Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference
In exploited fish stocks, long-term trends towards earlier maturation have been interpreted as an evolutionary response to sustained, high fishing mortality. The evidence used to support this diagnosis consists of directional shifts in probabilistic maturation reaction norms (PMRNs) that are consist...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter Research
2007
|
Subjects: | |
Online Access: | http://hdl.handle.net/1893/9274 https://doi.org/10.3354/meps335301 http://dspace.stir.ac.uk/bitstream/1893/9274/1/Marshall_McAdam_2007_effects_on_maturation.pdf |
id |
ftunivstirling:oai:dspace.stir.ac.uk:1893/9274 |
---|---|
record_format |
openpolar |
spelling |
ftunivstirling:oai:dspace.stir.ac.uk:1893/9274 2023-05-15T14:30:26+02:00 Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference Marshall, C Tara McAdam, Bruce James University of Aberdeen Institute of Aquaculture orcid:0000-0001-6117-2437 2007-04 application/pdf http://hdl.handle.net/1893/9274 https://doi.org/10.3354/meps335301 http://dspace.stir.ac.uk/bitstream/1893/9274/1/Marshall_McAdam_2007_effects_on_maturation.pdf en eng Inter Research Marshall CT & McAdam BJ (2007) Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference. Marine Ecology Progress Series, 335, pp. 301-310. https://doi.org/10.3354/meps335301 http://hdl.handle.net/1893/9274 doi:10.3354/meps335301 WOS:000246486800031 762227 http://dspace.stir.ac.uk/bitstream/1893/9274/1/Marshall_McAdam_2007_effects_on_maturation.pdf THis publication is open-access. Open access publishing allows free access to and distribution of published articles where the author retains copyright of their work by employing a Creative Commons attribution licence. Proper attribution of authorship and correct citation details should be given. Publisher’s policy available from Open Access under Creative Commons licence (CC-BY 3.0): This licence satisfies the requirements for authors funded by UK Research Councils. http://creativecommons.org/licenses/by/3.0/ http://creativecommons.org/licenses/by/3.0/ CC-BY cod Gadus morhua maturation probabilistic maturation reaction norms condition plasticity simulation fisheries-induced evolution Journal Article VoR - Version of Record 2007 ftunivstirling https://doi.org/10.3354/meps335301 2022-06-13T18:44:45Z In exploited fish stocks, long-term trends towards earlier maturation have been interpreted as an evolutionary response to sustained, high fishing mortality. The evidence used to support this diagnosis consists of directional shifts in probabilistic maturation reaction norms (PMRNs) that are consistent with the expectation that high fishing mortality favours the genotype for early maturation. Most PMRNs describe the probability of becoming mature solely as a function of age and length. Because they do not fully account for several physiological aspects of maturation (including growth effects on maturation, critical time windows for maturation decisions and developmental thresholds for maturation), it is possible that the observed shifts in PMRNs that are currently being attributed to changes in genotype actually reflect environmental effects on maturation. In this study, a comparative approach was used to interrogate the historical database for Northeast Arctic cod Gadus morhua in relation to 2 contrasting but not mutually exclusive hypotheses: (1) that there is a significant effect of food availability on the probability of being mature, using condition as a proxy for food availability; and (2) that there has been a long-term shift in the PMRN for maturation in a direction that is consistent with a diagnosis of fisheries-induced evolution. The results show that the maturation trends in Northeast Arctic cod could be variously interpreted as showing a strong environmental effect, no genetic effect, or a strong genetic effect. If the scope of the analysis had been restricted to testing a single hypothesis related to either an environmental effect or a genetic effect, then the study could very easily have made a Type I error of inference. A more integrated view of maturation, incorporating key aspects of the physiological processes that culminate in maturation, is therefore required to avoid incorrect inferences about the underlying causes of earlier maturation. Article in Journal/Newspaper Arctic cod Arctic Gadus morhua Northeast Arctic cod University of Stirling: Stirling Digital Research Repository Arctic Marine Ecology Progress Series 335 301 310 |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
cod Gadus morhua maturation probabilistic maturation reaction norms condition plasticity simulation fisheries-induced evolution |
spellingShingle |
cod Gadus morhua maturation probabilistic maturation reaction norms condition plasticity simulation fisheries-induced evolution Marshall, C Tara McAdam, Bruce James Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference |
topic_facet |
cod Gadus morhua maturation probabilistic maturation reaction norms condition plasticity simulation fisheries-induced evolution |
description |
In exploited fish stocks, long-term trends towards earlier maturation have been interpreted as an evolutionary response to sustained, high fishing mortality. The evidence used to support this diagnosis consists of directional shifts in probabilistic maturation reaction norms (PMRNs) that are consistent with the expectation that high fishing mortality favours the genotype for early maturation. Most PMRNs describe the probability of becoming mature solely as a function of age and length. Because they do not fully account for several physiological aspects of maturation (including growth effects on maturation, critical time windows for maturation decisions and developmental thresholds for maturation), it is possible that the observed shifts in PMRNs that are currently being attributed to changes in genotype actually reflect environmental effects on maturation. In this study, a comparative approach was used to interrogate the historical database for Northeast Arctic cod Gadus morhua in relation to 2 contrasting but not mutually exclusive hypotheses: (1) that there is a significant effect of food availability on the probability of being mature, using condition as a proxy for food availability; and (2) that there has been a long-term shift in the PMRN for maturation in a direction that is consistent with a diagnosis of fisheries-induced evolution. The results show that the maturation trends in Northeast Arctic cod could be variously interpreted as showing a strong environmental effect, no genetic effect, or a strong genetic effect. If the scope of the analysis had been restricted to testing a single hypothesis related to either an environmental effect or a genetic effect, then the study could very easily have made a Type I error of inference. A more integrated view of maturation, incorporating key aspects of the physiological processes that culminate in maturation, is therefore required to avoid incorrect inferences about the underlying causes of earlier maturation. |
author2 |
University of Aberdeen Institute of Aquaculture orcid:0000-0001-6117-2437 |
format |
Article in Journal/Newspaper |
author |
Marshall, C Tara McAdam, Bruce James |
author_facet |
Marshall, C Tara McAdam, Bruce James |
author_sort |
Marshall, C Tara |
title |
Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference |
title_short |
Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference |
title_full |
Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference |
title_fullStr |
Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference |
title_full_unstemmed |
Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference |
title_sort |
integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference |
publisher |
Inter Research |
publishDate |
2007 |
url |
http://hdl.handle.net/1893/9274 https://doi.org/10.3354/meps335301 http://dspace.stir.ac.uk/bitstream/1893/9274/1/Marshall_McAdam_2007_effects_on_maturation.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Gadus morhua Northeast Arctic cod |
op_relation |
Marshall CT & McAdam BJ (2007) Integrated perspectives on genetic and environmental effects on maturation can reduce potential for errors of inference. Marine Ecology Progress Series, 335, pp. 301-310. https://doi.org/10.3354/meps335301 http://hdl.handle.net/1893/9274 doi:10.3354/meps335301 WOS:000246486800031 762227 http://dspace.stir.ac.uk/bitstream/1893/9274/1/Marshall_McAdam_2007_effects_on_maturation.pdf |
op_rights |
THis publication is open-access. Open access publishing allows free access to and distribution of published articles where the author retains copyright of their work by employing a Creative Commons attribution licence. Proper attribution of authorship and correct citation details should be given. Publisher’s policy available from Open Access under Creative Commons licence (CC-BY 3.0): This licence satisfies the requirements for authors funded by UK Research Councils. http://creativecommons.org/licenses/by/3.0/ http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/meps335301 |
container_title |
Marine Ecology Progress Series |
container_volume |
335 |
container_start_page |
301 |
op_container_end_page |
310 |
_version_ |
1766304275213844480 |