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相关概念视频

Taxonomy01:31

Taxonomy

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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...
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相关实验视频

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Characterizing Herbivore Resistance Mechanisms: Spittlebugs on Brachiaria spp. as an Example
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分类学:Sus bucculentus重新审视了他们的分类.

Judith H Robins1, Howard A Ross, Melinda S Allen

  • 1Department of Anthropology and Allan Wilson Centre for Molecular Ecology and Evolution, The University of Auckland, Private Bag 92019, Auckland, New Zealand.

Nature
|April 14, 2006
PubMed
概括

由于新的遗传分析,野生猪Sus bucculentus的物种地位受到质疑. 重新检查显示,线粒体DNA与Sus scrofa的差异很小,这挑战了之前的发现.

科学领域:

  • 动物学 动物学
  • 遗传学 是一个遗传学.
  • 进化生物学 进化生物学

背景情况:

  • 据报道,野生猪物种Sus bucculentus于1997年在老被重新发现,自1892年以来一直没有记录.
  • 最初的鉴定依赖于形态学和报告的7%的线粒体DNA与Sus scrofa的分歧.
  • 在公共数据库中没有序列数据,这促使进一步调查.

研究的目的:

  • 重新评估Sus bucculentus的物种地位.
  • 为了验证Sus bucculentus和Sus scrofa之间报告的遗传差异.
  • 强调综合证据在物种划界中的重要性.

主要方法:

  • 来自Sus bucculentus标本的额外组织样本的分析.
  • 线粒体12S核糖体RNA基因的测序.
  • 遗传学分析将序列与Sus scrofa进行比较.

主要成果:

  • 重新分析发现样本和Sus scrofa之间仅有0.6%的序列分歧.
  • 这种较低的分歧将该标本置于Sus scrofa分类中.
  • 原来发现的7%的差异无法复制.

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结论:

  • 根据新的遗传证据,Sus bucculentus的物种地位是可疑的.
  • 遗传学和形态学数据都对准确的物种定义至关重要.
  • 需要进一步的研究来澄清这种野猪种群的分类地位.