植物原生学决定了寡食叶虫Cassida rubiginosa的宿主选择和接受
Dilani K Hettiarachchi1,2, Michael Rostás1,3, Jon J Sullivan4
1Bio-Protection Research Centre, Lincoln University, Lincoln, New Zealand.
Pest management science
|July 14, 2023
概括
生物控制甲虫Cassida rubiginosa在宿主植物选择中显示出一个明确的家族遗传模式,主要针对Cirsium和Carduus物种. 这一发现对于预测杂草生物控制剂的宿主范围和有效性至关重要.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 预测生物控制剂宿主范围对于有效的杂草管理至关重要.
- 卡西达 (Cassida rubiginosa) 是Cirsium arvense的一种生物控制剂,有可能影响其他卡迪亚 (Cardeae) 种.
- 了解宿主选择模式可以告知生物控制的安全性和有效性.
研究的目的:
- 研究生物控制甲虫Cassida rubiginosa中宿主选择和接受的遗传模式.
- 为了模拟甲虫的反应与其主要宿主Cirsium arvense.的基因遗传距离有关.
- 评估C. rubiginosa在Cardueae部落中的潜在宿主范围.
主要方法:
- 进行了无选择和选择养和卵置实验.
- 评估使用单一和双重气味剂的嗅觉识别和偏好.
- 模拟虫的反应与C. arvense.的基因遗传距离相比.
主要成果:
- 嗅觉识别和偏好显示出显著的基因关系,基因解释了分别66.9%和82.8%的变化.
- 在选择条件下,遗传学距离强烈预测了食 (63.4%的变化解释) 和排卵 (89.0%的变化解释) 的偏好.
- 在无选择条件下,在宿主植物接受中没有观察到遗传学模式.
结论:
- 这项研究表明了一种草食昆虫的嗅觉宿主植物选择中的基因结构模式.
- 新西兰C. rubiginosa的宿主植物利用可能仅限于Cirsium和Carduus物种.
- 对其他Cardueae杂草的潜在影响是最小的,支持该代理的特定宿主范围.
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