"Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.

The behavioral strategies developed by predators to capture and kill their prey are fascinating, notably for predators that forage for prey at, or beyond, the boundaries of their ecosystem. We report here the occurrence of a beaching behavior used by an alien and large-bodied freshwater predatory fi...

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Autores principales:	Julien Cucherousset, Stéphanie Boulêtreau, Frédéric Azémar, Arthur Compin, Mathieu Guillaume, Frédéric Santoul
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/275d1192ef044d348ccedec0e769b033
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spelling	oai:doaj.org-article:275d1192ef044d348ccedec0e769b0332021-11-18T08:06:16Z"Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.1932-620310.1371/journal.pone.0050840https://doaj.org/article/275d1192ef044d348ccedec0e769b0332012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23227213/?tool=EBIhttps://doaj.org/toc/1932-6203The behavioral strategies developed by predators to capture and kill their prey are fascinating, notably for predators that forage for prey at, or beyond, the boundaries of their ecosystem. We report here the occurrence of a beaching behavior used by an alien and large-bodied freshwater predatory fish (Silurus glanis) to capture birds on land (i.e. pigeons, Columbia livia). Among a total of 45 beaching behaviors observed and filmed, 28% were successful in bird capture. Stable isotope analyses (δ(13)C and δ(15)N) of predators and their putative prey revealed a highly variable dietary contribution of land birds among individuals. Since this extreme behavior has not been reported in the native range of the species, our results suggest that some individuals in introduced predator populations may adapt their behavior to forage on novel prey in new environments, leading to behavioral and trophic specialization to actively cross the water-land interface.Julien CucheroussetStéphanie BoulêtreauFrédéric AzémarArthur CompinMathieu GuillaumeFrédéric SantoulPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 12, p e50840 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Julien Cucherousset Stéphanie Boulêtreau Frédéric Azémar Arthur Compin Mathieu Guillaume Frédéric Santoul "Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.
description	The behavioral strategies developed by predators to capture and kill their prey are fascinating, notably for predators that forage for prey at, or beyond, the boundaries of their ecosystem. We report here the occurrence of a beaching behavior used by an alien and large-bodied freshwater predatory fish (Silurus glanis) to capture birds on land (i.e. pigeons, Columbia livia). Among a total of 45 beaching behaviors observed and filmed, 28% were successful in bird capture. Stable isotope analyses (δ(13)C and δ(15)N) of predators and their putative prey revealed a highly variable dietary contribution of land birds among individuals. Since this extreme behavior has not been reported in the native range of the species, our results suggest that some individuals in introduced predator populations may adapt their behavior to forage on novel prey in new environments, leading to behavioral and trophic specialization to actively cross the water-land interface.
format	article
author	Julien Cucherousset Stéphanie Boulêtreau Frédéric Azémar Arthur Compin Mathieu Guillaume Frédéric Santoul
author_facet	Julien Cucherousset Stéphanie Boulêtreau Frédéric Azémar Arthur Compin Mathieu Guillaume Frédéric Santoul
author_sort	Julien Cucherousset
title	"Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.
title_short	"Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.
title_full	"Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.
title_fullStr	"Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.
title_full_unstemmed	"Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.
title_sort	"freshwater killer whales": beaching behavior of an alien fish to hunt land birds.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/275d1192ef044d348ccedec0e769b033
work_keys_str_mv	AT juliencucherousset freshwaterkillerwhalesbeachingbehaviorofanalienfishtohuntlandbirds AT stephaniebouletreau freshwaterkillerwhalesbeachingbehaviorofanalienfishtohuntlandbirds AT fredericazemar freshwaterkillerwhalesbeachingbehaviorofanalienfishtohuntlandbirds AT arthurcompin freshwaterkillerwhalesbeachingbehaviorofanalienfishtohuntlandbirds AT mathieuguillaume freshwaterkillerwhalesbeachingbehaviorofanalienfishtohuntlandbirds AT fredericsantoul freshwaterkillerwhalesbeachingbehaviorofanalienfishtohuntlandbirds
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"Freshwater killer whales": beaching behavior of an alien fish to hunt land birds.

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