The authors regret that the following errors were in the published paper:

In the affiliations, “United States Geological Survey” should be changed to “U.S. Geological Survey”.

In the Methods section “Additional animals were obtained from a colony maintained at the USGS Wetlands Center;” should be changed to “Additional animals were obtained from a colony maintained at the USGS Wetland and Aquatic Research Center;”.

In the Methods section “All DNA sequences have been deposited in the National Center for Biotechnology Information GenBank (see Table 1).” should be changed to “All DNA sequences have been deposited in the National Center for Biotechnology Information GenBank.”