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瓜实蝇Bactroceracu curbitae(Coquillett)可危害100多种寄主植物,是葫芦科蔬菜的重要害虫。为了探明瓜实蝇的寄主特异性,在实验室条件下研究了瓜实蝇对黄瓜Cucumis sativus、苦瓜Momordica charantiap、丝瓜Luffa cylindrica、南瓜Cucurbita moschata、番木瓜Carica papaya和西葫芦Cucurbita pepo的产卵选择性。瓜实蝇在苦瓜和黄瓜上的产卵比率较高,分别为56.18%和29.00%,在番木瓜和南瓜上产卵比率较低,分别为1.85%和0.00%,但是在去掉果皮后,黄瓜、西葫芦和南瓜的产卵比率较高,分别达到34.64%、30.37%和18.05%,在番木瓜上的产卵率较低仅为0.60%。瓜实蝇雌虫在带皮果实上的产卵比率与果皮硬度呈显著的负相关关系,相关系数为-0.8772。结果表明除了自身的化合物之外,植物具有的物理屏障如坚硬的表皮会影响瓜实蝇产卵。
Bactroceracu curbitae (Coquillett) can harm more than 100 kinds of host plants, is an important pest of Cucurbitaceae vegetables. In order to explore the host specificity of melon flies, the oviposition of melon flies against cucumbers Cucumis sativus, Momordica charantiap, Luffa cylindrica, Cucurbita moschata, Carica papaya and Cucurbita pepo were studied under laboratory conditions Sex. The rate of spawning of melon flies on bitter gourds and cucumbers was 56.18% and 29.00% respectively, while the spawning rates on papaya and pumpkin were lower at 1.85% and 0.00%, respectively. However, after removing the peels, cucumber The spawning rates of zucchini and pumpkin were higher, reaching 34.64%, 30.37% and 18.05% respectively, while the spawning rate on papaya was only 0.60% lower. There was a significant negative correlation between the oviposition rate and the pericarp hardness of the fruits of Melon flies female on peel, the correlation coefficient was -0.8772. The results showed that in addition to its own compounds, the physical barriers that plants have, such as hard epidermis, affect the fruit fly spawning.