Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella.

Recent genetic studies of natural populations have shown that heterozygosity and other genetic estimates of parental relatedness correlate with a wide variety of fitness traits, from juvenile survival and parasite resistance to male reproductive success. Many of these traits involve health and survi...

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Main Authors: Hoffman, JI, Boyd, Ian Lamont, Amos, W
Format: Article in Journal/Newspaper
Language:English
Published: 2004
Subjects:
Online Access:https://risweb.st-andrews.ac.uk/portal/en/researchoutput/exploring-the-relationship-between-parental-relatedness-and-male-reproductive-success-in-the-antarctic-fur-seal-arctocephalus-gazella(61495a1c-6765-4705-80f8-beaf6e8b4e2e).html
http://www.scopus.com/inward/record.url?scp=5344273977&partnerID=8YFLogxK
id ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/61495a1c-6765-4705-80f8-beaf6e8b4e2e
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spelling ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/61495a1c-6765-4705-80f8-beaf6e8b4e2e 2023-05-15T13:47:48+02:00 Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella. Hoffman, JI Boyd, Ian Lamont Amos, W 2004-09 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/exploring-the-relationship-between-parental-relatedness-and-male-reproductive-success-in-the-antarctic-fur-seal-arctocephalus-gazella(61495a1c-6765-4705-80f8-beaf6e8b4e2e).html http://www.scopus.com/inward/record.url?scp=5344273977&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Hoffman , JI , Boyd , I L & Amos , W 2004 , ' Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella. ' , Evolution , vol. 58 , pp. 2087-2099 . breeding behavior fitness pinniped male-male competition microsatellite heterozygosity inbreeding single-locus effect INBREEDING DEPRESSION RED DEER PRIOR RESIDENCE MIGRATORY BIRD DROSOPHILA-MELANOGASTER NATURAL-POPULATIONS PATERNITY INFERENCE MICROSATELLITE LOCI HALICHOERUS-GRYPUS GENETIC-VARIATION article 2004 ftunstandrewcris 2021-12-26T14:12:59Z Recent genetic studies of natural populations have shown that heterozygosity and other genetic estimates of parental relatedness correlate with a wide variety of fitness traits, from juvenile survival and parasite resistance to male reproductive success. Many of these traits involve health and survival, where the underlying mechanism may involve changes in the effectiveness of the immune system. However, for traits such as reproductive success, the likely mechanisms remain less obvious. In this paper, we examine the relationship between heterozygosity and a range of traits that contribute to male reproductive success, including time spent on territories and competitiveness. Our analysis is based on observational and genetic data from eight consecutive breeding seasons at a colony of the Antarctic fur seal. Arctocephalus gazella. Overall, male reproductive Success was found to correlate strongly with internal relatedness (IR, a form of heterozygosity). When different components of success were analyzed, we found that IR correlates independently with reproductive longevity, time spent ashore, and competitive ability per unit mating opportunity on the Study beach, with more heterozygous males being more successful. Behavioral observations were sufficiently detailed to allow examination of how daily mean IR values for males present on the beach varied within seasons and from year to year. Again, significant variation was found both among and within seasons, with more homozygous males appearing less able to hold territories in poor seasons when pup production is low and, within a season. at both the start of the season and to some extent around the peak of female estrus. Finally, we tested whether the benefits of high heterozygosity are due mainly to a genomewide effect (e.g. inbreeding depression) or to single locus heterosis by asking whether the relationship between IR and male success was robust to the removal of any single locus or to any pair of loci. Since the relationship remained significant in all cases, we ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella University of St Andrews: Research Portal Antarctic The Antarctic
institution Open Polar
collection University of St Andrews: Research Portal
op_collection_id ftunstandrewcris
language English
topic breeding behavior
fitness
pinniped
male-male competition
microsatellite
heterozygosity
inbreeding
single-locus effect
INBREEDING DEPRESSION
RED DEER
PRIOR RESIDENCE
MIGRATORY BIRD
DROSOPHILA-MELANOGASTER
NATURAL-POPULATIONS
PATERNITY INFERENCE
MICROSATELLITE LOCI
HALICHOERUS-GRYPUS
GENETIC-VARIATION
spellingShingle breeding behavior
fitness
pinniped
male-male competition
microsatellite
heterozygosity
inbreeding
single-locus effect
INBREEDING DEPRESSION
RED DEER
PRIOR RESIDENCE
MIGRATORY BIRD
DROSOPHILA-MELANOGASTER
NATURAL-POPULATIONS
PATERNITY INFERENCE
MICROSATELLITE LOCI
HALICHOERUS-GRYPUS
GENETIC-VARIATION
Hoffman, JI
Boyd, Ian Lamont
Amos, W
Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella.
topic_facet breeding behavior
fitness
pinniped
male-male competition
microsatellite
heterozygosity
inbreeding
single-locus effect
INBREEDING DEPRESSION
RED DEER
PRIOR RESIDENCE
MIGRATORY BIRD
DROSOPHILA-MELANOGASTER
NATURAL-POPULATIONS
PATERNITY INFERENCE
MICROSATELLITE LOCI
HALICHOERUS-GRYPUS
GENETIC-VARIATION
description Recent genetic studies of natural populations have shown that heterozygosity and other genetic estimates of parental relatedness correlate with a wide variety of fitness traits, from juvenile survival and parasite resistance to male reproductive success. Many of these traits involve health and survival, where the underlying mechanism may involve changes in the effectiveness of the immune system. However, for traits such as reproductive success, the likely mechanisms remain less obvious. In this paper, we examine the relationship between heterozygosity and a range of traits that contribute to male reproductive success, including time spent on territories and competitiveness. Our analysis is based on observational and genetic data from eight consecutive breeding seasons at a colony of the Antarctic fur seal. Arctocephalus gazella. Overall, male reproductive Success was found to correlate strongly with internal relatedness (IR, a form of heterozygosity). When different components of success were analyzed, we found that IR correlates independently with reproductive longevity, time spent ashore, and competitive ability per unit mating opportunity on the Study beach, with more heterozygous males being more successful. Behavioral observations were sufficiently detailed to allow examination of how daily mean IR values for males present on the beach varied within seasons and from year to year. Again, significant variation was found both among and within seasons, with more homozygous males appearing less able to hold territories in poor seasons when pup production is low and, within a season. at both the start of the season and to some extent around the peak of female estrus. Finally, we tested whether the benefits of high heterozygosity are due mainly to a genomewide effect (e.g. inbreeding depression) or to single locus heterosis by asking whether the relationship between IR and male success was robust to the removal of any single locus or to any pair of loci. Since the relationship remained significant in all cases, we ...
format Article in Journal/Newspaper
author Hoffman, JI
Boyd, Ian Lamont
Amos, W
author_facet Hoffman, JI
Boyd, Ian Lamont
Amos, W
author_sort Hoffman, JI
title Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella.
title_short Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella.
title_full Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella.
title_fullStr Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella.
title_full_unstemmed Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella.
title_sort exploring the relationship between parental relatedness and male reproductive success in the antarctic fur seal arctocephalus gazella.
publishDate 2004
url https://risweb.st-andrews.ac.uk/portal/en/researchoutput/exploring-the-relationship-between-parental-relatedness-and-male-reproductive-success-in-the-antarctic-fur-seal-arctocephalus-gazella(61495a1c-6765-4705-80f8-beaf6e8b4e2e).html
http://www.scopus.com/inward/record.url?scp=5344273977&partnerID=8YFLogxK
geographic Antarctic
The Antarctic
geographic_facet Antarctic
The Antarctic
genre Antarc*
Antarctic
Antarctic Fur Seal
Arctocephalus gazella
genre_facet Antarc*
Antarctic
Antarctic Fur Seal
Arctocephalus gazella
op_source Hoffman , JI , Boyd , I L & Amos , W 2004 , ' Exploring the relationship between parental relatedness and male reproductive success in the Antarctic fur seal Arctocephalus gazella. ' , Evolution , vol. 58 , pp. 2087-2099 .
op_rights info:eu-repo/semantics/restrictedAccess
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