Patterns of intraspecific nest parasitism in the High Arctic common eider ( Somateria mollissima borealis )
Intraspecific nest parasitism was studied during two breeding seasons at two common eider (Somateria mollissima borealis) colonies in Kongsfjord, Svalbard (79°55′N, 12°10′E). The density of breeding eiders differed considerably from year to year and also among colonies. Parasitic eggs were identifie...
Published in: | Canadian Journal of Zoology |
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Canadian Science Publishing
1994
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Online Access: | http://dx.doi.org/10.1139/z94-139 http://www.nrcresearchpress.com/doi/pdf/10.1139/z94-139 |
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crcansciencepubl:10.1139/z94-139 2023-12-17T10:26:11+01:00 Patterns of intraspecific nest parasitism in the High Arctic common eider ( Somateria mollissima borealis ) Bjørn, Tor Harry Erikstad, Kjell Einar 1994 http://dx.doi.org/10.1139/z94-139 http://www.nrcresearchpress.com/doi/pdf/10.1139/z94-139 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 72, issue 6, page 1027-1034 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1994 crcansciencepubl https://doi.org/10.1139/z94-139 2023-11-19T13:38:27Z Intraspecific nest parasitism was studied during two breeding seasons at two common eider (Somateria mollissima borealis) colonies in Kongsfjord, Svalbard (79°55′N, 12°10′E). The density of breeding eiders differed considerably from year to year and also among colonies. Parasitic eggs were identified through deviations from a normal laying pattern. Parasitic eggs (8%) were laid in 16% of the clutches at the dense colony. The corresponding values on the island with low breeding density were 1.6 and 2% in 1989 and 1990, respectively. Parasitic eggs were laid in clutches of all sizes according to their availability. The parasitizing females laid 70% of their eggs during the host's laying period. Parasitic laying occurred despite the constant availability of suitable nest sites. The hosts did not reduce their clutch size in response to egg parasitism. The rate of egg predation was significantly higher in parasitized than in nonparasitized nests. Parasitic eggs were laid late in the breeding period, suggesting that birds which were immature, in poor body condition, or had previously failed are salvaging some reproductive effort. Article in Journal/Newspaper Arctic Common Eider Kongsfjord* Somateria mollissima Svalbard Canadian Science Publishing (via Crossref) Arctic Svalbard Kongsfjord ENVELOPE(29.319,29.319,70.721,70.721) Canadian Journal of Zoology 72 6 1027 1034 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Bjørn, Tor Harry Erikstad, Kjell Einar Patterns of intraspecific nest parasitism in the High Arctic common eider ( Somateria mollissima borealis ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Intraspecific nest parasitism was studied during two breeding seasons at two common eider (Somateria mollissima borealis) colonies in Kongsfjord, Svalbard (79°55′N, 12°10′E). The density of breeding eiders differed considerably from year to year and also among colonies. Parasitic eggs were identified through deviations from a normal laying pattern. Parasitic eggs (8%) were laid in 16% of the clutches at the dense colony. The corresponding values on the island with low breeding density were 1.6 and 2% in 1989 and 1990, respectively. Parasitic eggs were laid in clutches of all sizes according to their availability. The parasitizing females laid 70% of their eggs during the host's laying period. Parasitic laying occurred despite the constant availability of suitable nest sites. The hosts did not reduce their clutch size in response to egg parasitism. The rate of egg predation was significantly higher in parasitized than in nonparasitized nests. Parasitic eggs were laid late in the breeding period, suggesting that birds which were immature, in poor body condition, or had previously failed are salvaging some reproductive effort. |
format |
Article in Journal/Newspaper |
author |
Bjørn, Tor Harry Erikstad, Kjell Einar |
author_facet |
Bjørn, Tor Harry Erikstad, Kjell Einar |
author_sort |
Bjørn, Tor Harry |
title |
Patterns of intraspecific nest parasitism in the High Arctic common eider ( Somateria mollissima borealis ) |
title_short |
Patterns of intraspecific nest parasitism in the High Arctic common eider ( Somateria mollissima borealis ) |
title_full |
Patterns of intraspecific nest parasitism in the High Arctic common eider ( Somateria mollissima borealis ) |
title_fullStr |
Patterns of intraspecific nest parasitism in the High Arctic common eider ( Somateria mollissima borealis ) |
title_full_unstemmed |
Patterns of intraspecific nest parasitism in the High Arctic common eider ( Somateria mollissima borealis ) |
title_sort |
patterns of intraspecific nest parasitism in the high arctic common eider ( somateria mollissima borealis ) |
publisher |
Canadian Science Publishing |
publishDate |
1994 |
url |
http://dx.doi.org/10.1139/z94-139 http://www.nrcresearchpress.com/doi/pdf/10.1139/z94-139 |
long_lat |
ENVELOPE(29.319,29.319,70.721,70.721) |
geographic |
Arctic Svalbard Kongsfjord |
geographic_facet |
Arctic Svalbard Kongsfjord |
genre |
Arctic Common Eider Kongsfjord* Somateria mollissima Svalbard |
genre_facet |
Arctic Common Eider Kongsfjord* Somateria mollissima Svalbard |
op_source |
Canadian Journal of Zoology volume 72, issue 6, page 1027-1034 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z94-139 |
container_title |
Canadian Journal of Zoology |
container_volume |
72 |
container_issue |
6 |
container_start_page |
1027 |
op_container_end_page |
1034 |
_version_ |
1785577899077664768 |