Hi,
thanks Rafael and Emmanuel for further input into this problem. I have
followed Rafael's advice and tried to use MCMCglmm with the help of
Shinichi Nakagawa. This seems to provide again sensible results, however
I would also be interested in following the procedure suggested by
Emmanuel,
Hi Marguerite and Matt,
thanks for your comments I should perhaps explain better the analysis I
am trying to do which I tried to avoid first because it is lengthy and
complicated (you have been warned continue reading at your own peril):
The idea is to test for co-evolution between plumage
Hello Kaspar,
I am new to phylogenetic comparative methods, so I may not be of much help, but
I am dealing with similar questions that you are, so hopefully I can at least
help the discussion in a useful way!
First, I tried to sort out your main questions, which seem to be:
- Are U- and
Dear Kaspar,
Are your traits the same? Basically, are the seven color patches on the same
individual all one trait, or are they seven traits? Do all species have the
seven color patches? Or are the number of color patches variable? (this could
also be a character).
I think before you attempt
Hi Kaspar and others,
Sorry for responding so late to this. I am not sure if there exists any
precedent for doing this but it seems problematic. We do not expect BM
alone (or a variant thereof) to be a good model to account for variation
within a species and I would strongly recommend against
