ウォレスの世界動物地理地域に関する最新情報です
Ben G Holt1, Jean-Philippe Lessard, Michael K Borregaard
1Center for Macroecology, Evolution, and Climate, Department of Biology, University of Copenhagen, 2100 Copenhagen Ø, Denmark.
Science (New York, N.Y.)
|December 22, 2012
まとめ
この研究は,21000以上の脊椎動物の種分布と系統学的データを用いて動物地理的地域を地図化しています. 独特の地球地域を明らかにし,進化のユニークさを強調し,生物地理的地図化を改善します.
科学分野:
- 動物学地理学 動物学地理学
- 進化生物学の進化生物学について
- 生物多様性 科学 科学 生物多様性
背景:
- 伝統的な生物地理的地図には,多くの場合,遺伝学的な考慮が欠けています.
- 種の分布と進化史を理解することは,生物地理的地域を定義する上で極めて重要です.
研究 の 目的:
- 種分布と系統遺伝学データを統合した動物地理学地域の世界地図を作成する.
- 異なる動物地理的地域とより大きな領域を特定する.
- 生物地理的地域化における系統遺伝情報の影響を評価する.
主な方法:
- 21,037種の両生類,鳥類,哺乳類の系統的関係による分布データを組み合わせた.
- 動物地理学的な地域のグローバルマップを生成しました.
- 半球間の系統遺伝的組成における空間的転移を分析した.
主要な成果:
- 20の異なる動物地理的地域を特定し,11のより大きな領域にグループ化しました.
- 分布のみに基づいて,以前に定義されたいくつかの地域に対する支持が限られていることが判明しました.
- 北半球と比較して南半球でより高い系統遺伝的転移が観察されました.
- 系統遺伝データを統合すると,歴史的関係や進化的にユニークな地域が明らかになることを示した.
結論:
- 系統遺伝情報は,正確で洞察力のある生物地理的地図作成に不可欠です.
- 新しい地図は,世界の生物多様性パターンを理解するための堅固な枠組みを提供します.
- このアプローチは,進化的に重要な領域を特定し,保全の努力を支援します.
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