1. 1) W. S. Hoar: The gonads and reproduction, in “The Physiology of Fishes” (ed. by M. E. Brown), Vol. 1, Academic Press, New York, 1957, pp. 287-321.
2. 2) A. S. Ginzburg: Fertilization in Fishes and the Problem of Polyspermy (Translated from Russian by Z. Blake), Publ. IsraelProgram for Scientific Transl. Ltd., Jerusalem, 1972, pp. 3-145.
3. 3) K. Takano: Morphological and Endocrine-Physiological Studies onthe Female Genital System of Some Teleost Fishes, doctoral thesis,Hokkaido University, Hokkaido, 1973, 129 p (in Japanese).
4. 4) R. Billard: Effects of coelomic and seminal fluids and various salinediluentson the fertilizing ability of spermatozoa in the rainbow trout,Salmo gairdneri. J. Reprod. Fert., 68, 77-84 (1983).
5. 5) H. Ohta, T. Matsubara, and I. Imada: Sperm motility of masu salmon,Oncorhynchus masou, in coelomic and artificial coelomic fluids.Suisanzoshoku, 37, 235-239 (1989).