Testing mate choice and overdominance at MH in natural families of Atlantic salmon Salmo salar
This study aimed to test mate choice and selection during early life stages on major histocompatibility ( MH ) genotype in natural families of Atlantic salmon Salmo salar spawners and juveniles, using nine microsatellites to reconstruct families, one microsatellite linked to an MH class I gene and o...
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crwiley:10.1111/jfb.13260 2024-09-09T19:30:28+00:00 Testing mate choice and overdominance at MH in natural families of Atlantic salmon Salmo salar Tentelier, C. Barroso‐Gomila, O. Lepais, O. Manicki, A. Romero‐Garmendia, I. Jugo, B. M. UPV/EHU UPPA 2017 http://dx.doi.org/10.1111/jfb.13260 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13260 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13260 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 90, issue 4, page 1644-1659 ISSN 0022-1112 1095-8649 journal-article 2017 crwiley https://doi.org/10.1111/jfb.13260 2024-07-09T04:12:06Z This study aimed to test mate choice and selection during early life stages on major histocompatibility ( MH ) genotype in natural families of Atlantic salmon Salmo salar spawners and juveniles, using nine microsatellites to reconstruct families, one microsatellite linked to an MH class I gene and one minisatellite linked to an MH class II gene. MH ‐based mate choice was only detected for the class I locus on the first year, with lower expected heterozygosity in the offspring of actually mated pairs than predicted under random mating. The genotype frequencies of MH ‐linked loci observed in the juveniles were compared with frequencies expected from Mendelian inheritance of parental alleles to detect selection during early life stages. No selection was detected on the locus linked to class I gene. For the locus linked to class II gene, observed heterozygosity was higher than expected in the first year and lower in the second year, suggesting overdominance and underdominance, respectively. Within family, juveniles' body size was linked to heterozygosity at the same locus, with longer heterozygotes in the first year and longer homozygotes in the second year. Selection therefore seems to differ from one locus to the other and from year to year. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 90 4 1644 1659 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
This study aimed to test mate choice and selection during early life stages on major histocompatibility ( MH ) genotype in natural families of Atlantic salmon Salmo salar spawners and juveniles, using nine microsatellites to reconstruct families, one microsatellite linked to an MH class I gene and one minisatellite linked to an MH class II gene. MH ‐based mate choice was only detected for the class I locus on the first year, with lower expected heterozygosity in the offspring of actually mated pairs than predicted under random mating. The genotype frequencies of MH ‐linked loci observed in the juveniles were compared with frequencies expected from Mendelian inheritance of parental alleles to detect selection during early life stages. No selection was detected on the locus linked to class I gene. For the locus linked to class II gene, observed heterozygosity was higher than expected in the first year and lower in the second year, suggesting overdominance and underdominance, respectively. Within family, juveniles' body size was linked to heterozygosity at the same locus, with longer heterozygotes in the first year and longer homozygotes in the second year. Selection therefore seems to differ from one locus to the other and from year to year. |
author2 |
UPV/EHU UPPA |
format |
Article in Journal/Newspaper |
author |
Tentelier, C. Barroso‐Gomila, O. Lepais, O. Manicki, A. Romero‐Garmendia, I. Jugo, B. M. |
spellingShingle |
Tentelier, C. Barroso‐Gomila, O. Lepais, O. Manicki, A. Romero‐Garmendia, I. Jugo, B. M. Testing mate choice and overdominance at MH in natural families of Atlantic salmon Salmo salar |
author_facet |
Tentelier, C. Barroso‐Gomila, O. Lepais, O. Manicki, A. Romero‐Garmendia, I. Jugo, B. M. |
author_sort |
Tentelier, C. |
title |
Testing mate choice and overdominance at MH in natural families of Atlantic salmon Salmo salar |
title_short |
Testing mate choice and overdominance at MH in natural families of Atlantic salmon Salmo salar |
title_full |
Testing mate choice and overdominance at MH in natural families of Atlantic salmon Salmo salar |
title_fullStr |
Testing mate choice and overdominance at MH in natural families of Atlantic salmon Salmo salar |
title_full_unstemmed |
Testing mate choice and overdominance at MH in natural families of Atlantic salmon Salmo salar |
title_sort |
testing mate choice and overdominance at mh in natural families of atlantic salmon salmo salar |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/jfb.13260 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13260 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13260 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 90, issue 4, page 1644-1659 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfb.13260 |
container_title |
Journal of Fish Biology |
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90 |
container_issue |
4 |
container_start_page |
1644 |
op_container_end_page |
1659 |
_version_ |
1809899454147330048 |