相关实验视频

Updated: Apr 30, 2026

A Noninvasive Hair Sampling Technique to Obtain High Quality DNA from Elusive Small Mammals

A Noninvasive Hair Sampling Technique to Obtain High Quality DNA from Elusive Small Mammals

Published on: March 13, 2011

在三种被捕的大型哺乳动物中,表观遗传钟,性别标记和年龄类诊断

Natalie Czajka¹, Joseph M Northrup^1,2, Meaghan J Jones³

¹Department of Environmental Life Sciences Graduate Program, Trent University, Peterborough, Ontario, Canada.

Molecular ecology resources

|March 30, 2024

概括

研究人员为白尾鹿,黑熊和山山羊开发了基于DNA甲基化的表观遗传钟. 这些时钟准确地估计了自由活动的哺乳动物的年龄,有助于野生动物管理和监测工作.

科学领域:

野生动物生物学野生动物生物学
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.
哺乳动物研究的研究.

背景情况:

基于DNA甲基化的表观遗传时钟是估计野生种群年龄的新兴工具.
准确的年龄确定对于有效的野生动物管理和人口研究至关重要.

研究的目的:

开发和验证北美三种大型哺乳动物的表观遗传钟:白尾鹿,黑熊和山山羊.
确定特定的DNA甲基化位点 (CpG),可以作为这些物种中年龄和性别的诊断标记.

主要方法:

收集了49只黑熊,47只白尾鹿和45只山山山羊的组织样本.
在三种物种的3万多个CPG位点量化了DNA甲基化模式.
利用处罚回归 (弹性网) 来构建预测年龄的表观遗传时钟模型.

主要成果:

开发出高精度的表观遗传钟,具有高的解释能力 (R值在0.95到0.99) 和低的错误率 (MAE从0.29到1.33).
确定了特定的CpG位点,显示出每个物种中与年龄和性别相关的显著甲基化差异.
在各种哺乳动物种群中验证了开发的表观遗传钟的稳定性和准确性.

结论:

表观遗传钟提供了一种可靠的方法来估计管理野生动物种群的年龄.
这些时钟可以成为野生动物监测的宝贵工具,有助于更好地了解人口年龄结构.
已识别的诊断标记为野生动物研究中的年龄和性别确定提供了可访问的方法.

关键词:

年龄化的衰老.甲基化处理的方法人口遗传学人口遗传学野生动物管理野生动物管理

更多相关视频

Accurate and Phenol Free DNA Sexing of Day 30 Porcine Embryos by PCR

Accurate and Phenol Free DNA Sexing of Day 30 Porcine Embryos by PCR

Published on: February 14, 2016

Protocol for Assessing the Relative Effects of Environment and Genetics on Antler and Body Growth for a Long-lived Cervid

Protocol for Assessing the Relative Effects of Environment and Genetics on Antler and Body Growth for a Long-lived Cervid

Published on: August 8, 2017

相关概念视频

Mate Choice

Mate Choice

Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.

The Ratio of X Chromosome to Autosomes

The Ratio of X Chromosome to Autosomes

In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...

Methods of Classification and Identification

Methods of Classification and Identification

Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...