전자저널 > 전자저널 > Effect of Water Temperature, Salinity and Food on Survival Rate and Growth of the Bladder Moon, Glossaulax didyma didyma (Gastropoda: Naticidae)

Effect of Water Temperature, Salinity and Food on Survival Rate and Growth of the Bladder Moon, Glossaulax didyma didyma (Gastropoda: Naticidae)

Kyu Hwang, Dong-Ki Ryu

Department of Marine Life Development, Kunsan National University, Gunsan 573-701, Korea

The survival and growth of Glossaulax didyma didyma (Roding) were measured in the laboratory under controlledconditions, such as water temperature, salinity and diet. The effect of temperature on G. didyma didyma wasexamined at four different levels (15, 20, 25 and 30℃) with 30 psu for 30 days. The results show that the growthand survival rates of G. didyma didyma were significantly higher at 15℃ and 20℃ than at other temperatures. Theeffect of salinity on G. didyma didyma was also examined at six different levels (10, 15, 20, 25, 30 and 35 psu) in20℃ for 40 days. The results showed that the growth and survival rates of G. didyma didyma were significantlyhigher at 30 psu and 35 psu than at other salinities. Finally, the effect of diets on G. didyma didyma was examinedwith three single-component diets (prawn, shellfish and fish) at 20℃ and 30 psu for 60 days. The results showedthat the growth and survival rates of G. didyma didyma fed on shellfish were significantly higher than those fed onprawn and fish.

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