多齿围沙蚕胚胎及游毛幼虫发育条件的研究

A study on the conditions of the embryonic and nectochaeta development of Perinereis nuntia Savigny

中文关键词: 多齿围沙蚕  胚胎  游毛幼虫  发育条件

英文关键词: Perinereis nuntia Savigny  Embryonic development  Nectochaeta  Development condition

中文摘要:

      通过控制不同温度、盐度条件及投喂不同的饵料，观察了多齿围沙蚕胚胎、3~8刚节阶段游毛幼虫的发育情况。结果表明，多齿围沙蚕胚胎发育的适宜温度为18~25℃，适宜盐度为25~32；3~8刚节阶段游毛幼虫发育的适宜温度为24~32℃，适宜盐度为20~35；4~8刚节阶段游毛幼虫对微细的饵料均可摄食，蛋黄和酵母组比单细胞藻类组生长速度快，但成活率较低。

英文摘要:

      This paper dealt with the embryonic and nectochaeta development of Perinereis nuntia Savigny under different conditions of temperature, salinity and diet. The results showed that: The ranges of suitable temperature and salinity for embryonic development were 18~25℃ and 25~32 respectively; The ranges of suitable temperature and salinity for nectochaeta growth were 24~32℃ and 20~35 respectively;Tenuous diet could be ingested, but the survival rate of larval feeding on microalgae was higher than that of larval feeding on egg york or yeast.