Reichow D, Smith M J
Simon Fraser University, Department of Molecular Biology & Biochemistry, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada.
Mol Ecol. 2001 May;10(5):1101-9. doi: 10.1046/j.1365-294x.2001.01257.x.
Information on the extent of genetic differentiation among populations of the squid Loligo opalescens is crucial for the conservation of this commercially utilized species. We analysed six highly variable microsatellite loci in 11 collections of L. opalescens from different locations and spawning seasons to estimate the relative influence of two major evolutionary forces, gene flow and genetic drift. Microsatellite allele frequency patterns suggest that gene flow prevents population differentiation in L. opalescens. Tests for genetic differentiation showed homogeneity of the samples with an overall FST/RST of 0.0028/-0.0013. Genetic uniformity among samples from different year classes indicates that allele frequency patterns in L. opalescens are relatively stable over time. However, a more complete and detailed picture of fine-scale allele frequency shifts in this species will require a systematic microsatellite analysis of local populations over consecutive spawning cycles.
关于太平洋褶柔鱼种群间遗传分化程度的信息对于保护这种商业利用物种至关重要。我们分析了来自不同地点和产卵季节的11个太平洋褶柔鱼样本中的6个高度可变微卫星位点，以估计基因流和遗传漂变这两种主要进化力量的相对影响。微卫星等位基因频率模式表明，基因流可防止太平洋褶柔鱼种群分化。遗传分化测试显示样本具有同质性，总体FST/RST为0.0028/-0.0013。不同年份样本间的遗传一致性表明，太平洋褶柔鱼的等位基因频率模式随时间相对稳定。然而，要更全面、详细地了解该物种精细尺度的等位基因频率变化，需要对连续产卵周期内的当地种群进行系统的微卫星分析。
