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dc.contributor.author
Gatto, Alejandro Javier  
dc.contributor.author
Yorio, Pablo Martin  
dc.date.available
2018-03-19T14:16:41Z  
dc.date.issued
2016-12  
dc.identifier.citation
Gatto, Alejandro Javier; Yorio, Pablo Martin; Assessing the trophic niche of South American Terns integrating conventional and isotopic methods; Csiro Publishing; Emu; 116; 3; 12-2016; 230-240  
dc.identifier.issn
0158-4197  
dc.identifier.uri
http://hdl.handle.net/11336/39173  
dc.description.abstract
Conventional dietary studies combined with stable isotope analysis allowed the characterisation of the trophic niche of South American Terns (Sterna hirundinacea) breeding in Argentina. Direct observation of prey deliveries during mate- and chick-provisioning showed that the diet of South American Terns comprised at least 18 prey items, mainly pelagic schooling fish with smaller proportions of marine invertebrates. Argentine Anchovy (Engraulis anchoita) was the main fish prey. Adults delivered a higher proportion of fish and smaller prey to their chicks than to their mates. Analysis of stable isotope ratios in blood samples, using Bayesian stable isotope mixing models, indicated that adult Terns used a higher proportion of marine invertebrates for self-feeding than for mate- or chick-provisioning. Analyses of stable isotopes ratios in blood samples from chicks were consistent with the determination of diet from direct observation, and indicated differences from adults in both the proportion of different prey in the diet and trophic niche. In addition, isotopic niche analysis showed that chicks had a significantly higher trophic position compared with self-feeding adults during both mate-provisioning and chick stages. The results highlight the importance of combining stable isotope and conventional methods to adequately assess the food requirements of a population during the breeding season.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Csiro Publishing  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Breeding Diet  
dc.subject
Isotopic Niche  
dc.subject
Patagonia  
dc.subject
Prey Provisioning  
dc.subject
Self-Feeding  
dc.subject
Sterna Hirundinacea.  
dc.subject.classification
Otras Ciencias Biológicas  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.subject.classification
Otras Ciencias Biológicas  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Assessing the trophic niche of South American Terns integrating conventional and isotopic methods  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-03-02T15:01:35Z  
dc.journal.volume
116  
dc.journal.number
3  
dc.journal.pagination
230-240  
dc.journal.pais
Australia  
dc.journal.ciudad
Collingwood  
dc.description.fil
Fil: Gatto, Alejandro Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados Unidos  
dc.journal.title
Emu  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1071/MU15010  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1071/MU15010