In the following, the results from an experiment simulating the emergence of a plant virus that crossed the species barrier and is horizontally spreading on a population of partially-susceptible hosts are reported.
The collective spreading of a population of cells is driven by both cell motility and cell proliferation [ 1– 4, 18].
For example, Fagan et al. (2002) theoretically examined the capacity of specialist and generalist natural enemies in reducing the spread of a pest population showing different levels of Allee effect.
The simple model of flame propagation and the spread of a biological populations, where u = u ( x, t ), k ( x ) denote the temperature and density respectively, are given by the equation in problem (1).
It does not predict the likelihood of EVD spillover, the likelihood of an outbreak establishing, or its subsequent rate of spread within a population.
The deviation from the mean, in the case of symmetric distributions, or deviation from the median, in the case of skewed distributions, can be used as a measure of spread in a population.
An important application of T 1 y) refers to the mean deviations about the mean and about the median, which can be used as measures of spread in a population.
The rate of spread through a population will depend upon the host mating system [ 8].
Therefore, the spread of a clonal bacterial population within Ghana cannot be discounted.
In this paper, we present evidence for the enhanced potential for growth and spread of a small introduced population of organisms faced with Allee effects when adaptation occurs.
