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地理和发育可塑性形状黄金星的幼虫后热耐受性 Botryllus schlosserieri

Zachary Tobias¹, Andrew Solow², Carolyn Tepolt³

¹MIT-WHOI Joint Program in Oceanography/Applied Ocean Science and Engineering, Cambridge and Woods Hole, MA, USA; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA; Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.

Journal of thermal biology

|December 10, 2023

概括

更温暖的Botryllus schlosseri种群由于局部适应和发育可塑性而表现出更高的耐热性. 变化的环境中的种群表现出更大的可塑性,有助于适应气候变化.

科学领域:

生态生态学生态生态学
进化生物学进化生物学
生理学生理学生理学

背景情况:

生物通过局部适应和表型可塑性适应温度变化.
这些过程影响热耐受性,并可能导致地理临界线.
预计在可变环境中的种群会表现出更大的可塑性.

研究的目的:

研究Botryllus schlosseri.热耐性的局部适应性和发育性可塑性.
沿着一个度梯度,在不同种群中比较热耐受性.
确定可塑性本身是否在本地适应.

主要方法:

在北北大西洋的4.4度度梯度上,比较了五个Botryllus schlosseri种群的热耐受性.
评估后幼虫温度耐受性和热耐受性的发育可塑性 (LT50).
与环境温度变化相关的可塑性水平.

主要成果:

较温暖的南方种群表现出更高的幼虫后温度耐受性 (增加了0.2°C).
Botryllus schlosseri表现出显著的发育可塑性,LT50在环境变化1°C时增加高达0.18°C.
经历较大的短期温度变化的人群表现出更高的发育可塑性,这表明可塑性的局部适应.

结论:

地理和发育性可塑性塑造了Botryllus schlosseri.中的热耐受性.
发育性可塑性的局部适应发生在对环境变化的反应中.
这些发现有助于了解物种在新环境和气候变化下的热生理调整.

关键词:

发展性可塑性发展性可塑性侵入性物种是一种入侵性物种.长达50年) 的时间.当地适应当地适应热耐受性热耐受性突尼西亚人的衣服.

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