Anomalous invasion dynamics due to dispersal polymorphism and dispersal-reproduction trade-offs.

ABSTRACT: Dispersal polymorphism and mutation play significant roles during biological invasions, potentially leading to evolution and complex behaviour such as accelerating or decelerating invasion fronts. However, life-history theory predicts that reproductive fitness-another key determinant of invasion dynamics-may be lower for more dispersive strains. Here, we use a mathematical model to show that unexpected invasion dynamics emerge from the combination of heritable dispersal polymorphism, dispersal-fitness trade-offs, and mutation between strains. We show that the invasion dynamics are determined by the trade-off relationship between dispersal and population growth rates of the constituent strains. We find that invasion dynamics can be 'anomalous' (i.e. faster than any of the strains in isolati

SUBMITTER: Keenan VA 

PROVIDER: S-EPMC7892423 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature