Untangling the role of temporal and spatial variations in persistence of populations
Theor Popul Biol. 2023 Jul 13:S0040-5809(23)00048-5. doi: 10.1016/j.tpb.2023.07.003. Online ahead of print.ABSTRACTWe 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 absence of migration, the population goes to 0 exponentially fast in each environment. In this paper, we ...
Source: Theoretical Population Biology - July 15, 2023 Category: Biology Authors: Michel Bena ïm Claude Lobry Tewfik Sari Édouard Strickler Source Type: research
Untangling the role of temporal and spatial variations in persistence of populations
Theor Popul Biol. 2023 Jul 13:S0040-5809(23)00048-5. doi: 10.1016/j.tpb.2023.07.003. Online ahead of print.ABSTRACTWe 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 absence of migration, the population goes to 0 exponentially fast in each environment. In this paper, we ...
Source: Theoretical Population Biology - July 15, 2023 Category: Biology Authors: Michel Bena ïm Claude Lobry Tewfik Sari Édouard Strickler Source Type: research
Untangling the role of temporal and spatial variations in persistence of populations
Theor Popul Biol. 2023 Jul 13:S0040-5809(23)00048-5. doi: 10.1016/j.tpb.2023.07.003. Online ahead of print.ABSTRACTWe 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 absence of migration, the population goes to 0 exponentially fast in each environment. In this paper, we ...
Source: Theoretical Population Biology - July 15, 2023 Category: Biology Authors: Michel Bena ïm Claude Lobry Tewfik Sari Édouard Strickler Source Type: research
Untangling the role of temporal and spatial variations in persistence of populations
Theor Popul Biol. 2023 Jul 13:S0040-5809(23)00048-5. doi: 10.1016/j.tpb.2023.07.003. Online ahead of print.ABSTRACTWe 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 absence of migration, the population goes to 0 exponentially fast in each environment. In this paper, we ...
Source: Theoretical Population Biology - July 15, 2023 Category: Biology Authors: Michel Bena ïm Claude Lobry Tewfik Sari Édouard Strickler Source Type: research
Untangling the role of temporal and spatial variations in persistence of populations
Theor Popul Biol. 2023 Jul 13:S0040-5809(23)00048-5. doi: 10.1016/j.tpb.2023.07.003. Online ahead of print.ABSTRACTWe 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 absence of migration, the population goes to 0 exponentially fast in each environment. In this paper, we ...
Source: Theoretical Population Biology - July 15, 2023 Category: Biology Authors: Michel Bena ïm Claude Lobry Tewfik Sari Édouard Strickler Source Type: research
Determining the most recent common ancestor in a finite linear habitat with asymmetric dispersal
Theor Popul Biol. 2023 Jul 12:S0040-5809(23)00045-X. doi: 10.1016/j.tpb.2023.06.003. Online ahead of print.ABSTRACTMany 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 parents and offspring in the other direction does not matter. We study an idealized species with non-overlap...
Source: Theoretical Population Biology - July 14, 2023 Category: Biology Authors: Kyle G Teller James M Pringle Source Type: research
The Recombination Hotspot Paradox: Co-evolution between PRDM9 and its target sites
Theor Popul Biol. 2023 Jul 12:S0040-5809(23)00046-1. doi: 10.1016/j.tpb.2023.07.001. Online ahead of print.ABSTRACTRecombination 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 converted into the sequence that does not break (preventing recombination), the latter sequence is over-transmitt...
Source: Theoretical Population Biology - July 14, 2023 Category: Biology Authors: Francisco Úbeda Frederic Fyon Reinhard B ürger Source Type: research
Determining the most recent common ancestor in a finite linear habitat with asymmetric dispersal
Theor Popul Biol. 2023 Jul 12:S0040-5809(23)00045-X. doi: 10.1016/j.tpb.2023.06.003. Online ahead of print.ABSTRACTMany 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 parents and offspring in the other direction does not matter. We study an idealized species with non-overlap...
Source: Theoretical Population Biology - July 14, 2023 Category: Biology Authors: Kyle G Teller James M Pringle Source Type: research
The Recombination Hotspot Paradox: Co-evolution between PRDM9 and its target sites
Theor Popul Biol. 2023 Jul 12:S0040-5809(23)00046-1. doi: 10.1016/j.tpb.2023.07.001. Online ahead of print.ABSTRACTRecombination 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 converted into the sequence that does not break (preventing recombination), the latter sequence is over-transmitt...
Source: Theoretical Population Biology - July 14, 2023 Category: Biology Authors: Francisco Úbeda Frederic Fyon Reinhard B ürger Source Type: research
Evolutionary dynamics of dispersal and local adaptation in multi-resource landscapes
Theor Popul Biol. 2023 Jul 11:S0040-5809(23)00047-3. doi: 10.1016/j.tpb.2023.07.002. Online ahead of print.ABSTRACTDispersal 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 resources) will also, by definition, affect how an individual interacts with the resource landscape. In a spatial...
Source: Theoretical Population Biology - July 13, 2023 Category: Biology Authors: Elijah Reyes Finnerty Cunliffe Leithen K M'Gonigle Source Type: research
Evolutionary rescue via niche construction: Infrequent construction can prevent post-invasion extinction
Theor Popul Biol. 2023 Jun 14;153:37-49. doi: 10.1016/j.tpb.2023.06.002. Online ahead of print.ABSTRACTA 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 and non-niche-constructing wild types, who ultimately require the constructed habitats to reproduce. We find that over-explo...
Source: Theoretical Population Biology - June 16, 2023 Category: Biology Authors: Alexander Longcamp Jeremy Draghi Source Type: research
Evolutionary rescue via niche construction: Infrequent construction can prevent post-invasion extinction
Theor Popul Biol. 2023 Jun 14;153:37-49. doi: 10.1016/j.tpb.2023.06.002. Online ahead of print.ABSTRACTA 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 and non-niche-constructing wild types, who ultimately require the constructed habitats to reproduce. We find that over-explo...
Source: Theoretical Population Biology - June 16, 2023 Category: Biology Authors: Alexander Longcamp Jeremy Draghi Source Type: research
Evolutionary rescue via niche construction: Infrequent construction can prevent post-invasion extinction
Theor Popul Biol. 2023 Jun 14;153:37-49. doi: 10.1016/j.tpb.2023.06.002. Online ahead of print.ABSTRACTA 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 and non-niche-constructing wild types, who ultimately require the constructed habitats to reproduce. We find that over-explo...
Source: Theoretical Population Biology - June 16, 2023 Category: Biology Authors: Alexander Longcamp Jeremy Draghi Source Type: research
Evolutionary rescue via niche construction: Infrequent construction can prevent post-invasion extinction
Theor Popul Biol. 2023 Jun 14;153:37-49. doi: 10.1016/j.tpb.2023.06.002. Online ahead of print.ABSTRACTA 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 and non-niche-constructing wild types, who ultimately require the constructed habitats to reproduce. We find that over-explo...
Source: Theoretical Population Biology - June 16, 2023 Category: Biology Authors: Alexander Longcamp Jeremy Draghi Source Type: research
Evolutionary rescue via niche construction: Infrequent construction can prevent post-invasion extinction
Theor Popul Biol. 2023 Jun 14;153:37-49. doi: 10.1016/j.tpb.2023.06.002. Online ahead of print.ABSTRACTA 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 and non-niche-constructing wild types, who ultimately require the constructed habitats to reproduce. We find that over-explo...
Source: Theoretical Population Biology - June 16, 2023 Category: Biology Authors: Alexander Longcamp Jeremy Draghi Source Type: research
