Effects of Temperature and Salinity on Survival and Metabolism of the hard shelled mussel Mytilus coruscus, Bivalve: Mytilidae

홍합, Mytilus coruscus 치패의 생존과 대사에 미치는 수온 및 염분의 영향

  • Published : 2004.05.01

Abstract

Effects of temperature and salinity were investigated on physiological responses of Mytilus coruscus seedlings. Temperature tolerance and survival of M. coruscus, were examined at temperature 20, 25, 28, 30 and 35$^{\circ}C$ for 9 das. Survival of M. coruscus was 90% at temperature 2$0^{\circ}C$ and $25^{\circ}C$. LT$_{50}$ (lethal temperature) of 9 days was at 27.1$^{\circ}C$. The respiration and filtration rates of M. coruscus were increased with temperature up to $25^{\circ}C$, and decreased with temperature ranged from $25^{\circ}C$ to 3$0^{\circ}C$. LS$_{50}$ (lethal salinity, psu) of 9 days at 1$0^{\circ}C$, 15$^{\circ}C$ and $25^{\circ}C$ were 17.01 psu, 19.95 psu and 21.79 psu respectively. Salinity affected survival of M. coruscus with higher temperature. However the respiration and filtration rates were reduced with lower salinity.

인공종묘로 생산된 홍합, Mytilus coruscus 치패를 이용하여 수온과 염분의 변화에 따른 생리적 반응을 알아보았다. 홍합의 9일 동안의 반수치사 수온은 27.1$^{\circ}C$였으며, 산소 소비율과 여수율은 수온상승에 따라 증가한 후 수온 25∼3$0^{\circ}C$이상에서 감소하였다. 수온 1$0^{\circ}C$, 15$^{\circ}C$$25^{\circ}C$에서 각 수온별 9일 동안의 반수치사 염분은 각각 17.01 psu, 19.95 psu 및 21.79 psu 였으며, 수온이 높을수록 염분의 영향이 큰 것으로 나타났다.

Keywords

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