相关实验视频

Updated: Jun 1, 2025

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

种群基因组学揭示了与温度变化相关的局部适应在两种河流青物种:对气候变暖脆弱性的影响

Brenna R Forester¹, Amanda S Cicchino^1,2, Alisha A Shah¹

¹Department of Biology, Colorado State University, Fort Collins, Colorado, USA.

Molecular ecology

|January 18, 2025

概括

基因组数据揭示了河对温度的局部适应,突出了它们的进化潜力. 这项研究有助于确定最容易受到气候变化的人口,这对保护工作至关重要.

科学领域:

生态生态学生态生态学
进化生物学进化生物学
保护遗传学保护遗传学

背景情况:

气候变化脆弱性评估通常集中在物种上,忽视了关键的物种内变异.
暴露,敏感性和适应能力的内部特异性差异显著影响脆弱性.
基因组数据提供了一种强大的工具,用于识别本地适应和人口水平的变化.

研究的目的:

调查当地适应温度和两个溪物种Ascaphus truei和A. montanus*的热耐受性的遗传基础.
通过基因组和生理学数据评估气候变化脆弱性的内属变异.

主要方法:

从温度梯度沿线的多个地点对子进行全基因组再测序.
为*Ascaphus truei*开发了第一个注释参考基因组.
针对两种物种在扩大地理范围的目标捕获测序.

主要成果:

在 *A. montanus* (基因组和生理学数据) 和 *A. truei* (基因组数据) 中发现了局部适应温度的证据.
在所有种群中观察到类似的热敏感度水平,但在更温暖的流中,A. truei可能更容易受到伤害.
根据基因组和生理学指标,这两种物种都有很高的进化潜力.

结论:

基因组方法对于确定物种内部气候变化脆弱性的空间模式是有价值的.
了解物种内变异对于面对气候变化的有效保护规划至关重要.
为了进行全面的脆弱性评估,需要进一步整合基因组和生理数据.

关键词:

这就是阿斯卡斯 (Ascaphus Ascaphus) 的名字.在CTmax中,CTmax为CTmax.两动物两动物进化的适应能力.景观基因组学是景观的基因组学.灵敏度灵敏度灵敏度灵敏度灵敏度

更多相关视频

An Experimental and Bioinformatics Protocol for RNA-seq Analyses of Photoperiodic Diapause in the Asian Tiger Mosquito, Aedes albopictus

An Experimental and Bioinformatics Protocol for RNA-seq Analyses of Photoperiodic Diapause in the Asian Tiger Mosquito, Aedes albopictus

Published on: November 30, 2014

Determining Temperature Preference of Mosquitoes and Other Ectotherms

Determining Temperature Preference of Mosquitoes and Other Ectotherms

Published on: September 28, 2022

相关概念视频

Speciation Rates

Speciation Rates

Background and Environment Affect Phenotype

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

Gene Flow

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.

Mutation, Gene Flow, and Genetic Drift

Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).

Genetic Drift

Genetic Drift

Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.

What is Population Genetics?

What is Population Genetics?

A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.