RT Journal Article SR Electronic T1 Rediscovery of red wolf ghost alleles in a canid population along the American Gulf Coast JF bioRxiv FD Cold Spring Harbor Laboratory SP 420356 DO 10.1101/420356 A1 Elizabeth Heppenheimer A1 Kristin E. Brzeski A1 Ron Wooten A1 Will Waddell A1 Linda Y. Rutledge A1 Michael J. Chamberlain A1 Daniel R. Stahler A1 Joseph W. Hinton A1 Bridgett M. vonHoldt YR 2018 UL http://biorxiv.org/content/early/2018/09/18/420356.abstract AB Rediscovering species once thought to be extinct or on the edge of extinction is rare. Red wolves have been extinct along the Gulf Coast region since 1980, with their last populations found in coastal Louisiana and Texas. We report the rediscovery of red wolf ghost alleles in a canid population on Galveston Island, Texas. We analyzed over 7,000 SNPs in 60 canid representatives from all legally recognized North American Canis species and two phenotypically ambiguous canids from Galveston Island. We found notably high Bayesian cluster assignments of the Galveston canids to captive red wolves with extensive sharing of red wolf private alleles. Today, the only known extant wild red wolves persist in a reintroduced population in North Carolina, which is dwindling amongst political and taxonomic controversy. Our rediscovery of red wolf ancestry after almost 40 years introduces both positive opportunities for additional conservation action and difficult policy challenges.