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Decline of genetic variability in a captive population of Pacific white shrimp Penaeus (Litopenaeus) vannamei using microsatellite and pedigree information Electron. J. Biotechnol.
Vela Avitúa,Sergio; Montaldo,Hugo H; Márquez Valdelamar,Laura; Campos Montes,Gabriel R; Castillo Juárez,Héctor.
Background: The objective of this study was to estimate the decline of genetic variability and the changes in effective population size in three shrimp populations. One was a wild population collected at several points in the Mexican Pacific Ocean. The other two populations were different generations (7 and 9) from a captive population selected for growth and survival. Microsatellite markers and pedigree were both used to assess genetic variability and effective population size. Results: Using 26 loci, both captive populations showed a decline in the expected heterozygosity (20%) and allelic diversity indices (48 to 91%) compared to the wild population (P < 0.05). The studied captive populations did not differ significantly from each other regarding...
Tipo: Journal article Palavras-chave: Effective population size; Genetic diversity; Heterozygosity; Microsatellites; Selection; Shrimp.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400009
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