Continuous-time models of host-parasitoid interactions
Article Abstract:
Three continuous-time models of host-parasitoid interactions in which hosts and parasitoids have overlapping generations are presented. Two models follow birth, death and dispersal within patches, such that the population dynamics can be explained in terms of asynchrony in the fluctuations of the populations in each patch. The third model considers instantaneous distributions of hosts and parasitoids among patches, and population dynamics can be explained in terms of the variability in the chance that a host will be parasitized. Spatial heterogeneity and parasitoid aggregation affect population dynamics differently in each model.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Density-dependent and density-independent parasitoid aggregation in model host-parasitoid systems
Article Abstract:
The results of density-dependent and density-independent parasitoid aggregation on population densities and dynamics was studied using a model for host-parasitoid interactions with discrete generations. Density-independent parasitoid aggregation was found to lower parasitism rates and stabilize population dynamics. Density-dependent parasitoid aggregation affected stability as a functional response of parasitoids to host density in patches.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Inferring host-parasitoid stability from patterns of parasitism among patches
Article Abstract:
A model is presented for extrapolating relationship stability among parasites and their hosts from individual pockets of occurrence. Steps include designating average parasitoid densities and number of parasites per patch host.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Evidence for contemporaneous yet contrasting styles of granite magmatism during extensional collapse of the northeast Greenland Caledonides
- Abstracts: Possible role of amphibole in the origin of andesite: some experimental and natural evidence. The influence of amphibole fractionation on the evolution of calc-alkaline andesite and dacite tephra from the central Aleutians, Alaska
- Abstracts: Tectonic history of the eastern edge of the Alexander Terrane, southeast Alaska. GPS-determination of along-strike variation in Cascadia margin kinematics: implications for relative plate motion, subduction zone coupling, and permanent deformation
- Abstracts: Relationship between northwestern Tasmania and East Gondwanaland in the Late Cambrian/Early Ordovician: paleomagnetic evidence