相关实验视频

Updated: Jun 24, 2025

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

Published on: August 22, 2018

难民区的共同进化是否会导致大黄蜂的模仿行为? 来自南亚模仿小组的见解

Jixiang Cui^1,2, Yuxin Chen^1,2, Heather M Hines³

¹Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China.

Science advances

|June 12, 2024

概括

蜂群中穆勒的模仿是复杂的. 基因组数据揭示了地理结构,而不是颜色模式,这表明基因流维持模仿性而没有遗传分歧. 这挑战了简单的冰川避难所共同进化的模型.

科学领域:

进化生物学进化生物学
人口遗传学人口遗传学
行为生态学行为生态学

背景情况:

据假设,米勒尔模仿性,即令人讨厌的物种共享警告信号,是由孤立的冰川避难所的共同进化引起的.
这种理论缺乏强有力的支持,特别是在蝶模型中,需要在其他系统中进行调查.

研究的目的:

为了测试冰川避难所共进化假设的Müllerian模仿.
为了研究在熊蜂仿真复合体中的仿真多样化背后的种群遗传学.

主要方法:

基因组数据分析以评估人口结构和遗传差异化.
人口分析以推断历史人口规模变化和冰川周期影响.
利基建模用于评估过去冰川时期的息地变化.

主要成果:

熊蜂种群 (Bombus breviceps和Bombus trifasciatus) 显示出地理结构,但通过颜色模式的差异化有限.
有证据表明,在基因流量受限制的区域中,颜色等位基因共享,形成模仿复合体,没有显著的遗传分歧.
人口分析和利基模型表明与冰川周期的不匹配,只有轻微的息地收缩.

结论:

这些发现挑战了 Müllerian模仿的简单的基于庇护所的共同进化模型.
这种大蜂系统中的模拟多样化更复杂,涉及基因流动和潜在的其他进化机制.
在这种情况下,地理隔离似乎不是模仿模式形成的主要驱动因素.

更多相关视频

Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi

Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi

Published on: October 5, 2018

A Push-pull Protocol to Reduce Colonization of Bird Nest Boxes by Honey Bees

A Push-pull Protocol to Reduce Colonization of Bird Nest Boxes by Honey Bees

Published on: September 4, 2016

相关概念视频

Predator-Prey Interactions

Predator-Prey Interactions

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.

Nonconscious Mimicry

Nonconscious Mimicry

Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.

Frequency-dependent Selection

Frequency-dependent Selection

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.

Speciation Rates

Speciation Rates

Convergent Evolution

Convergent Evolution

Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.

Pollination and Flower Structure

Pollination and Flower Structure

Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.