蛇のマクロ進化の特異性
Pascal O Title1,2,3, Sonal Singhal3,4, Michael C Grundler3
1Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794, USA.
まとめ
蛇やトカゲは 進化の過程で 驚くべき適応を遂げています 特にヘビの多様化は 特殊な捕食戦略によって 生態系を変えており 脊椎動物の生物多様性にも影響を及ぼしています
科学分野:
- 進化生物学
- 動物学
- エコロジー
背景:
- スクアマタ (ヘビやトカゲ) は陸上の脊椎動物の大部分を占める.
- 移動,栄養,感覚のシステムに 多様なイノベーションを 披露しています
- 放射線の背後にある 進化の原動力は 十分に理解されていません
研究 の 目的:
- スクワメットのマクロ進化の 原因と結果を調査する
- 蛇やトカゲの進化の歴史と多様化パターンを理解するために
主な方法:
- 6万以上の動物を個別的に観察した
- 1018種 (5400ロシ) のゲノムデータを用いてタイム・キャリブレーテッド・フィロゲニスを構築した.
主要な成果:
- 蛇の種化と表型進化の動態の変化を特定した.
- 蛇の特殊な捕食戦略の 繰り返しの起源と多様化が示されています
- 蛇が動物社会における 食物連鎖構造をどのように変えたかを示しました
結論:
- 史的な偶然と 初期のヘビの進化によって 形成されています
- 蛇の進化は脊椎動物の生物多様性に大きな影響を与えました
関連する概念動画
Convergent Evolution
27.7K
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.
27.7K
The Evidence for Evolution
42.7K
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.
42.7K
Speciation Rates
21.2K
Overview
21.2K
Phylogeny
44.1K
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.
44.1K
Synteny and Evolution
3.3K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.3K
What is Evolutionary History?
36.5K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
36.5K


