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- Title
Analyses of age and population genetic structure of the broadbanded thornyhead Sebastolobus macrochir in North Japan suggest its broad dispersion and migration before settlement.
- Authors
Sakaguchi, Sakiko; Takishita, Kiyotaka; Tsuchida, Shinji; Kitazato, Hiroshi; Fujikura, Katsunori; Goto, Tomoaki; Shibata, Haruka; Kojima, Shigeaki
- Abstract
Body size, age, and population genetic structure of the broadbanded thornyhead Sebastolobus macrochir inhabiting areas off the Pacific coast of Tohoku and off Abashiri, the Sea of Okhotsk, Japan, were analyzed. On the basis of significant differences in body size (growth) between certain year classes at Tohoku and Abashiri, it appears that S. macrochir does not migrate extensively after settlement and subsists on food within the settled environment. Meanwhile, no genetic isolation was observed between the populations at these two sites. Thus, it is highly likely that its pelagic egg balloons, larvae, and juveniles widely disperse and migrate before settlement.
- Subjects
SEA of Okhotsk; THORNYHEADS; FISH population genetics; FISH age; SIZE of fishes; OTOLITHS; FISH migration
- Publication
Journal of Oceanography, 2014, Vol 70, Issue 5, p457
- ISSN
0916-8370
- Publication type
Article
- DOI
10.1007/s10872-014-0240-x