Yang Jianmin, Li Qi, Kong Lingfeng, Zheng Xiaodong, Wang Rucai
Fisheries College, Ocean University of China, Qingdao, 266003, P.R. China.
Biochem Genet. 2008 Oct;46(9-10):539-48. doi: 10.1007/s10528-008-9168-4. Epub 2008 May 31.
The veined rapa whelk (Rapana venosa) is a valuable and important fishery resource in China. In order to provide guidelines for fisheries management, the genetics population structure was assessed using 10 polymorphic allozyme loci from seven populations of R. venosa across the species' range on the Chinese coast. The mean allele richness ranged from 1.65 to 2.13, and the mean heterozygosity ranged from 0.086 to 0.149. Significant genetic differentiation was present, and the theta value was 0.016 across all populations. The nMDS plot of pairwise theta values, UPGMA dendrogram, and AMOVA analysis were in good agreement and identified three geographic subdivision groups. We propose that the genetic structure may be due to larval dispersal barriers and localized adaptation or a combination thereof. The implications of these results for the management of R. venosa populations are discussed.
脉红螺（Rapana venosa）是中国一种重要的渔业资源。为了为渔业管理提供指导方针，利用来自中国沿海该物种分布范围内七个脉红螺种群的10个多态性等位酶位点评估了其遗传种群结构。平均等位基因丰富度在1.65至2.13之间，平均杂合度在0.086至0.149之间。存在显著的遗传分化，所有种群的θ值为0.016。成对θ值的nMDS图、UPGMA聚类图和AMOVA分析结果高度一致，确定了三个地理细分群体。我们认为遗传结构可能是由于幼体扩散障碍和局部适应性或两者兼而有之。讨论了这些结果对脉红螺种群管理的影响。
