Temporal variation on the diet of the South American Tern (<i>Sterna hirundinacea</i>, Charadriiformes: Laridae) on its wintering grounds

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dc.contributor.authorAlfaro, Matilde
dc.contributor.authorMauco, Laura
dc.contributor.authorNorbis, Walter
dc.contributor.authorLima, Mauricio
dc.date.accessioned2025-01-20T23:59:34Z
dc.date.available2025-01-20T23:59:34Z
dc.date.issued2011
dc.description.abstractThe diet of the South American Tern (Sterna hirundinacea) and its seasonal variation during the 2005 and 2006 non-reproductive seasons in the Uruguayan Atlantic coast was analyzed. Diet was assessed by the analysis of pellets collected in the Rocha lagoon sandbar, a major tern roosting area in Uruguay, aiming to analyze the hypothesis that terns feed mainly on the Argentine Anchovy (Engraulis anchoita) during the wintering period. A total of 844 pellets were collected, 442 in 2005 and 402 in 2006. Diet was composed of fish (88 %), insects (9 %) and crustaceans (3 %). The main fish species consumed was the Argentine Anchovy (77.7 %), followed by Marini's Anchovy (Anchoa marinii) (7.9 %) and the Striped Weakfish (Cynoscion guatucupa) (3.6 %). Insects and crustaceans were the main items in two of the groups of pellets collected during the study period. Despite this temporal variation in the diet, the Argentine Anchovy was the main prey item consumed during both seasons. These results support the hypothesis that South American Terns strongly depend on anchovies as trophic resource.
dc.fuente.origenWOS
dc.identifier.eissn0717-6317
dc.identifier.issn0716-078X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95298
dc.identifier.wosidWOS:000298514900011
dc.issue.numero3
dc.language.isoen
dc.pagina.final460
dc.pagina.inicio451
dc.revistaRevista chilena de historia natural
dc.rightsacceso restringido
dc.subjectfeeding ecology
dc.subjectmigration
dc.subjecttemporal variation
dc.subjectterns
dc.subjectUruguay
dc.subject.ods15 Life on Land
dc.subject.ods14 Life Below Water
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa14 Vida submarina
dc.subject.odspa13 Acción por el clima
dc.titleTemporal variation on the diet of the South American Tern (<i>Sterna hirundinacea</i>, Charadriiformes: Laridae) on its wintering grounds
dc.typeartículo
dc.volumen84
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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