{"title":"Costly punishment sustains indirect reciprocity under low defection detectability","authors":"Yohsuke Murase","doi":"arxiv-2409.09701","DOIUrl":"https://doi.org/arxiv-2409.09701","url":null,"abstract":"Cooperation is fundamental to human societies, and indirect reciprocity,\u0000where individuals cooperate to build a positive reputation for future benefits,\u0000plays a key role in promoting it. Previous theoretical and experimental studies\u0000have explored both the effectiveness and limitations of costly punishment in\u0000sustaining cooperation. While empirical observations show that costly\u0000punishment by third parties is common, some theoretical models suggest it may\u0000not be effective in the context of indirect reciprocity, raising doubts about\u0000its potential to enhance cooperation. In this study, we theoretically\u0000investigate the conditions under which costly punishment is effective. Building\u0000on a previous model, we introduce a new type of error in perceiving actions,\u0000where defection may be mistakenly perceived as cooperation. This extension\u0000models a realistic scenario where defectors have a strong incentive to disguise\u0000their defection as cooperation. Our analysis reveals that when defection is\u0000difficult to detect, norms involving costly punishment can emerge as the most\u0000efficient evolutionarily stable strategies. These findings demonstrate that\u0000costly punishment can play a crucial role in promoting cooperation within\u0000indirect reciprocity.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142247401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"How Combined Pairwise and Higher-Order Interactions Shape Transient Dynamics","authors":"Sourin Chatterjee, Sayantan Nag Chowdhury","doi":"arxiv-2409.09521","DOIUrl":"https://doi.org/arxiv-2409.09521","url":null,"abstract":"Understanding how species interactions shape biodiversity is a core challenge\u0000in ecology. While much focus has been on long-term stability, there is rising\u0000interest in transient dynamics-the short-lived periods when ecosystems respond\u0000to disturbances and adjust toward stability. These transitions are crucial for\u0000predicting ecosystem reactions and guiding effective conservation. Our study\u0000introduces a model that blends pairwise and higher-order interactions, offering\u0000a more realistic view of natural ecosystems. We find pairwise interactions slow\u0000the journey to stability, while higher-order interactions speed it up. This\u0000model provides fresh insights into ecosystem resilience and recovery, helping\u0000improve strategies for managing species and ecological disruptions.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142247399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Future of Decoding Non-Standard Nucleotides: Leveraging Nanopore Sequencing for Expanded Genetic Codes","authors":"Hyunjin Shim","doi":"arxiv-2409.09314","DOIUrl":"https://doi.org/arxiv-2409.09314","url":null,"abstract":"Expanding genetic codes from natural standard nucleotides to artificial\u0000non-standard nucleotides marks a significant advancement in synthetic biology,\u0000with profound implications for biotechnology and medicine. Decoding the\u0000biological information encoded in these non-standard nucleotides presents new\u0000challenges, as traditional sequencing technologies are unable to recognize or\u0000interpret novel base pairings. In this perspective, we explore the potential of\u0000nanopore sequencing, which is uniquely suited to decipher both standard and\u0000non-standard nucleotides by directly measuring the biophysical properties of\u0000nucleic acids. Nanopore technology offers real-time, long-read sequencing\u0000without the need for amplification or synthesis, making it particularly\u0000advantageous for expanded genetic systems like Artificially Expanded Genetic\u0000Information Systems (AEGIS). We discuss how the adaptability of nanopore\u0000sequencing and advancements in data processing can unlock the potential of\u0000these synthetic genomes and open new frontiers in understanding and utilizing\u0000expanded genetic codes.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"196 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142247400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Márcia Lemos-Silva, Sandra Vaz, Delfim F. M. Torres
{"title":"Exact solution for a discrete-time SIR model","authors":"Márcia Lemos-Silva, Sandra Vaz, Delfim F. M. Torres","doi":"arxiv-2409.09157","DOIUrl":"https://doi.org/arxiv-2409.09157","url":null,"abstract":"We propose a nonstandard finite difference scheme for the\u0000Susceptible-Infected-Removed (SIR) continuous model. We prove that our\u0000discretized system is dynamically consistent with its continuous counterpart\u0000and we derive its exact solution. We end with the analysis of the long-term\u0000behavior of susceptible, infected and removed individuals, illustrating our\u0000results with examples. In contrast with the SIR discrete-time model available\u0000in the literature, our new model is simultaneously mathematically and\u0000biologically sound.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142247405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jinyu Ye, Yuan Gao, Huan Gao, Qingqing Zhao, Minjie Zhou, Xiangdong Xue, Meng Shi
{"title":"Effects of pristine and photoaged tire wear particles and their leachable additives on key nitrogen removal processes and nitrous oxide accumulation in estuarine sediments","authors":"Jinyu Ye, Yuan Gao, Huan Gao, Qingqing Zhao, Minjie Zhou, Xiangdong Xue, Meng Shi","doi":"arxiv-2409.08739","DOIUrl":"https://doi.org/arxiv-2409.08739","url":null,"abstract":"Global estuaries and coastal regions, acting as critical interfaces for\u0000mitigating nitrogen flux to marine, concurrently contend with contamination\u0000from tire wear particles (TWPs). However, the effects of pristine and photoaged\u0000TWP (P-TWP and A-TWP) and their leachates (P-TWPL and A-TWPL) on key nitrogen\u0000removal processes in estuarine sediments remain unclear. This study explored\u0000the responses of denitrification rate, anammox rate, and nitrous oxide (N2O)\u0000accumulation to P-TWP, A-TWP, P-TWPL, and A-TWPL exposures in estuarine\u0000sediments, and assessed the potential biotoxic substances in TWPL. Results\u0000indicate that P-TWP inhibited the denitrification rate and increased N2O\u0000accumulation without significantly impacting the anammox rate. A-TWP\u0000intensified the denitrification rate inhibition by further reducing narG gene\u0000abundance and NAR activity, and also decreased the hzo gene abundance, HZO\u0000activity, and Candidatus Kuenenia abundance, thereby slowing the anammox rate.\u0000N2O accumulation was lower after A-TWP exposure than P-TWP, with the NIR/NOS\u0000and NOR/NOS activity ratios closely associated with N2O accumulation. Batch\u0000experiments indicated that photoaging promoted Zn release from TWPL,\u0000significantly contributing to the inhibited denitrification rate and increased\u0000N2O accumulation by TWP. In addition, TWP drives changes in microbial community\u0000structure through released additives, with the abundance of DNB and AnAOB\u0000closely linked to the Zn, Mn, and As concentrations in TWPL. This study offers\u0000insights into assessing the environmental risks of TWPs in estuarine\u0000ecosystems.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142247403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Highly conserved sequence-specific double-stranded DNA binding networks contributing to divergent genomic evolution of human and chimpanzee brain development","authors":"Gennadi Glinsky","doi":"arxiv-2409.07812","DOIUrl":"https://doi.org/arxiv-2409.07812","url":null,"abstract":"Emergence during mammalian evolution of concordant and divergent traits of\u0000genomic regulatory networks encompassing ubiquitous, qualitatively nearly\u0000identical yet quantitatively distinct arrays of sequences of transcription\u0000factor binding sites (TFBS) for 716 proteins is reported. A vast majority of\u0000TFs (770 of 716; 98%) comprising protein constituents of these networks appear\u0000to share common Gene Ontology (GO) features of sequence-specific\u0000double-stranded DNA binding (GO: 1990837). Genome-wide and individual\u0000chromosome-level analyses of 17,935 ATAC-seq-defined brain development\u0000regulatory regions (BDRRs) revealed nearly universal representations of TFBS\u0000for TF-constituents of these networks, TFBS densities of which appear\u0000consistently higher within thousands BDRRs of Modern Humans compare to\u0000Chimpanzee. Transposable elements (TE), including LTR/HERV, SINE/Alu, SVA, and\u0000LINE families, appear to harbor and spread genome-wide consensus regulatory\u0000nodes of identified herein highly conserved sequence-specific double-stranded\u0000DNA binding networks, selections of TFBS panels of which manifest individual\u0000chromosome-specific profiles and species-specific divergence patterns.\u0000Collectively, observations reported in this contribution highlight a previously\u0000unrecognized essential function of human genomic DNA sequences encoded by TE in\u0000providing genome-wide regulatory seed templates of highly conserved\u0000sequence-specific double-stranded DNA binding networks likely contributing to\u0000continuing divergent genomic evolution of human and chimpanzee brain\u0000development.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cecilia Fruet, Ella Linxia Müller, Claude Loverdo, Anne-Florence Bitbol
{"title":"Spatial structure facilitates evolutionary rescue by cost-free drug resistance","authors":"Cecilia Fruet, Ella Linxia Müller, Claude Loverdo, Anne-Florence Bitbol","doi":"arxiv-2409.07377","DOIUrl":"https://doi.org/arxiv-2409.07377","url":null,"abstract":"Bacterial populations often have complex spatial structures, which can impact\u0000their evolution. Here, we study how spatial structure affects the evolution of\u0000antibiotic resistance in a bacterial population. We consider a minimal model of\u0000spatially structured populations where all demes (i.e., subpopulations) are\u0000identical and connected to each other by identical migration rates. We show\u0000that spatial structure can facilitate the survival of a bacterial population to\u0000antibiotic treatment, starting from a sensitive inoculum. Indeed, the bacterial\u0000population can be rescued if antibiotic resistant mutants appear and are\u0000present when drug is added, and spatial structure can impact the fate of these\u0000mutants and the probability that they are present. Specifically, if the\u0000mutation that provides resistance is neutral or effectively neutral, its\u0000probability of fixation is increased in smaller populations. This promotes\u0000local fixation of resistant mutants in the structured population, which\u0000facilitates evolutionary rescue by cost-free drug resistance. Once the\u0000population is rescued by resistance, migrations allow resistant mutants to\u0000spread in all demes. Our main results extend to the case where there are\u0000resistant mutants in the inoculum, and to more complex spatial structures. They\u0000also extend to resistant mutants that carry a fitness cost, although the\u0000timescales involved are longer.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vladimir R. V. Assis, Nazareno G. F. Medeiros, Evandro N. Silva, Alexandre Colato, Ana T. C. Silva
{"title":"Why aphids are not pests in cacao? An approach based on a predator-prey model with aging","authors":"Vladimir R. V. Assis, Nazareno G. F. Medeiros, Evandro N. Silva, Alexandre Colato, Ana T. C. Silva","doi":"arxiv-2409.06861","DOIUrl":"https://doi.org/arxiv-2409.06861","url":null,"abstract":"We studied a mean-field predator-prey model with aging to simulate the\u0000mbox{interaction} between aphids (textit{Toxoptera aurantii}) and syrphid\u0000larvae in mbox{cacao} farms in Ilheus, Bahia. Based on the classical\u0000predator-prey model, we mbox{propose} a system of differential equations with\u0000three rate equations. mbox{Unlike} the original Lotka-Volterra model, our\u0000model includes two aphid population classes: juveniles (non-breeding) and adult\u0000females (asexually breeding). We obtained steady-state solutions for juvenile\u0000and adult populations by mbox{analyzing} the stability of the fixed points as\u0000a function of model mbox{parameters}. The results show that the absorbing\u0000state (zero prey population) is always possible, but not consistently stable. A\u0000nonzero stationary solution is achievable with appropriate parameter values.\u0000Using phase diagrams, we analyzed the mbox{stationary} solution, providing a\u0000comprehensive understanding of the dynamics involved. Simulations on complete\u0000graphs yielded results closely matching the differential equations. We also\u0000performed simulations on random networks to highlight the influence of network\u0000topology on system behavior.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"When can few-species models describe dynamics within a complex community?","authors":"Stav Marcus, Guy Bunin","doi":"arxiv-2409.06379","DOIUrl":"https://doi.org/arxiv-2409.06379","url":null,"abstract":"Dynamics of species' abundances in ecological communities are often described\u0000using models that only account for a few species. It is not clear when and why\u0000this would be possible, as most species form part of diverse ecological\u0000communities, with many species that are not included in these few-variable\u0000descriptions. We study theoretically the circumstances under which the use of\u0000such models is justified, by considering the dynamics of a small set of focal\u0000species embedded within a diverse, sparsely-interacting community. We find that\u0000in some cases the focal species' dynamics are high-dimensional, making a\u0000few-variable description impossible. In other cases we show that such a\u0000description exists, even though the effect of the surrounding community on the\u0000focal species' dynamics is not small or simple. We give two different methods\u0000for approximating the dynamics, by using effective parameters that depend on\u0000the surrounding community, which are relevant under different assumptions on\u0000the relation between the explicitly modeled focal species and the rest of the\u0000species. Both methods work surprisingly well in many of the cases that we\u0000check, with effective dynamics that are often very similar and sometimes\u0000indistinguishable from the true dynamics, even when the effect of the community\u0000on the focal species is significant.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Indirect reciprocity under opinion synchronization","authors":"Yohsuke Murase, Christian Hilbe","doi":"arxiv-2409.05551","DOIUrl":"https://doi.org/arxiv-2409.05551","url":null,"abstract":"Indirect reciprocity is a key explanation for the exceptional magnitude of\u0000cooperation among humans. This literature suggests that a large proportion of\u0000human cooperation is driven by social norms and individuals' incentives to\u0000maintain a good reputation. This intuition has been formalized with two types\u0000of models. In public assessment models, all community members are assumed to\u0000agree on each others' reputations; in private assessment models, people may\u0000have disagreements. Both types of models aim to understand the interplay of\u0000social norms and cooperation. Yet their results can be vastly different. Public\u0000assessment models argue that cooperation can evolve easily, and that the most\u0000effective norms tend to be stern. Private assessment models often find\u0000cooperation to be unstable, and successful norms show some leniency. Here, we\u0000propose a model that can organize these differing results within a single\u0000framework. We show that the stability of cooperation depends on a single\u0000quantity: the extent to which individual opinions turn out to be correlated.\u0000This correlation is determined by a group's norms and the structure of social\u0000interactions. In particular, we prove that no cooperative norm is\u0000evolutionarily stable when individual opinions are statistically independent.\u0000These results have important implications for our understanding of cooperation,\u0000conformity, and polarization.","PeriodicalId":501044,"journal":{"name":"arXiv - QuanBio - Populations and Evolution","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}