전자저널 > 전자저널 > Effect of Temperature on Induced Sexual Maturation of the Hard Clam, Meretrix petechiails (Lamarck) Broodstock

Effect of Temperature on Induced Sexual Maturation of the Hard Clam, Meretrix petechiails (Lamarck) Broodstock

Byoung-Hak Kim, Tae-Seok Moon, Ki-Yeol Park, Young-Guk Jin1 and Yun-Kyung Shin1

Shellfish Research Center, National Fisheries Research and Development Institute, Namhae, Gyeongsangnam-do 668-821, Korea 1South Sea Fisheries Research Institute, NFRDI, Yeosu 556-823, Korea

Artificial induction of maturation by heating of the Hard Clam, Meretrix petechiails (LAMARCK) broodstock was investigated from 25 May to 30 June in 2008. We experimented maturation by keeping the breeding water temperature at 20, 25 and 30℃ and as the natural water temperature and found the following results. In case of the female, maturation was the quickest in the experiment group of 30℃ and the maturation tended to be slower as the water temperature was lower. The similar trend was displayed among the male. At experiment completion, maturation induction rate was found to be the highest at 46.0% in the experiment group of 30℃ followed by 35.0% in the experiment group of 15℃, 18.0% in the experiment group of natural water temperature and 12.0% in the experiment group of 20℃. During the period of the experiment, the survival rate was of 90% or more in all groups.

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