提高林蛙幼蛙存活率的研究  

Studies on Improving the Survival Rate of Young Rana chensinensis

作　　者：崔铁花 勾天兵 姚旭东[1] 张士俊[1] 邹建军[1] 任宣百 徐太成 

机构地区：[1]吉林省林业科学研究院,长春130033 [2]吉林省林业技术推广站,长春130020 [3]靖宇县三道湖镇浆源林蛙养殖场,吉林白山135200

出　　处：《东北农业科学》2017年第6期45-48,共4页Journal of Northeast Agricultural Sciences

基　　金：国家林业局林业公益性行业科研专项(201204614)

摘　　要：为安全疏散蝌蚪至变态池,通过对变态幼蛙进行辅助喂养,提高幼蛙存活率以实现增产的目的,利用增氧试验对不同变态期蝌蚪的存活情况进行研究。研究了幼蛙耐饥饿极限,用2日龄蝇蛆对幼蛙进行辅助喂养试验,观察辅助喂养效果。研究表明双氧水配制的增氧液能够提高水中溶解氧浓度,有利于蝌蚪安全运送;疏散变态蝌蚪的有利时机是进入变态期后未长出前肢时进行;完成变态的幼蛙耐饥饿极限天数是6~8 d,利用2日龄蝇蛆辅助喂养能够提高幼蛙存活率并实现增产。In order to increase the yield, the tadpoles were safely evacuated to the metamorphosis pool and then the survival rate of the metamorphosis young Rana chensinensis were improved through the complementary feeding. The survival condition of the tadpoles in the different metamorphosis stages was studied using the oxygen aeration experi- ment. The starvation tolerance of the young Rana chensinensis was studied. The young Rana chensinensis was fed with two-day-old housefly larvae to observe the effect of complementary feeding. The results showed that the con- centration of dissolved oxygen in the water increased with the liquid prepared with hydrogen peroxide, which was fa- vorable for the evacuation of the tadpoles. It was optimal that the metamorphosis tadpoles were evacuated before they grew forelimbs. The starvation tolerance of the metamorphosis young Rana chensinensis was 6-8 d. The survival rate of the young Rana chensinensis was improved through the complementary feeding with two-day-old housefly lar- vae to increase the yield.

关 键 词：幼蛙 增氧 辅助喂养 存活率 

分 类 号：S966.35[农业科学—水产养殖]