鱼体温因气候变化而发生的变化会影响其行为和表现
Kaitlin E Barham1, Céline H Frère1, Ross G Dwyer2
1School of the Environment, The University of Queensland, Brisbane, QLD 4072, Australia.
Current biology : CB
|February 13, 2025
概括
全球气温上升正在影响河口鱼 (Crocodylus porosus). 它们的体温正在上升,导致潜水时间缩短,当它们接近临界热极限时,它们的冷却行为更加活跃.
科学领域:
- 气候变化生物学
- 类学 类学 类学
- 生理生态生态学生理生态学
背景情况:
- 人为气候变化正在增加全球能源,破坏天气模式并导致极端温度.
- 预计厄尔尼诺南部振荡 (ENSO) 的变化率将增加,影响可预测的气候变化.
- 外热生物和鱼一样,对环境温度很敏感,这会影响它们的行为和表现.
研究的目的:
- 研究环境温度上升如何影响自由活动的河口鱼 (Crocodylus porosus) 的体温 (Tb) 和潜水行为.
- 了解鱼对气候引起的温度波动的生理和行为反应.
- 评估鱼在临界极限附近对热应激的易感性.
主要方法:
- 在15年内 (2008-2023) 监测203只自由活动的河口鱼的体温 (Tb) 和潜水活动.
- 将鱼Tb和行为与长期空气温度趋势和ENSO周期相关联.
- 分析环境温度,Tb,潜水时间和主动冷却行为之间的关系.
主要成果:
- 自2008年以来,鱼结核病与空气温度上升的相关性有所增加.
- 鱼在临界温度极限 (32°C-33°C) 附近经历的天数更多.
- 温度升高导致潜水时间缩短,活动冷却行为升高.
结论:
- 河口鱼容易受到气候变化带来的多年环境温度波动.
- 目前的行为表明,鱼正在接近其生理热极限.
- 未来预测的温度上升对鱼种群的长期影响仍然不确定.
相关概念视频
Factors Affecting Body Temperature
3.7K
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:
Factors may include:
3.7K
Responses to Heat and Cold Stress
13.3K
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.
13.3K
Requirements for Human Life
7.6K
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...
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...
7.6K
Body Temperature
862
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
862
Predator-Prey Interactions
16.1K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
16.1K
Adaptations that Reduce Water Loss
25.1K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.1K


