The benefit of large broods in barnacle geese:A study using natural and experimental manipulations
1. In precocial birds, where the young feed themselves, the costs and benefits of brood size are still poorly understood. An experimental manipulation of brood size was employed to examine the effects of brood size on both parents and young in a wild population of barnacle geese [Branta leucopsis (B...
Published in: | Journal of Animal Ecology |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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1999
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Online Access: | https://hdl.handle.net/11370/060df2c9-585d-4e82-9bfc-513347d77901 https://research.rug.nl/en/publications/060df2c9-585d-4e82-9bfc-513347d77901 https://doi.org/10.1046/j.1365-2656.1999.00325.x |
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ftunigroningenpu:oai:pure.rug.nl:publications/060df2c9-585d-4e82-9bfc-513347d77901 2024-06-02T08:04:35+00:00 The benefit of large broods in barnacle geese:A study using natural and experimental manipulations Loonen, M.J.J.E. Bruinzeel, Leo W. Black, J.M. Drent, R.H. 1999-07 https://hdl.handle.net/11370/060df2c9-585d-4e82-9bfc-513347d77901 https://research.rug.nl/en/publications/060df2c9-585d-4e82-9bfc-513347d77901 https://doi.org/10.1046/j.1365-2656.1999.00325.x eng eng https://research.rug.nl/en/publications/060df2c9-585d-4e82-9bfc-513347d77901 info:eu-repo/semantics/closedAccess Loonen , M J J E , Bruinzeel , L W , Black , J M & Drent , R H 1999 , ' The benefit of large broods in barnacle geese : A study using natural and experimental manipulations ' , Journal of Animal Ecology , vol. 68 , no. 4 , pp. 753-768 . https://doi.org/10.1046/j.1365-2656.1999.00325.x adoption Branta leucopsis brood size manipulation fitness social dominance LESSER SNOW GEESE CLUTCH-SIZE BRANTA-LEUCOPSIS AGONISTIC BEHAVIOR PARENTAL BEHAVIOR CANADA GEESE BLACK BRANT BODY-SIZE GOOSE SURVIVAL article 1999 ftunigroningenpu https://doi.org/10.1046/j.1365-2656.1999.00325.x 2024-05-07T18:10:21Z 1. In precocial birds, where the young feed themselves, the costs and benefits of brood size are still poorly understood. An experimental manipulation of brood size was employed to examine the effects of brood size on both parents and young in a wild population of barnacle geese [Branta leucopsis (Bechstein)] during brood-rearing on Svalbard. 2. Social dominance of the family unit, the amount of vigilance behaviour of the parents, the growth of the goslings in the family unit and an index of body condition for female parents during moult were all positively correlated with brood size. 3. When brood size changed as a result of natural events (i.e. predation or adoption) or experimental manipulation, rates of dominance, parental vigilance, gosling growth and female parent condition changed in a similar direction to the observed relation between the variable and brood size in unchanged broods. 4. After fledging, the fast-growing goslings in large broods survived better during autumn migration, while there was no apparent net cost in survival or next-year breeding for the parents. 5. Via a direct effect of brood size on dominance of the family unit, large broods were beneficial for both parent and young in a situation where there was strong intraspecific competition for the available food resources. 6. This study provides a clear demonstration of a causal relationship between brood size and various components of both gosling and adult fitness and is of direct relevance to the phenomenon of adoption and the evolution of brood size in this species. Article in Journal/Newspaper Branta leucopsis Svalbard University of Groningen research database Brant ENVELOPE(7.105,7.105,62.917,62.917) Canada Svalbard Journal of Animal Ecology 68 4 753 768 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
adoption Branta leucopsis brood size manipulation fitness social dominance LESSER SNOW GEESE CLUTCH-SIZE BRANTA-LEUCOPSIS AGONISTIC BEHAVIOR PARENTAL BEHAVIOR CANADA GEESE BLACK BRANT BODY-SIZE GOOSE SURVIVAL |
spellingShingle |
adoption Branta leucopsis brood size manipulation fitness social dominance LESSER SNOW GEESE CLUTCH-SIZE BRANTA-LEUCOPSIS AGONISTIC BEHAVIOR PARENTAL BEHAVIOR CANADA GEESE BLACK BRANT BODY-SIZE GOOSE SURVIVAL Loonen, M.J.J.E. Bruinzeel, Leo W. Black, J.M. Drent, R.H. The benefit of large broods in barnacle geese:A study using natural and experimental manipulations |
topic_facet |
adoption Branta leucopsis brood size manipulation fitness social dominance LESSER SNOW GEESE CLUTCH-SIZE BRANTA-LEUCOPSIS AGONISTIC BEHAVIOR PARENTAL BEHAVIOR CANADA GEESE BLACK BRANT BODY-SIZE GOOSE SURVIVAL |
description |
1. In precocial birds, where the young feed themselves, the costs and benefits of brood size are still poorly understood. An experimental manipulation of brood size was employed to examine the effects of brood size on both parents and young in a wild population of barnacle geese [Branta leucopsis (Bechstein)] during brood-rearing on Svalbard. 2. Social dominance of the family unit, the amount of vigilance behaviour of the parents, the growth of the goslings in the family unit and an index of body condition for female parents during moult were all positively correlated with brood size. 3. When brood size changed as a result of natural events (i.e. predation or adoption) or experimental manipulation, rates of dominance, parental vigilance, gosling growth and female parent condition changed in a similar direction to the observed relation between the variable and brood size in unchanged broods. 4. After fledging, the fast-growing goslings in large broods survived better during autumn migration, while there was no apparent net cost in survival or next-year breeding for the parents. 5. Via a direct effect of brood size on dominance of the family unit, large broods were beneficial for both parent and young in a situation where there was strong intraspecific competition for the available food resources. 6. This study provides a clear demonstration of a causal relationship between brood size and various components of both gosling and adult fitness and is of direct relevance to the phenomenon of adoption and the evolution of brood size in this species. |
format |
Article in Journal/Newspaper |
author |
Loonen, M.J.J.E. Bruinzeel, Leo W. Black, J.M. Drent, R.H. |
author_facet |
Loonen, M.J.J.E. Bruinzeel, Leo W. Black, J.M. Drent, R.H. |
author_sort |
Loonen, M.J.J.E. |
title |
The benefit of large broods in barnacle geese:A study using natural and experimental manipulations |
title_short |
The benefit of large broods in barnacle geese:A study using natural and experimental manipulations |
title_full |
The benefit of large broods in barnacle geese:A study using natural and experimental manipulations |
title_fullStr |
The benefit of large broods in barnacle geese:A study using natural and experimental manipulations |
title_full_unstemmed |
The benefit of large broods in barnacle geese:A study using natural and experimental manipulations |
title_sort |
benefit of large broods in barnacle geese:a study using natural and experimental manipulations |
publishDate |
1999 |
url |
https://hdl.handle.net/11370/060df2c9-585d-4e82-9bfc-513347d77901 https://research.rug.nl/en/publications/060df2c9-585d-4e82-9bfc-513347d77901 https://doi.org/10.1046/j.1365-2656.1999.00325.x |
long_lat |
ENVELOPE(7.105,7.105,62.917,62.917) |
geographic |
Brant Canada Svalbard |
geographic_facet |
Brant Canada Svalbard |
genre |
Branta leucopsis Svalbard |
genre_facet |
Branta leucopsis Svalbard |
op_source |
Loonen , M J J E , Bruinzeel , L W , Black , J M & Drent , R H 1999 , ' The benefit of large broods in barnacle geese : A study using natural and experimental manipulations ' , Journal of Animal Ecology , vol. 68 , no. 4 , pp. 753-768 . https://doi.org/10.1046/j.1365-2656.1999.00325.x |
op_relation |
https://research.rug.nl/en/publications/060df2c9-585d-4e82-9bfc-513347d77901 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1046/j.1365-2656.1999.00325.x |
container_title |
Journal of Animal Ecology |
container_volume |
68 |
container_issue |
4 |
container_start_page |
753 |
op_container_end_page |
768 |
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1800749232581246976 |