Gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries
The longevity and low fecundity of sharks make them particularly vulnerable to over-exploitation. Previous studies have emphasized the range of natural productivities observed across elasmobranch species and have used this to explain the sustainability of some elasmobranch fisheries and the deple -...
Published in: | Journal of Northwest Atlantic Fishery Science |
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Northwest Atlantic Fisheries Organization (NAFO)
2002
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Online Access: | https://doi.org/10.2960/J.v35.m520 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Gauntlet-fisheries-for-elasmobranchs--the/991005542702007891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12135877120007891/13136857040007891 |
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ftmurdochunivall:oai:alma.61MUN_INST:11135877130007891 2024-09-15T17:41:35+00:00 Gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries Prince, J.D. 2002 pdf https://doi.org/10.2960/J.v35.m520 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Gauntlet-fisheries-for-elasmobranchs--the/991005542702007891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12135877120007891/13136857040007891 eng eng Northwest Atlantic Fisheries Organization (NAFO) ispartof: Journal of Northwest Atlantic Fishery Science spage 407 epage 416 vol 35 http://dx.doi.org/10.2960/J.v35.m520 991005542702007891 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Gauntlet-fisheries-for-elasmobranchs--the/991005542702007891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12135877120007891/13136857040007891 alma:61MUN_INST/bibs/991005542702007891 Open CC BY-NC V4.0 text Article 2002 ftmurdochunivall https://doi.org/10.2960/J.v35.m520 2024-08-15T00:52:48Z The longevity and low fecundity of sharks make them particularly vulnerable to over-exploitation. Previous studies have emphasized the range of natural productivities observed across elasmobranch species and have used this to explain the sustainability of some elasmobranch fisheries and the deple - tion of others. This paper discusses the assessment of the two principal species fished by the Southern Shark Fishery of Australia, school shark (Galeorhinus galeus) and gummy shark (Mustelus antarcticus). The modeled simulations presented here show that shark behaviour patterns and fishing techniques which restrict fishing mortality to a few juvenile age-classes may be equally or more important than the productivity of different species in determining their relative robustness under exploitation. Counter- intuitively concentrating a fishery on a few year-classes of pups, juveniles or sub-adults proves to be a robust management strategy for elasmobranch fisheries, as long as the means exist for protecting adults from fishing mortality. Furthermore this management strategy proves to be most effective with the species considered to be least productive, those with greatest longevity. The obverse of this finding is to highlight the damaging impact on elasmobranch fisheries of human activities such as by-catch, finning, sport fishing and beach protection that cause even low levels of adult mortality . Article in Journal/Newspaper Antarc* antarcticus Murdoch University Research Portal Journal of Northwest Atlantic Fishery Science 35 407 416 |
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Open Polar |
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Murdoch University Research Portal |
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ftmurdochunivall |
language |
English |
description |
The longevity and low fecundity of sharks make them particularly vulnerable to over-exploitation. Previous studies have emphasized the range of natural productivities observed across elasmobranch species and have used this to explain the sustainability of some elasmobranch fisheries and the deple - tion of others. This paper discusses the assessment of the two principal species fished by the Southern Shark Fishery of Australia, school shark (Galeorhinus galeus) and gummy shark (Mustelus antarcticus). The modeled simulations presented here show that shark behaviour patterns and fishing techniques which restrict fishing mortality to a few juvenile age-classes may be equally or more important than the productivity of different species in determining their relative robustness under exploitation. Counter- intuitively concentrating a fishery on a few year-classes of pups, juveniles or sub-adults proves to be a robust management strategy for elasmobranch fisheries, as long as the means exist for protecting adults from fishing mortality. Furthermore this management strategy proves to be most effective with the species considered to be least productive, those with greatest longevity. The obverse of this finding is to highlight the damaging impact on elasmobranch fisheries of human activities such as by-catch, finning, sport fishing and beach protection that cause even low levels of adult mortality . |
format |
Article in Journal/Newspaper |
author |
Prince, J.D. |
spellingShingle |
Prince, J.D. Gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries |
author_facet |
Prince, J.D. |
author_sort |
Prince, J.D. |
title |
Gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries |
title_short |
Gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries |
title_full |
Gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries |
title_fullStr |
Gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries |
title_full_unstemmed |
Gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries |
title_sort |
gauntlet fisheries for elasmobranchs – the secret of sustainable shark fisheries |
publisher |
Northwest Atlantic Fisheries Organization (NAFO) |
publishDate |
2002 |
url |
https://doi.org/10.2960/J.v35.m520 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Gauntlet-fisheries-for-elasmobranchs--the/991005542702007891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12135877120007891/13136857040007891 |
genre |
Antarc* antarcticus |
genre_facet |
Antarc* antarcticus |
op_relation |
ispartof: Journal of Northwest Atlantic Fishery Science spage 407 epage 416 vol 35 http://dx.doi.org/10.2960/J.v35.m520 991005542702007891 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Gauntlet-fisheries-for-elasmobranchs--the/991005542702007891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12135877120007891/13136857040007891 alma:61MUN_INST/bibs/991005542702007891 |
op_rights |
Open CC BY-NC V4.0 |
op_doi |
https://doi.org/10.2960/J.v35.m520 |
container_title |
Journal of Northwest Atlantic Fishery Science |
container_volume |
35 |
container_start_page |
407 |
op_container_end_page |
416 |
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1810487803587330048 |