来自新热带地区的类,飞类古类鸟类的新谱系和分类
Sara Bertelli1,2,3, Francisca Cunha Almeida4, Norberto P Giannini1,3,5
1Unidad Ejecutora Lillo, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación Miguel Lillo, Miguel Lillo 251, San Miguel de Tucumán, Tucumán, 4000, Argentina.
概括
这项研究修订了新热带锡 (Tinamidae) 的分类,显示出需要进行重大分类结构重组. 关键发现澄清了有效的Tinamus属,需要对几个物种进行重新分配以提高准确性.
科学领域:
- 鸟类系统学和进化生物学
- 新热带鸟类的遗传学和分类学.
- 古代人类进化和多样性.
背景情况:
- 新热带类鸟类家族是最多样化的古类鸟类群体,独特的拥有能够动力飞行的物种.
- 之前对鱼的分类因复杂的分类学历史和某些属名的错误应用而面临挑战.
- 了解Tinamidae内部的遗传关系对于准确的分类和保护工作至关重要.
研究的目的:
- 对所有46种公认的tinamou物种进行全面的遗传学分析.
- 将有效的超特种名称应用于恢复的类型,并在必要时创建新的类型.
- 解决分类学上的模两可,特别是关于Tinamus属及其类型物种.
主要方法:
- 遗传学分析包括所有46个目前公认的tinamou物种.
- 关键的tinamid属和物种名称的分类史的审查和解.
- 遗传学结果的应用,以提出修订后的超特定分类.
主要成果:
- 该分析恢复了传统的子类 (森林居住与开放区域的) 并确定了与当前通用分配的不一致性.
- 1783年,Tinamus Hermann属被证实是有效的,这需要对小型森林居住的类动物进行重大分类重新排列.
- 为了 *Nothoprocta cinerascens* 提出了一个新属,并且发现 Taoniscus 属与 Nothura 相同.
结论:
- 需要对居住在森林中的青动物进行重大分类学修订,根据优先级将物种从Crypturellus重新分配到Tinamus.
- 遗传学发现需要为Nothoprocta cinerascens创造一个新的属,并将Taoniscus同义化.
- 拟议的分类学变化旨在使分类与进化历史保持一致,解决Tinamidae家族中长期存在的模糊性.
相关概念视频
Phylogeny
43.5K
Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
43.5K
Phylogenetic Trees
45.0K
Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
45.0K
Convergent Evolution
27.3K
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.
27.3K
Taxonomy
73.1K
Taxonomy is the science of defining and naming groups of biological organisms based on shared characteristics. It uses a hierarchy of increasingly inclusive categories with Latin names. The smallest units of taxonomy, species and genus, are used to assign a formal, taxonomic name to each species in a system. This classification system, referred to as binomial nomenclature, was formalized by Carolus Linnaeus in the 18th century.
Hierarchy of Taxonomy
The hierarchy that Carolus Linnaeus first...
Hierarchy of Taxonomy
The hierarchy that Carolus Linnaeus first...
73.1K
The Fossil Record
24.9K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
24.9K
The Evidence for Evolution
42.2K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
42.2K


