Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Distribution and Dispersion00:54

Distribution and Dispersion

Ecology is the study of how organisms interact with their environment and with one another. An important aspect of ecology is understanding where species are found and how individuals are distributed within those areas. The geographic range of a species refers to the total area where its members are located, while dispersion describes the pattern of spacing of individuals within that range.Geographic Range and Dispersion PatternsWithin a species’ geographic range, individuals may be distributed...
Understanding Species and Reproductive Barriers01:17

Understanding Species and Reproductive Barriers

A species is a group of organisms that interbreed and produce fertile offspring. Typically, individuals of the same species appear similar and share common characteristics due to their highly similar genomes. However, not all organisms that look alike are members of the same species. Various mechanisms keep most species discrete. While some mechanisms prevent reproductive behavior and fertilization (pre-zygotic isolation), others prevent the production of fertile offspring after mating has...
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
Microbial Classification System01:24

Microbial Classification System

Classification is the process of organizing organisms into hierarchically inclusive groups based on their phenotypic similarities or evolutionary relationships. A species comprises one or more strains, and closely related species are grouped into genera. Genera are further classified into families, families into orders, orders into classes, and so forth, up to the domain level, which is the broadest taxonomic rank derived from a combination of phenotypic and genotypic data.The nomenclature of...
Methods of Classification and Identification01:28

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...
Phylogenetic Species Concept in Microbiology01:22

Phylogenetic Species Concept in Microbiology

The phylogenetic species concept (PSC) is a framework used to delineate species based on evolutionary relationships, emphasizing shared ancestry and diagnosable genetic traits. Unlike morphological or biological species concepts, the PSC is particularly advantageous for microbial taxonomy, where traditional reproductive or phenotypic criteria often fall short due to the prevalence of asexual reproduction, minimal morphological differentiation, and widespread horizontal gene transfer among...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Common Chiffchaffs (Phylloscopus collybita) Diverge in a Genomic Region Associated With Migration Differences in Willow Warblers (Phylloscopus trochilus).

Molecular ecology·2026
Same author

Multi-sensor tracking reveals the extent of nocturnal migration in landbirds.

Current biology : CB·2026
Same author

Phylogenomic analyses reveal introgression and cryptic speciation in the globally distributed, vector-transmitted pathogen Plasmodium relictum.

Molecular phylogenetics and evolution·2026
Same author

Combined Evidence Reveals the Origin of a Rapid Range Expansion Despite Retained Genetic Diversity and a Weak Founder Effect.

Molecular ecology·2025
Same author

The Distribution and Dispersal of Large Haploblocks in a Superspecies.

Molecular ecology·2025
Same author

The Role of Host-Range Expansion and Co-Speciation in Host-Parasite Associations With the Divergence of the Great Tit Species Complex.

Ecology and evolution·2025

関連する実験動画

Updated: Jul 7, 2026

A Method for Quantifying Foliage-Dwelling Arthropods
08:20

A Method for Quantifying Foliage-Dwelling Arthropods

Published on: October 20, 2019

リング種の距離による特異性

Darren E Irwin1, Staffan Bensch, Jessica H Irwin

  • 1Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, BC, Canada V6T 1Z4. irwin@zoology.ubc.ca

Science (New York, N.Y.)
|January 22, 2005
PubMed
まとめ

環状種は,遺伝子フローにもかかわらず,種化を示す. 緑色のワルバーは,孤立した集団の間の明確な遺伝的違いを示し,その間に段階的な変化があり",距離による種分け"を支えています.

科学分野:

  • 進化生物学の進化生物学について
  • 専門分野の研究は,専門分野の研究である.
  • 集団遺伝学 人口遺伝学

背景:

  • リング種は,種化を理解するための鍵であり,中間形態を通して異なる集団を結ぶ.
  • 以前の研究では,リング種が遺伝子フローにもかかわらず特異性を示すことを示唆していたが,決定的な証拠は得られなかった.
  • 緑色の (Phylloscopus trochiloides) は,リング種のダイナミクスを研究するためのモデル生物です.

研究 の 目的:

  • 緑色のワルバーリング種の遺伝子フローと遺伝子の分岐を調査する.
  • リング種の形成の過程について,経験的証拠を提供すること.
  • の仮説を検証する.
  • 距離の力による種種化です.
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

さらに関連する動画

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates
08:56

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Published on: January 13, 2023

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles
10:23

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

Published on: July 11, 2025

関連する実験動画

Last Updated: Jul 7, 2026

A Method for Quantifying Foliage-Dwelling Arthropods
08:20

A Method for Quantifying Foliage-Dwelling Arthropods

Published on: October 20, 2019

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates
08:56

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Published on: January 13, 2023

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles
10:23

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

Published on: July 11, 2025

主な方法:

  • 遺伝子分析のために増幅された断片長ポリモルフィズム (AFLP) マーカーを使用した.
  • 緑色のワルバーの集団のリングの間の遺伝的多様性を分析しました.
  • 生殖的に孤立した形態と中間集団の間の遺伝的差異を比較した.

主要な成果:

  • AFLPマーカーは,2つの孤立した緑色のワルバーの形態の間の明確な遺伝的違いを明らかにしました.
  • これらの形を繋ぐリングに沿って,徐々に遺伝的変化の明確なパターンが観察されました.
  • 進行中の遺伝子フローの証拠は,インターグレイディング集団全体で検出されました.

結論:

  • この研究は,地理的連続体に沿って徐々に発生する種化について,これまでのところ最も強力な証拠を提供します.
  • 緑色のワルバーは,その例です.
  • 距離の力による種種化です.
  • 現実世界のリング種のシナリオで.
  • この研究は,新しい種の形成における遺伝子フローの役割を明らかにしています.