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本试验研究了循环水养殖条件下白条双锯鱼(Amphiprion frenatus)幼鱼在不同光照环境中的生长状况和体色变化特点。设置白色、红色、黄色、蓝色、绿色五个光照试验组,每组三个重复,试验周期120d。结果表明,各试验组幼鱼存活率和特定生长率均无显著性差异(P>0.05),增重率在红光组和绿光组间差异显著(P<0.05)。试验鱼红光组红色皮肤胡萝卜素含量显著高于蓝光、黄光和绿光组(P<0.05);白光组红皮中胡萝卜素含量显著高于蓝光组(P<0.05);在眼、肝、肌肉和白色皮肤组织中胡萝卜素含量在各试验组间无显著性差异(P>0.05)。白光组肝组织中酪氨酸酶活性活性显著高于红光组(P<0.05);在眼、皮肤、肌肉组织中各试验组酪氨酸酶活性无显著性差异(P>0.05)。研究表明,在循环水养殖条件下,白条双锯鱼在红光环境下体表类胡萝卜素含量增加,而酪氨酸酶活性减弱,有提高鱼体色泽鲜艳度的作用,此研究结果可为人工养殖海水观赏鱼的体色改善提供理论依据。
The present study investigated the growth and body color changes of Amphiprion frenatus juveniles under different light conditions under recirculating aquaculture. Set white, red, yellow, blue, green five light test group, each of three replicates, the test period of 120d. The results showed that there was no significant difference in survival rate and specific growth rate of juvenile fish in each experimental group (P> 0.05). The weight gain rate was significantly different between red and green light groups (P <0.05). The content of carotene in red skin of test fish was significantly higher than that of blue light, yellow light and green light (P <0.05), while that of white light was significantly higher than that of blue light (P <0.05) There was no significant difference in the content of carotenoids in muscle and white skin between the experimental groups (P> 0.05). The activity of tyrosinase in white light group was significantly higher than that in red light group (P <0.05). There was no significant difference in tyrosinase activity in each group (P> 0.05) in eyes, skin and muscle tissues. The results showed that under the condition of recirculating aquaculture, the carotenoid content of white striped amphibian increased under the red light environment, while the tyrosinase activity decreased, which enhanced the vivid color of the fish. The results of this study could be artificial Aquaculture aquaculture fish body color to provide a theoretical basis for improvement.