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
All the best,
On Fri, Nov 3, 2017 at 3:14 PM, Jonathan Miller <jonathan...@gmail.com>
> 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
> If anybody could suggest me something will be great!
> Thank you all in advance!!!
> Best wishes,
> MORPHMET may be accessed via its webpage at http://www.morphometrics.org
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CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos
University of Porto
Campus Agrário de Vairão, 4485-661 Vairão
MORPHMET may be accessed via its webpage at http://www.morphometrics.org
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