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大猿叶虫Colaphellus bowringi Baly是十字花科蔬菜的一种重要害虫,以成虫在土壤中滞育越冬和越夏。本研究通过解剖大猿叶虫非滞育成虫,观察描述了雌雄成虫内生殖系统的结构特点,并绘制了雌雄成虫内生殖系统模式图。对滞育初期、滞育期间、滞育解除后未取食和滞育解除后取食成虫解剖显示,滞育初期,雌雄成虫内生殖系统几乎与羽化初期成虫一致。滞育期间雄成虫的附腺和射精管亦不发达,滞育解除后未取食雄成虫的附腺膨大且粗于输精管,射精管略膨大,取食雄成虫的射精管呈不透明淡桔黄色。滞育期间雌成虫的卵巢小,略大于滞育初期卵巢,少数卵巢小管的基部可见具卵黄原沉淀的卵粒。滞育解除后未供食雌成虫卵巢明显膨大可见大量成形卵粒,部分卵粒可见卵黄原沉淀;取食雌成虫的卵巢膨大,可见大量成熟卵粒,侧输卵管和总输卵管中可见待产的卵。作者认为,大猿叶虫成虫在滞育期间能够缓慢发育,部分滞育前积累的代谢物质被用于滞育后发育,但只有经过取食,成虫才能正常交配和产卵。
Colaphellus bowringi Baly is an important pest of cruciferous vegetables with diapause overwintering and summer over adults in the soil. In this study, we dissected the non-diapause adults of Larvae, observed and described the structural characteristics of the reproductive system in both male and female adults, and mapped the patterns of reproductive system in both male and female adults. During the initial stage of diapause, the diapause period, the unfertilized and diapause un-fed diapause after the diapause was released, the adult reproductive system of the male and female adults almost coincided with the adult stage of eclosion. Adipose gland and ejaculatory duct of adult male during diapause are also underdeveloped. After the diapause is removed, the male gland appendages are enlarged and thicker than the vas deferens, and the ejaculatory ducts are slightly enlarged. The ejaculatory duct of male adults is opaque and pale orange . During the diapause period, the ovary of the female adult was smaller than the initial stage of diapause. The base of the few ovarian tubules showed the eggs with the yolk precipitation. After diapause termination, the female adult ovaries were not swollen obviously. A large number of shaped ovoids were observed, and some yolk granules were found to precipitate yolk. The enlarged ovary of female feeding adults showed a large number of mature ova, oviducts and total fallopian tubes . The authors believe that adults of the Great Lepidoptera can develop slowly during diapause, and some of the metabolites accumulated before diapause are used for diapause development. However, adult adults can mate and lay eggs only after feeding.