Nom du corpus

Corpus Systématique Animale

Titre du document

Feeding habits of harp seals ( Phoca groenlandica ) during early summer and autumn in the northern Barents Sea

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Poissons_v2b_002970
Auteur(s)
  • K. T. Nilssen 1
  • T. Haug 1
  • V. Potelov 2
  • Y. K. Timoshenko 2
Affiliation(s)
  • 1) Norwegian Institute of Fisheries and Aquaculture, P.O. Box 2511, N-9002, Tromsø, Norway
  • 2) Polar Research Institute of Marine Fisheries and Oceanography(PINRO), 6 Knipovich Street, 183763, Murmansk, Russia
Résumé

The feeding habits of harp seals (Phoca groenlandica) in the Barents Sea were examined in studies conducted during June 1991, September 1990 and 1991, and October 1992. Analyses of stomach and intestinal contents were carried out and concurrent estimates of prey abundance were made using trawl gear. Harp seals appeared to feed at low intensity in the pack ice belt during the first half of June. There was little potential prey in the water column, but prawns (Pandalus borealis), capelin (Mallotus villosus) and polar cod (Boreogadus saida) were abundant close to the bottom. In September, the seals sampled in the northern pack ice areas of the Barents Sea fed on the pelagic amphipod Parathemisto libellula, krill (Thysanoessa spp.), prawns and, to a lesser extent, on fish species such as polar cod, sculpins (Cottidae) and snailfish (Liparidae). Trawling revealed that large quantities of Parathemisto libellala were present in the upper layers of the water column. Fish, mainly capelin and polar cod, were less abundant and occurred in deeper waters. In mid-October, the diet of seals in the northern Barents Sea consisted mainly of amphipods (Parathemisto sp.). Later in October, when increasing pack ice cover forced the harp seals to move south, the diet seemed to change from amphipods to fish prey, predominantly capelin and polar cod.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - General Agricultural and Biological Sciences
Catégories WoS
  • 1 - science ; 2 - ecology
  • 1 - science ; 2 - biodiversity conservation
Identifiant ISTEX
DCE586A7AE64ED8A99E81E864806D5E69FA95EFA
Revue

Polar Biology

Année de publication
1995
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.592
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-76ZF6Z87-Q
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