Social activity of lesser horseshoe bats (Rhinolophus hipposideros) at nursery roosts and a hibernaculum in North Wales, U.K
Social activity of lesser horseshoe bats (Rhinolophus hipposideros) at nursery roosts and a hibernaculum in North Wales, U.K
复制标题
DOI：
10.3161/15081109acc2017.19.1.013
复制
发表时间：
2017-06-01
影响因子：
1
通讯作者：
Andrews, Peter T.
中科院分区：
文献类型：
--
作者：
Andrews, Margaret M.;Hodnett, Amelia M.;Andrews, Peter T.
为了更好地了解社会活动的重要性，英国北威尔士的小马蹄蝠（Rhinolophus hipposideros）发出的超声波叫声。自2010年以来，在5月至7月的苗圃栖息地内外和10月的冬眠室中，在延长的预设期内记录了它们。根据基频的频率和持续时间、谐波的数量和序列中的呼叫数量，将基频在15-42 kHz之间的超声呼叫识别为7类婴儿发育呼叫和15类成人超声社会呼叫。使用红外摄像机和同步时间扩展录音机对活动进行远程监测。新生儿R.河马使出生的时间得以确定，婴儿回声定位标志着他们开始飞行的时间。在冬眠场所的颤音广告电话表示在10月的交配行为。通过比较呼叫触发的录音时间，可以快速确定活动的可变级别。超声检查时间最长的是7月（50.2 min/h）和6月（49.1 min/h）。在这些记录中，95和90名成年人在觅食后返回栖息地，分别有16和42名婴儿。今年五月，在一个苗圃栖息地外的录音和录像显示，在200只成年红腹果蝇出现的过程中，它们发出了超声波的社会叫声。在低照度（2 lux）下，对马蹄甲的生长有明显的抑制作用，说明马蹄甲在低照度下生长较好。河马是从事社会活动，而不是轻采样。对10个苗圃栖息地的调查表明，这种社会行为是R。威尔士的河马
To better understand the importance of social activity, ultrasonic calls made by lesser horseshoe bats (Rhinolophus hipposideros) in North Wales, U.K. were recorded during extended pre-set periods since 2010 inside and outside nursery roosts from May to July and in a hibernaculum in October. Ultrasonic calls with fundamental frequencies between 15-42 kHz were identified as seven categories of infant development calls and 15 categories of adult ultrasonic social calls according to the frequency and duration of the fundamental, the number of harmonics and the number of calls in a sequence. Activities were monitored remotely using infrared video cameras with simultaneous time expansion sound recorders. Distinctive polyharmonic isolation calls of newborn R. hipposideros enabled timing of births to be determined and infant echolocation marked the time when they started to fly. Trill advertisement calls in the hibernaculum indicated mating behaviour in October. Comparison of call-triggered recording times enabled variable levels of activity to be determined quickly. The longest sonogram times were in July (50.2 min/h) and in June (49.1 min/h). During these recordings, 95 and 90 adults returned to the roost after foraging and there were 16 and 42 babies, respectively. In May sound and video recordings outside a nursery roost revealed ultrasonic social calls during the emergence of 200 adult R. hipposideros when the light level was low at two lux, which showed that R. hipposideros were engaged in social activity, not light sampling. Surveys of ten nursery roosts showed that this social behaviour was typical of R. hipposideros in Wales.