Toshiaki Yamamoto

J-GLOBAL         Last updated: Oct 12, 2018 at 19:37
Toshiaki Yamamoto
Nippon Veterinary and Life Science University
Faculty of Veterinary Science

Research Areas



Hierarchical genetic structure of native masu salmon populations in Hokkaido, Japan.
Shigeru Kitanishi, Toshiaki Yamamoto, Hirokazu Urabe, kazuhiro Shimoda
Environmental Biology of Fishes   101 699-710   2018   [Refereed]
Shigeru Kitanishi, Toshiaki Yamamoto, Tak Ikeda
Freshwater Biology   62(9) 1655-1664   2017   [Refereed]
Toshiaki Yamamoto, Noritaka Hirohashi, Eiji Fujiwara, Tatsuya Suzuki, Hatsuna Maruta, Hirotake Omiya, Shigeru Kitanishi
Ecology of Freshwater Fish   26 397-402   Jul 2017   [Refereed]
© 2016 John Wiley & Sons A/S. Published by John Wiley & Sons LtdIn Salmonidae, subordinate males are exposed to higher risks of sperm competition than dominant males and thus are expected to improve the sperm characteristics (sperm concentrations,...
Shigeru Kitanishi, Shigeru Kitanishi, Toshiaki Yamamoto, Hiromi Ishii, Yuko Yamaguchi, Toru Kobayashi
Ichthyological Research   64 111-115   Jan 2017   [Refereed]
© 2016, The Ichthyological Society of Japan.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-weste...
Shigeru Kitanishi, Shigeru Kitanishi, Takahiko Mukai, Toshiaki Yamamoto, Yasuhiko Tago, Masanori Oda
Nippon Suisan Gakkaishi (Japanese Edition)   83 400-402   Jan 2017   [Refereed]
T. Yamamoto, K. Suzuki, T. Endo, S. Kitanishi
Journal of Applied Ichthyology   32 1086-1092   Dec 2016   [Refereed]
© 2016 Blackwell Verlag GmbHTo estimate the migration timing, length, and location of females with the growth hormone pseudogene (GHp), trace element analyses were performed on the otoliths of 40 wild adult masu salmon, Oncorhynchus masou (12 male...
Toshiaki Yamamoto, Hiroo Tamatani, Junpei Tanaka, Gen Oshima, Serina Mura, Masaru Koyama
Journal of Mammalogy   97 128-134   Jan 2016   [Refereed]
© 2015 American Society of Mammalogists, bears, numerous associations between biotic and abiotic factors have been reported to correlate with the timing of den entry and emergence; however, an analysis showing which factors i...
Shigeru Kitanishi, Toshiaki Yamamoto
Journal of Freshwater Ecology   30 589-596   Oct 2015   [Refereed]
© 2015 Taylor & Francis. Debris flow has potentially pronounced effects on streams and fish populations. In August 2010, a severe flood, which was coupled with wide-ranging landslides and massive debris flows, occurred in the Atsuta River. In this...
Toshiaki Yamamoto, Hatsuna Maruta, Tatsuya Suzuki, Shigeru Kitanishi
Fisheries Science   81 815-820   Jul 2015   [Refereed]
© 2015, Japanese Society of Fisheries Science. Most comparative studies on the sperm traits (sperm concentration, swimming speed, and longevity) of salmonid fish involve males with alternative life histories (anadromous versus resident forms) that...
T. Yamamoto, S. Kitanishi
Journal of Fish Biology   88 746-750   Jan 2015   [Refereed]
© 2015 The Fisheries Society of the British Isles. The proportions of individual masu salmon Oncorhynchus masou whose genotypic and phenotypic sex differed were compared among juvenile and adult fish in three rivers, and genotypically male but phe...