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橘小实蝇[Bactrocera(Bactrocera)dorsalis(Hendel)]对沙田柚的为害,主要表现在成虫产卵造成果皮的损伤,幼虫在产卵腔取食和在果皮海绵组织中扩散污染。试验观察发现幼虫全部在卵腔和海绵组织中死亡,未发现有幼虫为害果肉。
The damage of Bactrocera (Bactrocera) dorsalis (Hendel) to Pomelo was mainly caused by peel damage caused by spawning of adult larvae, larvae feeding in the oviposition cavity and spreading contamination in the pericarp sponge tissues. Experimental observations found that all the larvae died in the ova and sponge tissue, and no larvae were found to cause damage to the pulp.