聴衆は,男性の歌う鳥がパートナーの声に反応することを誘導します
Clémentine Vignal1, Nicolas Mathevon, Stéphane Mottin
1Equipe Communications Acoustiques NAMC CNRS UMR8620, Université Paris XI-Orsay and LBA Université Jean Monnet, 42023 Saint-Etienne Cedex 2, France.
Nature
|July 23, 2004
まとめ
雄の歌う鳥は,ゼブラフィンチのように,他のペアの交尾状態を評価することができます. この社会的知性は,パートナーに対する自分の行動を調整することを可能にします.
科学分野:
- 動物の行動 動物の行動
- コグニティブ・エトロジーは,認知のエトロジーである.
- ソーシャル・コग्निションとは
背景:
- 社会知能仮説は,複雑な社会環境が動物における認知の進化を促す,と仮定している.
- 社会的意識は霊長類で研究されているが,鳥類のような他の社会的な種におけるその範囲は理解されていない.
- 鳥類のコミュニケーションにおける聴衆効果は,社会的意識を示唆しますが,グループ仲間の関係を推定することは証明されていません.
研究 の 目的:
- 歌う鳥が,同種のペアの社会的関係,特に交尾状態を評価できるかどうかを調査する.
- この社会的情報が,群生的な歌う鳥の種における個々の行動に影響を与えるかどうかを判断する.
主な方法:
- この研究は,群生的な歌う鳥である雄のゼブラフィンチ (Taeniopygia guttata) に焦点を当てました.
- 研究者は,他のペアの観察された交尾状態への反応として,雄のゼブラフィンチの行動を観察し,分析しました.
主要な成果:
- オスのゼブラフィンチは,同種のペアの交尾状態に注意を示した.
- この情報は,自分の女性パートナーに対する行動を調節するために,男性によって積極的に使用されました.
結論:
- 群れの歌う鳥は,集団の仲間の社会的関係を評価する能力を持っています.
- この発見は,霊長類を超えて鳥類にまで及ぶ社会知能の仮説を支持する.
- 鳥の社会的認知能力は,これまで示されたよりも高度に発達しています.
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