Abstract
Systems analysis of density-dependent population processes was conducted in an experimental population of the azuki bean weevil,Callosobruchus chinensis. Density-dependent population change was formulated for two separate processes; adult production of eggs and hatching of the eggs outside the beans, and survival of the first instar larvae inside the beans and their emergence as new adults. The formulation of each process was based on a common basic equation modified from the logistic-difference equation. Parametric values were estimated from experimental data onC. chinensis in a laboratory population.
Simulations of the model showed good fits not only to observed population changes both outside and inside the beans, but also to the observed reproduction curve reflecting the population change as a whole within one generation in an experimental population.
Furthermore, population dynamics from generation to generation were simulated from the model reproduction curve. The simulation showed a slight dumped oscillation and converged to a carrying capacity, which fitted well with the experimental population dynamics.
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Shimada, M. Systems analysis of density-dependent population processes in the azuki bean weevil,Callosobruchus chinensis . Ecol. Res. 4, 145–156 (1989). https://doi.org/10.1007/BF02347147
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DOI: https://doi.org/10.1007/BF02347147