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在虫爆发期间,一年一度的作物比多年生息地贡献更多的捕食者

Crystal D Almdal¹, Alejandro C Costamagna¹

¹Department of Entomology, University of Manitoba, 217 Animal Science/Entomology Building, 12 Dafoe Road, Winnipeg, MB R3T 2N2, Canada.

|July 28, 2023

概括

一年一度的作物,如甘露和小麦,为大豆虫 (Aphis glycines) 控制提供了比常年息地更有益的捕食者. 这种捕食者运动受到虫的数量和息地类型的影响.

科学领域:

农业昆虫学农业昆虫学
生态生态学生态生态学
虫害管理虫害管理虫害管理

背景情况:

捕食者运动对于农业生态系统中的生物控制至关重要.
邻近息地对掠食者进入农作物的影响还没有得到充分研究.
豆 (Aphis glycines) 爆发需要了解捕食者动态.

研究的目的:

解开邻近息地,掠食者密度和猎物可用性对掠食者进入大豆田的影响.
在大豆虫爆发期间,量化掠食者运动和丰富度与不同邻近息地类型的关系.

主要方法:

研究了12个大豆田,这些田地与,甘露,小麦或木质植被接壤.
利用双向的Malaise陷和粘性陷来评估掠食者的运动和丰富性.
通过田间植物计数量量化大豆虫种群.

主要成果:

科科和科科是最丰富的捕食者家族.
类虫和美国类虫 (Eupeodes americanus) 增加了进入大豆的流动,而大豆的虫密度更高.
捕食者丰富度因息地而异;大麻支持比木质植被更高的种群,小麦支持比木质植被更高的coccinellid丰富.

结论:

一年一度的作物,特别是甘露和小麦,在虫爆发期间作为大豆掠食者的重要来源.
息地类型在确定捕食者可用性和进入大豆农业生态系统的移动方面发挥着关键作用.
了解景观背景对于优化对大豆害虫的生物控制至关重要.

关键词:

科奇内利家族 (Coccinellidae) 的一个家族.鱼类 (Syrphidae) 是一个鱼类.邻近的息地息地.捕食者的运动捕食者的运动大豆虫是一种虫.

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