過去と将来の季節的な気候に反応する白尾ジャックのカモフラージュの進化
Mafalda S Ferreira1,2,3,4, Timothy J Thurman3, Matthew R Jones3
1CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal.
まとめ
白い尻尾のウサギの季節性毛の色は 遺伝的に制御され 雪の覆いに関係しています この遺伝的基盤は 気候変動に対する 住民の脆弱性や適応可能性を予測し 保護活動に役立つのです
科学分野:
- エコロジー
- 進化生物学
- 遺伝学
背景:
- 適応特性は 種の生存に不可欠ですが 気候変動の脆弱性を予測するのに 遺伝的根拠はほとんど使われていません
- 白い尻尾のウサギ (Lepus townsendii) の季節的な皮の色は,雪の覆いに対する重要な適応です.
研究 の 目的:
- 白い尻尾のウサギの 季節的な毛色の変化の 遺伝的基盤を調査するためです
- 人口の脆弱性や気候変動への適応に関する この遺伝的基盤の予測力を評価する.
主な方法:
- 毛皮の色に関連した重要な遺伝子 (EDNRB,CORIN,ASIP) の遺伝子変異の分析
- 季節的な雪の覆いのデータと遺伝的変化の相関関係
- 気候変動のシナリオにおける適応の可能性を予測するための人口シミュレーション
主要な成果:
- 季節的な皮の色の変化は,主にエンドセリン受容体B型 (EDNRB),コリンセリンペプチダゼ (CORIN),アグウティシグナルタンパク質 (ASIP) の遺伝的変化によって決定される.
- 冬の色の変異は異なったアレルと関連しており,祖先と内向的な遺伝物質の両方の選択を示しています.
- 雪の覆いは減少すると,カモフラージュの不一致が広がると予測されていますが,冬のより暗い毛皮の多様性を持つ集団は,迅速な適応の可能性を示しています.
結論:
- 季節的な毛皮の色のような 適応性特性の遺伝的基盤は 気候変化に対する 種の反応を予測できます
- この遺伝的枠組みを理解することは 進化的救済を容易にし 脆弱な集団の保全戦略に情報を提供するために不可欠です
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