INVESTIGADORES
COSCARELLA Mariano Alberto
artículos
Título:
Feeding aggregation and aggressive interaction between bottlenose (Tursiops truncatus) and Commersons dolphins (Cephalorhynchus commersonii) in Patagonia, Argentina
Autor/es:
COSCARELLA, MARIANO ALBERTO; CRESPO, ENRIQUE ALBERTO
Revista:
Journal of Ethology
Editorial:
Sringer-Japan
Referencias:
Lugar: Tokio; Año: 2010 vol. 28 p. 183 - 187
ISSN:
0289-0771
Resumen:
We report the first recorded interactions between bottlenose dolphin (Tursiops truncatus) and Commersons dolphins (Cephalorhynchus commersonii). The diurnal behavioral patterns of bottlenose dolphins in Bahía Engaño, Argentina, were similar to those described for other coastal populations around the world. The majority of the feeding bouts were recorded near the mouth of the Chubut River. When not feeding near the river, bottlenose dolphins generally swam along the coast, and interactions with Commersons dolphins were recorded very close to the shore on two occasions during a 3-year period. In the first event, both species were feeding on a fish school. The second interaction was aggressive in nature, involving one juvenile and three adult bottlenose dolphins with several Commersons dolphins. Two of the adult bottlenose dolphins attacked the Commersons dolphins. We propose that the observed behavior represented defense of the juvenile bottlenose dolphin