[Synanthropic flies (Diptera: Cyclorrapha) and their microhymenoptera parasitoids (Insecta: Hymenoptera) at Monte Mor poultry production system, São Paulo, Brazil].

Abstract

A survey of synanthropic flies and their microhymenopteran parasitoids was conducted at the Capuavinha poultry farm, municipality of Monte Mor, State of São Paulo, Brazil, from 1991 to 1992. Bird manure samples were collected biweekly for examined and selected by the following methods: flotation in water, dissected pupae, and sentinel pupae. The species of flies more abundant were: Chrysomya putoria (Wiedeman) (41.2% - Calliphoridae), Muscidae: Muscina stabulans( Fallén) (27.3%), Musca domestica Linnaeus (23.9%), Fannia pusio (Stein) (5.3% - Fanniidae) e Sepsidae (2.3%). The pupal parasitoids were: Tachinaephagus zealandicus (Ashmead) (72.4% - Encyrtidae), Pteromalídeos: Spalangia gemina Boucek (9.2%), S. cameroni (Perkins) (7.3%), S. endius (Walker) (3.7%), Muscidifurax raptoroides (Kogan e Legner) (1.5%), Pachycrepoideus vindemiae (Rondani) (0.8%), Nasonia vitripennis Walker (0.06%). Trichopria sp. Nixon (Diapriídeo 5.5%) detected only in C. putoria pupae (t=-1,5269; P <0,1296). Some significant mean values were obtained for parasitoids in the collected hosts (t = 0.9540; Pr <0.0001), proportion of collected pupae and parasitoids with respect to the collecting site (F = 60.85; Pr <0.0001; F = 358.35; P <0.0001) and for the host species and parasitoid species (F = 2.58; Pr <0.0001; F = 9. 48; P <0.0001). The dissected host species was significant for proportion dissected pupae (F = 1.57; Pr <0.2053). These results concerning the insect fauna can be of help for an appropriate management of this poultry farm in terms of the control of synanthropic flies.