Accepted:
December 2004
| |
/vol12/msid46/ | © Copyright 2008 | |||
| Volume 12 | Received: Accepted: |
November 2004 December 2004 |
|||
|
A Spatially-Explicit Model of Genetic Tradeoff
Peter A. Whigham and David Green |
|
| Abstract | |
| Spatially-explicit, individual based models are used to explore the consequences of introducing two simple genetic tradeoff mechanisms to the gradient response of monoecious diploid individuals. A simple linear gradient is used to produce a structured environment. One tradeoff relates the plasticity of an individual to its overall fitness, where individuals that can tolerate a wide range of environmental values are less fit than individuals with a narrow tolerance range. The second tradeoff assumes that individuals that can live at greater environmental values are placed under stress and therefore reach maturity later in their life cycle. Here all individuals have the same fitness, but the penalty for tradeoff is less time for breeding after reaching maturity. In both cases the resulting population distributions produced clear genetic differentiation, showing that simple tradeoff mechanisms are one route towards genetic isolation and, ultimately, speciation. | |
| Full Text |
|
|
Multimedia Links (none) Reference Links (none) Citation Reference Peter A. Whigham, David Green 2008, A Spatially-Explicit Model of Genetic Tradeoff, Complexity International, Volume 12, Paper ID: msid46, URL: http://www.complexity.org.au/vol12/msid46/ |
Get viewers for PS & PDF   |
