Genetic Diversity and Population Structure of Genypterus chilensis, a Commercial Benthic Marine Species of the South Pacific
作者： Valentina R. Córdova-Alarcón , Cristián Araneda , Felipe Jilberto , Piero Magnolfi , María Isabel Toledo
关键词: Range (biology) 、 Microsatellite 、 Fishery 、 Fishing 、 Genetic diversity 、 Species richness 、 Population 、 Aquaculture 、 Biology 、 Effective population size
摘要: The red cusk-eel (Genypterus chilensis, Guichenot 1848) is an iconic species in Chilean gastronomy, with a cultural significance that extends beyond its economic value, worthy of conservation. Despite the decline fishery productivity across most distribution range for this species, little effort has been devoted to assessing stock management. In present study, seven heterologous microsatellite loci (cmrGb3.8.1, cmrGb5.2B, cmrGb4.2A, cmrGb4.2B, cmrGb5.9, cmrGb4.11 and cmrGb2.6.1) were genotyped total 153 individuals from four locations central southern Chile (30.5oS–37.6oS), comprising ~1000 km coastline. Five consistently amplified low frequency null alleles (<2.5%). These markers showed high average heterozygosity (HO=0.886 HE=0.884) PIC (0.869). Significant genetic differentiation among (global FST=0.043, global DJost=0.252) suggested presence at least three different groups along coast, moderate levels admixture between two populations (0.168
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