Population genetics of the pink snail Strombus gigas in the Yucatan Peninsula:Implications for its management and fishery
The genetic population structure of the pink snail Strombus gigas in the Yucatan Peninsula, Mexico, was determined by isozyme expression in polyacrylamide gels. Muscle samples of 50 organisms, captured at four sites of the Yucatan Peninsula, were used to characterize the genotypic expression as rev...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2005-03-01
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| Series: | Ciencias Marinas |
| Subjects: | |
| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/56 |
| _version_ | 1797279490507800576 |
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| author | Jorge A Tello-Cetina Luis A Rodríguez-Gil Faustino Rodríguez-Romero |
| author_facet | Jorge A Tello-Cetina Luis A Rodríguez-Gil Faustino Rodríguez-Romero |
| author_sort | Jorge A Tello-Cetina |
| collection | DOAJ |
| description |
The genetic population structure of the pink snail Strombus gigas in the Yucatan Peninsula, Mexico, was determined by isozyme expression in polyacrylamide gels. Muscle samples of 50 organisms, captured at four sites of the Yucatan Peninsula, were used to characterize the genotypic expression as revealed by the expression of 55 loci in 30 enzymatic systems. The TFPGA program was used to analyze genic frequency data. The following parameters were determined: descriptive statistics, F statistic, genetic distances, Hardy-Weinberg equilibrium, UPGMA and the number of migrants as indicator of gene flow. Heterozygosity values ranged from 0.3240 for OCTDH 2 to 0.0440 for FUM, with a mean value of 0.0366; Fis values ranged from 0.0835 for OCTDH 2 to 0.3600 for FUM, with a mean value of –0.0492; and Fst values ranged from 0.0082 for LAP 2 to 0.1967 for MDH 2, with a mean value of 0.1039, suggesting heterozygote deficiency. The number of migrants derived from the Slatkin equation is 2.156 per generation, which suggests a certain degree of variability among populations and corroborates the low values obtained for Nei´ s genetic distance, of 0.0053 for the node showing the separation of the population from Arrecife de Alacranes from the other populations. We conclude that the S. gigas populations studied here do not present genetic fragility for their subsistence.
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| first_indexed | 2024-03-07T16:26:06Z |
| format | Article |
| id | doaj.art-d5411f4bf76341a583502b0b22e0c52f |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:26:06Z |
| publishDate | 2005-03-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-d5411f4bf76341a583502b0b22e0c52f2024-03-03T18:35:17ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532005-03-0131210.7773/cm.v31i2.56Population genetics of the pink snail Strombus gigas in the Yucatan Peninsula:Implications for its management and fisheryJorge A Tello-Cetina0Luis A Rodríguez-Gil1Faustino Rodríguez-Romero2Instituto Tecnológico de MéridaInstituto Tecnológico de MéridaUniversidad Nacional Autónoma de México The genetic population structure of the pink snail Strombus gigas in the Yucatan Peninsula, Mexico, was determined by isozyme expression in polyacrylamide gels. Muscle samples of 50 organisms, captured at four sites of the Yucatan Peninsula, were used to characterize the genotypic expression as revealed by the expression of 55 loci in 30 enzymatic systems. The TFPGA program was used to analyze genic frequency data. The following parameters were determined: descriptive statistics, F statistic, genetic distances, Hardy-Weinberg equilibrium, UPGMA and the number of migrants as indicator of gene flow. Heterozygosity values ranged from 0.3240 for OCTDH 2 to 0.0440 for FUM, with a mean value of 0.0366; Fis values ranged from 0.0835 for OCTDH 2 to 0.3600 for FUM, with a mean value of –0.0492; and Fst values ranged from 0.0082 for LAP 2 to 0.1967 for MDH 2, with a mean value of 0.1039, suggesting heterozygote deficiency. The number of migrants derived from the Slatkin equation is 2.156 per generation, which suggests a certain degree of variability among populations and corroborates the low values obtained for Nei´ s genetic distance, of 0.0053 for the node showing the separation of the population from Arrecife de Alacranes from the other populations. We conclude that the S. gigas populations studied here do not present genetic fragility for their subsistence. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/56population geneticsisozymesStrombus gigas |
| spellingShingle | Jorge A Tello-Cetina Luis A Rodríguez-Gil Faustino Rodríguez-Romero Population genetics of the pink snail Strombus gigas in the Yucatan Peninsula:Implications for its management and fishery Ciencias Marinas population genetics isozymes Strombus gigas |
| title | Population genetics of the pink snail Strombus gigas in the Yucatan Peninsula:Implications for its management and fishery |
| title_full | Population genetics of the pink snail Strombus gigas in the Yucatan Peninsula:Implications for its management and fishery |
| title_fullStr | Population genetics of the pink snail Strombus gigas in the Yucatan Peninsula:Implications for its management and fishery |
| title_full_unstemmed | Population genetics of the pink snail Strombus gigas in the Yucatan Peninsula:Implications for its management and fishery |
| title_short | Population genetics of the pink snail Strombus gigas in the Yucatan Peninsula:Implications for its management and fishery |
| title_sort | population genetics of the pink snail strombus gigas in the yucatan peninsula implications for its management and fishery |
| topic | population genetics isozymes Strombus gigas |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/56 |
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