摘要
成虫营养是影响甜菜夜蛾生殖力的关键因素。本文采用不同的成虫营养处理,观察雌蛾产卵量,卵巢发育及卵黄蛋白含量的变化。饲喂清水对其生殖力产生较大影响,产卵量比饲喂槐花蜜的处理下降41%,但饲喂清水对其卵的孵化率影响不大。缺乏成虫期营养的处理,卵量、交配率和卵孵化率大大下降。成虫期营养缺乏时产卵前期明显延长,卵期和寿命缩短。成虫期取食清水对卵巢管长度和卵巢鲜重影响不大,而缺乏成虫期营养的处理,卵巢发育状况很差。营养状况与虫体内脂肪含量密切相关,饲喂清水与缺乏成虫营养的处理,腹部脂肪占干重的百分比分别比饲喂槐花蜜的处理下降了24%和18%。
Effects of adult feeding on female duration,fecundity and ovary development of the female beet armyworm,Spodoptera exigua,were investigated quantitatively.Adult feeding had significant influence on female duration,fecundity and ovary development of female moths.Females with supplementary food lived longer and deposited more eggs,and ovaries developed normally.With deterioration of adult feeding,Fecundity was more affected than adult duration was.Preoviposition periods lengthened and oviposition periods shortened.When female adults lacked the foods,the effect was the most significant.The mating rate and hatching rate were the lowest.Adult food significantly affected the fresh weight and dry weight of female abdomens.The fresh weight,dry weight and fat content of female abdomens decreased less when the females were provided with supplementary food.Adult feeding seemed to be an important factor in population ecology of the beet armyworm.
出处
《西南农业学报》
CSCD
2004年第1期34-37,共4页
Southwest China Journal of Agricultural Sciences
基金
山东省利用世界银行贷款资助项目
