Results 11 to 20 of about 9,387,316 (229)

Allee effect in exotic and introduced blowflies [PDF]

open access: yesNeotropical Entomology, 2011
We combined two models to investigate the theoretical dynamics of five exotic and native blowfly species in response to the Allee effect by using demographic parameters estimated from experimental populations. Most of the results suggest stabilization of dynamic behavior in response to the Allee effect. However, the results depended on the magnitude of
Serra, H, Costa, Mis, Godoy, Wac
openaire   +5 more sources

Allee-Effect-Induced Instability in a Reaction-Diffusion Predator-Prey Model [PDF]

open access: yesAbstract and Applied Analysis, 2013
We investigate the spatiotemporal dynamics induced by Allee effect in a reaction-diffusion predator-prey model. In the case without Allee effect, there is nonexistence of diffusion-driven instability for the model.
Weiming Wang   +3 more
doaj   +2 more sources

Allee effects in ants [PDF]

open access: yesJournal of Animal Ecology, 2013
SummaryAllee effects occur when the aggregation of individuals result in mutually beneficial intraspecific interactions whereby individual fitness, or per capita growth rate, increases with the number of individuals. Allee effects are common in social species due to their cooperative behaviours, such as breeding, feeding or defence.
Luque, Gloria   +2 more
openaire   +5 more sources

Pattern Formation in a Reaction-Diffusion Predator-Prey Model with Weak Allee Effect and Delay

open access: yesComplexity, 2019
In this paper, we establish a reaction-diffusion predator-prey model with weak Allee effect and delay and analyze the conditions of Turing instability. The effects of Allee effect and delay on pattern formation are discussed by numerical simulation.
Hua Liu   +5 more
doaj   +2 more sources

Asymmetrical Impact of Allee Effect on a Discrete-Time Predator-Prey System [PDF]

open access: yesJournal of Applied Mathematics, 2013
A discrete-time predator-prey model is proposed with Leslie-type numerical response, and the asymmetrical influence of Allee effect on the proposed system is investigated.
Wenting Wang, Yujuan Jiao, Xiuping Chen
doaj   +2 more sources

Dynamic Complexities in 2-Dimensional Discrete-Time Predator-Prey Systems with Allee Effect in the Prey [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2016
The Allee effect is incorporated into a predator-prey model with linear functional response. Compared with the predator-prey which only takes the crowding effect and predator partially dependent on prey into consideration, it is found that the Allee ...
Jie Yan   +3 more
doaj   +2 more sources

On a 2D Model of Avascular Tumor with Weak Allee Effect

open access: yesJournal of Applied Mathematics, 2019
Recent studies reveal that Allee effect may play important roles in the growth of tumor. We present one of the first mathematical models of avascular tumor that incorporates the weak Allee effect. The model considers the densities of tumor cells in three
Peng Feng, Zhewei Dai, Dorothy Wallace
doaj   +2 more sources

Allee effect increasing the final density of the species subject to the Allee effect in a Lotka–Volterra commensal symbiosis model

open access: yesAdvances in Difference Equations, 2018
A Lotka–Volterra commensal symbiosis model with first species subject to the Allee effect is proposed and studied in this paper. Local and global stability property of the equilibria are investigated.
Qifa Lin
doaj   +2 more sources

An effective Allee effect may induce the survival of low-density predator

open access: yesResults in Physics, 2023
Allee effect, as one of the research hotspots in ecology and conservation biology, extremely easily affects the distribution of population in space, especially for the low-density population. In the ecosystem, the spatial distribution of predator is more
Li-Ying Ning   +5 more
doaj   +1 more source

Spawner weight and ocean temperature drive Allee effect dynamics in Atlantic cod, Gadus morhua: inherent and emergent density regulation [PDF]

open access: yesBiogeosciences, 2023
Stocks of Atlantic cod, Gadus morhua, show diverse recovery responses when fishing pressure is relieved. The expected outcome of reduced fishing pressure is that the population regains its size.
A.-M. Winter   +3 more
doaj   +1 more source

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