絶滅の危機に瀕している肉食動物の急速な人口増加
M B Grenier1, D B McDonald, S W Buskirk
1Department of Zoology and Physiology, University of Wyoming, 1000 East University Avenue, Laramie, WY 82071, USA. martin.grenier@wgf.state.wy.us
Science (New York, N.Y.)
|August 11, 2007
まとめ
ワイオミング州での黒足フレットの再導入は,絶滅危惧種の食肉類の早期生存と繁殖の重要性を強調する,成功した人口増加を示しています. これは,好機的な放出が種の回復に役立つ可能性があることを示唆しています.
科学分野:
- 野生生物生物学 野生生物生物学
- 保護科学 保護科学 保護科学
- 人口生態学 人口生態学
背景:
- 絶滅危惧種の再導入は,高いコストと頻繁な失敗のために課題に直面しています.
- ワイオミング州シャーリー盆地にある黒足フレット (Mustela nigripes) の個体数は,1997年に大きく減少して5個まで減少した.
研究 の 目的:
- ワイオミング州シャーリー盆地での再導入後の黒足フレットの集団動態を分析するために.
- この絶滅危惧種の回復に影響を与える重要な生命史の特徴を特定する.
主な方法:
- 1991年から2006年までの人口監視.
- 人口統計パラメータを評価するためのマトリックス人口モデリング.
主要な成果:
- ブラックフットフレット群は,1997年の最低5頭から,2006年までに推定223頭まで急速に増加した.
- マトリックスモデリングは,1年目の生存と繁殖が人口増加に不可欠であることを示しました.
- この生命の歴史は,絶滅危惧種の肉食哺乳類にとって珍しいものです.
結論:
- シャーリー盆地における黒足フレットの再導入の取り組みは成功しており,人口回復を示しています.
- 保存戦略は,より機会主義的で広範な放出アプローチを組み込むことによって利益を得ることができます.
- 絶滅危惧種の回復には,早期の成功などの重要な生命の歴史の特徴を理解し,活用することが不可欠です.
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