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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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The coastal regions of Yeosu, the South Sea of Korea, has occurred annually the red tide which is caused by potentially ichthyotoxic dinoflagellate C. polykrikoides, with a wide avenue for exchange with oceanic waters and freshwater runoff from Sumjin river. We attempted to examine the variability in response to vertical migration and concentration of extracted DNA/RNA of C. polykrikoides exposed to salinity-stratified waters. The experimental aquarium of the 60 liter was employed to culture C. polykrikoides. One aquarium was supplied with only sea water, the other was consisted of sea water and freshwater. Experiment was conducted for 5 days. In experimental column (mixture of freshwater and sea water), salinity was maintained to 20 at upper and approximately 30 at bottom during the period of this study. The fluctuation with related to dissolved oxygen and pH was similar pattern to both columns. Chlorophyll a was significantly higher value at upper than bottom. During 24 h, chlorphyll a on experimental column was extremely high on the top as soon as lighting, compared with control. With elapsed time, the gap between experimental and control columns was a little. In darkness, chlorophyll a was not significantly different between upper and bottom, most cells appeared to randomly distribute on column regardless of water layer. Fluctuation with related to concentration of extracted DNA and RNA based on ratio of absorbance of 260 and 280 ㎚ in experimental column was higher at final day or diel migration than control. These results implied that a large volume of freshwater could be associated with influence of concentration of DNA and RNA, in particular, rapid upward movement caused massive fish kills as soon as sunset.
목차
Abstract
재료 및 방법
결과 및 고찰
요약
감사의 글
참고문헌
참고문헌 (27)
참고문헌 신청
Ambler, J. W., J. E. Cloern and A. Hutchinson. 1985. Seasonal cycles of zooplankton from San Franciso Bay. Hydrobiol. 129, 177-197.
Bell, K. N. I. and J. A. Brown. 1995. Active salinity choice and enhanced swimming endurance in 0 to 8-d-old larvae of diadromous gobies, including Sicydium punctatum (Pisces), in Dominica, West Indies. Mar. Biol. 121, 409-417.
Cho, E. S., C. S. Kim, S. G. Lee and Y. K. Chung. 1999. Binding of alcian blue applied to harmful microalgae from Korean coastal waters. Bull. Nat'l Fish. Res. Dev. Inst. 55, 133-138.
Dortch, Q. and T. T. Packard. 1989. Differences in biomass structure between oligotrophic and eutrophic marine ecosystems. Deep Sea Res. 36, 223-240.
Eggersdorfer, B. and D. P. Hader. 1991. Phototaxis, gravitaxis and vertical migration in the marine dinoflagellate Prorocentrum micans. FEMS Micro. Ecol. 85, 319-326.
Bell, K. N. I. and J. A. Brown. 1995. Active salinity choice and enhanced swimming endurance in 0 to 8-d-old larvae of diadromous gobies, including Sicydium punctatum (Pisces), in Dominica, West Indies. Mar. Biol. 121, 409-417.
Cho, E. S., C. S. Kim, S. G. Lee and Y. K. Chung. 1999. Binding of alcian blue applied to harmful microalgae from Korean coastal waters. Bull. Nat'l Fish. Res. Dev. Inst. 55, 133-138.
Dortch, Q. and T. T. Packard. 1989. Differences in biomass structure between oligotrophic and eutrophic marine ecosystems. Deep Sea Res. 36, 223-240.
Eggersdorfer, B. and D. P. Hader. 1991. Phototaxis, gravitaxis and vertical migration in the marine dinoflagellate Prorocentrum micans. FEMS Micro. Ecol. 85, 319-326.
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UCI(KEPA) : I410-ECN-0101-2009-470-015375178