Cláudio Gonçalves Tiago

Malacofauna marinha da região costeira do Canal de São Sebastião, SP, Brasil: Gastropoda, Bivalvia, Polyplacophora e Scaphopoda

Um levantamento faunistico dos moluscos marinhos do Canal de Sao Sebastiao foi realizado entre junho de 1982 e fevereiro de 1983. Um total de 195 especies foram encontradas: 103 gastropodes, 87 bivalves, 4 quitons e 1 escafopodo. 140 especies pertecem a fauna caribeana, 22 sao cosmopolitas ou circuntropicais, 13 sao endemicas da costa brasileira e 10 pertecem a fauna patagonica. A maioria das especies foi encontrada na regiao entremares. Sao tambem listadas outras 142 especies de moluscos registradas por outros autores para a regiao e nao reencontradas. Foi notada uma reducao no numero de especies ao se comparar os dados do presente trabalho com dados mais recentes, obtidos por outros autores. Levanta-se a hipotese de que esta situacao e devida a poluicao cronica e outros impactos ambientais.

A faunal survey of the marine molluscs of the Channel of São Sebastião, SP, Brazil: Gastropoda, Bivalvia, Polyplacophora and Scaphopoda

Between June 1982 and February 1983 a survey of the marine molluscs of the Channel of Sao Sebastiao, State of Sao Paulo, was carried out A total of 195 species were found: 103 gastropods, 87 bivalves, 4 chitons, and 1 scaphopod. 140 species belong to the Caribbean fauna, 22 are circumtropical or worldwide in distribution, 13 are endemic to the Brazilian coast, and 10 belong to the Patagonian fauna. Most species (77,6 %) were found in the intertidal zone. 142 species, recorded for the region by other authors and not found in the present survey, are also listed. A reduction in the number of species was also observed comparing the present data (1982-1983) with more recent data from other authors (1987-1989). This situation is probably due to chronic pollution and other environmental impacts.

Latin America Echinoderm Biodiversity and Biogeography: Patterns and Affinities

We investigated the current patterns of diversity by country and by class of echinoderms, and analyzed their biogeographical, depth, and habitat or substratum affinities, using the database of the appendix of this book. Traditionally, the area has been divided into five biogeographical Regions and nine Provinces that cover a wide climate range. Currently, the echinoderm fauna of Latin America and Canary islands is constituted by 1,539 species, with 82 species of Crinoidea, 392 species of Asteroidea, 521 species of Ophiuroidea, 242 species of Echinoidea and 302 species of Holothuroidea. Species richness is highly variable among the different countries. The number of species for the countries is highly dependent on its coast length. The echinoderm fauna of the Panamic, Galapagos and the Chilean regions are biogeographically related. Other regions that are closely related are the Caribbean, West Indian, Lusitania and Brazilian. Cosmopolitan species are an important component in all the regions. Affinities between faunas are a consequence of the combination of climatic and trophic factors, connectivity as a function of distance, currents patterns and historical processes. Moreover, different environmental factors would be responsible for the faunal composition and species distribution at different spatial scales. The bathymetrical distribution of the echinoderm classes and the species richness varies according to the depth range and the ocean. Most species occurred at depths between 20 and 200 m. The Caribbean-Atlantic regions are richest in shallow depths, while the Pacific coast has higher values in deeper waters. The domination of each class in each substrate and habitat categories also varies differentially along each coast.

Echinoderm from Brazil: Historical Research and the Current State of Biodiversity Knowledge

This chapter aims to present historical development of echinoderm studies and current research in Brazil. Information about the important geographic and oceanographic features of the Brazilian coast is highlighted. Several aspects of taxonomy, distribution, reproduction, development, immunology, physiology and ecology of echinoderms found in both shallow and deep Brazilian waters are compiled and analyzed to show the current state of knowledge.

Revisão sinóptica das espécies brasileiras de ácaros marinhos

Synoptic review of marine Acari species from Brazil The Brazilian species of marine Acari belonging to the families Halacaridae, Tydeidae, Selenoribatidae and Hyadesiidae are presented. The diagnosis of the families, genus and species is given as well as their geographic distributions.