Grice Marine Laboratory, College of Charleston, 205 Fort Johnson Road, Charleston, SC 29412-9110, U.S.A.
J Fish Biol. 2011 Feb;78(2):466-78. doi: 10.1111/j.1095-8649.2010.02857.x. Epub 2011 Jan 7.
Mitochondrial control region sequences of 141 alfonsino Beryx decadactylus sampled off the coast of South Carolina were compared with 164 sequences from B. decadactylus collected in the Azores for inferring population structure and demographic history of this deep-water teleost in the North Atlantic Ocean. Analysis of molecular variance showed that 100% of the genetic variation was found within populations, indicating an absence of population structure (Φ(ST) = -0· 003). Neutrality tests and mismatch distribution analyses of pooled sequences suggested that B. decadactylus in the North Atlantic Ocean have undergone population expansion. These results may indicate that transatlantic gene flow occurs, possibly through passive drift of larvae or adult migration. The potential of a shared stock between the eastern and western North Atlantic Ocean will need to be considered if a directed fishery for B. decadactylus were to develop in the U.S.A.
对在南卡罗来纳州沿海地区采集的 141 条长鳍金枪鱼（Beryx decadactylus）的线粒体控制区序列与在亚速尔群岛采集的 164 条长鳍金枪鱼的序列进行了比较，以推断北大西洋这种深海鱼类的种群结构和种群历史。分子方差分析表明，100%的遗传变异存在于种群内部，表明不存在种群结构（Φ(ST) = -0· 003）。对合并序列进行中性检验和错配分布分析表明，北大西洋的长鳍金枪鱼经历了种群扩张。这些结果可能表明存在跨大西洋的基因流动，可能是通过幼虫的被动漂移或成年鱼的迁徙。如果在美国开发针对长鳍金枪鱼的定向渔业，需要考虑东、西大西洋之间是否存在共同的种群。
