Influência de fatores ambientais em diferentes escalas espaciais sobre a distribuição de Simulídeos (Diptera: Nematocera) em córregos tropicais
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Data
2012-02-13
Autores
Del Carro, Karina Bertazo
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Universidade Federal do Espírito Santo
Resumo
The black flies are insects with broad geographical distribution whose immature lotic environments need to survive. Their larvae live attached to various substrates such as leaves, branches, submerged rocks where they feed on detritus and phytoplankton, which are filtered through their cephalic fans. They are commonly known as "Piuns" or "Borrachudos", and in Brazil are 88 known species. Adult insects have blood-sucking habit, and some species have a preference for human blood. The objective of this study was to analyze which factors are responsible for the spatial distribution of species of black flies in tropical streams of the state of Espirito Santo, verify that wealth and the distribution of species in the regions of plains and plateau regions are differentiated, as well as providing a updated list of species recorded for the state. 93 raids were carried out in rivers of the Espirito Santo and the samples were collected by manual picking and network utilization D. The specimens were placed in bottles containing 92.6% alcohol and later identified to species level in the laboratory. Thirty species of black flies were collected, with 13 new records for the state and also for the Southeast region: Simulium scutistriatum, S. dinellii, S. exiguum, S. minusculum, S. distinctum, S. oyapockense s.l., S. rappae, S. botulibranchium, S. ochraceum, S. clavibranchium, Lutzsimulium hirticosta, S. lobatoi, S. pertinax, S. jujuyense, S. rubrithorax, S. travassosi, S. subnigrum, S. spinibranchium, S. anamariae, S. hirtipupa, S. lutzianum, S. nigrimanun, S. incrustatum, S. inaequale, S. subpallidum, S. perflavum, S. brachycladum, S. guianense, S. petropoliense e S. limbatum. The species composition of regions with the highest altitude is different from those of the lower regions. The variable altitude inversely explains the richness, abundance and composition of the highlands, since the width explains, alone, the species composition and the river Sweet as geographical barrier
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Palavras-chave
Blackflies , Diversity , Water velocity , Borrachudos , Diversidade , Mata Atlântica , Velocidade da água
Citação
DEL CARRO, Karina Bertazo. Influência de fatores ambientais em diferentes escalas espaciais sobre a distribuição de Simulídeos (Diptera: Nematocera) em córregos tropicais. 2012. 91 f. Dissertação (Mestrado em Biodiversidade Tropical) - Universidade Federal do Espírito Santo, Centro Universitário Norte do Espírito Santo, São Mateus, 2012.