ISSN : 1225-3480
Unexpected mass mortality has been one of the drawbacks in front of the stable production of Japanese scallop (Patinopecten yessoensis) onthe Gangwon coasts of the East Sea (Sea of Japan). The preliminary data from our routine observation revealed that the mortality appeared to be related to variation of water temperature in the farming site and the degree of the mortality was dependent on scallop strain.The present study performed to verify the preliminary findings exhibited that the mortality was closely related to daily temperature variation rather than monthly variation. Daily temperature variation was particularly damageable to the scallop during the temperature elevation period. Scallops from hatchery seeds (Chinese strain) were more tolerant against the temperature variation over those from wild seeds. The hatchery scallop gain of the temperature tolerance was probably due to their larval experience to higher temperature in the hatchery as well as their maternal genetic acclimation to upper temperature extreme of the Chinese environment which was recently found.
Abele, D., Heise, K., Pörtner, H.O. and Puntarulo, S. (2002) Temperature-dependence of mitochondrial function and production of reactive oxygen species in the intertidal mud clam Mya arenaria. J. Exp. Biol., 205: 1831–1841.
Alarcon, J.A., Magoulas, A., Georgakopoulos, T., Zouros, E. and Alvarez, M.C. (2004) Genetic comparison of wild and cultivated European populations of the gilthead sea bream (Sparus aurata). Aquaculture, 230: 65–80.
Chen, M., Yang, H., Delaporte, M. and Zhao, S. (2007) Immune condition of Chlamys farreri in response to acute temperature challenge. Aquaculture, 271: 479-487.
Gagnaire, B., Frouin, H., Moreau, K., Thomas-Guyon, H. and Renault, T. (2006) Effects of temperature and salinity on haemocyte activities of the pacific oyster, Crassostrea gigas (Thunberg). Fish Shellfish Immunol., 20: 536–547.
Hégaret, H., Gary, H.W. and S. (2003) Philippe, Flow cytometric analysis of haemocytes from eastern oysters, Crassostrea virginica, subjected to a sudden temperature elevation. II. Haemocyte functions: aggregation, viability, phagocytosis, and respiratory burs. J. Exp. Mar. Biol. Ecol., 293: 249–265.
Li, Q., Xua, K. and Yua, R. (2007) Genetic variation in Chinese hatchery populations of the Japanese scallop (Patinopecten yessoensis) inferred from microsatellite data. Aquaculture, 269: 211-219.
Monari, M., Matozzo, V., Foschi, J., Cattani, O., Serrazanetti, G.P. and Marin, M.G. (2007) Effects of high temperature on functional responses of haemocytes in the clam Chamelea gallina. Fish Shellfish Immunol., 22: 1–17.
NFRDI Report. 2006. 2006년 수산시험연구최종평가자료(수산생명과학: 양식과학). 국립수산과학원. pp. 105-155.
Paillard, C., Allam, B. and Oubella, R. (2004) Effect of temperature on defence parameters in Manila clam Ruditapes philippinarum challenged with Vibrio tapetis. Dis. Aquat. Org., 59: 249–262.
