No relationship between microsatellite variation and neonatal fitness in Antarctic fur seals, Arctocephalus gazella
Abstract Published studies of wild vertebrate populations have almost universally reported positive associations between genetic variation measured at microsatellite loci and fitness, creating the impression of ubiquity both in terms of the species and the traits involved. However, there is concern...
Published in: | Molecular Ecology |
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crwiley:10.1111/j.1365-294x.2006.02894.x 2024-06-23T07:47:41+00:00 No relationship between microsatellite variation and neonatal fitness in Antarctic fur seals, Arctocephalus gazella HOFFMAN, J. I. FORCADA, J. AMOS, W. 2006 http://dx.doi.org/10.1111/j.1365-294x.2006.02894.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2006.02894.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2006.02894.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Molecular Ecology volume 15, issue 7, page 1995-2005 ISSN 0962-1083 1365-294X journal-article 2006 crwiley https://doi.org/10.1111/j.1365-294x.2006.02894.x 2024-06-04T06:41:45Z Abstract Published studies of wild vertebrate populations have almost universally reported positive associations between genetic variation measured at microsatellite loci and fitness, creating the impression of ubiquity both in terms of the species and the traits involved. However, there is concern that this picture may be misleading because negative results frequently go unpublished. Here, we analyse the relationship between genotypic variation at nine highly variable microsatellite loci and neonatal fitness in 1070 Antarctic fur seal pups born at Bird Island, South Georgia. Despite our relatively large sample size, we find no significant association between three different measures of heterozygosity and two fitness traits, birth weight and survival. Furthermore, increasing genetic resolution by calculating parental relatedness also yields no association between genetic variation and fitness. Our findings are consistent with necropsy data showing that most pups die from starvation or trauma, conditions that are unlikely to be influenced strongly by genetic factors, particularly if the benefits of high heterozygosity are linked to immune‐related genes. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella Bird Island Wiley Online Library Antarctic Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Molecular Ecology 15 7 1995 2005 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Published studies of wild vertebrate populations have almost universally reported positive associations between genetic variation measured at microsatellite loci and fitness, creating the impression of ubiquity both in terms of the species and the traits involved. However, there is concern that this picture may be misleading because negative results frequently go unpublished. Here, we analyse the relationship between genotypic variation at nine highly variable microsatellite loci and neonatal fitness in 1070 Antarctic fur seal pups born at Bird Island, South Georgia. Despite our relatively large sample size, we find no significant association between three different measures of heterozygosity and two fitness traits, birth weight and survival. Furthermore, increasing genetic resolution by calculating parental relatedness also yields no association between genetic variation and fitness. Our findings are consistent with necropsy data showing that most pups die from starvation or trauma, conditions that are unlikely to be influenced strongly by genetic factors, particularly if the benefits of high heterozygosity are linked to immune‐related genes. |
format |
Article in Journal/Newspaper |
author |
HOFFMAN, J. I. FORCADA, J. AMOS, W. |
spellingShingle |
HOFFMAN, J. I. FORCADA, J. AMOS, W. No relationship between microsatellite variation and neonatal fitness in Antarctic fur seals, Arctocephalus gazella |
author_facet |
HOFFMAN, J. I. FORCADA, J. AMOS, W. |
author_sort |
HOFFMAN, J. I. |
title |
No relationship between microsatellite variation and neonatal fitness in Antarctic fur seals, Arctocephalus gazella |
title_short |
No relationship between microsatellite variation and neonatal fitness in Antarctic fur seals, Arctocephalus gazella |
title_full |
No relationship between microsatellite variation and neonatal fitness in Antarctic fur seals, Arctocephalus gazella |
title_fullStr |
No relationship between microsatellite variation and neonatal fitness in Antarctic fur seals, Arctocephalus gazella |
title_full_unstemmed |
No relationship between microsatellite variation and neonatal fitness in Antarctic fur seals, Arctocephalus gazella |
title_sort |
no relationship between microsatellite variation and neonatal fitness in antarctic fur seals, arctocephalus gazella |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1365-294x.2006.02894.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2006.02894.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2006.02894.x |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Antarctic Bird Island |
geographic_facet |
Antarctic Bird Island |
genre |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella Bird Island |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella Bird Island |
op_source |
Molecular Ecology volume 15, issue 7, page 1995-2005 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-294x.2006.02894.x |
container_title |
Molecular Ecology |
container_volume |
15 |
container_issue |
7 |
container_start_page |
1995 |
op_container_end_page |
2005 |
_version_ |
1802651823294644224 |