| 水温对东星斑幼鱼存活、摄食及生长的影响 |
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| 引用本文： | 孙志景,江曙光,于燕光,张振奎,夏苏东.水温对东星斑幼鱼存活、摄食及生长的影响[J].河北渔业,2013(5):1-4,12. |
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| 作者姓名： | 孙志景 江曙光 于燕光 张振奎 夏苏东 |
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| 作者单位： | 天津市水产研究所;天津市水产技术推广站 |
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| 摘 要： | 在实验室条件下,初步研究了水温对东星斑幼鱼摄食、生长及存活的影响。温度设5个水平(15、20、25、30、35℃),东星斑幼鱼在玻璃蓄养槽内养殖40d。结果显示20℃组、25℃组和30℃组的鱼没有死亡,35℃组的存活率为88.9%,15℃组的存活率仅为50%;总摄食量在30℃组最高,15℃组最低;特定生长率在30℃组最高,15℃组、35℃组为负值;在可以生长的组别里,30℃组饵料系数最小。本研究表明,水温对东星斑幼鱼生长发育的影响明显,东星斑的适宜摄食温度为20～30℃,最佳摄食温度为25～30℃;水温<20℃东星斑幼鱼不能正常摄食、生长,甚至会死亡,水温15℃时,几乎不摄食;水温>30℃,东星斑幼鱼可以正常摄食,但是不能正常生长,甚至会死亡。
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| 关 键 词： | 东星斑 水温 摄食 生长 存活 |
Effects of temperature on the feeding,growth and survival of the juvenile Plectropomus leopardus |
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| SUN Zhi-jing,JIANG Shu-guang,YU Yan-guang,ZHANG Zhen-kui,XIA Su-dong.Effects of temperature on the feeding,growth and survival of the juvenile Plectropomus leopardus[J].Hebei Fisheries,2013(5):1-4,12. |
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| Authors: | SUN Zhi-jing JIANG Shu-guang YU Yan-guang ZHANG Zhen-kui XIA Su-dong |
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| Institution: | 1(1.Tianjin Fisheries Research Institute,Tianjin 300221;2.Tianjin City Fisheries Technology Extension Station,Tianjin 300221) |
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| Abstract: | In this paper,the effect of temperature on feeding,growth and survival of the juvenile Plectropomus leopardus under laboratory conditions was studied.The temperature was set to 15,20,25,30 and 35 ℃.After 40d cultivation,the results showed that no deaths was found at 20 ℃,25 ℃ and 30 ℃ group.However,the survival rate was 88.9% at the 35 ℃group,and only 50% at the 15 ℃ group.The highest total food intake of Plectropomus leopardus was found at 30 ℃ group and the lowest one was found at 15 ℃ group.The highest Specific growth rate was found at the 30 ℃ group,and it was negative when the temperature was 15 ℃ and 35 ℃.The feed coefficient of juvenile Plectropomus leopardus was the lowest at 30 ℃ when compared to other groups.In addition,this studyshowed that water temperature could significantly affect the growth and development of juvenile Plectropomus leopardus lacepede;the suitable feeding temperature for juvenile Plectropomus leopardus is 20~30 ℃,the optimum feeding temperature is 25~30 ℃;the juvenile could not ingestion or living in normal when the water temperature less than 20 ℃ or more than 30 ℃. |
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| Keywords: | Plectropomus leopardus temperature ingestion grouth survival |
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