ORIGINAL ARTICLE: Comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for Flemish Cap cod ( Gadus morhua )
Abstract Age and length at maturation have declined in many fish populations and this has been hypothesized to be a genetic change caused by high fishing mortality. Probabilistic Maturation Reaction Norms (PMRNs) have been used as a tool to gain a better understanding of the possible genetic nature...
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crwiley:10.1111/j.1752-4571.2009.00084.x 2023-12-03T10:22:54+01:00 ORIGINAL ARTICLE: Comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for Flemish Cap cod ( Gadus morhua ) Pérez‐Rodríguez, Alfonso Morgan, Marie Joanne Saborido‐Rey, Fran 2009 http://dx.doi.org/10.1111/j.1752-4571.2009.00084.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1752-4571.2009.00084.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1752-4571.2009.00084.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Evolutionary Applications volume 2, issue 3, page 291-298 ISSN 1752-4571 1752-4571 General Agricultural and Biological Sciences Genetics Ecology, Evolution, Behavior and Systematics journal-article 2009 crwiley https://doi.org/10.1111/j.1752-4571.2009.00084.x 2023-11-09T14:16:28Z Abstract Age and length at maturation have declined in many fish populations and this has been hypothesized to be a genetic change caused by high fishing mortality. Probabilistic Maturation Reaction Norms (PMRNs) have been used as a tool to gain a better understanding of the possible genetic nature of these changes. The demographic and direct methods are two ways to calculate PMRNs. The data requirements are more often met for the demographic method than for the direct method which requires the identification of recruit spawners. However, the demographic method relies on more assumptions than the direct method, typically assuming equality of growth and mortality rates for immature and mature individuals within an age class. This study provides the first direct comparison of demographic and direct methods and shows that both methods produce comparable results. Differences between methods are hypothesized to be owed to possible differences in growth rate between mature and immature individuals in Flemish Cap cod. Article in Journal/Newspaper Gadus morhua Wiley Online Library (via Crossref) Evolutionary Applications 2 3 291 298 |
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Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
General Agricultural and Biological Sciences Genetics Ecology, Evolution, Behavior and Systematics |
spellingShingle |
General Agricultural and Biological Sciences Genetics Ecology, Evolution, Behavior and Systematics Pérez‐Rodríguez, Alfonso Morgan, Marie Joanne Saborido‐Rey, Fran ORIGINAL ARTICLE: Comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for Flemish Cap cod ( Gadus morhua ) |
topic_facet |
General Agricultural and Biological Sciences Genetics Ecology, Evolution, Behavior and Systematics |
description |
Abstract Age and length at maturation have declined in many fish populations and this has been hypothesized to be a genetic change caused by high fishing mortality. Probabilistic Maturation Reaction Norms (PMRNs) have been used as a tool to gain a better understanding of the possible genetic nature of these changes. The demographic and direct methods are two ways to calculate PMRNs. The data requirements are more often met for the demographic method than for the direct method which requires the identification of recruit spawners. However, the demographic method relies on more assumptions than the direct method, typically assuming equality of growth and mortality rates for immature and mature individuals within an age class. This study provides the first direct comparison of demographic and direct methods and shows that both methods produce comparable results. Differences between methods are hypothesized to be owed to possible differences in growth rate between mature and immature individuals in Flemish Cap cod. |
format |
Article in Journal/Newspaper |
author |
Pérez‐Rodríguez, Alfonso Morgan, Marie Joanne Saborido‐Rey, Fran |
author_facet |
Pérez‐Rodríguez, Alfonso Morgan, Marie Joanne Saborido‐Rey, Fran |
author_sort |
Pérez‐Rodríguez, Alfonso |
title |
ORIGINAL ARTICLE: Comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for Flemish Cap cod ( Gadus morhua ) |
title_short |
ORIGINAL ARTICLE: Comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for Flemish Cap cod ( Gadus morhua ) |
title_full |
ORIGINAL ARTICLE: Comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for Flemish Cap cod ( Gadus morhua ) |
title_fullStr |
ORIGINAL ARTICLE: Comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for Flemish Cap cod ( Gadus morhua ) |
title_full_unstemmed |
ORIGINAL ARTICLE: Comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for Flemish Cap cod ( Gadus morhua ) |
title_sort |
original article: comparison of demographic and direct methods to calculate probabilistic maturation reaction norms for flemish cap cod ( gadus morhua ) |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1752-4571.2009.00084.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1752-4571.2009.00084.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1752-4571.2009.00084.x |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Evolutionary Applications volume 2, issue 3, page 291-298 ISSN 1752-4571 1752-4571 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1752-4571.2009.00084.x |
container_title |
Evolutionary Applications |
container_volume |
2 |
container_issue |
3 |
container_start_page |
291 |
op_container_end_page |
298 |
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1784270906325991424 |