Diets of hooded seals (Cystophora cristata) in coastal waters and drift ice waters along the east coast of Greenland
Open Access
- 11 June 2007
- journal article
- research article
- Published by Taylor & Francis Ltd in Marine Biology Research
- Vol. 3 (3), 123-133
- https://doi.org/10.1080/17451000701358531
Abstract
To provide data on the diets of hooded seals (Cystophora cristata) in the Greenland Sea, seals were collected for scientific purposes on expeditions conducted in the pack ice belt east of Greenland in September/October 1999, 2002 and 2003 (autumn), July/August in 2000 (summer), and February/March in 2001 and 2002 (winter). The results from analyses of stomach and intestinal contents from captured seals revealed that their diet was comprised of relatively few prey taxa. The squid Gonatus fabricii and polar cod (Boreogadus saida) were particularly important, whereas capelin (Mallotus villosus) and sand eels (Ammodytes spp.) occasionally contributed more. These four prey items constituted 60–97% of the diet biomass. Gonatus fabricii was the most important food item in autumn and winter, whereas polar cod dominated the summer diet, with important contributions from G. fabricii and sand eels. The latter was only observed on the hooded seal menu during the summer period, whereas polar cod, which was an important component during the autumn survey, was almost absent from the winter samples. During the latter survey, capelin also contributed to the hooded seal diet. Samples obtained from hooded seals in more coastal waters indicated a more varied diet based on fish such as polar cod, redfish (Sebastes sp.) and Greenland halibut (Reinhardtius hippoglossoides).Keywords
This publication has 26 references indexed in Scilit:
- Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winterPolar Research, 2004
- Gonatus fabricii(Mollusca, Theuthida) as an important food source for sperm whales(Physeter macrocephalus)in the Northeast AtlanticSarsia, 2003
- Harbour Seal ( Phoca vitulina ) Diet in Vester»len, North NorwaySarsia, 2002
- Capelin (Mallotus villosus) in the Iceland–East Greenland–Jan Mayen ecosystemICES Journal of Marine Science, 2002
- Estimated Prey Consumption by Harp seals (Phoca groenlandica), Hooded seals (Cystophora cristata), Grey seals (Halichoerus grypus) and Harbour seals (Phoca vitulina) in Atlantic CanadaJournal of Northwest Atlantic Fishery Science, 2000
- Stomach contents of sperm whales Physeter macrocephalus stranded in the North Sea 1990-1996Marine Ecology Progress Series, 1999
- Do harp sealsPhoca groenlandicaexhibit particular prey preferences?ICES Journal of Marine Science, 1998
- Transit time of digesta in captive harbour seals (Phoca vitulina)Canadian Journal of Zoology, 1993
- Rate of digestion in three species of pinnipedsCanadian Journal of Zoology, 1984
- Reproduction in the Female Hooded Seal,Cystophora cristataErxleben, at South GreenlandJournal of Northwest Atlantic Fishery Science, 1982