Captive Galápagos tortoises of unknown origin with signatures of Floreana ancestry.

Individuals are listed according to the ex situ collection in which they currently reside with acronyms as in “Materials and Methods” in the text. Unknown tortoises are assigned to a population of origin based on the location of a shared mtDNA haplotype previously sampled in the wild with corresponding GenBank accession numbers. All individuals possessed one of two “non-native” haplotypes originally sampled on northern Isabela in Puerto Bravo (PBR) (see text for more details). Other population and island locations are specified by acronyms as in Figure 1. Population and island assignment according to the microsatellite genotypic data and the tests of Rannala and Mountain (1997) and Pritchard et al. (2000) are indicated by their corresponding likelihood values (L1 & L2) and membership coefficients (q), respectively. The individual with a “Floreana-like” mtDNA haplotype and congruent nuclear assignment to Floreana is in bold italics.