Genetic comparison of cultured and wild populations of the clam Coelomactra antiquata (Spengler) in China using AFLP markers

作者：Kong Lingfeng; Li Qi^*

来源：Aquaculture, 2007, 271(1-4): 152-161.

DOI：10.1016/j.aquaculture.2007.06.007

• AFLP
• Coelomactra antiquata
• cultured populations
• genetic diversity

AFLP markers were used to investigate levels of genetic diversity within cultured populations of the clam Coelomactra antiquata and to compare them with the wild source populations. Seven pairs of primers generated 365 loci among 125 individuals in three cultured and three wild populations. High polymorphism at the AFLP markers was found within both cultured and wild C antiquata populations. Although not statistically significant, reductions in the expected heterozygosity and percentage of polymorphic loci were observed in the cultured populations (2.8% and 8.3% reduction, respectively), and higher frequency of private alleles within the wild populations compared to the cultured populations indicated that rare alleles in some loci were lost in the cultured populations. Significant genetic differentiation was observed between the cultured populations, and between the cultured and wild populations. Northern populations were genetically distinct from southern populations (F-ST=0.696-0.746). The results obtained in this study indicate that continued genetic monitoring of the cultured populations is warranted and the northern and southern populations of C. antiquata should be managed separately in hatchery practices for the preservation of genetic diversity in wild populations.

• 出版日期2007-10-3
• 单位中国海洋大学