The influence of age on reproductive performance in the Brown Thornbill
I examined age effects on reproduction in the Brown Thornbill Acanthiza pusilla in Canberra, Australia. I found that the reproductive performance of both males and females improved with age, although only age-related improvement in male performance had a significant effect on annual reproductive suc...
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Blackwell Munksgaard
2001
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:60341 2023-05-15T18:03:44+02:00 The influence of age on reproductive performance in the Brown Thornbill Green, David J. T. Alerstam 2001-03-01 https://espace.library.uq.edu.au/view/UQ:60341 eng eng Blackwell Munksgaard doi:10.1034/j.1600-048X.2001.320102.x issn:0908-8857 issn:1600-048X Ornithology Shearwaters Puffinus-tenuirostris Breeding Performance European Blackbirds Mate Retention Pair-bond Success Experience Birds Hypotheses Predation 270706 Life Histories (incl. Population Ecology) C1 780105 Biological sciences Journal Article 2001 ftunivqespace https://doi.org/10.1034/j.1600-048X.2001.320102.x 2020-08-04T01:06:37Z I examined age effects on reproduction in the Brown Thornbill Acanthiza pusilla in Canberra, Australia. I found that the reproductive performance of both males and females improved with age, although only age-related improvement in male performance had a significant effect on annual reproductive success. Reproductive success improved with male age as a result of improved performance during two stages of the breeding cycle: first-year males were less likely to fledge young than those aged two or more, while both first and second-year males were less successful at raising fledglings to independence than males of three or more. Male performance appears to improve over three years as they gain experience at provisioning nestlings and caring for fledglings without attracting predators, rather than as a direct result of improved foraging skills. In contrast, reproductive success only improved slightly with female age, although females of two or more years initiated their first clutch earlier in the season than one-year-old females, and tended to be mure likely to re-nest if a breeding attempt failed. The poor performance of young females appears unlikely to be related to their foraging ability but may be associated with costs imposed by dispersing to a breeding vacancy earlier in the year. Although the reproductive performance of Brown Thornbills improves considerably with age 1 found no evidence that performance improved as a result of repeated breeding attempts with the same partner. Article in Journal/Newspaper Puffinus tenuirostris The University of Queensland: UQ eSpace Journal of Avian Biology 32 1 6 14 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Ornithology Shearwaters Puffinus-tenuirostris Breeding Performance European Blackbirds Mate Retention Pair-bond Success Experience Birds Hypotheses Predation 270706 Life Histories (incl. Population Ecology) C1 780105 Biological sciences |
spellingShingle |
Ornithology Shearwaters Puffinus-tenuirostris Breeding Performance European Blackbirds Mate Retention Pair-bond Success Experience Birds Hypotheses Predation 270706 Life Histories (incl. Population Ecology) C1 780105 Biological sciences Green, David J. The influence of age on reproductive performance in the Brown Thornbill |
topic_facet |
Ornithology Shearwaters Puffinus-tenuirostris Breeding Performance European Blackbirds Mate Retention Pair-bond Success Experience Birds Hypotheses Predation 270706 Life Histories (incl. Population Ecology) C1 780105 Biological sciences |
description |
I examined age effects on reproduction in the Brown Thornbill Acanthiza pusilla in Canberra, Australia. I found that the reproductive performance of both males and females improved with age, although only age-related improvement in male performance had a significant effect on annual reproductive success. Reproductive success improved with male age as a result of improved performance during two stages of the breeding cycle: first-year males were less likely to fledge young than those aged two or more, while both first and second-year males were less successful at raising fledglings to independence than males of three or more. Male performance appears to improve over three years as they gain experience at provisioning nestlings and caring for fledglings without attracting predators, rather than as a direct result of improved foraging skills. In contrast, reproductive success only improved slightly with female age, although females of two or more years initiated their first clutch earlier in the season than one-year-old females, and tended to be mure likely to re-nest if a breeding attempt failed. The poor performance of young females appears unlikely to be related to their foraging ability but may be associated with costs imposed by dispersing to a breeding vacancy earlier in the year. Although the reproductive performance of Brown Thornbills improves considerably with age 1 found no evidence that performance improved as a result of repeated breeding attempts with the same partner. |
author2 |
T. Alerstam |
format |
Article in Journal/Newspaper |
author |
Green, David J. |
author_facet |
Green, David J. |
author_sort |
Green, David J. |
title |
The influence of age on reproductive performance in the Brown Thornbill |
title_short |
The influence of age on reproductive performance in the Brown Thornbill |
title_full |
The influence of age on reproductive performance in the Brown Thornbill |
title_fullStr |
The influence of age on reproductive performance in the Brown Thornbill |
title_full_unstemmed |
The influence of age on reproductive performance in the Brown Thornbill |
title_sort |
influence of age on reproductive performance in the brown thornbill |
publisher |
Blackwell Munksgaard |
publishDate |
2001 |
url |
https://espace.library.uq.edu.au/view/UQ:60341 |
genre |
Puffinus tenuirostris |
genre_facet |
Puffinus tenuirostris |
op_relation |
doi:10.1034/j.1600-048X.2001.320102.x issn:0908-8857 issn:1600-048X |
op_doi |
https://doi.org/10.1034/j.1600-048X.2001.320102.x |
container_title |
Journal of Avian Biology |
container_volume |
32 |
container_issue |
1 |
container_start_page |
6 |
op_container_end_page |
14 |
_version_ |
1766174740344471552 |