Co‐inheritance of sea age at maturity and iteroparity in the Atlantic salmon vgll3 genomic region

Abstract Co‐inheritance in life‐history traits may result in unpredictable evolutionary trajectories if not accounted for in life‐history models. Iteroparity (the reproductive strategy of reproducing more than once) in Atlantic salmon ( Salmo salar ) is a fitness trait with substantial variation wit...

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Published in:Journal of Evolutionary Biology
Main Authors: Aykanat, Tutku, Ozerov, Mikhail, Vähä, Juha‐Pekka, Orell, Panu, Niemelä, Eero, Erkinaro, Jaakko, Primmer, Craig R.
Other Authors: Maj ja Tor Nesslingin Säätiö, Academy of Finland
Format: Article in Journal/Newspaper
Language:English
Published: Oxford University Press (OUP) 2019
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Online Access:http://dx.doi.org/10.1111/jeb.13418
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spelling croxfordunivpr:10.1111/jeb.13418 2024-09-15T17:56:08+00:00 Co‐inheritance of sea age at maturity and iteroparity in the Atlantic salmon vgll3 genomic region Aykanat, Tutku Ozerov, Mikhail Vähä, Juha‐Pekka Orell, Panu Niemelä, Eero Erkinaro, Jaakko Primmer, Craig R. Maj ja Tor Nesslingin Säätiö Academy of Finland 2019 http://dx.doi.org/10.1111/jeb.13418 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjeb.13418 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jeb.13418 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jeb.13418 en eng Oxford University Press (OUP) http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Evolutionary Biology volume 32, issue 4, page 343-355 ISSN 1010-061X 1420-9101 journal-article 2019 croxfordunivpr https://doi.org/10.1111/jeb.13418 2024-08-05T04:31:44Z Abstract Co‐inheritance in life‐history traits may result in unpredictable evolutionary trajectories if not accounted for in life‐history models. Iteroparity (the reproductive strategy of reproducing more than once) in Atlantic salmon ( Salmo salar ) is a fitness trait with substantial variation within and among populations. In the Teno River in northern Europe, iteroparous individuals constitute an important component of many populations and have experienced a sharp increase in abundance in the last 20 years, partly overlapping with a general decrease in age structure. The physiological basis of iteroparity bears similarities to that of age at first maturity, another life‐history trait with substantial fitness effects in salmon. Sea age at maturity in Atlantic salmon is controlled by a major locus around the vgll3 gene, and we used this opportunity demonstrate that these two traits are co‐inherited around this genome region. The odds ratio of survival until second reproduction was up to 2.4 (1.8–3.5 90% CI ) times higher for fish with the early‐maturing vgll3 genotype ( EE ) compared to fish with the late‐maturing genotype ( LL ). The L allele was dominant in individuals remaining only one year at sea before maturation, but the dominance was reversed, with the E allele being dominant in individuals maturing after two or more years at sea. Post hoc analysis indicated that iteroparous fish with the EE genotype had accelerated growth prior to first reproduction compared to first‐time spawners, across all age groups, whereas this effect was not detected in fish with the LL genotype. These results broaden the functional link around the vgll3 genome region and help us understand constraints in the evolution of life‐history variation in salmon. Our results further highlight the need to account for genetic correlations between fitness traits when predicting demographic changes in changing environments. Article in Journal/Newspaper Atlantic salmon Salmo salar Oxford University Press Journal of Evolutionary Biology 32 4 343 355
institution Open Polar
collection Oxford University Press
op_collection_id croxfordunivpr
language English
description Abstract Co‐inheritance in life‐history traits may result in unpredictable evolutionary trajectories if not accounted for in life‐history models. Iteroparity (the reproductive strategy of reproducing more than once) in Atlantic salmon ( Salmo salar ) is a fitness trait with substantial variation within and among populations. In the Teno River in northern Europe, iteroparous individuals constitute an important component of many populations and have experienced a sharp increase in abundance in the last 20 years, partly overlapping with a general decrease in age structure. The physiological basis of iteroparity bears similarities to that of age at first maturity, another life‐history trait with substantial fitness effects in salmon. Sea age at maturity in Atlantic salmon is controlled by a major locus around the vgll3 gene, and we used this opportunity demonstrate that these two traits are co‐inherited around this genome region. The odds ratio of survival until second reproduction was up to 2.4 (1.8–3.5 90% CI ) times higher for fish with the early‐maturing vgll3 genotype ( EE ) compared to fish with the late‐maturing genotype ( LL ). The L allele was dominant in individuals remaining only one year at sea before maturation, but the dominance was reversed, with the E allele being dominant in individuals maturing after two or more years at sea. Post hoc analysis indicated that iteroparous fish with the EE genotype had accelerated growth prior to first reproduction compared to first‐time spawners, across all age groups, whereas this effect was not detected in fish with the LL genotype. These results broaden the functional link around the vgll3 genome region and help us understand constraints in the evolution of life‐history variation in salmon. Our results further highlight the need to account for genetic correlations between fitness traits when predicting demographic changes in changing environments.
author2 Maj ja Tor Nesslingin Säätiö
Academy of Finland
format Article in Journal/Newspaper
author Aykanat, Tutku
Ozerov, Mikhail
Vähä, Juha‐Pekka
Orell, Panu
Niemelä, Eero
Erkinaro, Jaakko
Primmer, Craig R.
spellingShingle Aykanat, Tutku
Ozerov, Mikhail
Vähä, Juha‐Pekka
Orell, Panu
Niemelä, Eero
Erkinaro, Jaakko
Primmer, Craig R.
Co‐inheritance of sea age at maturity and iteroparity in the Atlantic salmon vgll3 genomic region
author_facet Aykanat, Tutku
Ozerov, Mikhail
Vähä, Juha‐Pekka
Orell, Panu
Niemelä, Eero
Erkinaro, Jaakko
Primmer, Craig R.
author_sort Aykanat, Tutku
title Co‐inheritance of sea age at maturity and iteroparity in the Atlantic salmon vgll3 genomic region
title_short Co‐inheritance of sea age at maturity and iteroparity in the Atlantic salmon vgll3 genomic region
title_full Co‐inheritance of sea age at maturity and iteroparity in the Atlantic salmon vgll3 genomic region
title_fullStr Co‐inheritance of sea age at maturity and iteroparity in the Atlantic salmon vgll3 genomic region
title_full_unstemmed Co‐inheritance of sea age at maturity and iteroparity in the Atlantic salmon vgll3 genomic region
title_sort co‐inheritance of sea age at maturity and iteroparity in the atlantic salmon vgll3 genomic region
publisher Oxford University Press (OUP)
publishDate 2019
url http://dx.doi.org/10.1111/jeb.13418
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjeb.13418
https://onlinelibrary.wiley.com/doi/pdf/10.1111/jeb.13418
https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jeb.13418
genre Atlantic salmon
Salmo salar
genre_facet Atlantic salmon
Salmo salar
op_source Journal of Evolutionary Biology
volume 32, issue 4, page 343-355
ISSN 1010-061X 1420-9101
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1111/jeb.13418
container_title Journal of Evolutionary Biology
container_volume 32
container_issue 4
container_start_page 343
op_container_end_page 355
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