温度骤变对不同规格小龙虾早春苗成活率的影响  

Effect of Sudden Temperature Change on Survival Rate of Early Spring Seedlings of Different Sizes of Crayfish Procambarus Clarkii

作　　者：宣富君[1] 常国亮[2] 鲍成满[1] 陈友明[3] 王华 张林杰 XUAN Fujun;CHANG Guoliang;BAO Chengman;CHEN Youming;WANG Hua;ZHANG Linjie(Wetland College,Jiangsu Key Laboratory for Bioresources of Saline Solis,Yancheng Teachers University,Yancheng,Jiangsu 224051,China;School of Life Science,Jiangsu Engineering Research Center for Breeding of Special Aquatic Organisms,Huaiyin Normal University,Huaian,Jiangsu 223300,China;Jiangsu Freshwater Fisheries Research Institute,Nanjing,Jiangsu 210017,China;Funing Hongman Agricultural Development Co.,Ltd.,Yancheng,Jiangsu 224422,China)

机构地区：[1]盐城师范学院湿地学院,江苏省盐土生物资源研究重点实验室,江苏盐城224051 [2]淮阴师范学院生命科学学院,江苏省特色水产繁育工程研究中心,江苏淮安223300 [3]江苏省淡水水产研究所,江苏南京210017 [4]阜宁宏满农业发展有限公司,江苏盐城224422

出　　处：《水产养殖》2022年第5期29-31,共3页Journal of Aquaculture

基　　金：江苏省科技厅省政策引导类计划-苏北科技专项(SZ-YC202041);盐城渔业高质量发展课题(YCSCYJ2021017)。

摘　　要：对不同规格小龙虾春季早苗应对温度骤降的能力进行了相关研究。结果表明,秋冬时节培育的小龙虾苗种对温度骤变(寒潮和倒春寒)具有一定的适应性。当水温变化超过5℃时,对个体存活率无显著影响;但当温度骤然降至0℃,水体表层出现浮冰时,呈现出苗种规格越大(≥2 g)、病死率越高的趋势。指出,水体加入一定量维生素C后,苗种的存活率得到显著提升。In this paper, the ability of early spring seedlings of crayfish with different sizes to cope with sudden temperature drop was studied. The results showed that the crayfish seedlings cultivated in autumn and winter had certain adaptability to sudden temperature changes(cold wave and late spring cold). When the water temperature changed above 5 ℃, the individual survival rate had no significant effect. However, when the temperature suddenly dropped to 0 ℃ and floating ice appeared on the surface of the water, the seedling size crayfish(≥2 g)had the higher mortality. When adding a certain amount of vitamin C(Vc) to the water, its survival rate was sig nificantly increased.

关 键 词：温度骤变 小龙虾 春季早苗 存活率 

分 类 号：S966.9[农业科学—水产养殖]