Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment

Detalhes bibliográficos
Autor(a) principal: Aguayo-Lobo, Anelio
Data de Publicação: 2011
Outros Autores: Acevedo, Jorge, Brito, José Luis, Acuña,Gómes Paola, Bassoi, Manuela, Secchi, Eduardo Resende, Rosa, Luciano Dalla
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da FURG (RI FURG)
Texto Completo: http://repositorio.furg.br/handle/1/2239
Resumo: Sightings of 115 leopard seals, Hydrurga leptonyx, have been recorded along the Chilean coasts from 1927 to 2010. Mostly immature seals occurred in northern and central Chile (18°20´S-39°59´S), especially in winter, while immature and adult individuals of both sexes and in good condition were commonly sighted year-round in glacial areas of southern Chile, especially Tierra del Fuego (south of 53°43´S), suggesting that this Antarctic species can be considered as a regular member of the marine fauna of Chile, with occasionally hauling out on the northern coastline as seasonal vagrants. Keeping in mind data limitation, we discuss some ways of northern dispersion and the year-round presence of animals in the Southern region of South America. These include, respectively: the close proximity of the Fueguian channels with the Antarctic Peninsula facilitated by the northward extension of the Antarctic pack ice during winter and/or through the influence of the Malvinas current; and the suitable habitat of the Fueguian channels, with similar characteristics to the Antarctic environment and locally abundant food resources.
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spelling Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviromentPresença da foca-leopardo, Hydrurga leptonyx (de Blainville, 1820), na costa do Chile: um exemplo da conexão entre Antártica e América do Sul no ambiente marinhoPresencia de la foca leopardo, Hydrurga leptonyx (de Blainville, 1820) en la costa de Chile: un ejemlo de conexión de ambiente marino entre Antártica y América del SurFoca-leopardoChileAmérica do SulOceano AustralLeopard sealSouth AmericaSouthern OceanFoca leopardoAmérica del SurOcéano australSightings of 115 leopard seals, Hydrurga leptonyx, have been recorded along the Chilean coasts from 1927 to 2010. Mostly immature seals occurred in northern and central Chile (18°20´S-39°59´S), especially in winter, while immature and adult individuals of both sexes and in good condition were commonly sighted year-round in glacial areas of southern Chile, especially Tierra del Fuego (south of 53°43´S), suggesting that this Antarctic species can be considered as a regular member of the marine fauna of Chile, with occasionally hauling out on the northern coastline as seasonal vagrants. Keeping in mind data limitation, we discuss some ways of northern dispersion and the year-round presence of animals in the Southern region of South America. These include, respectively: the close proximity of the Fueguian channels with the Antarctic Peninsula facilitated by the northward extension of the Antarctic pack ice during winter and/or through the influence of the Malvinas current; and the suitable habitat of the Fueguian channels, with similar characteristics to the Antarctic environment and locally abundant food resources.Entre 1927 e 2010, 115 focas-leopardo, Hydrurga leptonyx, foram avistadas ao longo da costa Chilena. Na região centro-norte (18°20´S-39°59´S), especialmente no inverno, a maioria dos registros esteve representada por indivíduos imaturos. Indivíduos imaturos e adultos de ambos os sexos ocorreram ao longo do ano, em boas condições físicas, em áreas glaciais da região sul do Chile, especialmente na Terra do Fogo (ao sul de 53°43´S). Nesta revisão, há evidências robustas para sugerir que a espécie é uma visitante regular da fauna Antártica em território austral chileno, ocorrendo eventualmente como vadios sazonais na costa norte do país. Apesar das limitações inerentes aos dados, discutem-se sobre a dispersão da espécie em direção ao norte e subsequente presença de indivíduos na porção austral da América do Sul. Estas incluem respectivamente: a proximidade entre os canais Foguinos e a Península Antártica, favorecida pela expansão da capa de gelo em direção ao norte durante o inverno e/ou pela influência da corrente das Malvinas; o habitat adequado nas canais Foguinos, com características similares àquelas do ambiente Antártico, somado à presença de recursos alimentares localmente abundantes.Entre 1927 y 2010, 115 focas leopardos, Hydrurga leptonyx, han sido registradas a lo largo de la costa chilena. En la región centro-norte (18°20´S-39°59´S), especialmente en invierno, la mayoría de los registros corresponden a individuos inmaduros; mientras que ejemplares maduros e inmaduros de ambos sexos y en buenas condiciones físicas son avistados durante todo el año, en áreas de glaciares del sur de Chile, especialmente en Tierra del Fuego (sur de los 53°43´S), sugiriendo que esta especie antártica puede ser considerado como un miembro regular de la fauna marina de Chile, con presencia ocasional en las costas norteñas, como vagabundo estacional. Teniendo en cuenta la limitación de los datos, discutimos algunas vías de dispersión hacia el norte y la presencia durante todo el año de los animales en la región austral de América del Sur. Estas incluyen, respectivamente: la cercana proximidad de los canales fueguinos con la Península Antártica, facilitado por la extensión hacia el norte del hielo marino antártico durante el invierno y/o a través de la influencia de la corriente de las Malvinas; y el hábitat apropiado de los canales fueguinos, con características similares al ambiente Antártico y abundante recursos alimenticios locales.2012-07-31T23:36:50Z2012-07-31T23:36:50Z2011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfAGUAYO-LOBO, Anelio Aguaio et al. Presence of the Leopard, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the antarctica - south america connection in the marine enviroment. Oecologia Brasiliensis (Impresso), v. 15, n. 1, p. 69-85, 2011. Disponivel em: <http://www.oecologiaaustralis.org/ojs/index.php/oa/article/view/oeco.2011.1501.07/500>. Acesso em: 16 jul. 2012.http://repositorio.furg.br/handle/1/2239engAguayo-Lobo, AnelioAcevedo, JorgeBrito, José LuisAcuña,Gómes PaolaBassoi, ManuelaSecchi, Eduardo ResendeRosa, Luciano Dallainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURG2014-08-21T12:29:43Zoai:repositorio.furg.br:1/2239Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2014-08-21T12:29:43Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false
dc.title.none.fl_str_mv Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment
Presença da foca-leopardo, Hydrurga leptonyx (de Blainville, 1820), na costa do Chile: um exemplo da conexão entre Antártica e América do Sul no ambiente marinho
Presencia de la foca leopardo, Hydrurga leptonyx (de Blainville, 1820) en la costa de Chile: un ejemlo de conexión de ambiente marino entre Antártica y América del Sur
title Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment
spellingShingle Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment
Aguayo-Lobo, Anelio
Foca-leopardo
Chile
América do Sul
Oceano Austral
Leopard seal
South America
Southern Ocean
Foca leopardo
América del Sur
Océano austral
title_short Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment
title_full Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment
title_fullStr Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment
title_full_unstemmed Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment
title_sort Presenc of the leopard seal, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the Antarctica - south America connection in the marine enviroment
author Aguayo-Lobo, Anelio
author_facet Aguayo-Lobo, Anelio
Acevedo, Jorge
Brito, José Luis
Acuña,Gómes Paola
Bassoi, Manuela
Secchi, Eduardo Resende
Rosa, Luciano Dalla
author_role author
author2 Acevedo, Jorge
Brito, José Luis
Acuña,Gómes Paola
Bassoi, Manuela
Secchi, Eduardo Resende
Rosa, Luciano Dalla
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Aguayo-Lobo, Anelio
Acevedo, Jorge
Brito, José Luis
Acuña,Gómes Paola
Bassoi, Manuela
Secchi, Eduardo Resende
Rosa, Luciano Dalla
dc.subject.por.fl_str_mv Foca-leopardo
Chile
América do Sul
Oceano Austral
Leopard seal
South America
Southern Ocean
Foca leopardo
América del Sur
Océano austral
topic Foca-leopardo
Chile
América do Sul
Oceano Austral
Leopard seal
South America
Southern Ocean
Foca leopardo
América del Sur
Océano austral
description Sightings of 115 leopard seals, Hydrurga leptonyx, have been recorded along the Chilean coasts from 1927 to 2010. Mostly immature seals occurred in northern and central Chile (18°20´S-39°59´S), especially in winter, while immature and adult individuals of both sexes and in good condition were commonly sighted year-round in glacial areas of southern Chile, especially Tierra del Fuego (south of 53°43´S), suggesting that this Antarctic species can be considered as a regular member of the marine fauna of Chile, with occasionally hauling out on the northern coastline as seasonal vagrants. Keeping in mind data limitation, we discuss some ways of northern dispersion and the year-round presence of animals in the Southern region of South America. These include, respectively: the close proximity of the Fueguian channels with the Antarctic Peninsula facilitated by the northward extension of the Antarctic pack ice during winter and/or through the influence of the Malvinas current; and the suitable habitat of the Fueguian channels, with similar characteristics to the Antarctic environment and locally abundant food resources.
publishDate 2011
dc.date.none.fl_str_mv 2011
2012-07-31T23:36:50Z
2012-07-31T23:36:50Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv AGUAYO-LOBO, Anelio Aguaio et al. Presence of the Leopard, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the antarctica - south america connection in the marine enviroment. Oecologia Brasiliensis (Impresso), v. 15, n. 1, p. 69-85, 2011. Disponivel em: <http://www.oecologiaaustralis.org/ojs/index.php/oa/article/view/oeco.2011.1501.07/500>. Acesso em: 16 jul. 2012.
http://repositorio.furg.br/handle/1/2239
identifier_str_mv AGUAYO-LOBO, Anelio Aguaio et al. Presence of the Leopard, Hydrurga leptonyx (de Blaincille, 1820), on the coast of Chile: an example of the antarctica - south america connection in the marine enviroment. Oecologia Brasiliensis (Impresso), v. 15, n. 1, p. 69-85, 2011. Disponivel em: <http://www.oecologiaaustralis.org/ojs/index.php/oa/article/view/oeco.2011.1501.07/500>. Acesso em: 16 jul. 2012.
url http://repositorio.furg.br/handle/1/2239
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da FURG (RI FURG)
instname:Universidade Federal do Rio Grande (FURG)
instacron:FURG
instname_str Universidade Federal do Rio Grande (FURG)
instacron_str FURG
institution FURG
reponame_str Repositório Institucional da FURG (RI FURG)
collection Repositório Institucional da FURG (RI FURG)
repository.name.fl_str_mv Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)
repository.mail.fl_str_mv
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