橘大实蝇对三种寄主植物的偏好比较

Preference and performance of Bactrocera (Tetradacus) minax on three host plants

比较取食3种不同寄主植物脐橙、杂柑、蜜橘对橘大实蝇Bactrocera(Tetradacus)minax(Enderlein)的蛹特征、卵量及为害率的影响,研究橘大实蝇对寄主植物的选择性。结果表明,取食蜜橘的橘大实蝇其蛹长及蛹宽显著大于取食脐橙的;取食杂柑的与取食脐橙的无显著差异。三者之间蛹重差异显著。取食蜜橘的雌成虫卵量显著大于取食脐橙的,取食杂柑的雌成虫卵量与取食脐橙的其无显著差异。对寄主植物的为害率顺序为:脐橙>杂柑>蜜橘。

Based on the investigation of the damage of Bactrocera （ Tetradacus ） minax on different host plants, egg quantity and the effect of host plants on the pupal size, the fruit fly＇ s selectivity for host plants was analyzed. The results indicated that the pupae length and diameter of the pest fed with satsuma orange are significant larger than those fed with navel orange, and no significant difference between hybrid orange and navel orange; the pupal weight is significant difference among the three host species; the egg quantity of female adults feeding with Satsuma orange is significant bigger than feeding with navel orange, and no significant difference between hybrid orange and navel orange; the damage rates are in following order： navel orange 〉 hybrid orange 〉 satsuma orange.