Parasitism on bats by bat flies in remnants of a humid forest enclave area in Northeastern Brazil.
Veterinary parasitology, regional studies and reports(2022)
Abstract
Flies are the main bloodsucking ectoparasites of Neotropical bats. The aim of this study was to describe the community of flies on bats from a humid forest enclave, surrounded by the semiarid landscape of the Caatinga domain, in Northeastern Brazil. In addition, we tested the influence of dry and rainy periods on the parasitological indices. Fieldwork was carried out in three anthropized remnants of a humid forest enclave in the Agreste mesoregion of Pernambuco state, Northeastern Brazil. Bats were captured monthly, from August 2018 to July 2019, and the ectoparasites were collected. Overall, 807 bats of 14 species and 11 genera of the families Phyllostomidae (13 spp.) and Vespertilionidae (1 sp.) were captured. Only four bat species had >50 individuals captured, and Carollia perspicillata was the most abundant species (259/807; 32%). Five hundred and seventy-one bat flies from 13 species (11 Streblidae and 2 Nycteribiidae) were collected, of which Trichobius joblingi was the most prevalent fly (197/571; 34.5%). Only the parasitism by T. joblingi was influenced by seasonality, with higher prevalence (P = 0.01) and intensity of infestation (P = 0.02) in the dry season. No lesions associated with parasitism were observed in any of the captured bats. Our results suggest that the bat-fly relationship can be affected in different ways by environmental variables, depending on the species involved. The results of this work contribute to the knowledge about ectoparasites of bats in the Neotropical region, with emphasis on humid forest enclaves, where studies of the host-parasite-environment relationship are scarce.
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Key words
bats flies,humid forest enclave area,brazil
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