不同性比对小菜蛾繁殖及田间种群数量的影响
Effect of different sex ratio on propagate of Plutella xylostella
宫亚军1, 路虹1，石宝才1 ，姚金亮2，康总江1
点击：1823次 下载：7次
DOI：
作者单位：1北京市农林科学院植物保护环境保护研究所北京100097；2北京市延庆县植保站北京102100
中文关键词：小菜蛾，性比，性诱剂，控制效果
英文关键词：Plutella xylostella, sex ratio, sex pheromone，control effect
中文摘要：
不同雌雄比对小菜蛾Plutella xylostella(L.)繁殖的影响以及性诱剂对田间种群的控制效果研究试验结果表明：随雌雄比的提高，雌蛾的产卵量减少，孵化率降低，在1∶1,4∶1状态下平均单雌产卵量分别为79.33粒和76.03粒，平均孵化率为89.03%和78.44%，在13∶1状态下平均单雌产卵量为36粒，平均孵化率仅为46.05%，全雌状态下所产的卵无一孵化。田间应用性诱剂也可有效降低虫数量。
英文摘要： The study on effect of sex ratio on propagate and control of sex pheromone on population of Plutella xylostella (L.) in field showed that higher the sex ratio (female to male) may lead to lower number of eggs laid, and lower hatchability of eggs. Under 1:1 and 4∶1 of female to male, the average eggs each female were 79.33 and 76.03, respectively, and the hatchability of eggs was 89.03% and 78.44%, respectively. Under 13∶1, the average eggs each female were 36, and the hatchability was 46.05%. When all was female, no eggs could hatch. Application of sex pheromone traps in cabbage field may decrease population density.