相关实验视频

Updated: Jul 10, 2025

Thermal Limits Determination for Zooplankton Using a Heat Block

Thermal Limits Determination for Zooplankton Using a Heat Block

Published on: November 18, 2022

野生的白帽睡着的人在激烈的情况下保持冷静

John A Lesku¹, Robert G Barker², Hannah Elmes²

¹School of Agriculture, Biomedicine and Environment, La Trobe University, Melbourne, Australia; Research Centre for Future Landscapes, La Trobe University, Melbourne, Australia.

Journal of thermal biology

|November 24, 2023

概括

尽管存在热应激风险,但鸟类还是会晒太阳. 白帽使用它们的白色头部羽毛保持凉爽,可能允许更长的日照时间来控制寄生虫.

科学领域:

鸟类生物学鸟类生物学
热调节热调节热调节热调节
行为生态学行为生态学

背景情况:

阳行为在鸟类中很普遍,但可能导致热应激和大脑功能受损.
鸟类可能拥有在晒太阳时选择性地冷却它们的大脑的机制.
潜在的冷却机制包括生理适应或被动特征,如羽毛颜色.

研究的目的:

为了研究白顶在晒太阳时的温度调节策略.
为了确定羽毛颜色是否在这些海鸟的脑冷却中起作用.

主要方法:

红外热谱被用来测量野生的白顶的表面温度,而日照.
对比了白色帽子和黑色背部的热谱.
热成像也在死去的鸟类上进行,以评估色彩与生理学的作用.

主要成果:

阳光照耀着白顶的的白色帽子比黑色的背部凉爽20°C.
这种热差在死去的鸟类中持续存在,表明这是由于二色色彩的变色.
这些发现表明羽毛,而不是生理,驱动着帽子的较低温度.

结论:

白帽的色彩可能有助于在阳光照射期间的脑冷却.
这种适应可能允许长时间的晒太阳,这可能有助于对寄生虫的控制.
通过羽毛颜色的被动温度调节是鸟类行为的一个重要因素.

关键词:

颜色颜色颜色颜色颜色二色彩主义 (dichromatism) 是一种二色彩主义.红外热像图 (Infrared Thermography) 是一种红外热像图.在日光浴中浴.热调节热调节热调节热调节热带地区热带地区

更多相关视频

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

High-Throughput Assays of Critical Thermal Limits in Insects

High-Throughput Assays of Critical Thermal Limits in Insects

Published on: June 15, 2020

相关概念视频

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.

Requirements for Human Life

Requirements for Human Life

The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...

Factors Affecting Body Temperature

Factors Affecting Body Temperature

As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:

Speciation Rates

Speciation Rates