Abstract: A laboratory test was conducted to study the effects of different sea water temperature (17 grads) and salinity (19 grads) on the growth and survival
of juvenile Meretrix meretrix. The suitable and optimum sea water salinities for the survival of juvenile M. meretrix were 6.5-39.5 and 9.0-31.0, and those for the juvenile growth were 7.3-38.7 and 15.0-23.0, respectively. The suitable sea water temperature for the survival of the juveniles was 4.0 ℃-36.1 ℃; the suitable temperature for the growth was 7.0 ℃-35.4 ℃, more suitable temperature was 17 ℃-33.5 ℃, and the optimum growth t
emperature was 24 ℃-27 ℃. Juvenile M. meretrix had stronger adaptability to high sea water temperature and low sea water salinity.

Key words: Meretrix meretrix Linnaeus, juvenile, salinity, temperature, Coilia nasus, artificial diet, digestive enzymes, lipid metabolism, growth.