INVESTIGADORES
CRESPO Enrique Alberto
artículos
Título:
Marine mammals´ consumption by broadnose sevengill shark Notorynchus cepedianus in the northern and central patagonian shelf.
Autor/es:
CRESPI ABRIL, A.; GARCIA, N. A.; CRESPO, E. A.; COSCARELLA, M.A.
Revista:
THE LATIN AMERICAN JOURNAL OF AQUATIC MAMMALS
Editorial:
SOLAMAC
Referencias:
Lugar: Rio de Janeiro; Año: 2004 vol. 2 p. 101 - 107
ISSN:
1676-7497
Resumen:
The study of food habits of the
broadnose sevengill shark (Notorynchus
cepedianus) based on the observation of the stomach contents of 22
individuals, revealed the importance of marine mammals as part of the sharks
diet. The analysis showed that marine mammals represent at least 30% of the
total consumed biomass by broadnose sevengill sharks. The frequency of
occurrence was estimated to be 35%. The three pinnipeds with local distribution
and at least two species of cetaceans were consumed. Although consumption of
marine mammal was high, there was no evidence of direct attack on living preys
by N. cepedianus, in Argentine
waters.