Scientists from the University of Puerto Rico in Mayagüez studied the mitochondrial DNA of Caribbean geckos to understand their evolution.
Article: Díaz-Lameiro, A. M., Oleksyk, T. K., Bird-Picó, F. J. And Martínez-Cruzado, J. C. (2013). Colonization of islands in the Mona Passage by endemic dwarf geckoes (genus Sphaerodactylus) reconstructed with mitochondrial phylogeny. Ecology and Evolution. http://onlinelibrary.wiley.com/doi/10.1002/ece3.770/ abstract