长角血蜱性信息素生物合成的激素调控

用气相色谱和高效液相色谱分别对长角血蜱雌蜱盾窝腺中性信息素２，６－二氯酚含量和整体蜕皮激素２０－羟基蜕皮酮含量进行了测定。结果表明，雌蜱２，６－ＤＣＰ生物合成开始于由若早蜕出后５ｄ，之后其含量增加并在盾窝腺中沉积，吸血前后达到高峰，吸血后３ｄ开始下降，但吸血后３－５ｄ内保持在一恒定水平，此期内２，６－ＤＣＰ释放以吸引雄蜱，吸血后７ｄ即交配后含量急剧下降，饱血后下降为零。

HORMONALREGULATIONOF THE SEX PHEROMONE BIOSYNTHESIS IN ADULT FEMALE OFHAEMAPHYSALIS LONGICORNIS(ACARI:OXODIDAE)

Quantitative variation of the sex pheromone, 2,6-DCP, in fovtal gland andedysteroid (20-E) in whole body of female Haamaphysalis longicornis were detected by GCand HPLC separately. The results suggeStal that 2,6-DCP biosynthesis occurred on the 5thday aftermoulting from nymph, then it increased and deposited in the foveal gland andreached a peak(11.12 ng .tick-1) on the day just before or after feding. On the 3rd day afterfeeding, it declined and maitained at a relatively stable level between 3rd and 5th day afterfeeding. During this period, 2,6 -DCP released and exed the male searching behaviour. Aftermating, 2,6-DCP decrease signficantly and could not detected on the engorgement day. Apeak of 20-E was detected on the 3rd day aftermoulting from nymph. It wight initiate thebiosynthesis of 2, 6-DCP. Injdsn of exogenous20-E and JH III on the lst dayaftermoulting from nymph could enhance the quantity of 2,6-DCP. The above results indi cated that 2,6-DCP biosynthesis was controlled by hormones.