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
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...
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ftconicet:oai:ri.conicet.gov.ar:11336/94842 2023-10-09T21:45:57+02:00 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 Valenzuela, Alejandro Eduardo Jorge Raya Rey, Andrea Nélida Fasola, Laura Saenz Samaniego, Ricardo Andres Schiavini, Adrian Carlos Miguel application/pdf http://hdl.handle.net/11336/94842 eng eng Elsevier Gmbh info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mambio.2012.11.007 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1616504712003072 http://hdl.handle.net/11336/94842 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 1616-5047 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ CONSERVATION DIET EXOTIC PREDATOR SUB-ANTARCTIC TIERRA DEL FUEGO ARCHIPELAGO https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.mambio.2012.11.007 2023-09-24T18:29:26Z 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. Fil: Valenzuela, Alejandro Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Fasola, Laura. Consejo Nacional de Investigaciones ... Article in Journal/Newspaper Antarc* Antarctic Tierra del Fuego CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Austral Argentina Nélida ENVELOPE(-57.167,-57.167,-63.367,-63.367) Mammalian Biology 78 2 104 110 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
CONSERVATION DIET EXOTIC PREDATOR SUB-ANTARCTIC TIERRA DEL FUEGO ARCHIPELAGO https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
CONSERVATION DIET EXOTIC PREDATOR SUB-ANTARCTIC TIERRA DEL FUEGO ARCHIPELAGO https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 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 |
topic_facet |
CONSERVATION DIET EXOTIC PREDATOR SUB-ANTARCTIC TIERRA DEL FUEGO ARCHIPELAGO https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
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. Fil: Valenzuela, Alejandro Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Fasola, Laura. Consejo Nacional de Investigaciones ... |
format |
Article in Journal/Newspaper |
author |
Valenzuela, Alejandro Eduardo Jorge Raya Rey, Andrea Nélida Fasola, Laura Saenz Samaniego, Ricardo Andres Schiavini, Adrian Carlos Miguel |
author_facet |
Valenzuela, Alejandro Eduardo Jorge Raya Rey, Andrea Nélida Fasola, Laura Saenz Samaniego, Ricardo Andres Schiavini, Adrian Carlos Miguel |
author_sort |
Valenzuela, Alejandro Eduardo Jorge |
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 |
title_short |
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 |
title_full |
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 |
title_fullStr |
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 |
title_full_unstemmed |
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 |
title_sort |
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 |
publisher |
Elsevier Gmbh |
url |
http://hdl.handle.net/11336/94842 |
long_lat |
ENVELOPE(-57.167,-57.167,-63.367,-63.367) |
geographic |
Antarctic Austral Argentina Nélida |
geographic_facet |
Antarctic Austral Argentina Nélida |
genre |
Antarc* Antarctic Tierra del Fuego |
genre_facet |
Antarc* Antarctic Tierra del Fuego |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mambio.2012.11.007 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1616504712003072 http://hdl.handle.net/11336/94842 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 1616-5047 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.mambio.2012.11.007 |
container_title |
Mammalian Biology |
container_volume |
78 |
container_issue |
2 |
container_start_page |
104 |
op_container_end_page |
110 |
_version_ |
1779321609307291648 |