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  1. No Access

    Article

    Susceptibility Test of Two Ca2+-ATPase Conformers to Denaturants and Polyols to Outline Their Structural Difference

    To determine the effect of denaturants [guanidine hydrochloride (GdnHCl) and urea] and polyols [with various molecular masses (62.1–600)] on calcium binding at the two hypothesized conformers (A and B forms) o...

    Aya Kotake, Genichi Tajima, Yuusuke Maruyama… in The Journal of Membrane Biology (2013)

  2. No Access

    Article

    Occurrence of estuarine and sea eels Anguilla japonica and a migrating silver eel Anguilla anguilla in the Tokyo Bay area, Japan

    Otolith microchemical analyses of the strontium (Sr) and calcium (Ca) concentrations in the eels Anguilla japonica and A. anguilla caught in Tokyo Bay were undertaken to reconstruct the eels’ migratory histories....

    Takaomi Arai, Naoko Chino, Aya Kotake in Fisheries Science (2009)

  3. No Access

    Article

    Decline in non-native freshwater eels in Japan: ecology and future perspectives

    The occurrence, distribution, and biological characteristics of non-native freshwater eels were analyzed using 5524 eels collected from 16 sites in Japan between 1997 and 2005. Three hundred seventy-four fishe...

    Akihiro Okamura, Huan Zhang, Naomi Mikawa, Aya Kotake… in Environmental Biology of Fishes (2008)

  4. No Access

    Article

    Migration of anadromous white-spotted charr Salvelinus leucomaenis, as determined by otolith strontium: calcium ratios

    The migratory history of anadromous white-spotted charr Salvelinus leucomaenis collected from japanese coastal waters, was examined in terms of strontium (Sr) and calcium (Ca) uptake in the otolith, by means of w...

    Takaomi Arai, Aya Kotake, Takefumi Kitamura in Fisheries Science (2005)

  5. No Access

    Article

    Evidence of downstream migration of Sakhalin taimen, Hucho perryi, as revealed by Sr : Ca ratios of otolith

    The migratory history of Sakhalin taimen, Hucho perryi, was examined in terms of strontium (Sr) and calcium (Ca) uptake in the otolith by using wavelength dispersive X-ray spectrometry on an electron microprobe. ...

    Takaomi Arai, Aya Kotake, Kentaro Morita in Ichthyological Research (2004)

  6. No Access

    Article

    Migratory history and habitat use by New Zealand freshwater eels Anguilla dieffenbachii and A. australis, as revealed by otolith microchemistry

     The migratory history of Anguilla dieffenbachii and A. australis, collected from a coastal lake of New Zealand, was examined using analysis of strontium (Sr) and calcium (Ca) concentrations. Line analysis of Sr ...

    Takaomi Arai, Aya Kotake, P. Mark Lokman, Katsumi Tsukamoto in Ichthyological Research (2003)

  7. No Access

    Article

    Occurrence of sea eels of Anguilla japonica along the Sanriku Coast of Japan

     The age and migratory history of the Japanese eel, Anguilla japonica, collected along the Sanriku Coast of Japan, were examined using otolith microstructure and analysis of strontium (Sr) and calcium (Ca) concen...

    Takaomi Arai, Aya Kotake, Madoka Ohji, Michael J. Miller… in Ichthyological Research (2003)

  8. No Access

    Article

    Identifying sea-run brown trout, Salmo trutta, using Sr :  Ca ratios of otolith

     The migratory history of the brown trout, Salmo trutta, collected from Japanese rivers, was examined in terms of strontium (Sr) and calcium (Ca) uptake in the otolith, by means of wavelength dispersive X-ray spe...

    Takaomi Arai, Aya Kotake, Tomoya Aoyama, Hirofumi Hayano… in Ichthyological Research (2002)