Sharing menus and kids' specials: Inter- and intraspecific differences in stable isotope niches between sympatrically breeding storm-petrels.
Antarctica
Black-bellied storm-petrel
Chick growth rate
Niche partitioning
Stable isotopes
Wilson's storm-petrel
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
01 Aug 2020
01 Aug 2020
Historique:
received:
09
03
2020
revised:
15
04
2020
accepted:
15
04
2020
pubmed:
28
4
2020
medline:
11
7
2020
entrez:
28
4
2020
Statut:
ppublish
Résumé
Species sharing resources are predicted to compete, but co-occurring species can avoid competition through niche partitioning. Here, we investigated the inter- and intra-specific differences using stable isotope analyses in the black-bellied storm-petrel (Fregetta tropica) and the Wilson's storm-petrel (Oceanites oceanicus), breeding sympatrically in maritime Antarctica. We analysed stable carbon, nitrogen and oxygen isotopes in samples representing different life stages; chick down (pre-laying females), chick feather (chick), and adult blood (chick-rearing adults). Pre-laying females had wider stable isotope niches than chicks or chick-rearing adults, due to pre-laying females being free roaming while chick-rearing adults were central-place-foragers. Chicks were fed at a higher trophic level than the adults (higher δ
Identifiants
pubmed: 32339838
pii: S0048-9697(20)32285-3
doi: 10.1016/j.scitotenv.2020.138768
pii:
doi:
Substances chimiques
Isotopes
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
138768Informations de copyright
Copyright © 2020 The Authors. Published by Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.