样式: 排序: IF: - GO 导出 标记为已读
-
Neutral diversity in experimental metapopulations Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-03-15 Guilhem Doulcier, Amaury Lambert
New automated and high-throughput methods allow the manipulation and selection of numerous bacterial populations. In this manuscript we are interested in the neutral diversity patterns that emerge from such a setup in which many bacterial populations are grown in parallel serial transfers, in some cases with population-wide extinction and splitting events. We model bacterial growth by a birth–death
-
The ancestral selection graph for a [formula omitted]-asymmetric Moran model Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-03-13 Adrián González Casanova, Noemi Kurt, José Luis Pérez
Motivated by the question of the impact of selective advantage in populations with skewed reproduction mechanims, we study a Moran model with selection. We assume that there are two types of individuals, where the reproductive success of one type is larger than the other. The higher reproductive success may stem from either more frequent reproduction, or from larger numbers of offspring, and is encoded
-
Phase-type distributions in mathematical population genetics: An emerging framework Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-03-07 Asger Hobolth, Iker Rivas-González, Mogens Bladt, Andreas Futschik
A phase-type distribution is the time to absorption in a continuous- or discrete-time Markov chain. Phase-type distributions can be used as a general framework to calculate key properties of the standard coalescent model and many of its extensions. Here, the ‘phases’ in the phase-type distribution correspond to states in the ancestral process. For example, the time to the most recent common ancestor
-
Large effects and the infinitesimal model Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-27 Todd L. Parsons, Peter L. Ralph
The infinitesimal model of quantitative genetics relies on the Central Limit Theorem to stipulate that under additive models of quantitative traits determined by many loci having similar effect size, the difference between an offspring’s genetic trait component and the average of their two parents’ genetic trait components is Normally distributed and independent of the parents’ values. Here, we investigate
-
Evolution of delayed dispersal with group size effect and population dynamics Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-27 Alan Flatrès, Geoff Wild
Individuals delay natal dispersal for many reasons. There may be no place to disperse to; immediate dispersal or reproduction may be too costly; immediate dispersal may mean that the individual and their relatives miss the benefits of group living. Understanding the factors that lead to the evolution of delayed dispersal is important because delayed dispersal sets the stage for complex social groups
-
Evolution of spite versus evolution of altruism through a disbandment mechanism Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-21 Shun Kurokawa
Altruism and spite are costly to the actor, making their evolution unlikely without specific mechanisms. Nonetheless, both altruistic and spiteful behaviors are present in individuals, which suggests the existence of an underlying mechanism that drives their evolution. If altruistic individuals are more likely to be recipients of altruism than non-altruistic individuals, then altruism can be favored
-
Biographical sketch: Freddy Bugge Christiansen Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-20 Volker Loeschcke, Mikkel Heide Schierup
-
On multi-type Cannings models and multi-type exchangeable coalescents Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-15 Martin Möhle
A multi-type neutral Cannings population model with migration and fixed subpopulation sizes is analyzed. Under appropriate conditions, as all subpopulation sizes tend to infinity, the ancestral process, properly time-scaled, converges to a multi-type coalescent sharing the exchangeability and consistency property. The proof gains from coalescent theory for single-type Cannings models and from decompositions
-
Clade size distribution under neutral evolutionary models Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-15 Antonio Di Nunzio, Filippo Disanto
Given a labeled tree topology , consider a population of leaves chosen among those of . The of is the minimal subtree of containing and its size is given by the number of leaves in the clade. When is selected under the Yule or uniform distribution among the labeled topologies of size , we study the “clade size” random variable determining closed formulas for its probability mass function, its mean
-
Pneumococcus and the stress-gradient hypothesis: A trade-off links [formula omitted] and susceptibility to co-colonization across countries Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-06 Ermanda Dekaj, Erida Gjini
Modern molecular technologies have revolutionized our understanding of bacterial epidemiology, but reported data across studies and different geographic endemic settings remain under-integrated in common theoretical frameworks. Pneumococcus serotype co-colonization, caused by the polymorphic bacteria , has been increasingly investigated and reported in recent years. While the global genomic diversity
-
The impact of dormancy on evolutionary branching Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-05 Jochen Blath, Tobias Paul, András Tóbiás, Maite Wilke Berenguer
In this paper, we investigate the consequences of dormancy in the ‘rare mutation’ and ‘large population’ regime of stochastic adaptive dynamics. Starting from an individual-based micro-model, we first derive the Polymorphic Evolution Sequence of the population, based on a previous work by Baar and Bovier (2018). After passing to a second ‘small mutations’ limit, we arrive at the Canonical Equation
-
Riding the waves from epidemic to endemic: Viral mutations, immunological change and policy responses Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-02-03 D. Grass, S. Wrzaczek, J.P. Caulkins, G. Feichtinger, R.F. Hartl, P.M. Kort, M. Kuhn, A. Prskawetz, M. Sanchez-Romero, A. Seidl
Nonpharmaceutical interventions (NPI) are an important tool for countering pandemics such as COVID-19. Some are cheap; others disrupt economic, educational, and social activity. The latter force governments to balance the health benefits of reduced infection and death against broader lockdown-induced societal costs. A literature has developed modeling how to optimally adjust lockdown intensity as an
-
Bernoulli factories and duality in Wright–Fisher and Allen–Cahn models of population genetics Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-01-30 Jere Koskela, Krzysztof Łatuszyński, Dario Spanò
Mathematical models of genetic evolution often come in pairs, connected by a so-called duality relation. The most seminal example are the Wright–Fisher diffusion and the Kingman coalescent, where the former describes the stochastic evolution of neutral allele frequencies in a large population forwards in time, and the latter describes the genetic ancestry of randomly sampled individuals from the population
-
Assessing mutualistic metacommunity capacity by integrating spatial and interaction networks Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-01-14 Marc Ohlmann, François Munoz, François Massol, Wilfried Thuiller
We develop a spatially realistic model of mutualistic metacommunities that exploits the joint structure of spatial and interaction networks. Assuming that all species have the same colonisation and extinction parameters, this model exhibits a sharp transition between stable non-null equilibrium states and a global extinction state. This behaviour allows defining a threshold on colonisation/extinction
-
-
Cultural transmission, competition for prey, and the evolution of cooperative hunting Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-01-07 Talia Borofsky, Marcus W. Feldman, Yoav Ram
Although cooperative hunting is widespread among animals, its benefits are unclear. At low frequencies, cooperative hunting may allow predators to escape competition and access bigger prey that could not be caught by a lone cooperative predator. Cooperative hunting is a more successful strategy when it is common, but its spread can result in overhunting big prey, which may have a lower per-capita growth
-
Maximum likelihood estimation and natural pairwise estimating equations are identical for three sequences and a symmetric 2-state substitution model Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-01-04 Asger Hobolth, Carsten Wiuf
Consider the problem of estimating the branch lengths in a symmetric 2-state substitution model with a known topology and a general, clock-like or star-shaped tree with three leaves. We show that the maximum likelihood estimates are analytically tractable and can be obtained from pairwise sequence comparisons. Furthermore, we demonstrate that this property does not generalize to larger state spaces
-
The 2024 Feldman Prize Theor. Popul. Biol. (IF 1.4) Pub Date : 2024-01-01 Noah A. Rosenberg
Abstract not available
-
The optimal momentum of population growth and decline Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-12-19 Gustav Feichtinger, Stefan Wrzaczek
About 50 years ago, Keyfitz (1971) asked how much further a growing human population would increase if its fertility rate were immediately to be reduced to replacement level and remain there forever. The reason for demographic momentum is an age–structure inertia due to relatively many potential parents because of past high fertility. Although nobody expects such a miraculous reduction in reproductive
-
On random conformity bias in cultural transmission of polychotomous traits Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-12-22 Kaleda K. Denton, Uri Liberman, Marcus W. Feldman
Mathematical models of conformity and anti-conformity have commonly included a set of simplifying assumptions. For example, (1) there are cultural variants in the population, (2) naive individuals observe the cultural variants of adult “role models,” and (3) individuals’ levels of conformity or anti-conformity do not change over time. Three recent theoretical papers have shown that departures from
-
Coalescence and sampling distributions for Feller diffusions Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-12-12 Conrad J. Burden, Robert C. Griffiths
Consider the diffusion process defined by the forward equation ut(t,x)=12{xu(t,x)}xx−α{xu(t,x)}x for t,x≥0 and −∞<α<∞, with an initial condition u(0,x)=δ(x−x0). This equation was introduced and solved by Feller to model the growth of a population of independently reproducing individuals. We explore important coalescent processes related to Feller’s solution. For any α and x0>0 we calculate the distribution
-
A mathematical framework for evo-devo dynamics Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-12-02 Mauricio González-Forero
Natural selection acts on phenotypes constructed over development, which raises the question of how development affects evolution. Classic evolutionary theory indicates that development affects evolution by modulating the genetic covariation upon which selection acts, thus affecting genetic constraints. However, whether genetic constraints are relative, thus diverting adaptation from the direction
-
Exact confidence intervals for population growth rate, longevity and generation time Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-11-22 Carlos Hernandez-Suarez, Jorge Rabinovich
By quantifying key life history parameters in populations, such as growth rate, longevity, and generation time, researchers and administrators can obtain valuable insights into its dynamics. Although point estimates of demographic parameters have been available since the inception of demography as a scientific discipline, the construction of confidence intervals has typically relied on approximations
-
The shirker’s dilemma and the prospect of cooperation in large groups Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-11-23 Jorge Peña, Aviad Heifetz, Georg Nöldeke
Cooperation usually becomes harder to sustain as groups become larger because incentives to shirk increase with the number of potential contributors to collective action. But is this always the case? Here we study a binary-action cooperative dilemma where a public good is provided as long as not more than a given number of players shirk from a costly cooperative task. We find that at the stable polymorphic
-
Taylor’s law for exponentially growing local populations linked by migration Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-11-08 Samuel Carpenter, Scout Callens, Clark Brown, Joel E. Cohen, Benjamin Z. Webb
We consider the dynamics of a collection of n>1 populations in which each population has its own rate of growth or decay, fixed in continuous time, and migrants may flow from one population to another over a fixed network, at a rate, fixed over time, times the size of the sending population. This model is represented by an ordinary linear differential equation of dimension n with constant coefficients
-
Limits to evolutionary rescue by conjugative plasmids Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-11-02 Félix Geoffroy, Hildegard Uecker
Plasmids may carry genes coding for beneficial traits and thus contribute to adaptation of bacterial populations to environmental stress. Conjugative plasmids can horizontally transfer between cells, which a priori facilitates the spread of adaptive alleles. However, if the potential recipient cell is already colonized by another incompatible plasmid, successful transfer may be prevented. Competition
-
Estimating the Lambda measure in multiple-merger coalescents Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-09-22 Verónica Miró Pina, Émilien Joly, Arno Siri-Jégousse
Multiple-merger coalescents, also known as Λ-coalescents, have been used to describe the genealogy of populations that have a skewed offspring distribution or that undergo strong selection. Inferring the characteristic measure Λ, which describes the rates of the multiple-merger events, is key to understand these processes. So far, most inference methods only work for some particular families of Λ-coalescents
-
Disbandment rules that most facilitate the evolution of cooperation Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-09-06 Shun Kurokawa
Cooperation is considered a mysterious phenomenon from the perspective of adaptive evolution. However, if an individual can separate from an unsatisfactory group and join another, then this can facilitate positive assortment between cooperative types and promote the evolution of cooperation. What kind of disbandment rule most facilitates the evolution of cooperation? A previous study investigated exogenous
-
Stochastic modeling of Dalbulus maidis, vector of maize diseases Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-09-03 R.H. Barriga Rubio, M. Otero
We developed a simple linear stochastic model for Dalbulus maidis dependent exclusively on temperature, whose parameters were determined from published field and laboratory studies performed at different temperatures. This model takes into account the principal stages and events of the life cycle of this pest, which is vector of maize diseases. We implemented the effect of distributed delays or Linear
-
The structured coalescent in the context of gene copy number variation Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-08-30 Moritz Otto, Thomas Wiehe
The Structured Coalescent was introduced to describe the coalescent process in spatially subdivided populations with migration. Here, we re-interpret migration routes of individuals in the original model as “migration routes” of single genes in tandemly arranged gene arrays. A gene copy may change its position within the array via unequal recombination. Hence, in a coalescent framework, two copies
-
Parentage exclusion of close relatives in haplodiploid species Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-08-26 Jinliang Wang, Andrew F.G. Bourke
Parentage exclusion probability is usually calculated to evaluate the informativeness of a set of markers for, and the statistical power of, a parentage analysis. Equations for parentage exclusion probability have been derived in various scenarios such as paternity exclusion when maternity is known or unknown or when candidate males are unrelated or loosely related (being from the same subpopulation)
-
Recoverability of ancestral recombination graph topologies Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-08-05 Elizabeth Hayman, Anastasia Ignatieva, Jotun Hein
Recombination is a powerful evolutionary process that shapes the genetic diversity observed in the populations of many species. Reconstructing genealogies in the presence of recombination from sequencing data is a very challenging problem, as this relies on mutations having occurred on the correct lineages in order to detect the recombination and resolve the ordering of coalescence events in the local
-
Untangling the role of temporal and spatial variations in persistence of populations Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-07-13 Michel Benaïm, Claude Lobry, Tewfik Sari, Édouard Strickler
We consider a population distributed between two habitats, in each of which it experiences a growth rate that switches periodically between two values, 1−ɛ>0 or −(1+ɛ)<0. We study the specific case where the growth rate is positive in one habitat and negative in the other one for the first half of the period, and conversely for the second half of the period, that we refer as the (±1) model. In the
-
Determining the most recent common ancestor in a finite linear habitat with asymmetric dispersal Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-07-13 Kyle G. Teller, James M. Pringle
Many species that are birthed in one location and become reproductive in another location can be treated as if in a one-dimensional habitat where dispersal is biased downstream. One example of such is planktonic larvae that disperse in coastal oceans, rivers, and streams. In these habitats, the dynamics of the dispersal are dominated by the movement of offspring in one direction and the distance between
-
The Recombination Hotspot Paradox: Co-evolution between PRDM9 and its target sites Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-07-13
Recombination often concentrates in small regions called recombination hotspots where recombination is much higher than the genome’s average. In many vertebrates, including humans, gene PRDM9 specifies which DNA motifs will be the target for breaks that initiate recombination, ultimately determining the location of recombination hotspots. Because the sequence that breaks (allowing recombination) is
-
Evolutionary dynamics of dispersal and local adaptation in multi-resource landscapes Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-07-11 Elijah Reyes, Finnerty Cunliffe, Leithen K. M’Gonigle
Dispersal can enable access to resources in new locations. Consequently, traits that govern dispersal probability and dispersal distance may impact an individual’s ability to acquire resources. However, spatial variation in the quality or quantity of resources may mediate potential adaptive benefits of novel dispersal traits. Ecological traits (i.e., those that determine how an individual processes
-
Evolutionary rescue via niche construction: Infrequent construction can prevent post-invasion extinction Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-06-14 Alexander Longcamp, Jeremy Draghi
A population experiencing habitat loss can avoid extinction by undergoing genetic adaptation—a process known as evolutionary rescue. Here we analytically approximate the probability of evolutionary rescue via a niche-constructing mutation that allows carriers to convert a novel, unfavorable reproductive habitat to a favorable state at a cost to their fecundity. We analyze competition between mutants
-
Cultural niche construction with application to fertility control: A model for education and social transmission of contraceptive use Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-06-13 Kaleda K. Denton, Jeremy R. Kendal, Yasuo Ihara, Marcus W. Feldman
The evolution of a cultural trait may be affected by niche construction, or changes in the selective environment of that trait due to the inheritance of other cultural traits that make up a cultural background. This study investigates the evolution of a cultural trait, such as the acceptance of the idea of contraception, that is both vertically and horizontally transmitted within a homogeneous social
-
Decomposition of disparities in life expectancy with applications to administrative health claims and registry data Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-06-07 I. Akushevich, A. Yashkin, M. Kovtun, E. Stallard, A.I. Yashin, J. Kravchenko
Research shows that geographic disparities in life expectancy between leading and lagging states are increasing over time while racial disparities between Black and White Americans have been going down. In the 65+ age strata morbidity is the most common cause of death, making differences in morbidity and associated adverse health-related outcomes between advantaged and disadvantaged groups an important
-
-
Adaptation of a quantitative trait to a changing environment: New analytical insights on the asexual and infinitesimal sexual models Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-05-11 J. Garnier, O. Cotto, E. Bouin, T. Bourgeron, T. Lepoutre, O. Ronce, V. Calvez
Predicting the adaptation of populations to a changing environment is crucial to assess the impact of human activities on biodiversity. Many theoretical studies have tackled this issue by modeling the evolution of quantitative traits subject to stabilizing selection around an optimal phenotype, whose value is shifted continuously through time. In this context, the population fate results from the equilibrium
-
A cultural evolutionary model of the interaction between parental beliefs and behaviors, with applications to vaccine hesitancy Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-05-05 Kerri-Ann Anderson, Nicole Creanza
Health perceptions and health-related behaviors can change at the population level as cultures evolve. In the last decade, despite the proven efficacy of vaccines, the developed world has seen a resurgence of vaccine-preventable diseases (VPDs) such as measles, pertussis, and polio. Vaccine hesitancy, which is influenced by historical, political, and socio-cultural forces, is believed to be a primary
-
Waiting times in a branching process model of colorectal cancer initiation Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-04-24 Ruibo Zhang, Obinna A. Ukogu, Ivana Bozic
We study a multi-stage model for the development of colorectal cancer from initially healthy tissue. The model incorporates a complex sequence of driver gene alterations, some of which result in immediate growth advantage, while others have initially neutral effects. We derive analytic estimates for the sizes of premalignant subpopulations, and use these results to compute the waiting times to premalignant
-
Evolutionarily stable levels of aposematic defence in prey populations Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-04-11 Alan Scaramangas, Mark Broom, Graeme D. Ruxton, Anna Rouviere
Our understanding of aposematism (the conspicuous signalling of a defence for the deterrence of predators) has advanced notably since its first observation in the late nineteenth century. Indeed, it extends the scope of a well-established game-theoretical model of this very same process both from the analytical standpoint (by considering regimes of varying background mortality and colony size) and
-
Evolution with recombination as Gibbs sampling Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-04-06 Jenny M. Poulton, Lee Altenberg, Chris Watkins
This work presents a population genetic model of evolution, which includes haploid selection, mutation, recombination, and drift. The mutation-selection equilibrium can be expressed exactly in closed form for arbitrary fitness functions without resorting to diffusion approximations. Tractability is achieved by generating new offspring using n-parent rather than 2-parent recombination. While this enforces
-
Copuling population dynamics and diel migration patterns Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-03-31 Emil F. Frølich
The diel vertical migration is one of the main drivers of population dynamics in the ocean. Population dynamical models of the ocean typically do not incorporate the behavioral aspects of the migration. We demonstrate a model with coupled population dynamics and behavior with the diel vertical migration emerging. We study the population dynamics and behavioral dynamics of a predator–prey system. We
-
Digenic genotypes: The interface of inbreeding, linkage, and linkage disequilibrium Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-03-21 Reginald D. Smith
Many traits in populations are well understood as being Mendelian effects at single loci or additive polygenic effects across numerous loci. However, there are important phenomena and traits that are intermediate between these two extremes and are known as oligogenic traits. Here we investigate digenic, or two-locus, traits and how their frequencies in populations are affected by non-random mating
-
Corrigendum to “Modeling temporal dynamics of genetic diversity in stage-structured plant populations with reference to demographic genetic structure” [Theor. Popul. Biol. 148 (2022) 76–85] Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-03-22 Yoichi Tsuzuki, Takenori Takada, Masashi Ohara
Abstract not available
-
-
A population genetics theory for piRNA-regulated transposable elements Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-03-01 Siddharth S. Tomar, Aurélie Hua-Van, Arnaud Le Rouzic
Transposable elements (TEs) are self-reproducing selfish DNA sequences that can invade the genome of virtually all living species. Population genetics models have shown that TE copy numbers generally reach a limit, either because the transposition rate decreases with the number of copies (transposition regulation) or because TE copies are deleterious, and thus purged by natural selection. Yet, recent
-
Stability of Rosenzweig–MacArthur models with non-diffusive dispersal on non-regular networks Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-02-28 Ryusuke Kon, Dinesh Kumar
This paper examines the stability of the Rosenzweig–MacArthur model distributed to identical discrete habitat patches. Migration between patches is assumed to follow the non-diffusive rule that individuals have a fixed rate of leaving their local habitat patch and migrating to another. Under this non-diffusive migration rule, we found that population dispersal on a non-regular and connected habitat
-
-
Continuous irregular dynamics with multiple neutral trajectories permit species coexistence in competitive communities Theor. Popul. Biol. (IF 1.4) Pub Date : 2023-01-05 Atsushi Yamauchi, Koichi Ito, Shota Shibasaki, Toshiyuki Namba
The colonization model formulates competition among propagules for habitable sites to colonize, which serves as a mechanism enabling coexistence of multiple species. This model traditionally assumes that encounters between propagules and sites occur as mass action events, under which species distribution can eventually reach an equilibrium state with multiple species in a constant environment. To investigate
-
Distributions of cherries and pitchforks for the Ford model Theor. Popul. Biol. (IF 1.4) Pub Date : 2022-12-22 Gursharn Kaur, Kwok Pui Choi, Taoyang Wu
Distributional properties of tree shape statistics under random phylogenetic tree models play an important role in investigating the evolutionary forces underlying the observed phylogenies. In this paper, we study two subtree counting statistics, the number of cherries and that of pitchforks for the Ford model, the alpha model introduced by Daniel Ford. It is a one-parameter family of random phylogenetic
-
Improving the realism of neutral ecological models by incorporating transient dynamics with temporal changes in community size Theor. Popul. Biol. (IF 1.4) Pub Date : 2022-12-12 Tak Fung, Ryan A. Chisholm
Neutral models in ecology assume that all species are demographically equivalent, such that their abundances differ ultimately because of demographic stochasticity rather than selection. In spite of their simplicity, neutral models have been found to accurately reproduce static patterns of biodiversity for diverse communities. However, the same neutral models have been found to exhibit species abundance
-
-
Analytical Bayesian approach for the design of surveillance and control programs to assess pest-eradication success Theor. Popul. Biol. (IF 1.4) Pub Date : 2022-11-21 B. Barnes, M. Parsa, F. Giannini, D. Ramsey
Large invasive species eradication programs are undertaken to protect native biodiversity and agriculture. Programs are typically followed by a series of surveys to assess the likelihood of eradication success and, when residual pests are detected, small-scale control or ‘mop-ups’ are implemented to eliminate these infestations. Further surveys follow to confirm absence with ‘freedom’ declared when
-
Modeling temporal dynamics of genetic diversity in stage-structured plant populations with reference to demographic genetic structure Theor. Popul. Biol. (IF 1.4) Pub Date : 2022-11-17 Yoichi Tsuzuki, Takenori Takada, Masashi Ohara
Predicting temporal dynamics of genetic diversity is important for assessing long-term population persistence. In stage-structured populations, especially in perennial plant species, genetic diversity is often compared among life history stages, such as seedlings, juveniles, and flowerings, using neutral genetic markers. The comparison among stages is sometimes referred to as demographic genetic structure
-
Modeling and migration-based control of depopulation Theor. Popul. Biol. (IF 1.4) Pub Date : 2022-11-13 Lőrinc Márton
This study deals with the problem of the population shrinking in habitats affected by aging and excessive migration outflows. First, a control-oriented population dynamics model was proposed that catches the effect of depopulation. The model also includes the effect of spatial interaction-driven migration flows on population size. The resulting model is a non-homogeneous ordinary differential equation
-
The best of both worlds: Combining population genetic and quantitative genetic models Theor. Popul. Biol. (IF 1.4) Pub Date : 2022-10-25 L. Dekens, S.P. Otto, V. Calvez
Numerous traits under migration–selection balance are shown to exhibit complex patterns of genetic architecture with large variance in effect sizes. However, the conditions under which such genetic architectures are stable have yet to be investigated, because studying the influence of a large number of small allelic effects on the maintenance of spatial polymorphism is mathematically challenging, due