Life history change in commercially exploited fish stocks: an analysis of trends across studies
Age and size at maturation have declined dramatically in many commercial fish stocks over the past few decades – changes that have been widely attributed to fishing pressure. We performed an analysis of such trends across multiple studies, to test for the consistency of life history changes under fi...
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ftpubmed:oai:pubmedcentral.nih.gov:3352497 2023-05-15T17:33:25+02:00 Life history change in commercially exploited fish stocks: an analysis of trends across studies Sharpe, Diana M T Hendry, Andrew P 2009-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352497 https://doi.org/10.1111/j.1752-4571.2009.00080.x en eng Blackwell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352497 http://dx.doi.org/10.1111/j.1752-4571.2009.00080.x © 2009 The Authors. Journal compilation © 2009 Blackwell Publishing Ltd Synthesis Text 2009 ftpubmed https://doi.org/10.1111/j.1752-4571.2009.00080.x 2013-09-04T07:15:52Z Age and size at maturation have declined dramatically in many commercial fish stocks over the past few decades – changes that have been widely attributed to fishing pressure. We performed an analysis of such trends across multiple studies, to test for the consistency of life history changes under fishing, and for their association with the intensity of exploitation (fishing mortality rate). We analyzed 143 time series from 37 commercial fish stocks, the majority of which originated from the North Atlantic. Rates of phenotypic change were calculated for two traditional maturation indices (length and age at 50% maturity), as well as for probabilistic maturation reaction norms (PMRNs). We found that all three indices declined in heavily exploited populations, and at a rate that was strongly correlated with the intensity of fishing (for length at 50% maturity and PMRNs). These results support previous assertions that fishing pressure is playing a major role in the life history changes observed in commercial fish stocks. Rates of change were as strong for PMRNs as for age and size at 50% maturity, which is consistent with the hypothesis that fishing-induced phenotypic changes can sometimes have a genetic basis. Text North Atlantic PubMed Central (PMC) Evolutionary Applications 2 3 260 275 |
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Synthesis Sharpe, Diana M T Hendry, Andrew P Life history change in commercially exploited fish stocks: an analysis of trends across studies |
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Age and size at maturation have declined dramatically in many commercial fish stocks over the past few decades – changes that have been widely attributed to fishing pressure. We performed an analysis of such trends across multiple studies, to test for the consistency of life history changes under fishing, and for their association with the intensity of exploitation (fishing mortality rate). We analyzed 143 time series from 37 commercial fish stocks, the majority of which originated from the North Atlantic. Rates of phenotypic change were calculated for two traditional maturation indices (length and age at 50% maturity), as well as for probabilistic maturation reaction norms (PMRNs). We found that all three indices declined in heavily exploited populations, and at a rate that was strongly correlated with the intensity of fishing (for length at 50% maturity and PMRNs). These results support previous assertions that fishing pressure is playing a major role in the life history changes observed in commercial fish stocks. Rates of change were as strong for PMRNs as for age and size at 50% maturity, which is consistent with the hypothesis that fishing-induced phenotypic changes can sometimes have a genetic basis. |
format |
Text |
author |
Sharpe, Diana M T Hendry, Andrew P |
author_facet |
Sharpe, Diana M T Hendry, Andrew P |
author_sort |
Sharpe, Diana M T |
title |
Life history change in commercially exploited fish stocks: an analysis of trends across studies |
title_short |
Life history change in commercially exploited fish stocks: an analysis of trends across studies |
title_full |
Life history change in commercially exploited fish stocks: an analysis of trends across studies |
title_fullStr |
Life history change in commercially exploited fish stocks: an analysis of trends across studies |
title_full_unstemmed |
Life history change in commercially exploited fish stocks: an analysis of trends across studies |
title_sort |
life history change in commercially exploited fish stocks: an analysis of trends across studies |
publisher |
Blackwell Publishing Ltd |
publishDate |
2009 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352497 https://doi.org/10.1111/j.1752-4571.2009.00080.x |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352497 http://dx.doi.org/10.1111/j.1752-4571.2009.00080.x |
op_rights |
© 2009 The Authors. Journal compilation © 2009 Blackwell Publishing Ltd |
op_doi |
https://doi.org/10.1111/j.1752-4571.2009.00080.x |
container_title |
Evolutionary Applications |
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2 |
container_issue |
3 |
container_start_page |
260 |
op_container_end_page |
275 |
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1766131924542160896 |