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RISS 인기검색어
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- 저자 : 최신석 ( Ho Bok Song (검색결과 2 건)
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최신석,송호복,황수옥 ( Shin Sok Choi,Ho Bok Song,Su Ok Hwang ) 한국하천호수학회 1997 생태와 환경 Vol.30 No.2
The fish fauna and the dynamics of fish community were investigated in the Daechong reservoir from May to October 1996. The collected fishes were classified into forty species of eight families. Of the them, dominant species was Lepomis macrochirus(relative abundance: 27.48%) and subdominant species was Carassius auratus (16.63%). Also, Zacco platypus (10.03%), Carassius cuvieri (6.27%) and Hemibarbus labeo (4.47%) were numerous. Korean endemic species were thirteen species (32.5%). The biomass of fishes were L. macrochirus (10.4 kg), C. auratus (10.3 kg) and C. cuvieri (4.1 kg). Dominant index, diversity index and evenness index were calculated 0.127, 1.126 and 0.703, respectively. Composition of age in superior species was stabled by the total length frequency distribution. In this study, the exotic fish was collected Cyprinus carpio nudus, C. cuvieri, L. macrochirus and Micropterus salmoides, and these relative abundance was 33.95%. In the view point of species composition, the fishes of still water has been increased and species diversity has been decreased after dam construction.
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금강모치 ( Moroco kumgangensis ) 의 난 발생과 자어의 성장
송호복,최신석 ( Ho Bok Song,Shin Sok Choi ) 한국하천호수학회 1997 생태와 환경 Vol.30 No.1
The mature adults of Moroco kumgangensis were collected from the upper South-Han river at Dong-myon, Chungsun-gun, Kangwon-do on April 1996 and fertilized eggs were reared to observe the developmental characters and the morphology of larvas at water temperature of 16±1℃. The eggs were globosity, yellowish brown, submergence and adhesive type and diameter of the eggs were 2.31±0.094 mm after absorption of water. Cleavage was progressed at intervals of an hour and five minutes after fertilization, and optic cup and somites (18∼22) were observed in sixty three hours. In ninety six hours, the number of heart beat was 40 times/min. and movement of embryos was active. Hatching began about five days after fertilization and the newly hatched larvae were 5.28±0.453 mm in total length and the number of heart beat was 44 times/min. Melanophore appeared within three days after hatching and the larvae were 11.05±0.389 mm in total length and reached the free swimming stage in ten days after hatching. In twenty five days, the number of heart beat was 162 times/min, dorsal, anal and caudal fin rays were 7, 7 and 25∼30 respectively and reached 11.92±0.275 mm in total length.
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