Despite these conflicting results, allelic variation in each of these genes is potentially consistent with a direct relationship with migratory behavior (see below), suggesting that these genes may indeed be important to the evolution of migratory and breeding behavior.
One effect of the evolution of migratory behaviour on niche characteristics is that the environmental niche of migratory birds during the breeding season may be less conserved than in the winter range (Martinez-Meyer et al., 2004).
"If correct, it would shed light on the forces driving migratory behavior and the evolution of migration itself".
A number of field and laboratory studies on behavioural decisions have supported the model [20] and it has also been suggested that this general framework may be useful in understanding the evolution of migratory behaviour in fish [21] [25].
Given its importance, a substantial amount of work has been done to understand the evolution of migratory behaviour and its consequences for population and community dynamics [1], [6], [7].
Migration is a common phenomenon in many organisms, terrestrial as well as aquatic, and considerable effort has been spent to understand the evolution of migratory behaviour and its consequences for population and community dynamics.
This suggests that species niche characteristics during residency in the breeding range may become labile during the evolution of migratory behaviour.
The expression of Reelin has been examined in extant vertebrates and appears to have been amplified in mammals, consistent with a role in the evolution of migratory mechanisms that led to the formation of laminated neocortex (Bar et al. 2000; Tissir et al. 2002).
The evolution of the migratory cells is described by a diffusion reaction equation of non Fickian type deduced considering a mass conservation law with a non Fickian migratory mass flux.
De novo migratory mutations cannot explain the evolution of high rates of migration observed in our models.
