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西赤道アフリカにおける類人猿の悲惨な減少
Peter D Walsh1, Kate A Abernethy, Magdalena Bermejo
1Department of Ecology and Evolutionary Biology, Guyot Hall, Princeton, New Jersey 08540, USA. pwalsh@princeton.edu
Nature
|April 8, 2003
まとめ
ゴリラやチンパンジーを含むアフリカの類人猿の個体数は,商業的な狩猟と生息地の喪失により,ガボンでは50%以上減少しています. エボラ出血熱の流行は,現在,絶滅の危機に瀕しているこれらの種を脅かしています.
科学分野:
- プリマトロジー・プリマトロジー学
- 保護生物学の保護生物学
- エコロジー エコロジー エコロジー
背景:
- アフリカの類人猿の個体群は,人口増加と生息地の破壊による深刻な脅威に直面しています.
- 西赤道アフリカの森林は,ゴリラとチンパンジーの最後の重要な要塞と考えられています.
- ガボンとコンゴ共和国は,世界のゴリラと最も一般的なチンパンジーの約80%を収容していると推定されています.
研究 の 目的:
- ギャボンにおけるアフリカ類人猿の集団動向を評価する.
- 類人猿の減少の主な原因を特定する.
- ゴリラとチンパンジーの生存に対する現在と将来の脅威を評価する.
主な方法:
- 1983年から2000年の間における類人猿の集団の変化を推定するための調査を実施した.
- 商業的狩猟と機械的伐採が類人猿の集団に与える影響を分析した.
- エボラ出血熱のサル集団への感染拡大と影響を評価した.
主要な成果:
- ガボンの類人猿の個体数は,1983年から2000年の間に50%以上減少した.
- 機械化された伐採の拡大によって可能になった商業的狩猟が,この減少の主な原因として特定されました.
- エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は,エボラ出血熱は.
結論:
- この地域のゴリラとチンパンジーは,緊急に"危機的に絶滅危惧種"に昇格すべきです.
- 強化された法執行,保護区管理,エボラ予防など,緊急の保全対策が不可欠です.
- 緊急の介入がなければ,この類人猿の種は,今後10年以内に絶滅するリスクが高い.
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