Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality?
To interpret long-term trends in age and size at maturation, new statistical methods have recently been devised for estimating probabilistic maturation reaction norms based on data collected for the management of fisheries. Here we apply these methods to three Newfoundland stocks of American plaice...
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ftiiasalaxendare:oai:pure.iiasa.ac.at:7820 2023-05-15T14:30:28+02:00 Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? Barot, S. Heino, M. Morgan, M.J. Dieckmann, U. 2005-03 text http://pure.iiasa.ac.at/id/eprint/7820/ http://pure.iiasa.ac.at/id/eprint/7820/1/IR-05-015.pdf en eng IR-05-015 http://pure.iiasa.ac.at/id/eprint/7820/1/IR-05-015.pdf Barot, S. <http://pure.iiasa.ac.at/view/iiasa/1141.html>, Heino, M. <http://pure.iiasa.ac.at/view/iiasa/122.html> orcid:0000-0003-2928-3940 , Morgan, M.J., & Dieckmann, U. <http://pure.iiasa.ac.at/view/iiasa/66.html> orcid:0000-0001-7089-0393 (2005). Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? IIASA Interim Report. IIASA, Laxenburg, Austria: IR-05-015 Monograph NonPeerReviewed 2005 ftiiasalaxendare 2022-04-15T12:32:17Z To interpret long-term trends in age and size at maturation, new statistical methods have recently been devised for estimating probabilistic maturation reaction norms based on data collected for the management of fisheries. Here we apply these methods to three Newfoundland stocks of American plaice (NAFO Divisions 2J3K, 3LNO, 3Ps) and report a clear long-term shift in the maturation reaction norms of these stocks towards maturation at younger age and smaller size. Theory predicts such trends could result from fishing acting as a selective force, inducing evolutionary changes in the life histories of exploited populations. Matching long-term trends in maturation reaction norms have already been documented for several stocks that have experienced high fishing pressures (Gulf of Maine and Georges Bank cod, Northeast Arctic cod, North Sea plaice). Our results add a new dimension to these earlier findings: since fishing pressures for two stocks of Newfoundland plaice (2J3K and 3Ps) have been relatively low, our results imply that fishing is likely to result in the evolution of life histories even when fishing mortality is low, or that natural mortality has played an important role in determining selective pressures in these populations. Both options suggest that conditions for rapid life-history evolution in exploited stocks are less restrictive than previously appreciated. Book Arctic cod Arctic Newfoundland Northeast Arctic cod IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis) Arctic |
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IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis) |
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ftiiasalaxendare |
language |
English |
description |
To interpret long-term trends in age and size at maturation, new statistical methods have recently been devised for estimating probabilistic maturation reaction norms based on data collected for the management of fisheries. Here we apply these methods to three Newfoundland stocks of American plaice (NAFO Divisions 2J3K, 3LNO, 3Ps) and report a clear long-term shift in the maturation reaction norms of these stocks towards maturation at younger age and smaller size. Theory predicts such trends could result from fishing acting as a selective force, inducing evolutionary changes in the life histories of exploited populations. Matching long-term trends in maturation reaction norms have already been documented for several stocks that have experienced high fishing pressures (Gulf of Maine and Georges Bank cod, Northeast Arctic cod, North Sea plaice). Our results add a new dimension to these earlier findings: since fishing pressures for two stocks of Newfoundland plaice (2J3K and 3Ps) have been relatively low, our results imply that fishing is likely to result in the evolution of life histories even when fishing mortality is low, or that natural mortality has played an important role in determining selective pressures in these populations. Both options suggest that conditions for rapid life-history evolution in exploited stocks are less restrictive than previously appreciated. |
format |
Book |
author |
Barot, S. Heino, M. Morgan, M.J. Dieckmann, U. |
spellingShingle |
Barot, S. Heino, M. Morgan, M.J. Dieckmann, U. Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? |
author_facet |
Barot, S. Heino, M. Morgan, M.J. Dieckmann, U. |
author_sort |
Barot, S. |
title |
Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? |
title_short |
Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? |
title_full |
Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? |
title_fullStr |
Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? |
title_full_unstemmed |
Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? |
title_sort |
maturation of newfoundland american plaice (hippoglosoides platessoides): long-term trends in maturation reaction norms despite low fishing mortality? |
publisher |
IR-05-015 |
publishDate |
2005 |
url |
http://pure.iiasa.ac.at/id/eprint/7820/ http://pure.iiasa.ac.at/id/eprint/7820/1/IR-05-015.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Newfoundland Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Newfoundland Northeast Arctic cod |
op_relation |
http://pure.iiasa.ac.at/id/eprint/7820/1/IR-05-015.pdf Barot, S. <http://pure.iiasa.ac.at/view/iiasa/1141.html>, Heino, M. <http://pure.iiasa.ac.at/view/iiasa/122.html> orcid:0000-0003-2928-3940 , Morgan, M.J., & Dieckmann, U. <http://pure.iiasa.ac.at/view/iiasa/66.html> orcid:0000-0001-7089-0393 (2005). Maturation of Newfoundland American Plaice (Hippoglosoides platessoides): Long-term Trends in Maturation Reaction Norms despite Low Fishing Mortality? IIASA Interim Report. IIASA, Laxenburg, Austria: IR-05-015 |
_version_ |
1766304311457873920 |