| 烟蚜茧蜂种内寄主识别与内部竞争 |
| 点此下载全文 |
| 引用本文：梁启富,刘冬冬,刘同先.烟蚜茧蜂种内寄主识别与内部竞争.植物保护学报,2018,45(2):187-193 |
| DOI：10.13802/j.cnki.zwbhxb.2018.2016157 |
| 摘要点击次数: |
| 全文下载次数: |
|
|
| 中文摘要:为明确寄生桃蚜Myzus persicae（Sulzer）的单性内寄生蜂烟蚜茧蜂Aphidius gifuensis Ashmead的种内识别与内部竞争，研究测定不同寄主密度对烟蚜茧蜂雌蜂卵的分布影响，以及不同产卵时间间隔对自身和同种寄主识别、种内内部竞争的影响。结果显示，烟蚜茧蜂在寄主密度为30头以下时，过寄生率高于31.16%；而寄主密度为50头以上时，过寄生率低于6.64%。在24 h以上的产卵时间间隔下，烟蚜茧蜂的自身过寄生率高于37.04%，而同种过寄生率在22.45%~25.93%之间；而且龄期较高的幼虫在种内内部竞争中获胜的概率高于72.00%。表明烟蚜茧蜂在低寄主密度下倾向于过寄生，在高寄主密度下有避免过寄生的趋势；烟蚜茧蜂倾向于自身过寄生，而对同种过寄生表现出一种产卵限制；在烟蚜茧蜂的种内内部竞争中，龄期较高的幼虫一般具有优势。 |
| 中文关键词:烟蚜茧蜂 桃蚜 过寄生 卵分布 寄主密度 时间间隔 |
| |
| Intraspecific host discrimination and intrinsic competition in parasitoid Aphidius gifuensis Ashmead (Hymenoptera: Braconidae: Aphidiinae) |
| Author Name | Affiliation | E-mail | | Liang Qifu | College of Plant Protection, Northwest A & F University, Yangling 712100, Shaanxi Province, China | | | Liu Dongdong | College of Plant Protection, Northwest A & F University, Yangling 712100, Shaanxi Province, China | | | Liu Tongxian | College of Plant Protection, Northwest A & F University, Yangling 712100, Shaanxi Province, China | txliu@nwsuaf.edu.cn |
|
|
| Abstract:To clarify the intraspecific host discrimination and intrinsic competition in parasitoid Aphidius gifuensis Ashmead parasitizing the green peach aphid, Myzus persicae (Sulzer), the influence of host density on egg distribution was determined, and the effects of different time intervals of oviposition on self- and conspecific discrimination and intraspecific intrinsic competition were also studied. The results demonstrated that at ≤30 host density, superparasitism percentages of A. gifuensis were more than 31.16%; at ≥50 host density, superparasitism percentages were less than 6.64%. At ≥24 h interval, selfsuperparasitism percentages of A. gifuensis were more than 37.04%, while conspecific superparasitism percentages were 22.45%-26.32%, and the winning probabilities of the older larvae were more than 72.00%. Therefore, A. gifuensis tended to superparasitize green peach aphids at low host density, whereas it had a tendency to avoid superparasitism at higher host density. A. gifuensis tended to superparasitize aphids previously parasitized by itself, while this parasitoid showed an oviposition restraint to conspecific superparasitism. In intraspecific intrinsic competitions, the older larvae of this parasitoid commonly had superiority. |
| keywords:Aphidius gifuensis Myzus persicae superparasitism egg distribution host density time interval |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
您是本站第 8715575 版权所有：植物保护学报 京ICP备05006550号-2 主管单位：中国科协 主办单位：中国植物保护学会、中国农业大学 地址：北京市圆明园西路2号 中国农业大学植物保护学院 植物保护学报编辑部 电话：010-62732528 电子邮件：zbxb@cau.edu.cn 技术支持： 北京勤云科技发展有限公司 |
