Inventário da Fauna de Coleópteros (insecta, Coleoptera) em Serapilheira em um fragmento de Floresta no Município de Conde, Paraíba, Brasil

Abstract

The beetles form the most diverse range of living organisms, the order Coleoptera, being the knowledge about them very small related to its great diversity. The study was cinducted in Caxitu, municipality of Conde, Paraiba, where two incursions were performed in 2011 (48 samples during the dry season and 48 during the rainy season) collected in the litter by the Winkler Extractor to estimate the distribution of beetles in the remaining Atlantic Forest. It was used the richness estimators Uniques, Duplicates, Sibgletons and Doubletons. In total 96 samples were collected, with 584 individuals samples, 41 morphospecies and seven families. The family that was best represented in this study was Staphylinidae for the two seasons, but it was richer in the rainy season and more abundant in the dry season. With regard to the accumulation curve of species the one that tended more to stability was in the dry season, however none tended to asymptote. Regarding the estimates of wealth from the general data Chao2 was the lowest (47sp.) and Jackknife2 was the highest (54sp.). Although the number of samples has been the same for the two periods, the dry period had greater abundance, but the rainy season had higher species richness. In relation to the rarity of species, the rainy season has contributed more to the presence of Singletons (17) and doubletons (5), Uniques (18), Duplicates (6), than the dry period. Because there are rare species in the studied fragment it confirms the need to increase the sampling effort and also affirming the need for conservation of the locality.