Circadian Changes in Serum Concentrations of Steroids in Japanese Char Salvelinus leucomaenis at the Stage of Final Maturation. - Yamada, Hideaki; Satoh, Ti-ichi; Ogoh, Masashi; Takaji, Keigo; Fujimoto, Yasufumi; Hakuba, Takeshi; Chiba, Hiroaki; Kambegawa, Akira; Iwata, Munehico (Zoological Science (VSP International Science Publishers), 2002)