PT Journal AU Duminil, J Caron, H Scotti, I Cazal, S Petit, R TI Blind population genetics survey of tropical rainforest trees SO Molecular Ecology JI Mol. Ecol. PY 2006 BP 3505 EP 3513 VL 15 IS 12 DE Bayesian assignment tests; genetic diversity; geographical structure; South America; species delimitation AB Rainforest tree species can be difficult to identify outside of their period of reproduction. Vascular tissues from Carapa spp. individuals were collected during a short field trip in French Guiana and analysed in the laboratory with nuclear and chloroplast markers. Using a Bayesian approach, > 90% of the samples could be assigned to one of two distinct clusters corresponding to previously described species, making it possible to estimate the genetic structure of each species and to identify cases of introgression. We argue that this blind procedure represents a first-choice rather than a fallback option whenever related taxa are investigated. ER