刀豆氨酸对亚洲玉米螟生长发育及生殖的影响

EFFECTS OF L-CANAVANINE ON THE DEVELOPMENT AND FECUNDITY OF ASIATIC CORN BORER,Ostrinia.furnacalis Guenee

较系统地观察了刀豆氨酸对亚洲玉米螟生长发育及生殖的影响。亚洲玉米螟幼虫取食含刀豆氨酸（０．５～２．０ｍｍｏｌ／Ｌ）的半人工饲料后，五龄幼虫体重明显增加，幼虫、预蛹和蛹死亡率升高，成虫寿命明显缩短。在预蛹、蛹和成虫期，处理组出现大量畸形个体，畸形的程度和数量随刀豆氨酸浓度的升高而增加。成虫的生殖力（产卵率和受精率）随刀豆氨酸浓度的升高而迅速下降，试验表明，刀豆氨酸对雌蛾的作用是引起生殖力下降的主要原因，但刀豆氨酸对雌蛾和雄蛾的作用均会使卵受精率明显降低。

A comprehensive observation of the effects of L-canavanine to the growth,developmentand fecundity of Asiatic corn borer,Ostrinia furnacalis Guenee was conduced in thispaper.Canavanine caused a rapid increase of the body weights of the 5th instar larvae,increased the mortalities of larvae,prepupae and pupae,and decreased longivities of adultsfeeding 0.5～2.0mmol/L of canavanine-contaning diets during the larval peried. Someprepupal and pupal deformties were also observed in this experiment. The fecundity incl-uding both the egg laying and fertility was seriesly suppressed by canavanine.It was foundthat the treatment of females resulted mainly in reducing eggs laid,while the fertility wasaffected by both the treated female and male.