捕食者的进化如何抵御致命或次致命的毒性作用会影响离散时间捕食者-猎物系统的动态
Azmy S Ackleh1, Neerob Basak1, Amy Veprauskas1
1University of Louisiana, Lafayette, LA, USA.
Journal of biological dynamics
|December 20, 2025
概括
捕食者的进化可以帮助对抗有毒物质的生存. 然而,致命的毒性效应与进化相结合,可能会导致捕食者灭绝,创造出替代的稳定状态.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 数学生物学 数学生物学
背景情况:
- 捕食者-猎物模型对于理解人口动态至关重要.
- 有毒物质可以显著影响捕食者种群.
- 进化对环境压力的反应,如有毒物质,可以改变生态相互作用.
研究的目的:
- 扩展现有的捕食者-猎物模型,包括捕食者毒素耐药性的演变.
- 分析致死性,次致死性和混合毒性对掠食者生存和种群持续性的影响.
- 研究进化适应如何影响生态稳定性和潜在的替代稳定状态.
主要方法:
- 捕食者-猎物动态的数学建模与进化适应.
- 导出模型平衡存在和稳定的条件.
- 数值分析以探索不同毒性效应场景下的系统动态.
- 在有毒物质暴露和进化压力下分析系统持久性.
主要成果:
- 捕食者的进化可以赋予对有毒物质的耐药性,从而有可能防止灭绝.
- 致命的毒剂效应加上捕食者进化可以导致多个边界平衡和替代的稳定状态.
- 在某些情况下,进化的适应致死性毒素可能会导致捕食者灭绝,而非进化的群体生存下来.
- 还分析了次致命和混合效应,以了解它们对人口动态的影响.
结论:
- 对有毒物质的进化适应在捕食者-猎物系统中呈现出复杂的动态.
- 毒素耐药性演变的结果严重取决于毒素作用的类型 (致死性或亚致死性).
- 进化过程可能会破坏生态系统的稳定,导致诸如灭绝或替代稳定状态等意想不到的结果,这凸显了考虑共同进化动态的重要性.
关键词:
37N2525 37N25 这是一个很大的问题.39A3030 其他 其他39A6060 39A6060 39A6060 39A6060 39A6060 39A6060 39A6060 39A6060 39A6060 39A6060 39A6060 39A60 39A60 39A60 39A60 39A60 39A60 39A60 39A60 39A60 39A60 39A60 39A60 39A92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B05 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B09 92B10 这是一个非常重要的时间92D2525 在线观看92D4040 92D4040 92D4040 92D4040 92D4040 92D4040 92D4040 92D40达尔文主义的动力学离散时间捕食者-猎物模型.进化游戏理论的演化游戏理论.持续性 持久性稳定性分析分析 稳定性分析更多相关视频
10:20Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
Published on: March 12, 2013
13.9K
16:03A Fish-feeding Laboratory Bioassay to Assess the Antipredatory Activity of Secondary Metabolites from the Tissues of Marine Organisms
Published on: January 11, 2015
9.9K
相关概念视频
Predator-Prey Interactions
21.0K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
21.0K
Frequency-dependent Selection
23.0K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
23.0K
Limits to Natural Selection
33.9K
Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.
33.9K
Types of Selection
43.7K
Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
43.7K
Conservation of Small Populations
16.6K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
16.6K
Parameters Affecting Nonlinear Elimination: Zero-Order Input, First-Order Absorption and Two-Compartment Model
269
Drugs administered through various routes can lead to nonlinear elimination, resulting in complex pharmacokinetic behaviors crucial to understanding efficacious drug dosing.
When a drug is administered through a constant intravenous infusion and eliminated via nonlinear pharmacokinetics, it follows zero-order input. For example, oral drugs undergo first-order absorption upon administration and are eliminated through nonlinear pharmacokinetics.
In the case of subcutaneously administered drugs,...
When a drug is administered through a constant intravenous infusion and eliminated via nonlinear pharmacokinetics, it follows zero-order input. For example, oral drugs undergo first-order absorption upon administration and are eliminated through nonlinear pharmacokinetics.
In the case of subcutaneously administered drugs,...
269
