南方农业学报2018，Vol.49Issue(4)：800-805,6.DOI:10.3969/j.issn.2095-1191.2018.04.28
乌苏里拟鲿对水温环境的适应性
Water temperature adaptability of Pseudobagrus ussuriensis
摘要
Abstract
[Objective]The adaptability of Pseudobagrus ussuriensis to water temperature was clarified to provide re-ferences for its introduction and aquaculture in southern subtropical regions of China.[Method]The paper explored and analyzed the extreme temperature difference adaptability of P.ussuriensis,and studied the feeding intensity,breeding and blood parameters under different water temperature conditions.[Result]The tolerance range limit of P.ussuriensis mutated from high temperature changing to the low temperature was 8.0℃,and the tolerance limit range from low temperature to high temperature was 7.0℃.Its daily feeding rate were in parabolic relation with temperature,the corresponding equa-tion of linear regression was y=-0.0132 x2+0.6953x-5.0973(R2=0.7661).In the range of 11.8℃to 30.3℃,P.ussuriensis growth constant(GC)was between 0.1464 and 0.7620.It was basically not affected by high temperature.At the water tem-perature of 25.8℃,its oxytoic rate,fertilization rate,incubation rate and survival rate 30 d after hatching were the high-est,which were 73.4%,84.1%,82.6% and 75.7%. Therefore,the optimum water temperature for hatching was about 25.0℃. P.ussuriensis could maintain the integrity of its body tissues and organs and normal physiological function within 30.0℃.[Conclusion]The result shows that,P.ussuriensis has excellent adaptability to water temperature environment, especially for ±7.0℃water temperature difference.It can be introduced into the southern subtropical region of China to promote aquaculture.But if the intensity of temperature difference stress is too strong or the time is too long during the transportation and overwinter cultivation,its physiological adaptation mechanism may fail.Therefore,attention should be paid to the introduction of P.ussuriensis.关键词
乌苏里拟鲿/水温/适应性/生长常数(GC)/孵化效果/血液生化指标Key words
Pseudobagrus ussuriensis/water temperature/adaptability/growth constant(GC)/incubation effect/blood parameter分类
农业科技引用本文复制引用
陈子桂,何金钊,杨明伟,林岗,甘习军,马华威,冯鹏霏..乌苏里拟鲿对水温环境的适应性[J].南方农业学报,2018,49(4):800-805,6.基金项目
广西科学研究与技术开发计划项目(桂科AD17195016) （桂科AD17195016）
中央财政农业技术推广项目(桂渔牧科201326804) （桂渔牧科201326804）
