Mitochondrial diversity and genetic structure in allopatric populations of the Pacific red snapper Lutjanus peru
We analyzed the genetic diversity and structure of three allopatric populations of the Pacific red snapper Lutjanus peru (Nichols and Murphy, 1922) by means of restriction fragment length polymorphisms of the entire mitochondrial control region (1350 bp). We found high levels of haplotype (h = 0.96...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2003-03-01
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| Series: | Ciencias Marinas |
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| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/145 |
| _version_ | 1797279396993695744 |
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| author | A Rocha-Olivares JR Sandoval-Castillo |
| author_facet | A Rocha-Olivares JR Sandoval-Castillo |
| author_sort | A Rocha-Olivares |
| collection | DOAJ |
| description |
We analyzed the genetic diversity and structure of three allopatric populations of the Pacific red snapper Lutjanus peru (Nichols and Murphy, 1922) by means of restriction fragment length polymorphisms of the entire mitochondrial control region (1350 bp). We found high levels of haplotype (h = 0.966) and nucleotide (π = 3.23%) diversities among the 100 organisms analyzed from Baja California Sur, Sinaloa and Jalisco (Mexico). Most of the molecular variability was detected with only one of the five restriction enzymes used (MseI). Heterogeneity analysis of haplotype frequencies was not significant (χ2 = 125.1, P > 0.25); neither were Wright's fixation index (FST = 0.0062, P = 0.140) nor its molecular analogue (ΦST = 0.0194, P = 0.056). An analysis of molecular variance (AMOVA) confirmed the absence of differentiation between peninsular and continental populations, even though it produced a marginally significant ΦST (ΦST = 0.0116, P = 0.048). No phylogeographic pattern was detected in a Neighbor-Joining gene tree. We argue that high molecular diversity levels are consistent with a large population size and that the absence of an apparent genetic structure, in the extreme north of the species distribution, suggests the action of mechanisms favoring passive larval transport among allopatric populations; although active adult migration cannot be ruled out.
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| first_indexed | 2024-03-07T16:24:44Z |
| format | Article |
| id | doaj.art-80fd8d8930934856ac1250c608496dfe |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:24:44Z |
| publishDate | 2003-03-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-80fd8d8930934856ac1250c608496dfe2024-03-03T19:19:09ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532003-03-0129210.7773/cm.v29i2.145Mitochondrial diversity and genetic structure in allopatric populations of the Pacific red snapper Lutjanus peruA Rocha-Olivares0JR Sandoval-Castillo1Centro de Investigación Científica y de Educación Superior de EnsenadaCentro de Investigación Científica y de Educación Superior de Ensenada We analyzed the genetic diversity and structure of three allopatric populations of the Pacific red snapper Lutjanus peru (Nichols and Murphy, 1922) by means of restriction fragment length polymorphisms of the entire mitochondrial control region (1350 bp). We found high levels of haplotype (h = 0.966) and nucleotide (π = 3.23%) diversities among the 100 organisms analyzed from Baja California Sur, Sinaloa and Jalisco (Mexico). Most of the molecular variability was detected with only one of the five restriction enzymes used (MseI). Heterogeneity analysis of haplotype frequencies was not significant (χ2 = 125.1, P > 0.25); neither were Wright's fixation index (FST = 0.0062, P = 0.140) nor its molecular analogue (ΦST = 0.0194, P = 0.056). An analysis of molecular variance (AMOVA) confirmed the absence of differentiation between peninsular and continental populations, even though it produced a marginally significant ΦST (ΦST = 0.0116, P = 0.048). No phylogeographic pattern was detected in a Neighbor-Joining gene tree. We argue that high molecular diversity levels are consistent with a large population size and that the absence of an apparent genetic structure, in the extreme north of the species distribution, suggests the action of mechanisms favoring passive larval transport among allopatric populations; although active adult migration cannot be ruled out. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/145mitochondrial DNApopulation structurePacific red snappermolecular genetic diversityAMOVA |
| spellingShingle | A Rocha-Olivares JR Sandoval-Castillo Mitochondrial diversity and genetic structure in allopatric populations of the Pacific red snapper Lutjanus peru Ciencias Marinas mitochondrial DNA population structure Pacific red snapper molecular genetic diversity AMOVA |
| title | Mitochondrial diversity and genetic structure in allopatric populations of the Pacific red snapper Lutjanus peru |
| title_full | Mitochondrial diversity and genetic structure in allopatric populations of the Pacific red snapper Lutjanus peru |
| title_fullStr | Mitochondrial diversity and genetic structure in allopatric populations of the Pacific red snapper Lutjanus peru |
| title_full_unstemmed | Mitochondrial diversity and genetic structure in allopatric populations of the Pacific red snapper Lutjanus peru |
| title_short | Mitochondrial diversity and genetic structure in allopatric populations of the Pacific red snapper Lutjanus peru |
| title_sort | mitochondrial diversity and genetic structure in allopatric populations of the pacific red snapper lutjanus peru |
| topic | mitochondrial DNA population structure Pacific red snapper molecular genetic diversity AMOVA |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/145 |
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