Embryonic Bicephaly in the Blue Shark, Prionace Glauca, from the Mexican Pacific Ocean.

A case of bicephaly in embryos of the blue shark Prionace glauca in the Mexican Pacific Ocean is described. Malformed female shark embryos were found in pregnant females caught in the Gulf of California (Punta Arenas) and off the western coast of Baja California Sur, Mexico (San Lázaro). Abnormal sh...

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Detalles Bibliográficos
Autores: Galván Magaña, Felipe, Escobar-Sánchez, Ofelia, Carrera-Fernández, Maribel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:México
Institución:Instituto Politécnico Nacional
Repositorio:Repositorio Digital del IPN
OAI Identifier:oai:www.repositoriodigital.ipn.mx:123456789/13723
Acceso en línea:http://www.repositoriodigital.ipn.mx/handle/123456789/13723
Access Level:acceso abierto
Palabra clave:México
Abnormality
Prionace Glauca
Bbicephaly
Descripción
Sumario:A case of bicephaly in embryos of the blue shark Prionace glauca in the Mexican Pacific Ocean is described. Malformed female shark embryos were found in pregnant females caught in the Gulf of California (Punta Arenas) and off the western coast of Baja California Sur, Mexico (San Lázaro). Abnormal sharks showed a symmetric bicephaly that could be caused by the high number of embryos found in the uterus of the blue shark, which is the most fecund species of shark in the world. The abnormality probably began during the embryonic development.