Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction
Capital breeders, such as the eider duck Somateria mollissima, accumulate resources before the start of breeding. Eiders preferentially feed on blue mussels Mytilus edulis to build up body condition during winter. We explored how body condition and gizzard mass of wintering eiders relate to mussel q...
Published in: | Journal of Sea Research |
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Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://pure.au.dk/portal/da/publications/allocation-of-body-reserves-during-winter-in-eider-somataeria-mollissimaas-preparation-for-spring-migration-and-reproduction(3e2ebbb0-611c-493c-8914-5c68c08618be).html https://doi.org/10.1016/j.seares.2018.11.005 https://pure.au.dk/ws/files/194205342/1_s2.0_S1385110117302745_main.pdf http://www.scopus.com/inward/record.url?scp=85056855897&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/3e2ebbb0-611c-493c-8914-5c68c08618be 2023-12-17T10:50:01+01:00 Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction Laursen, Karsten Møller, Anders Pape Haugaard, Lars Öst, Markus Vainio, Jouni 2019-02 application/pdf https://pure.au.dk/portal/da/publications/allocation-of-body-reserves-during-winter-in-eider-somataeria-mollissimaas-preparation-for-spring-migration-and-reproduction(3e2ebbb0-611c-493c-8914-5c68c08618be).html https://doi.org/10.1016/j.seares.2018.11.005 https://pure.au.dk/ws/files/194205342/1_s2.0_S1385110117302745_main.pdf http://www.scopus.com/inward/record.url?scp=85056855897&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/da/publications/allocation-of-body-reserves-during-winter-in-eider-somataeria-mollissimaas-preparation-for-spring-migration-and-reproduction(3e2ebbb0-611c-493c-8914-5c68c08618be).html info:eu-repo/semantics/openAccess Laursen , K , Møller , A P , Haugaard , L , Öst , M & Vainio , J 2019 , ' Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction ' , Journal of Sea Research , vol. 144 , no. February , pp. 49-56 . https://doi.org/10.1016/j.seares.2018.11.005 Blue mussel Body condition in winter Gizzard mass Mussel quality Mussel stocks Somateria mollissima Winter climate article 2019 ftuniaarhuspubl https://doi.org/10.1016/j.seares.2018.11.005 2023-11-23T00:00:43Z Capital breeders, such as the eider duck Somateria mollissima, accumulate resources before the start of breeding. Eiders preferentially feed on blue mussels Mytilus edulis to build up body condition during winter. We explored how body condition and gizzard mass of wintering eiders relate to mussel quality and quantity, winter climate and body condition of females at the breeding grounds. Body condition during winter (defined as scaled body mass index) of eiders increased during winter and the magnitude of the effect depended on age and mussel quality. Gizzard mass of eiders increased during winter with effects of mussel quality, mussel stocks and sex. Body condition in winter of adult females increased from the first half of January to the second half of February on average by 1.5%, equal to c. 96 g. During the same period gizzard mass of adult females increased by 12.2%, i.e., a nearly ten-fold increase compared to that observed in body condition in winter. Body condition of females at the breeding grounds in Finland (defined as body condition at hatching) was significantly positively correlated with gizzard mass in winter, but not significantly correlated with body condition in winter. Thus, eiders allocate body reserves to increase gizzard mass but less so to increase body condition in winter. This can be considered an adaptive migratory strategy of these eiders, whereby large winter (pre-migratory) gizzards increase food processing capacity, making it possible for eiders to arrive at the breeding grounds with superior body condition and a high reproductive potential. Article in Journal/Newspaper Somateria mollissima Aarhus University: Research Journal of Sea Research 144 49 56 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Blue mussel Body condition in winter Gizzard mass Mussel quality Mussel stocks Somateria mollissima Winter climate |
spellingShingle |
Blue mussel Body condition in winter Gizzard mass Mussel quality Mussel stocks Somateria mollissima Winter climate Laursen, Karsten Møller, Anders Pape Haugaard, Lars Öst, Markus Vainio, Jouni Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction |
topic_facet |
Blue mussel Body condition in winter Gizzard mass Mussel quality Mussel stocks Somateria mollissima Winter climate |
description |
Capital breeders, such as the eider duck Somateria mollissima, accumulate resources before the start of breeding. Eiders preferentially feed on blue mussels Mytilus edulis to build up body condition during winter. We explored how body condition and gizzard mass of wintering eiders relate to mussel quality and quantity, winter climate and body condition of females at the breeding grounds. Body condition during winter (defined as scaled body mass index) of eiders increased during winter and the magnitude of the effect depended on age and mussel quality. Gizzard mass of eiders increased during winter with effects of mussel quality, mussel stocks and sex. Body condition in winter of adult females increased from the first half of January to the second half of February on average by 1.5%, equal to c. 96 g. During the same period gizzard mass of adult females increased by 12.2%, i.e., a nearly ten-fold increase compared to that observed in body condition in winter. Body condition of females at the breeding grounds in Finland (defined as body condition at hatching) was significantly positively correlated with gizzard mass in winter, but not significantly correlated with body condition in winter. Thus, eiders allocate body reserves to increase gizzard mass but less so to increase body condition in winter. This can be considered an adaptive migratory strategy of these eiders, whereby large winter (pre-migratory) gizzards increase food processing capacity, making it possible for eiders to arrive at the breeding grounds with superior body condition and a high reproductive potential. |
format |
Article in Journal/Newspaper |
author |
Laursen, Karsten Møller, Anders Pape Haugaard, Lars Öst, Markus Vainio, Jouni |
author_facet |
Laursen, Karsten Møller, Anders Pape Haugaard, Lars Öst, Markus Vainio, Jouni |
author_sort |
Laursen, Karsten |
title |
Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction |
title_short |
Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction |
title_full |
Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction |
title_fullStr |
Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction |
title_full_unstemmed |
Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction |
title_sort |
allocation of body reserves during winter in eider somataeria mollissima as preparation for spring migration and reproduction |
publishDate |
2019 |
url |
https://pure.au.dk/portal/da/publications/allocation-of-body-reserves-during-winter-in-eider-somataeria-mollissimaas-preparation-for-spring-migration-and-reproduction(3e2ebbb0-611c-493c-8914-5c68c08618be).html https://doi.org/10.1016/j.seares.2018.11.005 https://pure.au.dk/ws/files/194205342/1_s2.0_S1385110117302745_main.pdf http://www.scopus.com/inward/record.url?scp=85056855897&partnerID=8YFLogxK |
genre |
Somateria mollissima |
genre_facet |
Somateria mollissima |
op_source |
Laursen , K , Møller , A P , Haugaard , L , Öst , M & Vainio , J 2019 , ' Allocation of body reserves during winter in eider Somataeria mollissima as preparation for spring migration and reproduction ' , Journal of Sea Research , vol. 144 , no. February , pp. 49-56 . https://doi.org/10.1016/j.seares.2018.11.005 |
op_relation |
https://pure.au.dk/portal/da/publications/allocation-of-body-reserves-during-winter-in-eider-somataeria-mollissimaas-preparation-for-spring-migration-and-reproduction(3e2ebbb0-611c-493c-8914-5c68c08618be).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.seares.2018.11.005 |
container_title |
Journal of Sea Research |
container_volume |
144 |
container_start_page |
49 |
op_container_end_page |
56 |
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1785574670882308096 |