Artículos de revistas
Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries
Composición de la dieta del delfín franciscana Pontoporia blainvillei en el sur de la provincia de Buenos Aires, Argentina y su interacción con las pesquerías
Fecha
2014-08Registro en:
Cappozzo, Humberto Luis; Bastida, Ricardo Oscar; Rodriguez, Diego Horacio; Negri, Maria Fernanda; Denuncio, Pablo Ezequiel; Paso Viola, María Natalia; et al.; Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries; Instituto de Oceanología; Revista de Biología Marina y Oceanografía; 49; 2; 8-2014; 393-400
0717-3326
0718-1957
CONICET Digital
CONICET
Autor
Paso Viola, María Natalia
Denuncio, Pablo Ezequiel
Negri, Maria Fernanda
Rodriguez, Diego Horacio
Bastida, Ricardo Oscar
Cappozzo, Humberto Luis
Resumen
The present study provides information about prey species consumed by franciscana dolphin, Pontoporia blainvillei, from southern Buenos Aires coast in Argentina. We collected 66 franciscana dolphins between 2003 to 2011 incidentally entangled in the artisanal fishing nets. We analyzed the stomach contents and estimated prey size in order to evaluate size overlapping with fisheries. Although remains corresponded to 11 prey species, only two were important in the diet, the striped weakfish, Cynoscion guatucupa, and the squid, Loligo sanpaulensis. Almost all prey present in the diet are of commercial interest. The overlapping of target species and prey that are subject to overfishing could enhance the vulnerability of franciscana by reducing food availability.