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适应是否与地理范围的长期持久性相关?
Regan L Cross1, Christopher G Eckert1
1Department of Biology, Queen's University, Kingston, ON, Canada.
Evolution; international journal of organic evolution
|June 13, 2024
概括
沿海沙丘植物 (Camissoniopsis cheiranthifolia) 经过实验将其迁移到其范围之外,在10代后没有表现出适应性. 在新的息地持续存在可能不需要适应,从而促进气候变化应对.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 植物科学 植物科学
背景情况:
- 物种范围的变化对于适应气候变化至关重要.
- 沿海沙丘植物 (Camissoniopsis cheiranthifolia) 用于研究适应新息地.
- 之前的研究表明高适应性,但在超越范围的移植中延迟了繁殖.
研究的目的:
- 在C. cheiranthifolia的实验种群中测试适应范围以外的条件.
- 调查遗传变异和环境异质性是否推动了适应.
- 为了确定是否适应是必要的在新环境中持续存在.
主要方法:
- 2005年,C. cheiranthifolia的实验种群被移植到极向范围的范围内和之外.
- 来自范围之外和范围内的种群的后代 (经过10代) 被移植到多个地点.
- 在不同地点评估了适应性和生殖时间.
主要成果:
- 来自超越范围的人群中的个人在超越范围的地点没有表现出增加的健康状况,表明没有适应.
- 超越范围的后代在本地范围内没有受到减弱的健康.
- 生殖延迟到超出了范围,但这并没有受到更强烈的青,后代的时间并没有不同.
结论:
- 适应范围之外的环境在10代后没有被检测出来.
- 在新息地持续存在可能不需要适应.
- 缺乏适应性可能会促进物种在应对气候变化的快速变迁.
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