接触非依赖性暴露于 DAP96253 挥发物不能提高受白鼻综合征影响的(小褐蝙蝠)的存活率。
Contact-independent exposure to DAP96253 volatiles does not improve the survival rate of (little brown bats) affected by White-nose Syndrome.
机构信息
Department of Veterinary Pathobiology, University of Missouri - Columbia, Columbia, MO, United States of America.
Department of Biomedical Sciences, Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis.
出版信息
PeerJ. 2023 Oct 18;11:e15782. doi: 10.7717/peerj.15782. eCollection 2023.
Since the emergence of White-nose Syndrome, a fungal disease in bats, caused by hibernating populations of little brown bats () have declined by 70-90% within positive hibernacula. To reduce the impact of White-nose Syndrome to North American little brown bat populations we evaluated if exposure to volatile organic compounds produced by induced cells from strain DAP96253 could improve the overwinter survival of bats infected by . Two simultaneous field treatment trials were conducted at natural hibernacula located in Rockcastle and Breckinridge counties, Kentucky, USA. A combined total of 120 little brown bats were randomly divided into control groups ( = 60) which were not exposed to volatile organic compounds and treatment groups ( = 60) which were exposed to volatile organic compounds produced by non-growth, fermented cell paste composed of strain DAP96253 cells. Cox proportional hazard models revealed a significant decreased survival at the Rockcastle field trial site but not the Breckinridge field site. At the Breckinridge hibernacula, overwinter survival for both treatment and control groups were 60%. At the Rockcastle hibernacula, Kaplan-Meier survival curves indicated significantly increased overwinter survival of bats in the control group (43% survived) compared to the treatment group (20% survived). Although complete inhibition of by volatile organic compounds produced by induced strain DAP96253 cells was observed studies, our results suggest that these volatile organic compounds do not inhibit and may promote growth.
自白鼻综合征(一种由休眠的小褐蝙蝠引起的真菌病)出现以来,美国肯塔基州罗克卡斯尔和布雷肯里奇县的自然冬眠地进行了两项同时进行的现场处理试验。总共随机分配了 120 只小褐蝙蝠,分为对照组(=60)和处理组(=60)。对照组未暴露于挥发性有机化合物,而处理组则暴露于由非生长发酵细胞糊剂产生的挥发性有机化合物,该细胞糊剂由 DAP96253 菌株细胞组成。Cox 比例风险模型显示,罗克卡斯尔现场试验点的存活率显著降低,但布雷肯里奇现场试验点的存活率没有降低。在布雷肯里奇冬眠地,治疗组和对照组的越冬存活率均为 60%。在罗克卡斯尔冬眠地,Kaplan-Meier 生存曲线表明,对照组(43%存活)的蝙蝠越冬存活率明显高于治疗组(20%存活)。尽管观察到诱导的 DAP96253 菌株细胞产生的挥发性有机化合物可完全抑制,但我们的研究结果表明,这些挥发性有机化合物不会抑制,反而可能促进生长。