Demographic history influences spatial patterns of genetic diversityin recently expanded coyote (Canis latrans) populations
Demographic history influences spatial patterns of genetic diversityin recently expanded coyote (Canis latrans) populations
复制标题
人口统计历史影响最近扩张的郊狼（Canis latrans）种群遗传多样性的空间模式
作者：
Elizabeth Heppenheimer;Daniela S. Cosio;Kristin E. Brzeski;Danny Caudill;Kyle Van Why;Michael J. Chamberlain;Joseph W. Hinton;B. Vonholdt
近几十年来，人类介导的范围扩张有所增加，代表了评估在广泛的扩张前沿建立外围种群的遗传结果的独特机会。在过去的世纪，郊狼（Canis latrans）经历了普遍的范围扩张，现在居住在美国大陆的每一个州。土狼扩张到北美东部是由人为景观变化促进，并遵循两个广泛的扩张战线。北方的扩张延伸到了五大湖地区和加拿大南部，在那里与残狼种群的杂交很常见。南部和最近的扩张前线发生在大约40年后，在灰狼历史上一直缺席的地区，残余的红狼在20世纪70年代被消灭。我们对来自美国东部11个州的482只郊狼的10个微卫星位点进行了遗传调查，以解决不同的人口统计学历史如何影响遗传多样性的地理模式。我们发现，人口结构对应于南北划分，这是符合两个已知的扩张路线。此外，我们观察到极高的遗传多样性，这是最近扩大的人口的非典型性，可能是多个复杂的人口统计过程的结果，除了与其他犬种杂交。最后，我们考虑了地理空间的等位基因频率的过渡，并建议大西洋中部的北卡罗来纳州和弗吉尼亚州作为这两个不同的郊狼扩张前线之间的新兴接触区。
Human-mediated range expansions have increased in recent decades and represent unique opportunities to evaluate genetic outcomes of establishing peripheral populations across broad expansion fronts. Over the past century, coyotes (Canis latrans) have undergone a pervasive range expansion and now inhabit every state in the continental United States. Coyote expansion into eastern North America was facilitated by anthropogenic landscape changes and followed two broad expansion fronts. The northern expansion extended through the Great Lakes region and southern Canada, where hybridization with remnant wolf populations was common. The southern and more recent expansion front occurred approximately 40 years later and across territory where gray wolves have been historically absent and remnant red wolves were extirpated in the 1970s. We conducted a genetic survey at 10 microsatellite loci of 482 coyotes originating from 11 eastern U.S. states to address how divergent demographic histories influence geographic patterns of genetic diversity. We found that population structure corresponded to a north–south divide, which is consistent with the two known expansion routes. Additionally, we observed extremely high genetic diversity, which is atypical of recently expanded populations and is likely the result of multiple complex demographic processes, in addition to hybridization with other Canis species. Finally, we considered the transition of allele frequencies across geographic space and suggest the mid-Atlantic states of North Carolina and Virginia as an emerging contact zone between these two distinct coyote expansion fronts.
影响因子：
7
作者：
vonHoldt, Bridgett M.;Pollinger, John P.;Wayne, Robert K.
通讯作者：
Wayne, Robert K.
家犬（Canisamilis）的第二代遗传连锁图谱。
影响因子：
3.3
作者：
Neff,MW;Broman,KW;Mellersh,CS;Ray,K;Acland,GM;Aguirre,GD;Ziegle,JS;Ostrander,EA;Rine,J
通讯作者：
Rine,J