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dc.contributor.author
Lancelotti, Julio Lucio  
dc.contributor.author
Bandieri, Lucas Martín  
dc.contributor.author
Pascual, Miguel Alberto  
dc.date.available
2016-05-10T20:38:44Z  
dc.date.issued
2015-10  
dc.identifier.citation
Lancelotti, Julio Lucio; Bandieri, Lucas Martín; Pascual, Miguel Alberto; Diet of the exotic Rainbow Trout in the critical habitat of the threatened Hooded Grebe; EDP Sciences; Knowledge and Management of Aquatic Ecosystems; 416; 26; 10-2015; 1-11  
dc.identifier.issn
1961-9502  
dc.identifier.uri
http://hdl.handle.net/11336/5612  
dc.description.abstract
The lakes of the basaltic plateaus of Patagonia represent the only reproductive habitat for the critically endangered Hooded Grebe (Podiceps gallardoi). More than 50 of these naturally fishless lakes have been stocked with the exotic Rainbow Trout (Oncorhynchus mykiss). While the available information suggests that the diet composition of trout and Hooded Grebes could overlap, to date no formal studies of the diet of Rainbow Trout in these aquatic environments have been published. We characterized the diet of trout in one of the primary reproductive areas of the Hooded Grebe based on the analysis of the gut contents of 177 individuals, from 9 lakes. Amphipods were clearly the most dominant group of prey, quantified as frequency of occurrence and proportion by weight. The condition factor of trout and the abundance of amphipods in the stomach contents showed a functional relationship, suggesting that the wellness of trout depends on the availability of this prey. Amphipods also represent a primary prey for the Hooded Grebe, suggesting a strong dietary overlap with the trout. The presence of trout may generate processes of competition that could affect the survival of the Hooded Grebe. This interaction may be particularly relevant in large vegetated lakes, where the Hooded Grebe reproduces.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
EDP Sciences  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
AQUACULTURE  
dc.subject
DIETARY OVERLAP  
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EXOTIC SPECIES  
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PATAGONIA  
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SPECIES INTERACTIONS  
dc.subject.classification
Ecología  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Diet of the exotic Rainbow Trout in the critical habitat of the threatened Hooded Grebe  
dc.title
Régime alimentaire de la truite arc-en-ciel introduite dans l’habitat essentiel du grèbe mitré menacé  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2016-04-28T14:51:41Z  
dc.journal.volume
416  
dc.journal.number
26  
dc.journal.pagination
1-11  
dc.journal.pais
Francia  
dc.journal.ciudad
Paris  
dc.description.fil
Fil: Lancelotti, Julio Lucio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Bandieri, Lucas Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia Austral; Argentina  
dc.journal.title
Knowledge and Management of Aquatic Ecosystems  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.kmae-journal.org/articles/kmae/abs/2015/01/kmae150057/kmae150057.html  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/kmae/2015022