摘要
在水温6,10,14,18和22℃条件下,研究饥饿0 d,10 d,20 d,30 d和40 d对体重（181.75±17.21）g,体长（7.84±0.44）cm红鳍东方（Takifugu rubripes）幼鱼生长和耗氧率的影响。结果显示,10-18℃时饥饿对红鳍东方幼鱼的存活无显著影响,经40 d饥饿,实验鱼的存活率为100%;而6℃和22℃时分别于饥饿32 d和36 d全部死亡。相同水温条件下,随饥饿时间增加,实验鱼的体重损失率增大,肥满度降低,而耗氧率下降。相同饥饿时间,随水温上升,体重损失率增大,肥满度下降,而耗氧率升高。同时,耗氧率昼夜节律显著,07：00和15：00时达到最高峰,而03：00时达到最低值。经方差分析表明,饥饿和水温对实验鱼体重损失率、肥满度和耗氧率的影响均存在显著差异（P〈0.05）。同时发现,饥饿10-20 d时,耗氧率明显降低,而20-40 d时趋于稳定,实验鱼耗氧率的降低随饥饿时间延长表现出一定的阶段性变化规律。
The effect of starvation on the growth and oxygen consumption rate of juvenile takifugu rubripes （181.75 ±17.21 g and 17.84 ±0.44 cm） starved for 0-40 d were studied under different temperatures（6 ℃, 10 ℃, 14 ℃, 18 ℃ and 22 ℃）. Results of the present study indicated that starvation for 0-40 d had no significant effect on the survival rate of takifugu rubripes at 10- 18 ℃, the survival rate being 100 % after starvation for 40 d. However, there were no fish surviving at 6 ℃ and 22 ℃ after 32 d and 36 d starvation, respectively. At the same temperature, the rate of weight loss decreased with the starvation time, while the opposite occurred for the oxygen consumption rate. Within the same period of starvation, the rate of weight loss increased with increasing temperature, and the same trend was found for the oxygen consumption rate. Meanwhile, the diel variation of oxygen consumption rate was obvious. At 07：00 and 15：00, the oxygen consumption rate was the highest while the lowest values were reached at 03：00. Starvation and temperature showed significant difference in their influence on the rate of weight loss, condition factor and oxygen consumption rate （P 〈 0.05）. The oxygen consumption rate obviously deceased after starvation for 10-20 d, then tended to be stable with starvation for 20 -40 d, indicating that the oxygen consumption rate of takifugu rubripes showed a staged variation during starvation.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第6期1203-1207,共5页
Periodical of Ocean University of China
基金
国家高技术研究发展计划项目(2006AA100303)
国家科技支撑计划课题(2006BAD09A15)资助
关键词
红鳍东方
饥饿
生长
肥满度
耗氧率
昼夜节律
Takifugu rubripes
starvation
growth
condition factor
oxygen consumption rate
diel rhythm
