Variation in primary molt in the least auklet
Along with breeding and migration, molt is one of the most energetically expensive components of a bird's annual cycle. Auklets (tribe Aethiini) are apparently unique among the Alcidae in that flight-feather molt and breeding overlap. We compared the degree of overlap of primary molt with breed...
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ftuhipublicatio:oai:pure.atira.dk:publications/c9c558b9-9e64-41b6-b79a-37095a18c1af 2024-09-15T17:39:16+00:00 Variation in primary molt in the least auklet Bond, Alexander L. Konyukhov, Nikolai B. Jones, Ian L. 2013-06-10 https://pure.uhi.ac.uk/en/publications/c9c558b9-9e64-41b6-b79a-37095a18c1af https://doi.org/10.1525/cond.2013.110062 http://www.scopus.com/inward/record.url?scp=84878523296&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84878523296&partnerID=8YFLogxK eng eng https://pure.uhi.ac.uk/en/publications/c9c558b9-9e64-41b6-b79a-37095a18c1af info:eu-repo/semantics/restrictedAccess Bond , A L , Konyukhov , N B & Jones , I L 2013 , ' Variation in primary molt in the least auklet ' , Condor , vol. 115 , no. 2 , pp. 348-355 . https://doi.org/10.1525/cond.2013.110062 Aethia pusilla Bering sea Least auklet Molt article 2013 ftuhipublicatio https://doi.org/10.1525/cond.2013.110062 2024-07-01T23:38:33Z Along with breeding and migration, molt is one of the most energetically expensive components of a bird's annual cycle. Auklets (tribe Aethiini) are apparently unique among the Alcidae in that flight-feather molt and breeding overlap. We compared the degree of overlap of primary molt with breeding in the Least Auklet (Aethia pusilla) at four colonies in varying oceanographic environments: Kiska Island (Aleutian Islands, Alaska, 52°N), St. George Island (Pribilof Islands, Alaska, 56°N), St. Paul Island (Pribilof Islands, 57°N), and Cape Ulyakhpen (Chukotka Peninsula, Russia, 64°N). We hypothesized that the onset and speed of feather replacement should be related to latitude or sea-ice dynamics. Flight-feather molt commenced during incubation with up to four primaries replaced by the end of chick rearing. At Kiska, we found no difference in molt rate between adult breeders and nonbreeders, but subadults started molt after adults and were more variable in when they started primary molt. At higher latitudes adult auklets replaced their first four primaries faster and initiated molt later although the length of the breeding season was similar. The increased energetic requirements of Least Auklets breeding and molting at higher latitudes are supported by the cold Anadyr Current, which advects lipid-rich oceanic copepods (Neocalanus spp.). In the Least Auklet and other members of the Aethiini, sequential primary molt, rather than the simultaneous molt typical of other alcids, may be possible because of auklets' lower body mass, lower wing loading, mass loss at hatching, and foraging on highly abundant prey. Article in Journal/Newspaper Anadyr Anadyr' Bering Sea Chukotka Chukotka Peninsula Sea ice Alaska Aleutian Islands Copepods University of the Highlands and Islands: Research Database of UHI The Condor 115 2 348 355 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Aethia pusilla Bering sea Least auklet Molt |
spellingShingle |
Aethia pusilla Bering sea Least auklet Molt Bond, Alexander L. Konyukhov, Nikolai B. Jones, Ian L. Variation in primary molt in the least auklet |
topic_facet |
Aethia pusilla Bering sea Least auklet Molt |
description |
Along with breeding and migration, molt is one of the most energetically expensive components of a bird's annual cycle. Auklets (tribe Aethiini) are apparently unique among the Alcidae in that flight-feather molt and breeding overlap. We compared the degree of overlap of primary molt with breeding in the Least Auklet (Aethia pusilla) at four colonies in varying oceanographic environments: Kiska Island (Aleutian Islands, Alaska, 52°N), St. George Island (Pribilof Islands, Alaska, 56°N), St. Paul Island (Pribilof Islands, 57°N), and Cape Ulyakhpen (Chukotka Peninsula, Russia, 64°N). We hypothesized that the onset and speed of feather replacement should be related to latitude or sea-ice dynamics. Flight-feather molt commenced during incubation with up to four primaries replaced by the end of chick rearing. At Kiska, we found no difference in molt rate between adult breeders and nonbreeders, but subadults started molt after adults and were more variable in when they started primary molt. At higher latitudes adult auklets replaced their first four primaries faster and initiated molt later although the length of the breeding season was similar. The increased energetic requirements of Least Auklets breeding and molting at higher latitudes are supported by the cold Anadyr Current, which advects lipid-rich oceanic copepods (Neocalanus spp.). In the Least Auklet and other members of the Aethiini, sequential primary molt, rather than the simultaneous molt typical of other alcids, may be possible because of auklets' lower body mass, lower wing loading, mass loss at hatching, and foraging on highly abundant prey. |
format |
Article in Journal/Newspaper |
author |
Bond, Alexander L. Konyukhov, Nikolai B. Jones, Ian L. |
author_facet |
Bond, Alexander L. Konyukhov, Nikolai B. Jones, Ian L. |
author_sort |
Bond, Alexander L. |
title |
Variation in primary molt in the least auklet |
title_short |
Variation in primary molt in the least auklet |
title_full |
Variation in primary molt in the least auklet |
title_fullStr |
Variation in primary molt in the least auklet |
title_full_unstemmed |
Variation in primary molt in the least auklet |
title_sort |
variation in primary molt in the least auklet |
publishDate |
2013 |
url |
https://pure.uhi.ac.uk/en/publications/c9c558b9-9e64-41b6-b79a-37095a18c1af https://doi.org/10.1525/cond.2013.110062 http://www.scopus.com/inward/record.url?scp=84878523296&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84878523296&partnerID=8YFLogxK |
genre |
Anadyr Anadyr' Bering Sea Chukotka Chukotka Peninsula Sea ice Alaska Aleutian Islands Copepods |
genre_facet |
Anadyr Anadyr' Bering Sea Chukotka Chukotka Peninsula Sea ice Alaska Aleutian Islands Copepods |
op_source |
Bond , A L , Konyukhov , N B & Jones , I L 2013 , ' Variation in primary molt in the least auklet ' , Condor , vol. 115 , no. 2 , pp. 348-355 . https://doi.org/10.1525/cond.2013.110062 |
op_relation |
https://pure.uhi.ac.uk/en/publications/c9c558b9-9e64-41b6-b79a-37095a18c1af |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1525/cond.2013.110062 |
container_title |
The Condor |
container_volume |
115 |
container_issue |
2 |
container_start_page |
348 |
op_container_end_page |
355 |
_version_ |
1810478801713364992 |