中文摘要：

为了考察温度驯化对鱼类热耐受及低氧耐受能力的影响,以高体鳑鲏（Rhodeus ocellatus）为对象,分别在15、20和25℃条件下驯化14 d,随后在不同驯化温度下测定其温度和低氧耐受指标。结果表明：高体鳑鲏的临界高温（CTmax）和致死高温（LTmax）随驯化温度的升高而上升,临界低温（CTmin）和致死低温（LTmin）随驯化温度的降低而下降,说明高体鳑鲏的热耐受性具有温度依赖性;高体鳑鲏在各驯化温度下的温度耐受幅分别为29.34、30.18和28.01℃;高体鳑鲏的低温驯化反应率在15～20℃和20～25℃的驯化温度范围分别为0.23和0.87,说明高体鳑鲏的低温耐受能力在高温段具有更高的温度敏感性;而高温驯化反应率在不同温度范围差别不大（0.40和0.44）;高体鳑鲏失去平衡氧压则随着驯化温度的升高而上升,表明温度上升降低了高体鳑鲏的低氧耐受能力。

英文摘要：

To investigate the effect of acclimation temperature on thermal and hypoxia tolerances,the relevant indicators were measured in juvenile rose bitterling（ Rhodeus ocellatus） after 14 days of acclimation at 15,20 or 25 ℃. The critical thermal maximum（ CTmax） and lethal thermal maximum（ LTmax） increased with the increase of acclimation temperature,while the critical thermal minimum（ CTmin） and lethal thermal minimum（ LTmin） decreased with the decrease of acclimation temperature,suggesting that the thermal tolerance of rose bitterling is highly temperature sensitive. The thermal tolerance amplitudes at 15,20 and 25 ℃ were 29. 34,30. 18 and 28. 01℃,respectively. The acclimation response ratio（ ARR） of CTmaxwas similar between different temperature ranges（ 0.40 for 15-20 ℃,and 0.44 for 20-25 ℃）,whereas the ARR of CTminwas relatively high in high temperature range（ 0.87） when compared to that of low temperature range（ 0.23）. This suggests that the cold tolerance of rose bitterling is more sensitive to the change of temperature at high temperature range. Furthermore,the increasing loss of equilibrium at high temperature suggested that the hypoxia tolerance decreased with the increase of acclimation temperature.