中文摘要：

为考查食性和摄食对鱼类运动和行为的影响及两者交互作用,以肉食性鱼类乌鳢（Channa argus）幼鱼和草食性鱼类鳊（Parabramis pekinensis）幼鱼为研究对象,在（25±1）℃的条件下分别测定了实验鱼的自发运动、快速启动能力和隐匿行为的相关指标。结果显示,乌鳢和鳊自发运动速度分别为（9.64±0.67）和（8.40±0.26）cm·s-1,用于运动的时间分别为（15.15±3.69）%和（13.39±3.50）%,均无显著差异;快速启动的最大线速度分别为（1.64±0.18）和（1.99±0.17）mm·ms-1,最大加速度分别为（0.21±0.03）和（0.31±0.03）mm·ms-2,鳊显著高于乌鳢（p〈0.05）;进入隐匿场所时间比分别为（2.81±0.91）%和（0.15±0.12）%,乌鳢显著高于鳊（p〈0.05）;摄食对乌鳢和鳊的自发运动水平和快速启动能力均无显著影响,仅导致乌鳢进入隐匿场所时间比显著下降（p〈0.05）。研究结果提示,乌鳢和鳊幼鱼均具有较低的自发运动水平、较高的快速启动能力和较低隐匿行为,这一方面与乌鳢幼鱼的捕食方式和生活环境相适应,另一方面也与鳊幼鱼的觅食和避敌方式有关。

英文摘要：

The aims of the present study were to investigate the effect of foraging mode and feeding and on movement and behavior and their interaction in fish species. To achieve our goals, the juveniles of carnivorous snakehead （Channa argus） and herbivorous Chinese bream （Parabrarnis pekinensis） were selected as experimental models and the spontaneous activity, fast-start movements and hidden behavior of fasting and digesting snakehead and Chinese bream were measured individually at （25± 1） ℃. The mean speed of spontaneous movements （V） were （9.64±0.67） and （8.40±0.26） cm · s-1 while the percent time spent moving （PTM） were （ 15.15 ±3.69） % and （13.39 ±3.50） % in juvenile snakehead and Chinese bream, respectively, which showed no significant difference between two species. The maximum linear swimming speed （Vmax） were （1.64±0.18） and （1.99±0.17） mm · ms-1 while the maximum acceleration speed （Amax） were （0.21±0.03） and （0.31±0.03） mm · ms-2 in juvenile snakehead and Chinese bream, respectively. Chinese bream showed significantly higher Vmax and Amax than those of snakehead （p〈0.05）. There was no sig- nificant difference in any measured variables related to spontaneous activity and the fast-start movement whereas digesting snakehead showed significantly lower value of the percent time spent in shelter than fasting snakehead （p〈0.05）. In conclusion, both species in the present study showed low level of spontaneous movement, high ability of fast-start movement and low using of the hidden be- havior, which may be a result of long term adaptation to their habitats environment, foraging modes and （or） anti-predator strate-gY.