水温变化对近海网箱养殖中许氏平鲉摄食及生长的影响

Effects of Water Temperature Change on Feeding and Growth of Sebastes schleqelii in Offshore Cage Culture

对南隍岛近海网箱6个月的水温监测和对3个重复网箱内许氏平鲉的日摄食量、摄食率、特定生长率、成活率等数据进行了分析。结果表明,许氏平鲉在水温15~20℃时摄食量大、生长速度快,水温>20℃或<15℃时摄食量、生长速度有所下降;当水温<10℃时摄食量和生长速度急速下降,水温<7℃后摄食量和生长速度极低;许氏平鲉在水温<24℃时有着较高的成活率,水温在<20℃成活率可达100%。

By the temperature monitoring of net cage in the south Huang island offshore area for 6 months and analyzing daily food intake,feeding rate,specific growth rate,survival rate and other data,it was found that Sebastes schleqelii had a high feeding rate and growth rate when the water temperature ranged from 15℃to 20℃.When the water temperature was above 20℃or below 15℃,the feeding rate and growth rate dropped down.When the water temperature was below 10℃,the feeding rate and growth rate dropped down sharply,and feeding rate and growth rate was extremely low when the water temperature was below 7℃.Sebastes schleqelii had a higher survival rate when the water temperature was below 24℃,and the survival rate could reach 100%when the water temperature was below 20℃.