Hi Jonathan, there is a multivariate estimate for phylogenetic signal, with the corresponding significance testing, were you can test for phylogenetic signal in shape as a multidimensional trait. The method is described in Adams, D.C. 2014. A generalized K statistic for estimating phylogenetic signal from shape and other high-dimensional multivariate data. *Systematic Biology*. 63:685-697, and implemented in the function physignal of geomorph R package.
All the best, Antigoni On Fri, Nov 3, 2017 at 3:14 PM, Jonathan Miller <jonathan...@gmail.com> wrote: > Dear all, > > I´d like to ask you if any of you could suggest me some geometric > morfometric variables that could be used as traits for a phylogenetic > signal test. Up to now I have taken only the PC1 and PC2 from a PCA after > doing the nomal treatment to the landmarks sets... After that I also used > as trait the centroid size, but is it there any other variable that could > be informative about the sape that I can also use??? I´m working with > snails and a set of 24 landmarks and semilandmarks in around 20 samples per > species...and 20 species...and the question I want to solve is if the > shell shape in the phylogeny is distributed randomly or follows some > pattern... > > If anybody could suggest me something will be great! > > Thank you all in advance!!! > > Best wishes, > > Jonathan > > -- > 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 morphmet+unsubscr...@morphometrics.org. > -- Antigoni Kaliontzopoulou Assistant Researcher CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos University of Porto Campus Agrário de Vairão, 4485-661 Vairão PORTUGAL http://antigonik.wix.com/akaliontzopoulou http://cibio.up.pt/people/details/akaliont http://aphylogenetics.wix.com/phylogenetics -- 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 morphmet+unsubscr...@morphometrics.org.
