两个密切相关但在地理上遥远的宿主物种的防卫行为对抗古古怪寄生虫:平行共进化的下一个测试
Alfréd Trnka1, Laikun Ma2,3, Hanlin Yan4
1Department of Biology University of Trnava Trnava Slovakia.
Ecology and evolution
|June 12, 2023
概括
伟大的长表现出比东方长更强大的防御对常见的子寄生虫的防御能力. 这表明这些物种之间的鸟类宿主-寄生虫共同进化的军备竞赛中的不同阶段.
科学领域:
- 进化生物学 进化生物学
- 行为生态学 行为生态学
- 鸟类学 鸟类学是一门学科.
背景情况:
- 鸟类繁殖寄生,以常见的 (Cuculus canorus) 为例,驱动寄生虫和宿主之间的共同进化军备竞赛.
- 地理上不同的种群可能会表现出这种进化动态的不同阶段.
- 常见与地理上遥远的鸟种类的共同进化历史仍然在很大程度上未被探索.
研究的目的:
- 调查大 (Acrocephalus arundinaceus) 和东方 (Acrocephalus orientalis) 的种群是否处于与常见共同进化的军备竞赛的不同阶段.
- 为了比较这两种宿主物种之间的抗寄生虫行为,包括卵子识别,卵子排斥和侵略.
主要方法:
- 使用非模仿模型蛋和3D打印模型的成年常见的实验操纵.
- 在斯洛伐克 (欧洲) 和中国 (亚洲) 的东方鱼种群中评估宿主反应.
- 量化卵子识别,卵子排斥率和对繁殖寄生虫模型的侵略水平.
主要成果:
- 与东方长相比,大长对模型蛋和成年古古模型的反应明显更强烈.
- 这两种物种都表现出发达的抗寄生虫行为,表明它们对常见的古古怪寄生虫的防御已经建立.
- 不同的防御强度表明研究种群之间的寄生虫压力或风险水平不同.
结论:
- 研究的大长和东方长的种群在与常见共同进化的军备竞赛中表现出不同程度的防御强度.
- 寄生压力的局部差异可能会影响这些宿主物种中抗寄生行为的强度.
- 这项研究为在地理范围内的繁殖寄生虫与宿主共同进化的大规模比较研究提供了基础.
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