バット白鼻症候群:新興の真菌病原体?
David S Blehert1, Alan C Hicks, Melissa Behr
1National Wildlife Health Center, U.S. Geological Survey (USGS), 6006 Schroeder Road, Madison, WI 53711, USA. dblehert@usgs.gov
Science (New York, N.Y.)
|November 1, 2008
まとめ
白鼻症候群 (WNS) は,北米におけるコウモリの死亡率を大幅に引き起こす. 既知のGeomyces種とは異なる新種の心理的な真菌が,感染したコウモリの皮膚をコロニー化する.
科学分野:
- ミコロジー 菌類学
- 獣医学病理学 獣医学病理学について
- 野生動物の病気 エコロジー エコロジー
背景:
- 白鼻症候群 (WNS) は,2006~2007年以来,米国北東部のコウモリ死亡事件を引き起こしてきました.
- コウモリ個体数は,調査された冬眠期で75%以上減少しています.
- 感染したコウモリは,口口,耳,翼の膜にキノコの成長を示します.
研究 の 目的:
- 白鼻症候群に関連した皮膚性真菌感染症の特徴を示すために.
- WNSに関連するコウモリの死因の原因となるエチオロジック・エージェントを特定する.
主な方法:
- 感染したコウモリ皮膚の直接顕微鏡検査.
- WNSに感染したコウモリから真菌培養と隔離.
- 孤立した真菌種の系統遺伝分析.
主要な成果:
- 心理的な真菌が,WNSに感染したコウモリの皮膚を植民していることが確認された.
- 孤立した真菌は,Geomyces spp.と系統遺伝的に関連している.
- このキノコは,既知のゲオミセスの種と比較して,独特のコニディアス形状を示しています.
結論:
- 新しい真菌種が白鼻症候群と関連している.
- このキノコは,観察されたコウモリ死亡率に起因する可能性が高いエチオロジックエージェントです.
- 菌類の生物学とWNSの病原性を理解するためにさらなる研究が必要である.
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