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JUVENILE SOCIAL ASSOCIATION OF SOUTHERN SEA LION, OTARIA FLAVESCENS (SHAW, 1800) IN REHABILITATION IN COAST OF LIMA, PERU

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Author(s): Davis Cortegana-Arias | José Iannacone

Journal: The Biologist (Lima)
ISSN 1816-0719

Volume: 10;
Issue: 2;
Start page: 105;
Date: 2012;
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Keywords: cooperation | ethogram | Otaria | rehabilitation | social association

ABSTRACT
Group living and social association are activities that can bring benefits and detriments depending on the species. These costs are balanced in highly social species, such as otariids, which choose to live in groups to benefit from social learning and reproductive success. Sea lion rehabilitation can provide an opportunity to watch these animals in a controlled environment and analyze what leads to this association and encourage it. Two South American sea lions [Otaria flavescens (Shaw, 1800)] of one and two years of age were selected from the ORCA (Organization for Research and Conservation of Aquatic Animals) rehabilitation base, and were tested to determine the conditions of the association and to eliminate human influence bias in their behavior. Twenty five behaviors were recorded through ethograms in 127 h of interaction. Also, during the human influence tests three cooperation behaviors were observed. Additionally, the interaction between individuals was agonistic, and outside of human interaction they always were at maximum distance. Finally, we note that since individuals only cooperated under influence of the human influence tests, it may be that they understand long term cooperation as in primates.
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