Geographic pattern of genetic variation in modiolus capax (conrad, 1837) from the gulf of california
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Autónoma de Baja California
2000
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| _version_ | 1876453301497626624 |
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| author | Jorge de la Rosa Vélez |
| author_facet | Jorge de la Rosa Vélez |
| contents | Geographic pattern of genetic variation in modiolus capax (conrad, 1837) from the gulf of california Jorge de la Rosa Vélez Claudia Farfán Miguel A. Cervantes Franco Ciencias de la Tierra mytilids Modiolus capax allozyme variation genetic divergence The genetic variation of the two largest Modiolus capax (Conrad, 1837) populations that occur on thewest coast of the Gulf of California was studied by the allozyme analysis of eight polymorphisms oftwelve isozyme loci. Genetic variation was examined in about 200 mussels collected from three levels ofthe intertidal zone and from three sublittoral demes. Two loci (LAP* and GPI*) displayed particularlyhigh allelic diversity (18 and 19 alleles, respectively), many of which were rare (p < 0.1). Heterozygotedeficiency was a common feature across all loci, probably explained by the Wahlund effect. The geneticstructure of the population was analyzed using Wrights F-statistics, and its significance was assessed bypermutation and numerical resampling methods. There was a lower degree of genetic divergence amongintertidal levels (FST = 0.042) than among sublittoral demes (FST = 0.080), yet both values weresignificant. Comparisions between grouped genotype frequencies for each extreme locality (San Felipe vsLa Paz) revealed a low but significant level of genetic divergence (FST = 0.049), which suggests geneticflow over vast geographic distances (approximately 1100 km), but slight local genetic divergence due tophysical or biological factors acting over the larval dispersal and settlement. 2000 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48002603 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.4 Vol.26 |
| format | Artículo científico |
| id | redalyc_48002603 |
| institution | Redalyc |
| language | en |
| publishDate | 2000 |
| publisher | Universidad Autónoma de Baja California |
| spellingShingle | Geographic pattern of genetic variation in modiolus capax (conrad, 1837) from the gulf of california Jorge de la Rosa Vélez Ciencias de la Tierra mytilids Modiolus capax allozyme variation genetic divergence Geographic pattern of genetic variation in modiolus capax (conrad, 1837) from the gulf of california Jorge de la Rosa Vélez Claudia Farfán Miguel A. Cervantes Franco Ciencias de la Tierra mytilids Modiolus capax allozyme variation genetic divergence The genetic variation of the two largest Modiolus capax (Conrad, 1837) populations that occur on thewest coast of the Gulf of California was studied by the allozyme analysis of eight polymorphisms oftwelve isozyme loci. Genetic variation was examined in about 200 mussels collected from three levels ofthe intertidal zone and from three sublittoral demes. Two loci (LAP* and GPI*) displayed particularlyhigh allelic diversity (18 and 19 alleles, respectively), many of which were rare (p < 0.1). Heterozygotedeficiency was a common feature across all loci, probably explained by the Wahlund effect. The geneticstructure of the population was analyzed using Wrights F-statistics, and its significance was assessed bypermutation and numerical resampling methods. There was a lower degree of genetic divergence amongintertidal levels (FST = 0.042) than among sublittoral demes (FST = 0.080), yet both values weresignificant. Comparisions between grouped genotype frequencies for each extreme locality (San Felipe vsLa Paz) revealed a low but significant level of genetic divergence (FST = 0.049), which suggests geneticflow over vast geographic distances (approximately 1100 km), but slight local genetic divergence due tophysical or biological factors acting over the larval dispersal and settlement. 2000 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48002603 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.4 Vol.26 |
| title | Geographic pattern of genetic variation in modiolus capax (conrad, 1837) from the gulf of california |
| topic | Ciencias de la Tierra mytilids Modiolus capax allozyme variation genetic divergence |
| url | https://www.redalyc.org/articulo.oa?id=48002603 |