アメリカ自然史博物館のインスタグラム(amnh) - 12月3日 12時49分

Did you know many coyotes in the eastern United States are actually part wolf? A team of scientists discovered this fact through sequencing the mitochondrial DNA of 686 coyotes. By tracing which genes in a given DNA sample belong to each wild canine, researchers were able to understand why northeastern coyotes are larger than those in the West. Nearly a century ago, coyotes mated with wolves in the Great Lakes region and produced fertile offspring. These hybrids, which were larger than coyotes but smaller than wolves, then migrated east through Canada and were able to hunt deer and colonize more effectively than a second front of coyotes—all non-wolf—that arrived east via Ohio.
Photo: Plos One; Mech LD, Asa CS, Callahan M, Christensen BW, Smith F, Young JK

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