Sistemática e Evolução - Pôsteres - 29/11/2023 - 15:30 h às 16:30 h

Polychaeta is a taxon of annelids that play a fundamental role in marine ecosystems. However, the identification and taxonomic classification of these organisms is a constant challenge due to its morphological diversity along with the current need of specialists. The main objective of this work is to conduct a taxonomic survey of polychaetes from the Ilha Grande Bay (Rio de Janeiro) through the project “Environmental, social and economic susceptibility of Ilha Grande Bay to spills and the presence of oil in the sea” (MONITOMAR). Specimens were collected from six (6) sites with three (3) sampling stations each, resulting in  eighteen (18)  collecting points. The material was collected, separated and labeled mentioning location and date of collection. Alcohol is applied to aid in its preservation, and then the identification process begins with the assistance of a stereomicroscope, microscope and specialized literature. To date, more than 2.000 individuals distributed in 44 families have been identified and a new species of Syllidae described to science. The most abundant and frequent groups have been Syllidae (893 individuals) and Glyceriformia (316 individuals). The results obtained will be of paramount importance for research and scientific production of new species and/or new occurrences on this important region.