Population genetic structure of Scombrops boops (Percoid, Scombropidae) around the Japanese archipelago inferred from the cytochrome b gene sequence in mitochondrial DNA |
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Authors: | Noguchi Shunsuke Itoi Shiro Takai Noriyuki Noda Tsutomu Myojin Toshihiko Yoshihara Kiyoshi Sugita Haruo |
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Institution: | Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, Japan. |
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Abstract: | 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. |
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