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在Neoseiulus barkeri和Scolothrips takahashii之间的互惠捕食者协会中,内部协会猎物作为内部协会捕食者的替代猎物
Mingxiu Liu1, Mian Wang1, Yuzhen Nima2
1Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China.
Insects
|June 27, 2023
概括
内部猎物,如掠食性 (Neoseiulus barkeri) 和 (Scolothrips takahashii),在它们的主要食物来源 (Tetranychus urticae) 稀缺时,支持掠食者生存和繁殖. 这突显了它们在生物控制持久性中的作用.
科学领域:
- 农业昆虫学 农业昆虫学
- 生物控制 生物控制
- 生态生态学 生态生态学
背景情况:
- 虫Neoseiulus barkeri (虫) 和Scolothrips takahashii (虫) 是Tetranychus urticae (蜘蛛虫) 的生物控制剂.
- 这些捕食者从事协会内捕食,其中一个捕食者消耗另一个捕食者.
- 在初级猎物的可用性较低的时期,内猎物可能会提高捕食者的生存率.
研究的目的:
- 评估内猎物的作用作为N. barkeri和S. takahashii在低密度的Tetranychus urticae的食物来源.
- 为了确定这些捕食者在互相食时的生存,发育和繁殖.
- 为了评估捕食者偏好在内部猎物和共享猎物 (T. urticae) 之间.
主要方法:
- 青少年和成年捕食者被养为异种捕食者 (内属猎物).
- 测量了生存,发育和生殖率.
- 进行了选择测试,以评估猎物偏好.
主要成果:
- 53.3%的N. barkeri和60%的S. takahashii幼虫在内猎物上幸存下来.
- 这两种物种的雌性在被食内科猎物时幸存下来并繁殖.
- 这两种捕食者物种在选择测试中都显示,他们更喜欢T. urticae而不是内猎物.
结论:
- 内部猎物为N. barkeri和S. takahashii提供了关键的替代食物来源,确保在Tetranychus urticae稀缺期间的生存和繁殖.
- 这一发现支持这些生物控制剂在农业生态系统中的持久性.
- 利用协会内部的猎物动态可以减少对连续捕食者释放的依赖,以有效管理害虫.
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