Surveying and distribution of the brachyuran and anomuran (Crustácea, Decapoda) from the subllitoral sedments of Anchieta Island region, Ubatuba (SP)

Abstract

This work aims to determine the brachyuran and anomuran species that occur on sediments around Anchieta Island, Ubatuba (SP). Their distribution was also investigated. Three lines near at the island were established and monthly sampled for one year. The collects were effectuated by a shrimp fishery boat equipped with otter-trawl. It was obtained 1,210 specimens in 13 genus and 22 species. The brachyuran were represented by the families Portunidae, Calappidae, Majidae and Leucosiidae. The anomuran were represented by Diogenidae, Paguridae and Porcellanidae families. The most abundant species that occur in all sample lines were Callinectes ornatus Ordway, 1863; Hepatus pudibundus (Herbst, 1785); Dardanus arrosor insignis (de Saussure, 1858) and Pagurus exilis (Benedict, 1892). The first line, followed by the second, have presented the greatest number of species and abundance of individuals. The geographic position of these lines shows the most protected features of them. Paguristes robustus Forest and Saint Laurent, 1967 is reported for the first time in this area.