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Chevy ET, Min J, Caudill V, Champer SE, Haller BC, Rehmann CT, Smith CCR, Tittes S, Messer PW, Kern AD, Ramachandran S, Ralph PL. Population genetics meets ecology: a guide to individual-based simulations in continuous landscapes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.24.604988. [PMID: 39091875 PMCID: PMC11291129 DOI: 10.1101/2024.07.24.604988] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Individual-based simulation has become an increasingly crucial tool for many fields of population biology. However, implementing realistic and stable simulations in continuous space presents a variety of difficulties, from modeling choices to computational efficiency. This paper aims to be a practical guide to spatial simulation, helping researchers to implement realistic and efficient spatial, individual-based simulations and avoid common pitfalls. To do this, we delve into mechanisms of mating, reproduction, density-dependent feedback, and dispersal, all of which may vary across the landscape, discuss how these affect population dynamics, and describe how to parameterize simulations in convenient ways (for instance, to achieve a desired population density). We also demonstrate how to implement these models using the current version of the individual-based simulator, SLiM. Since SLiM has the capacity to simulate genomes, we also discuss natural selection - in particular, how genetic variation can affect demographic processes. Finally, we provide four short vignettes: simulations of pikas that shift their range up a mountain as temperatures rise; mosquitoes that live in rivers as juveniles and experience seasonally changing habitat; cane toads that expand across Australia, reaching 120 million individuals; and monarch butterflies whose populations are regulated by an explicitly modeled resource (milkweed).
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Affiliation(s)
- Elizabeth T Chevy
- Center for Computational Molecular Biology, Brown University, Providence RI 02912, USA
| | - Jiseon Min
- Institute of Ecology and Evolution, University of Oregon, Eugene OR 97402, USA
| | - Victoria Caudill
- Institute of Ecology and Evolution, University of Oregon, Eugene OR 97402, USA
| | - Samuel E Champer
- Department of Computational Biology, Cornell University, Ithaca NY 14853, USA
| | - Benjamin C Haller
- Department of Computational Biology, Cornell University, Ithaca NY 14853, USA
| | - Clara T Rehmann
- Institute of Ecology and Evolution, University of Oregon, Eugene OR 97402, USA
| | - Chris C R Smith
- Institute of Ecology and Evolution, University of Oregon, Eugene OR 97402, USA
| | - Silas Tittes
- Institute of Ecology and Evolution, University of Oregon, Eugene OR 97402, USA
| | - Philipp W Messer
- Department of Computational Biology, Cornell University, Ithaca NY 14853, USA
| | - Andrew D Kern
- Institute of Ecology and Evolution, University of Oregon, Eugene OR 97402, USA
- Department of Biology, University of Oregon, Eugene OR 97402, USA
| | - Sohini Ramachandran
- Center for Computational Molecular Biology, Brown University, Providence RI 02912, USA
| | - Peter L Ralph
- Institute of Ecology and Evolution, University of Oregon, Eugene OR 97402, USA
- Department of Mathematics, University of Oregon, Eugene OR 97402, USA
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2
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Kosch TA, Torres-Sánchez M, Liedtke HC, Summers K, Yun MH, Crawford AJ, Maddock ST, Ahammed MS, Araújo VLN, Bertola LV, Bucciarelli G, Carné A, Carneiro CM, Chan KO, Chen Y, Crottini A, da Silva JM, Denton RD, Dittrich C, Themudo GE, Farquharson KA, Forsdick NJ, Gilbert E, Jing C, Katzenback BA, Kotharambath R, Levis NA, Márquez R, Mazepa G, Mulder KP, Müller H, O’Connell MJ, Orozco-terWengel P, Palomar G, Petzold A, Pfennig DW, Pfennig KS, Reichert MS, Robert J, Scherz MD, Siu-Ting K, Snead AA, Stöck M, Stuckert AMM, Stynoski JL, Tarvin RD, Valero KCW. The Amphibian Genomics Consortium: advancing genomic and genetic resources for amphibian research and conservation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.27.601086. [PMID: 39005434 PMCID: PMC11244923 DOI: 10.1101/2024.06.27.601086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Amphibians represent a diverse group of tetrapods, marked by deep divergence times between their three systematic orders and families. Studying amphibian biology through the genomics lens increases our understanding of the features of this animal class and that of other terrestrial vertebrates. The need for amphibian genomics resources is more urgent than ever due to the increasing threats to this group. Amphibians are one of the most imperiled taxonomic groups, with approximately 41% of species threatened with extinction due to habitat loss, changes in land use patterns, disease, climate change, and their synergistic effects. Amphibian genomics resources have provided a better understanding of ontogenetic diversity, tissue regeneration, diverse life history and reproductive modes, antipredator strategies, and resilience and adaptive responses. They also serve as critical models for understanding widespread genomic characteristics, including evolutionary genome expansions and contractions given they have the largest range in genome sizes of any animal taxon and multiple mechanisms of genetic sex determination. Despite these features, genome sequencing of amphibians has significantly lagged behind that of other vertebrates, primarily due to the challenges of assembling their large, repeat-rich genomes and the relative lack of societal support. The advent of long-read sequencing technologies, along with computational techniques that enhance scaffolding capabilities and streamline computational workload is now enabling the ability to overcome some of these challenges. To promote and accelerate the production and use of amphibian genomics research through international coordination and collaboration, we launched the Amphibian Genomics Consortium (AGC) in early 2023. This burgeoning community already has more than 282 members from 41 countries (6 in Africa, 131 in the Americas, 27 in Asia, 29 in Australasia, and 89 in Europe). The AGC aims to leverage the diverse capabilities of its members to advance genomic resources for amphibians and bridge the implementation gap between biologists, bioinformaticians, and conservation practitioners. Here we evaluate the state of the field of amphibian genomics, highlight previous studies, present challenges to overcome, and outline how the AGC can enable amphibian genomics research to "leap" to the next level.
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Affiliation(s)
- Tiffany A. Kosch
- One Health Research Group, Melbourne Veterinary School, Faculty of Science, University of Melbourne, Werribee, Victoria, Australia
| | - María Torres-Sánchez
- Department of Biodiversity, Ecology, and Evolution, Complutense University of Madrid, 28040 Madrid, Spain
| | | | - Kyle Summers
- Biology Department, East Carolina University, Greenville, NC, USA 27858
| | - Maximina H. Yun
- Technische Universität Dresden, CRTD/Center for Regenerative Therapies Dresden, Dresden, Germany
- Max Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany
| | - Andrew J. Crawford
- Department of Biological Sciences, Universidad de los Andes, Bogotá, 111711, Colombia
- Museo de Historia Natural C.J. Marinkelle, Universidad de los Andes, Bogotá, 111711, Colombia
| | - Simon T. Maddock
- School of Natural and Environmental Sciences, Newcastle University, UK
- Island Biodiversity and Conservation Centre, University of Seychelles, Seychelles
| | | | - Victor L. N. Araújo
- Department of Biological Sciences, Universidad de los Andes, Bogotá, 111711, Colombia
| | - Lorenzo V. Bertola
- Centre for Tropical Bioinformatics and Molecular Biology, James Cook University, QLD 4810, Australia
| | - Gary Bucciarelli
- Department of Wildlife, Fish, and Conservation Biology, University of California, Davis, USA
| | - Albert Carné
- Museo Nacional de Ciencias Naturales-CSIC, Madrid, Spain
| | - Céline M. Carneiro
- Department of Integrative Biology, The University of Texas at Austin, Austin, TX, USA
| | - Kin O. Chan
- University of Kansas Biodiversity Institute and Natural History Museum, Lawrence, Kansas 66045, USA
| | - Ying Chen
- Biology Department, Queen’s University, Ontario, Canada
| | - Angelica Crottini
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, rua do Campo Alegre s/n, 4169– 007 Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
| | - Jessica M. da Silva
- Evolutionary Genomics and Wildlife Management, Foundatonal Biodiversity Science, Kirstenbosch Research Centre, South African National Biodiversity Institute, Newlands 7735, Cape Town, South Africa
- Centre for Evolutionary Genomics and Wildlife Conservation, Department of Zoology, University of Johannesburg, Auckland Park 2006, Johannesburg, South Africa
| | - Robert D. Denton
- Department of Biology, Marian University, Indianapolis, IN 46222, USA
| | - Carolin Dittrich
- Rojas Lab, Konrad-Lorenz-Institute of Ethology, Department of Life Science, University of Veterinary Medicine, Vienna, Austria
| | - Gonçalo Espregueira Themudo
- CIIMAR Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos, Portugal
| | - Katherine A. Farquharson
- School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW 2006, Australia
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, Sydney, New South Wales, Australia
| | | | - Edward Gilbert
- School of Natural Sciences, The University of Hull, Hull, HU6 7RX, United Kingdom
- Energy and Environment Institute, The University of Hull, Hull, HU6 7RX, United Kingdom
| | - Che Jing
- Key Laboratory of Genetic Evolution and Animal Models, and Yunnan Key Laboratory of Biodiversity and Ecological Conservation of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
- Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar
| | | | - Ramachandran Kotharambath
- Herpetology Lab, Dept. of Zoology, Central University of Kerala, Tejaswini Hills, Kasaragod, Kerala, 671320, India
| | - Nicholas A. Levis
- Department of Biology, Indiana University, Bloomington, IN 47405, USA
| | - Roberto Márquez
- Department of Biological Sciences, Virginia Tech. Blacksburg, VA 24060, USA
| | - Glib Mazepa
- Department of Ecology and Evolution, University of Lausanne, Biophore, 1015, Switzerland
- Department of Ecology and Genetics, Evolutionary Biology, Norbyvägen 18D, 75236 Uppsala, Sweden
| | - Kevin P. Mulder
- Wildlife Health Ghent, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Hendrik Müller
- Central Natural Science Collections, Martin Luther University Halle-Wittenberg, D-06108 Halle (Saale), Germany
| | - Mary J. O’Connell
- School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, UK
| | - Pablo Orozco-terWengel
- School of Biosciences, Cardiff University, Museum Avenue, CF10 3AX Cardiff, United Kingdom
| | - Gemma Palomar
- Department of Genetics, Physiology, and Microbiology; Faculty of Biological Sciences; Complutense University of Madrid, Madrid, Spain
- Institute of Environmental Sciences, Faculty of Biology, Jagiellonian University, Kraków, Poland
| | - Alice Petzold
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht Str.24-25, 14476 Potsdam, Germany
| | - David W. Pfennig
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Karin S. Pfennig
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Michael S. Reichert
- Department of Integrative Biology, Oklahoma State University, Stillwater OK, USA
| | - Jacques Robert
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Mark D. Scherz
- Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen Ø, Denmark
| | - Karen Siu-Ting
- School of Biological Sciences, Queen’s University Belfast, Belfast, BT7 1NN, Northern Ireland, United Kingdom
- Instituto Peruano de Herpetología, Ca. Augusto Salazar Bondy 136, Surco, Lima, Peru
- Herpetology Lab, The Natural History Museum, London, United Kingdom
| | - Anthony A Snead
- Department of Biology, New York University, New York, NY, USA
| | - Matthias Stöck
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301, D-12587 Berlin, Germany
| | - Adam M. M. Stuckert
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, 77204, USA
| | | | - Rebecca D. Tarvin
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
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3
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Yagound B, Sarma RR, Edwards RJ, Richardson MF, Rodriguez Lopez CM, Crossland MR, Brown GP, DeVore JL, Shine R, Rollins LA. Is developmental plasticity triggered by DNA methylation changes in the invasive cane toad ( Rhinella marina)? Ecol Evol 2024; 14:e11127. [PMID: 38450317 PMCID: PMC10917582 DOI: 10.1002/ece3.11127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/08/2024] Open
Abstract
Many organisms can adjust their development according to environmental conditions, including the presence of conspecifics. Although this developmental plasticity is common in amphibians, its underlying molecular mechanisms remain largely unknown. Exposure during development to either 'cannibal cues' from older conspecifics, or 'alarm cues' from injured conspecifics, causes reduced growth and survival in cane toad (Rhinella marina) tadpoles. Epigenetic modifications, such as changes in DNA methylation patterns, are a plausible mechanism underlying these developmental plastic responses. Here we tested this hypothesis, and asked whether cannibal cues and alarm cues trigger the same DNA methylation changes in developing cane toads. We found that exposure to both cannibal cues and alarm cues was associated with local changes in DNA methylation patterns. These DNA methylation changes affected genes putatively involved in developmental processes, but in different genomic regions for different conspecific-derived cues. Genetic background explains most of the epigenetic variation among individuals. Overall, the molecular mechanisms triggered by exposure to cannibal cues seem to differ from those triggered by alarm cues. Studies linking epigenetic modifications to transcriptional activity are needed to clarify the proximate mechanisms that regulate developmental plasticity in cane toads.
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Affiliation(s)
- Boris Yagound
- Evolution & Ecology Research Centre, Biological, Earth and Environmental SciencesUniversity of New South WalesSydneyNew South WalesAustralia
| | - Roshmi R. Sarma
- Evolution & Ecology Research Centre, Biological, Earth and Environmental SciencesUniversity of New South WalesSydneyNew South WalesAustralia
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
| | - Richard J. Edwards
- Evolution & Ecology Research Centre, School of Biotechnology and Biomedical SciencesUniversity of New South WalesSydneyNew South WalesAustralia
- Minderoo OceanOmics Centre at UWA, Oceans InstituteDeakin UniversityGeelongVictoriaAustralia
| | - Mark F. Richardson
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
- Minderoo OceanOmics Centre at UWA, Oceans InstituteDeakin UniversityGeelongVictoriaAustralia
- Deakin Genomics Research and Discovery FacilityDeakin University, Locked BagGeelongVICAustralia
| | - Carlos M. Rodriguez Lopez
- Deakin Genomics Research and Discovery FacilityDeakin University, Locked BagGeelongVICAustralia
- School of Agriculture, Food and Wine, Waite Research InstituteThe University of AdelaideGlen OsmondSouth AustraliaAustralia
- Environmental Epigenetics and Genetics Group, Department of HorticultureCollege of Agriculture, Food and Environment, University of KentuckyLexingtonKentuckyUSA
| | - Michael R. Crossland
- School of Agriculture, Food and Wine, Waite Research InstituteThe University of AdelaideGlen OsmondSouth AustraliaAustralia
- School of Life and Environmental SciencesUniversity of SydneySydneyNew South WalesAustralia
| | - Gregory P. Brown
- School of Agriculture, Food and Wine, Waite Research InstituteThe University of AdelaideGlen OsmondSouth AustraliaAustralia
- School of Life and Environmental SciencesUniversity of SydneySydneyNew South WalesAustralia
- Department of Biological SciencesMacquarie UniversitySydneyNew South WalesAustralia
| | - Jayna L. DeVore
- School of Agriculture, Food and Wine, Waite Research InstituteThe University of AdelaideGlen OsmondSouth AustraliaAustralia
- School of Life and Environmental SciencesUniversity of SydneySydneyNew South WalesAustralia
- UMR 241 EIOUniversity of French Polynesia, IFREMER, ILM, IRDFaa’aTahitiFrench Polynesia
| | - Richard Shine
- School of Agriculture, Food and Wine, Waite Research InstituteThe University of AdelaideGlen OsmondSouth AustraliaAustralia
- School of Life and Environmental SciencesUniversity of SydneySydneyNew South WalesAustralia
- Department of Biological SciencesMacquarie UniversitySydneyNew South WalesAustralia
| | - Lee A. Rollins
- Evolution & Ecology Research Centre, Biological, Earth and Environmental SciencesUniversity of New South WalesSydneyNew South WalesAustralia
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
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