Nisbet, R.M. and Gurney, William (1983) The systematic formulation of population models for insects with dynamically varying instar duration. Theoretical Population Biology, 23 (1). pp. 114-135. ISSN 0040-5809Full text not available in this repository. (Request a copy from the Strathclyde author)
We develop a formalism for insect population dynamics which covers the situation where maturation from one instar to its successor is triggered by weight gain and not by chronological age. We specify assumptions which result in the instantaneous “subpopulations” of various instars obeying delay-defferential equations with time delays (representing instar duration) which are themselves dynamic variables, changing in response to the availability of food. We demonstrate the stabilizing potential of variable time delays by studying an idealised two-stage model in which maturation to the adult stage occurs after absorption of a given (fixed) quantity of food.
|Keywords:||insect population dynamics, dynamic variables, instar duration, Probabilities. Mathematical statistics, Ecology, Evolution, Behavior and Systematics|
|Subjects:||Science > Mathematics > Probabilities. Mathematical statistics|
|Department:||Faculty of Science > Mathematics and Statistics|
|Depositing user:||Pure Administrator|
|Date Deposited:||19 Oct 2012 17:59|
|Last modified:||17 Jun 2016 03:06|