EFFECTS OF SALINITY AND WATER TEMPERATURE ON THE SURVIVAL AND GROWTH OF BROWN‐SPOTTED GROUPER LARVAE (Epinephelus tauvina, SERRANIDAE)
EFFECTS OF SALINITY AND WATER TEMPERATURE ON THE SURVIVAL AND GROWTH OF BROWN‐SPOTTED GROUPER LARVAE (Epinephelus tauvina, SERRANIDAE)
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盐度和水温对褐斑石斑鱼幼虫（Epinephelus tauvina，Serranidae）生存和生长的影响
DOI：
10.1111/j.1749-7345.1983.tb00115.x
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
S. Teng
中科院分区：
文献类型：
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作者：
S. Akatsu;K. Al;S. Teng
在 39、25、25 至 39（以 4-5 ppt/周的速度增加）和 39 至 25 ppt（以 4-5 ppt/周的速度减少）下测试了盐度对金石斑鱼幼虫存活和生长的影响。在早期幼虫阶段（刚孵化到 21 天），在测试的盐度范围内，没有观察到存活和生长的显着差异。然而，对于后期的幼虫阶段（21-40 天），在 25 ppt 的恒定盐度下记录到显着更高的存活率和生长。还研究了新孵化幼虫的盐度耐受极限。在盐度为 0、4、8、12、16、24、32 和 40 ppt 的条件下测试的幼虫放养后，记录到 LH50（中位致死小时）的时间分别约为 14、51、153、144、131、118、103 和 82 小时。
在 39 ppt 盐度和 18、23、27、28、29 和 31°C 温度（对于新孵化至 12 天的幼虫）和 28、29 和 31°C（对于 19-33 天龄幼虫）的幼虫存活和生长进行测试。刚孵化到 12 天的幼虫的最佳存活和生长温度为 27–29°C，19–33 天的幼虫的最佳存活和生长温度为 30–31°C。
Effects of salinity on the survival and growth of Epinephelus tauvina larvae were tested at 39, 25, 25 to 39 (increasing at a rate of 4–5 ppt/week) and 39 to 25 ppt (decreasing at a rate of 4–5 ppt/week). NO significant differences in survival and growth were observed among the range of salinities tested during the early larval stages (newly-hatched to 21-day-old). However, for the later larval stages (21–40 day old), significantly higher survival and growth were recorded at a constant salinity of 25 ppt. Salinity tolerance limits of newly-hatched larvae were also investigated. Time to LH50 (median lethal hour) was recorded to be around 14, 51, 153, 144, 131, 118, 103 and 82 hours after stocking for larvae tested at salinities of 0, 4, 8, 12, 16, 24, 32 and 40 ppt, respectively.
Larval survival and growth were tested in 39 ppt salinity at temperatures of 18, 23, 27, 28, 29 and 31°C for newly-hatched to 12-day-old larvae and 28, 29 and 31°C for 19–33 day old larvae. Best survival and growth were recorded at 27–29°C for larvae between newly-hatched to 12-day-old and at 30–31°C for larvae of 19–33 days old.