小菜蛾幼虫、蛹和成虫的雌雄形态识别

陈艺欣; 田厚军; 魏辉; 占志雄; 黄玉清

小菜蛾幼虫、蛹和成虫的雌雄形态识别

1.
福建省农业科学院植物保护研究所, 福建福州 350013

基金项目:

国家自然科学基金(30971922);福建省自然科学基金(2010J06008);福建省科技计划——省属公益类科研院所基本科研专项(2009R10028-5);福建省农业科学院青年科技人才创新基金项目(2010QB-16)

详细信息

通讯作者:
占志雄(1964-),男,研究员,主要从事害虫综合治理研究

中图分类号: S476.3
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- 被引次数: 0
出版历程
- 收稿日期: 2011-05-19
- 修回日期: 2011-07-04
- 刊出日期: 2011-08-15

A Simple Method for Identifying Sex of Plutella xylostella(Linnaeus)Larva, Pupa and Adult

1.
Institute of Plant Protection Fujian Academy of Agricultural Sciences, Fouzhou, Fujian 350013, China

摘要

摘要: 在形态观察基础上,结合相关文献,系统描述了小菜蛾幼虫、蛹和成虫的雌雄形态快速识别特征。结果表明,用肉眼和光学显微镜无法区分小菜蛾1龄和2龄幼虫的性别,但可以区分3龄和4龄幼虫的性别,主要特征是雄虫在第5腹节内有睾丸,背面呈浅黄色,与相邻体节形成明显区别。小菜蛾雄蛹第9腹节腹面有1个生殖孔,形成短纵裂缝且两边各有一瘤状突起,而雌蛹第8腹节腹面有1个生殖孔,第9腹节腹面有1个产卵孔,2孔之间连成长纵裂缝。雄蛾翅后缘从翅基到外缘呈三度曲波状的黄褐色带,腹部末端钳状,抱握器微张开;雌蛾体色较雄蛾淡,个体较雄蛾大,腹部末端圆筒形。
- 小菜蛾 /
- 幼虫 /
- 蛹 /
- 腹部 /
- 生殖孔
Abstract: Based on the morphological appearances and descriptions in literature,a simple and convenient method for identifying the sex of diamondback moth(DBM),Plutella xylostella(Linnaeus),was developed.The results showed that the sex of the first-and second-instar larvae was not easily distinguishable by naked eyes or optical microscopic observation.However,the male third-and fourth-instar larva showed a lighter colored fifth abdominal segment than that on the female counterparts.On the male pupae,a lump on each side of a short,longitudinal slip was visible near the gonopore on the 9th abdominal segment.The female pupae had a long,longitudinal slip between the genital pore on the 8th abdominal segment and the oviporus on the 9th segment.The adult males had characteristic brown wings with a wavy edge on the posterior margin and a yorked abdominal end.The female adults,on the other hand,were lighter in color and bigger on body size than the males,and had their abdominal ends appeared round in shape.
- Plutella xylostella /
- larvae /
- pupae /
- abdomen /
- gonopore

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参考文献(3)

[1]	TALEKAR N S, SHELTON A M.Biology, ecology,a nd management of the diamondback moth[J].Annual Review of Entomology,1993, 38: 275-301.
[2]	王香萍,方宇凌,张钟宁. 小菜蛾对合成植物挥发物的活性反应[J]. 昆虫学报, 2005, 48(4):503-508.
[3]	CHEN X D, NAKASUJI F.Diminished egg size in fenvalerate resistant strains of the diamondback moth Plutella xylostella(Lepidoptera : Yponomeutidae)[J].Applied Entomology and Zoology,2004, 39: 335-341.