Climate change reduces genetic diversity of Canada lynx at the trailing range edge
Climate change reduces genetic diversity of Canada lynx at the trailing range edge
复制标题
气候变化降低了加拿大山猫后缘的遗传多样性
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
P. Wilson
中科院分区：
文献类型：
--
作者：
E. L. Koen;J. Bowman;D. Murray;P. Wilson
由于环境变化引起的物种分布的变化可能会影响物种分布范围内遗传结构的空间格局，包括种群适应潜力的可能变化。我们调查了加拿大安大略省加拿大猞猁分布区南部边缘的中性遗传多样性和分化的空间格局。我们分析了省级毛皮收获记录（1972 - 2010年），并收集了702只猞猁的14个微卫星位点的猞猁毛皮样本（2007 - 2009年）和基因型。我们发现，加拿大中部的猞猁南部范围边界自20世纪70年代以来向北收缩了175公里，冬季温度高，雪深低，适宜栖息地比例低，与下游范围边缘的中性遗传多样性低和遗传差异高密切相关。我们的工作测试了关于物种范围限制的基本想法，并证明了环境条件对中性遗传结构有显著影响。我们的研究结果表明，环境条件的变化将导致遗传多样性的进一步丧失，并可能降低适应潜力在南部周边猞猁种群。
Shifts in species distributions due to environmental change may aff ect the spatial pattern of genetic structure within a species ’ range, including possible changes to the adaptive potential of populations. We investigated spatial patterns of neutral genetic diversity and diff erentiation at the southern edge of the Canada lynx Lynx canadensis distribution in Ontario, Canada. We analyzed provincial fur harvest records (1972 – 2010) and collected and genotyped lynx pelt samples (2007 – 2009) from 702 lynx at 14 microsatellite loci. We show that the southern range boundary of lynx in central Canada has contracted northward by � 175 km since the 1970s, and that high winter temperature, low snow depth, and low proportion of suitable habitat are strongly correlated with low neutral genetic diversity and high genetic diff erentiation at the trailing range edge. Our work tests fundamental ideas about species range limits and demonstrates that environmental conditions can have a marked infl uence on neutral genetic structure. Our results suggest that changes in environmental conditions will result in further loss of genetic diversity and possibly reduce adaptive potential in southern peripheral lynx populations.
影响因子：
5.1
作者：
McInerny, G.;Travis, J. M. J.;Dytham, C.
通讯作者：
Dytham, C.