三峡河谷地区柑橘大实蝇羽化、交配及产卵习性

对柑橘大实蝇Bactrocera(Tetracus) minax(Enderlein)的羽化、交配与产卵习性进行初步观察。结果表明,柑橘大实蝇的出土始期为每年的5月8日~5月14日,高峰为5月12日~5月18日,末期为5月30日~6月4日,近几年出土时间有所提前。在早熟蜜柑上主要产卵于果腰部,深度约为4.5mm;在中晚熟蜜柑上主要产卵于果蒂部,深度约为4.1mm;在脐橙上主要产卵于果脐部,深度约为9.7mm;在柚上主要产卵于果蒂和果腰部,深度约为13.0mm。观察结果也与以往记载有所不同。

Mating and oviposition behavior of the Chinese citrus fly, Bactrocera ( Tetracus ) minax, in Sanxia gorge valley area

This report has summarized the emergence time of Chinese citrus fly, Bactrocera(Tetracus) minax(Enderlein) and its copulation and oviposition behavior,completed the statistics about the oviposition spot and depth. The unearthed beginning time of Chinese citrus fly is in May 8 to 14 every year,the peak is in May 12 to 18,the last stage is in May 30 to June 4.But in recent years,the unearthed time has gone ahead. The oviposition spots are major on the fruit waist of early maturing sweet orange, its depth is about 4.5 mm. The spots are near fruit stalk of the mid late maturing sweet orange, the depth is about 4.1 mm. The spots are on the navel of navel orange, the depth is about 9.7 mm, And the spots are on the fruit waist and stalk of the pomelo, the depth is about 13 mm.The observation result is different from former records.