低温处理对枇杷中橘小实蝇的杀灭效果

【背景】橘小实蝇是水果国际贸易中被关注的有害生物。枇杷为福建名优水果，同时福建为橘小实蝇疫区，枇杷橘小实蝇的检疫处理技术是保证枇杷出口的关键环节。【方法】对人工接入枇杷果实中的橘小实蝇卵和幼虫的低温感受性、小规模处理和大规模处理及低温对枇杷果实品质的影响进行研究。【结果】橘小实蝇2—3龄幼虫混合虫态最耐受低温；1．5℃下处理12d，可完全杀死枇杷果实中的橘小实蝇，并且低温处理对枇杷果实无损伤。【结论与意义】低温可用于枇杷内橘小实蝇的检疫处理。

Cold treatment against oriental fruit fly Bactrocera dorsalis in Ioquat fruits

Backgronud ] Oriental fruit fly, Bactrocera dorsalis, is one of quarantine pests targeted in the international fruit trade. Loquat is a famous fruit in Fujian where B. dorsalis is also present. For export of loquat fruit, treatments against B. dorsalis must be used. This study aimed to test the use of cold treatment as a way to reduce the issue of B. dorsalis during loquat exportation. Method] Sensitivity to cold tests, small scale disinfestation tests and large scale disinfestation tests were conducted with artificially inoculated eggs and larva of B. dorsalis in loquat fruits were treated to various temperatures and small and large scale disinfection and tested for sensitivity. Result]The results showed that the 2 -3 mixed instar larvae were the most tolerant stages to low temperature. The fruit flies could be completely killed at 1.5℃ when exposed for 12 days. There was no damage on loquat fruit due cold temperature treatment. Conclusion and significance] Cold treatment can be used as a quarantine measure for B. dorsalis in loquat fruits.