不同低温条件下吉富罗非鱼的耐受性研究

广西师范大学学报（自然科学版） ›› 2012, Vol. 30 ›› Issue (1): 105-110.

不同低温条件下吉富罗非鱼的耐受性研究

唐章生¹, 卢其西^1,2, 林勇¹, 宾石玉^1,2, 彭婷³, 钟舒红³, 甘西¹

1.广西水产研究所广西水产遗传育种与健康养殖重点实验室,广西南宁530021;
2.广西师范大学生命科学学院,广西桂林541004;
3.广西大学动物科学与技术学院,广西南宁530004

收稿日期:2011-09-22 出版日期:2012-01-20 发布日期:2018-12-03
通讯作者: 林勇(1969—),男,广西玉林人,广西水产研究所高级工程师。E-mail:linnn2005@126.com
基金资助:
国家现代农业产业体系广西罗非鱼创新团队专项基金资助项目;广西科学研究与技术开发计划项目(桂科攻0992013-8;桂科攻10100007-1;桂科转1123013-1);广西自然科学基金(0832010Z);广西区直属公益性科研院所专项资金项目(2060302GXIF-2010-03;2060302GXIF-2011-05);广西水产畜牧兽医局科研专项(桂渔牧财[2010]58号);广西重点实验室开放课题基金资助项目(GXKL-AQUA-2011-01)

Tolerance of GIFT Tilapia (Oreochromis niloticus) under DifferentLow Temperature Stress

TANG Zhang-sheng¹, LU Qi-xi^1,2, LIN Yong¹, BIN Shi-yu^1,2, PENG Ting³, ZHONG Shu-hong³, GAN Xi¹

1.Guangxi Research Institute of Fisheries,Guangxi Key Laboratory of Aquatic Genetic Breeding and HealthyAquaculture,Nanning Guangxi 530002,China;
2.College of Life Science,GuangxiNormal University,Guilin Guangxi541004,China;
3.College of Animal Science and Technology,Guangxi University,Nanning Guangxi 530021,China

Received:2011-09-22 Online:2012-01-20 Published:2018-12-03

摘要/Abstract

摘要： 应用室内人工降温,以0.5 °C/2 h的降温方法研究吉富罗非鱼的低温耐受能力,分析比较不同低温条件下吉富罗非鱼的昏迷情况和死亡情况,评价其低温耐受性。结果表明:在8、9、10和11 °C持续低温胁迫下,吉富罗非鱼的昏迷温度在8.9～10.5 °C,半数昏迷温度为9.6 °C左右;从开始出现昏迷到全部死亡的经历时间分别为14.5、18.5、24.5和28.5 h;昏迷维持时间与累计死亡率呈显著的线性相关,分别为:y=-0.048 9x²+1.433 0x-9.507 8(R²=0.999 9)、y=-0.013 6x²+0.502 4x-3.638 5(R²=0.964 9)、y=0.003 8x²-0.046 1x-0.134 4(R²=0.984 3)和y=-0.003 4x²+0.244 3x-3.213 1(R²=0.994 5)。吉富罗非鱼的耐受性与时间和温度密切相关,其中8 °C组耐受时间最短,11 °C组最长。

关键词: 吉富罗非鱼, 低温胁迫, 昏迷维持时间, 死亡率, 耐受性

Abstract: The study was done to assess low-temperature tolerance of GIFT tilapia.In the condition of indoor artificial cooling,with 0.5 °C/2h cooling down to different low temperature point,the coma and death situation are compared to evaluate their low-temperature tolerance.The results showed thatcoma temperature ranged from 8.9 °C to 10.5 °C,the semi-lethal duration thetemperature of half coma of GIFT tilapia was about 9.6 °C.The time of GIFT tilapia from the beginning coma to dead was 14.5,18.5,24.5 and 28.5 h under lowtemperatures of 8,9,10 and 11 °C,respectively.The significant linear regressionbetween the coma duration and the cumulative mortality of GIFT tilapia was y=-0.048 9x²+1.433 0x-9.507 8(R²=0.999 9),y=-0.013 6x²+0.502 4x-3.638 5(R²=0.964 9),y=0.003 8x²-0.046 1x-0.134 4(R²=0.984 3),y=-0.003 4x²+0.244 3x-3.213 1(R²=0.994 5) at 8,9,10 and 11 °C,respectively.GIFT tilapia low-temperature tolerance was closely related with coma duration and temperature,and8 °C group tolerated the shortest,11 °C group the longest.

Key words: GIFT tilapia (Oreochromis niloticus), low temperature stress, coma duration, mortality, tolerance

中图分类号:

S917.4

唐章生, 卢其西, 林勇, 宾石玉, 彭婷, 钟舒红, 甘西. 不同低温条件下吉富罗非鱼的耐受性研究[J]. 广西师范大学学报（自然科学版）, 2012, 30(1): 105-110.

TANG Zhang-sheng, LU Qi-xi, LIN Yong, BIN Shi-yu, PENG Ting, ZHONG Shu-hong, GAN Xi. Tolerance of GIFT Tilapia (Oreochromis niloticus) under DifferentLow Temperature Stress[J]. Journal of Guangxi Normal University(Natural Science Edition), 2012, 30(1): 105-110.

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