Genetic structure of the devil stinger Inimicus japonicus inferred by microsatellite DNA markers
2015
Takagi, M. (Ehime University, Matsuyama, Ehime (Japan). South Ehime Fisheries Research Center, Tarumi Branch) | Matsuki, K. | Iwamoto, T. | Mito, T. | Umino, T. | Shimizu, T.
We surveyed the population genetic structure of a devil stinger (Inimicus japonicus) in northwestern Pacific coastal region using six microsatellite loci; our aim was to investigate or examine the genetic effects of stock enhancement. We collected wild specimens of the species from eight localities in Japan and one in South Korea. We also compared four wild cohorts with three cultured stocks tagged with otolith ALCs; all cohorts were from Okayama Prefecture. Allelic richness detected similar levels of diversity (7.5-9.5) between wild populations and cultured stocks. Similar levels of heterozygosity was detected (0.723-0.767) between wild populations and cultured stocks. AMOVA did not identify significant genetic differences between wild populations and cultured stocks. Genetic distances among wild populations in Japan were low (0.026-0.058). Genetic distance between wild and cultured stocks in Okayama Pref. were also low (0.029-0.076). Thus, stock enhancement of the devil stinger should maintain the number of effective parents at levels that at least exceed those in the current populations.
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