Spradlin, Patrick; Sridharan, Srikanth; Stagni, Federico; Stahl, Marian; Stahl, Sascha; Stefkova, Slavorima; Steinkamp, Olaf; Stenyakin, Oleg; Stevenson, Scott; Stoica, Sabin; Stone, Sheldon; Storaci, Barbara; Stracka, Simone; Straticiuc, Mihai; Straumann, Ulrich; Sun, Liang; Sutcliffe, William; Swientek, Krzysztof; Swientek, Stefan; Syropoulos, Vasileios; Szczekowski, Marek; Szumlak, Tomasz; T'Jampens, Stephane; Tayduganov, Andrey; Tekampe, Tobias; Teklishyn, Maksym; Tellarini, Giulia; Teubert, Frederic; Thomas, Christopher; Thomas, Eric; van Tilburg, Jeroen; Tisserand, Vincent; Tobin, Mark; Todd, Jacob; Tolk, Siim; Tomassetti, Luca; Tonelli, Diego; Topp-Joergensen, Stig; Torr, Nicholas; Tournefier, Edwige; Tourneur, Stephane; Trabelsi, Karim; Tran, Minh Tâm; Tresch, Marco; Trisovic, Ana; Tsaregorodtsev, Andrei; Tsopelas, Panagiotis; Tuning, Niels; Ukleja, Artur; Ustyuzhanin, Andrey; Uwer, Ulrich; Vacca, Claudia; Vagnoni, Vincenzo; Valenti, Giovanni; Vallier, Alexis; Vazquez Gomez, Ricardo; Vazquez Regueiro, Pablo; Vázquez Sierra, Carlos; Vecchi, Stefania; Velthuis, Jaap; Veltri, Michele; Veneziano, Giovanni; Vesterinen, Mika; Viaud, Benoit; Vieira, Daniel; Vieites Diaz, Maria; Vilasis-Cardona, Xavier; Volkov, Vladimir; Vollhardt, Achim; Volyanskyy, Dmytro; Voong, David; Vorobyev, Alexey; Vorobyev, Vitaly; Voß, Christian; de Vries, Jacco; Waldi, Roland; Wallace, Charlotte; Wallace, Ronan; Walsh, John; Wandernoth, Sebastian; Wang, Jianchun; Ward, David; Watson, Nigel; Websdale, David; Weiden, Andreas; Whitehead, Mark; Wilkinson, Guy; Wilkinson, Michael; Williams, Mark Richard James; Williams, Matthew; Williams, Mike; Williams, Timothy; Wilson, Fergus; Wimberley, Jack; Wishahi, Julian; Wislicki, Wojciech; Witek, Mariusz; Wormser, Guy; Wotton, Stephen; Wyllie, Kenneth; Xie, Yuehong; Xu, Zhirui; Yang, Zhenwei; Yu, Jiesheng; Yuan, Xuhao; Yushchenko, Oleg; Zangoli, Maria; Zavertyaev, Mikhail; Zhang, Liming; Zhang, Yanxi; Zhelezov, Alexey; Zhokhov, Anatoly; Zhong, Liang; Zucchelli, Stefano

    2016-03-22

    Production cross-sections of prompt charm mesons are measured with the first data from $pp$ collisions at the LHC at a centre-of-mass energy of $13\\,\\mathrm{TeV}$. The data sample corresponds to an integrated luminosity of $4.98 \\pm 0.19\\,\\mathrm{pb}^{-1}$ collected by the LHCb experiment. The production cross-sections of $D^{0}$, $D^{+}$, $D_{s}^{+}$, and $D^{*+}$ mesons are measured in bins of charm meson transverse momentum, $p_{\\mathrm{T}}$, and rapidity, $y$, and cover the range $0 < p_{\\mathrm{T}} < 15\\,\\mathrm{GeV}/c$ and $2.0 < y < 4.5$. The inclusive cross-sections for the four mesons, including charge conjugation, within the range of $1 < p_{\\mathrm{T}} < 8\\,\\mathrm{GeV}/c$ are found to be \\begin{align*} \\begin{array}{lcr} \\sigma(pp \\to D^{0} X) &=& 2460 \\pm \\phantom{1}3 \\pm 130\\,\\mu\\mathrm{b} \\\\ \\sigma(pp \\to D^{+} X) &=& 1000 \\pm \\phantom{1}3 \\pm 110\\,\\mu\\mathrm{b} \\\\ \\sigma(pp \\to D_{s}^{+} X) &=& 460 \\pm 13 \\pm 100\\,\\mu\\ma...

  1. Social familiarity reduces reaction times and enhances survival of group-living predatory mites under the risk of predation.

    Directory of Open Access Journals (Sweden)

    Markus Andreas Strodl

    Full Text Available Social familiarity, which is based on the ability to recognise familiar conspecific individuals following prior association, may affect all major life activities of group-living animals such as foraging, reproduction and anti-predator behaviours. A scarcely experimentally tested explanation why social familiarity is beneficial for group-living animals is provided by limited attention theory. Limited attention theory postulates that focusing on a given task, such as inspection and assessment of unfamiliar group members, has cognitive and associated physiological and behavioural costs with respect to the attention paid to other tasks, such as anti-predator vigilance and response. Accordingly, we hypothesised that social familiarity enhances the anti-predator success of group-living predatory mites, Phytoseiulus persimilis, confronted with an intraguild predator, the predatory mite Amblyseius andersoni.We videotaped and analysed the response of two P. persimilis larvae, held in familiar or unfamiliar pairs, to attacks by a gravid A. andersoni female, using the behavioural analyses software EthoVision Pro®. Familiar larvae were more frequently close together, reacted more quickly to predator attacks, survived more predator encounters and survived longer than unfamiliar larvae.In line with the predictions of limited attention theory, we suggest that social familiarity improves anti-predator behaviours because it allows prey to shift attention to other tasks rather than group member assessment.

  2. Management of apple orchards to conserve generalist phytoseiid mites suppresses two-spotted spider mite, Tetranychus urticae (Acari: Tetranychidae).

    Science.gov (United States)

    Funayama, Ken; Komatus, Michiyo; Sonoda, Shoji; Takahashi, Isao; Hara, Kazuko

    2015-01-01

    To improve the success of integrated pest management (IPM) in apple orchards, we investigated whether generalist phytoseiid mites have suppressed the occurrence of Tetranychus urticae. In Akita Prefecture, northern Japan, in 2012 and 2013, two types of experimental plot were compared. Conservation plots had been managed for the conservation of generalist phytoseiid mites by selective chemical spraying without mowing since 2009. Conventional plots were managed by non-selective chemical spraying with regular mowing. The conservation plots had significantly fewer T. urticae adult females per tree in both years. Two species of generalist phytoseiid mites-Typhlodromus vulgaris and Amblyseius tsugawai-were continuously present in the conservation plots, with only a few T. urticae. The conservation plots had significantly more A. tsugawai adult females in the undergrowth in both years, and significantly more T. vulgaris adult females on apple leaves in 2012. Typhlodromus vulgaris was continuously present in the conservation plots but was scarce from late May to early August in the conventional plots. In the presence of T. vulgaris, low numbers of T. urticae did not increase on apple leaves. These results indicate that the generalist phytoseiid mites serve as important biological control agents in IPM in apple orchards.

  3. Efficacy of indigenous predatory mites (Acari: Phytoseiidae) against the citrus rust mite Phyllocoptruta oleivora (Acari: Eriophyidae): augmentation and conservation biological control in Israeli citrus orchards.

    Science.gov (United States)

    Maoz, Yonatan; Gal, Shira; Argov, Yael; Domeratzky, Sylvie; Melamed, Eti; Gan-Mor, Samuel; Coll, Moshe; Palevsky, Eric

    2014-07-01

    The citrus rust mite (CRM), Phyllocoptruta oleivora (Acari: Eriophyidae) is a cosmopolitan key pest of citrus, inflicting severe economic damage if not controlled. In Israel, CRM damages all citrus cultivars. International regulation and increasing control failures of CRM led growers to seek sustainable biological control solutions such as acarine biological control agents. Laboratory studies conducted in Israel have indicated that the indigenous predator species Amblyseius swirskii, Iphiseius degenerans, Typhlodromus athiasae and Euseius scutalis (all Acari: Phytoseiidae) can potentially control CRM. Our general objective in the present study was to bridge the gap of knowledge between laboratory studies and the lack of control efficacy of these species in commercial orchards. Predator augmentation in the field showed that although predator populations increased immediately following releases they later decreased and did not affect CRM populations. When A. swirskii augmentation was combined with a series of maize pollen applications, A. swirskii populations were enhanced substantially and continuously but again CRM populations were not affected. Growth chamber studies with CRM-infested seedlings, with or without a maize pollen supplement, indicated that pollen provisioning led to population increase of E. scutalis and A. swirskii but only E. scutalis significantly lowered CRM populations. Control with E. scutalis was confirmed in the field on CRM infested seedlings with pollen provisioned by adjacent flowering Rhodes grass. While experiments in mature citrus orchard showed that pollen supplement usually increased predator populations they also indicated that other factors such as intraguild interactions and pesticide treatments should be taken into account when devising CRM biological control programs.

  4. Constitutive and Operational Variation of Learning in Foraging Predatory Mites.

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    Michael Seiter

    Full Text Available Learning is widely documented across animal taxa but studies stringently scrutinizing the causes of constitutive or operational variation of learning among populations and individuals are scarce. The ability to learn is genetically determined and subject to constitutive variation while the performance in learning depends on the immediate circumstances and is subject to operational variation. We assessed variation in learning ability and performance of plant-inhabiting predatory mites, Amblyseius swirskii, caused by population origin, rearing diet, and type of experience. Using an early learning foraging paradigm, we determined that homogeneous single prey environments did not select for reduced learning ability, as compared to natural prey-diverse environments, whereas a multi-generational pollen diet resulted in loss of learning, as compared to a diet of live prey. Associative learning produced stronger effects than non-associative learning but both types of experience produced persistent memory. Our study represents a key example of environmentally caused variation in learning ability and performance.

  5. An evaluation of three predatory mite species for the control of greenhouse whitefly (Trialeurodes vaporariorum).

    Science.gov (United States)

    Medd, Nathan C; GreatRex, Richard M

    2014-10-01

    Within integrated pest control programmes, the use of high mite inoculations to control hot spots of whitefly is desirable for many growers. In this experiment, two species of predatory mites established as commercial biological control agents, Typhlodromips montdorensis and Amblyseius swirskii (Acari: Phytoseiidae), were compared with another, more recently introduced species, Amblydromalus limonicus, for their ability to control dense populations of greenhouse whitefly (Trialeurodes vaporariorum) on cucumber plants (Cucumis sativus). Mite formulation type had a significant effect on the number of mites found on plants, but this did not correspond to increased whitefly control. Plots treated with A. limonicus or T. montdorensis, applied as loose product, had significantly reduced whitefly populations throughout the trial. Analysis showed that no species was observed more often on leaves with higher whitefly densities than on those with lower densities. No species was clearly identified as a suitable candidate for treatment of high-density whitefly colonies, but results suggest the highest level of predation in A. limonicus. Strategies for the effective use of these predatory mite species in control programmes are discussed. © 2014 Society of Chemical Industry.

  6. An entomopathogenic strain of Beauveria bassiana against Frankliniella occidentalis with no detrimental effect on the predatory mite Neoseiulus barkeri: evidence from laboratory bioassay and scanning electron microscopic observation.

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    Shengyong Wu

    Full Text Available Among 28 isolates of Beauveria bassiana tested for virulence against F. occidentalis in laboratory bioassays, we found strain SZ-26 as the most potent, causing 96% mortality in adults at 1×10(7 mL(-1conidia after 4 days. The effect of the strain SZ-26 on survival, longevity and fecundity of the predatory mite Neoseiulus (Amblyseius barkeri Hughes were studied under laboratory conditions. The bioassay results showed that the corrected mortalities were less than 4 and 8% at 10 days following inoculation of the adult and the larvae of the predator, respectively, with 1×10(7 conidia mL(-1 of SZ-26. Furthermore, no fungal hyphae were found in dead predators. The oviposition and postoviposition durations, longevity, and fecundity displayed no significant differences after inoculation with SZ-26 using first-instar larvae of F. occidentalis as prey in comparison with untreated predator. In contrast, the preoviposition durations were significantly longer. Observations with a scanning electron microscope, revealed that many conidia were attached to the cuticles of F. occidentalis at 2 h after treatment with germ tubes oriented toward cuticle at 24 h, penetration of the insect cuticle at 36 h, and finally, fungal colonization of the whole insect body at 60 h. In contrast, we never observed penetration of the predator's cuticle and conidia were shed gradually from the body, further demonstrating that B. bassiana strain SZ-26 show high toxicity against F. occidentalis but no pathogenicity to predatory mite.

  7. Biological control of thrips pests (Thysanoptera: Thripidae in a commercial greenhouse in Hungary

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    Farkas Péter

    2016-12-01

    Full Text Available Polyphagous thrips, like western flower thrips Frankliniella occidentalis and onion thrips Thrips tabaci, are major pests in various ornamental and vegetable crops in greenhouses throughout the world. In Hungary, both of these polyphagous thrips species frequently cause severe damage in many greenhouse crops, especially in commercial sweet pepper. Chemical control is not always feasible because of certain ecological characteristics of these thrips species. The commercially available phytoseiid predatory mites like Amblyseius swirskii and anthocorid flower bugs like Orius laevigatus are often used simultaneously for the biological control of severe thrips infestation in sweet pepper cultivation in Hungary. Our observations demonstrated that the polyphagous thrips assemblages were effectively controlled by the combined release of natural enemies, despite the fact that the establishment of O. laevigatus did not seem to be successful in the first year. Overall, the thrips population density remained below the economic threshold in both years. However, the low infestation level of thrips suggests that a single predator release strategy could be applied effectively and still maintain the thrips below the damage threshold in greenhouse sweet pepper.

  8. An entomopathogenic strain of Beauveria bassiana against Frankliniella occidentalis with no detrimental effect on the predatory mite Neoseiulus barkeri: evidence from laboratory bioassay and scanning electron microscopic observation.

    Science.gov (United States)

    Wu, Shengyong; Gao, Yulin; Zhang, Yaping; Wang, Endong; Xu, Xuenong; Lei, Zhongren

    2014-01-01

    Among 28 isolates of Beauveria bassiana tested for virulence against F. occidentalis in laboratory bioassays, we found strain SZ-26 as the most potent, causing 96% mortality in adults at 1×10(7) mL(-1)conidia after 4 days. The effect of the strain SZ-26 on survival, longevity and fecundity of the predatory mite Neoseiulus (Amblyseius) barkeri Hughes were studied under laboratory conditions. The bioassay results showed that the corrected mortalities were less than 4 and 8% at 10 days following inoculation of the adult and the larvae of the predator, respectively, with 1×10(7) conidia mL(-1) of SZ-26. Furthermore, no fungal hyphae were found in dead predators. The oviposition and postoviposition durations, longevity, and fecundity displayed no significant differences after inoculation with SZ-26 using first-instar larvae of F. occidentalis as prey in comparison with untreated predator. In contrast, the preoviposition durations were significantly longer. Observations with a scanning electron microscope, revealed that many conidia were attached to the cuticles of F. occidentalis at 2 h after treatment with germ tubes oriented toward cuticle at 24 h, penetration of the insect cuticle at 36 h, and finally, fungal colonization of the whole insect body at 60 h. In contrast, we never observed penetration of the predator's cuticle and conidia were shed gradually from the body, further demonstrating that B. bassiana strain SZ-26 show high toxicity against F. occidentalis but no pathogenicity to predatory mite.

  9. Optimizing Western Flower Thrips Management on French Beans by Combined Use of Beneficials and Imidacloprid

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    Johnson O. Nyasani

    2015-03-01

    Full Text Available Western flower thrips (WFT, Frankliniella occidentalis (Pergande, is an important pest of vegetable crops worldwide and has developed resistance to many insecticides. The predatory mites Neoseiulus (=Amblyseius cucumeris (Oudemans, the entomopathogenic fungus Metarhizium anisopliae (Metsch., and an insecticide (imidacloprid were tested for their efficacy to reduce WFT population density and damage to French bean (Phaseolus vulgaris L. pods under field conditions in two planting periods. Metarhizium anisopliae was applied as a foliar spray weekly at a rate of one litre spray volume per plot while imidacloprid was applied as a soil drench every two weeks at a rate of two litres of a mixture of water and imidacloprid per m2. Neoseiulus cucumeris was released every two weeks on plant foliage at a rate of three mites per plant. Single and combined treatment applications reduced WFT population density by at least three times and WFT damage to French bean pods by at least 1.7 times compared with untreated plots. The benefit-cost ratios in management of WFT were profitable with highest returns realized on imidacloprid treated plots. The results indicate that M. anisopliae, N. cucumeris, and imidacloprid have the potential for use in developing an integrated pest management program against WFT on French beans.

  10. Búsqueda de enemigos naturales nativos de Frankliniella occidentalis (Pergande(thysanoptera: thripidae, sobre Dendranthema grandijlorum en el municipio de Piendamo, cauca.

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    Castro V. Ulises

    1999-06-01

    Full Text Available En la empresa "Flores del Cauca" en el municipio de Piendamó a 1S00 m.s.n.m. con temperatura promedia de 18° C y HR de SO ± 5%, se hizo una búsqueda de enemigos naturales nativos de F. occidentalis (Thysanóptera: Thripidae sobre eras experimentales de Dendranthema grandiflorum libres de control químico. La búsqueda se extendió a los hospedantes alternos del tisanóptero en áreas aledañas al cultivo. Semanalmente se cosechaban plantas de crisantemo, se llevaban al laboratorio para la recolección de thrips y sus enemigos naturales nativos. En el laboratorio se realizaron bioensayos para probar la acción depredadora de algunos de los enemigos de F. occídentalis que fueron encontrados en crisantemo. Se encontraron los siguientes enemigos naturales nativos: El hemíptero Orius sp. (Anthocoridae. los ácaros Amblyseius herbjcolus. Euseius naindaimei y Thyplodromalus peregrinus (Phytoseiidae, larvas de Chrysopidae; los thrips leptothirs sp. y Haplotrips gowdeyi (Phlaeothripidae, un ácaro de la familia Ascidae; difereflles especies de arañas; larvas de la familia Coccinellidae y adultos de F. occidentalis infectados por hongos no identificados.

  11. Diversidad taxonómica y denso-actividad de solífugos (Arachnida: Solifugae asociados a un ecosistema desértico costero del centro norte de Chile Taxonomic diversity and density-activity of solpugids (Arachnida: Solifugae in a coastal desert ecosystem in the northern centre of Chile

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    Daniel E. Valdivia

    2008-06-01

    Full Text Available En Chile, el orden Solifugae está representado por 14 especies agrupadas en 10 géneros, distribuidos en las tres familias descritas en Sudamérica: Ammotrechidae, Mummuciidae y Daesiidae. En el presente trabajo se documenta la composición genérica y/o específica de solífugos asociados a un ecosistema desértico costero del centro norte de Chile, y se muestran las variaciones de su denso-actividad. El estudio se realizó en el sector costero de Punta de Choros (29°21'S, 71°10'O; 17 msnm, durante los meses de junio, agosto, octubre y noviembre de 2005. Entre los 249 ejemplares capturados, se reconoció la presencia de tres familias, cuatro géneros y cinco especies. Éstas fueron Procleobis sp., Sedna pirata Muma (Ammotrechidae, Mummucia sp., Mummucia variegata (Gervais (Mummuciidae y Ammotrechelis goetschi Roewer (Daesiidae. La mayor denso-actividad de solífugos se registró en los meses de octubre, 5 especies (ca 30 % del total capturado; y noviembre, 3 especies (ca 41 % del total capturado. Mientras que algunas especies se mostraron activas durante todo el período de estudio (e.g., Ammotrechelis goetschi, otras presentaron actividad parcial. Por ejemplo, Mummucia variegata manifestó actividad entre agosto y noviembre; Sedna pirata entre octubre y noviembre y tanto Procleobis sp. como Mummucia sp. estuvieron activas sólo en octubre. La diversidad y la denso-actividad de Solifugae estarían determinadas por factores biológicos y ecológicos.In Chile the order Solifugae is represented by 14 species arranged in 10 genera distributed among the three families described for South America: Ammotrechidae, Mummuciidae and Daesiidae. The present work documents the taxonomic composition of solpugids in a desert coastal ecosystem of the northern centre of Chile and describes variation in their density-activity. The study was carried out in the coastal sector of Punta de Choros (29°21'S, 71°10'W; 17 masl during June, August, October and

  12. Risk assessment of non-target effects caused by releasing two exotic phytoseiid mites in Japan: can an indigenous phytoseiid mite become IG prey?

    Science.gov (United States)

    Sato, Yukie; Mochizuki, Atsushi

    2011-08-01

    Two exotic phytoseiid mites, Neoseiulus cucumeris and Amblyseius swirskii, are commercially available in Japan for the control of thrips and other pest insects. As part of a risk assessment of the non-target effects of releasing these two species, we investigated intraguild predation (IGP) between these exotic phytoseiid mites and an indigenous phytoseiid mite Gynaeseius liturivorus, which is promising as an indigenous natural enemy for the control of thrips in Japan. To understand IGP relations between the exotic and indigenous phytoseiid mites after use of the exotic mites for biological control, we investigated IGP between them in the absence of their shared prey. When an IG prey was offered to an IG predator, both exotic and indigenous females consumed the IG prey at all immature stages (egg, larva, protonymph, deutonymph), especially at its larval stages. The propensity for IGP in a no-choice test was measured by the survival time of IG prey corrected using the survival time of thrips offered to the IG predator. There was no significant difference in the propensity for IGP between N. cucumeris and G. liturivorus, but the propensity was significantly higher in A. swirskii than G. liturivorus. The propensity for IGP in a choice test was measured by the prey choice of the IG predator when a conspecific and a heterospecific larva were offered simultaneously as IG prey. Both exotic females consumed the heterospecific larva only. The indigenous female preferentially consumed the heterospecific larva when the heterospecific larva was N. cucumeris, but consumed the conspecific larva when the heterospecific larva was A. swirskii. We concluded that further investigation would be necessary for the exotic mites' risk assessment, since the propensity for IGP of the two exotic females was similar to or higher than that of the indigenous female in both the no-choice and choice tests.

  13. From repulsion to attraction: species- and spatial context-dependent threat sensitive response of the spider mite Tetranychus urticae to predatory mite cues

    Science.gov (United States)

    Fernández Ferrari, M. Celeste; Schausberger, Peter

    2013-06-01

    Prey perceiving predation risk commonly change their behavior to avoid predation. However, antipredator strategies are costly. Therefore, according to the threat-sensitive predator avoidance hypothesis, prey should match the intensity of their antipredator behaviors to the degree of threat, which may depend on the predator species and the spatial context. We assessed threat sensitivity of the two-spotted spider mite, Tetranychus urticae, to the cues of three predatory mites, Phytoseiulus persimilis, Neoseiulus californicus, and Amblyseius andersoni, posing different degrees of risk in two spatial contexts. We first conducted a no-choice test measuring oviposition and activity of T. urticae exposed to chemical traces of predators or traces plus predator eggs. Then, we tested the site preference of T. urticae in choice tests, using artificial cages and leaves. In the no-choice test, T. urticae deposited their first egg later in the presence of cues of P. persimilis than of the other two predators and cue absence, indicating interspecific threat-sensitivity. T. urticae laid also fewer eggs in the presence of cues of P. persimilis and A. andersoni than of N. californicus and cue absence. In the artificial cage test, the spider mites preferred the site with predator traces, whereas in the leaf test, they preferentially resided on leaves without traces. We argue that in a nonplant environment, chemical predator traces do not indicate a risk for T. urticae, and instead, these traces function as indirect habitat cues. The spider mites were attracted to these cues because they associated them with the existence of a nearby host plant.

  14. Múltiple natural enemies do not improve two spotted spider mite and flower western thrips control in strawberry tunnels

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    Gemma Albendín

    2015-03-01

    Full Text Available Biological control techniques are commonly used in many horticultural crops in Spain, however the application of these techniques to Spanish strawberries are relatively recent. In this study the effectiveness of augmentative biological control techniques to control the two main strawberry (Fragaria xananassa Duchesne pest: the two-spotted spider mite (TSSM, Tetranychus urticae Koch (Acari: Tetranychidae, and the western flower thrips (WFT, Frankliniella occidentalis (Pergande (Thysanoptera: Thripidae, through releases of the predatory mites Phytoseiulus persimilis Athias-Henriot, Neoseiulus californicus (McGregor, Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae, and Orius laevigatus (Fieber (Heteroptera: Anthocoridae were tested. Two-year results on the performance of treatments using combinations of these biocontrol agents are presented. In both years, all treatments resulted in the reduction of TSSM numbers; but no treatment was better than the release of P. persimilis alone (P < 0.05. TSSM suppression varied among crop phases being greater early in the season. None of the treatments reduced significantly WFT numbers (P < 0.05, and the established economic injury level (EIL was surpassed from March to late April in both years. However, EIL was surpassed less times when treatment included O. laevigatus (2009: 20.7%; 2010: 22.7% of samples. No effect of A. swirskii was observed when this mite was released. Results corroborate that biological control techniques for TSSM and WFT are feasible for high-plastic tunnel strawberries. Under the conditions in our study no additive effects were observed, and there was not advantage in the release of multiple natural enemies.

  15. Evaluación de estrategias de control biológico de Polyphagotarsonemus latus (Banks y Phyllocoptruta oleivora (Ashmead en naranja Valencia

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    Karol Imbachi L

    2012-12-01

    Full Text Available El daño ocasionado por los ácaros Polyphagotarsonemus latus (Banks y Phyllocoptruta oleivora (Ashmead en el cultivo de naranja Valencia (Citrus sinensis L. es reconocido tanto por el impacto económico como por el daño externo de los frutos. En este trabajo se evaluó el efecto de agentes biológicos para el control de estas plagas en un cultivo comercial de naranja Valencia en el municipio de Caicedonia, Valle del Cauca, Colombia. Se usó un diseño de bloques completos al azar para evaluar los tratamientos siguientes: (1 liberación de especies de Phytoseiidae nativos (Neoseiulus anonymus, Neoseiulus californicus, Iphiseiodes zuluagai y Amblyseius herbicolus en poblaciones de 500 individuos/árbol; (2 liberación de larvas de Chrysoperla carnea (100 larvas/árbol; (3 aplicación localizada de cipermetrina 2 cm³/lt como tratamiento de exclusión de agentes benéficos; y (4 testigo consistente en el tratamiento utilizado por los agricultores (aplicación localizada de abamectina, 1.5 cm³/lt. Las liberaciones de las especies benéficas y las aplicaciones de los tratamientos se realizaron sobre racimos florales y frutos marcados en el tercio medio de cada árbol. Las evaluaciones de daños se realizaron cada semana hasta la cosecha. Los tratamientos de liberación de Phytoseiidae, liberación de larvas de C. carnea y aplicación de abamectina presentaron el menor daño de P. latus; el tratamiento de exclusión de benéficos demostró la importancia de los agentes controladores naturales sobre la plaga. En el manejo de P. oleivora, los tratamientos de liberación de larvas de C. carnea y aplicación de abamectina presentaron los mejores resultados con el menor daño en frutos. La población de P. oleivora ocasionó daños significativos en el tratamiento de liberación de ácaros Phytoseiidae y exclusión de benéficos.

  16. Fusarium semitectum, a potential mycopathogen against thrips and mites in chilli, Capsicum annuum.

    Science.gov (United States)

    Mikunthan, G; Manjunatha, M

    2006-01-01

    In India, chilli (Capsicum annuum L.) suffers with a characteristic leaf curl symptoms due to the attack of mite, Polyphagotarsonemus latus (Banks) (Acari: Tarsonemidae) and thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) or both. Experiments were conducted in the fields of College of Agriculture, Shimoga, India during kharif (September 2003 to January 2004) and summer (March-June) 2004. After proving its pathogenicity, the potential of the mycopathogen, Fusarium semitectum was evaluated under field conditions using the popular chilli variety "Byadagi". Different combinations of Fusarium semitectum formulations with monocrotophos (0.025% and 0.05%) were tested. Oil-emulsion and dust-water formulations (DWF) at 1x 10(8) spore/ml, DWF with monocrotophos and 5% Neem Seed Kernal Extract (NSKE) were evaluated. Population of S. dorsalis, P. latus, predatory mite Amblyseius ovalis and damage index were estimated. Populations of thrips, mite and the predatory mite were estimated at 15 days interval after 30 days of transplanting. Damage index was assessed using a visual rating method. Plant height, fruit length and dry chilli yield of each treatment were also taken. Among the treatments, oil-emulsion formulation and dust water formulation of F. semitectum in combination with monocrotophos (0.05%) reduced the population of thrips significantly over other treatments. Dust water formulation was achieved a significant decline of thrips population in chilli plants after 60 days of transplanting. This reduction of thrips population could be achieved due to the effect of second spraying, which was given at 50 days after transplanting. Chilli plant height and fruit length did not vary significantly among the treatment in both seasons. The highest dry chilli yield of 512 and 1058 kg/ha was recorded in dust water formulation in combination with monocrotophos (0.05%) followed by oil formulation (432 kg/ha and 763 kg/ha) in Kharif and summer seasons, respectively

  17. Long-term alteration of bentonite in the presence of metallic iron

    Energy Technology Data Exchange (ETDEWEB)

    Kumpulainen, S.; Kiviranta, L. [B and Tech Oy, Helsinki (Finland); Carlsson, T.; Muurinen, A. [VTT Technical Research Centre of Finland, Espoo (Finland); Svensson, D. [Svensk Kaernbraenslehantering AB (SKB), Stockholm (Sweden); Sasamoto, Hiroshi; Yui, Mikatzu [Japan Atomic Energy Agency (JAEA) (Japan); Wersin, P.; Rosch, D. [Gruner Ltd, Basel (Switzerland)

    2011-12-15

    , inter alia, reducing conditions, a pH of around eight, and measurable amounts of Mg{sup 2+}, Ca{sup 2+}, and SO{sub 4} {sup 2-}. The bentonite was carefully divided into subsamples, which were studied with XRD, FTIR, SEM, ICP-AES, TEM-EDS, XANES, Moessbauer spectroscopy, and wet-chemical methods. Briefly, bentonite samples containing cast iron cylinders contained higher amounts of iron than the reference samples. The corroded iron was predominantly in the divalent form, and its concentration was highest close to the cylinder and decreased strongly with increasing distance from its surface. The average corrosion rate estimated from Fe profiles in the Fe-reacted samples is about 1.7 {mu}m/a. The results from the Moessbauer spectroscopy analyses suggest that no reduction of the octahedral Fe{sup 3+} in the montmorillonite layers had occurred. The swelling pressure and the hydraulic conductivity were measured in undisturbed subsamples of the MX-80. The iron-bentonite interaction seemed to slightly decrease the swelling pressure, while the hydraulic conductivity was unchanged. The corrosion rate of the Cu vessel surface was estimated from the Cu analysis in the clay to be about 0.035 {mu}m/a. The JAEA samples were analyzed with regard to the conditions in the water and in the bentonite. The water exhibited pH values in the approximate range of 11 to 13, and clearly reducing conditions with Eh values between -260 and -580 mV. XRD and FTIR analyses of the bentonite material, showed that montmorillonite was completely transformed to a non-swelling 7 Aa clay mineral, most likely to the serpentine mineral berthierine, in samples containing 0.3-0.6 M NaCl solutions, with the highest pH values. The transformation was incomplete in samples containing 0.1 M NaHCO{sub 3} solution, and did not occur at all when the solution was either 0.05 M Na{sub 2}SO{sub 4} or distilled water. (orig.)

  18. Mid- to Late-Holocene estuarine infilling processes studied by radiocarbon dates, high resolution seismic and biofacies at Vitoria Bay, Espirito Santo, Southeastern Brazil

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    Alex C. Bastos

    2010-09-01

    espessura. Os resultados indicam que até aproximadamente 4.000 anos cal. AP, as condições ambientais da Baía de Vitória eram ainda de uma baía aberta, com uma conexão livre e aberta com águas marinhas. Durante os últimos 4.000 anos a baía experimentou uma fase de regressão importante, tornando-se mais restrita em termos de circulação da água do mar e provavelmente aumentando a energia de marés. Três superfícies estratigráficas principais foram reconhecidas, limitando fácies transgressiva, transgressiva/nível de mar alto e regressiva. A morfologia do canal atual representa um diastema de maré, mostrando fácies regressivas truncadas e erodidas. Biofácies de foraminíferos, passando de ambiente marinho para ambiente salobro e de manguezais em planície de maré confirmam a interpretação sismoestratigráfica. A ausência de biofácies de mangue em um dos dois testemunhos é tambémuma indicação de ravinamento de maré atual.