Spatio-temporal Dynamics and Transition from Asymptotic Equilibrium to Bounded Oscillations in Chrysomya albiceps (Diptera, Calliphoridae)

The sensitivity of parameters that govern the stability of population size in Chrysomya albiceps and describe its spatial dynamics was evaluated in this study. The dynamics was modeled using a density-dependent model of population growth. Our simulations show that variation in fecundity and mainly i...

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Bibliographic Details
Published in:Memórias do Instituto Oswaldo Cruz 2001-07, Vol.96 (5), p.627-634
Main Authors: Godoy, W A, Von Zuben, F J, Von Zuben, C J, dos Reis, S F
Format: Article
Language:English
Subjects:
Animals
Chrysomya albiceps
Diptera - growth & development
Diptera - physiology
Female
Fertility
Models, Biological
PARASITOLOGY
Population Dynamics
Regression Analysis
sensitivity analysis
spatial dynamics
spatial dynamics, sensitivity analysis, Chrysomya albiceps
TROPICAL MEDICINE
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Summary:The sensitivity of parameters that govern the stability of population size in Chrysomya albiceps and describe its spatial dynamics was evaluated in this study. The dynamics was modeled using a density-dependent model of population growth. Our simulations show that variation in fecundity and mainly in survival has marked effect on the dynamics and indicates the possibility of transitions from one-point equilibrium to bounded oscillations. C. albiceps exhibits a two-point limit cycle, but the introduction of diffusive dispersal induces an evident qualitative shift from two-point limit cycle to a one fixed-point dynamics. Population dynamics of C. albiceps is here compared to dynamics of Cochliomyia macellaria, C. megacephala and C. putoria.
ISSN:1678-8060
0074-0276
0074-0276
1678-8060
DOI:10.1590/s0074-02762001000500006