【作者】 廖永岩； 黄海涛； 李慧雯；

【Author】 Liao Yongyang,Huang Haitao,Li Huiwen (College of Fisheries,Guangdong Ocean University,Zhanjiang,524025)

【机构】 广东海洋大学；

【摘要】 在盐度20、pH 7.5-8.5条件下,把即将蜕壳的拟穴青蟹分别放入10℃、15℃、20℃、25℃、30℃、35℃、40℃、40℃的海水中,进行温度对拟穴青蟹蜕壳影响的实验。结果显示,温度对拟穴青蟹蜕壳后体宽、体长、体重的增加影响不明显(p>0.05);25℃-30℃为青蟹蜕壳的最适温度(蜕壳率达77.77%)(p<0.05),25℃-35℃为青蟹蜕壳的适宜温度,20℃-35℃为青蟹蜕壳的可行温度,15℃以下、40℃以上为不适宜青蟹蜕壳温度。25℃-35℃拟穴青蟹蜕壳前存活率高,15℃-35℃拟穴青蟹蜕壳前存活率较高。30℃-35℃蜕壳后青蟹存活率高,20℃-25℃蜕壳后青蟹存活率较低。30℃拟穴青蟹蜕壳所需时间最短,25℃-35℃拟穴青蟹蜕壳所需时间较短。25℃-35℃拟穴青蟹蜕壳后存活时间最长。实验说明,15℃-35℃青蟹能存活,20℃-35℃青蟹能蜕壳,25℃-35℃为青蟹蜕壳的适宜温度,30℃左右为青蟹蜕壳的最适温度。更多还原

【Abstract】 Under the conditions of salinity of 20‰,pH 7.5-8.5,we put Scylla paramamosain which were about to molting into seawater at seven temperatures(10℃,15℃20℃,25℃,30℃,35℃and 40℃) to identify the effects of temperature on the molting of Scylla paramamosain.The results showed as follow: The temperature had no obvious effect on the increase of carapace width,carapace length and weight (P>0.05).25℃-30℃was the best temperature range for the molting of Scylla paramamosain(p<0.05),and the molting rate could reach 77.77%.20℃-35℃was the feasible temperature range for molting(p<0.05).If the temperature below 15℃or above 40℃,Scylla paramamosain could not molt.For the Scylla paramamosain which have not molted,at the temperature range of 15℃-35℃,there were a high survival rate. For the Scylla paramamosain which have molted successfully,30℃-35℃was the suitable temperature range for Scylla paramamosain surviving,but 20℃-25℃was not good enough and with a low survival rate. When the temperature is 30℃,Scylla paramamosain needed the least time to finish the molting process,and Scylla paramamosain needed less time to molt at the temperature range of 25℃-35℃.Scylla paramamosain which have molted successfully could survive for the longest time at the temperature range of 25℃-35℃.As a whole,Scylla paramamosain could survive at the temperature range of 15℃-35℃,and could molt at the temperature range of 15℃-35℃,25℃-35℃was the suitable temperature range for Scylla paramamosain molting and 30℃was the optimum temperature.更多还原