Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico

Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico

 Allozymic variability was analyzed in adult oysters Crassostrea gigas from the 1999, 2000 and 2001 crops of San Quintín Bay, Baja California, Mexico, using starch gel electrophoresis. The analysis included 13 enzymatic systems that revealed 25 loci, of which 16 were monomorphic and 9 were...

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Autores principales: Correa, F, Collins, E, Oceguera, A, Cordero, B, Domínguez, D
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2004
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/118
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spelling oai:cienciasmarinas.com.mx:article-1182019-04-22T22:20:14Z Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico Variación alozímica del ostión japonés Crassostrea gigas en Bahía San Quintín, Baja California, México Correa, F Collins, E Oceguera, A Cordero, B Domínguez, D Crassostrea gigas oyster inbreeding allozymes Crassostrea gigas ostión endogamia alozimas  Allozymic variability was analyzed in adult oysters Crassostrea gigas from the 1999, 2000 and 2001 crops of San Quintín Bay, Baja California, Mexico, using starch gel electrophoresis. The analysis included 13 enzymatic systems that revealed 25 loci, of which 16 were monomorphic and 9 were polymorphic. The values of observed heterozygosis ranged from 0.01 to 0.04, while according to the literature, the value for wild oysters is approximately 0.20. The results indicate that there are no statistical differences in the allozymic variability among the annual populations analyzed; however, the χ2 test revealed that in the three years, the oyster populations did not present an equilibrium with regard to the Hardy-Weinberg theoretical model. The three populations showed a reduced genetic diversity due to inbreeding and the bottleneck effect. Se analizó la variabilidad alozímica de ostiones adultos de Crassostrea gigas procedentes de las cosechas de 1999, 2000 y 2001 de Bahía San Quintín, Baja California, México, empleando la electroforesis en gel de almidón. El análisis comprendió 13 sistemas enzimáticos que revelaron un total de 25 loci, de los cuales 16 fueron monomórficos y 9 polimórficos. Los valores de heterocigosis observada oscilaron desde 0.01 hasta 0.04, mientras que, de acuerdo con la literatura, los valores en ostiones silvestres son de aproximadamente 0.20. Los resultados indican que no existen diferencias estadísticas significativas en la variabilidad alozímica entre las poblaciones anuales analizadas. Sin embargo, la prueba de χ2 reveló que en los tres años, las poblaciones de ostión presentaron una desviación respecto al modelo teórico de Hardy-Weinberg. Se revela que las tres poblaciones presentaron una diversidad génica reducida debido a una deficiencia de heterocigosis la cual es explicada por el fenómeno de la endogamia y el efecto cuello de botella. Iniversidad Autónoma de Baja California 2004-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/118 10.7773/cm.v30i11.118 Ciencias Marinas; Vol. 30 No. 1A (2004); 89-97 Ciencias Marinas; Vol. 30 Núm. 1A (2004); 89-97 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/118/97
institution Ciencias Marinas
collection OJS
language eng
format Online
author Correa, F
Collins, E
Oceguera, A
Cordero, B
Domínguez, D
spellingShingle Correa, F
Collins, E
Oceguera, A
Cordero, B
Domínguez, D
Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico
author_facet Correa, F
Collins, E
Oceguera, A
Cordero, B
Domínguez, D
author_sort Correa, F
title Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico
title_short Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico
title_full Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico
title_fullStr Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico
title_full_unstemmed Allozymic variation in the Pacific oyster Crassostrea gigas from San Quintín Bay,Baja California, Mexico
title_sort allozymic variation in the pacific oyster crassostrea gigas from san quintín bay,baja california, mexico
description  Allozymic variability was analyzed in adult oysters Crassostrea gigas from the 1999, 2000 and 2001 crops of San Quintín Bay, Baja California, Mexico, using starch gel electrophoresis. The analysis included 13 enzymatic systems that revealed 25 loci, of which 16 were monomorphic and 9 were polymorphic. The values of observed heterozygosis ranged from 0.01 to 0.04, while according to the literature, the value for wild oysters is approximately 0.20. The results indicate that there are no statistical differences in the allozymic variability among the annual populations analyzed; however, the χ2 test revealed that in the three years, the oyster populations did not present an equilibrium with regard to the Hardy-Weinberg theoretical model. The three populations showed a reduced genetic diversity due to inbreeding and the bottleneck effect.
publisher Iniversidad Autónoma de Baja California
publishDate 2004
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/118
_version_ 1715723923880935424

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