The Economic Repercussions of Fisheries-induced Evolution
Human-induced changes in life-history traits have been observed for many harvested populations, with a component of those changes being attributed to an evolutionary (i.e., genetic) response. Most notably, fish stocks that experience high fishing mortality show a tendency to mature earlier and at a...
Main Authors: | , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | English unknown |
Published: |
International Institute of Fisheries Economics and Trade
|
Subjects: | |
Online Access: | https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/2f75rd53p |
id |
ftoregonstate:ir.library.oregonstate.edu:2f75rd53p |
---|---|
record_format |
openpolar |
spelling |
ftoregonstate:ir.library.oregonstate.edu:2f75rd53p 2024-09-15T17:52:28+00:00 The Economic Repercussions of Fisheries-induced Evolution Eikeset, Anne Maria Richter, Andries Dunlop, Erin Dieckmann, Ulf Stenseth, Nils Chr. https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/2f75rd53p English [eng] eng unknown International Institute of Fisheries Economics and Trade https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/2f75rd53p Copyright Not Evaluated Fisheries -- Economic aspects -- Congresses Sustainable fisheries -- Congresses Other ftoregonstate 2024-07-22T18:06:04Z Human-induced changes in life-history traits have been observed for many harvested populations, with a component of those changes being attributed to an evolutionary (i.e., genetic) response. Most notably, fish stocks that experience high fishing mortality show a tendency to mature earlier and at a smaller size. Some have suggested that fisheries-induced evolution could affect the fishery’s yield and therefore have economic repercussions for society. Yet, this has not been formally investigated. We use data from 1932 to 2005 to develop a bio-economic model specifically for Northeast Arctic cod that allows us to compare the economic yield in scenarios with and without evolution of key life-history traits. We also compare a “business as usual” scenario where fishing continues at its current pace, with a scenario in which harvest is controlled through an optimal control rule. Our model predicts that fisheries-induced evolution decreases economic yield if fishing mortality rates continue at their current high levels. We also find that maximum economic yield is achieved at a considerably lower fishing mortality than what the stock has historically experienced. At this lower mortality, fisheries-induced evolution is less pronounced and actually increases the spawning stock biomass and economic yield. Overall, we find that evolutionary and non-evolutionary models recommend similar harvesting rates and the overriding message is that higher economic yield can be obtained by lower harvest rates irrespective of whether evolution occurs or not. KEYWORDS: Bioeconomic Modeling Part III, Modeling & Economic Theory, Fisheries economics Other/Unknown Material Arctic cod Northeast Arctic cod ScholarsArchive@OSU (Oregon State University) |
institution |
Open Polar |
collection |
ScholarsArchive@OSU (Oregon State University) |
op_collection_id |
ftoregonstate |
language |
English unknown |
topic |
Fisheries -- Economic aspects -- Congresses Sustainable fisheries -- Congresses |
spellingShingle |
Fisheries -- Economic aspects -- Congresses Sustainable fisheries -- Congresses Eikeset, Anne Maria Richter, Andries Dunlop, Erin Dieckmann, Ulf Stenseth, Nils Chr. The Economic Repercussions of Fisheries-induced Evolution |
topic_facet |
Fisheries -- Economic aspects -- Congresses Sustainable fisheries -- Congresses |
description |
Human-induced changes in life-history traits have been observed for many harvested populations, with a component of those changes being attributed to an evolutionary (i.e., genetic) response. Most notably, fish stocks that experience high fishing mortality show a tendency to mature earlier and at a smaller size. Some have suggested that fisheries-induced evolution could affect the fishery’s yield and therefore have economic repercussions for society. Yet, this has not been formally investigated. We use data from 1932 to 2005 to develop a bio-economic model specifically for Northeast Arctic cod that allows us to compare the economic yield in scenarios with and without evolution of key life-history traits. We also compare a “business as usual” scenario where fishing continues at its current pace, with a scenario in which harvest is controlled through an optimal control rule. Our model predicts that fisheries-induced evolution decreases economic yield if fishing mortality rates continue at their current high levels. We also find that maximum economic yield is achieved at a considerably lower fishing mortality than what the stock has historically experienced. At this lower mortality, fisheries-induced evolution is less pronounced and actually increases the spawning stock biomass and economic yield. Overall, we find that evolutionary and non-evolutionary models recommend similar harvesting rates and the overriding message is that higher economic yield can be obtained by lower harvest rates irrespective of whether evolution occurs or not. KEYWORDS: Bioeconomic Modeling Part III, Modeling & Economic Theory, Fisheries economics |
format |
Other/Unknown Material |
author |
Eikeset, Anne Maria Richter, Andries Dunlop, Erin Dieckmann, Ulf Stenseth, Nils Chr. |
author_facet |
Eikeset, Anne Maria Richter, Andries Dunlop, Erin Dieckmann, Ulf Stenseth, Nils Chr. |
author_sort |
Eikeset, Anne Maria |
title |
The Economic Repercussions of Fisheries-induced Evolution |
title_short |
The Economic Repercussions of Fisheries-induced Evolution |
title_full |
The Economic Repercussions of Fisheries-induced Evolution |
title_fullStr |
The Economic Repercussions of Fisheries-induced Evolution |
title_full_unstemmed |
The Economic Repercussions of Fisheries-induced Evolution |
title_sort |
economic repercussions of fisheries-induced evolution |
publisher |
International Institute of Fisheries Economics and Trade |
url |
https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/2f75rd53p |
genre |
Arctic cod Northeast Arctic cod |
genre_facet |
Arctic cod Northeast Arctic cod |
op_relation |
https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/2f75rd53p |
op_rights |
Copyright Not Evaluated |
_version_ |
1810294493446930432 |