Speciation along a latitudinal gradient: The origin of the Neotropical cycad sister pair Dioon sonorense-D. vovidesii (Zamiaceae).

ABSTRACT: Latitude is correlated with environmental components that determine the distribution of biodiversity. In combination with geographic factors, latitude-associated environmental variables are expected to influence speciation, but empirical evidence on how those factors interplay is scarce. We evaluated the genetic and environmental variation among populations in the pair of sister species Dioon sonorense-D. vovidesii, two cycads distributed along a latitudinal environmental gradient in northwestern Mexico, to reveal their demographic histories and the environmental factors involved in their divergence. Using genome-wide loci data, we determined the species delimitation, estimated the gene flow, and compared multiple demographic scenarios of divergence. Also, we estimated the variation

SUBMITTER: Gutierrez-Ortega JS 

PROVIDER: S-EPMC8207156 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature