水温对云斑尖塘鳢幼鱼摄食和生长的影响

该文主要研究了水温对云斑尖塘鳢幼鱼摄食和生长的影响。试验共设4个温度（23℃、26℃、29℃和32℃）处理组，每组设3个平行，试验周期45d。结果表明：随着水温的升高，云斑尖塘鳢幼鱼摄食率逐渐升高，32℃时最高；相对增重率、特定生长率和饲料转化效率则呈现先升高后下降的趋势，29℃时达到最大值。方差分析表明，29℃试验组的特定生长率和饲料利用效率均显著高于其他各组（p＜0.05）；23℃摄食率最低，与其他组差异显著（p＜0.05），另外3个温度组之间无显著性差异（p＞0.05）。本研究表明，水温对云斑尖塘鳢幼鱼的摄食和生长有显著性影响，水温在29℃时幼鱼的摄食状态最佳，生长最快。

Effects of Water Temperature on Feeding and Growth of Juvenile Oxyeleotris marmoratus Bleeker

Effects of water temperature on feeding and growth in juvenile Oxyeleotris marmoratus Bleeker were studied.The juveniles were reared at a temperature of 23℃,26℃,29℃ and 32℃ with triplica-tion for 45 days.The results show that with the temperature raising,feeding rate was increased and reached a maximum at 32℃,while weight gain rate,specific growth rate and feed efficiency were increased at first and then decreased and reached a maximum at 29℃.Analysis of variance shows that the specific growth rate and feed efficiency increased significantly at 29℃（p〈0.05）;the feeding rate was decreased signifi-cantly at 23℃（p〈0.05）;but the rests were not significantly different with each other（p〉0.05）.The find-ings indicate that the effects of water temperature on feeding and growth of juvenile Oxyeleotris marmora-tus Bleeker was significant,and the juveniles show the best feeding and growth at a temperature of 29.