塔里木河流域叶尔羌高原鳅的生物学研究

为提高叶尔羌高原鳅人工饲养的成活率,对其年龄、摄食、繁殖习性、适应温度和窒息点及应激性进行了试验研究。结果表明,叶尔羌高原鳅喜栖黑暗,适夜间活动觅食;生长缓慢;生存的最低临界温度为5℃,最高临界温度为33℃,适宜水温在20±1℃;易受惊吓,宜养于无外界干扰流动的水体中,有弱趋光性;溶氧低于2 mg.L-1时活动不正常,当水体温度在20℃时,叶尔羌高原鳅的窒息点为1.18 mg.L-1;在一年中不同的时间,性比有所不同,属分批产卵型,成熟个体大小在不同的环境中也有不同。

Ecological research about Triplophysa(Hedinichthgs)yarkandensis(Day)in Tarim River

For improving the survival of Triplophysa(Hedinichthgs)yarkandensis(Day)in captivity.This study researched the biological habits such as feeding habits,thermophilic habit,sex ratio,phototaxiaing habit,et al.The results showed that the lowest survival temperature was 5℃,and the highest one was 33℃,the optimal one was at 20±℃.The behavior was abnormal when the dissolved oxygen below 2 mg·L-1.The stifle point was 1.18 mg·L-1 when the water temperature was at 20℃.In different months,the sex ratio was different and the size of mature individuals was also different in different habitat environments.