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用1%浓度的保幼激素类似物ZR515(JHA—ZR515)分别以40μl/尾、70μl/尾和100μl/尾三个剂量点滴罗氏沼虾均能不同程度提高罗氏沼虾产卵率。其中40μl/尾剂量组产卵率为75%,比对照组高出1倍多,亲虾存活率为100%,孵出的蚤状幼体发育正常。单侧去眼柄能提高罗氏沼虾产卵率,但亲虾存活率较低。用17α—羟孕酮以2.2μg/尾注射罗氏沼虾显示抑制产卵效应。
The rate of spawning of Macrobrachium rosenbergii could be increased to a certain extent with 1% concn. Of the juvenile hormone analog ZR515 (JHA-ZR515) at the doses of 40μl / tail, 70μl / tail and 100μl / tail respectively. Among them, the rate of spawning in 40μl / tail dose group was 75%, more than double that in control group, and the survival rate of broodstock was 100%. The hatched flea larvae developed normally. Unilateral eyelid can improve the productivity of Macrobrachium rosenbergii, but lower survival rate of broodstock. Inoculation with 17α-hydroxyprogesterone at 2.2 μg / tail showed that inhibition of spawning effect was observed.