ON THE OCCURRENCE OF SEVENGILL AND SIXGILL SHARKS (HEXANCHIFORMES: HEXANCHIDAE) OFF CEARÁ STATE, BRAZIL, WESTERN EqUATORIAL ATLANTIC

Autores/as

  • Jones Santander Neto Departamento de Engenharia de Pesca, Universidade Federal do Ceará
  • Bruno Jucá Queiroz Departamento de Engenharia de Pesca, Universidade Federal do Ceará
  • Francisco Carlos Pereira Nascimento Departamento de Engenharia de Pesca, Universidade Federal do Ceará
  • Manuel Antônio de Andrade Furtado Neto Departamento de Engenharia de Pesca, Universidade Federal do Ceará Instituto de Ciências do Mar
  • Thiago Holanda Basílio Departamento de Engenharia de Pesca, Universidade Federal do Ceará
  • Ricardo Silveira de Medeiros Departamento de Engenharia de Pesca; Universidade Federal do Ceará
  • Vicente Vieira Faria Instituto de Ciências do Mar, Universidade Federal do Ceará; Pesquisador bolsista DCR CNPq/FUNCAP.

DOI:

https://doi.org/10.32360/acmar.v40i2.6113

Palabras clave:

Hexanchiformes, Heptranchias, Hexanchus, first record, Ceará State

Resumen

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 needfor thorough deep-sea research surveys in order to obtain a more complete assessment of the region’s elasmobranch fauna.

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Publicado

2007-12-01

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