n African Entomology - Population dynamics of Chrysomya megacephala (Diptera : Calliphoridae) at different temperatures
|Article Title||Population dynamics of Chrysomya megacephala (Diptera : Calliphoridae) at different temperatures|
|© Publisher:||Entomological Society of South Africa (ESSA)|
|Author||I.C.R. Silva, W.A.C. Godoy, C.J. Von Zuben and P.F.A. Mancera|
|Publication Date||Sep 2004|
|Pages||157 - 163|
|Keyword(s)||Chrysomya megacephala, Competition, Mathematical model, Population dynamics and Temperatures|
In this study we analysed the theoretical population dynamics of C. megacephala, an exotic blowfly, kept at 25 and 30 °C, using a density-dependent mathematical model, with parametric estimates of survival and fecundity in the laboratory. No change in terms of oscillation patterns was found for the two temperatures. The populations exhibited a two-point limit cycle, i.e. oscillations between two fixed points, at 25 and 30 °C. However, a quantitative change was observed, indicating that at 25 °C the number of immatures in equilibrium is 1176 and at 30 °C, 1944. The implications of this difference in terms of equilibrium for population dynamics of C. megacephala are discussed.
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