Dear everyone, I want to test if a trait evolved by random drift only without selection. My hypothesis regarding a specific trait - I don’t want to tell which if it turns out to be a good idea ;-) - is, that there is no selection acting on it and it is evolving by random mutations only. Thus u can see phenotypic differences between the species but without selection advantage or disadvantage for the species.
So now I’m looking for models and R packages. I first thought about diversitree. make.quasse with and without drift and compare the models… However, the problem is, that my data is a discrete multitrait and not continuous. Thus I think brownian motion models are not the right thing to look at? Then I thought about just testing for clustering in the tips and compare with a random distribution of the trait… But since its its a multitrait and the phylogeny is not super big, I think this method is not good for discriminating the randomness… I really hope anyone can give me some advice which methods might be suitable. Are there any at all? It seems its not easy since the only thing I really found was brownian motion... Cheers, Franz Franz-Sebastian Krah PhD student, Fungal Ecology and Evolution Plant Biodiversity Research Group Technische Universität München (TUM) Mobile: 0170 5221189 Personal Website <http://franzkrah.github.io/> and University Website <http://www.biodiv.wzw.tum.de/index.php?id=18> [[alternative HTML version deleted]] _______________________________________________ R-sig-phylo mailing list - R-sig-phylo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-phylo Searchable archive at http://www.mail-archive.com/r-sig-phylo@r-project.org/
