article · 10/10/2012
Front acceleration by dynamic selection in Fisher population waves
Résumé
We introduce a minimal model of population range expansion in which the phenotypes of individuals present no selective advantage and differ only in their diffusion rate. We show that such neutral phenotypic variability (i.e., that does not modify the growth rate) alone can yield phenotype segregation at the front edge, even in absence of genetic noise, and significantly impact the dynamical properties of the expansion wave. We present an exact asymptotic traveling wave solution and show analytically that phenotype segregation accelerates the front propagation. The results are compatible with field observations such as invasions of cane toads in Australia or bush crickets in Britain.
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Benichou, O., Calvez, V., Meunier, N., & Voituriez, R. (2012). Front acceleration by dynamic selection in Fisher population waves. PHYSICAL REVIEW E, 86(4, 1). https://doi.org/10.1103/PhysRevE.86.041908@article{Benichou2012_242,
author = {Benichou, O. and Calvez, V. and Meunier, N. and Voituriez, R.},
year = {2012},
month = {10},
title = {Front acceleration by dynamic selection in Fisher population waves},
journal = {PHYSICAL REVIEW E},
volume = {86},
number = {4, 1},
abstract = {We introduce a minimal model of population range expansion in which the phenotypes of individuals present no selective advantage and differ only in their diffusion rate. We show that such neutral phenotypic variability (i.e., that does not modify the growth rate) alone can yield phenotype segregation at the front edge, even in absence of genetic noise, and significantly impact the dynamical properties of the expansion wave. We present an exact asymptotic traveling wave solution and show analytically that phenotype segregation accelerates the front propagation. The results are compatible with field observations such as invasions of cane toads in Australia or bush crickets in Britain.},
url = {http://www.dx.doi.org/10.1103/PhysRevE.86.041908},
doi = {10.1103/PhysRevE.86.041908},
issn = {1539-3755},
}TY - JOUR
AU - Benichou, O.
AU - Calvez, V.
AU - Meunier, N.
AU - Voituriez, R.
PY - 2012
DA - 2012/10/10
TI - Front acceleration by dynamic selection in Fisher population waves
JO - PHYSICAL REVIEW E
VL - 86
IS - 4, 1
SN - 1539-3755
AB - We introduce a minimal model of population range expansion in which the phenotypes of individuals present no selective advantage and differ only in their diffusion rate. We show that such neutral phenotypic variability (i.e., that does not modify the growth rate) alone can yield phenotype segregation at the front edge, even in absence of genetic noise, and significantly impact the dynamical properties of the expansion wave. We present an exact asymptotic traveling wave solution and show analytically that phenotype segregation accelerates the front propagation. The results are compatible with field observations such as invasions of cane toads in Australia or bush crickets in Britain.
DO - 10.1103/PhysRevE.86.041908
UR - http://www.dx.doi.org/10.1103/PhysRevE.86.041908
ER -