Coleopteros predadores de dipteros sinantropicos (COLEOPTERA: HISTERIDAE) em granja de aves poedeiras : levantamento, abundancia, distribuição sazonal e interações com Musca domestica L., (DIPTERA: MUSCIDAE)




This work was carried out in a poultry facility (Granja Capuavianha) located in the Monte Mor county, São Paulo state, and aimed to study the relationships between Musca domestica and histerid beetles. Three different methods were employed on each to sample beetles and flies over 40 m2 of sampling area: 1. Forty pitfall-traps to capture adult histerids; 2. Twenty jug-traps to capture adult flies; 3. Berlese s funnel to extract adult histerids and immature flies from 10 kg of manure coIlected each time. The material brought from the poultry facility was handled at the Entomology Laboratm) from the Department ofParasitology at UNICAMP. We sorted and identified 19,699 adult histerids, 97,740 synanthropic flies and 1l,7411arvae ofthese flies. Euspilotus modestus and Carcinops troglodytes were the most abundant histerids, making up 86% of the total histerids captured. These two species were also the most dominant (100%) throughout the duration of the study. Five more species of histerid beetle were also found Hololepta quadridentata, Hister dubius, Euspilotus sp., Acritus sp. and Phelister sp. Among the larvae of synanthropic flies, we identified 7 families: STRATIOMYIDAE (30%), CALLIPHORIDAE (28%), MUSCIDAE (26%), SPHAEROCERIDAE (90/0), SEPSIDAE (5%), SYRPHIDAE (2%) and FANNIIDAE (0,42%). There was a positive correlation between adults of M. domestica and E. modestus from January to June, 1993. There also was a positive correlation between E. modestus and larvae of Muscidae and Sphaeroceridae in August, 1993 and between E. modestus and larvae of Stratyomyidae in January of 1993. There was a positive correlation between C troglodytes and MUSCIDAE from October, 1992 and June to July, 1993. There also was a positive correlation with STRATIOMYIDAE from January, 1993. The dominance index for E. modestus and C troglodytes together was 100%. The relatively low diversity index (between O and 37%) confirms the great abundance of these species. Regression analysis showed a significative relationship between M. domestica and the monthly temperature (F=42.5; P<0,01) and also between adult histerids and monthly temperature (t=26.6; P


mosca domestica histeridae ave domestica

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