温度影响着熊蜂的抗干燥能力
Jamieson C Botsch1, Jesse D Daniels2, Jelena Bujan3
1North Central Agricultural Research Laboratory, Agricultural Research Service, USDA, Brookings, SD 57006, USA; Oak Ridge Associated Universities, Oak Ridge, TN 37831, USA.
Journal of insect physiology
|May 6, 2024
概括
气候变化增加了昆虫干燥的风险. 熊蜂在较高的温度和较低的湿度下更快地失去水分,并更快地死亡,这凸显了对水资源的需求.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 气候变化生物学 气候变化生物学
- 昆虫生理学 昆虫生理学
背景情况:
- 气候变化正在增加全球气温和干旱频率,对昆虫造成严重的干旱风险.
- 陆地昆虫在避免水损失方面面临挑战,特别是在更高的温度和更低的湿度下.
- 对温度和湿度对昆虫抗干燥能力的相互作用影响的研究是有限的,特别是在生态和经济上重要的蜜蜂物种中.
研究的目的:
- 研究温度和湿度对熊蜂 (Bombus impatiens) 干燥抵抗的相互作用影响.
- 在不同的环境条件下量化水损失率,生存时间和死亡时的水含量.
- 探索熊蜂种群内水平衡特征的物种内变化.
主要方法:
- 对温度 (20, 25, 30°C) 和相对湿度 (<5%, 50%, >95%RH) 的实验性操纵.
- 测量到死亡的时间,水损失率和熊蜂死亡时的水含量.
- 分析水平衡特征的种内特异变化以及个体体积的影响.
主要成果:
- 温度升高和湿度降低显著提高了熊蜂的水损失率.
- 较高的温度减少了熊蜂的生存时间,而较低的湿度降低了死亡时的水含量.
- 在殖民地之间观察到水平衡特征的显著内部特异变化,较大的个体表现出更长的生存期和更大的水损失耐受性.
结论:
- 在预测的气候变化场景下,大黄蜂容易受到增加的水损失和减少的生存率的影响.
- 个体体积对干燥抵抗有影响,这表明在种群中存在差异性生存的潜力.
- 保持获得花蜜资源的机会对于熊蜂的水平衡和在变暖和干燥的气候中生存至关重要.
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
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
Adaptations that Reduce Water Loss
25.5K
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.
25.5K


