紫外线辐照对蒙古裸腹溞生长、发育和生殖的影响

本文研究了不同剂量紫外线辐照（0~150 mj/cm2）对蒙古裸腹溞 (Moina mongolica Daday) 生长、发育和繁殖的影响。结果表明，高剂量紫外线辐照（ 70 mj/cm2 以上）会对蒙古裸腹溞造成较大伤害或使之繁殖力下降，如实验1中70 mj/cm2处理组产幼前发育期为5.8d， 每窝产幼量为13个/窝，一生产幼量为186个，而其他各处理（10、20、30、40和50 mj/cm2）和对照组上述指标依次为5.4~5.6 d，23.9~33.1个/窝和406.8~535.8个。小剂量UV辐照对蒙古裸腹溞生长和生殖均有促进或刺激作用，如实验1中处理组蒙古裸腹溞一生产幼量和体长增长率一般都比对照组高，而在实验2中处理组成龄溞的累积发育时间均短于对照组。文后对紫外线辐照对水生生物的影响以及在蒙古裸腹溞大量培养中的应用前景进行了讨论。

Effect of Ultraviolet radiation on Growth, Development and Reproduction of Moina mongolica Daday

The effects of ultraviolet radiation ( 0-150 mj﹒cm-2) on the growth, development and reproduction of Moina mongolica Daday were studied. Two experiments were conducted in laboratory. The results showed that M. mongolica had been injured seriously and its fecundity were decreased in high dosage of UV radiation (above 70 mj cm-2) e.g. pre-reproduction period , neonates number per brood and fecundity was 5.8d, 13 ind. brood-1 and 186 ind. respectively. And relate indicates were 5.4-5.6d, 23.9-33.1ind. brood-1 and 406.8-535.8 ind. respectively, in other treatments groups ( UV 60, 50 ,40 ,30 ,20,10 mj cm-2) and control group. The capability of growth or reproduction of M. mongolica , such as life fecundity and daily increase rate of body length could be stimulated by low dosage of UV radiation. E.g. above two indicates in treatment group were higher than those of control grops in experiments 1; the cumulative duration of development of adult instar of M. mongolica in treatment groups was less than that of control groups in experiment 2. The effects of UV radiation on the life of aquatic organisms and use prospect in mass culture of M. mongolica were discussed.