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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 96, No. 5, 2001, pp. 627-634
Bioline Code: oc01095
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 96, No. 5, 2001, pp. 627-634

 en Spatio-temporal Dynamics and Transition from Asymptotic Equilibrium to Bounded Oscillations in Chrysomya albiceps (Diptera, Calliphoridae)
Wesley Augusto Conde Godoy; Fernando José Von Zuben; Cláudio José Von Zuben & Sérgio Furtado dos Reis

Abstract

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.

Keywords
spatial dynamics, sensitivity analysis, Chrysomya albiceps

 
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