Murky waters: Searching for structure in genetically depauperate blue threadfin populations of Western Australia
The blue threadfin (Eleutheronema tetradactylum) is an exploited fishery species in southeast Asia andAustralia. Demographic studies have revealed fine-scale stock structure throughout the Australian coastline, with demographically isolated populations separated by only tens of km. Similarly, popula...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Elsevier BV
2013
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0165783613000817?via=ihub http://hdl.handle.net/20.500.11937/25563 |
| _version_ | 1848751744394199040 |
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| author | Horne, J. Momigliano, P. Van Herwerden, L. Newman, Stephen |
| author_facet | Horne, J. Momigliano, P. Van Herwerden, L. Newman, Stephen |
| author_sort | Horne, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The blue threadfin (Eleutheronema tetradactylum) is an exploited fishery species in southeast Asia andAustralia. Demographic studies have revealed fine-scale stock structure throughout the Australian coastline, with demographically isolated populations separated by only tens of km. Similarly, populationgenetic analysis revealed fine-scale structure across most of its Australian range with important implications for fisheries management. However, in northern Western Australia, genetic stock structureanalysis showed a contradictory lack of structure. In the present study, one mtDNA marker and a suiteof five microsatellite loci were used to further investigate the stock structure of Western Australian bluethreadfin populations. By increasing sample sizes from previously investigated areas: Roebuck Bay (n = 93 adults) and Eighty-mile Beach (n = 92 adults and 163 recruits from two settlement cohorts), we were able to detect subtle genetic differentiation that was previously obscured by low levels of genetic polymorphism. Therefore, the same fine-scale stock structure that has been observed elsewhere in this species also appears to exist in Western Australia. This has clear ramifications for a revised management strategy that incorporates the fine scale structuring of northwest Western Australian stocks of the blue threadfin. |
| first_indexed | 2025-11-14T07:57:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-25563 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:57:35Z |
| publishDate | 2013 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-255632017-02-28T01:43:50Z Murky waters: Searching for structure in genetically depauperate blue threadfin populations of Western Australia Horne, J. Momigliano, P. Van Herwerden, L. Newman, Stephen Population genetics Recruitment cohorts Self-recruitment Polynemidae The blue threadfin (Eleutheronema tetradactylum) is an exploited fishery species in southeast Asia andAustralia. Demographic studies have revealed fine-scale stock structure throughout the Australian coastline, with demographically isolated populations separated by only tens of km. Similarly, populationgenetic analysis revealed fine-scale structure across most of its Australian range with important implications for fisheries management. However, in northern Western Australia, genetic stock structureanalysis showed a contradictory lack of structure. In the present study, one mtDNA marker and a suiteof five microsatellite loci were used to further investigate the stock structure of Western Australian bluethreadfin populations. By increasing sample sizes from previously investigated areas: Roebuck Bay (n = 93 adults) and Eighty-mile Beach (n = 92 adults and 163 recruits from two settlement cohorts), we were able to detect subtle genetic differentiation that was previously obscured by low levels of genetic polymorphism. Therefore, the same fine-scale stock structure that has been observed elsewhere in this species also appears to exist in Western Australia. This has clear ramifications for a revised management strategy that incorporates the fine scale structuring of northwest Western Australian stocks of the blue threadfin. 2013 Journal Article http://hdl.handle.net/20.500.11937/25563 http://www.sciencedirect.com/science/article/pii/S0165783613000817?via=ihub Elsevier BV restricted |
| spellingShingle | Population genetics Recruitment cohorts Self-recruitment Polynemidae Horne, J. Momigliano, P. Van Herwerden, L. Newman, Stephen Murky waters: Searching for structure in genetically depauperate blue threadfin populations of Western Australia |
| title | Murky waters: Searching for structure in genetically depauperate blue threadfin populations of Western Australia |
| title_full | Murky waters: Searching for structure in genetically depauperate blue threadfin populations of Western Australia |
| title_fullStr | Murky waters: Searching for structure in genetically depauperate blue threadfin populations of Western Australia |
| title_full_unstemmed | Murky waters: Searching for structure in genetically depauperate blue threadfin populations of Western Australia |
| title_short | Murky waters: Searching for structure in genetically depauperate blue threadfin populations of Western Australia |
| title_sort | murky waters: searching for structure in genetically depauperate blue threadfin populations of western australia |
| topic | Population genetics Recruitment cohorts Self-recruitment Polynemidae |
| url | http://www.sciencedirect.com/science/article/pii/S0165783613000817?via=ihub http://hdl.handle.net/20.500.11937/25563 |