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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.13 no.2 Curitiba  1996

https://doi.org/10.1590/S0101-81751996000200019 

Lista comentada e ilustrada dos Caecidae (Mollusca, Prosobranchia, Mesogastropoda) da Operação Oceanográfica Geomar XII

 

Commented and illustrated list of the Caecidae (Mollusca, Prosobranchia, Mesogastropoda) from Oceanographic Operation Geomar XII

 

 

Renata dos Santos GomesI; Ricardo Silva AbsalãoI,II

IDepartamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro. 21941-570 Rio de Janeiro, Rio de Janeiro, Brasil
IIPesquisador do CNPq

 

 


ABSTRACT

The family Caecidae deserved special attention, among mollusks, because they occurred in more than 50% of studied stations in Oceanographic Operation Geomar XII, which was carried out in northern and southern coasts of Rio de Janeiro and Espírito Santo States (Brazil), respectively. At the time, Caecum brasilicum Folin, 1874, C. aff condylum Moore, 1969, C. circumvolutum Folin, 1867, C. johnsoni Winkley, 1908, C. someri Folin, 1867, C. striatum Folin, 1868, C. venosum Folin, 1867, C. floridanum Stimpson, 1851, C. massambabensis Absalão, 1994, C. butoti Jong & Coomans, 1989, C. ryssotitum Folin, 1867, C. nitidum (Stimpson., 1851) e C. cubitatum (Folin, 1868) were identitíed. C. venosum is reported, for the first time, since its original description, enlarging its occurrence area from Pernambuco to Rio de Janeiro; C. buloti as well, primarily restricted to Dutch Antilles, begins to make part of the Brazilian malacofauna. C. someri and C. butoti were pointed out for being largely non-sintopic with other congeneric species, suggesting that subtile differences in sediment can be responsable for this segregation.

Key words: Mesogastropoda, Caecidae, Caecum, taxonomy, geographic distribution, sintopy


 

 

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

 

 

AGRADECIMENTOS. Ao Dr. Serge Gotas do Museu de História Natural de Paris, pelo empréstimo dos tipos descritos por Folin; ao Dr. Robert Moolembeeck do Museu de Zoologia de Amsterdam, pelo empréstimo dos tipos de Caecum butoti; ao Dr. Jose Henrique Leal da Universidade de Miami, pelo empréstimo do tipo de Caecum condylum e do exemplar de Caecum pulchellum. Ao Prof. Eliézer de Carvalho Rios do Museu Oceanográfico Prof. Eliézer de Carvalho Rios, Rio Grande, pelo envio de parte da literatura e de material malacológico suplementar. Ao biólogo Paulo Márcio Costa, pela confecção do mapa; ao biólogo Paulino Soares de Souza Júnior, pelas sugestões ao texto final; ao Dr. Eduardo Koutsoukos, diretor do SEBIPE-DIVEX, CENPES -PETROBRÁS, pelo acesso ao microscópio eletrônico de varredura; ao LAGEMAR -UFF pelo acesso aos dados sedimentológicos. A Fundação Universitária José Bonifácio (UFRJ) e ao CNPq que suportaram parcialmente este trabalho.

 

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Recebido em 08.XII.1995; aceito em 17.X.1996.

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