Data

\(n = 20\) carnivore species, trait \(y =\) body mass (in log10 scale)

## Le chargement a nécessité le package : ade4
##   Ursus_maritimus      Ursus_arctos  Ursus_americanus      Nasua_narica 
##             2.432             2.400             1.970             0.643 
##     Procyon_lotor Mephitis_mephitis 
##             0.845             0.398

Phylogenetic tree

##                Genre.espèce         Nom.commun
## 1           Ursus maritimus       Ours polaire
## 2              Ursus arctos Ours brun d'Europe
## 3          Ursus americanus     Ours américain
## 4              Nasua narica  Coati à nez blanc
## 5             Procyon lotor       Raton laveur
## 6         Mephitis mephitis    Mouffette rayée
## 7               Meles meles           Blaireau
## 8               Canis lupus          Loup gris
## 9             Canis latrans             Coyote
## 10            Lycaon pictus             Lycaon
## 11             Canis aureus             Chacal
## 12 Urocyon cinereoargenteus        Renard gris
## 13             Vulpes fulva        Renard roux
## 14            Hyaena hyaena        Hyène rayée
## 15          Crocuta crocuta     Hyène tachetée
## 16         Acionayx jubatus            Guépard
## 17          Panthera pardus            Léopard
## 18          Panthera tigris              Tigre
## 19             Panthera leo               Lion

Covariance matrix

Brownian model

## $mu
## [1] 1.418421
## 
## $sigma2
## [1] 0.01222523
## 
## $logL
## [1] 2.264297e-05

Ancestral traits

##        pred     l95CI    u95CI
## 20 1.348799 0.4694875 2.228110
## 21 1.293212 0.4962710 2.090153
## 22 1.294488 0.5445653 2.044410
## 23 2.168003 1.8290152 2.506992
## 24 2.354000 2.1358438 2.572156
## 25 1.005390 0.3211946 1.689585

Phylogenetic signal

Pagel’s transform

MLE of \(\lambda\)

Test of \(H_0 = \{\lambda = 0\}\)

## LRT =  15.45315  p-value =  8.457602e-05

Test of \(H_0 = \{\lambda = 1\}\)

## LRT =  0.4948332  p-value =  0.4817792