Dynamic effects of inducible defenses in a one-prey two-predators system

Rodrigo Ramos-Jiliberto, Hector Duarte and Ernesto Frodden

Ecological Modelling, 2008, vol. 214, issue 2, 242-250

Abstract: Inducible defenses influence the dynamics of both the prey exhibiting the response and its predator, but it could affect indirectly other populations in the community. Earlier studies concerned with population dynamics of species exhibiting inducible defenses mostly considered simple one-prey-one-predator systems. In this work we analyze the dynamics of a system with a single prey exhibiting inducible defenses, and two predators. Particularly, we show the long-term stability of the systems as a function of effectiveness and costs of inducible defenses. Eight specific model systems are numerically studied, representing a set of biologically plausible interactions. The models are parameterized from published experimental information. Our results indicate that inducible defenses and costs favor system stability. The specificity of the defensive response increases coexistence probability. Complex dynamics, including coexistence of two and three attractors, emerge when two induced defensive traits operate simultaneously.

Keywords: Antipredator behavior; Stability; Bistability; Bifurcation; Indirect effects; Multipredator environment (search for similar items in EconPapers)
Date: 2008
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S030438000800077X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:214:y:2008:i:2:p:242-250

DOI: 10.1016/j.ecolmodel.2008.02.004

Access Statistics for this article

Ecological Modelling is currently edited by Brian D. Fath

More articles in Ecological Modelling from Elsevier
Bibliographic data for series maintained by Catherine Liu ().