Dear morphometricians,
my name is Carlo Meloro and I am conducting a study on the evolution of
mandible shape in large carnivores. I am wondering if you could give me
some suggestions on the use of phylogenetic indepedent contrasts in
order to validate correlation between log transformed Centroid Size (as
independent variable) and Shape variables (that in my case are
represented by the relative warps scores). Could it be possible to apply
such a method on relative warp scores or not? I have never seen such
analysis (on relative warp scores) before in bibliography and every
title relevant to the subject is welcome. On a preliminary analyses (in
my data) the association -tested with simple linear regression through
the origin- between independent contrasts (IC) of centroid size and IC
of relative warp score (RWs) is significant only for the second and the
third RWs. With a simple linear regression (non-corrected for phylogeny)
centroid size is positively associated with the first and the second
relative warp scores -not the third-. These resuls are quite contradictory.
What do you think? Any comments also on alternative method?
Many thanks in advance to your help
Carlo Meloro
Carlo Meloro
Phd student in Earth Science
Dipartimento di Scienze della Terra
Università degli studi di Napoli "Federico II"
L.go San Marcellino 10
80138, Napoli, Italy
phone: ++39 0812538331
e-mail: [EMAIL PROTECTED]
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