Effect of ocean acidification on fertilization and early development of the pearl oyster Pinctada martensii Dunker
海洋酸化对马氏珠母贝受精及早期发育的影响

Effects of ocean acidification on fertilization and early development of Pinctada martensii were investigated at pH 8.1, 7.7 and 7.4 from July 1 to July 3 in 2010. The results indicated that CO2-driven ocean acidification had no significant effect on fertilization. The shell lengths and heights in the groups of pH 8.1, 7.7 and 7.4 increased gradually, and showed significant differences between the group of PH 8.1 and the other two groups. This indicated that ocean acidification influenced the growth of P. martensii. During the experiment, the survival rate and the rate of abnormal larvae showed no significant difference in the pH 8.1 group. The survival rates in the pH 7.7 and 7.4 group were significantly lower than that in the pH 8.1 group. The rate of abnormal larvae in the pH 7.4 group was significantly higher than those in the other two groups. The development of the larvae was influenced by ocean acidification. The study provided basic information for exploring the effect of ocean acidification on growth and development of pearl oyster.