Padrão de distribuição de besouros rola-bostas (Insecta: Coleoptera: Scarabaeidae: Scarabaeinae) na região de Chapada dos Guimarães

Abstract

Biodiversity of a given site is a corollary of the interaction between ecological factors and evolutionary history of the site. This work was carried out in Chapada dos Guimarães, Mato Grosso, Brazil, where geologically is the border among Brazilian Shield and a part of Chacoan Depression (Baixada Cuiabana), and biogeographically is the border among Pantanal and Cerrado provinces. In this thesis we aimed to determine biotic components of dung beetles; and in the second objective: we describe the species composition, and associate its respective occurrence habitats with their global distribution, and also we update species checklist of dung beetles from the region. Were collected 17635 individuals of dung beetles belonging to 98 species. Based on panbiogeographical analysis, we observed 12 biotic components, distributed in three subregions, namely: Chacoan, Amazonian and Parana. Biotic components of dung beetles include representatives from different biogeographic origins. However, the Southern Pantanal recorded dung beetle fauna which are not related to Amazonian fauna, hence, we suppose to include the South region of Pantanal to the Chaco province. Dung beetle fauna responded to the abrupt variation of altitude, as consequence, in the upland savanna formations we observed species which are predominantly distributed in the Cerrado biogeographic province, whilst in the lowland savanna formations were composed mainly by species which are commonly distributed in the provinces of Chaco or Chaco + Cerrado. Forest formations harbor species which occur frequently in the amazon sub-region.