福建农业学报2011，Vol.26Issue(4)：611-614,4.
小菜蛾幼虫、蛹和成虫的雌雄形态识别
A Simple Method for Identifying Sex of Plutella xylostella (Linnaeus) Larva, Pupa and Adult
摘要
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 9-1 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.关键词
小菜蛾/幼虫/蛹/腹部/生殖孔Key words
Plutella xylostella / larvae/ pupae/ abdomen/ gonopore分类
农业科技引用本文复制引用
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,2011,26(4):611-614,4.基金项目
国家自然科学基金(30971922) （30971922）
福建省自然科学基金(2010J06008) （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) （2009R10028-5）
福建省农业科学院青年科技人才创新基金项目(2010QB16) （2010QB16）
