相关实验视频
Updated: Jun 10, 2025

07:16
Thermal Limits Determination for Zooplankton Using a Heat Block
Published on: November 18, 2022
1.3K
极端的温度降低了copepod的表现,并改变了内部微生物群的相对丰富性
Quyen D H Vu1, Linh P Pham2, Oanh T Truong1
1Institute for Biotechnology and Environment, Nha Trang University Nha Trang City Vietnam.
Ecology and evolution
|October 14, 2024
概括
海洋变暖对海洋足有影响,它们对食物网至关重要. 这项研究揭示了它们的内部微生物组如何随温度变化而变化,从而影响生存和繁殖. 了解这些微生物变化是预测海洋生态系统对气候变化的反应的关键.
科学领域:
- 海洋生物学 海洋生物学
- 微生物生态学 微生物生态学
- 气候变化科学 气候变化科学
背景情况:
- 足动物是大量的海洋无脊椎动物,也是重要的食物来源.
- 脚动物对海洋温度上升很敏感.
- 内部微生物群对足动物热耐受性的影响尚不清楚.
研究的目的:
- 为了研究温度升高如何影响热带足 *Acartia* sp. 的生命历史特征.
- 在热应力下分析足动物内部微生物组合的变化.
- 为了将微生物组的变化与在变暖条件下足的表现联系起来.
主要方法:
- 评估了 *Acartia* sp. 的生存,发育和繁殖. 在26°C,30°C和34°C的温度下.
- 使用高通量16S rRNA基因测序分析了内部微生物组.
- 量化操作分类单位 (OTU) 和微生物群落组成.
主要成果:
- 科佩波德的表现在30°C时达到顶峰,在34°C时生长,生存和繁殖减少.
- 变暖并没有改变OTU丰富度或生物多样性指数.
- 观察到蛋白质细菌,活性细菌和细菌杆菌的相对丰度发生显著变化,热友细菌在极端温度下增加.
结论:
- 升高的温度显著改变了Acartia sp. 的内部微生物群.
- 特定细菌系的变化,如蛋白质细菌和细菌杆菌,可能解释了在热应激下减少的copepod性能.
- 了解这些微生物动态对于预测气候变化对海洋无脊椎动物的影响至关重要.
相关概念视频
Factors Influencing Microbial Growth: Temperature
1
Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
1
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
Diversity of Archaea I
2
Archaea, a domain of single-celled microorganisms, are classified into five major phyla based on genetic and biochemical characteristics: Euryarchaeota, Crenarchaeota, Thaumarchaeota, Korarchaeota, and Nanoarchaeota. Among these, the phylum Euryarchaeota is notable for its remarkable diversity in morphology, metabolism, and ecological adaptations.Morphological and Metabolic DiversityMembers of Euryarchaeota exhibit a variety of cellular shapes, including rods and cocci. Their metabolic pathways...
2
Factors Influencing Microbial Growth: Osmolarity
1
Osmolarity is the measure of solute concentration in a solution. It plays a critical role in determining water availability for organisms. Water moves across semipermeable membranes through osmosis, flowing from regions of lower solute concentration (more dilute) to regions of higher solute concentration (more concentrated).In high-solute environments, microbial cells lose water, leading to dehydration and inhibited growth. The extent to which water is available to microbes in such environments...
1
Physical Methods for Controlling Microbial Growth: Temperature
1
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
1
Factors Affecting Body Temperature
3.9K
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:
3.9K

