멸종위기에 처한 한둑중개(Cottus hangiongensis)의 산란습성 및 초기생활사 = Spawning Behavior and Early Life History of Endangered Cottus hangiongensis

다국어 초록 (Multilingual Abstract)

Spawning behavior and early life history of the tuman river sculpin, Cottus hangiongensis were studied in the laboratory and in the field at Wangpi Stream, Gyeongsangbuk-do, Korea, from January to December,2007. The spawning ground was in the lower Wangpi Stream, which is a shallow region about 40 ㎝or less in depth. During the spawning period, from March to April, mature males made nest cavities under stone to which they led a gravid female. The male and female then turned upside down, and spawning and fertilization occurred onto the ceiling of the nest cavity. After spawning, the male chased the female from the nest and mated with several other females. Fertilized eggs were spherical in shape, demersal,adhesive, transparent and yellow in color, measuring 1.86 mm (1.79~1.93 mm) in diameter. A mean of 17(12~22) various-sized oil globules were counted in the yolk. Granular materials formed a mass in the yolk. Fertilized eggs hatched at 256 hrs, 10 minutes after the morula stage under water temperature of 15.0~18.0℃. Newly hatched larvae 9.34 mm (9.02~9.69 mm, n=10) in total length (TL) had a large yolk.
At 14 days after hatching, larvae 11.40 mm (11.07~11.72 mm, n=10) in TL transformed to the postlarval stage. At 41 days after hatching, postlarvae of 18.42 mm (17.31~18.62 mm, n=10) in TL had reached the juvenile stage. The result of this study indicate that Cottus hangiongensis has the spawning ground in the lower stream and the amphidromous life history which is the different from that of Cottus poecilopus.

참고문헌 (Reference)

1 백현민, "호산천에 서식하는 멸종위기종인 한둑중개 Cottus hangiongensis의 섭식생태" 한국어류학회 20 (20): 279-284, 2008

2 Mizuno N, "Two ecological types of the freshwater sculpin. Cottus pollux Gunther" 70 : 267-275, 1961

3 Blaxter JHS, "The Early Life History of Fish" Spring-Verlag 765-, 1974

4 Byeon HK, "Taxonomic and morphological characteristics in the juvenile Cottus(Cottidae) fishes from Korea" 7 : 128-134, 1995

5 Cho KS, "Studies on ecological and early embryonic development of Cottus poecilopterus at the Stream of Mt. Chiak" 26 : 27-35, 1993

6 Byeon HK, "Sexual dimorphism in a River Sculpin (Cottus poecilopus Heckel) in Korea" 8 : 14-21, 1996

7 Byeon HK, "Reproductive behavior of the Fluvial sculpin (Cottus poecilopus) in Korea" 28 : 191-198, 1995

8 Goto A, "Reproductive behavior and homing after downstream spawning migration in the river sculpin, Cottus hangiongensis" 34 : 48-496, 1988

9 Goto A, "Life history and distribution of a River Sculpin, Cottus hangiongensis" 31 : 10-21, 1981

10 Kim IS, "Illustrated Book of Korean Fishes" Kyo-Hak, Pub. Co. 615-, 2005

11 Berg LS, "Freshwater fishes of the U.S.S.R and adjacent countries" IPST Press 207-265, 1965

12 Kim IS, "Freshwater Fishes in Korea" Kyo-Hak, Pub. Co. 466-, 2002

13 Nelson JS, "Fishes of the world. 3rd ed" John Wiley and Sons, Inc 600-, 1994

14 Matsubara K, "Fish morphology and hierarchy (2nd ed.)" Ishizake-Shoten 1-790, 1605

15 Byeon HK, "Feeding habit of the River Sculpin, Cottus poecilpus from the Streams at Mt. Chiak, Korea" 7 : 160-170, 1995

16 Goto A, "Ecological and morphological studies on the freshwater sculpins in Hokkaido" Hokkaido Univ 1977

17 Goto A, "Ecological and morphological divergence of the freshwater sculpin, Cottus nozawae Snyder-I. Spawning behavior and process of the development in the post-hatching stage" 26 : 31-37, 1975

18 Yabe M, "Comparative osteology and myology of the superfamily Cottoidea (Pisces : Scorpaeniformes), and its phylogenetic classfication" 32 : 1-130, 1985

19 Berra TM, "An Atlas of distribution of freshwater fish families of the world" Univ. Nebraska Press 120-126, 1981