Event Detail

Event Type: 
Mathematical Biology Seminar
Thursday, April 10, 2014 - 05:00
KIDD 278

Speaker Info


We are studying contemporary evolution in the timing of life cycle events in a marginal,
mountain population of an insect species redistributed from a lowland source for biological
control of an invasive plant species.  We investigated a reaction-diffusion model consisting
of a set of coupled, partial differential equations used to describe evolution in populations
undergoing range expansion.  One equation describes the rate of spatial spread as a function
of population growth and movement rates.  The other equation describes rates of evolution in
a phenotypic trait as a function of gene flow, phenotypic variation and heritability, and the
strength of directional selection acting on the trait.  I hope to spark discussion of possible
elaborations on this basic theme to discover how contemporary evolution influences ecological
dynamics of range expansion under conditions of anthropogenic change.  Preliminary results
show that when we intervene in the eco-evolutionary dynamics of ecological systems, unexpected
and possibly undesirable impacts can occur.