@ARTICLE{TreeBASE2Ref19742,
author = {David Collar and James A Schulte II and Jonathan B. Losos},
title = {Evolution of extreme body size disparity in monitor lizards (Varanus)},
year = {2011},
keywords = {Brownian motion, evolutionary allometry, habitat use, Ornstein-Uhlenbeck process, phylogenetic comparative methods, Varanidae},
doi = {},
url = {http://},
pmid = {},
journal = {Evolution},
volume = {},
number = {},
pages = {},
abstract = {Many features of species? biology, including life history, physiology, morphology and ecology, are tightly linked to body size. Investigation into the causes of size divergence is therefore critical to understanding the factors shaping phenotypic diversity within clades. In this study, we examined size evolution in monitor lizards (Varanus), a clade that includes the largest extant lizard species, the Komodo dragon (V. komodoensis), as well as diminutive species that are nearly four orders of magnitude smaller in adult body mass. We demonstrate that the remarkable body size disparity of this clade is a consequence of different selective demands imposed by three major habitat use patterns?arboreality, terrestriality, and rock-dwelling. We reconstructed phylogenetic relationships and ancestral habitat use and applied model selection to determine that the best-fitting evolutionary models for species? adult size are those that infer oppositely directed adaptive evolution associated with terrestriality and rock-dwelling, with terrestrial lineages evolving extremely large size and rock-dwellers becoming very small. We also show that habitat use affects the evolution of several ecologically important morphological traits independently of body size divergence. These results suggest that habitat use exerts a strong, multi-dimensional influence on the evolution of morphological size and shape disparity in monitor lizards.}
}
Citation for Study 11554
Citation title:
"Evolution of extreme body size disparity in monitor lizards (Varanus)".
Study name:
"Evolution of extreme body size disparity in monitor lizards (Varanus)".
This study is part of submission 11544
(Status: Published).
Citation
Collar D., Schulte ii J.A., & Losos J. 2011. Evolution of extreme body size disparity in monitor lizards (Varanus). Evolution, .
Authors
-
Collar D.
(submitter)
5302200110
-
Schulte ii J.A.
315-268-4401
-
Losos J.
Abstract
Many features of species? biology, including life history, physiology, morphology and ecology, are tightly linked to body size. Investigation into the causes of size divergence is therefore critical to understanding the factors shaping phenotypic diversity within clades. In this study, we examined size evolution in monitor lizards (Varanus), a clade that includes the largest extant lizard species, the Komodo dragon (V. komodoensis), as well as diminutive species that are nearly four orders of magnitude smaller in adult body mass. We demonstrate that the remarkable body size disparity of this clade is a consequence of different selective demands imposed by three major habitat use patterns?arboreality, terrestriality, and rock-dwelling. We reconstructed phylogenetic relationships and ancestral habitat use and applied model selection to determine that the best-fitting evolutionary models for species? adult size are those that infer oppositely directed adaptive evolution associated with terrestriality and rock-dwelling, with terrestrial lineages evolving extremely large size and rock-dwellers becoming very small. We also show that habitat use affects the evolution of several ecologically important morphological traits independently of body size divergence. These results suggest that habitat use exerts a strong, multi-dimensional influence on the evolution of morphological size and shape disparity in monitor lizards.
Keywords
Brownian motion, evolutionary allometry, habitat use, Ornstein-Uhlenbeck process, phylogenetic comparative methods, Varanidae
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S11554
- Other versions:
Nexus
NeXML
- Show BibTeX reference
@ARTICLE{TreeBASE2Ref19742,
author = {David Collar and James A Schulte II and Jonathan B. Losos},
title = {Evolution of extreme body size disparity in monitor lizards (Varanus)},
year = {2011},
keywords = {Brownian motion, evolutionary allometry, habitat use, Ornstein-Uhlenbeck process, phylogenetic comparative methods, Varanidae},
doi = {},
url = {http://},
pmid = {},
journal = {Evolution},
volume = {},
number = {},
pages = {},
abstract = {Many features of species? biology, including life history, physiology, morphology and ecology, are tightly linked to body size. Investigation into the causes of size divergence is therefore critical to understanding the factors shaping phenotypic diversity within clades. In this study, we examined size evolution in monitor lizards (Varanus), a clade that includes the largest extant lizard species, the Komodo dragon (V. komodoensis), as well as diminutive species that are nearly four orders of magnitude smaller in adult body mass. We demonstrate that the remarkable body size disparity of this clade is a consequence of different selective demands imposed by three major habitat use patterns?arboreality, terrestriality, and rock-dwelling. We reconstructed phylogenetic relationships and ancestral habitat use and applied model selection to determine that the best-fitting evolutionary models for species? adult size are those that infer oppositely directed adaptive evolution associated with terrestriality and rock-dwelling, with terrestrial lineages evolving extremely large size and rock-dwellers becoming very small. We also show that habitat use affects the evolution of several ecologically important morphological traits independently of body size divergence. These results suggest that habitat use exerts a strong, multi-dimensional influence on the evolution of morphological size and shape disparity in monitor lizards.}
}
- Show RIS reference
TY - JOUR
ID - 19742
AU - Collar,David
AU - Schulte II,James A
AU - Losos,Jonathan B.
T1 - Evolution of extreme body size disparity in monitor lizards (Varanus)
PY - 2011
KW - Brownian motion
KW - evolutionary allometry
KW - habitat use
KW - Ornstein-Uhlenbeck process
KW - phylogenetic comparative methods
KW - Varanidae
UR - http://dx.doi.org/
N2 - Many features of species? biology, including life history, physiology, morphology and ecology, are tightly linked to body size. Investigation into the causes of size divergence is therefore critical to understanding the factors shaping phenotypic diversity within clades. In this study, we examined size evolution in monitor lizards (Varanus), a clade that includes the largest extant lizard species, the Komodo dragon (V. komodoensis), as well as diminutive species that are nearly four orders of magnitude smaller in adult body mass. We demonstrate that the remarkable body size disparity of this clade is a consequence of different selective demands imposed by three major habitat use patterns?arboreality, terrestriality, and rock-dwelling. We reconstructed phylogenetic relationships and ancestral habitat use and applied model selection to determine that the best-fitting evolutionary models for species? adult size are those that infer oppositely directed adaptive evolution associated with terrestriality and rock-dwelling, with terrestrial lineages evolving extremely large size and rock-dwellers becoming very small. We also show that habitat use affects the evolution of several ecologically important morphological traits independently of body size divergence. These results suggest that habitat use exerts a strong, multi-dimensional influence on the evolution of morphological size and shape disparity in monitor lizards.
L3 -
JF - Evolution
VL -
IS -
ER -
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