Hydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)

Abstract Renewable energy projects such as hydropower facilities contribute towards meeting the world`s growing energy demands and urgent need for mitigating climate change. However, such infrastructure has the potential to substantially alter the environment which, in turn, can induce new challenge...

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Autores principales:	Tormod Haraldstad, Thrond O. Haugen, Esben M. Olsen, Torbjørn Forseth, Erik Höglund
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c68a6aad92a3436ba57cecb91f89f6ef
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spelling	oai:doaj.org-article:c68a6aad92a3436ba57cecb91f89f6ef2021-12-02T16:28:50ZHydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)10.1038/s41598-021-95952-12045-2322https://doaj.org/article/c68a6aad92a3436ba57cecb91f89f6ef2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95952-1https://doaj.org/toc/2045-2322Abstract Renewable energy projects such as hydropower facilities contribute towards meeting the world`s growing energy demands and urgent need for mitigating climate change. However, such infrastructure has the potential to substantially alter the environment which, in turn, can induce new challenges related to for instance fish migration conditions. As a consequence, local adaptations related to pre-development migration conditions may be affected for influenced populations. To explore selection regimes operating at a river hydropower plant, we monitored Atlantic salmon smolt individuals during their seaward migration. When passing the hydropower plant, the smolts chose between a surface fish passage or a submerged turbine intake. Smolts were scored for behavioural type (basal locomotor activity, net restrain (a measure of escape responses) and willingness to leave a familiar environment) prior to their migration choice, and we found that smolts with high basal activity had higher probability of using the fish passage than the turbine intake. In addition, migration route choice was a partly consistent trait in that fish that had previously passed a hydroelectric facility by using a fish passage rather than the turbine intake were significantly more likely to use it again when faced with the same choice. Higher mortality among turbine migrants could potentially reduce or eliminate particular behaviour types within populations- and the corresponding population genetic diversity that is essential to cope with future environmental challenges.Tormod HaraldstadThrond O. HaugenEsben M. OlsenTorbjørn ForsethErik HöglundNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tormod Haraldstad Thrond O. Haugen Esben M. Olsen Torbjørn Forseth Erik Höglund Hydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)
description	Abstract Renewable energy projects such as hydropower facilities contribute towards meeting the world`s growing energy demands and urgent need for mitigating climate change. However, such infrastructure has the potential to substantially alter the environment which, in turn, can induce new challenges related to for instance fish migration conditions. As a consequence, local adaptations related to pre-development migration conditions may be affected for influenced populations. To explore selection regimes operating at a river hydropower plant, we monitored Atlantic salmon smolt individuals during their seaward migration. When passing the hydropower plant, the smolts chose between a surface fish passage or a submerged turbine intake. Smolts were scored for behavioural type (basal locomotor activity, net restrain (a measure of escape responses) and willingness to leave a familiar environment) prior to their migration choice, and we found that smolts with high basal activity had higher probability of using the fish passage than the turbine intake. In addition, migration route choice was a partly consistent trait in that fish that had previously passed a hydroelectric facility by using a fish passage rather than the turbine intake were significantly more likely to use it again when faced with the same choice. Higher mortality among turbine migrants could potentially reduce or eliminate particular behaviour types within populations- and the corresponding population genetic diversity that is essential to cope with future environmental challenges.
format	article
author	Tormod Haraldstad Thrond O. Haugen Esben M. Olsen Torbjørn Forseth Erik Höglund
author_facet	Tormod Haraldstad Thrond O. Haugen Esben M. Olsen Torbjørn Forseth Erik Höglund
author_sort	Tormod Haraldstad
title	Hydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)
title_short	Hydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)
title_full	Hydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)
title_fullStr	Hydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)
title_full_unstemmed	Hydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)
title_sort	hydropower-induced selection of behavioural traits in atlantic salmon (salmo salar)
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c68a6aad92a3436ba57cecb91f89f6ef
work_keys_str_mv	AT tormodharaldstad hydropowerinducedselectionofbehaviouraltraitsinatlanticsalmonsalmosalar AT throndohaugen hydropowerinducedselectionofbehaviouraltraitsinatlanticsalmonsalmosalar AT esbenmolsen hydropowerinducedselectionofbehaviouraltraitsinatlanticsalmonsalmosalar AT torbjørnforseth hydropowerinducedselectionofbehaviouraltraitsinatlanticsalmonsalmosalar AT erikhoglund hydropowerinducedselectionofbehaviouraltraitsinatlanticsalmonsalmosalar
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Hydropower-induced selection of behavioural traits in Atlantic salmon (Salmo salar)

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