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相关概念视频

Patterns of Fever01:26

Patterns of Fever

Before understanding the types and patterns of fever, it is essential to know its phases.
Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
Increased Body Temperature01:25

Increased Body Temperature

A body temperature above  38°C  (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in response to an infection or illness.
Homeostatic Imbalances in Body Temperature01:19

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相关实验视频

Updated: May 9, 2026

Determining Temperature Preference of Mosquitoes and Other Ectotherms
05:31

Determining Temperature Preference of Mosquitoes and Other Ectotherms

Published on: September 28, 2022

由温度驱动的系统稳定性变化引起的反复发生的昆虫爆发.

William A Nelson1, Ottar N Bjørnstad, Takehiko Yamanaka

  • 1Department of Biology, Queen's University, Kingston, Ontario, Canada. nelsonw@queensu.ca

Science (New York, N.Y.)
|August 3, 2013
PubMed
概括
此摘要是机器生成的。

温度变化导致昆虫种群的爆发. 春季气温上升超过15°C会引发茶疫情,而秋季气温下降会导致疫情停止,揭示了温度稳定性的联系.

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Published on: September 28, 2022

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科学领域:

  • 生态生态学 生态生态学
  • 昆虫学 昆虫学是一门学科.
  • 数学生物学 数学生物学

背景情况:

  • 昆虫种群动态经常表现出周期性爆发,但根本机制尚未完全理解.
  • 确定这些人口波动的具体驱动因素对于生态和农业管理至关重要.
  • 茶叶虫 (Adoxophyes honmai) 是一种以其爆发模式而闻名的害虫物种.

研究的目的:

  • 为了阐明茶叶 Adoxophyes honmai. 的种群爆发背后的因果机制.
  • 研究温度在调节昆虫种群稳定性和周期动态中的作用.
  • 将经验观测与人口周期的理论预测联系起来.

主要方法:

  • 分析了51年时间序列数据的茶叶虫疫情的分析.
  • 波形分析的应用,以确定时间模式和值.
  • 开发和参数化模拟昆虫种群动态的数学模型.
  • 将模型预测与观察数据进行比较,以验证发现.

主要成果:

  • 确定了15°C的明显温度值,在春季超过该值时,疫情的幅度会增加.
  • 随着气温在秋季下降,观察到疫情的温度依赖性分离.
  • 波形分析揭示了与季节性温度变化相关的明显模式.
  • 数学模型准确地预测了随着温度的增加,从稳定变化到循环动态 (霍夫分叉) 的过渡.

结论:

  • 系统稳定的温度驱动的变化是解释茶叶菌中爆发周期的关键因素.
  • 这些发现为多伏特昆虫的生长周期提供了机制性的解释.
  • 这项研究强调了气候变量对昆虫种群动态和疫情潜力的重大影响.