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《Oceanologia et Limnologia Sinica》 2016-01
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IMPACT OF WATER TEMPERATURE ON PAA SPINOSA TADPOLE BEHAVIOR AND ENZYME ACTIVITY IN TAIL SKIN AND LIVER

ZHU Wei-Dong;REN Shu-Yi;SHENTU Yan;ZOU Li-Chang;WANG Zhi-Zheng;Zhejiang Ocean University;Fishery Technology Extension Center of Yuyao;Forestry and Water Conservancy Bureau of Ningbo Jiangbei;  
We studied water temperature influence on Paa spinosa tadpoles. One-month tadpoles [body length(1.694±0.121)cm, body weight(0.548±0.062)g] were sampled and tested under 19(control group), 21.5, 23, 24.5 and 26°C, under which the tadpole behavior was monitored and tail skin appearance in chromatic aberration observed in Hunter L, A, B color value. We studied the variations in the activities of ATP enzyme, antioxidant enzyme on tail skin, and antioxidant enzyme on liver and set time lengths for temperature stress at 96 h and recovery at 12 d. The results show that water temperature affected significantly the water zonation, and animal flocking and individual movement. The critical water temperatures in which water zonation formed and individual movement significantly changed were 14°C and 26°C. The L value could be used to indicate color change on the tail skin; and it remarkably changed at 26°C, the critical high temperature. The tolerable temperature for ATP enzyme activity on tail skin ranged 21.5—24.5°C. The optimum water temperature for SOD enzyme activity in tail skin and liver was 23°C, while 23°C and 24.5°C for CAT enzyme activity. In addition, when water temperature reached 26°C, SOD enzyme activity in liver decreased with obvious damage in the liver. The optimum water temperature for GSH enzyme activity in liver was 24.5°C, and the critical temperature was 26°C.
【Fund】: 余姚市与浙江海洋学院市院合作项目:棘胸蛙集约化高效养殖关键技术集成与综合示范 2013—2016;; 宁波市鄞州区科技攻关项目:棘胸蛙驯养与繁育技术研究与示范 2013—2014
【CateGory Index】: S917.4
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