Integrodifference model for blowfly invasion
Nenhuma Miniatura disponível
Data
2012-08-01
Autores
Coutinho, Renato Mendes [UNESP]
Conde Godoy, Wesley Augusto
Kraenkel, Roberto André [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer Heidelberg
Resumo
We propose a stage-structured integrodifference model for blowflies' growth and dispersion taking into account the density dependence of fertility and survival rates and the non-overlap of generations. We assume a discrete-time, stage-structured, model. The spatial dynamics is introduced by means of a redistribution kernel. We treat one and two dimensional cases, the latter on the semi-plane, with a reflexive boundary. We analytically show that the upper bound for the invasion front speed is the same as in the one-dimensional case. Using laboratory data for fertility and survival parameters and dispersal data of a single generation from a capture-recapture experiment in South Africa, we obtain an estimate for the velocity of invasion of blowflies of the species Chrysomya albiceps. This model predicts a speed of invasion which was compared to actual observational data for the invasion of the focal species in the Neotropics. Good agreement was found between model and observations.
Descrição
Palavras-chave
Biological invasions, Velocity prediction, Integrodifference equations, Stage structure, Blowfly dynamics, Two-dimensional redistribution kernel
Como citar
Theoretical Ecology. Heidelberg: Springer Heidelberg, v. 5, n. 3, p. 363-371, 2012.