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해산패류의 계절별 표준대사에 미치는 승온 효과 -I. 순화온도의 영향-

Influence of Increased Temperature on the Standard Metabolism in the Marine Bivalves Acclimated to Seasonal Water Temperature -I. Effects of Acclimation Temperature

  • 김경선 (부경대학교 해양생물학과) ;
  • 진평 (부경대학교 해양생물학과)
  • Kim Kyoung Sun (Department of Marine Biology, Pukyong National University) ;
  • Chin Pyung (Department of Marine Biology, Pukyong National University)
  • 발행 : 2002.09.01

초록

본 연구는 계절적으로 다른 수온에 순화되어 있는 패류에 대한 승온 효과를 분별하고 특히 시기별로 성장이 다른데 따른 승온 효과를 판별하기 위해 수행하였다. 실험 동물은 남해안 산 참굴, Crassostna gigas, 바지락, Ruditapes philippinarum 및 진주담치, Mytilus edulis의 3종이었으며 각 계절별로 채집하여 순화되어 있는 계절 수온과 순화 온도보다 4, 7 및 $10^{\circ}C$와 3, 6 및$ 9^{\circ}C$로 승온시킨 실험 해수에서 표준산소소비량과 여수량을 측정하였다. 생활사로 보아 가을에 치패기에 있는 참굴은 $14^{\circ}C$ 순화 수온 이상의 수온상승은 오히려 생리적 저해를 주었고 순화 수온이 $7^{\circ}C$인 겨울에는$ 9^{\circ}C$의 승온도 효과적이었다. 그러나 성재에서 여름에 순화 수온 $24^{\circ}C$ 이상의 승온은 저해를 주었다. 봄에 치패기에 있는 바지락은 순화수온보다 $6^{\circ}C$의 승온도 효과가 현저하였으나 그 이상의 수온 상승은 오히려 저해를 주었고 가을과 겨울에는 순화수온보다 온도가 $9^{\circ}C$까지 승온되어도 현저히 효과적이었다. 그러나 여름에는 순화수온 $24^{\circ}C$ 이상의 승온은 현저한 저해영향을 주었다. 진주담치는 봄 치패기에 순화수온보다 $3^{\circ}C$ 승온은 매우 효과적이었으나 그 이상 수온 상승은 저해를 주었다. 여름과 가을의 순화수온보다 높은 수온상승은 영향이 경미하였으며, 겨울에는 승온되어도 별다른 승온 효과를 보이지 않았다. 이상으로 보아 온배수의 승온 효과는 패류의 생활사 중 겨울에는 매우 효과적이었으나 치패기에 있어서는 순화 수온 보다 다소 높은 수온 상승도 오히려 저해 영향을 줄 수 있는 것으로 나타났다.

Influence of increased temperature on the standard metabolism in three species of marine bivalves, Crassostrea gigas, Ruditapes philippinarum and Mytilus edulis, acclimated to seasonal water temperatures and collected from the south coast of Korea, were examined in the laboratory. The standard oxygen consumption and filtration rates in the 3 species were measured respectively at the experimental temperature, 4, 7 and 10$^{\circ}C$ or 3, 6 and 9$^{\circ}C$ higher than the mean seasonal water temperature. When the experimental temperatures were higher than the seasonal water temperature, the rates of C. gigas decreased in autumn and spring, and increased In winter, while there was thermal stress in summer. The rates of R. philippinarum increased in spring when the experimental temperatures were 3$^{\circ}C$ and 6$^{\circ}C$ higher than the seasonal water temperature, but the rates increased in autumn and winter when the experimental temperature was even 9$^{\circ}C$ higher than the seasonal water temperature. In summer. metabolic activities of R. philippinarum decreased significantly at temperature higher than acclimation temperature. The rates of M. edulis increased in spring when the experimental temperatures were 3$^{\circ}C$ higher than the seasonal water temperature but the rates were stressed by the increased temperature above 3$^{\circ}C$. In winter, increased temperature did not affect the metabolic activities of M. edulis. These results suggested that the standard metabolism of the three marine bivalves in summer was stressed by the increased temperature, whereas the metabolism was activated in winter.

키워드

참고문헌

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피인용 문헌

  1. 이상 고수온에 반응하는 이매패류 참굴(Crassostrea gigas)의 패각운동을 활용한 생물모니터링시스템 연구 vol.23, pp.1, 2017, https://doi.org/10.7837/kosomes.2017.23.1.091