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Spatial variation in the echolocation calls of the little brown bat (Myotis lucifugus) 收藏

小棕蝠（Myotis lucifugus）回声定位的空间变异
原文求助 发布源
作者
N. Veselka;* L.P. McGuire;[†] Y.A. Dzal;[‡] L.A. Hooton;[§] M.B. Fenton
作者单位
Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada.
关键词
echolocation, geographic, spatial, variation, call structure, Myotis lucifugus, little brown bat
关键词译文
回声定位，地理，空间，变异，呼叫结构，Myotis lucifugus，小棕蝙蝠
发布日期
10 September 2013
页码
795-801
DOI
10.1139/cjz-2013-0094
来源信息
Canadian Journal of Zoology ISSN：0008-4301, 2013年, 91卷, 11期, 795-801页
摘要
We studied spatial variation in echolocation call structure of the little brown bat (Myotis lucifugus (LeConte, 1831)) by analysing calls recorded from free-flying individuals at 1 site in Haida Gwaii, British Columbia, 1 site in Chautaqua, New York, and 20 sites along the Hudson River, New York. We controlled for factors that are often thought to lead to interspecific variation in echolocation calls (habitat, ontogeny, presence of conspecifics, recording techniques, ambient conditions), which allowed us to focus on the effect of spatial scale on call structure. As predicted, we found that at small scales (up to 1 km), there was significant geographic variation, likely owing to roost-specific signatures and group foraging activities. At intermediate scales (2–500 km), we found no differences in call structure, suggesting that populations within this area are part of a single hibernating and breeding population. Finally, echolocation call structure differed at the continental scale (>1000 km) likely because of little genetic exchange among sampled populations. Our results highlight the importance of considering the magnitude of spatial scale when examining variation in echolocation call structure.
摘要译文
我们通过分析来自不列颠哥伦比亚省Haida Gwaii的1个地点的自由飞行个体记录的呼叫来研究小棕蝠（Myotis lucifugus（LeConte，1831））的回声定位呼叫结构的空间变化，该地点位于纽约Chautaqua，纽约哈德逊河沿岸的20个地点。我们控制了通常被认为导致回声定位呼叫（栖息地，个体发育，同种体存在，记录技术，环境条件）的种间变异的因素，这使我们能够专注于空间尺度对呼叫结构的影响。正如预测的那样，我们发现，在小规模（最多1公里）的地方，存在显着的地理差异，可能是由于特定栖息地的特征和群体觅食活动。在中等规模（2-500公里），我们发现呼叫结构没有差异，表明该区域内的人口是单一冬眠和繁殖群体的一部分。最后，回声定位呼叫结构在大陆尺度（> 1000 km）不同，可能是因为抽样种群之间的遗传交换很少。我们的研究结果强调了在检测回声定位呼叫结构的变异时考虑空间尺度的重要性。
N. Veselka;* L.P. McGuire;[†] Y.A. Dzal;[‡] L.A. Hooton;[§] M.B. Fenton. Spatial variation in the echolocation calls of the little brown bat (Myotis lucifugus)[J]. Canadian Journal of Zoology, 2013,91(11): 795-801