Noguchi Shunsuke, Itoi Shiro, Takai Noriyuki, Noda Tsutomu, Myojin Toshihiko, Yoshihara Kiyoshi, Sugita Haruo
Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, Japan.
Mitochondrial DNA. 2012 Jun;23(3):223-9. doi: 10.3109/19401736.2012.668897.
The gnomefish (Scombrops boops) is a member of the percoid family Scombropidae, which includes a single genus and three to four species worldwide. Since little is known about the ecology of this species, here, sequencing analysis of the cytochrome b gene (1141 bp) in mitochondrial DNA detected 101 haplotypes from 186 individuals of S. boops collected from waters at seven localities around the Japanese archipelago. A single haplotype (Sb2) was the most abundant in the combined populations of S. boops from various localities. Genetic population structure analyses revealed no significant differences among these populations (Fst = - 0.0313-0.0195; Φst = - 0.0505-0.0615) with high haplotype diversity and low nucleotide diversity. This suggests that S. boops around the Japanese archipelago constitutes a single population, and indicates that the genetic structure of this population may be influenced by larval and egg dispersal in association with warm currents.
侏儒鱼（Scombrops boops）是鲈形目侏儒鱼科的一员，该科在全球仅包含一个属和三到四个物种。由于对该物种的生态学了解甚少，在此，通过对线粒体DNA中细胞色素b基因（1141 bp）进行测序分析，从日本列岛周围七个地点水域采集的186条侏儒鱼个体中检测到了101个单倍型。在来自不同地点的侏儒鱼混合种群中，单一单倍型（Sb2）最为常见。遗传种群结构分析显示，这些种群之间没有显著差异（Fst = - 0.0313 - 0.0195；Φst = - 0.0505 - 0.0615），具有高单倍型多样性和低核苷酸多样性。这表明日本列岛周围的侏儒鱼构成一个单一的种群，并表明该种群的遗传结构可能受到与暖流相关的幼体和卵扩散的影响。
