大量营养素的平衡决定了甲虫Tenebrio molitor的寿命和繁殖
Myung Suk Rho1, Kwang Pum Lee1
1Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
The Journal of experimental biology
|June 3, 2025
概括
虫甲虫表明,蛋白质和碳水化合物摄入量显著影响寿命和生殖能力. 均衡的饮食 (蛋白质与碳水化合物的比例为1) 支持寿命延长和高生殖能力.
科学领域:
- 昆虫生理学 昆虫生理学
- 营养生态学 营养生态学
- 老年学是一门学科.
背景情况:
- 大量营养素极大地影响昆虫的寿命和繁殖,调节健康的权衡.
- 甲虫是最多样化的昆虫类,缺乏对营养对寿命和繁殖的影响的全面研究.
- 了解这些影响对于昆虫生物学和害虫管理至关重要.
研究的目的:
- 为了研究不同蛋白质 (P) 和碳水化合物 (C) 的比例和度对虫甲虫虫的寿命和繁殖的影响, *Tenebrio molitor*.
- 为了阐明这种甲虫物种的寿命和繁殖之间的营养介导的权衡.
- 为了确定最佳的饮食条件,同时延长寿命和繁殖成功.
主要方法:
- 使用营养景观方法,使用35种化学定义的饮食,其P:C比和总P+C度各不相同.
- 在 *Tenebrio molitor* 中监测死亡时间,最后一次繁殖,卵产量和P:C摄入量.
- 对P:C比率的评估甲虫食物选择偏好.
主要成果:
- 寿命和生殖特征都随着热量摄入量增加而增加,但在不同的P:C比率下达到顶峰.
- 与寿命最大化 (1:1.36 到 1:1.38) 相比,女性的生殖能力在较高的P:C比率 (1:1.06 到 1.75:1) 中得到最大化.
- *Tenebrio molitor*在选择时选择了1:1的P:C比,有效地平衡了寿命和繁殖.
结论:
- 在 * Tenebrio molitor * 中,寿命和繁殖之间存在着明显的营养介导的权衡,尽管不如其他昆虫模型那么明显.
- 均衡的P:C比率约为1:1是最大限度地延长粉虫甲虫的寿命和生殖产量的最佳.
- 结果提供了关于昆虫营养需求和生命历史策略的演变的见解.
相关概念视频
Energy Budgets
9.7K
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
9.7K
Oxygen Requirements and Growth Patterns
291
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
291
Microbial Nutrition
385
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
385
Metabolic Rate
526
The human body is a powerhouse of energy, with every cell performing numerous functions that require energy. This energy production and consumption is measured by the metabolic rate, which quantifies the total heat generated by all the body's chemical reactions and mechanical work. This measurement helps to determine the rate of kilocalorie (kcal) consumption needed to fuel all ongoing activities.
The Basal Metabolic Rate (BMR) measures the energy expended at rest.
Several factors influence...
The Basal Metabolic Rate (BMR) measures the energy expended at rest.
Several factors influence...
526


