Dear All, I'm working with a 3D GM data set and am looking for a specific test of convergence that also accounts for phylogeny. After some searching it's still not clear to me what is appropriate - so far I only see programs that use reduced PC axes as continuous characters, but nothing that uses the full Procrustes coordinates. I've applied a phylogenetic ANOVA in Geomorph to at least show that after accounting for phylogeny, morphological shape is significantly different among ecological groups (in this clade several unrelated lineages occur in the same ecological niche).
Does anyone know of a method for testing for convergence across a phylogeny using the full shape data or is it always using PC scores? What about using scores from a CVA instead, since they are specifically addressing the question of differences among the a priori ecological groups (and PCA does not)? Could those be mapped onto a phylogeny and modelled in terms of BM vs OU, to test if that morphological change is adaptive? Any advice on these analyses would be appreciated. I'm aware of the package Surface but I'm not convinced that is right for my system. My shape data has a significant phylogenetic signal and I suspect that one ecological group in particular is highly convergent. Thanks for any help! Christy School of BioSciences University of Melbourne Parkville VIC 3010, Australia Email: [email protected] -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
