RT Journal Article SR Electronic T1 Size-Based Dominance Hierarchy In One Of Two Sympatric Cryptic Pacific Skinks (Emoia impar And Emoia Cyanura) JF bioRxiv FD Cold Spring Harbor Laboratory SP 2020.01.11.902866 DO 10.1101/2020.01.11.902866 A1 Mary “Molly” Hallsten YR 2020 UL http://biorxiv.org/content/early/2020/01/14/2020.01.11.902866.abstract AB Emoia impar and Emoia cyanura are two morphologically cryptic Pacific skinks that have different preferred thermal micro-habitats but similar geographic range and overlap. Previously individuals have been noted to display a size-based dominance hierarchy at favored basking sites, though this behavior was not specified between species. I found that only one of the two species, E. impar, naturally presents this size-based dominance hierarchy in areas of high population density. Neither species exhibit the hierarchy in low population density areas. No evidence was found to suggest that the presence of this hierarchy allows one species to exclude the other.