几种生态因子对曼氏无针乌贼野生和养殖卵孵化的影响

比较了曼氏无针乌贼野生卵和养殖卵的区别，研究了不同温度、盐度、孵化密度、卵类型对野生和养殖曼氏无针乌贼孵化率和孵化时间的影响.结果表明：野生卵的质量较佳，养殖卵则以黑色小卵的质量为佳.野生卵的最佳孵化温度为27 ℃～29 ℃，最佳孵化盐度为24.5～32.0；孵化密度对野生卵孵化率的影响不显著.养殖卵在19 ℃～29 ℃下的孵化率为6.7%～30.0%，高于33 ℃和低于17 ℃均不能孵化；在盐度19.5～32.0范围内孵化率为18.3%～25.0%，盐度低于17.0不能孵化；充气情况下，孵化密度对养殖卵的孵化率影响不显著，而不充气情况下影响显著.

Effects of several ecological factors on the hatching of Sepiella maindroni wild and cultured eggs

This paper compared the differences between Sepiella maindroni wild and cultured eggs, and studied the effects of temperature, salinity, hatching density, and egg type on the hatching rate and hatching time of the eggs. Wild eggs had better quality than cultured eggs. Among cultured eggs, small and black eggs had the best quality. For wild eggs, the optimum hatching temperature was 27 ℃-29 ℃, and the optimum hatching salinity was 24.5-32.0. Hatching density had no significant effects on the hatching rate of wild eggs. For cultured eggs, their hatching rate was 6.7%-30.0% when the temperature was 19 ℃-29 ℃. No cultured eggs were hatched when the temperature was higher than 33 ℃ or lower than 17 ℃. When the salinity was 19.5-32.0, the hatching rate of cultured eggs was 18.3%-25.0%. No hatching was observed when the salinity was below 17.0. Hatching density had no significant effects on the hatching rate of cultured eggs when air was provided, but the hatching rate was significantly affected when no air was provided.