蓝尾皮的尾巴的色彩变化 (蓝尾皮的尾巴的色彩变化)
Chen Yang1,2, Siheng Chen3, Jie Wang2
1Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station Southwest Minzu University Chenghu China.
Ecology and evolution
|June 8, 2023
概括
这项研究使用光谱测量追踪了从出生到成熟的蓝尾尾色变化. 我们发现颜色变化与生长相关,并在两性之间存在差异,为爬行动物本体遗传色彩变化提供了洞察力.
科学领域:
- 进化生物学 进化生物学
- 类学 类学 类学 类学
- 动物染色 动物染色
背景情况:
- 体质变色是动物的一个关键的进化现象.
- 在整个动物生命周期中量化持续的颜色变化是一个重大挑战.
- 了解这些变化可以揭示进化适应和性选择的洞察力.
研究的目的:
- 量化测量和分析蓝尾 (Plestiodon elegans) 尾巴颜色变化的本体遗传.
- 调查尾巴颜色变化的节奏和从出生到性成熟的性二色素的存在.
- 为未来研究爬行动物颜色变化的驱动因素建立基准.
主要方法:
- 用光谱测量测量了蓝尾皮 (Plestiodon elegans) 整个生命周期的尾巴颜色.
- 实验室颜色空间 (L*,a*,b*值) 用于准确和依赖观察者的颜色评估.
- 从出生到性成熟的时间进行测量,以捕捉发育变化.
主要成果:
- 在颜色指数 (L*,a*,b*) 和皮肤的生长期之间发现了显著的相关性.
- 尾巴颜色发光度从青少年到成年阶段在雄性和雌性skinks下降.
- 两性之间观察到颜色变化模式 (节律) 的明显差异,可能与行为策略有关.
结论:
- 这项研究提供了连续的,定量数据,关于尾巴颜色的进化在蓝尾皮肤在ontogeny期间.
- 这项研究强调了色彩变化节奏的基于性别的差异,这表明了性选择或行为的潜在作用.
- 这些发现为未来对体遗传变色和性双色色的机制的研究提供了宝贵的参考.
相关概念视频
Speciation Rates
21.3K
Overview
21.3K
Background and Environment Affect Phenotype
6.6K
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...
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...
6.6K
Epistasis
47.0K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
47.0K
Changes in Skin Color: Clinical Perspectives
2.0K
The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
2.0K
Gene Duplication and Divergence
6.2K
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
6.2K
Position-effect Variegation
6.4K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.4K


