Taylor's law for exponentially growing local populations linked by migration
Theor Popul Biol. 2023 Nov 8;154:118-125. doi: 10.1016/j.tpb.2023.10.002. Online ahead of print.ABSTRACTWe 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 arrayed in an essentially nonnegative matrix. This paper identifies conditions on the parameters of the model (specifi...
Source: Theoretical Population Biology - November 10, 2023 Category: Biology Authors: Samuel Carpenter Scout Callens Clark Brown Joel E Cohen Benjamin Z Webb Source Type: research

Taylor's law for exponentially growing local populations linked by migration
Theor Popul Biol. 2023 Nov 8:S0040-5809(23)00063-1. doi: 10.1016/j.tpb.2023.10.002. Online ahead of print.ABSTRACTWe 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 arrayed in an essentially nonnegative matrix. This paper identifies conditions on the parameters of the mode...
Source: Theoretical Population Biology - November 10, 2023 Category: Biology Authors: Samuel Carpenter Scout Callens Clark Brown Joel E Cohen Benjamin Z Webb Source Type: research

Taylor's law for exponentially growing local populations linked by migration
Theor Popul Biol. 2023 Nov 8:S0040-5809(23)00063-1. doi: 10.1016/j.tpb.2023.10.002. Online ahead of print.ABSTRACTWe 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 arrayed in an essentially nonnegative matrix. This paper identifies conditions on the parameters of the mode...
Source: Theoretical Population Biology - November 10, 2023 Category: Biology Authors: Samuel Carpenter Scout Callens Clark Brown Joel E Cohen Benjamin Z Webb Source Type: research

Taylor's law for exponentially growing local populations linked by migration
Theor Popul Biol. 2023 Nov 8:S0040-5809(23)00063-1. doi: 10.1016/j.tpb.2023.10.002. Online ahead of print.ABSTRACTWe 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 arrayed in an essentially nonnegative matrix. This paper identifies conditions on the parameters of the mode...
Source: Theoretical Population Biology - November 10, 2023 Category: Biology Authors: Samuel Carpenter Scout Callens Clark Brown Joel E Cohen Benjamin Z Webb Source Type: research

Taylor's law for exponentially growing local populations linked by migration
Theor Popul Biol. 2023 Nov 8:S0040-5809(23)00063-1. doi: 10.1016/j.tpb.2023.10.002. Online ahead of print.ABSTRACTWe 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 arrayed in an essentially nonnegative matrix. This paper identifies conditions on the parameters of the mode...
Source: Theoretical Population Biology - November 10, 2023 Category: Biology Authors: Samuel Carpenter Scout Callens Clark Brown Joel E Cohen Benjamin Z Webb Source Type: research

Taylor's law for exponentially growing local populations linked by migration
Theor Popul Biol. 2023 Nov 8:S0040-5809(23)00063-1. doi: 10.1016/j.tpb.2023.10.002. Online ahead of print.ABSTRACTWe 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 arrayed in an essentially nonnegative matrix. This paper identifies conditions on the parameters of the mode...
Source: Theoretical Population Biology - November 10, 2023 Category: Biology Authors: Samuel Carpenter Scout Callens Clark Brown Joel E Cohen Benjamin Z Webb Source Type: research

Taylor's law for exponentially growing local populations linked by migration
Theor Popul Biol. 2023 Nov 8:S0040-5809(23)00063-1. doi: 10.1016/j.tpb.2023.10.002. Online ahead of print.ABSTRACTWe 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 arrayed in an essentially nonnegative matrix. This paper identifies conditions on the parameters of the mode...
Source: Theoretical Population Biology - November 10, 2023 Category: Biology Authors: Samuel Carpenter Scout Callens Clark Brown Joel E Cohen Benjamin Z Webb Source Type: research

Limits to evolutionary rescue by conjugative plasmids
Theor Popul Biol. 2023 Nov 1:S0040-5809(23)00062-X. doi: 10.1016/j.tpb.2023.10.001. Online ahead of print.ABSTRACTPlasmids 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 between plasmids can thus limit horizontal transfer. Previous modeling has indeed shown that evolutionary rescue...
Source: Theoretical Population Biology - November 3, 2023 Category: Biology Authors: F élix Geoffroy Hildegard Uecker Source Type: research

Limits to evolutionary rescue by conjugative plasmids
Theor Popul Biol. 2023 Nov 1:S0040-5809(23)00062-X. doi: 10.1016/j.tpb.2023.10.001. Online ahead of print.ABSTRACTPlasmids 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 between plasmids can thus limit horizontal transfer. Previous modeling has indeed shown that evolutionary rescue...
Source: Theoretical Population Biology - November 3, 2023 Category: Biology Authors: F élix Geoffroy Hildegard Uecker Source Type: research

Limits to evolutionary rescue by conjugative plasmids
Theor Popul Biol. 2023 Nov 1:S0040-5809(23)00062-X. doi: 10.1016/j.tpb.2023.10.001. Online ahead of print.ABSTRACTPlasmids 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 between plasmids can thus limit horizontal transfer. Previous modeling has indeed shown that evolutionary rescue...
Source: Theoretical Population Biology - November 3, 2023 Category: Biology Authors: F élix Geoffroy Hildegard Uecker Source Type: research

Limits to evolutionary rescue by conjugative plasmids
Theor Popul Biol. 2023 Nov 1:S0040-5809(23)00062-X. doi: 10.1016/j.tpb.2023.10.001. Online ahead of print.ABSTRACTPlasmids 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 between plasmids can thus limit horizontal transfer. Previous modeling has indeed shown that evolutionary rescue...
Source: Theoretical Population Biology - November 3, 2023 Category: Biology Authors: F élix Geoffroy Hildegard Uecker Source Type: research

Limits to evolutionary rescue by conjugative plasmids
Theor Popul Biol. 2023 Nov 1:S0040-5809(23)00062-X. doi: 10.1016/j.tpb.2023.10.001. Online ahead of print.ABSTRACTPlasmids 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 between plasmids can thus limit horizontal transfer. Previous modeling has indeed shown that evolutionary rescue...
Source: Theoretical Population Biology - November 3, 2023 Category: Biology Authors: F élix Geoffroy Hildegard Uecker Source Type: research

Estimating the Lambda measure in multiple-merger coalescents
This article is devoted to the construction of a non-parametric estimator of the density of Λ that is based on the observation at a single time of the so-called Site Frequency Spectrum (SFS), which describes the allelic frequencies in a present population sample. First, we produce estimates of the multiple-merger rates by solving a linear system, whose coefficients are obtained by appropriately subsampling the SFS. Then, we use a technique that aggregates the information extracted from the previous step through a kernel type of re-construction to give a non-parametric estimation of the measure Λ. We give a consistency re...
Source: Theoretical Population Biology - September 24, 2023 Category: Biology Authors: Ver ónica Miró Pina Émilien Joly Arno Siri-J égousse Source Type: research

Estimating the Lambda measure in multiple-merger coalescents
This article is devoted to the construction of a non-parametric estimator of the density of Λ that is based on the observation at a single time of the so-called Site Frequency Spectrum (SFS), which describes the allelic frequencies in a present population sample. First, we produce estimates of the multiple-merger rates by solving a linear system, whose coefficients are obtained by appropriately subsampling the SFS. Then, we use a technique that aggregates the information extracted from the previous step through a kernel type of re-construction to give a non-parametric estimation of the measure Λ. We give a consistency re...
Source: Theoretical Population Biology - September 24, 2023 Category: Biology Authors: Ver ónica Miró Pina Émilien Joly Arno Siri-J égousse Source Type: research

Estimating the Lambda measure in multiple-merger coalescents
This article is devoted to the construction of a non-parametric estimator of the density of Λ that is based on the observation at a single time of the so-called Site Frequency Spectrum (SFS), which describes the allelic frequencies in a present population sample. First, we produce estimates of the multiple-merger rates by solving a linear system, whose coefficients are obtained by appropriately subsampling the SFS. Then, we use a technique that aggregates the information extracted from the previous step through a kernel type of re-construction to give a non-parametric estimation of the measure Λ. We give a consistency re...
Source: Theoretical Population Biology - September 24, 2023 Category: Biology Authors: Ver ónica Miró Pina Émilien Joly Arno Siri-J égousse Source Type: research