湿度改变了昆虫宿主-寄生虫相互作用中的特定物种和年龄相关的热应激效应
Dongbo Li1, Benjamin Brough1, Jasper W Rees1
1School of Biology, Faculty of Biological Sciences University of Leeds Leeds UK.
Ecology and evolution
|July 22, 2024
概括
湿度显著改变了昆虫对热应激的反应,影响了宿主-寄生虫相互作用和种群动态. 了解这些气候变化压力因素的组合对于预测生态影响至关重要.
科学领域:
- 生态生态学 生态生态学
- 气候变化生物学 气候变化生物学
- 昆虫生态学 昆虫生态学
背景情况:
- 气候变化正在增加极端高温事件和湿度.
- 热量和湿度压力对物种相互作用的综合影响尚不清楚.
- 昆虫宿主-寄生虫系统对环境变化敏感.
研究的目的:
- 研究湿度如何调节热应激对昆虫生命史特征的影响.
- 检查宿主-寄生虫系统中热应激持续时间和湿度之间的相互作用.
- 确定物种对联合压力因素的特定反应.
主要方法:
- 使用的印度面粉 (Plodia interpunctella) 和它的寄生虫 (Venturia canescens).
- 暴露宿主在28°C的高 (60.8%RH) 或低 (32.5%RH) 湿度下.
- 在第4或第5个幼虫阶段,在0,6或72小时内施加38°C的热应力.
主要成果:
- 热应激持续时间在第四阶段应用时减少了寄生虫的出现,无论湿度如何.
- 在第五阶段,热应激降低了寄生虫的出现,只有在低湿度下.
- 湿度改变了宿主发育时间,体型和寄生虫体型,以应对热应激.
结论:
- 湿度显著改变宿主寄生虫对热应激的反应.
- 特定物种的影响突出显示了湿度在调节相互作用中的重要性.
- 在气候变化研究中必须考虑结合的环境压力因素.
相关概念视频
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
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
Frequency-dependent Selection
22.0K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
22.0K
Osmoregulation in Insects
16.2K
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
16.2K
Factors Affecting Body Temperature
4.0K
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:
4.0K


