摘要
在长角血蜱雌虫生殖发育的不同时期：刚蜕出（ＭＤ）、刚饱血（ＥＤ）和饱血后２ｄ（２－ＰＥ）局部施用２０－羟基蜕皮酮（２０－Ｅ）和／或法尼醇。结果表明：法尼醇处理ＭＤ组，延缓产卵，抑制卵巢对卵黄蛋白（Ｖｎ）的摄取，降低平均产卵力，且与剂量呈线性相关：ｙ＝５３．１１－０．０８ｘ，高剂量（大于５０μｇ／蜱）引起高死亡率（５０．０－１００．０％不等）；法尼醇处理ＥＤ组，抑制卵巢对Ｖｎ的摄取，降低平均产卵力，高剂量（５００μｇ／蜱）引起高死亡率（８６．７％），低剂量延缓产卵，而高剂量无影响；法尼醇处理２－ＰＥ组，缩短产卵前期，且与剂量呈线性关系：ｙ＝８．５２－０．０１５８ｘ，１－１００μｇ／蜱剂量增加平均产卵力和提高卵巢对Ｖｎ摄取，５００μｇ／蜱剂量严重抑制产卵力；２０－Ｅ处理２－ＰＥ织，延长产卵前期，降低平均产卵力，但利于卵巢对Ｖｎ摄取；法尼醇和２０－Ｅ共同处理２－ＰＥ组，有利于卵巢对Ｖｎ摄取，不同剂量法尼醇和１０μｇ／蜱的２０－Ｅ组合，缩短产卵前期，与２０μｇ／蜱的２０－Ｅ组合，延缓产卵，两种激素一定的组合，提高平均产卵力，各种处理都不影响产卵历期。
During various reproductive development period:just moulting day (MI), engorgement day (ED)and 2 days after engorgement (2-PE), the female ticks (Haemaphysalis longgicornis Neumman) were topically applied different doses of exogenous 20-hydroxyecdy-sone (20-E0 and farnesol.The results lndlcated that the treatment time and the dosage applied had some significant efffects on preoviposition mortatity,preoviposition period, mean oviposition abiltity and ovary′s absorption of vitellin,but the oviposition periods were normal.Mean oviposition ability of MD group and the preovioposition period of 2-PE group were linearly correlated with the doses of farnesol applied significantly. Farnesol decreased the absorption of vitellin and mean oviposition ablilty in ED group.The preoviposition period was prolonged and mean oviposition ability were decreased, but vitellin content per gram ovary was increased in those of 2-PE group applied with farnesol.Different dosage of ffarnesol,combined with 10μg/tick of 20-E, will shorten the preoviposition period, while the opposite effect occured when combined 20μg.tick of 20-E, but both the combinations could increase the mean oviposition ability.
出处
《寄生虫与医学昆虫学报》
CAS
1995年第4期235-242,共8页
Acta Parasitologica et Medica Entomologica Sinica
基金
国家自然科学基金
关键词
蜱
长角血蜱
生殖
蜕皮激素
保幼激素
Haemaphysalis longicornis Neumann
20-hydroxyecdysone
Ffarnesol
Reproduction
