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Transgenerational effects on body size and survival in Brook charr (Salvelinus fontinalis)
Higher temperatures are now observed in several ecosystems and act as new selective agents that shape traits and fitness of individuals. Transgenerational effects may be important in modulating adaptation of future generations and buffering negative impacts of temperature changes. The potential for...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10197224/ https://www.ncbi.nlm.nih.gov/pubmed/37216032 http://dx.doi.org/10.1111/eva.13553 |
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author | Houle, Carolyne Gossieaux, Philippine Bernatchez, Louis Audet, Céline Garant, Dany |
author_facet | Houle, Carolyne Gossieaux, Philippine Bernatchez, Louis Audet, Céline Garant, Dany |
author_sort | Houle, Carolyne |
collection | PubMed |
description | Higher temperatures are now observed in several ecosystems and act as new selective agents that shape traits and fitness of individuals. Transgenerational effects may be important in modulating adaptation of future generations and buffering negative impacts of temperature changes. The potential for these effects may be important in freshwater fish species, as temperature is a key abiotic component of their environment. Yet, still, relatively few studies have assessed the presence and importance of transgenerational effects under natural conditions. The purpose of this study was to test how parental thermal conditions influenced offspring growth and survival following stocking in Brook charr (Salvelinus fontinalis). To do so, part of the breeders were exposed to a “cold” treatment while others were exposed to a “warm” treatment during the final steps of gonad maturation (constant 2°C difference between treatments along the seasonal temperature decrease). The impact on offspring of a selection treatment targeting production traits of interest (absence of sexual maturation at 1+, combined with increased growth) in breeders was also evaluated. After 7–8 months of growth in captivity, offspring were stocked in natural lakes. Their growth and survival were assessed about a year later. Offspring from “cold” breeders showed lower survival than those from “warm” breeders and the selection treatment had no effect on survival. However, the selection treatment was linked to lower Fulton's condition index, which, in turn, was positively correlated to survival in lakes. This study highlights the importance of working in ecological/industrial context to fully assess the different impacts of transgenerational effects on traits and survival. Our results also have important implications for stocking practices used to support the sport fishing industry. |
format | Online Article Text |
id | pubmed-10197224 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-101972242023-05-20 Transgenerational effects on body size and survival in Brook charr (Salvelinus fontinalis) Houle, Carolyne Gossieaux, Philippine Bernatchez, Louis Audet, Céline Garant, Dany Evol Appl Original Articles Higher temperatures are now observed in several ecosystems and act as new selective agents that shape traits and fitness of individuals. Transgenerational effects may be important in modulating adaptation of future generations and buffering negative impacts of temperature changes. The potential for these effects may be important in freshwater fish species, as temperature is a key abiotic component of their environment. Yet, still, relatively few studies have assessed the presence and importance of transgenerational effects under natural conditions. The purpose of this study was to test how parental thermal conditions influenced offspring growth and survival following stocking in Brook charr (Salvelinus fontinalis). To do so, part of the breeders were exposed to a “cold” treatment while others were exposed to a “warm” treatment during the final steps of gonad maturation (constant 2°C difference between treatments along the seasonal temperature decrease). The impact on offspring of a selection treatment targeting production traits of interest (absence of sexual maturation at 1+, combined with increased growth) in breeders was also evaluated. After 7–8 months of growth in captivity, offspring were stocked in natural lakes. Their growth and survival were assessed about a year later. Offspring from “cold” breeders showed lower survival than those from “warm” breeders and the selection treatment had no effect on survival. However, the selection treatment was linked to lower Fulton's condition index, which, in turn, was positively correlated to survival in lakes. This study highlights the importance of working in ecological/industrial context to fully assess the different impacts of transgenerational effects on traits and survival. Our results also have important implications for stocking practices used to support the sport fishing industry. John Wiley and Sons Inc. 2023-05-02 /pmc/articles/PMC10197224/ /pubmed/37216032 http://dx.doi.org/10.1111/eva.13553 Text en © 2023 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Houle, Carolyne Gossieaux, Philippine Bernatchez, Louis Audet, Céline Garant, Dany Transgenerational effects on body size and survival in Brook charr (Salvelinus fontinalis) |
title | Transgenerational effects on body size and survival in Brook charr (Salvelinus fontinalis) |
title_full | Transgenerational effects on body size and survival in Brook charr (Salvelinus fontinalis) |
title_fullStr | Transgenerational effects on body size and survival in Brook charr (Salvelinus fontinalis) |
title_full_unstemmed | Transgenerational effects on body size and survival in Brook charr (Salvelinus fontinalis) |
title_short | Transgenerational effects on body size and survival in Brook charr (Salvelinus fontinalis) |
title_sort | transgenerational effects on body size and survival in brook charr (salvelinus fontinalis) |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10197224/ https://www.ncbi.nlm.nih.gov/pubmed/37216032 http://dx.doi.org/10.1111/eva.13553 |
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