Results 11 to 20 of about 125,003 (280)

PREDATOR-PREY SYSTEMS IN PEST MANAGEMENT [PDF]

open access: yesNortheastern Journal of Agricultural and Resource Economics, 1991
The use of chemical pesticides frequently causes minor pests to become serious problems by disturbing the natural controls that keep them in check. As a result, it is possible to suffer heavier crop losses after pesticides are introduced than before ...
Harper, Carolyn R.
core   +4 more sources

Bistability induced by generalist natural enemies can reverse pest invasions [PDF]

open access: yes, 2016
Reaction-diffusion analytical modeling of predator-prey systems has shown that specialist natural enemies can slow, stop and even reverse pest invasions, assuming that the prey population displays a strong Allee effect in its growth.
Barles, Guy   +3 more
core   +4 more sources

Evolution in predator–prey systems

open access: yesStochastic Processes and their Applications, 2010
We study the adaptive dynamics of predator-prey systems modeled by a dynamical system in which the traits of predators and prey are allowed to evolve by small mutations. When only the prey are allowed to evolve, and the size of the mutational change tends to 0, the system does not exhibit long term prey coexistence and the trait of the resident prey ...
Durrett, Rick, Mayberry, John
openaire   +3 more sources

A non-autonomous stochastic predator-prey model

open access: yesMathematical Biosciences and Engineering, 2013
The aim of this paper is to consider a non-autonomous predator-prey-like system, with a Gompertz growth law for the prey.By introducing random variations in both prey birth and predator death rates,a stochastic model for the predator-prey-like system ...
Aniello Buonocore   +3 more
doaj   +1 more source

Impacts of predator–prey interaction on managing maximum sustainable yield and resilience

open access: yesNonlinear Analysis, 2020
This paper gives a broad outline of some comparative analysis of two ecological services, namely, yield and resilience of a generalist predator–prey system.
Kanisha Pujaru, Tapan Kumar Kar
doaj   +1 more source

Predator-Prey Relationships System

open access: yesInternational Journal of Computer Applications, 2016
Most of the ecological systems have the elements to produce divisions and dynamics behavior, and food chains are ecosystems with familiar structure. Modeling efforts of the dynamics of food chains which are initiated long ago confirm that food chains have very rich dynamics.
Alaa Khalaf, Taleb A.S.
openaire   +1 more source

A synthetic Escherichia coli predator–prey ecosystem [PDF]

open access: yes, 2008
We have constructed a synthetic ecosystem consisting of two Escherichia coli populations, which communicate bi-directionally through quorum sensing and regulate each other's gene expression and survival via engineered gene circuits.
Cynthia H Collins   +10 more
core   +3 more sources

Mathematical Analysis of Discrete Fractional Prey-Predator Model with Fear Effect and Square Root Functional Response

open access: yesCumhuriyet Science Journal, 2022
This paper investigates the dynamics of a discrete fractional prey-predator system. The prey-predator interaction is modelled using the square root functional response, which appropriately models systems in which the prey exhibits a strong herd structure,
Prasun Kumar Santra
doaj   +1 more source

Applying allometric scaling to predator-prey systems [PDF]

open access: yesPhysical Review E, 2019
In population dynamics, mathematical models often contain too many parameters to be easily testable. A way to reliably estimate parameters for a broad range of systems would help us obtain clearer predictions from theory. In this paper, we examine how the allometric scaling of a number of biological quantities with animal mass may be useful to ...
Eilersen, Andreas, Sneppen, Kim
openaire   +4 more sources

Multiple positive periodic solutions of a Gause-type predator-prey model with Allee effect and functional responses

open access: yesAIMS Mathematics, 2020
This paper deals with a Gause-type predator-prey model with Allee effect and Holling type III functional response. We also consider the influence of predator competition and the artificial harvesting on predator-prey system.
Shanshan Yu, Jiang Liu, Xiaojie Lin
doaj   +1 more source

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