The joint impacts of dispersal delay and dispersal patterns on the stability of predator-prey metacommunities.
Dispersal delay
Metapopulation
Predator-prey
Stability switch
Journal
Journal of theoretical biology
ISSN: 1095-8541
Titre abrégé: J Theor Biol
Pays: England
ID NLM: 0376342
Informations de publication
Date de publication:
07 02 2019
07 02 2019
Historique:
received:
29
08
2018
revised:
23
10
2018
accepted:
28
11
2018
pubmed:
7
12
2018
medline:
24
3
2020
entrez:
4
12
2018
Statut:
ppublish
Résumé
A predator-prey metapopulation model over arbitrary number of patches is considered in this paper. The model assumes that only prey move (with a dispersal delay) between all connected patches. Two cases of dispersal patterns are considered. For the case the dispersal of prey is due to random effect only (independent of predator density), we show that either the dispersal delay is harmless in the sense that it does not affect the stability of the metacommunity, or the dispersal delay can induce stability switches with finite number of stability intervals. For the case the dispersal of prey is due to predator-avoidance (dependent on predator density), we show that the interplay of density-dependent dispersal and dispersal delay may also induce finite number of stability switches. This indicates that the combination of the density-dependent dispersal and dispersal delay can exhibit both stabilizing and destabilizing effects on the stability of the coexistence equilibrium. Our results show that the delay and the patterns of prey dispersal jointly affect the stability of predator-prey metacommunities and can induce multiple stability switches.
Identifiants
pubmed: 30502408
pii: S0022-5193(18)30588-5
doi: 10.1016/j.jtbi.2018.11.035
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
455-465Informations de copyright
Copyright © 2018 Elsevier Ltd. All rights reserved.