小菜蛾幼虫、蛹和成虫的雌雄形态识别

福建农业学报 ›› 2011, Vol. ›› Issue (4): 611-614.

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

福建省农业科学院植物保护研究所, 福建福州 350013

收稿日期:2011-05-19 修回日期:2011-07-04 出版日期:2011-08-15 发布日期:2011-08-15
通讯作者: 占志雄(1964-),男,研究员,主要从事害虫综合治理研究
基金资助:
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)

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

CHEN Yi-xin, TIAN Hou-jun, WEI Hui, ZHAN Zhi-xiong, HUANG Yu-qing

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

Received:2011-05-19 Revised:2011-07-04 Online:2011-08-15 Published:2011-08-15

摘要/Abstract

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。

关键词: 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 9^th abdominal segment.The female pupae had a long,longitudinal slip between the genital pore on the 8^th abdominal segment and the oviporus on the 9^th 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.

Key words: Plutella xylostella, larvae, pupae, abdomen, gonopore

中图分类号:

S476.3

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[J]. 福建农业学报, 2011, (4): 611-614.

CHEN Yi-xin, TIAN Hou-jun, WEI Hui, ZHAN Zhi-xiong, HUANG Yu-qing. A Simple Method for Identifying Sex of Plutella xylostella(Linnaeus)Larva, Pupa and Adult[J]. Fujian Journal of Agricultural Sciences, 2011, (4): 611-614.

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