渔业研究2024，Vol.46Issue(2)：156-161,6.DOI:10.14012/j.cnki.fjsc.2024.02.006
黑斑原对急性高温耐受性的研究
Effects of high temperature stress on the lethality of fry and adult Glyptosternon maculatum
摘要
Abstract
In order to explore the tolerance of Glyptosternon maculatum to extreme temperatures at different stages,this study performed acute hyperthermic stress on the fry and adult fish,determined semi-lethal time at each temperature,and measured the respiratory rate of adult fish under hyperthermia.The results showed that the semi-lethal time(LT50)of fry G.maculatum shortened with the increase of temperature,and there was a significant difference in the LT50 of the different temperature groups(P＜0.05),among which LT50 was 13.53 h at 28℃and 71.20 h at 24℃.The respiratory rate of adult fish under high temperature stress in-creased significantly,and the semi-lethal time(LT50)of adult fish at 24℃was 15.6 h,which was much lower than that of fry at this temperature.The results showed that there were differences in heat tolerance at different growth stages,and attention should be paid to water temperature control during the breeding process.The short-term lethal temperature of fry was 28℃,and the short-term lethal temperature of adult fish was 24℃.The results of this study can provide basic data for healthy breeding and further study of high tempera-ture tolerance mechanism of G.maculatum.关键词
黑斑原/鱼苗/成鱼/急性高温胁迫/半致死时间Key words
Glyptosternon maculatum/fry/adult fish/acute hyperthermia stress/semi-lethal time分类
农业科技引用本文复制引用
曾荣俊,刘晓锐,耿庆宝,唐雪梅,方媛林,吴雷,张欢,顾正选,禹猛..黑斑原对急性高温耐受性的研究[J].渔业研究,2024,46(2):156-161,6.基金项目
华能西藏雅鲁藏布江水电开发投资有限公司科研项目(JC2020/P07) （JC2020/P07）
