Population-specific sex and size variation in long-term foraging ecology of belugas and narwhals.
Arctic cetaceans
carbon
nitrogen
stable isotopes
Journal
Royal Society open science
ISSN: 2054-5703
Titre abrégé: R Soc Open Sci
Pays: England
ID NLM: 101647528
Informations de publication
Date de publication:
03 Feb 2021
03 Feb 2021
Historique:
entrez:
11
5
2021
pubmed:
12
5
2021
medline:
12
5
2021
Statut:
epublish
Résumé
Intraspecific variation in resource use by individuals of different age, sex or size may reflect differing energetic requirements and physiological constraints. Males and females often show differences in diet owing to sexual size dimorphism, different life histories and/or habitat use. Here, we investigate how sex and size influence the long-term foraging ecology of belugas and narwhals in Greenland, using stable isotopes of carbon and nitrogen from bone collagen. We show that males have a higher trophic level and a larger ecological niche than females in West Greenland belugas and in East Greenland narwhals. In addition, for these two populations, we find that
Identifiants
pubmed: 33972883
doi: 10.1098/rsos.202226
pii: rsos202226
pmc: PMC8074634
doi:
Banques de données
figshare
['10.6084/m9.figshare.c.5280416']
Types de publication
Journal Article
Langues
eng
Pagination
202226Informations de copyright
© 2021 The Authors.
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