کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4496485 1623889 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the evolutionary stability of partial migration
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
On the evolutionary stability of partial migration
چکیده انگلیسی

The evolution of partial migration in birds is typically assumed to be the result of an optimization process. The fitness rewards for individuals choosing to migrate are balanced against the rewards of remaining in the breeding area all year around. This balancing is often thought to result in an evolutionarily stable strategy (ESS) such that an optimal fraction of the population becomes migratory through adaptive evolution. Here I show that this solution can indeed be reached through adaptive evolution, but that the equilibrium is a neutral or “weak” ESS. The equilibrium fraction of migrants is more reminiscent of the Fisherian sex ratio. I also show that this individual-based evolutionary solution may deviate significantly from the optimal solution for the population (maximum population size), quite in line with previous findings. Finally, I show that partial migration is very unlikely without density- or frequency-dependent selection.


► The evolutionary solution to the partial migration game is not necessarily an ESS.
► Individual-based evolutionary solution deviates from the optimal solution for the population.
► Partial migration is unlikely to evolve without frequency- or density-dependent selection.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Theoretical Biology - Volume 321, 21 March 2013, Pages 36–39
نویسندگان
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