Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries
The present study provides information about the diet composition of franciscana dolphin, Pontoporia blainvillei, from southern Buenos Aires coast, Argentina. From 2003 to 2011 we collected 66 franciscana dolphins that were incidentally entangled in artisanal fishing nets. We analyzed the stomach co...
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| Lenguaje: | English |
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Universidad de Valparaíso. Facultad de Ciencias del Mar
2014
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oai:scielo:S0718-195720140002000192014-12-10Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheriesPaso-Viola,María NataliaDenuncio,PabloNegri,María FernandaRodríguez,DiegoBastida,RicardoCappozzo,Humberto Luis Prey species Pontoporia blainvillei southern Buenos Aires fisheries The present study provides information about the diet composition of franciscana dolphin, Pontoporia blainvillei, from southern Buenos Aires coast, Argentina. From 2003 to 2011 we collected 66 franciscana dolphins that were incidentally entangled in artisanal fishing nets. We analyzed the stomach contents and estimated the prey size in order to evaluate the diet composition and the overlapping with fisheries. We identified 11 prey species in the stomach contents; only two of them were important in the diet, the striped weakfish, Cynoscion guatucupa, and the squid, Loligo sanpaulensis. Almost all the prey found in the diet of franciscana dolphins 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.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.49 n.2 20142014-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572014000200019en10.4067/S0718-19572014000200019 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Prey species Pontoporia blainvillei southern Buenos Aires fisheries |
| spellingShingle |
Prey species Pontoporia blainvillei southern Buenos Aires fisheries Paso-Viola,María Natalia Denuncio,Pablo Negri,María Fernanda Rodríguez,Diego Bastida,Ricardo Cappozzo,Humberto Luis Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries |
| description |
The present study provides information about the diet composition of franciscana dolphin, Pontoporia blainvillei, from southern Buenos Aires coast, Argentina. From 2003 to 2011 we collected 66 franciscana dolphins that were incidentally entangled in artisanal fishing nets. We analyzed the stomach contents and estimated the prey size in order to evaluate the diet composition and the overlapping with fisheries. We identified 11 prey species in the stomach contents; only two of them were important in the diet, the striped weakfish, Cynoscion guatucupa, and the squid, Loligo sanpaulensis. Almost all the prey found in the diet of franciscana dolphins 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. |
| author |
Paso-Viola,María Natalia Denuncio,Pablo Negri,María Fernanda Rodríguez,Diego Bastida,Ricardo Cappozzo,Humberto Luis |
| author_facet |
Paso-Viola,María Natalia Denuncio,Pablo Negri,María Fernanda Rodríguez,Diego Bastida,Ricardo Cappozzo,Humberto Luis |
| author_sort |
Paso-Viola,María Natalia |
| title |
Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries |
| title_short |
Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries |
| title_full |
Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries |
| title_fullStr |
Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries |
| title_full_unstemmed |
Diet composition of franciscana dolphin Pontoporia blainvillei from southern Buenos Aires, Argentina and its interaction with fisheries |
| title_sort |
diet composition of franciscana dolphin pontoporia blainvillei from southern buenos aires, argentina and its interaction with fisheries |
| publisher |
Universidad de Valparaíso. Facultad de Ciencias del Mar |
| publishDate |
2014 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572014000200019 |
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