女性ハヌマン・ラングルス (霊長類:コロビネ,プレスビティス・エンテルス) の間の階層的関係

S B Hrdy, D B Hrdy

Science (New York, N.Y.)

|September 3, 1976

まとめ

若い雌の動物は,高齢の雌が集団防衛に貢献しているにも関わらず,高齢の親族よりも高い社会的地位を達成することが多い. このユニークな支配的なパターンは,包括的な健康と生殖価値によって説明されます.

科学分野:

動物の行動動物の行動
進化生物学の進化生物学について
社会的ダイナミクス

背景:

動物集団における雌の階層は,通常短期的に安定しているが,毎年変動を示している.
高齢で大きめの雌は,しばしば群れ防衛に不可欠な役割を果たします.
若い雌がより年上の親族を上回るユニークな優位制度が観察されています.

研究の目的:

以前は文書化されていない女性の支配体制を記述し,説明する.
女性社会階層の階級変化に影響を与える要因を調査する.
このシステムを理解するために,包括的なフィットネス理論と生殖価値の概念を適用する.

主な方法:

女性の社会的階層に関する観察的研究.
ランクが時間とともに変化する分析.
観察された行動を解釈するために進化論の理論を適用する.

主要な成果:

女性の階層は短期的に安定しているが,長期的には年間変動がある.
若い女性たちは,一般的に,年長で大きな親族よりも高い地位を獲得します.
高齢の女性たちは,地位が低いにもかかわらず,部隊防衛に積極的に参加し続けています.

結論:

観察された支配体制は,インクルーシブフィットネス理論で説明できる.
生殖的価値は,若い雌がなぜ年上の雌を上回るかを理解するための枠組みを提供します.
このシステムは,雌の動物集団における複雑な社会的動態と進化的戦略を強調しています.

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