| 摘要: |
| 研究了温度和盐度变化对大泷六线鱼(Hexagrammos otakii)幼鱼存活与生长的影响。结果表明,温度和盐度变化对大泷六线鱼4 月龄幼鱼存活与生长的影响显著(P<0.05), 4 月龄幼鱼存活与生长适宜水温为14～23℃, 最适水温为17～23℃, 在适温范围内幼鱼具有较高的存活率和生长率, 温度过高或过低均对其生长发育有抑制作用。在20℃±0.5℃时生长率达到峰值, 为20.89 mg/d。适宜盐度为15～40,最适盐度为25～35, 在盐度30 时生长率达到最大值17.1 mg/d。 |
| 关键词: 大泷六线鱼(Hexagrammos otakii) 温度 盐度 存活 生长 |
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| 基金项目:山东省渔业资源修复行动计划项目; 山东省科技发展计划资助项目(2011GHY11502) |
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| Effects of temperature and salinity on growth and survival rate of young Hexagrammos otakii |
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| Abstract: |
| In this paper, the effects of temperature and salinity on growth and survial rate of young Hexagrammos otakii were studied. The results showed that the temperature and salinity changes had a significant effect on the growth and survival rate of 4-month young H. otakii(P<0.05). The young H. otakii had a higher growth and survival rate under the proper temperature. Too high or too low temperature is not conducive to the growth and development of the young fish. The proper temperature range for 4-month young H. otakii is 14～23℃, the most suitable temperature range is 17～23℃, the growth rate reached the maximum (20.89 mg/d) at 20℃±0.5℃. The proper salinity range for young H. otakii is 15～40, the most suitable salinity range is 25～35, the growth rate reached the maximum (17.1 mg/d) at salinity 30. |
| Key words: Hexagrammos otakii temperature salinity survival growth |
