Evolution of dispersal in a stepping-stone population with overlapping generations.

abstract：:The game-theoretic model in this paper provides micro-foundations for the effect a harsher environment on the probability of cooperation among multiple players. The harshness of the environment is alternatively measured by the degree of complementarity between the players' cooperative efforts in producing a public goo...

journal_title：Theoretical population biology

authors： De Jaegher K

更新日期：2017-02-01 00:00:00

abstract：:A method is proposed for reconstructing the time and age dependence of incidence rates from successive age-prevalence cross sections taken from the sentinel surveys of irreversible diseases when there is an important difference in mortality between the infected and susceptible subpopulations. The prevalence informatio...

journal_title：Theoretical population biology

authors： Brunet RC,Struchiner CJ

更新日期：1999-08-01 00:00:00

abstract：:We analyse sequential Markov coalescent algorithms for populations with demographic structure: for a bottleneck model, a population-divergence model, and for a two-island model with migration. The sequential Markov coalescent method is an approximation to the coalescent suggested by McVean and Cardin, and by Marjoram ...

journal_title：Theoretical population biology

authors： Eriksson A,Mahjani B,Mehlig B

更新日期：2009-09-01 00:00:00

abstract：:Difference in male and female effective population sizes has, at times, been attributed to both sexes having unequal variance in their number of offspring. Such difference is paralleled by the relative effective sizes of autosomes, sex chromosomes, and mitochondrial DNA. I develop a simple framework to calculate the i...

journal_title：Theoretical population biology

authors： Mendez FL

更新日期：2017-04-01 00:00:00

abstract：:During the past decade, mutations affecting liability to human disease have been discovered at a phenomenal rate, and that rate is increasing. For the most part, however, those diseases have a relatively simple genetic basis. For diseases with a complex genetic and environmental basis, new approaches are needed to pav...

journal_title：Theoretical population biology

authors： Devlin B,Roeder K,Wasserman L

更新日期：2001-11-01 00:00:00

abstract：:The role of graphical models in the assessment of transfer evidence is described with particular reference to the role of cross-transfer evidence. The issues involved in the determination of factors (nodes), associations (links) and probabilities to be included are discussed. Four types of subjective probabilities are...

journal_title：Theoretical population biology

authors： Aitken C,Taroni F,Garbolino P

更新日期：2003-05-01 00:00:00

abstract：:We consider a three-variable forest pest model, proposed by Rinaldi & Muratori (1992) [Rinaldi, S., Muratori, S., 1992. Limit cycles in slow-fast forest-pest models. Theor. Popul. Biol. 41, 26-43]. The model allows relaxation oscillations where long pest-free periods are interspersed with outbreaks of high pest concen...

journal_title：Theoretical population biology

authors： Brøns M,Kaasen R

更新日期：2010-06-01 00:00:00

abstract：:A diallelic two-locus model is investigated in which the loci determine the genotypic value of a quantitative trait additively. Fitness has two components: stabilizing selection on the trait and a frequency-dependent component, as induced, for instance, if the ability to utilize different food resources depends on thi...

journal_title：Theoretical population biology

authors： Bürger R

更新日期：2002-03-01 00:00:00

abstract：:The term Darwinian fitness refers to the capacity of a variant type to invade and displace the resident population in competition for available resources. Classical models of this dynamical process claim that competitive outcome is a deterministic event which is regulated by the population growth rate, called the Malt...

journal_title：Theoretical population biology

authors： Demetrius L,Ziehe M

更新日期：2007-11-01 00:00:00

abstract：:The Allee effect means reduction in individual fitness at low population densities. There are many discrete-time population models with an Allee effect in the literature, but most of them are phenomenological. Recently, Geritz and Kisdi [2004. On the mechanistic underpinning of discrete-time population models with com...

journal_title：Theoretical population biology

authors： Eskola HT,Parvinen K

更新日期：2007-08-01 00:00:00

abstract：:We examine the conditions under which spatial structure can mediate coexistence of apparent competitors. We use a spatially explicit, host-parasitoid metapopulation model incorporating local dynamics of Nicholson-Bailey type and global dispersal. Depending on the model parameters, the resulting system displays a pleth...

journal_title：Theoretical population biology

authors： King AA,Hastings A

更新日期：2003-12-01 00:00:00

abstract：:We consider hazard (mortality) rates in heterogeneous populations consisting of ordered (in the defined stochastic sense) subpopulations. This setting can be interpreted via the fixed frailty models with one or more frailty parameters. The shape of the hazard rate is of main interest in this paper. Specifically, the d...

journal_title：Theoretical population biology

authors： Finkelstein M

更新日期：2012-06-01 00:00:00

abstract：:We provide a general framework for estimating persistence in populations which may be affected by catastrophic events, and which are either unbounded or have very large ceilings. We model the population using a birth-death process modified to allow for downward jumps of arbitrary size. For such processes, it is typica...

journal_title：Theoretical population biology

authors： Cairns BJ,Pollett PK

更新日期：2005-08-01 00:00:00

abstract：:In this paper, we study the evolution of the per capita rate of reproduction as a function of time in the modelling framework introduced by Eskola and Geritz [Eskola, H.T.M., Geritz, S.A.H., 2007. On the mechanistic derivation of various discrete-time population models, Bull. Math. Biol. 69, 329-346]. We assume that t...

journal_title：Theoretical population biology

authors： Eskola HT

更新日期：2009-03-01 00:00:00

abstract：:We address the evolution of effective number of individuals under androdioecy and gynodioecy. We analyze dynamic models of autosomal modifiers of weak effect on sex expression. In our zygote control models, the sex expressed by a zygote depends on its own genotype, while in our maternal control models, it depends on t...

journal_title：Theoretical population biology

authors： Uyenoyama MK,Takebayashi N

更新日期：2017-12-01 00:00:00

abstract：:We consider a bitrophic spatially distributed community consisting of prey and actively moving predators. The model is based on the assumption that the spatial and temporal variations of the predators' velocity are determined by the prey gradient. Locally, the populations follow the simple Lotka-Volterra interaction. ...

journal_title：Theoretical population biology

authors： Arditi R,Tyutyunov Y,Morgulis A,Govorukhin V,Senina I

更新日期：2001-05-01 00:00:00

abstract：:Population persistence in patchy environments is expected to result from an interaction between local density dependence, dispersal, and spatial heterogeneity. Using two-patch models of single species, I explore two aspects of this interaction that have hitherto received little attention. First, how is the interaction...

journal_title：Theoretical population biology

authors： Amarasekare P

更新日期：1998-02-01 00:00:00

abstract：:Matrix-based models lie at the core of many applications across the physical, engineering and life sciences. In ecology, matrix models arise naturally via population projection matrices (PPM). The eigendata of PPMs provide detailed quantitative and qualitative information on the dynamic behaviour of model populations,...

journal_title：Theoretical population biology

authors： Hodgson D,Townley S,McCarthy D

更新日期：2006-09-01 00:00:00

abstract：:We generalize a recently introduced graphical framework to compute the probability that haplotypes or genotypes of two individuals drawn from a finite, subdivided population match. As in the previous work, we assume an infinite-alleles model. We focus on the case of a population divided into two subpopulations, but th...

journal_title：Theoretical population biology

authors： Malaspinas AS,Slatkin M,Song YS

更新日期：2011-05-01 00:00:00

abstract：:The effects of parasites on the behavior of their hosts are well documented. For example, parasites may affect the habitat selection of the host individual. We used variables aggregation methods to investigate the way in which parasites affect the spatial pattern of susceptible hosts. We developed a simple epidemiolog...

journal_title：Theoretical population biology

authors： Charles S,Morand S,Chassé JL,Auger P

更新日期：2002-09-01 00:00:00

abstract：:We analyse the evolution of the assortment of encounters through active choice of companions among individuals that interact cooperatively in a situation of mutual benefit. Using a simple mathematical model, we show that mutual benefit can favour the evolution of a preference to interact with individuals that are simi...

journal_title：Theoretical population biology

authors： Castro L,Toro MA

更新日期：2004-05-01 00:00:00

abstract：:Interactions between pollinators, nectar robbers, defensive plants and non-defensive plants are characterized by evolutionary games, where payoffs for the four species are represented by population densities at steady states in the corresponding dynamical systems. The plant-robber system is described by a predator-pre...

journal_title：Theoretical population biology

authors： Wang Y,Wu H,Sun S

更新日期：2012-05-01 00:00:00

abstract：:A variety of results for genealogical and line-of-descent processes that arise in connection with the theory of some classical selectively neutral population genetics models are reviewed. While some new results and derivations are included, the principle aim is to demonstrate the central importance and simplicity of g...

journal_title：Theoretical population biology

authors： Tavaré S

更新日期：1984-10-01 00:00:00

abstract：:The differences between DNA-sequences within a population are the basis to infer the ancestral relationship of the individuals. Within the classical infinitely many sites model, it is possible to estimate the mutation rate based on the site frequency spectrum, which is comprised by the numbers C1,…,Cn-1 where n is the...

journal_title：Theoretical population biology

authors： Baumdicker F

更新日期：2015-03-01 00:00:00

abstract：:Theoretical approaches are essential to our understanding of the complex dynamics of mobile genetic elements (MGEs) within genomes. Recently, the birth-death-diversification model was developed to describe the dynamics of mobile promoters (MPs), a particular class of MGEs in prokaryotes. A unique feature of this model...

journal_title：Theoretical population biology

authors： Drakos NE,Wahl LM

更新日期：2015-12-01 00:00:00

abstract：:For a population to acquire a complex adaptation requiring multiple individually neutral mutations, it must cross a plateau in the fitness landscape. We consider plateaus involving three mutations, and show that large populations can cross them rapidly via lineages that acquire multiple mutations while remaining at lo...

journal_title：Theoretical population biology

authors： Ghafari M,Weissman DB

更新日期：2019-10-01 00:00:00

abstract：:In population and evolutionary biology, hypotheses about micro-evolutionary and macro-evolutionary processes are commonly tested by comparing the shape indices of empirical evolutionary trees with those predicted by neutral models. A key ingredient in this approach is the ability to compute and quantify distributions ...

journal_title：Theoretical population biology

authors： Wu T,Choi KP

更新日期：2016-04-01 00:00:00

abstract：:A coalescent dual process for a multi-type Moran model with genic selection is derived using a generator approach. This leads to an expansion of the transition functions in the Moran model and the Wright-Fisher diffusion process limit in terms of the transition functions for the coalescent dual. A graphical representa...

journal_title：Theoretical population biology

authors： Etheridge AM,Griffiths RC

更新日期：2009-06-01 00:00:00

abstract：:If being larger than competing conspecifics is important for fitness, then an unstable escalation of body size may result. In asexual populations, a cycling of sizes can occur but for sexual diploids, an irreversible size increase is more likely. Several factors can produce a stable distribution of sizes, but a single...

journal_title：Theoretical population biology

authors： Smith JM,Brown RL

更新日期：1986-10-01 00:00:00

abstract：:We consider population genetics models where selection acts at a set of unlinked loci. It is known that if the fitness of an individual is multiplicative across loci, then these loci are independent. We consider general selection models, but assume parent-independent mutation at each locus. For such a model, the joint...

journal_title：Theoretical population biology

authors： Fearnhead P

更新日期：2006-11-01 00:00:00