相关实验视频
Updated: Jul 2, 2025
06:58
High-Throughput Assays of Critical Thermal Limits in Insects
Published on: June 15, 2020
5.2K
短期热浪对全环虫的控制效应
Cirui Wu1, Dailin Liu1, Chengxu Gu1
1College of Plant Protection, Northeast Agricultural University, Harbin 150030, China.
Insects
|February 23, 2024
概括
35°C的短期热浪会对大豆 (Aphis glycines) 的发展和繁殖产生负面影响. 这表明热浪可能是对这种重要的大豆害虫的有用控制策略.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 虫害管理 虫害管理 虫害管理
- 气候变化的影响 气候变化的影响
背景情况:
- 豆 (Aphis glycines) 是影响大豆生产的一种主要害虫.
- 中国的哈尔经历了气温上升和频繁的热浪,影响了农业害虫.
- 了解害虫对热应激的反应对于有效的作物管理至关重要.
研究的目的:
- 研究短期热浪 (35°C) 对大豆虫发育,繁殖和形态差异化的影响.
- 评估不同发育阶段的热暴露对Aphis glycines的影响.
- 在不断变化的气候条件下,为预测大豆虫种群动态提供信息.
主要方法:
- 豆被暴露在35°C的白天温度下,持续7天,从各种的阶段 (第1到第4阶段) 开始.
- 测量了发育时间,寿命,体型,生殖产量 (生育能力) 和内在增长率.
- 在第13天分析了后代的性别比率 (女性和男性).
主要成果:
- 暴露于35°C的热浪延长了的寿命,但缩短了成年人的寿命和总寿命.
- 与对照组 (25°C) 相比,受热压力的虫体型较小,生殖周期缩短,生育能力较低,内在增长率较小.
- 不同阶段的热暴露影响了 gynoparae 和男性后代的比例.
结论:
- 35°C的短期热浪会抑制大豆虫的生长和繁殖.
- 热应激可以改变形态分化,影响后代的性别比率.
- 这些发现表明,热浪可能作为大豆田中的阿菲斯甘氨酸的自然控制机制.
相关概念视频
02:45Responses to Heat and Cold Stress
13.5K
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.
13.5K
01:25Increased Body Temperature
669
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...
669
01:26Requirements for Human Life
8.2K
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...
8.2K
01:19Homeostatic Imbalances in Body Temperature
124
Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...
124