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当前位置: 首页 > 文章 > 长角血蜱若虫发育期20-羟基蜕皮酮含量变化与表皮发生的关系 昆虫学报 2001,44 (1) 49-53+133
Position: Home > Articles > Correlation between 20-hydroxyecdysone levels and cuticulogenesis in nymphs of Haemaphysalis longicornis Acta Entomologica Sinica 2001,44 (1) 49-53+133

长角血蜱若虫发育期20-羟基蜕皮酮含量变化与表皮发生的关系

作  者：
刘敬泽;李永良;姜在阶
单  位：
河北师范大学生命科学学院;北京师范大学
关键词：
长角血蜱;若虫;20羟基蜕皮酮;表皮发生
摘  要：
用高效液相色谱和放射免疫分析对长角血蜱Haemaphysalislongicornis若虫发育期整体蜕皮激素 (2 0 E)含量变化进行了测定 ,并用扫描电镜对其表皮结构及其发生进行了观察。 2 0 E存在于若虫整个发育期 ,饥饿、吸血和饱血后前 4天 ,激素水平低 (0 71～ 1 30ng/头 ) ;饱血后 6天明显增加 ,此时皮层溶离开始 ,蜕皮间隙形成 ;饱血后 7天继续增加 ;饱血后 8天 ,2 0 E含量达到高峰 (8 70ng/头 ) ,此时若虫开始沉积新的上表皮 ;高峰后 ,2 0 E含量急剧下降 ,直到蜕皮前保持低水平 ,此期内沉积新的原表皮 ,旧表皮被部分吸收。上述结果显示出 2 0 E含量急剧增加及其高峰分别与启动皮层溶离和新的上表皮沉积相吻合 ,2 0 E与新的原表皮沉积无关。
译  名：
Correlation between 20-hydroxyecdysone levels and cuticulogenesis in nymphs of Haemaphysalis longicornis
作  者：
LIU Jing\|ze 1, LI Yong\|liang 2, JIANG Zai\|jie 2 (1. College of Life Science, Hebei Normal University, Shijiazhuang\ 050016, China; 2. Beijing Normal University, Beijing\ 100875, China)
关键词：
Haemaphysalis longicornis; nymph; 20\|hydroxyecdysone; cuticulogenesis
摘  要：
The changes of ecdysteroid (20\|E) in the whole body and cuticulogenesis during nymphal stage were studied by HPLC and RIA, and SEM respectively. 20\|E existed in all the nymphal stages. Its level was low in nymphs unfed, feeding and during the first 4 days after engorgement(0 71～1 30?ng/nymph). Then it began to increase sharply on the 6th day after engorgement when apolysis was initiated and exuvial space appeared. 20\|E reached its peak (8 70?ng/nymph) during the deposition of the new epicuticle on the 8th day after engorgement. Thereafter, 20\|E dropped to low value again. The procuticle deposition and old cuticle digestion occurred during this period. There results demonstrated that the highest concentration and sharp increase of 20\|E were coincident with the deposition of new epicuticle and the formation of exuvial space (apolysis) separately. No relationship was observed between 20\|E concentration and new procuticle synthesis.

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