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
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.
