Assessment of the population genetic structure of Sphyrna lewini to identify conservation units in the Mexican Pacific
Due to the current status of the scalloped hammerhead shark (Sphyrna lewini) as a threatened species, the assessment of genetic diversity, divergence, and demographic parameters of populations in the eastern Pacific Ocean may assist in developing appropriate strategies for sustainable fisheries and...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2012-12-01
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| Series: | Ciencias Marinas |
| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2110 |
| _version_ | 1797279530483712000 |
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| author | E Castillo-Olguín M Uribe-Alcocer P Díaz-Jaimes |
| author_facet | E Castillo-Olguín M Uribe-Alcocer P Díaz-Jaimes |
| author_sort | E Castillo-Olguín |
| collection | DOAJ |
| description |
Due to the current status of the scalloped hammerhead shark (Sphyrna lewini) as a threatened species, the assessment of genetic diversity, divergence, and demographic parameters of populations in the eastern Pacific Ocean may assist in developing appropriate strategies for sustainable fisheries and species conservation. We analyzed samples collected from 2001 to 2003 from seven locations in the Mexican Pacific Ocean and two in the southwestern Gulf of Mexico, using single-stranded conformation polymorphism of a mitochondrial control region fragment and five microsatellite loci. The mitochondrial data did not show population divergence among locations from the Mexican Pacific Ocean; however, the microsatellite data showed a divergent population in Baja California. Additional differences were also observed between the northern and central locations of the Mexican Pacific. The historical demography analysis revealed spatial expansion events, possibly related to glacial-interglacial cycles that occurred approximately 450,000 years ago. The divergence found should be considered in the formulation of fisheries management and conservation policies of the species in the region.
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| first_indexed | 2024-03-07T16:27:08Z |
| format | Article |
| id | doaj.art-eff48223025946098dcfe6ec62472bdc |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:27:08Z |
| publishDate | 2012-12-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-eff48223025946098dcfe6ec62472bdc2024-03-03T17:53:39ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532012-12-0138410.7773/cm.v38i4.2110Assessment of the population genetic structure of Sphyrna lewini to identify conservation units in the Mexican PacificE Castillo-Olguín0M Uribe-Alcocer1P Díaz-Jaimes2Universidad Nacional Autónoma de MéxicoUniversidad Nacional Autónoma de MéxicoUniversidad Nacional Autónoma de México Due to the current status of the scalloped hammerhead shark (Sphyrna lewini) as a threatened species, the assessment of genetic diversity, divergence, and demographic parameters of populations in the eastern Pacific Ocean may assist in developing appropriate strategies for sustainable fisheries and species conservation. We analyzed samples collected from 2001 to 2003 from seven locations in the Mexican Pacific Ocean and two in the southwestern Gulf of Mexico, using single-stranded conformation polymorphism of a mitochondrial control region fragment and five microsatellite loci. The mitochondrial data did not show population divergence among locations from the Mexican Pacific Ocean; however, the microsatellite data showed a divergent population in Baja California. Additional differences were also observed between the northern and central locations of the Mexican Pacific. The historical demography analysis revealed spatial expansion events, possibly related to glacial-interglacial cycles that occurred approximately 450,000 years ago. The divergence found should be considered in the formulation of fisheries management and conservation policies of the species in the region. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2110 |
| spellingShingle | E Castillo-Olguín M Uribe-Alcocer P Díaz-Jaimes Assessment of the population genetic structure of Sphyrna lewini to identify conservation units in the Mexican Pacific Ciencias Marinas |
| title | Assessment of the population genetic structure of Sphyrna lewini to identify conservation units in the Mexican Pacific |
| title_full | Assessment of the population genetic structure of Sphyrna lewini to identify conservation units in the Mexican Pacific |
| title_fullStr | Assessment of the population genetic structure of Sphyrna lewini to identify conservation units in the Mexican Pacific |
| title_full_unstemmed | Assessment of the population genetic structure of Sphyrna lewini to identify conservation units in the Mexican Pacific |
| title_short | Assessment of the population genetic structure of Sphyrna lewini to identify conservation units in the Mexican Pacific |
| title_sort | assessment of the population genetic structure of sphyrna lewini to identify conservation units in the mexican pacific |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2110 |
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