摘要
该文报道外源蜕皮激素（ED）和保幼激素类似物（JHA）对褐飞虱NilaparvatalugensStal）翅型分化及体内酯酶活性、可溶性糖和游离氨基酸含量等的影响。福飞虱在3、4龄若虫期经JHA处理后，所羽化出的成虫短翅型比例明显升高；而在5龄若虫期处理，所羽化出成虫的短翅型比例无明显变化。ED处理能增加3、4龄若虫体内酯酶活性、可溶性糖及游离氨基酸含量，而JHA处理则能有效地抑制ED的这些生物活性，这可能是JHA处理后褐飞虱成虫短翅型比例提高的生理生化基础。
The influence of exogenous hormones on wing dimorphism of Nilaparuata lugens was studied. It was found that when the nymphs of 3rd and 4th instar were treated with juvenile hormone analog (JHA 734-Ⅱ ), the numbers of brachypterous adults were increased by about 70% and 30% respectively as compared with the control. However , when the last (sib) instar nymphs were treated, the percentage of brachypterous adults did not increase. It seems that juvenile hormone could play an important role in the differentiation of wing dimorphism in N. lugens and this effect occurs at a critical stage-4th instar. The esterase activity, the contents of soluble sugar and free amino acids in the 3rd and 4th instar nymphs were raised by about 13%～14%, 24h after topical treatment with 4 μg/mL ecdysterone (ED), but were reduced when treated with 0. 31 μg/mL JHA. When the nymphs were treated with a mixture of ED and JHA, the result was similar to that with JHA solely. It is suggested that ED could promote the development of imaginal disc, which might be partly suppressed by JHA.
出处
《昆虫学报》
CAS
CSCD
北大核心
1998年第4期371-375,共5页
Acta Entomologica Sinica
基金
国家自然科学基金
关键词
褐飞虱
外源激素
翅型分化
酯酶
可溶性糖
Nilaparvata lugens, exogenous hormones, wing dimorphism, esterase,soluble sugar, free amino acids
