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首页> 外文期刊>Canadian Journal of Zoology >DNA profiles of the eastern Canadian wolf and the red wolf provide evidence for a common evolutionary history independent of the gray wolf
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DNA profiles of the eastern Canadian wolf and the red wolf provide evidence for a common evolutionary history independent of the gray wolf

机译：加拿大东部狼和红狼的DNA概况为独立于灰狼的共同进化史提供了证据

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摘要

The origin and taxonomy of the red wolf (Canis rufus) have been the subject of considerable debate and it has been suggested that this taxon was recently formed as a result of hybridization between the coyote and gray wolf. Like the red wolf, the eastern Canadian wolf has been characterized as a small "deer-eating" wolf that hybridizes with coyotes (Canis latrans). While studying the population of eastern Canadian wolves in Algonquin Provincial Park we recognized similarities to the red wolf, based on DNA profiles at 8 microsatellite loci. We examined whether this relationship was due to similar levels of introgressed coyote genetic material by comparing the microsatellite alleles with those of other North American populations of wolves and coyotes. These analyses indicated that it was not coyote genetic material which led to the close genetic affinity between red wolves and eastern Canadian wolves. We then examined the control region of the mitochondrial DNA (mtDNA) and confirmed the presence of coyote sequences in both. However, we also found sequences in both that diverged by 150 000 - 300 000 years from sequences found in coyotes. None of the red wolves or eastern Canadian wolf samples from the 1960s contained gray wolf (Canis lupus) mtDNA sequences. The data are not consistent with the hypothesis that the eastern Canadian wolf is a subspecies of gray wolf as it is presently designated. We suggest that both the red wolf and the eastern Canadian wolf evolved in North America sharing a common lineage with the coyote until 150 000 - 300 000 years ago. We propose that it retain its original species designation, Canis lycaon. [References: 34]
机译：红狼（Canis rufus）的起源和分类法一直是争论的话题，并且有人提出，由于土狼和灰狼之间的杂交，这种分类群是最近形成的。像红狼一样，加拿大东部的狼也被描述为与土狼（Canis latrans）杂交的小型“吃鹿”狼。在研究阿尔冈金省立公园的加拿大东部狼群时，我们根据8个微卫星基因座的DNA谱图认识到与红狼的相似之处。通过比较微卫星等位基因与北美其他狼群和土狼种群的微卫星等位基因，我们检查了这种关系是否是由于渗入的土狼遗传物质水平相似所致。这些分析表明，不是土狼遗传物质导致了红狼和加拿大东部狼之间的密切遗传亲和力。然后，我们检查了线粒体DNA（mtDNA）的控制区，并确认了两者中均存在土狼序列。但是，我们还发现了这两种序列与土狼中发现的序列相距15万至30万年。 1960年代的红狼或加拿大东部的狼样本均不包含灰狼（Canis lupus）mtDNA序列。数据与以下假设不符：加拿大东部狼是目前指定的灰狼亚种。我们建议，直到15万至30万年前，红狼和加拿大东部的狼都在北美进化，与土狼有共同的血统。我们建议它保留其原始物种名称Canis lycaon。 [参考：34]

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