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Additional Records of the American Elephantfish <i>Callorhinchus callorynchus</i> (Chondrichthyes, Holocephali, Chimaeriformes) in Southeastern Brazil
Laboratório de Biodiversidade, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
Universidade Federal do Maranhão (UFMA), Laboratório de Organismos Aquáticos, Departamento de Oceanografia e Limnologia, São Luís, MA, Brazil
Universidade Federal do Maranhão (UFMA), Curso de Engenharia de Pesca, Pinheiro, MA, Brazil
Universidade Federal do Maranhão (UFMA), Laboratório de Organismos Aquáticos, Departamento de Oceanografia e Limnologia, São Luís, MA, Brazil
Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos (GEMM-Lagos), Araruama, RJ, Brazil
Departamento de Ciências Biológicas, Programa de Pós-graduação em Etnobiologia e Conservação da Natureza, Universidade Federal Rural de Pernambuco (UFRuPE), Campus Dois Irmãos, Recife, PE, Brazil
Setor de Mamíferos, Departamento de Vertebrados, Museu Nacional/UFRJ, Rio de Janeiro, RJ, Brazil
- 1 Laboratório de Biodiversidade, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
- 2 Universidade Federal do Maranhão (UFMA), Laboratório de Organismos Aquáticos, Departamento de Oceanografia e Limnologia, São Luís, MA, Brazil
- 3 Universidade Federal do Maranhão (UFMA), Curso de Engenharia de Pesca, Pinheiro, MA, Brazil
- 4 Universidade Federal do Maranhão (UFMA), Laboratório de Organismos Aquáticos, Departamento de Oceanografia e Limnologia, São Luís, MA, Brazil
- 5 Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos (GEMM-Lagos), Araruama, RJ, Brazil
- 6 Departamento de Ciências Biológicas, Programa de Pós-graduação em Etnobiologia e Conservação da Natureza, Universidade Federal Rural de Pernambuco (UFRuPE), Campus Dois Irmãos, Recife, PE, Brazil
- 7 Setor de Mamíferos, Departamento de Vertebrados, Museu Nacional/UFRJ, Rio de Janeiro, RJ, Brazil
Natural Resources·Volume 11 (2020)·Pages 439–445·Published 12 October 2020·DOI10.4236/nr.2020.1110026
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Abstract
Chimaeras , fish in the order Chimaeriformes, are among the rarest and least studied fish in the class Chondrichthyes (cartilaginous fish). Previous records have indicated that a species of chimaera known as the elephantfish, or cockfish, Callorhinchus callorynchus , may be found in marine waters off southeastern Brazil, as far north as the state of S ã o Paulo. Here we report that C. callorynchus , caught with bottom gillnet, was found in an urban fish market in the city of Rio de Janeiro (~23 ˚ S). This and other records from a variety of places call into question the distribution limits of the American elephantfish in the southwestern Atlantic Ocean and whether, at least seasonally, this species may often be found as far north as the state of Rio de Janeiro. Because of scientific and conservation interests in the poorly known Chimaeriformes, we recommend long-term monitoring of the fish catch in ports along the southern Brazilian coast, to better understand the natural history of the intriguing chimeras.
KeywordsCallorhinchus CallorynchusAmerican ElephantfishHolocephaliChimaeraBycatchSouthwest Atlantic Ocean
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