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- Title
Dispersal patterns of anadromous and freshwater resident masu salmon at different spatial scales in mid-western Hokkaido, Japan.
- Authors
Kitanishi, Shigeru; Yamamoto, Toshiaki; Ishii, Hiromi; Yamaguchi, Yuko; Kobayashi, Toru
- Abstract
To evaluate the influences of spatial scale on dispersal, the dispersal patterns of masu salmon Oncorhynchus masou masou were investigated at among-river (ca. <43 km) and within-river levels in mid-western Hokkaido, Japan. A genetic differentiation ( F ) and assignment test showed that among-river dispersal was much less common (2.9 % of 339 individuals) than within-river dispersal (7.4 % of 190 individuals). We also found that there was no bias in dispersal at the among-river level, while anadromous males were more likely to disperse at the within-river level, suggesting that the dispersal patterns may be scale dependent.
- Subjects
JAPAN; ANIMAL dispersal; ANADROMOUS fishes; ONCORHYNCHUS masou; SPATIAL behavior in animals; FISH genetics; FISHES
- Publication
Ichthyological Research, 2017, Vol 64, Issue 1, p111
- ISSN
1341-8998
- Publication type
Article
- DOI
10.1007/s10228-016-0525-8