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Uncovering unique plasticity in life history of an endangered centenarian fish

The ability to adapt to changing environments is fundamental for species persistence. Both plasticity and genetic selection are potential drivers that allow for traits to be advantageous, thus leading to increases in survival or fitness. Identifying phenotypic plasticity in life history traits of lo...

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Autores principales: Hamel, Martin J., Spurgeon, Jonathan J., Steffensen, Kirk D., Pegg, Mark A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7393173/
https://www.ncbi.nlm.nih.gov/pubmed/32733007
http://dx.doi.org/10.1038/s41598-020-69911-1
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author Hamel, Martin J.
Spurgeon, Jonathan J.
Steffensen, Kirk D.
Pegg, Mark A.
author_facet Hamel, Martin J.
Spurgeon, Jonathan J.
Steffensen, Kirk D.
Pegg, Mark A.
author_sort Hamel, Martin J.
collection PubMed
description The ability to adapt to changing environments is fundamental for species persistence. Both plasticity and genetic selection are potential drivers that allow for traits to be advantageous, thus leading to increases in survival or fitness. Identifying phenotypic plasticity in life history traits of long-lived organisms can be difficult owing to high survival, long generation times, and few studies at sufficient spatial and temporal scales to elicit a plastic response within a population. To begin to understand phenotypic plasticity of a long-lived freshwater fish in response to environmental conditions, we used a long-term data set consisting of over 1,200 mark-recapture events to inform our understanding of dynamic rate functions and life history attributes. Furthermore, we used a common garden experimental approach to confirm whether changes in life history traits are in response to plasticity in the reaction norm or are genetically derived. Using these approaches, we demonstrated differences in life history traits among Pallid Sturgeon (Scaphirhynchus albus) occupying river segments of varying physical and hydrological stress. The common garden experiment corroborated plastic phenotypic expression in reaction norms for age at first maturity, longevity, fecundity, and maximum size. These growth-mediated attributes resulted in differences in overall fitness traits, where Pallid Sturgeon fecundity was greater than a tenfold difference and 3–6 times the number of life-time spawning events. Anthropogenic modifications to river form and function are likely responsible for the variation in life history attributes resulting from an increased metabolic demand for maintaining station, foraging, and migration. Collectively, our approach provided surprising insight into the capabilities of a centenarian fish to dramatically respond to a changing environment.
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spelling pubmed-73931732020-08-03 Uncovering unique plasticity in life history of an endangered centenarian fish Hamel, Martin J. Spurgeon, Jonathan J. Steffensen, Kirk D. Pegg, Mark A. Sci Rep Article The ability to adapt to changing environments is fundamental for species persistence. Both plasticity and genetic selection are potential drivers that allow for traits to be advantageous, thus leading to increases in survival or fitness. Identifying phenotypic plasticity in life history traits of long-lived organisms can be difficult owing to high survival, long generation times, and few studies at sufficient spatial and temporal scales to elicit a plastic response within a population. To begin to understand phenotypic plasticity of a long-lived freshwater fish in response to environmental conditions, we used a long-term data set consisting of over 1,200 mark-recapture events to inform our understanding of dynamic rate functions and life history attributes. Furthermore, we used a common garden experimental approach to confirm whether changes in life history traits are in response to plasticity in the reaction norm or are genetically derived. Using these approaches, we demonstrated differences in life history traits among Pallid Sturgeon (Scaphirhynchus albus) occupying river segments of varying physical and hydrological stress. The common garden experiment corroborated plastic phenotypic expression in reaction norms for age at first maturity, longevity, fecundity, and maximum size. These growth-mediated attributes resulted in differences in overall fitness traits, where Pallid Sturgeon fecundity was greater than a tenfold difference and 3–6 times the number of life-time spawning events. Anthropogenic modifications to river form and function are likely responsible for the variation in life history attributes resulting from an increased metabolic demand for maintaining station, foraging, and migration. Collectively, our approach provided surprising insight into the capabilities of a centenarian fish to dramatically respond to a changing environment. Nature Publishing Group UK 2020-07-30 /pmc/articles/PMC7393173/ /pubmed/32733007 http://dx.doi.org/10.1038/s41598-020-69911-1 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Hamel, Martin J.
Spurgeon, Jonathan J.
Steffensen, Kirk D.
Pegg, Mark A.
Uncovering unique plasticity in life history of an endangered centenarian fish
title Uncovering unique plasticity in life history of an endangered centenarian fish
title_full Uncovering unique plasticity in life history of an endangered centenarian fish
title_fullStr Uncovering unique plasticity in life history of an endangered centenarian fish
title_full_unstemmed Uncovering unique plasticity in life history of an endangered centenarian fish
title_short Uncovering unique plasticity in life history of an endangered centenarian fish
title_sort uncovering unique plasticity in life history of an endangered centenarian fish
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7393173/
https://www.ncbi.nlm.nih.gov/pubmed/32733007
http://dx.doi.org/10.1038/s41598-020-69911-1
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