Variation in structural size and wing stripe of Lesser and Greater scaup
Heads, wings, and feet of Lesser Scaup (Aythya affinis) and Greater Scaup (Aythya marila) were obtained from 365 birds killed by hunters to investigate differences in structural size and in the intensity and extent of the white wing stripe. Twelve morphological measurements were taken on each bird a...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1988
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Online Access: | http://dx.doi.org/10.1139/z88-300 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-300 |
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crcansciencepubl:10.1139/z88-300 2023-12-17T10:27:32+01:00 Variation in structural size and wing stripe of Lesser and Greater scaup Wilson, Steven F. Ankney, C. Davison 1988 http://dx.doi.org/10.1139/z88-300 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-300 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 66, issue 9, page 2045-2048 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1988 crcansciencepubl https://doi.org/10.1139/z88-300 2023-11-19T13:38:20Z Heads, wings, and feet of Lesser Scaup (Aythya affinis) and Greater Scaup (Aythya marila) were obtained from 365 birds killed by hunters to investigate differences in structural size and in the intensity and extent of the white wing stripe. Twelve morphological measurements were taken on each bird and wing stripes were quantitatively scored using soil colour charts. Principal component analysis of the structural data separated the birds into two nonoverlapping size groups. We considered the group of large birds and the group of small birds to be Greater and Lesser scaup, respectively. Variation in the wing stripe character was extensive; 9% of the birds in our sample could not be correctly classified as Lesser or Greater scaup on the basis of wing stripe alone. However, most of the variation was due to sexual differences, i.e., female Greater Scaup with unusually dark wings and male Lesser Scaup with unusually white wings. Article in Journal/Newspaper Aythya marila greater scaup Canadian Science Publishing (via Crossref) Stripe ENVELOPE(9.914,9.914,63.019,63.019) Canadian Journal of Zoology 66 9 2045 2048 |
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 Wilson, Steven F. Ankney, C. Davison Variation in structural size and wing stripe of Lesser and Greater scaup |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Heads, wings, and feet of Lesser Scaup (Aythya affinis) and Greater Scaup (Aythya marila) were obtained from 365 birds killed by hunters to investigate differences in structural size and in the intensity and extent of the white wing stripe. Twelve morphological measurements were taken on each bird and wing stripes were quantitatively scored using soil colour charts. Principal component analysis of the structural data separated the birds into two nonoverlapping size groups. We considered the group of large birds and the group of small birds to be Greater and Lesser scaup, respectively. Variation in the wing stripe character was extensive; 9% of the birds in our sample could not be correctly classified as Lesser or Greater scaup on the basis of wing stripe alone. However, most of the variation was due to sexual differences, i.e., female Greater Scaup with unusually dark wings and male Lesser Scaup with unusually white wings. |
format |
Article in Journal/Newspaper |
author |
Wilson, Steven F. Ankney, C. Davison |
author_facet |
Wilson, Steven F. Ankney, C. Davison |
author_sort |
Wilson, Steven F. |
title |
Variation in structural size and wing stripe of Lesser and Greater scaup |
title_short |
Variation in structural size and wing stripe of Lesser and Greater scaup |
title_full |
Variation in structural size and wing stripe of Lesser and Greater scaup |
title_fullStr |
Variation in structural size and wing stripe of Lesser and Greater scaup |
title_full_unstemmed |
Variation in structural size and wing stripe of Lesser and Greater scaup |
title_sort |
variation in structural size and wing stripe of lesser and greater scaup |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/z88-300 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-300 |
long_lat |
ENVELOPE(9.914,9.914,63.019,63.019) |
geographic |
Stripe |
geographic_facet |
Stripe |
genre |
Aythya marila greater scaup |
genre_facet |
Aythya marila greater scaup |
op_source |
Canadian Journal of Zoology volume 66, issue 9, page 2045-2048 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z88-300 |
container_title |
Canadian Journal of Zoology |
container_volume |
66 |
container_issue |
9 |
container_start_page |
2045 |
op_container_end_page |
2048 |
_version_ |
1785579418281836544 |