Sobre a ocorrência dos tubarões-de-sete-guelras e deseis-guelras (Hexanchiformes: Hexanchidae) no Estado do Ceará, Brasil, Atlântico Equatorial Ocidental
This study reports the first occurrence of Hexanchiformes sharks off Ceará State, Brazil. Captures of sharks of this order were recorded during research cruises and surveillance of landings from small-scale and commercial fisheries, making up thirteen individuals out of a total of 1,937. The samplin...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | Brasil |
| Institución: | Universidade Federal do Ceará (UFC) |
| Repositorio: | Repositório Institucional da Universidade Federal do Ceará (UFC) |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.ufc.br:riufc/53819 |
| Acceso en línea: | http://www.repositorio.ufc.br/handle/riufc/53819 |
| Access Level: | acceso abierto |
| Palabra clave: | Espécie-Hexanchiformes Espécie- Heptranchias Ceará- Tubarões |
| Sumario: | This study reports the first occurrence of Hexanchiformes sharks off Ceará State, Brazil. Captures of sharks of this order were recorded during research cruises and surveillance of landings from small-scale and commercial fisheries, making up thirteen individuals out of a total of 1,937. The sampling effort covered an area corresponding with the continental shelf and upper slope, in depths from 10 to 350 meters. These are the first data gathered on the occurrence of sharks in the mesopelagic zone of Ceará State. This study extends the known distribution range of hexanchiformes in Brazil. The observed depth stratification pattern of hexanchiform shark occurrences off Ceará State underscores the need for thorough deep-sea research surveys in order to obtain a more complete assessment of the region’s elasmobranch fauna. |
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