紫外线(U.V)对金鱼产卵和受精卵孵化的生物学效应

BIOLOGICAL EFFECT OF ULTRAVIOLET (UV) IRRADIATION ON THE GOLD_FISH'S REPRODUCTION AND ITS HATCHING OF FERTILIZED EGGS

不同剂量的紫外线（ＵＶ）照射金鱼亲鱼和受精卵，对亲鱼的产卵和受精卵的孵化有非常显著的影响．给亲鱼补以适量的紫外线可使金鱼产卵时间提前、产卵量增加．１０″～７０″不同剂量的紫外线照射受精卵可以显著缩短孵化时间，提高孵化率，但由于５０″及以上剂量的照射出现畸形鱼，说明此剂量已偏大。

The different irradiation doses of UV on the parent of gold fish and its fertilized eggs, has a distinct effect on their reproductivity and the hatching of the fertilized eggs. Supplement of a reasonable irradiation dose of UV, could promote the parent fish laying more eggs and earliers; Under irradiation with different doses from 10～70″, the fertilized eggs could shorten the hatching period and increase the efficiency of hatching. Using the UV's irradiation dose over 50″, there will be a certain number of abnormal fish,, which were overdosed. So the doses between 10″ to 40″ is reasonable.