The assemblage composition and structure of swimming crabs (Portunoidea) in continental shelf waters of southeastern Brazil

Autor(es)

Andrade, L. S. ^[1] ; Frameschi, I. F. ^[1] ; Costa, R. C. ^[2] ; Castilho, A. L. ^[1] ; Fransozo, A. ^[1]

Afiliação do(s) autor(es)

^[1] UNESP, NEBECC, Inst Biociencias, Dept Zool, Crustacean Biol Ecol & Culture Study Gr, BR-18618000 Botucatu, SP - Brazil

^[2] UNESP, NEBECC, Fac Ciencias, Dept Ciencias Biol, Crustacean Biol Ecol & Culture, BR-17033360 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CONTINENTAL SHELF RESEARCH; v. 94, p. 8-16, FEB 15 2015.
• Citações Web of Science: 6

Resumo

Three regions along the Brazilian coast characterized by the occurrence of contrasting natural phenomena, such as upwellings and continental input, were surveyed to determine the composition and structure of the assemblage of swimming crabs. Twelve monthly collections were undertaken (July 2010 to June 2011) in Macae, Rio de Janeiro (MAC); Ubatuba, Sao Paulo (UBA); and Sao Francisco do Sul, Santa Catarina (SFS). The lowest values of the phi sediment grain size measure, bottom temperature and the highest values of organic matter and salinity were measured in MAC. In all, 10,686 individuals were collected, belonging to six species of Portunoidea: Arenaeus cribrarius, Callinectes danae, Callinectes ornatus, Callinectes sapidus, Achelous spinicarpus and Achelous spinimanus. A Multiple Response Permutation Procedure (MRPP) test indicated that the species composition differed significantly among the sampling sites, showing substantial heterogeneity in the composition and abundance of species among regions. The results suggest that C. danae was more abundant in waters with lower salinity and lower organic matter content. In contrast, A. spinimanus is positively correlated with these factors, showing a greater abundance under the opposite conditions. Callinectes ornatus appeared not to show strong selectivity for particular habitat characteristics. We conclude from these findings that areas affected by different phenomena produce changes in the composition and abundance of the assemblage of Portunoidea. Although the strength of eutrophication differs between UBA and MAC, the substantial continental inflow affecting SFS favors the development of species that complete their life cycle in the estuary. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 09/54672-4 - Biologia reprodutiva e dinâmica populacional dos camarões Penaeoidea (Crustacea, Decapoda) em duas regiões do sudeste brasileiro: efeito latitudinal e proposta para o período de defeso
• Beneficiário: Rogério Caetano da Costa
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/50411-1 - Composição e dinâmica populacional da assembleia de Portunoidea (Crustacea, Decapoda) ao longo de um gradiente latitudinal e efeito da ressurgência
• Beneficiário: Luciana Segura de Andrade
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 10/50188-8 - Crustáceos decápodes: multidisciplinaridade na caracterização da biodiversidade marinha do estado de São Paulo (taxonomia, espermiotaxonomia, biologia molecular e dinâmica populacional) (Biodiversidade Marinha)
• Beneficiário: Fernando Luis Medina Mantelatto
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático