Tuesday, April 19, 2016

Faunal record identifies Bering isthmus conditions as constraint to end-Pleistocene migration to the New World

Meirav Meiri, Adrian M. Lister, Matthew J. Collins, Noreen Tuross, Ted Goebel, Simon Blockley, Grant D. Zazula, Nienke van Doorn, R. Dale Guthrie, Gennady G. Boeskorov, Gennady F. Baryshnikov, Andrei Sher, Ian Barnes
Proceedings of the Royal Society B:  Biological Sciences
11 December 2013

Figure 2:  Map showing approximate locations of ancient Cervus remains sampled in this study. Colours correspond to geographical locations: purple, North America; blue, northeast Siberia; green, central Asia; red, east China; black, samples that did not yield DNA.

Blog comment:  the paper concludes that Cervus canadensis (wapiti) entered North America from Siberia/Beringia in large numbers approximately 15 thousand years ago.  However, I would note that the paper does not sample ancient DNA from any part of North America for wapiti that would have been south of Last Glacial Maximum glaciers.  It therefore does not seem clear to me as to how the paper came to the conclusion that wapiti in North American today are mostly from Siberian/Beringian wapiti introduced since the last ice age.

No comments: