6 Citations (Scopus)

Abstract

The impact of a macroparasite on a host population which can exhibit highly complex dynamics is considered. We focus on the case where the host reproduces annually, in which case we couple within-season density dependent interactions with a discrete-time pulse to reflect seasonal reproduction. Results from analytic arguments, supported by extensive numerical simulations, indicate that within season parasite-induced host mortality is potentially capable of stabilising and simplifying host dynamics. Moreover, the interaction of demographic processes occurring on different time-scales is, in some cases, stabilising. In particular, parasite reduction in host fecundity, which is a destabilising process in the May & Anderson continuous time model, is found to stabilise host macroparasite interactions under certain conditions. These results are discussed in an ecological context.
Original languageEnglish
Pages (from-to)81-91
JournalJournal of Theoretical Biology
Volume186
DOIs
Publication statusPublished - 7 May 1997

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Complex Dynamics
Parasites
Interaction
Anderson Model
Continuous-time Model
Mortality
Reproduction
Fertility
Computer simulation
Discrete-time
Time Scales
Demography
parasites
Numerical Simulation
Dependent
Population
fecundity
demographic statistics

Cite this

Regulation of complex host dynamics by a macroparasite. / White, Katrin; Grenfell, B T .

In: Journal of Theoretical Biology, Vol. 186, 07.05.1997, p. 81-91.

Research output: Contribution to journalArticle

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