Effects of temperature on egg production and early life stages of the fountain darter
Effects of temperature on egg production and early life stages of the fountain darter
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DOI：
10.1577/1548-8659(1998)127
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发表时间：
1998-11-01
影响因子：
1.4
通讯作者：
Whiteside, BG
中科院分区：
文献类型：
--
作者：
Bonner, TH;Brandt, TM;Whiteside, BG
研究了水温对濒危泉镖鲈的产卵量、仔鱼存活率和幼鱼生长的影响。将成鱼暴露于14、17、20、23（对照）、25、27和29 ℃的水温下33 d。在14、17、20、23和25 ℃下饲养的鱼的产蛋量显著高于在27和29 ℃下饲养的鱼（P小于或等于0.05）。17、20和23 ℃下的孵化百分比显著高于14、25、27和29 ℃下的孵化百分比（P ≤ 0.05）。在14、17、20和23 ℃下的幼虫产量显著高于25、27和29 ℃下的产量（P小于或等于0.05）。估计低温和高温产生50%的死亡率的幼虫（24-72小时）在24小时内分别为3.8和31.9摄氏度。低存活率和控制生长的实质性变化阻止了有意义的评估温度对青少年生长的影响。
Studies were conducted to determine the effects of water temperature on egg and larval production, larval survival, and juvenile growth of the endangered fountain darter Etheostoma fonticola. Adult fish were exposed to water temperatures of 14, 17, 20, 23 (control), 25, 27, and 29 degrees C for 33 d. Egg production was significantly higher (P less than or equal to 0.05) for fish held at 14, 17, 20, 23, and 25 degrees C than for fish held at 27 and 29 degrees C. Percent hatch was significantly higher (P less than or equal to 0.05) at 17, 20, and 23 degrees C than at 14, 25, 27, and 29 degrees C. Larval production was significantly higher (P less than or equal to 0.05) at 14, 17, 20, and 23 degrees C than at 25, 27, and 29 degrees C. Estimated low and high temperatures to produce 50% mortality of larvae (24-72 h old) over a 24-h period were 3.8 and 31.9 degrees C, respectively. Low survival and substantial variation in growth of controls prevented a meaningful assessment of temperature effects on juvenile growth.