对气候变暖对蓝鱼本土和非本土种群的影响的生理学信息预测
Vaskar Nepal1, Maggie Dillon2, Mary C Fabrizio2
1Virginia Institute of Marine Science, William & Mary, 1370 Greate Rd, Gloucester Point, VA 23062, USA; Department of Biological Sciences, Western Illinois University, 1 University Circle, Macomb, IL 61455, USA.
Journal of thermal biology
|August 25, 2024
概括
蓝鱼 (Ictalurus furcatus) 的热性能对其成功至关重要,其最佳代谢范围在29°C左右. 气候变化可能会限制南部种群,但有利于北方非本土蓝鱼.
科学领域:
- 水生生态学 水生生态学
- 鱼类生理学 鱼类生理学
- 气候变化生物学 气候变化生物学
背景情况:
- 蓝鱼 (Ictalurus furcatus) 是广泛引入的娱乐渔业.
- 了解它们的热性能对于预测成功至关重要,特别是在气候变化方面.
研究的目的:
- 为了研究蓝鱼的热性能和代谢反应.
- 预测气候变暖将如何影响美国各地的蓝鱼种群.
主要方法:
- 实验室实验使野生捕获的蓝鱼暴露在7°C至38°C的温度下.
- 测量代谢率,食物消耗和身体状况.
- 根据当前和未来的气候场景,模拟蓝鱼的表现.
主要成果:
- 蓝鱼具有较低的标准代谢率和高的耐热性,可在38°C高温下生存.
- 代谢范围在29.1°C达到峰值,消费在32°C达到峰值,身体状况在32°C以上下降.
- 预计气候变暖将减少美国南部的适合息地,但将在北部地区扩大.
结论:
- 蓝鱼具有生理特征,使其能够在不同的热条件下生存.
- 气候变化对南部人口构成风险,因为温度超过最佳值,而北部人口可能会从变暖中受益.
- 热性能数据对于在不断变化的环境条件下管理蓝鱼渔业至关重要.
相关概念视频
Global Climate Change
24.3K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.3K
Testing a Claim about Mean: Known Population SD
2.7K
A complete procedure of testing the hypothesis about a population mean is explained here.
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...
2.7K
Background and Environment Affect Phenotype
6.5K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.5K
Adaptations that Reduce Water Loss
25.2K
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.
25.2K
Osmoregulation in Fishes
49.4K
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
49.4K
Responses to Heat and Cold Stress
13.4K
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.
13.4K


