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dc.contributor.author
Valenzuela, Alejandro Eduardo Jorge
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dc.contributor.author
Raya Rey, Andrea Nélida
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dc.contributor.author
Fasola, Laura
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dc.contributor.author
Saenz Samaniego, Ricardo Andres
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dc.contributor.author
Schiavini, Adrian Carlos Miguel
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dc.date.available
2020-01-15T20:48:37Z
dc.date.issued
2013-02
dc.identifier.citation
Valenzuela, Alejandro Eduardo Jorge; Raya Rey, Andrea Nélida; Fasola, Laura; Saenz Samaniego, Ricardo Andres; Schiavini, Adrian Carlos Miguel; Trophic ecology of a top predator colonizing the southern extreme of South America: Feeding habits of invasive American mink (Neovison vison) in Tierra del Fuego; Elsevier Gmbh; Mammalian Biology; 78; 2; 2-2013; 104-110
dc.identifier.issn
1616-5047
dc.identifier.uri
http://hdl.handle.net/11336/94842
dc.description.abstract
The American mink (Neovison vison) is a semi-aquatic, generalist carnivore released onto Tierra del Fuego (TDF) Island in the 1940s, subsequently spreading to adjacent islands in the archipelago with potential effects on native prey populations. Knowledge of this new predator's trophic ecology is essential to identify threats, plan control strategies and conserve native fauna. We studied seasonal mink diet in TDF in different habitats. We identified undigested remains from 493 scats collected between May 2005 and March 2009 along marine coasts and freshwater shores (rivers and lakes). Small mammals and fish were the main mink prey in TDF (over 65% of diet items). Seasonal variations were not detected, but diet did vary significantly between marine and freshwater habitats, where more terrestrial items were consumed. Among mammals, mink consumed more small native rodents than exotic species. Native fish consumption was also important with greater representation of species from the families Nototheniidae and Galaxiidae in marine and freshwater habitats respectively. Birds were the third item in importance, but did not constitute a particularly large part of the mink's diet on TDF. Overall, differences found in mink diet between habitats reflected their generalist/opportunistic feeding behaviour and did not differ greatly from observations in its native range or in other areas where it has been introduced. Our results establish the interactions between this novel predator and its prey and also illustrate the need to continue research on native prey populations to quantify mink impact on them and understand the ecological context of this biotic assemblage.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Gmbh
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CONSERVATION
dc.subject
DIET
dc.subject
EXOTIC PREDATOR
dc.subject
SUB-ANTARCTIC
dc.subject
TIERRA DEL FUEGO ARCHIPELAGO
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Trophic ecology of a top predator colonizing the southern extreme of South America: Feeding habits of invasive American mink (Neovison vison) in Tierra del Fuego
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-01-15T19:19:14Z
dc.journal.volume
78
dc.journal.number
2
dc.journal.pagination
104-110
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Valenzuela, Alejandro Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Fasola, Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Saenz Samaniego, Ricardo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Schiavini, Adrian Carlos Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.journal.title
Mammalian Biology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.mambio.2012.11.007
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1616504712003072
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