Diversidade abundância de marsupiais na Ilha de São Luís - MA

Abstract

Brazil has 55 species of marsupials all belonging to the family Didelphidae (order Didelphimorphia). Of this total, 17 species have already been identified in the state of Maranhão distributed in the diverse ecosystems such as the Amazon and cerrado. Studies involving marsupials for São Luís Island are restricted to a few species, with rare data on the composition of local fauna richness and abundance. The objective of this work was to know the diversity and abundance of the marsupial species present on the Island of São Luís. The methodology used was the capture of the specimens using sherman and tomahawk traps during the dry and rainy periods present in the APA Itapiracó and Maracanã, Itaqui Port and Sítio Aguahy. The richness of marsupial species on the Island of São Luís is represented by five (S = 5): Caluromys philander, Didelphis marsupialis, Gracilinanus agilis, Marmosa murina and Monodelphis domestica. The most abundant are Marmosa murina and Gracilinanus agilis. (Shannon-Wiener index H' = 1.07) compared to other areas such as the Inhamum APA (Caxias) with H' = 2.064. The marsupial community of São Luís Island is arboreal and semi-arboreal, where all species are considered generalists and all species registered are commonly associated with degraded and altered environments in urban and periurban forest areas, presenting great plasticity to adaptation to altered environments, due to factors related to the omnivorous diet.