ABSTRACT. Differences in the phoresy of the mites Macrocheles muscaedomesticae (Scopoli, 1972) (Macrochelidae) and Uroseius sp. (Polyaspidae) on the house fly, Musca domestica (Linnaeus, 1758) and the similarities in their phoretic dispersal and parasitism are discussed, altogether with the effects on predator-prey interactions. The prevalence and intensity of phoresy in the mite species were significantly related to the attachment site on the hosts. The phoresy of Uroseius sp. was correlated with temperature but not with rainfall and relative humidity. Selective pressure in the environment resulted in displacement and the emergence of local and regional populations. These results suggest that in each habitat the populations will use different resources and will show several relationships with other species, as well as a selection for morphological and behavioral types.
RESUMO O cascudinho (Alphitobius diaperinus), importante praga de granjas avícolas, se reproduz principalmente sob comedouros do galpão de frango, sendo o inseto beneficiado pela serragem que cobre o pavimento, e pela ração que cai dos comedouros. O presente estudo objetivou avaliar a eficiência do nematóide entomopatogênico Heterorhabditis indica IBCB–n05 no controle de larvas e adultos desse inseto, mediante a aplicação do agente sobre a serragem, sob comedouros do galpão de frango, e também no pavimento de solo batido do galpão. Juvenis infectantes desses nematóides foram aplicados nas dosagens de 0,4; 4 e 40 nematóides por cm2 sobre a serragem. No teste sob comedouros, 12 dias após aplicação, o nematóide nas três dosagens proporcionou, respectivamente, 94%, 97% e 100% de controle de larvas, e 70%, 77% e 89% de adultos. Já no teste sobre o solo batido o nematóide proporcionou 15%, 31% e 35% de controle de inseto, respectivamente.
32 a RAIB Reunião Anual do Instituto Biológico Os resumos são apresentados na forma de pôsteres, durante o evento, e publicados no Suplemento da revista "O Biológico", online. A Comissão Organizadora empenhou-se para que houvesse uma programação que permeasse pela sanidade, nosso ícone de conhecimento, trazendo novas propostas dos nossos convidados. Os temas abordados são: Criomicroscopia Eletrônica, Reconstrução Tridimensional em MET, Programa Agente local de Inovação-SEBRAE, As qualidades humanas essenciais para culturas organizacionais saudáveis, Gestão de empreendimentos agroflorestais com uso de imagens aéreas, Producão orgânica de leite: princípios e desafios, Desafios da Cadeia da batata, Desafios para o controle da brucelose x acreditação de laboratórios, Controle de qualidade para laboratório, Avanços na produção de antígenos para suportar o Programa nacional de controle e erradicação da brucelose e tuberculose. Agradecemos à Dra. Ana Eugênia de Carvalho Campos, pelo total apoio no transcorrer de nosso trabalho, durante a organização da 32ª RAIB. À Comissão Organizadora, que não mediu esforços para o sucesso do evento. Ao Centro Administrativo, pela colaboração emprestada. Também, à Silvana D'Agostini, pela sua sempre colaboração. Não poderíamos deixar de agradecer aos nossos apoiadores e patrocinadores, FUNDEPAG, Laboratórios BRUCH LTDA e THERMOFISHER.
Species in the cohort Uropodina include a great diversity of free-living mites, which inhabit soil, leaf litter and manure. These habitats present favorable microclimatic aspects for colonization and succession of several species of mites, with different niches occupied over time. For poultry manure, many weeks of manure accumulation are necessary for there to be sufficient colonization by predatory and decomposing arthropods, including mite species, and for the formation of complex food webs for ecological stability. The knowledge of manure mite fauna in Brazil is hampered by the great diversity of species and the lack of specialists. In the State of São Paulo, there are few known species of edaphic and manure mites from the cohort Uropodina. This study presents taxonomic and some comparative distribution data about uropodids in poultry manure in the State of São Paulo. The manure was collected in poultry farms in Mogi-Guaçu, SP (1,800 kg) in July 2022. The mites were extracted by Berlese-Tullgren method over an eight-day period and preserved in 70% alcohol. The mites were counted and Uropodina identified by visual observation for clarification and preparation of slides in Hoyer’s medium. The mite specimens were compared with the mites previously collected in manure from a laying farm in Santa Cruz da Conceição, SP in July 2001 and July 2002. Two morphospecies of Thrichouropoda were identified in the samples from Mogi-Guaçu. The mites obtained in Santa Cruz da Conceição, SP had representatives in the genera Uroseius, Uroobovella and Thrichouropoda, with four morphospecies identified. The variation in distribution and diversity of uropodids in the manure of both poultry farms suggest that instabilities regarding the accumulation of manure, management in these properties, environmental changes over the years and factors intrinsic to the locations, could affect the uniformity of collections in these areas. The uropodids from this study were deposited in the Collection of Arthropods of Medical and Veterinary Importance (IB-CPAMV), Laboratory of Animal Parasitology, Biological Institute of São Paulo.
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