Internal gametic association and external fertilization in the elkhorn sculpin, Alcichthys alcicornis (Munehara, H. Takano, K. Koya Y.) Copeia,
1989. 673-678. 1989
The little dragon sculpin Blepsias cirrhosus, another case of internal
gametic association and external fertilization (Munehara, H. Takano, K. Koya,
Y.) Jap. J. Ichthyol. 37. 391-394 1991
Effects of extracellular environments on the motility of spermatozoa in
several marine sculpins with internal gametic association (Koya, Y. Munehara, H.
Takano, K. et al.) Comp. Biochem. Physiol. 106 A. 25-29, 1993
Ultrastructural observations on sperm penetration in the egg of elkhorn
sculpin, Alcihthys alcicornis, showing internal gametic association
(Koya, Y. Takano, K. Takahashi, H.) Zool. Sci. 10. 93-101, 1993
Embryonic
growth during gestation of the viviparous eelpout, Zoarces elongatus
(Koya, K. Ikeuchi, T. Matsubara, T. et al.)Jap. J. Ichthyol. 41. 338-342,
1994
Efficient artificial fertilization method based on the ovulation
cycle in barfin flounder Verasper moseri (Koya, Y. Matsubara, T.
Nakagawa, T.) Fish. Sci. 60. 537-540, 1994
Formation of egg adhesive
material in masked greenling (Hexagrammos octogrammus) (Koya, Y.
Munehara, H. Takano, K) Jap. J. Ichthyol. 42. 45-52, 1995
Annual changes in fine structure of the inner epithelial lining of the ovary
of a marine sculpin, Alcichthys alcicornis (Teleostei: Scorpaeniformes),
with internal gametic association (Koya, Y. Takano, K. Takahashi, H.) J.
Morphol. 223. 85-97, 1995
Annual reproductive cycle and spawning
characteristics of the female kichiji rockfish, Sebastolobus macrochir
(Koya, Y. Hamatsu, T. Matsubara, T.) Fish. Sci. 61. 203-208, 1995
Annual
changes in serum vitellogenin concentrations in viviparous eelpout, Zoarces
elongatus (Koya, Y. Matsubara, T. Ikeuchi, T. et al.) Comp. Biochem.
Physiol. 118A. 1217-1223, 1997
Sperm storage and degradation in the ovary
of a marine copulating sculpin, Alcichthys alciornis (Teleostei:
Scorpaeniformes): Role of intercellular junctions between inner ovarian
epithelial cells (Koya, Y. Munehara, H. Takano, K.) J. Morphol. 233.
153-163
, 1997
Course of proteolytic cleavage in three classes of yolk
proteins during oocyte maturation in barfin flounder Verasper moseri, a
marine teleost spawning pelagic eggs (Matsubara, T. Koya, Y.) J. Exp. Zool. 278.
189-200, 1997
Extracellular environments for the initiation of external
fertilization and micropylar plug formation in a cottid species,
Hemitripterus villosus (Pallas) (Scorpaeniformes) with internal
insemination (Munehara, H. Koya, Y. Hayakawa, Y. et al.) J. Exp. Mar. Biol.
Ecol. 211. 279-289, 1997
岐阜県長良川支流伊自良川の魚類相. （古屋・中谷） 岐阜大学教育学部研究報告 （自然科学）, 22.7-11, 1997
Annual reproductive cycle based on histological changes in the ovary of the
female mosquitofish, Gambusia affinis, in central Japan (Koya, Y. Itazu,
T. Inoue, M.) Ichthyol. Res. 45. 241-248, 1998
河口堰下流部の底泥の性状、分布および堆積時期. （山内・粕谷・足立・古屋ら） 長良川河口堰が自然環境に与えた影響 （財団法人日本自然保護協会）,
85-92. 1999
長良川における底生動物の変化. （篭橋・山内・足立・古屋ら） 長良川河口堰が自然環境に与えた影響 （財団法人日本自然保護協会）, 85-92.
1999
長良川におけるアユ仔魚の流下状況. （古屋・山内・足立） 長良川河口堰が自然環境に与えた影響 （財団法人日本自然保護協会）, 109-116.
1999
長良川河口堰湛水域におけるヨシ原の変化. （山内・足立.古屋） 長良川河口堰が自然環境に与えた影響 （財団法人日本自然保護協会）, 141-146.
1999
Environmental regulation of annual reproductive cycle in the mosquitofish,
Gambusia affinis. (Koya, Y. Kamiya, E.) J. Exp. Zool. 286. 204-211, 2000
Dynamics of oocyte and embryonic development during ovarian cycle of the
viviparous mosquitofish, Gambusia affinis. (Koya, Y. Inoue, M. Maruse, T.
et al.) Fish. Sci. 66. 63-70, 2000
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