水温对幼鲵生长影响的初步研究

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研究了不同时间段泉水和河水对幼鲵(Andrias davidanus)生长的影响。结果显示:幼鲵在不同时间和不同地点增重存在差异。第二阶段幼鲵平均日增重极显著高于第一阶段(P<0.01)。1号点(泉水)幼鲵平均增重和日平均增重极显著高于2号点(河水)幼鲵(P<0.01);第一阶段1号点日平均水温极显著高于2号点(P<0.01),最低温度较河水高6.95℃,且1号点水温变化较小。结果表明,水温是影响幼鲵生长的重要因素之一。 The effects of spring water and river water on the growth of Andrias davidanus were studied. The results showed that there were differences in weight gain of young 鲵 at different times and locations. The average daily gain of juvenile in the second stage was significantly higher than that in the first stage (P <0.01). The average weight gain and daily average weight gain of young 鲵 in point 1 (spring water) were significantly higher than that in point 2 (P <0.01). The mean daily water temperature at day 1 was significantly higher than that of point 2 (P <0.01), the lowest temperature was 6.95 ℃ higher than that of river water, and the change of water temperature at No.1 was less. The results show that water temperature is one of the important factors that affect the growth of juveniles.
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