𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A host–parasitoid interaction with Allee effects on the host

✍ Scribed by Sophia R.-J. Jang; Sandra L. Diamond

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
474 KB
Volume
53
Category
Article
ISSN
0898-1221

No coin nor oath required. For personal study only.

✦ Synopsis

We explore the addition of Allee effects to single-species discrete-time models with overcompensatory density dependence. When the intrinsic growth rate of the population, r , is large, the population bifurcates into chaos. The population goes extinct if r is either below a threshold level or very large. The model is then used to study host-parasitoid interactions with and without Allee effects in the host. The coexistence of the host and parasitoid populations both depends on threshold levels of r , threshold levels of the host population size, and the parasitoid potential, which is the product of the searching efficiency of the parasitoid for the host, and the fecundity of the parasitoid. The addition of Allee effects has a negative impact on the coexistence of both populations.

📜 SIMILAR VOLUMES

Effects of a nonsteroidal ecdysone agoni
Effects of a nonsteroidal ecdysone agonist, tebufenozide, on host/parasitoid interactions
✍ Dr. John J. Brown 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 872 KB

Tebufenozide (RH-5992), a nonsteroidal ecdysone agonist, stimulated significant ( P 2 0.05) growth in both testes of post-diapausing codling moth larvae and a dormant Ascogaster larva in its overwintering host's hemocoel. Tebufenozide elicited the same responses in post-diapausing testes and Ascogas

The Effect of Evolution on Host–Parasito
The Effect of Evolution on Host–Parasitoid Systems
✍ RYUSUKE KON; YASUHIRO TAKEUCHI 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 455 KB

It is well known that a simple "rst-order di!erence equation can exhibit complex population dynamics, such as sustained oscillations and chaos. An interesting problem is whether such oscillatory dynamics are expected to occur in real populations. This paper assumes that the resident system is compos

The Effects of a Pool of Dispersers on H
The Effects of a Pool of Dispersers on Host-parasitoid Systems
✍ W.W. Weisser; V.A.A. Jansen; M.P. Hassell 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 271 KB

When individuals migrate in a multi-patch environment, a considerable proportion of their lifetime might be spent in transit between patches. We investigate the effects such a pool of dispersers can have on local stability and dynamics for a variety of multi-patch host-parasitoid models. When an arb

The nonlinear analysis on a discrete hos
The nonlinear analysis on a discrete host-parasitoid model with pesticidal interference
✍ En-Guo Gu 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 484 KB

A host-parasitoid model with a pesticidal interference is investigated. The global bifurcations of feasible sets and domains, caused by pesticide-related mortality, are given in the light of some recent results on iterated maps with vanishing denominator giving rise to non-classical singularities: a