Moscas (Diptera, streblidae) Ectoparasitas de Morcegos (Chiroptera, Phyllostomidae) neotropicais, no Município de Juiz de Fora - Minas Gerais

Abstract

The aim of this work was to make a quantitative and qualitative study of the dipterans of Streblidae family, parasitizing bats, and also evaluate their associations with host’s sex, reproductive condition, weight and height. The bats were collected at 18 collection sites, distributed in urban and rural areas at Juiz de Fora, Minas Gerais, during May of 2005 to August 2007. The collections were carried out with mist-nets opened at evening and closed at midnight. Were caught 341 bats, from ten species, where 132 individuals supported 303 flies from 12 species of Streblidae. Those species of bats, Carollia perspicillata had the greatest richiness of dipterans, Glossophaga soricina the greatest diversity and Platyrrhinus lineatus has the greatest dominance. The most prevalent dipteran caught was Paratrichobius longicrus with, 56,25% of prevalence. The most mean intensity was of Paratrichobiu longicrus with 6,50±3,55 parasitizing Glossophaga soricina and the most mean abundance were found to Trichobius furmani 1,47±1,88 on Desmodus rotundus. The sexual relationship of dipterans showed that the percent of males was bigger in five of eight species of the collected bats, two of them showed equal sexual reason and at three of them, the females were more representative. Two species of bat (Artibeus lituratus e Desmodus rotundus) had their parasite load analyzed to the different reproductive stages of males and females, the choice of these two species due that their have different alimentary habits. For the males, the biggest prevalence of dipterans was at reproductive stage with scrotal testes. At the females, the biggest prevalence was at milky for Artibeus lituratus and pregnant for Desmodus rotundus. Was reported the first record in Minas Gerais of Trichobius furmani, Paraeuctenodes similis e Trichobius dugesioides dugesioides. In Brazil, some relationships host/parasite was reported for the first time on: Carollia perspicillata having as most prevalent dipteran Trichobius tiptoni, and also been parasitized by Trichobius furmani; Megistopoda proxima parasitizing Platyrrhinus lineatus, Trichobius tiptoni parasitizing Artibeus lituratus and Trichobius tiptoni and also Megistopoda aranea parasitizing Glossophaga soricina. This work contributed for the increase of dipterans Streblidae richness at Minas Gerais state and also for an increase of knowledge about the relationship between host/parasite.