Geographical variation in the diet of the Antarctic fur seal <i>Arctocephalus gazella</i>

The diet of non-breeding male Antarctic fur seals <i>Arctocephalus gazella</i> was investigated at different localities of the Antarctic Peninsula (Cierva Point and Hope Bay), South Shetland Islands (Deception Island and Potter Peninsula) and the South Orkney Islands (Laurie Island), by...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Casaux, Ricardo Jorge, Baroni, A., Arrighetti, F., Ramón, Analía Inés, Carlini, Alejandro Ricardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2003
Materias:
Ciencias Naturales
Fish Consumption
Antarctic Peninsula
South Shetland Island
Important Prey
Antarctic Krill
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/132412
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-132412
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Fish Consumption
Antarctic Peninsula
South Shetland Island
Important Prey
Antarctic Krill
spellingShingle Ciencias Naturales
Fish Consumption
Antarctic Peninsula
South Shetland Island
Important Prey
Antarctic Krill
Casaux, Ricardo Jorge
Baroni, A.
Arrighetti, F.
Ramón, Analía Inés
Carlini, Alejandro Ricardo
Geographical variation in the diet of the Antarctic fur seal <i>Arctocephalus gazella</i>
topic_facet Ciencias Naturales
Fish Consumption
Antarctic Peninsula
South Shetland Island
Important Prey
Antarctic Krill
description The diet of non-breeding male Antarctic fur seals <i>Arctocephalus gazella</i> was investigated at different localities of the Antarctic Peninsula (Cierva Point and Hope Bay), South Shetland Islands (Deception Island and Potter Peninsula) and the South Orkney Islands (Laurie Island), by the analysis of 438 scats collected from January to March 2000. The composition of the diet was diverse, with both pelagic and benthic-demersal prey represented in the samples. Antarctic krill <i>Euphausia superba</i> was the most frequent and numerous prey at all the study sites except at Cierva Point, followed by fish, penguins and cephalopods. Antarctic krill also predominated by mass, followed by either fish or penguins. Fish were the second most important prey by mass at the Antarctic Peninsula whereas penguins were the second most important prey by mass at the South Shetland and South Orkney Islands. Among fish, <i>Pleuragramma antarcticum</i> was the most important species in the diet of the Antarctic fur seals at the Antarctic Peninsula whereas <i>Gymnoscopelus nicholsi</i> predominated at the South Shetland and South Orkney Islands. The results are compared with previous studies, and the possibility of implementing monitoring studies on the distribution/abundance of myctophids and <i>P. antarcticum</i> based on the analysis of the diet of the Antarctic fur seal is considered.
format Articulo
Articulo
author Casaux, Ricardo Jorge
Baroni, A.
Arrighetti, F.
Ramón, Analía Inés
Carlini, Alejandro Ricardo
author_facet Casaux, Ricardo Jorge
Baroni, A.
Arrighetti, F.
Ramón, Analía Inés
Carlini, Alejandro Ricardo
author_sort Casaux, Ricardo Jorge
title Geographical variation in the diet of the Antarctic fur seal <i>Arctocephalus gazella</i>
title_short Geographical variation in the diet of the Antarctic fur seal <i>Arctocephalus gazella</i>
title_full Geographical variation in the diet of the Antarctic fur seal <i>Arctocephalus gazella</i>
title_fullStr Geographical variation in the diet of the Antarctic fur seal <i>Arctocephalus gazella</i>
title_full_unstemmed Geographical variation in the diet of the Antarctic fur seal <i>Arctocephalus gazella</i>
title_sort geographical variation in the diet of the antarctic fur seal <i>arctocephalus gazella</i>
publishDate 2003
url http://sedici.unlp.edu.ar/handle/10915/132412
work_keys_str_mv AT casauxricardojorge geographicalvariationinthedietoftheantarcticfursealiarctocephalusgazellai
AT baronia geographicalvariationinthedietoftheantarcticfursealiarctocephalusgazellai
AT arrighettif geographicalvariationinthedietoftheantarcticfursealiarctocephalusgazellai
AT ramonanaliaines geographicalvariationinthedietoftheantarcticfursealiarctocephalusgazellai
AT carlinialejandroricardo geographicalvariationinthedietoftheantarcticfursealiarctocephalusgazellai
bdutipo_str Repositorios
_version_ 1764820456439808001

Ejemplares similares