Ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes
Captive rearing often alters the phenotypes of organisms that are destined for release into the wild. Natural selection on these unnatural phenotypes could have important consequences for the utility of captive rearing as a restoration approach. We show that normal hatchery practices significantly a...
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ftpubmed:oai:pubmedcentral.nih.gov:3352472 2023-05-15T15:32:19+02:00 Ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes Bailey, Michael M Lachapelle, Kevin A Kinnison, Michael T 2010-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352472 https://doi.org/10.1111/j.1752-4571.2009.00115.x en eng Blackwell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352472 http://dx.doi.org/10.1111/j.1752-4571.2009.00115.x © 2010 Blackwell Publishing Ltd Original Articles Text 2010 ftpubmed https://doi.org/10.1111/j.1752-4571.2009.00115.x 2013-09-04T07:15:52Z Captive rearing often alters the phenotypes of organisms that are destined for release into the wild. Natural selection on these unnatural phenotypes could have important consequences for the utility of captive rearing as a restoration approach. We show that normal hatchery practices significantly advance the development of endangered Atlantic salmon (Salmo salar) fry by 30+ days. As a result, hatchery fry might be expected to face strong natural selection resulting from their developmental asynchrony. We investigated patterns of ontogenetic selection acting on hatchery produced salmon fry by experimentally manipulating fry development stage at stocking. Contrary to simple predictions, we found evidence for strong stabilizing selection on the ontogeny of unfed hatchery fry, with weaker evidence for positive directional selection on the ontogeny of fed fry. These selection patterns suggest a seasonally independent tradeoff between abiotic or biotic selection favoring advanced development and physiological selection linked to risk of starvation in unfed fry. We show, through a heuristic exercise, how such selection on ontogeny may exacerbate problems in restoration efforts by impairing fry productivity and reducing effective population sizes by 13–81%. Text Atlantic salmon Salmo salar PubMed Central (PMC) Evolutionary Applications 3 4 340 351 |
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Original Articles |
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Original Articles Bailey, Michael M Lachapelle, Kevin A Kinnison, Michael T Ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes |
topic_facet |
Original Articles |
description |
Captive rearing often alters the phenotypes of organisms that are destined for release into the wild. Natural selection on these unnatural phenotypes could have important consequences for the utility of captive rearing as a restoration approach. We show that normal hatchery practices significantly advance the development of endangered Atlantic salmon (Salmo salar) fry by 30+ days. As a result, hatchery fry might be expected to face strong natural selection resulting from their developmental asynchrony. We investigated patterns of ontogenetic selection acting on hatchery produced salmon fry by experimentally manipulating fry development stage at stocking. Contrary to simple predictions, we found evidence for strong stabilizing selection on the ontogeny of unfed hatchery fry, with weaker evidence for positive directional selection on the ontogeny of fed fry. These selection patterns suggest a seasonally independent tradeoff between abiotic or biotic selection favoring advanced development and physiological selection linked to risk of starvation in unfed fry. We show, through a heuristic exercise, how such selection on ontogeny may exacerbate problems in restoration efforts by impairing fry productivity and reducing effective population sizes by 13–81%. |
format |
Text |
author |
Bailey, Michael M Lachapelle, Kevin A Kinnison, Michael T |
author_facet |
Bailey, Michael M Lachapelle, Kevin A Kinnison, Michael T |
author_sort |
Bailey, Michael M |
title |
Ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes |
title_short |
Ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes |
title_full |
Ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes |
title_fullStr |
Ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes |
title_full_unstemmed |
Ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes |
title_sort |
ontogenetic selection on hatchery salmon in the wild: natural selection on artificial phenotypes |
publisher |
Blackwell Publishing Ltd |
publishDate |
2010 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352472 https://doi.org/10.1111/j.1752-4571.2009.00115.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352472 http://dx.doi.org/10.1111/j.1752-4571.2009.00115.x |
op_rights |
© 2010 Blackwell Publishing Ltd |
op_doi |
https://doi.org/10.1111/j.1752-4571.2009.00115.x |
container_title |
Evolutionary Applications |
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3 |
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4 |
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340 |
op_container_end_page |
351 |
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1766362831397060608 |