title: Effects of Behavioural Strategy on the Exploitative Competition Dynamics.
abstract: We investigate a system of two species exploiting a common resource. We consider both abiotic (i.e. with a constant resource supply rate) and biotic (i.e. with resource reproduction and self-limitation) resources. We are interested in the asymmetric competition where a given consumer is the locally superior resource exploiter (LSE) and the other is the locally inferior resource exploiter (LIE). They also interact directly via interference competition in the sense that LIE individuals can use two opposite strategies to compete with LSE individuals: we assume, in the first case, that LIE uses an avoiding strategy, i.e. LIE individuals go to a non-competition patch to avoids competition with LSE individuals, and in the second one, LIE uses an aggressive strategy, i.e. being very aggressive so that LSE individuals have to go to a non-competition patch. We further assume that there is no resource in the non-competition patch so that individuals have to come back to the competition patch for their maintenance, and the migration process acts on a fast time scale in comparison with demography and competition processes. The models show that being aggressive is efficient for LIE's survival and even provoke global extinction of the LSE and this result does not depend on the nature of resource.
authors: Faculty of Computer Science and Engineering, Thuyloi University, No 175, Tay Son Street, Hanoi, Vietnam.|UMI UMMISCO 209, IRD/UPMC Paris 6, 32 Avenue Henri Varagnat, 93143, Bondy Cedex, France.
authors: Doanh
authors: D
authors: Nguyen-Ngoc
authors: School of Applied Mathematics and Informatics, Hanoi University of Science and Technology, No 1, Dai Co Viet Street, Hanoi, Vietnam. thuynpsami@gmail.com.
authors: Thuy
authors: T
authors: Nguyen-Phuong
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D002415:Cats / Q000145:classification / Q000502:physiology / Q000523:psychology*; D003163:Competitive Behavior / Q000502:physiology*; D003198:Computer Simulation; D008962:Models, Theoretical; D011157:Population Dynamics
keywords: Abiotic resource; Aggregation of variables; Behavioural strategy; Biotic resource; Exploitative competition; Interference competition; Migration; Time scales