Phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata ) and White-winged Scoters ( Melanitta fusca ) on the Pacific coast of North America
By quantifying phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata (L., 1758)) and White-winged Scoters ( Melanitta fusca (L., 1758)), we tested whether timing of moult is dictated by temporal optima or constraints. Scoters (n = 3481) were captured during moult in Alas...
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2012
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crcansciencepubl:10.1139/z2012-061 2023-12-17T10:33:20+01:00 Phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata ) and White-winged Scoters ( Melanitta fusca ) on the Pacific coast of North America Dickson, R.D. Esler, D. Hupp, J.W. Anderson, E.M. Evenson, J.R. Barrett, J. 2012 http://dx.doi.org/10.1139/z2012-061 http://www.nrcresearchpress.com/doi/full-xml/10.1139/z2012-061 http://www.nrcresearchpress.com/doi/pdf/10.1139/z2012-061 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 90, issue 8, page 932-944 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2012 crcansciencepubl https://doi.org/10.1139/z2012-061 2023-11-19T13:39:25Z By quantifying phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata (L., 1758)) and White-winged Scoters ( Melanitta fusca (L., 1758)), we tested whether timing of moult is dictated by temporal optima or constraints. Scoters (n = 3481) were captured during moult in Alaska, British Columbia, and Washington, and remigial emergence dates were determined. We provide evidence for a pre-emergence interval of 7.3 days that occurs after old primaries are shed and before new ones become visible. All age and sex classes of both scoter species exhibited a wide range of emergence dates (Surf Scoters: 26 June to 22 September; White-winged Scoters: 6 July to 21 September) suggestive of a lack of strong temporal optima for remigial moult. For both species, timing of moult was influenced by site, year, age, and sex. Relative to other waterfowl species, scoters have typical remigial growth rates (Surf Scoters: 3.9 mm·day –1 White-winged Scoters: 4.3 mm·day –1 ) but a long flightless period (34–49 days), in part because their relatively high wing-loading requires a greater proportion of feather regrowth to regain flight. Our data suggest that moulting scoters are not under strong selective pressure to complete moult quickly. Article in Journal/Newspaper Melanitta fusca Alaska Canadian Science Publishing (via Crossref) Pacific Canadian Journal of Zoology 90 8 932 944 |
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 Dickson, R.D. Esler, D. Hupp, J.W. Anderson, E.M. Evenson, J.R. Barrett, J. Phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata ) and White-winged Scoters ( Melanitta fusca ) on the Pacific coast of North America |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
By quantifying phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata (L., 1758)) and White-winged Scoters ( Melanitta fusca (L., 1758)), we tested whether timing of moult is dictated by temporal optima or constraints. Scoters (n = 3481) were captured during moult in Alaska, British Columbia, and Washington, and remigial emergence dates were determined. We provide evidence for a pre-emergence interval of 7.3 days that occurs after old primaries are shed and before new ones become visible. All age and sex classes of both scoter species exhibited a wide range of emergence dates (Surf Scoters: 26 June to 22 September; White-winged Scoters: 6 July to 21 September) suggestive of a lack of strong temporal optima for remigial moult. For both species, timing of moult was influenced by site, year, age, and sex. Relative to other waterfowl species, scoters have typical remigial growth rates (Surf Scoters: 3.9 mm·day –1 White-winged Scoters: 4.3 mm·day –1 ) but a long flightless period (34–49 days), in part because their relatively high wing-loading requires a greater proportion of feather regrowth to regain flight. Our data suggest that moulting scoters are not under strong selective pressure to complete moult quickly. |
format |
Article in Journal/Newspaper |
author |
Dickson, R.D. Esler, D. Hupp, J.W. Anderson, E.M. Evenson, J.R. Barrett, J. |
author_facet |
Dickson, R.D. Esler, D. Hupp, J.W. Anderson, E.M. Evenson, J.R. Barrett, J. |
author_sort |
Dickson, R.D. |
title |
Phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata ) and White-winged Scoters ( Melanitta fusca ) on the Pacific coast of North America |
title_short |
Phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata ) and White-winged Scoters ( Melanitta fusca ) on the Pacific coast of North America |
title_full |
Phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata ) and White-winged Scoters ( Melanitta fusca ) on the Pacific coast of North America |
title_fullStr |
Phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata ) and White-winged Scoters ( Melanitta fusca ) on the Pacific coast of North America |
title_full_unstemmed |
Phenology and duration of remigial moult in Surf Scoters ( Melanitta perspicillata ) and White-winged Scoters ( Melanitta fusca ) on the Pacific coast of North America |
title_sort |
phenology and duration of remigial moult in surf scoters ( melanitta perspicillata ) and white-winged scoters ( melanitta fusca ) on the pacific coast of north america |
publisher |
Canadian Science Publishing |
publishDate |
2012 |
url |
http://dx.doi.org/10.1139/z2012-061 http://www.nrcresearchpress.com/doi/full-xml/10.1139/z2012-061 http://www.nrcresearchpress.com/doi/pdf/10.1139/z2012-061 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Melanitta fusca Alaska |
genre_facet |
Melanitta fusca Alaska |
op_source |
Canadian Journal of Zoology volume 90, issue 8, page 932-944 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z2012-061 |
container_title |
Canadian Journal of Zoology |
container_volume |
90 |
container_issue |
8 |
container_start_page |
932 |
op_container_end_page |
944 |
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1785587299547873280 |