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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.18 no.1 Curitiba Mar. 2001

http://dx.doi.org/10.1590/S0101-81752001000100021 

Distribution of the species of Dipturus Rafinesque (Rajidae, Rajinae, Rajini) off Brazil and first record of the Caribbean skate D. teevani (Bigelow & Schroeder), in the Western South Atlantic

 

 

Ulisses Leite Gomes; Simone da Silva Picado

Departamento de Biologia Animal e Vegetal, Instituto de Biologia, Universidade do Estado do Rio de Janeiro. Rua São Francisco Xavier 524,20559-900 Rio de Janeiro, Rio de Janeiro, Brasil. E-mail: ulisses@uerj.br

 

 


ABSTRACT

The Caribbean skate Dipturus teevani (Bigelow & Schroeder, 1951) is recorded for the first time from Brazilian waters. The specimen was collected in the continental slope off Bahia State. With this record, four species of Dipturus Rafinesque, 1810 are known from Brazil: D. chilensis (Guichenot, 1848), D. leptocauda (Kreft & Stehmann, 1975), D. trachyderma (Krefft & Stehmann, 1975) and D. teevani (Bigelow & Schroeder, 1951). They are typical inhabitants of deep waters between the outer shelf edge (195-200m) and the slope (more than 500m). Although morphologically conservative, the species of Dipturus can be distinguished from each other by the number of dorsal and nuchal thorns, the number of caudal thorns, dorsal and ventral spinulation and specific total length. An identification key for the species of Dipturus recorded from Brazil is presented.

Key words: Rajidae, Dipturus, distribution, Brazil


 

 

Full text available only in PDF format.

 

 

ACKNOWLEDGEMENT. The authors would like to thank Dr. Carolus Vooren (Fundação Universidade do Rio Grande); Drs. Zilda Lucena and Carlos Lucena (Museu de Ciências e Tecnologia da PUC; Rio Grande do Sul); Dr. José Figueiredo (Museu de Zoologia da USP); Dr. Gustavo Nunan (Museu Nacional do Rio de Janeiro); and Gustavo Chiaramonte (Museo Argentino de Ciencias Naturales "Bernardino Rivadavia") for the loan of specimens or access to the fish collections under their care. Oceanographer Acácio Tomás (Instituto de Pesca de Santos) and Dr. Rosângela Lessa (Universidade Federal Rural de Pernambuco), for providing respectively infoimation on two specimens of D. trachyderma and on the occurrence of Dipturus in Pernambuco. MSc Frieda Marti who translated papers from German articles. Dr. Paulo Brito, Biologist Hugo Santos (Universidade do F.stado do Rio de Janeiro) and Dr. Gustavo Nunan, who kindly reviewed the manuscript and suggested pertinent improvements. Biologist Hugo Santos helped with the map on figure 2.

 

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Recebido em 02.III.2000; aceito em 05.IV.2001.

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