- 水生動物 (ISSN:24348643)
- vol.AA2020, pp.AA2020-8, 2020 (Released:2020-10-25)
Genetic diversity and population structure of the mudskipper, Periophthalmus modestus, were investigated using mitochondrial control region (D-loop) sequence analysis. Sixty-eight haplotypes were detected in 196 individuals collected at 19 localities [Seto Inland Sea (n=11), Pacific coast (n=4: Mie Prefecture, Ehime Prefecture, Kochi Prefecture and Chiba Prefecture), Japan Sea coast (n=1), Ariake Sea (n=1) and Okinawa Prefecture (n=2: Haneji flats and Sashiki flats)], and an average haplotype diversity of h=0.923 was obtained. Analysis of molecular variance (AMOVA) indicated that Edo R., Ibi R., Souzu R., Arita R., Kashima R., Haneji F., and Sashiki F. populations were isolated from Seto Inland Sea populations. No significant genetic differentiation was observed among Seto Inland Sea populations. These results suggest that the regional populations in Seto Inland Sea have a metapopulation structure.