South American sea lions (Otaria flavescens) and killer whales (Orcinus orca) attending chub mackerel (Scomber japonicus) commercial trawl fisheries over the Patagonian Shelf: a first report

Killer whale-seal interactions have been reported for almost all pinniped species globally. However the literature on offshore interactions between killer whales and sea lions is rare for the South Atlantic, particularly in Argentine waters. Here we report for the first time the harassment of a Sout...

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Bibliographic Details
Published in:Latin American Journal of Aquatic Mammals
Main Authors: Seco Pon, Juan Pablo, Favero, Marco
Format: Article in Journal/Newspaper
Language:English
Published: Sociedad Latinoamericana de Especialistas en Mamíferos Acuáticos (SOLAMAC) 2015
Subjects:
South American sea lion
killer whale
harassment
novel reaction
Argentina
Argentine
Killer Whale
Orca
Orcinus orca
Killer whale
Online Access:http://lajamjournal.org/index.php/lajam/article/view/426
https://doi.org/10.5597/lajam00193
Description
Summary:Killer whale-seal interactions have been reported for almost all pinniped species globally. However the literature on offshore interactions between killer whales and sea lions is rare for the South Atlantic, particularly in Argentine waters. Here we report for the first time the harassment of a South American sea lion (Otaria flavescens) by killer whales (Ornicus orca) while attending commercial fishing vessels in offshore national waters and describe a novel sea lion antipredator behaviour. These observations were made during an ongoing survey to assess seabird-fisheries interactions in the commercial trawl fishery off Argentina.

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