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首页> 外文期刊>Northeastern Naturalist >Changes in Rates of Capture and Demographics of Myotis septentrionalis (Northern Long-eared Bat) in Western Virginia before and after Onset of White-nose Syndrome
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Changes in Rates of Capture and Demographics of Myotis septentrionalis (Northern Long-eared Bat) in Western Virginia before and after Onset of White-nose Syndrome

机译：白鼻子综合征发作前后弗吉尼亚州西部长耳蝠（Myotis septentrionalis）（北部长耳蝙蝠）捕获率和人口统计学的变化

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摘要

Documenting the impacts of white-nose syndrome (WNS) on demographic patterns, such as annual survivorship and recruitment, is important to understanding the extirpation or possible stabilization and recovery of species over time. To document demographic impacts of WNS on Myotis septentrionalis (Northern Long-eared Bat), we mistnetted at sites in western Virginia where Northern Long-eared Bats were captured in summer before (1990-2009) and after (2011-2013) the onset of WNS. Our mean capture rates per hour, adjusted for area of net and sampling duration, declined significantly from 0.102 bats/m(2)/h before WNS to 0.005 bats/m(2)/h (-95.1%) by 2013. We noted a time lag in the rate of decline between published data based on bats captured during the swarming season and our summer mist-netting captures from the same geographic area. Although proportions of pregnant or lactating females did not vary statistically in samples obtained before and after the onset of WNS, the proportion of juvenile bats declined significantly (-76.7%), indicating that the viability of Northern Long-eared Bats in western Virginia is tenuous.
机译：记录白鼻综合症（WNS）对人口结构的影响，例如每年的生存和补充，对于了解物种的灭绝或随着时间的推移可能稳定和恢复至关重要。为了记录WNS对Myotis septentrionalis（北长耳蝙蝠）的人口统计学影响，我们在弗吉尼亚州西部的地点（在1990-2009年夏季之前和2011-2013年夏季捕获北长耳蝙蝠的地方）迷了网。 WNS。到2013年，我们的每小时平均捕获率（经净面积和采样持续时间调整后）从WNS之前的0.102 bats / m（2）/ h大幅下降至0.005 bats / m（2）/ h（-95.1％）。我们注意到基于在蜂拥季节捕获的蝙蝠的已发布数据与我们从同一地理区域的夏季薄雾捕获的数据之间的下降速度之间存在时间滞后。尽管在WNS发病前后获得的样本中怀孕或哺乳期雌性的比例没有统计学差异，但幼蝙蝠的比例显着下降（-76.7％），这表明西弗吉尼亚北部长耳蝙蝠的生存能力很弱。

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