O efeito de diferentes substratos na identificação de espécies de dípteros sarcosaprófagos em fragmentos de Mata Atlântica da cidade de Natal/RN

Abstract

ABSTRACT Insects perform many important functions in nature that help maintain balance in ecosystems. Muscomorpha diptera would be no different, they contribute directly to the ecosystem balance by accelerating the recycling of organic matter and allowing nutrients to be reused. This study aimed to evaluate the attractiveness of different substrates on the assembly of sarcosaprophagous dipterans in a preserved fragment of the Atlantic Forest. The collections were carried out in the State Park Dunas do Natal - RN and in a fragment of forest located inside the federal University of Rio Grande do Norte during the months of July and August 2019. For the collection of insects, suspended traps made from from a pet bottle, which were baited with five different types of substrates: fermented mango and cashew, decomposed chicken and fish liver, and fresh human feces. A total of 1,499 adults from eight families were collected. Calliphoridae was the most representative family with (32.49%) of the collected specimens, followed by Phoridae (16.54%), Fannidae (15.88%) and Sarcophagidae (13.88%). The other families: Drosophilidae, Muscidae, Micropezidae and Ulidiidae correspond to (21.21%) of the total of individuals. Among the substrates, chicken liver and human feces were the most attractive substrates represented (47.63%) and (23.08%) of adult flies, respectively. The substrates that proved to be less efficient in the locality were cashew (9.74%), fish (12.88%) and mango with (6.67%) of adults. The results also revealed that Lucilia eximia was the most abundant species in the study areas. The present work also contributed to the enrichment of the list of Diperas species known in the state of RN. If new records were found for the Muscidae families: Cariocamia maculatus (Snyder, 1951) and Helina sp; Sarcophagidae: Oxysarcodexia diana (Lopes, 1933), O. bakeri (Aldrich, 1916), Sarcofahrtiopsis cuneata (Townsend, 1935), Sarcophaga (Liopygia) crispola () and Tricharaea (Sarcophagula) canuta (Wulp, 1896) and also the record of 1896) family Micropezidae.