The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon
Abstract Although heritability estimates for traits potentially under natural selection are increasingly being reported, their estimation remains a challenge if we are to understand the patterns of adaptive phenotypic change in nature. Given the potentially important role of selection on the early l...
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crwiley:10.1111/j.1420-9101.2010.01941.x 2023-12-03T10:19:33+01:00 The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon PáEZ, D. J. MORRISSEY, M. BERNATCHEZ, L. DODSON, J. J. 2010 http://dx.doi.org/10.1111/j.1420-9101.2010.01941.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1420-9101.2010.01941.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1420-9101.2010.01941.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Evolutionary Biology volume 23, issue 4, page 757-768 ISSN 1010-061X 1420-9101 Ecology, Evolution, Behavior and Systematics journal-article 2010 crwiley https://doi.org/10.1111/j.1420-9101.2010.01941.x 2023-11-09T14:29:38Z Abstract Although heritability estimates for traits potentially under natural selection are increasingly being reported, their estimation remains a challenge if we are to understand the patterns of adaptive phenotypic change in nature. Given the potentially important role of selection on the early life phenotype, and thereby on future life history events in many fish species, we conducted a common garden experiment, using the Atlantic salmon ( Salmo salar L.), with two major aims. The first objective is to determine how the site of origin, the paternal sexual tactic and additive genetic effects influence phenotypic variation of several morphological traits at hatching and emergence. The second aim is to test whether a link exists between phenotypic characteristics early in life and the incidence of male alternative tactics later in life. We found no evidence of a site or paternal effect on any morphological trait at hatching or emergence, suggesting that the spatial phenotypic differences observed in the natural river system from which these fish originated are mainly environmentally driven. However, we do find significant heritabilities and maternal effects for several traits, including body size. No direct evidence was found correlating the incidence of precocious maturation with early life characteristics. We suggest that under good growing conditions, body size and other traits at early developmental stages are not reliable cues for the surpassing of the threshold values associated with male sexual development. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library (via Crossref) Journal of Evolutionary Biology 23 4 757 768 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics PáEZ, D. J. MORRISSEY, M. BERNATCHEZ, L. DODSON, J. J. The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
Abstract Although heritability estimates for traits potentially under natural selection are increasingly being reported, their estimation remains a challenge if we are to understand the patterns of adaptive phenotypic change in nature. Given the potentially important role of selection on the early life phenotype, and thereby on future life history events in many fish species, we conducted a common garden experiment, using the Atlantic salmon ( Salmo salar L.), with two major aims. The first objective is to determine how the site of origin, the paternal sexual tactic and additive genetic effects influence phenotypic variation of several morphological traits at hatching and emergence. The second aim is to test whether a link exists between phenotypic characteristics early in life and the incidence of male alternative tactics later in life. We found no evidence of a site or paternal effect on any morphological trait at hatching or emergence, suggesting that the spatial phenotypic differences observed in the natural river system from which these fish originated are mainly environmentally driven. However, we do find significant heritabilities and maternal effects for several traits, including body size. No direct evidence was found correlating the incidence of precocious maturation with early life characteristics. We suggest that under good growing conditions, body size and other traits at early developmental stages are not reliable cues for the surpassing of the threshold values associated with male sexual development. |
format |
Article in Journal/Newspaper |
author |
PáEZ, D. J. MORRISSEY, M. BERNATCHEZ, L. DODSON, J. J. |
author_facet |
PáEZ, D. J. MORRISSEY, M. BERNATCHEZ, L. DODSON, J. J. |
author_sort |
PáEZ, D. J. |
title |
The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon |
title_short |
The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon |
title_full |
The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon |
title_fullStr |
The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon |
title_full_unstemmed |
The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon |
title_sort |
genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in atlantic salmon |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1420-9101.2010.01941.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1420-9101.2010.01941.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1420-9101.2010.01941.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Evolutionary Biology volume 23, issue 4, page 757-768 ISSN 1010-061X 1420-9101 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1420-9101.2010.01941.x |
container_title |
Journal of Evolutionary Biology |
container_volume |
23 |
container_issue |
4 |
container_start_page |
757 |
op_container_end_page |
768 |
_version_ |
1784266880886767616 |