Porcellanid crabs (Crustacea, Decapoda) inhabiting sand reefs built by Phragmatopoma lapidosa (Polychaeta Sabellariidae) at Paranapuã beach , São Vicente, SP, Brazil

Abstract

The purpose of this study is to survey the porcellanid crab fauna inhabiting Phragmatopoma lapidosa sand reefs at Paranapuã Beach, São Vicente (SP), Brazil, and to assess species diversity, density and spatial distribution at this locality. Monthly samples were carried out from September/94 to August/ 95 in three established sampling sites along the rocky shore. Five species of Porcellanidae were recorded: Pachycheles laevidactylus, P. monilifer, Petrolisthes armatus, Pisidia brasiliensis and Megalobrachium roseum comprising 9,084 specimens. The former four species were recorded in all sampling sites while the latter ocurred only in one. The highest relative density was showed by P. laevidactylus followed by P. armatus. Remaining species were present in much lower densities, disregarding site or sampling month. In general, higher densities were registered during winter. The species, P. laevidactylus, P. monilifer and P. armatus showed an heterogeneous habitat occupation along the shore, probably reflecting different tolerance levels against salinity fluctuations.Key words: Porcelain crabs, species diversity, sabellariid reefs. RESUMO

Influence of environmental variables on the distribution of intertidal porcellanid crabs in Sepetiba Bay, Rio de Janeiro, Brazil

“…Since the average salinity did not differ between the sectors of Sepetiba Bay, it could not be considered a limiting factor to the distribution of porcellanid species, according to CCA results. In addition, as well as P. armatus, a species characterized as euryhaline (Coelho 1963(Coelho , 1964Werding, 1978;Micheletti-Flores & Negreiros-Fransozo, 1999), the other porcellanid species occurring in this bay may have certain tolerance to this environmental variable. Werding et al (2003) sublittoral species, which possibly have narrow habitat requirements.…”

“…On the north coast of São Paulo, the porcellanid Pisidia brasiliensis is often found in the subtidal zone, living in association with the bryozoan Schizoporella unicornis (Johnston, 1874) and reefs of Phragmatopoma lapidosa Kinberg, 1867(Micheletti-Flores & Negreiros-Fransozo, 1999. Unlike in Sepetiba Bay, the species was positively correlated with the fine sediment, having been collected under boulders seated upon silty sand in the external sector, which in lower face (in contact with water) have porifers, tubicolous polychaetes and macro algal.…”

Abundância das larvas de Porcellanidae (Decapoda, Anomura) no meroplâncton do estuário do Rio Caeté, estuário amazônico brasileiro

“…A maioria é proveniente de águas costeiras, litorâneas e sublitorâneas, habitando entre algas, corais, esponjas, fissuras de rochas e sob pedras, sendo raro o seu registro em grandes profundidades (Rodriguez, 1980;Veloso, 1999). Os porcelanídeos também são encontrados em associação com outros organismos, por exemplo, habitando galerias do poliqueto Phragmatopoma lapidosa Kimberg (1867) e sendo parasitados pelo isópode Aporobopyrus curtatus (Richardson, 1904) (Pinheiro et al, 1997;Oliveira & Masunari, 1998;Micheletti-Flores & Negreiros-Fransozo, 1999;Fransozo & Bertini, 2001;Miranda & Mantelatto, 2010).…”

PRIMEIRO REGISTRO DE Pisidia brasiliensis HAIG IN RODRIGUES DA COSTA, 1968 PARA O LITORAL DE SANTA CATARINA, BRASIL: (DECAPODA: PORCELLANIDAE)

“…A espécie é encontrada em águas rasas, em fundos de areia e sob pedras (Ferreira, 2010). Micheletti-Flores & Negreiros-Fransozo (1999) encontraram também em recifes de Phragmatopoma lapidosa Kinberg, 1867.…”