軟骨動物 の 中 で の 遅い 衰え は,衰え に 関する 進化 論 に 異議 を 唱え ます
Rita da Silva1,2,3, Dalia A Conde1,2,3, Annette Baudisch3,4
1Department of Biology, University of Southern Denmark, 5230 Odense M, Denmark.
Science (New York, N.Y.)
|June 23, 2022
まとめ
進化論の予測に反して 亀やカメの衰えは 遅いか 軽微かです これらの爬虫類は ほとんどの種とは違って より良い環境で 老化を逆転させることもあります
科学分野:
- ゲロントロジー
- 進化生物学
- ヘルペトロジー
背景:
- 進化論は 衰えが全ての生物に共通すると予測しています
- カメやカメのような種は この普遍性を無視して 取るに足らない老化を示すと仮定されています
研究 の 目的:
- カメやカメが老化が遅いか 軽いかを調べる
- 人類を含む他の種との 老化率を比較する
- これらの爬虫類の長寿と老化を 影響する要因を探るため
主な方法:
- 動物園や水族館で 52種のカメを対象に 広範な比較研究を行いました
- 高齢化率,成人の平均寿命,そして長寿を分析した.
- 体重,性別二重化,長寿の関係を調べました
- 環境条件が老化に与える影響を評価した.
主要な成果:
- 研究されたカメとカメの種の約75%は,遅いまたは軽微な衰老を示しています.
- 生物の約80%の老化率は 現代人の老化率より低い.
- 体重は男女ともに 平均寿命と正の相関関係があります
- 性別による二次元化は 性別による長寿の違いを説明します
- タートルズとカメは,環境条件の改善に反応して老化を減らす可能性を示しました.
結論:
- カメとカメは 老化の普遍性を否定する 説得力のある証拠です
- これらの爬虫類は 独特の老化プロセスを持ち 潜在的に環境要因に 影響されています
- この発見は 老化と長寿の進化について 新たな洞察を与えてくれます
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