Entomofauna na área de proteção florestal Sítio Aguahy localizada na Amazônia legal maranhense

Abstract

Forest fragments are areas that promote the preservation of organisms, and these perform important ecosystem functions for the environment. Insects are among the environmental indicators that help to identify the health of these areas. The objective was, therefore , to carry out a survey of the Entomofauna present in the Sítio Aguahy Forest Reserve , located in the Legal Amazon of Maranhão, in the municipality of São José de Ribamar, in the north of Maranhão. The study was carried out in the Sítio Aguahy forest reserve , in which five collections were carried out in the period from August to December 2021, and from January to May 2022, with 20 traps being installed per area and 60 in total per area. collect. Subsequently, the sorting, cleaning and separation of the orders that were found was carried out. The data were analyzed through the faunal abundance indices, and the frequency was obtained. Next, the Shannon-Wiener (H'), Simpson dominance and Pielou equitability indices were obtained , calculated in the Past v. 2.17c. A total of 19,024 insects comprising six orders of the Class Insecta were collected and identified: Blattodea , Coleoptera , Diptera , Hymenoptera , Lepidoptera and Neuroptera . The orders Diptera and Hymenoptera stood out as the most abundant, while Blattodea (cockroaches), Coleoptera , Lepidoptera and Neuroptera presented the lowest frequencies; The diversity, dominance and evenness indices did not present significant values in the different areas of the study; and it was observed that the rainy season favored the abundance of entomofauna. Finally, the study made it possible to suggest that the orders present in this forest fragment are influenced by human intervention and that it is in the recovery phase