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在两个淡水生态热体中,临界热最大值 (CT_max) 在不同环境中的重复性

Samuel D Chasse¹, Erin M C Stewart², Graham D Raby³

¹Department of Biology, Trent University, Peterborough, ON, K9J 1Z8, Canada.

Journal of thermal biology

|January 18, 2025

概括

在水生生态中,临界热最大值 (CT_max) 的重复性取决于环境. 这项研究在南瓜鱼中发现了中度的重复性,但在生的鱼中重复性很低,突出了分类系统特定的差异.

科学领域:

生态学和进化生物学
生理生态生态学生理生态学
水生湿热生物生理学水生湿热生物生理学

背景情况:

临界热最大值 (CT_max) 是一个关键的指标,用于在ectotherms上热极限.
CT_max可重复性通常被认为是一种持久的,可遗传的特征,对于推断适应潜力至关重要.
有限的研究存在于CT_max在水生生态中重复性,特别是在不同的环境环境中.

研究的目的:

为了研究CT_max在两个淡水生态热生物中的跨语境重复性:生 (Faxonius rusticus) 和南瓜种子 (Lepomis gibbosus).
要确定CT_max的重复性是否在物种之间以及在不同适应条件下有所不同.

主要方法:

在多个试验中,重复测量CT_max在个体和南瓜种子中.
在试验中不同适应温度,氧和和盐度,以评估跨背景重复性.
使用统计方法分析重复性,以考虑物种和上下文依赖性.

主要成果:

适应温度是影响CT_max的主要因素.
黄瓜种子表现出中度的重复性 (约. 0.4) 在不同背景下,与以前的鱼类研究保持一致.
腐蚀的鱼的重复性显著降低 (大约1. 0.16),表明更大的上下文依赖.

结论:

CT_max重复性不是一个普遍一致的特征;它受到物种和环境环境的影响.
这些发现挑战了CT_max作为一贯重复的特征的假设,以推断遗传性和适应性.
为了全面了解热极限的重复性,对各种水生种类和环境进行进一步的研究至关重要.

关键词:

动物个性动物个性水生生物学水生生物学 CT (分钟) 的时间.塑性是一种可塑性.热生物学的热生物学热耐受性热耐受性

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