カーロンクロウの協同同盟における親族の選択
Vittorio Baglione1, Daniela Canestrari, José M Marcos
1Population Biology/Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, SE-752 36, Uppsala, Sweden. vittorio.baglione@ebc.uu.se
まとめ
カーリオンカラスは協同繁殖を示し,巣にいる親戚を積極的に助けることを選択します. この行動は,配属選択理論を支持し,協力的な繁殖は,単に分散の結果としてではなく,関連した個体間で発生することを示しています.
科学分野:
- 行動生態学 行動生態学
- 進化生物学の進化生物学について
- 鳥類学 鳥類学とは,鳥類学である.
背景:
- 遅れた出生分散は,協力的な脊椎動物で親族社会を形成する一般的なメカニズムです.
- 協力的な繁殖における親族選択の役割はしばしば議論されているが,助手たちは親族の好みではなく,分散パターンによる親族の助けになる可能性がある.
研究 の 目的:
- 協力的な繁殖は親族の間に発生すべきであるという親族選択理論の予測をテストするために.
- 協同繁殖飼育者と,その助手との間の遺伝的関連性を調査するために,死体クロウ (Corvus corone corone).
主な方法:
- のカラスの集団を研究し,協力的な繁殖行動を観察しました.
- 巣の定住繁殖者と非繁殖助手 (子孫と移民) の間の遺伝的関連性を分析した.
- 協力的な繁殖関係における親族の選択と親族の選択の役割を評価した.
主要な成果:
- カーリオン・クラウは協同繁殖をしており,在住の繁殖家は,留守の子孫や無縁の移民の助けを借りている.
- 繁殖者と,巣で協力する同性移民の間で,高い遺伝的関連性が見つかりました.
- フィロパトリだけでは,観察された遺伝的関連性を説明できず,親戚の積極的な選択を示唆しています.
結論:
- カーリオン・クラウは,親族と協力して繁殖することを積極的に選択し,親族選択理論を支持する.
- この種の協同繁殖は,単に分散パターンの非選択的な結果ではない.
- この発見は,脊椎動物種の親族による協力の有力な証拠を提供している.
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