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Dalui S, Sharma LK, Thakur M. Barriers and corridors: Assessment of gene flow and movement among red panda populations in eastern Himalayas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 931:172523. [PMID: 38657804 DOI: 10.1016/j.scitotenv.2024.172523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 04/14/2024] [Accepted: 04/14/2024] [Indexed: 04/26/2024]
Abstract
Landscape features can impede dispersal, gene flow, and population demography, resulting in the formation of several meta-populations within a continuous landscape. Understanding a species' ability to overcome these barriers is critical for predicting genetic connectivity and population persistence, and implementing effective conservation strategies. In the present study, we conducted a fine-scale spatial genetic analysis to understand the contemporary gene flow within red panda populations in the Eastern Himalayas. Employing geometric aspects of reserve design, we delineated the critical core habitats for red pandas, which comprise 14.5 % of the landscape (12,189.75 Km2), with only a mere 443 Km2 falling within the protected areas. We identified corridors among the core habitats, which may be vital for the species' long-term genetic viability. Furthermore, we identified substantial landscape barriers, including Sela Pass in the western region, Siang river in the central region, and the Dibang river, Lohit river, along with Dihang, Dipher, and Kumjawng passes in the eastern region, which hinder gene flow. We suggest managing red panda populations through the creation of Community Conservation Reserves in the identified core habitats, following landscape-level management planning based on the core principles of geometric reserve design. This includes a specific emphasis on identified core habitats of red panda (CH-RP 5 and CH-RP 8) to facilitate corridors and implement meta-population dynamics. We propose the development of a comprehensive, long-term conservation and management plan for red pandas in the transboundary landscape, covering China, Nepal, and Bhutan.
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Affiliation(s)
- Supriyo Dalui
- Zoological Survey of India, New Alipore, Kolkata, West Bengal 700053, India; Department of Zoology, University of Calcutta, Kolkata, West Bengal 700019, India
| | - Lalit Kumar Sharma
- Zoological Survey of India, New Alipore, Kolkata, West Bengal 700053, India
| | - Mukesh Thakur
- Zoological Survey of India, New Alipore, Kolkata, West Bengal 700053, India.
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2
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Billenstein RJ, Höhna S. Comparison of Bayesian Coalescent Skyline Plot Models for Inferring Demographic Histories. Mol Biol Evol 2024; 41:msae073. [PMID: 38630635 PMCID: PMC11068272 DOI: 10.1093/molbev/msae073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 02/16/2024] [Accepted: 04/01/2024] [Indexed: 04/19/2024] Open
Abstract
Bayesian coalescent skyline plot models are widely used to infer demographic histories. The first (non-Bayesian) coalescent skyline plot model assumed a known genealogy as data, while subsequent models and implementations jointly inferred the genealogy and demographic history from sequence data, including heterochronous samples. Overall, there exist multiple different Bayesian coalescent skyline plot models which mainly differ in two key aspects: (i) how changes in population size are modeled through independent or autocorrelated prior distributions, and (ii) how many change-points in the demographic history are used, where they occur and if the number is pre-specified or inferred. The specific impact of each of these choices on the inferred demographic history is not known because of two reasons: first, not all models are implemented in the same software, and second, each model implementation makes specific choices that the biologist cannot influence. To facilitate a detailed evaluation of Bayesian coalescent skyline plot models, we implemented all currently described models in a flexible design into the software RevBayes. Furthermore, we evaluated models and choices on an empirical dataset of horses supplemented by a small simulation study. We find that estimated demographic histories can be grouped broadly into two groups depending on how change-points in the demographic history are specified (either independent of or at coalescent events). Our simulations suggest that models using change-points at coalescent events produce spurious variation near the present, while most models using independent change-points tend to over-smooth the inferred demographic history.
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Affiliation(s)
- Ronja J Billenstein
- GeoBio-Center, Ludwig-Maximilians-Universität München, Munich 80333, Germany
- Department of Earth and Environmental Sciences, Paleontology & Geobiology, Ludwig-Maximilians-Universität München, Munich 80333, Germany
| | - Sebastian Höhna
- GeoBio-Center, Ludwig-Maximilians-Universität München, Munich 80333, Germany
- Department of Earth and Environmental Sciences, Paleontology & Geobiology, Ludwig-Maximilians-Universität München, Munich 80333, Germany
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3
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Guyon L, Guez J, Toupance B, Heyer E, Chaix R. Patrilineal segmentary systems provide a peaceful explanation for the post-Neolithic Y-chromosome bottleneck. Nat Commun 2024; 15:3243. [PMID: 38658560 PMCID: PMC11043392 DOI: 10.1038/s41467-024-47618-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 04/08/2024] [Indexed: 04/26/2024] Open
Abstract
Studies have found a pronounced decline in male effective population sizes worldwide around 3000-5000 years ago. This bottleneck was not observed for female effective population sizes, which continued to increase over time. Until now, this remarkable genetic pattern was interpreted as the result of an ancient structuring of human populations into patrilineal groups (gathering closely related males) violently competing with each other. In this scenario, violence is responsible for the repeated extinctions of patrilineal groups, leading to a significant reduction in male effective population size. Here, we propose an alternative hypothesis by modelling a segmentary patrilineal system based on anthropological literature. We show that variance in reproductive success between patrilineal groups, combined with lineal fission (i.e., the splitting of a group into two new groups of patrilineally related individuals), can lead to a substantial reduction in the male effective population size without resorting to the violence hypothesis. Thus, a peaceful explanation involving ancient changes in social structures, linked to global changes in subsistence systems, may be sufficient to explain the reported decline in Y-chromosome diversity.
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Affiliation(s)
- Léa Guyon
- Eco-Anthropologie (UMR 7206), Muséum National d'Histoire Naturelle, CNRS, Université Paris Cité, Paris, 75116, France.
| | - Jérémy Guez
- Eco-Anthropologie (UMR 7206), Muséum National d'Histoire Naturelle, CNRS, Université Paris Cité, Paris, 75116, France
- Université Paris-Saclay, CNRS, INRIA, Laboratoire Interdisciplinaire des Sciences du Numérique, Orsay, 91400, France
| | - Bruno Toupance
- Eco-Anthropologie (UMR 7206), Muséum National d'Histoire Naturelle, CNRS, Université Paris Cité, Paris, 75116, France
- Université Paris Cité, Eco-anthropologie, Paris, F-75006, France
| | - Evelyne Heyer
- Eco-Anthropologie (UMR 7206), Muséum National d'Histoire Naturelle, CNRS, Université Paris Cité, Paris, 75116, France
| | - Raphaëlle Chaix
- Eco-Anthropologie (UMR 7206), Muséum National d'Histoire Naturelle, CNRS, Université Paris Cité, Paris, 75116, France.
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4
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Jablonski D, Mebert K, Masroor R, Simonov E, Kukushkin O, Abduraupov T, Hofmann S. The Silk roads: phylogeography of Central Asian dice snakes (Serpentes: Natricidae) shaped by rivers in deserts and mountain valleys. Curr Zool 2024; 70:150-162. [PMID: 38726254 PMCID: PMC11078056 DOI: 10.1093/cz/zoad008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 03/02/2023] [Indexed: 05/12/2024] Open
Abstract
Influenced by rapid changes in climate and landscape features since the Miocene, widely distributed species provide suitable models to study the environmental impact on their evolution and current genetic diversity. The dice snake Natrix tessellata, widely distributed in the Western Palearctic is one such species. We aimed to resolve a detailed phylogeography of N. tessellata with a focus on the Central Asian clade with 4 and the Anatolia clade with 3 mitochondrial lineages, trace their origin, and correlate the environmental changes that affected their distribution through time. The expected time of divergence of both clades began at 3.7 Mya in the Pliocene, reaching lineage differentiation approximately 1 million years later. The genetic diversity in both clades is rich, suggesting different ancestral areas, glacial refugia, demographic changes, and colonization routes. The Caspian lineage is the most widespread lineage in Central Asia, distributed around the Caspian Sea and reaching the foothills of the Hindu Kush Mountains in Afghanistan, and Eastern European lowlands in the west. Its distribution is limited by deserts, mountains, and cold steppe environments. Similarly, Kazakhstan and Uzbekistan lineages followed the Amu Darya and the Syr Darya water systems in Central Asia, with ranges delimited by the large Kyzylkum and Karakum deserts. On the western side, there are several lineages within the Anatolia clade that converged in the central part of the peninsula with 2 being endemic to Western Asia. The distribution of both main clades was affected by expansion from their Pleistocene glacial refugia around the Caspian Sea and in the valleys of Central Asia as well as by environmental changes, mostly through aridification.
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Affiliation(s)
- Daniel Jablonski
- Department of Zoology, Comenius University in Bratislava, Bratislava, Slovakia
| | | | - Rafaqat Masroor
- Pakistan Museum of Natural History, Shakarparian, Islamabad, Pakistan
| | - Evgeniy Simonov
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
| | - Oleg Kukushkin
- T. I. Vyazemski Karadag Scientific Station—Nature Reserve—Branch of A.O. Kovalevsky Institute of Biology of the Southern Seas, Theodosia, Crimea
- Zoological Institute of the RAS, Saint Petersbourg, Russia
| | - Timur Abduraupov
- Institute of Zoology, Academy of Sciences of the Republic of Uzbekistan, Yunusabad, Tashkent, Uzbekistan
| | - Sylvia Hofmann
- Museum Koenig Bonn, LIB—Leibniz Institute for the Analysis of Biodiversity Change, Bonn, Germany
- UFZ – Helmholtz Centre for Environmental Research, Department of Conservation Biology, Permoserstrasse 15, 04318 Leipzig, Germany
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Nardi F, Boschi S, Funari R, Cucini C, Cardaioli E, Potter D, Asano SI, Toubarro D, Meier M, Paoli F, Carapelli A, Frati F. The direction, timing and demography of Popillia japonica (Coleoptera) invasion reconstructed using complete mitochondrial genomes. Sci Rep 2024; 14:7120. [PMID: 38531924 DOI: 10.1038/s41598-024-57667-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 03/20/2024] [Indexed: 03/28/2024] Open
Abstract
The Japanese beetle Popillia japonica is a pest insect that feeds on hundreds of species of wild and cultivated plants including important fruit, vegetable, and field crops. Native to Japan, the pest has invaded large areas of the USA, Canada, the Azores (Portugal), Italy, and Ticino (Switzerland), and it is considered a priority for control in the European Union. We determined the complete mitochondrial genome sequence in 86 individuals covering the entire distribution of the species. Phylogenetic analysis supports a major division between South Japan and Central/North Japan, with invasive samples coming from the latter. The origin of invasive USA samples is incompatible, in terms of the timing of the event, with a single introduction, with multiple Japanese lineages having been introduced and one accounting for most of the population expansion locally. The origin of the two invasive European populations is compatible with two different invasions followed by minimal differentiation locally. Population analyses provide the possibility to estimate the rate of sequence change from the data and to date major invasion events. Demographic analysis identifies a population expansion followed by a period of contraction prior to the invasion. The present study adds a time and demographic dimension to available reconstructions.
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Affiliation(s)
- Francesco Nardi
- Department of Life Sciences, University of Siena, via Aldo Moro 2, 53100, Siena, Italy.
- NBFC, National Biodiversity Future Center, Palermo, Italy.
- BAT-Center, Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, Portici, Italy.
| | - Sara Boschi
- Department of Life Sciences, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Rebecca Funari
- Department of Life Sciences, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Claudio Cucini
- Department of Life Sciences, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Elena Cardaioli
- Department of Life Sciences, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
| | - Daniel Potter
- Department of Entomology, University of Kentucky, Lexington, USA
| | - Shin-Ichiro Asano
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Duarte Toubarro
- Biotechnology Centre of Azores, University of the Azores, Ponta Delgada, Portugal
| | - Michela Meier
- Servizio fitosanitario cantonale, Dipartimento delle finanze e dell'economia, Bellinzona, Switzerland
| | - Francesco Paoli
- Council for Agricultural Research and Agricultural Economy Analysis (CREA), Florence, Italy
| | - Antonio Carapelli
- Department of Life Sciences, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
- BAT-Center, Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, Portici, Italy
| | - Francesco Frati
- Department of Life Sciences, University of Siena, via Aldo Moro 2, 53100, Siena, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
- BAT-Center, Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, Portici, Italy
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6
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Müller NF, Bouckaert RR, Wu CH, Bedford T. MASCOT-Skyline integrates population and migration dynamics to enhance phylogeographic reconstructions. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.06.583734. [PMID: 38496513 PMCID: PMC10942421 DOI: 10.1101/2024.03.06.583734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
The spread of infectious diseases is shaped by spatial and temporal aspects, such as host population structure or changes in the transmission rate or number of infected individuals over time. These spatiotemporal dynamics are imprinted in the genome of pathogens and can be recovered from those genomes using phylodynamics methods. However, phylodynamic methods typically quantify either the temporal or spatial transmission dynamics, which leads to unclear biases, as one can potentially not be inferred without the other. Here, we address this challenge by introducing a structured coalescent skyline approach, MASCOT-Skyline that allows us to jointly infer spatial and temporal transmission dynamics of infectious diseases using Markov chain Monte Carlo inference. To do so, we model the effective population size dynamics in different locations using a non-parametric function, allowing us to approximate a range of population size dynamics. We show, using a range of different viral outbreak datasets, potential issues with phylogeographic methods. We then use these viral datasets to motivate simulations of outbreaks that illuminate the nature of biases present in the different phylogeographic methods. We show that spatial and temporal dynamics should be modeled jointly even if one seeks to recover just one of the two. Further, we showcase conditions under which we can expect phylogeographic analyses to be biased, particularly different subsampling approaches, as well as provide recommendations of when we can expect them to perform well. We implemented MASCOT-Skyline as part of the open-source software package MASCOT for the Bayesian phylodynamics platform BEAST2.
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Affiliation(s)
- Nicola F. Müller
- Division of HIV, ID and Global Medicine, University of California San Francisco, San Francisco, USA
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, USA
| | - Remco R. Bouckaert
- Centre for Computational Evolution, The University of Auckland, New Zealand
| | - Chieh-Hsi Wu
- School of Mathematical Sciences, University of Southampton, UK
| | - Trevor Bedford
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, USA
- Howard Hughes Medical Institute, Seattle, USA
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7
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Batalha-Filho H, Barreto SB, Silveira MHB, Miyaki CY, Afonso S, Ferrand N, Carneiro M, Sequeira F. Disentangling the contemporary and historical effects of landscape on the population genomic variation of two bird species restricted to the highland forest enclaves of northeastern Brazil. Heredity (Edinb) 2024; 132:77-88. [PMID: 37985738 PMCID: PMC10844224 DOI: 10.1038/s41437-023-00662-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 11/02/2023] [Accepted: 11/02/2023] [Indexed: 11/22/2023] Open
Abstract
Investigating the impact of landscape features on patterns of genetic variation is crucial to understand spatially dependent evolutionary processes. Here, we assess the population genomic variation of two bird species (Conopophaga cearae and Sclerurus cearensis) through the Caatinga moist forest enclaves in northeastern Brazil. To infer the evolutionary dynamics of bird populations through the Late Quaternary, we used genome-wide polymorphism data obtained from double-digestion restriction-site-associated DNA sequencing (ddRADseq), and integrated population structure analyses, historical demography models, paleodistribution modeling, and landscape genetics analyses. We found the population differentiation among enclaves to be significantly related to the geographic distance and historical resistance across the rugged landscape. The climate changes at the end of the Pleistocene to the Holocene likely triggered synchronic population decline in all enclaves for both species. Our findings revealed that both geographic distance and historical connectivity through highlands are important factors that can explain the current patterns of genetic variation. Our results further suggest that levels of population differentiation and connectivity cannot be explained purely on the basis of contemporary environmental conditions. By combining historical demographic analyses and niche modeling predictions in a historical framework, we provide strong evidence that climate fluctuations of the Quaternary promoted population differentiation and a high degree of temporal synchrony among population size changes in both species.
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Affiliation(s)
- Henrique Batalha-Filho
- National Institute of Science and Technology in Interdisciplinary and Transdisciplinary Studies in Ecology and Evolution (INCT IN-TREE), Institute of Biology, Federal University of Bahia, Salvador, BA, Brazil.
| | - Silvia Britto Barreto
- National Institute of Science and Technology in Interdisciplinary and Transdisciplinary Studies in Ecology and Evolution (INCT IN-TREE), Institute of Biology, Federal University of Bahia, Salvador, BA, Brazil
| | - Mario Henrique Barros Silveira
- National Institute of Science and Technology in Interdisciplinary and Transdisciplinary Studies in Ecology and Evolution (INCT IN-TREE), Institute of Biology, Federal University of Bahia, Salvador, BA, Brazil
| | - Cristina Yumi Miyaki
- Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Sandra Afonso
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, BIOPOLIS Program in Genomics, Biodiversity and Land Planning, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Portugal
| | - Nuno Ferrand
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, BIOPOLIS Program in Genomics, Biodiversity and Land Planning, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Miguel Carneiro
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, BIOPOLIS Program in Genomics, Biodiversity and Land Planning, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Portugal
| | - Fernando Sequeira
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, BIOPOLIS Program in Genomics, Biodiversity and Land Planning, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
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8
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Teixeira H, Le Corre M, Michon L, Nicoll MAC, Jaeger A, Nikolic N, Pinet P, Couzi FX, Humeau L. Past volcanic activity predisposes an endemic threatened seabird to negative anthropogenic impacts. Sci Rep 2024; 14:1960. [PMID: 38263429 PMCID: PMC10805739 DOI: 10.1038/s41598-024-52556-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/19/2024] [Indexed: 01/25/2024] Open
Abstract
Humans are regularly cited as the main driver of current biodiversity extinction, but the impact of historic volcanic activity is often overlooked. Pre-human evidence of wildlife abundance and diversity are essential for disentangling anthropogenic impacts from natural events. Réunion Island, with its intense and well-documented volcanic activity, endemic biodiversity, long history of isolation and recent human colonization, provides an opportunity to disentangle these processes. We track past demographic changes of a critically endangered seabird, the Mascarene petrel Pseudobulweria aterrima, using genome-wide SNPs. Coalescent modeling suggested that a large ancestral population underwent a substantial population decline in two distinct phases, ca. 125,000 and 37,000 years ago, coinciding with periods of major eruptions of Piton des Neiges. Subsequently, the ancestral population was fragmented into the two known colonies, ca. 1500 years ago, following eruptions of Piton de la Fournaise. In the last century, both colonies declined significantly due to anthropogenic activities, and although the species was initially considered extinct, it was rediscovered in the 1970s. Our findings suggest that the current conservation status of wildlife on volcanic islands should be firstly assessed as a legacy of historic volcanic activity, and thereafter by the increasing anthropogenic impacts, which may ultimately drive species towards extinction.
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Affiliation(s)
- Helena Teixeira
- UMR ENTROPIE (Université de La Réunion, IRD, CNRS, IFREMER, Université de Nouvelle-Calédonie), 15 Avenue René Cassin, CS 92003, 97744, Saint Denis Cedex 9, Ile de La Réunion, France.
| | - Matthieu Le Corre
- UMR ENTROPIE (Université de La Réunion, IRD, CNRS, IFREMER, Université de Nouvelle-Calédonie), 15 Avenue René Cassin, CS 92003, 97744, Saint Denis Cedex 9, Ile de La Réunion, France
| | - Laurent Michon
- Université de La Réunion, Laboratoire Géosciences Réunion, 97744, Saint Denis, France
- Université Paris Cité, Institut de physique du globe de Paris, CNRS, 75005, Paris, France
| | - Malcolm A C Nicoll
- Institute of Zoology, Zoological Society of London, Regent's Park, London, NW1 4RY, UK
| | - Audrey Jaeger
- UMR ENTROPIE (Université de La Réunion, IRD, CNRS, IFREMER, Université de Nouvelle-Calédonie), 15 Avenue René Cassin, CS 92003, 97744, Saint Denis Cedex 9, Ile de La Réunion, France
| | | | - Patrick Pinet
- Parc National de La Réunion, Life+ Pétrels, 258 Rue de la République, 97431, Plaine des Palmistes, Réunion Island, France
| | - François-Xavier Couzi
- Société d'Etudes Ornithologiques de La Réunion (SEOR), 13 ruelle des Orchidées, 97440, Saint André, Réunion Island, France
| | - Laurence Humeau
- UMR PVBMT (Université de La Réunion, CIRAD), 15 Avenue René Cassin, CS 92003, 97744, Saint Denis Cedex 9, Ile de La Réunion, France
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9
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Thom G, Moreira LR, Batista R, Gehara M, Aleixo A, Smith BT. Genomic Architecture Predicts Tree Topology, Population Structuring, and Demographic History in Amazonian Birds. Genome Biol Evol 2024; 16:evae002. [PMID: 38236173 PMCID: PMC10823491 DOI: 10.1093/gbe/evae002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 10/26/2023] [Accepted: 12/12/2023] [Indexed: 01/19/2024] Open
Abstract
Geographic barriers are frequently invoked to explain genetic structuring across the landscape. However, inferences on the spatial and temporal origins of population variation have been largely limited to evolutionary neutral models, ignoring the potential role of natural selection and intrinsic genomic processes known as genomic architecture in producing heterogeneity in differentiation across the genome. To test how variation in genomic characteristics (e.g. recombination rate) impacts our ability to reconstruct general patterns of differentiation between species that cooccur across geographic barriers, we sequenced the whole genomes of multiple bird populations that are distributed across rivers in southeastern Amazonia. We found that phylogenetic relationships within species and demographic parameters varied across the genome in predictable ways. Genetic diversity was positively associated with recombination rate and negatively associated with species tree support. Gene flow was less pervasive in genomic regions of low recombination, making these windows more likely to retain patterns of population structuring that matched the species tree. We further found that approximately a third of the genome showed evidence of selective sweeps and linked selection, skewing genome-wide estimates of effective population sizes and gene flow between populations toward lower values. In sum, we showed that the effects of intrinsic genomic characteristics and selection can be disentangled from neutral processes to elucidate spatial patterns of population differentiation.
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Affiliation(s)
- Gregory Thom
- Department of Ornithology, American Museum of Natural History, New York, NY, USA
- Museum of Natural Science, Louisiana State University, Baton Rouge, LA, USA
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - Lucas Rocha Moreira
- Program in Bioinformatics and Integrative Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Department of Vertebrate Genomics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Romina Batista
- Programa de Coleções Biológicas, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
- School of Science, Engineering and Environment, University of Salford, Manchester, UK
| | - Marcelo Gehara
- Department of Earth and Environmental Sciences, Rutgers University, Newark, NJ, USA
| | - Alexandre Aleixo
- Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
- Department of Environmental Genomics, Instituto Tecnológico Vale, Belém, Brazil
| | - Brian Tilston Smith
- Department of Ornithology, American Museum of Natural History, New York, NY, USA
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10
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Marchi N, Kapopoulou A, Excoffier L. Demogenomic inference from spatially and temporally heterogeneous samples. Mol Ecol Resour 2024; 24:e13877. [PMID: 37819677 DOI: 10.1111/1755-0998.13877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 09/15/2023] [Accepted: 09/27/2023] [Indexed: 10/13/2023]
Abstract
Modern and ancient genomes are not necessarily drawn from homogeneous populations, as they may have been collected from different places and at different times. This heterogeneous sampling can be an issue for demographic inferences and results in biased demographic parameters and incorrect model choice if not properly considered. When explicitly accounted for, it can result in very complex models and high data dimensionality that are difficult to analyse. In this paper, we formally study the impact of such spatial and temporal sampling heterogeneity on demographic inference, and we introduce a way to circumvent this problem. To deal with structured samples without increasing the dimensionality of the site frequency spectrum (SFS), we introduce a new structured approach to the existing program fastsimcoal2. We assess the efficiency and relevance of this methodological update with simulated and modern human genomic data. We particularly focus on spatial and temporal heterogeneities to evidence the interest of this new SFS-based approach, which can be especially useful when handling scattered and ancient DNA samples, as in conservation genetics or archaeogenetics.
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Affiliation(s)
- Nina Marchi
- CMPG, Institute for Ecology and Evolution, University of Berne, Berne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Adamandia Kapopoulou
- CMPG, Institute for Ecology and Evolution, University of Berne, Berne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Laurent Excoffier
- CMPG, Institute for Ecology and Evolution, University of Berne, Berne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
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11
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Novo I, Ordás P, Moraga N, Santiago E, Quesada H, Caballero A. Impact of population structure in the estimation of recent historical effective population size by the software GONE. Genet Sel Evol 2023; 55:86. [PMID: 38049712 PMCID: PMC10694967 DOI: 10.1186/s12711-023-00859-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 11/20/2023] [Indexed: 12/06/2023] Open
Abstract
BACKGROUND Effective population size (Ne) is a crucial parameter in conservation genetics and animal breeding. A recent method, implemented by the software GONE, has been shown to be rather accurate in estimating recent historical changes in Ne from a single sample of individuals. However, GONE estimations assume that the population being studied has remained isolated for a period of time, that is, without migration or confluence of other populations. If this occurs, the estimates of Ne can be heavily biased. In this paper, we evaluate the impact of migration and admixture on the estimates of historical Ne provided by GONE through a series of computer simulations considering several scenarios: (a) the mixture of two or more ancestral populations; (b) subpopulations that continuously exchange individuals through migration; (c) populations receiving migrants from a large source; and (d) populations with balanced systems of chromosomal inversions, which also generate genetic structure. RESULTS Our results indicate that the estimates of historical Ne provided by GONE may be substantially biased when there has been a recent mixture of populations that were previously separated for a long period of time. Similarly, biases may occur when the rate of continued migration between populations is low, or when chromosomal inversions are present at high frequencies. However, some biases due to population structuring can be eliminated by conducting population structure analyses and restricting the estimation to the differentiated groups. In addition, disregarding the genomic regions that are involved in inversions can also remove biases in the estimates of Ne. CONCLUSIONS Different kinds of deviations from isolation and panmixia of the populations can generate biases in the recent historical estimates of Ne. Therefore, estimation of past demography could benefit from performing population structure analyses beforehand, by mitigating the impact of these biases on historical Ne estimates.
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Affiliation(s)
- Irene Novo
- Centro de Investigación Mariña, Universidade de Vigo, Facultade de Bioloxía, 36310, Vigo, Spain.
| | - Pilar Ordás
- Centro de Investigación Mariña, Universidade de Vigo, Facultade de Bioloxía, 36310, Vigo, Spain
| | - Natalia Moraga
- Centro de Investigación Mariña, Universidade de Vigo, Facultade de Bioloxía, 36310, Vigo, Spain
| | - Enrique Santiago
- Departamento de Biología Funcional, Facultad de Biología, Universidad de Oviedo, 33006, Oviedo, Spain
| | - Humberto Quesada
- Centro de Investigación Mariña, Universidade de Vigo, Facultade de Bioloxía, 36310, Vigo, Spain
| | - Armando Caballero
- Centro de Investigación Mariña, Universidade de Vigo, Facultade de Bioloxía, 36310, Vigo, Spain
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12
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Duckett DJ, Calder K, Sullivan J, Tank DC, Carstens BC. Reduced representation approaches produce similar results to whole genome sequencing for some common phylogeographic analyses. PLoS One 2023; 18:e0291941. [PMID: 38032899 PMCID: PMC10688678 DOI: 10.1371/journal.pone.0291941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 09/09/2023] [Indexed: 12/02/2023] Open
Abstract
When designing phylogeographic investigations researchers can choose to collect many different types of molecular markers, including mitochondrial genes or genomes, SNPs from reduced representation protocols, large sequence capture data sets, and even whole genomes. Given that the statistical power and accuracy of various analyses are expected to differ depending on both the type of marker and the amount of data collected, an exploration of the variance across methodological results as a function of marker type should provide valuable information to researchers. Here we collect mitochondrial Cytochrome b sequences, whole mitochondrial genomes, single nucleotide polymorphisms (SNP)s isolated using a genotype by sequencing (GBS) protocol, sequences from ultraconserved elements, and low-coverage nuclear genomes from the North American water vole (Microtus richardsoni). We estimate genetic distances, population genetic structure, and historical demography using data from each of these datasets and compare the results across markers. As anticipated, the results exhibit differences across marker types, particularly in terms of the resolution offered by different analyses. A cost-benefit analysis indicates that SNPs collected using a GBS protocol are the most cost-effective molecular marker, with inferences that mirror those collected from the whole genome data at a fraction of the cost per sample.
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Affiliation(s)
- Drew J. Duckett
- Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH, United States of America
| | - Kailee Calder
- College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States of America
| | - Jack Sullivan
- Department of Biological Sciences, University of Idaho, Moscow, ID, United States of America
| | - David C. Tank
- Department of Botany, University of Wyoming, Laramie, WY, United States of America
| | - Bryan C. Carstens
- Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH, United States of America
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13
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Ruiz-Puerta EJ, Keighley X, Desjardins SPA, Gotfredsen AB, Pan SE, Star B, Boessenkool S, Barrett JH, McCarthy ML, Andersen LW, Born EW, Howse LR, Szpak P, Pálsson S, Malmquist HJ, Rufolo S, Jordan PD, Olsen MT. Holocene deglaciation drove rapid genetic diversification of Atlantic walrus. Proc Biol Sci 2023; 290:20231349. [PMID: 37752842 PMCID: PMC10523089 DOI: 10.1098/rspb.2023.1349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 08/27/2023] [Indexed: 09/28/2023] Open
Abstract
Rapid global warming is severely impacting Arctic ecosystems and is predicted to transform the abundance, distribution and genetic diversity of Arctic species, though these linkages are poorly understood. We address this gap in knowledge using palaeogenomics to examine how earlier periods of global warming influenced the genetic diversity of Atlantic walrus (Odobenus rosmarus rosmarus), a species closely associated with sea ice and shallow-water habitats. We analysed 82 ancient and historical Atlantic walrus mitochondrial genomes (mitogenomes), including now-extinct populations in Iceland and the Canadian Maritimes, to reconstruct the Atlantic walrus' response to Arctic deglaciation. Our results demonstrate that the phylogeography and genetic diversity of Atlantic walrus populations was initially shaped by the last glacial maximum (LGM), surviving in distinct glacial refugia, and subsequently expanding rapidly in multiple migration waves during the late Pleistocene and early Holocene. The timing of diversification and establishment of distinct populations corresponds closely with the chronology of the glacial retreat, pointing to a strong link between walrus phylogeography and sea ice. Our results indicate that accelerated ice loss in the modern Arctic may trigger further dispersal events, likely increasing the connectivity of northern stocks while isolating more southerly stocks putatively caught in small pockets of suitable habitat.
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Affiliation(s)
- Emily J. Ruiz-Puerta
- Section for Molecular Ecology and Evolution, Globe Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5-7, 1353 Copenhagen Kobenhavn, Denmark
- Arctic Centre & Groningen Institute of Archaeology, Faculty of Arts, University of Groningen, PO Box 716, 9700 AS Groningen, The Netherlands
| | - Xénia Keighley
- Section for Molecular Ecology and Evolution, Globe Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5-7, 1353 Copenhagen Kobenhavn, Denmark
- The Bureau of Meteorology, The Treasury Building, Parkes Place West, Parkes, Australian Capital Territory 2600, Australia
| | - Sean P. A. Desjardins
- Arctic Centre & Groningen Institute of Archaeology, Faculty of Arts, University of Groningen, PO Box 716, 9700 AS Groningen, The Netherlands
- Palaeobiology Section, Canadian Museum of Nature, PO Box 3443, Station D, Ottawa, Ontario, Canada K1P 6P4
| | - Anne Birgitte Gotfredsen
- Section for GeoGenetics, Globe Institute, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen Kobenhavn, Denmark
| | - Shyong En Pan
- Palaeobiology Section, Canadian Museum of Nature, PO Box 3443, Station D, Ottawa, Ontario, Canada K1P 6P4
| | - Bastiaan Star
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | - Sanne Boessenkool
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | - James H. Barrett
- Department of Archaeology and Cultural History, NTNU University Museum, 7491 Trondheim, Norway
- McDonald Institute for Archaeological Research, Department of Archaeology, University of Cambridge, Downing Street, Cambridge CB2 3ER, UK
| | - Morgan L. McCarthy
- Section for Molecular Ecology and Evolution, Globe Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5-7, 1353 Copenhagen Kobenhavn, Denmark
| | - Liselotte W. Andersen
- Department of Ecoscience, Aarhus University, CF Møllers Allé 4-8, build. 1110, 8000 Aarhus C, Denmark
| | - Erik W. Born
- Greenland Institute of Natural Resources, PO Box 570, 3900 Nuuk, Greenland
| | - Lesley R. Howse
- Archaeology Centre, University of Toronto, 19 Ursula Franklin Street, Toronto, Ontario Canada M5S 2S2
| | - Paul Szpak
- Department of Anthropology, Trent University, 1600 West Bank Drive, Peterborough, Ontario, Canada K9L 0G2
| | - Snæbjörn Pálsson
- Faculty of Life and Environmental Sciences, University of Iceland, Askja, Sturlugata 7, 101 Reykjavik, Iceland
| | - Hilmar J. Malmquist
- Icelandic Museum of Natural History, Suðurlandsbraut 24, 108 Reykjavík, Iceland
| | - Scott Rufolo
- Palaeobiology Section, Canadian Museum of Nature, PO Box 3443, Station D, Ottawa, Ontario, Canada K1P 6P4
| | - Peter D. Jordan
- Department of Archaeology and Ancient History, Lund University, Helgonavägen 3, 223 62 Lund, Sweden
- Global Station for Indigenous Studies and Cultural Diversity (GSI), GI-CoRE, HokkaidoUniversity, Japan
| | - Morten Tange Olsen
- Section for Molecular Ecology and Evolution, Globe Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5-7, 1353 Copenhagen Kobenhavn, Denmark
- Natural History Museum of Denmark, University of Copenhagen, Denmark
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14
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Crossman CA, Fontaine MC, Frasier TR. A comparison of genomic diversity and demographic history of the North Atlantic and Southwest Atlantic southern right whales. Mol Ecol 2023. [PMID: 37577945 DOI: 10.1111/mec.17099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 07/25/2023] [Accepted: 07/31/2023] [Indexed: 08/15/2023]
Abstract
Right whales (genus Eubalaena) were among the first, and most extensively pursued, targets of commercial whaling. However, understanding the impacts of this persecution requires knowledge of the demographic histories of these species prior to exploitation. We used deep whole genome sequencing (~40×) of 12 North Atlantic (E. glacialis) and 10 Southwest Atlantic southern (E. australis) right whales to quantify contemporary levels of genetic diversity and infer their demographic histories over time. Using coalescent- and identity-by-descent-based modelling to estimate ancestral effective population sizes from genomic data, we demonstrate that North Atlantic right whales have lived with smaller effective population sizes (Ne ) than southern right whales in the Southwest Atlantic since their divergence and describe the decline in both populations around the time of whaling. North Atlantic right whales exhibit reduced genetic diversity and longer runs of homozygosity leading to higher inbreeding coefficients compared to the sampled population of southern right whales. This study represents the first comprehensive assessment of genome-wide diversity of right whales in the western Atlantic and underscores the benefits of high coverage, genome-wide datasets to help resolve long-standing questions about how historical changes in effective population size over different time scales shape contemporary diversity estimates. This knowledge is crucial to improve our understanding of the right whales' history and inform our approaches to address contemporary conservation issues. Understanding and quantifying the cumulative impact of long-term small Ne , low levels of diversity and recent inbreeding on North Atlantic right whale recovery will be important next steps.
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Affiliation(s)
- Carla A Crossman
- Biology Department, Saint Mary's University, Halifax, Nova Scotia, Canada
| | - Michael C Fontaine
- Laboratoire MIVEGEC (Université de Montpellier, CNRS 5290, IRD 224), Montpellier, France
- Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands
| | - Timothy R Frasier
- Biology Department, Saint Mary's University, Halifax, Nova Scotia, Canada
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15
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Bender AN, Krause DJ, Goebel ME, Hoffman JI, Lewallen EA, Bonin CA. Genetic diversity and demographic history of the leopard seal: A Southern Ocean top predator. PLoS One 2023; 18:e0284640. [PMID: 37566609 PMCID: PMC10420386 DOI: 10.1371/journal.pone.0284640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/14/2023] [Indexed: 08/13/2023] Open
Abstract
Leopard seals (Hydrurga leptonyx) are top predators that can exert substantial top-down control of their Antarctic prey species. However, population trends and genetic diversity of leopard seals remain understudied, limiting our understanding of their ecological role. We investigated the genetic diversity, effective population size and demographic history of leopard seals to provide fundamental data that contextualizes their predatory influence on Antarctic ecosystems. Ninety leopard seals were sampled from the northern Antarctic Peninsula during the austral summers of 2008-2019 and a 405bp segment of the mitochondrial control region was sequenced for each individual. We uncovered moderate levels of nucleotide (π = 0.013) and haplotype (Hd = 0.96) diversity, and the effective population size was estimated at around 24,000 individuals (NE = 24,376; 95% CI: 16,876-33,126). Consistent with findings from other ice-breeding pinnipeds, Bayesian skyline analysis also revealed evidence for population expansion during the last glacial maximum, suggesting that historical population growth may have been boosted by an increase in the abundance of sea ice. Although leopard seals can be found in warmer, sub-Antarctic locations, the species' core habitat is centered on the Antarctic, making it inherently vulnerable to the loss of sea ice habitat due to climate change. Therefore, detailed assessments of past and present leopard seal population trends are needed to inform policies for Antarctic ecosystems.
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Affiliation(s)
- Arona N. Bender
- Marine and Environmental Sciences Department, Hampton University, Hampton, VA, United States of America
| | - Douglas J. Krause
- Antarctic Ecosystem Research Division, Southwest Fisheries Science Center, NOAA Fisheries, La Jolla, CA, United States of America
| | - Michael E. Goebel
- Ecology and Evolutionary Biology Department, University of California, Santa Cruz, Santa Cruz, CA, United States of America
| | - Joseph I. Hoffman
- Department of Animal Behaviour, University of Bielefeld, Bielefeld, Germany
- British Antarctic Survey, Cambridge, United Kingdom
| | - Eric A. Lewallen
- Department of Biological Sciences, Hampton University, Hampton, VA, United States of America
| | - Carolina A. Bonin
- Marine and Environmental Sciences Department, Hampton University, Hampton, VA, United States of America
- Department of Biological Sciences, Hampton University, Hampton, VA, United States of America
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16
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Bondaryuk AN, Belykh OI, Andaev EI, Bukin YS. Inferring Evolutionary Timescale of Omsk Hemorrhagic Fever Virus. Viruses 2023; 15:1576. [PMID: 37515262 PMCID: PMC10385366 DOI: 10.3390/v15071576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/15/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Until 2020, there were only three original complete genome (CG) nucleotide sequences of Omsk hemorrhagic fever virus (OHFV) in GenBank. For this reason, the evolutionary rate and divergence time assessments reported in the literature were based on the E gene sequences, but notably without temporal signal evaluation, such that their reliability is unclear. As of July 2022, 47 OHFV CG sequences have been published, which enables testing of temporal signal in the data and inferring unbiased and reliable substitution rate and divergence time values. Regression analysis in the TempEst software demonstrated a stronger clocklike behavior in OHFV samples for the complete open reading frame (ORF) data set (R2 = 0.42) than for the E gene data set (R2 = 0.11). Bayesian evaluation of temporal signal indicated very strong evidence, with a log Bayes factor of more than 5, in favor of temporal signal in all data sets. Our results based on the complete ORF sequences showed a more precise OHFV substitution rate (95% highest posterior density (HPD) interval, 9.1 × 10-5-1.8 × 10-4 substitutions per site per year) and tree root height (416-896 years ago) compared with previous assessments. The rate obtained is significantly higher than tick-borne encephalitis virus by at least 3.8-fold. The phylogenetic analysis and past population dynamics reconstruction revealed the declining trend of OHFV genetic diversity, but there was phylogenomic evidence that implicit virus subpopulations evolved locally and underwent an exponential growth phase.
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Affiliation(s)
- Artem N Bondaryuk
- Laboratory of Natural Focal Viral Infections, Irkutsk Antiplague Research Institute of Siberia and the Far East, Irkutsk 664047, Russia
- Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia
| | - Olga I Belykh
- Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia
| | - Evgeny I Andaev
- Laboratory of Natural Focal Viral Infections, Irkutsk Antiplague Research Institute of Siberia and the Far East, Irkutsk 664047, Russia
| | - Yurij S Bukin
- Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia
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17
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Zhou Z, Yi H, Zhou Q, Wang L, Zhu Y, Wang W, Liu Z, Xiong H. Evolution and epidemic success of Mycobacterium tuberculosis in eastern China: evidence from a prospective study. BMC Genomics 2023; 24:241. [PMID: 37147590 PMCID: PMC10161668 DOI: 10.1186/s12864-023-09312-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 04/14/2023] [Indexed: 05/07/2023] Open
Abstract
BACKGROUND Lineage distribution of Mycobacterium tuberculosis (Mtb) isolates is strongly associated with geographically distinct human populations, and its transmission can be further impacted by the bacterial genome. However, the epidemic success of Mtb isolates at an individual level was unknown in eastern China. Knowledge regarding the emergence and transmission of Mtb isolates as well as relevant factors may offer a new solution to curb the spread of the disease. Thus, this study aims to reveal the evolution and epidemic success of Mtb isolates in eastern China. RESULTS Of initial 1040 isolates, 997 were retained after removing duplicates and those with insufficient sequencing depth. Of the final samples, 733 (73.52%) were from Zhejiang Province, and 264 (26.48%) were from Shanghai City. Lineage 2 and lineage 4 accounted for 80.44% and 19.56%, with common ancestors dating around 7017 years ago and 6882 years ago, respectively. Sub-lineage L2.2 (80.34%) contributed the majority of total isolates, followed by L4.4 (8.93%) and L4.5 (8.43%). Additionally, 51 (5.12%) isolates were identified to be multidrug-resistant (MDR), of which 21 (29.17%) were pre-extensively drug-resistant (pre-XDR). One clade harboring katG S315T mutation may date back to 65 years ago and subsequently acquired mutations conferring resistance to another five antibiotic drugs. The prevalence of compensatory mutation was the highest in pre-XDR isolates (76.19%), followed by MDR isolates (47.06%) and other drug-resistant isolates (20.60%). Time-scaled haplotypic density analyses suggested comparable success indices between lineage 2 and lineage 4 (P = 0.306), and drug resistance did not significantly promote the transmission of Mtb isolates (P = 0.340). But for pre-XDR isolates, we found a higher success index in those with compensatory mutations (P = 0.025). Mutations under positive selection were found in genes associated with resistance to second-line injectables (whiB6) and drug tolerance (prpR) in both lineage 2 and lineage 4. CONCLUSIONS Our study demonstrates the population expansion of lineage 2 and lineage 4 in eastern China, with comparable transmission capacity, while accumulation of resistance mutations does not necessarily facilitate the success of Mtb isolates. Compensatory mutations usually accompany drug resistance and significantly contribute to the epidemiological transmission of pre-XDR strains. Prospective molecular surveillance is required to further monitor the emergence and spread of pre-XDR/XDR strains in eastern China.
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Affiliation(s)
- Zonglei Zhou
- School of Public Health, Fudan University, Shanghai, 200032, China
| | - Huaiming Yi
- Center for Disease Control and Prevention of Changshan County, 324200, Zhejiang, China
| | - Qingrong Zhou
- Center for Disease Control and Prevention of Jiangshan City, 324100, Zhejiang, China
| | - Luqi Wang
- School of Public Health, Fudan University, Shanghai, 200032, China
| | - Yue Zhu
- School of Public Health, Fudan University, Shanghai, 200032, China
| | - Weibing Wang
- School of Public Health, Fudan University, Shanghai, 200032, China.
- Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, 200032, China.
| | - Zhengwe Liu
- Institute of Tuberculosis Control, Zhejiang Provincial Center for Disease Control and Prevention, 310051, Zhejiang, China.
| | - Haiyan Xiong
- School of Public Health, Fudan University, Shanghai, 200032, China
- Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, 200032, China
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18
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Bondaryuk AN, Kulakova NV, Belykh OI, Bukin YS. Dates and Rates of Tick-Borne Encephalitis Virus-The Slowest Changing Tick-Borne Flavivirus. Int J Mol Sci 2023; 24:ijms24032921. [PMID: 36769238 PMCID: PMC9917962 DOI: 10.3390/ijms24032921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
We evaluated the temporal signal and substitution rate of tick-borne encephalitis virus (TBEV) using 276 complete open reading frame (ORF) sequences with known collection dates. According to a permutation test, the TBEV Siberian subtype (TBEV-S) data set has no temporal structure and cannot be applied for substitution rate estimation without other TBEV subtypes. The substitution rate obtained suggests that the common clade of TBEV (TBEV-common), including all TBEV subtypes and louping-ill virus (LIV), is characterized by the lowest rate (1.87 × 10-5 substitutions per site per year (s/s/y) or 1 nucleotide substitution per ORF per 4.9 years; 95% highest posterior density (HPD) interval, 1.3-2.4 × 10-5 s/s/y) among all tick-borne flaviviruses previously assessed. Within TBEV-common, the TBEV European subtype (TBEV-E) has the lowest substitution rate (1.3 × 10-5 s/s/y or 1 nucleotide substitution per ORF per 7.5 years; 95% HPD, 1.0-1.8 × 10-5 s/s/y) as compared with TBEV Far-Eastern subtype (3.0 × 10-5 s/s/y or 1 nucleotide substitution per ORF per 3.2 years; 95% HPD, 1.6-4.5 × 10-5 s/s/y). TBEV-common representing the species tick-borne encephalitis virus diverged 9623 years ago (95% HPD interval, 6373-13,208 years). The TBEV Baikalian subtype is the youngest one (489 years; 95% HPD, 291-697 years) which differs significantly by age from TBEV-E (848 years; 95% HPD, 596-1112 years), LIV (2424 years; 95% HPD, 1572-3400 years), TBEV-FE (1936 years, 95% HPD, 1344-2598 years), and the joint clade of TBEV-S (2505 years, 95% HPD, 1700-3421 years) comprising Vasilchenko, Zausaev, and Baltic lineages.
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Affiliation(s)
- Artem N. Bondaryuk
- Laboratory of Natural Focal Viral Infections, Irkutsk Antiplague Research Institute of Siberia and the Far East, 664047 Irkutsk, Russia
- Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia
| | - Nina V. Kulakova
- Department of Biodiversity and Biological Resources, Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia
| | - Olga I. Belykh
- Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia
- Correspondence:
| | - Yurij S. Bukin
- Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia
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19
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Kimmitt AA, Pegan TM, Jones AW, Wacker KS, Brennan CL, Hudon J, Kirchman JJ, Ruegg K, Benz BW, Herman R, Winger BM. Genetic evidence for widespread population size expansion in North American boreal birds prior to the Last Glacial Maximum. Proc Biol Sci 2023; 290:20221334. [PMID: 36695033 PMCID: PMC9874272 DOI: 10.1098/rspb.2022.1334] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 12/19/2022] [Indexed: 01/26/2023] Open
Abstract
Pleistocene climate cycles are well documented to have shaped contemporary species distributions and genetic diversity. Northward range expansions in response to deglaciation following the Last Glacial Maximum (LGM; approximately 21 000 years ago) are surmised to have led to population size expansions in terrestrial taxa and changes in seasonal migratory behaviour. Recent findings, however, suggest that some northern temperate populations may have been more stable than expected through the LGM. We modelled the demographic history of 19 co-distributed boreal-breeding North American bird species from full mitochondrial gene sets and species-specific molecular rates. We used these demographic reconstructions to test how species with different migratory strategies were affected by glacial cycles. Our results suggest that effective population sizes increased in response to Pleistocene deglaciation earlier than the LGM, whereas genetic diversity was maintained throughout the LGM despite shifts in geographical range. We conclude that glacial cycles prior to the LGM have most strongly shaped contemporary genetic diversity in these species. We did not find a relationship between historic population dynamics and migratory strategy, contributing to growing evidence that major switches in migratory strategy during the LGM are unnecessary to explain contemporary migratory patterns.
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Affiliation(s)
- Abigail A. Kimmitt
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Teresa M. Pegan
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Andrew W. Jones
- Department of Ornithology, Cleveland Museum of Natural History, Cleveland, OH 44106, USA
| | - Kristen S. Wacker
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Courtney L. Brennan
- Department of Ornithology, Cleveland Museum of Natural History, Cleveland, OH 44106, USA
| | - Jocelyn Hudon
- Royal Alberta Museum, Edmonton, Alberta Canada, T5J 0G2
| | | | - Kristen Ruegg
- Biology Department, Colorado State University, Fort Collins, CO 80521, USA
| | - Brett W. Benz
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Rachael Herman
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794, USA
| | - Benjamin M. Winger
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, Ann Arbor, MI 48109, USA
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20
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Heino MT, Nyman T, Palo JU, Harmoinen J, Valtonen M, Pilot M, Översti S, Salmela E, Kunnasranta M, Väinölä R, Hoelzel AR, Aspi J. Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections. Ecol Evol 2023; 13:e9720. [PMID: 36699566 PMCID: PMC9849707 DOI: 10.1002/ece3.9720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 12/14/2022] [Accepted: 12/19/2022] [Indexed: 01/20/2023] Open
Abstract
The Saimaa ringed seal (Pusa hispida saimensis) is endemic to Lake Saimaa in Finland. The subspecies is thought to have originated when parts of the ringed seal population of the Baltic region were trapped in lakes emerging due to postglacial bedrock rebound around 9000 years ago. During the 20th century, the population experienced a drastic human-induced bottleneck. Today encompassing a little over 400 seals with extremely low genetic diversity, it is classified as endangered. We sequenced sections of the mitochondrial control region from 60 up to 125-years-old museum specimens of the Saimaa ringed seal. The generated dataset was combined with publicly available sequences. We studied how genetic variation has changed through time in this subspecies and how it is phylogenetically related to other ringed seal populations from the Baltic Sea, Lake Ladoga, North America, Svalbard, and the White Sea. We observed temporal fluctuations in haplotype frequencies and loss of haplotypes accompanied by a recent reduction in female effective population size. In apparent contrast with the traditionally held view of the Baltic origin of the population, the Saimaa ringed seal mtDNA variation also shows affinities to North American ringed seals. Our results suggest that the Saimaa ringed seal has experienced recent genetic drift associated with small population size. The results further suggest that extant Baltic ringed seal is not representative of the ancestral population of the Saimaa ringed seal, which calls for re-evaluation of the deep history of this subspecies.
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Affiliation(s)
- Matti T. Heino
- Ecology and Genetics Research UnitUniversity of OuluOuluFinland,Department of Forensic MedicineUniversity of HelsinkiHelsinkiFinland
| | - Tommi Nyman
- Department of Ecosystems in the Barents Region, Svanhovd Research StationNorwegian Institute of Bioeconomy ResearchSvanvikNorway
| | - Jukka U. Palo
- Department of Forensic MedicineUniversity of HelsinkiHelsinkiFinland,Forensic Chemistry Unit/Forensic GeneticsFinnish Institute for Health and WelfareHelsinkiFinland
| | - Jenni Harmoinen
- Ecology and Genetics Research UnitUniversity of OuluOuluFinland,Wildlife Ecology GroupNatural Resources Institute FinlandHelsinkiFinland
| | - Mia Valtonen
- Wildlife Ecology GroupNatural Resources Institute FinlandHelsinkiFinland,Department of Environmental and Biological SciencesUniversity of Eastern FinlandJoensuuFinland,Institute of BiotechnologyUniversity of HelsinkiHelsinkiFinland
| | - Małgorzata Pilot
- School of Biological and Biomedical SciencesDurham UniversityDurhamUK,Museum and Institute of ZoologyPolish Academy of SciencesGdańskPoland,Faculty of BiologyUniversity of GdańskGdańskPoland
| | - Sanni Översti
- Transmission, Infection, Diversification and Evolution GroupMax‐Planck Institute for the Science of Human HistoryJenaGermany,Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental SciencesUniversity of HelsinkiHelsinkiFinland
| | - Elina Salmela
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental SciencesUniversity of HelsinkiHelsinkiFinland,Department of Biology, Faculty of ScienceUniversity of TurkuTurkuFinland
| | - Mervi Kunnasranta
- University of Eastern FinlandJoensuuFinland,Natural Resources Institute FinlandJoensuuFinland
| | - Risto Väinölä
- Finnish Museum of Natural HistoryUniversity of HelsinkiHelsinkiFinland
| | | | - Jouni Aspi
- Ecology and Genetics Research UnitUniversity of OuluOuluFinland
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21
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Lesturgie P, Braun CD, Clua E, Mourier J, Thorrold SR, Vignaud T, Planes S, Mona S. Like a rolling stone: Colonization and migration dynamics of the gray reef shark ( Carcharhinus amblyrhynchos). Ecol Evol 2023; 13:e9746. [PMID: 36644707 PMCID: PMC9831972 DOI: 10.1002/ece3.9746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/18/2022] [Accepted: 12/27/2022] [Indexed: 01/13/2023] Open
Abstract
Designing appropriate management plans requires knowledge of both the dispersal ability and what has shaped the current distribution of the species under consideration. Here, we investigated the evolutionary history of the endangered gray reef shark (Carcharhinus amblyrhynchos) across its range by sequencing thousands of RADseq loci in 173 individuals in the Indo-Pacific (IP). We first bring evidence of the occurrence of a range expansion (RE) originating close to the Indo-Australian Archipelago (IAA) where two stepping-stone waves (east and westward) colonized almost the entire IP. Coalescent modeling additionally highlighted a homogenous connectivity (Nm ~ 10 per generation) throughout the range, and isolation by distance model suggested the absence of barriers to dispersal despite the affinity of C. amblyrhynchos to coral reefs. This coincides with long-distance swims previously recorded, suggesting that the strong genetic structure at the IP scale (F ST ~ 0.56 between its ends) is the consequence of its broad current distribution and organization in a large number of demes. Our results strongly suggest that management plans for the gray reef shark should be designed on a range-wide rather than a local scale due to its continuous genetic structure. We further contrasted these results with those obtained previously for the sympatric but strictly lagoon-associated Carcharhinus melanopterus, known for its restricted dispersal ability. Carcharhinus melanopterus exhibits a similar RE dynamic but is characterized by a stronger genetic structure and a nonhomogeneous connectivity largely dependent on local coral reefs availability. This sheds new light on shark evolution, emphasizing the roles of IAA as source of biodiversity and of life-history traits in shaping the extent of genetic structure and diversity.
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Affiliation(s)
- Pierre Lesturgie
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, EPHE‐PSLUniversité PSL, CNRS, SU, UAParisFrance
| | - Camrin D. Braun
- Biology DepartmentWoods Hole Oceanographic InstitutionWoods HoleMassachusettsUSA
| | - Eric Clua
- Laboratoire d'Excellence CORAILPapetoaiFrench Polynesia
- EPHE, PSL Research UniversityParisFrance
| | - Johann Mourier
- Laboratoire d'Excellence CORAILPapetoaiFrench Polynesia
- Université de Corse Pasquale Paoli, UMS 3514 Plateforme Marine Stella MareBigugliaFrance
| | - Simon R. Thorrold
- Biology DepartmentWoods Hole Oceanographic InstitutionWoods HoleMassachusettsUSA
| | | | - Serge Planes
- Laboratoire d'Excellence CORAILPapetoaiFrench Polynesia
- EPHE, PSL Research UniversityParisFrance
| | - Stefano Mona
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, EPHE‐PSLUniversité PSL, CNRS, SU, UAParisFrance
- EPHE, PSL Research UniversityParisFrance
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22
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Genetic Diversity and Maternal Lineage of Indo-Pacific Bottlenose Dolphin (Tursiops aduncus) in the Andaman Sea of Thailand. DIVERSITY 2022. [DOI: 10.3390/d14121093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Indo-Pacific bottlenose dolphins (Tursiops aduncus) are a coastal species found in Thai waters off the coasts of the Andaman Sea and the Gulf of Thailand. This species was recently re-listed as near-threatened by the IUCN Red List, though the population status in Thai seas is not known. Here, we investigated genetic diversity, population structure, maternal lineage, and demographics by analyzing skin tissue samples (n = 30) of T. aduncus stranded along the Andaman coastline of Thailand between 1990 and 2019. This study was based on 11 microsatellite loci and 265 bp mtDNA control regions compared to data available through the National Center for Biotechnology Information (NCBI). From microsatellites, the observed heterozygosity (Ho) ranged from 0.46 to 0.85. The mean fixation index (F) value for all loci was 0.10 ± 0.04, which suggests some degree of inbreeding. Two genetic clusters (the most likely K at K = 2) were observed in T. aduncus through the population structure analysis using multiple criteria. For the mtDNA control region, a total of 17 haplotypes were found for dolphins in Thai seas (14 haplotypes from our samples; three haplotypes from the NCBI database) with high levels of haplotype diversity (h) at 0.926 ± 0.027 and nucleotide diversity (π) at 0.045 ± 0.002. A decline in the effective population size from 0.05 million years ago also was observed in Thai T. aduncus through Bayesian Skyline Plots analysis. A unique set of haplotypes was identified in our samples, which may have originated from the Australian and Indian Oceans rather than the Western Pacific Ocean. These results improve our understanding of the maternal lineage of the Indo-Pacific bottlenose dolphin, which can be used for monitoring population status and establishing better conservation plans for this species in the Thai Andaman Sea.
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23
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Lord E, Marangoni A, Baca M, Popović D, Goropashnaya AV, Stewart JR, Knul MV, Noiret P, Germonpré M, Jimenez EL, Abramson NI, Vartanyan S, Prost S, Smirnov NG, Kuzmina EA, Olsen RA, Fedorov VB, Dalén L. Population dynamics and demographic history of Eurasian collared lemmings. BMC Ecol Evol 2022; 22:126. [PMID: 36329382 PMCID: PMC9632076 DOI: 10.1186/s12862-022-02081-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/19/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Ancient DNA studies suggest that Late Pleistocene climatic changes had a significant effect on population dynamics in Arctic species. The Eurasian collared lemming (Dicrostonyx torquatus) is a keystone species in the Arctic ecosystem. Earlier studies have indicated that past climatic fluctuations were important drivers of past population dynamics in this species. RESULTS Here, we analysed 59 ancient and 54 modern mitogenomes from across Eurasia, along with one modern nuclear genome. Our results suggest population growth and genetic diversification during the early Late Pleistocene, implying that collared lemmings may have experienced a genetic bottleneck during the warm Eemian interglacial. Furthermore, we find multiple temporally structured mitogenome clades during the Late Pleistocene, consistent with earlier results suggesting a dynamic late glacial population history. Finally, we identify a population in northeastern Siberia that maintained genetic diversity and a constant population size at the end of the Pleistocene, suggesting suitable conditions for collared lemmings in this region during the increasing temperatures associated with the onset of the Holocene. CONCLUSIONS This study highlights an influence of past warming, in particular the Eemian interglacial, on the evolutionary history of the collared lemming, along with spatiotemporal population structuring throughout the Late Pleistocene.
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Affiliation(s)
- Edana Lord
- Centre for Palaeogenetics, Svante Arrhenius Väg 20C, 10691, Stockholm, Sweden. .,Department of Zoology, Stockholm University, 10691, Stockholm, Sweden. .,Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Box 50007, 10405, Stockholm, Sweden.
| | - Aurelio Marangoni
- Centre for Palaeogenetics, Svante Arrhenius Väg 20C, 10691, Stockholm, Sweden.,Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Box 50007, 10405, Stockholm, Sweden
| | - Mateusz Baca
- Centre of New Technologies, University of Warsaw, S. Banacha 2C, 02-097, Warsaw, Poland
| | - Danijela Popović
- Centre of New Technologies, University of Warsaw, S. Banacha 2C, 02-097, Warsaw, Poland
| | - Anna V Goropashnaya
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, 99775-7000, USA
| | - John R Stewart
- Faculty of Science and Technology, Bournemouth University, Talbot Campus, Fern Barrow, Poole, BH12 5BB, Dorset, UK
| | - Monika V Knul
- Department of Archaeology, Anthropology and Geography, University of Winchester, Winchester, SO22 4NR, UK
| | - Pierre Noiret
- Service de Préhistoire, Université de Liège, Place du 20 Août 7, 4000, Liège, Belgium
| | - Mietje Germonpré
- OD Earth and History of Life, Royal Belgian Institute of Natural Sciences, Vautierstraat 29, Brussels, Belgium
| | - Elodie-Laure Jimenez
- OD Earth and History of Life, Royal Belgian Institute of Natural Sciences, Vautierstraat 29, Brussels, Belgium.,School of Geosciences, University of Aberdeen, Aberdeen, Scotland
| | - Natalia I Abramson
- Department of Molecular Systematics, Zoological Institute RAS, St Petersburg, Russia
| | - Sergey Vartanyan
- Far East Branch, N.A. Shilo North-East Interdisciplinary Scientific Research Institute Russian Academy of Sciences (NEISRI FEB RAS), 685000, Magadan, Russia
| | - Stefan Prost
- Central Research Laboratories, Natural History Museum Vienna, 1010, Vienna, Austria.,Department of Cognitive Biology, University of Vienna, 1090, Vienna, Austria.,Konrad Lorenz Institute of Ethology, 1160, Vienna, Austria.,South African National Biodiversity Institute, National Zoological Garden, Pretoria, South Africa
| | - Nickolay G Smirnov
- Institute of Plant and Animal Ecology UB RAS, Russian Academy of Sciences, 202 8 Marta Street, 620144, Ekaterinburg, Russia
| | - Elena A Kuzmina
- Institute of Plant and Animal Ecology UB RAS, Russian Academy of Sciences, 202 8 Marta Street, 620144, Ekaterinburg, Russia
| | - Remi-André Olsen
- Science for Life Laboratory (SciLifeLab), Dept of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Vadim B Fedorov
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, 99775-7000, USA
| | - Love Dalén
- Centre for Palaeogenetics, Svante Arrhenius Väg 20C, 10691, Stockholm, Sweden. .,Department of Zoology, Stockholm University, 10691, Stockholm, Sweden. .,Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Box 50007, 10405, Stockholm, Sweden.
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24
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Wei S, Sun S, Dou H, An F, Gao H, Guo C, Hua Y. Influence of Pleistocene climate fluctuations on the demographic history and distribution of the critically endangered Chinese pangolin (Manis pentadactyla). BMC ZOOL 2022; 7:50. [PMID: 37170389 PMCID: PMC10127079 DOI: 10.1186/s40850-022-00153-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 08/24/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Pleistocene climate fluctuations have strongly modified species genetic diversity and distributions. The Chinese pangolin (Manis pentadactyla) has been recognized as a critically endangered animal due to heavy poaching and trafficking. However, the effect of Pleistocene climate fluctuations on the genetic diversity and spatial distribution of the Chinese pangolin remains largely unknown. Here, we combined whole genome sequencing data, analysis of complete mitochondrial genomes, and a large amount of occurrence data from field surveys to infer the ancestral demographic history and predict the past spatial dynamics of the Chinese pangolin in Guangdong Province, China.
Results
Our results indicated that there were two subpopulations, which showed similar trends of population size change in response to past climatic changes. We estimated a peak effective population size (Ne) during the last interglacial (LIG), followed by a marked decrease (~ 0.5 to fivefold change) until the last glacial maximum (LGM) and a rebound to a small peak population size during the Mid-Holocene (MH). The estimated time of the separation event between two subpopulations was approximately 3,000–2,500 years ago (ka). We estimated that the distribution of suitable areas shrank by 14.4% from the LIG to LGM, followed by an expansion of 31.4% from the LGM to MH and has been stable since then. In addition, we identified an elevational shift and suitable area decreased significantly during the LGM, but that the geographic extent of suitable areas in the western region increased from the LIG to present. The eastern region of Guangdong Province had the highest habitat suitability across all the climate scenarios.
Conclusions
Our results suggested that Pleistocene climate fluctuations played an important role in shaping patterns of genetic diversity and spatial distribution, and that human stressors likely contributed to the recent divergence of two Chinese pangolin subpopulations sampled here. We argue that a key protected area should be established in the eastern region of Guangdong Province. As such, this study provides a more thorough understanding of the impacts of Pleistocene climate fluctuations impacts on a mammalian species in southern China and suggests more robust management and conservation plans for this Critically Endangered species of special interest.
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25
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Unveiling new perspective of phylogeography, genetic diversity, and population dynamics of Southeast Asian and Pacific chickens. Sci Rep 2022; 12:14609. [PMID: 36028749 PMCID: PMC9418149 DOI: 10.1038/s41598-022-18904-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 08/22/2022] [Indexed: 11/10/2022] Open
Abstract
The complex geographic and temporal origins of chicken domestication have attracted wide interest in molecular phylogeny and phylogeographic studies as they continue to be debated up to this day. In particular, the population dynamics and lineage-specific divergence time estimates of chickens in Southeast Asia (SEA) and the Pacific region are not well studied. Here, we analyzed 519 complete mitochondrial DNA control region sequences and identified 133 haplotypes with 70 variable sites. We documented 82.7% geographically unique haplotypes distributed across major haplogroups except for haplogroup C, suggesting high polymorphism among studied individuals. Mainland SEA (MSEA) chickens have higher overall genetic diversity than island SEA (ISEA) chickens. Phylogenetic trees and median-joining network revealed evidence of a new divergent matrilineage (i.e., haplogroup V) as a sister-clade of haplogroup C. The maximum clade credibility tree estimated the earlier coalescence age of ancestral D-lineage (i.e., sub-haplogroup D2) of continental chickens (3.7 kya; 95% HPD 1985–4835 years) while island populations diverged later at 2.1 kya (95% HPD 1467–2815 years). This evidence of earlier coalescence age of haplogroup D ancestral matriline exemplified dispersal patterns to the ISEA, and thereafter the island clade diversified as a distinct group.
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26
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MN M, KP S, Indrabalan UB, P K, Jacob SS, Subramaniam S, patil SS, SK K, Goroshi S. An extensive analysis of Codon usage pattern, Evolutionary rate, and Phylogeographic reconstruction in Foot and mouth disease (FMD) serotypes (A, Asia 1, and O) of six major climatic zones of India: A Comparative study. Acta Trop 2022; 236:106674. [DOI: 10.1016/j.actatropica.2022.106674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 08/27/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022]
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27
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Kang B, Hsu KC, Wu JH, Chiu YW, Lin HD, Ju YM. Population genetic diversity and structure of Rhinogobius candidianus (Gobiidae) in Taiwan: Translocation and release. Ecol Evol 2022; 12:e9154. [PMID: 35979520 PMCID: PMC9366559 DOI: 10.1002/ece3.9154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 06/17/2022] [Accepted: 07/08/2022] [Indexed: 11/12/2022] Open
Abstract
Rhinogobius candidianus is a freshwater goby distributed in north, northwest, west, and south Taiwan, but this species has been introduced to east Taiwan and became dominant. To investigate its native population genetic diversity and structure and evaluate the sources and diversity of translocated populations, the mitochondrial DNA control region and cytochrome b gene (1981 bp) from 220 specimens were analyzed. These results indicated that (1) the east populations originated from two sources in west Taiwan; (2) translocated populations exist in east Taiwan and south Taiwan; (3) many populations have likely been moved secondarily by human intervention; (4) the effective size of the populations had declined greatly; (5) within the native populations, the ancestral populations colonized Taiwan during the land bridge phase in the Pleistocene through north Taiwan; (6) the landform changes in Taiwan shaped the population structure; and (7) the landforms of the coastline during glaciation also shaped the native range. The low-level genetic diversity, high population differentiation, and population decline greatly suggest the need for resource management and conservation interventions. Four clades (α-δ) should be managed as four distinct evolutionarily significant units, while the translocated populations should be managed as separate management units. Moreover, the translocated populations in east Taiwan should be evaluated and monitored carefully.
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Affiliation(s)
- Bin Kang
- The Key Laboratory of Mariculture (Ocean University of China) Ministry of Education Qingdao China
| | - Kui-Ching Hsu
- College of Fisheries Guangdong Ocean University Zhanjiang China
| | - Jui-Hsien Wu
- Eastern Marine Biology Research Center of Fisheries Research Institute Council of Agriculture Taitung Taiwan
| | - Yuh-Wen Chiu
- Department of Biological Resources National Chiayi University Chiayi Taiwan
| | - Hung-Du Lin
- The Affiliated School of National Tainan First Senior High School Tainan Taiwan
| | - Yu-Min Ju
- National Museum of Marine Biology and Aquarium Pingtung Taiwan.,Department of Marine Biotechnology and Resources National Sun Yat-sen University Kaohsiung Taiwan
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28
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Demographic Expansions and the Emergence of Host Specialization in Genetically Distinct Ecotypes of the Tick-Transmitted Bacterium Anaplasma phagocytophilum. Appl Environ Microbiol 2022; 88:e0061722. [PMID: 35867580 PMCID: PMC9317897 DOI: 10.1128/aem.00617-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
In Europe, genetically distinct ecotypes of the tick-vectored bacterium Anaplasma phagocytophilum circulate among mammals in three discrete enzootic cycles. To date, potential ecological factors that contributed to the emergence of these divergent ecotypes have been poorly studied. Here, we show that the ecotype that predominantly infects roe deer (Capreolus capreolus) is evolutionarily derived. Its divergence from a host generalist ancestor occurred after the last glacial maximum as mammal populations, including roe deer, recolonized the European mainland from southern refugia. We also provide evidence that this host specialist ecotype's effective population size (Ne) has tracked changes in the population of its roe deer host. Specifically, both host and bacterium have undergone substantial increases in Ne over the past 1,500 years. In contrast, we show that while it appears to have undergone a major population expansion starting ~3,500 years ago, in the past 500 years, the contemporary host generalist ecotype has experienced a substantial reduction in genetic diversity levels, possibly as a result of reduced opportunities for transmission between competent hosts. IMPORTANCE The findings of this study reveal specific events important for the evolution of host specialization in a naturally occurring, obligately intracellular bacterial pathogen. Specifically, they show that host range shifts and the emergence of host specialization may occur during periods of population growth in a generalist ancestor. Our results also demonstrate the close correlation between demographic patterns in host and pathogen for a specialist system. These findings have important relevance for understanding the evolution of host range diversity. They may inform future work on host range dynamics, and they provide insights for understanding the emergence of pathogens that have human and veterinary health implications.
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29
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Fonseca EM, Duckett DJ, Almeida FG, Smith ML, Thomé MTC, Carstens BC. Assessing model adequacy for Bayesian Skyline plots using posterior predictive simulation. PLoS One 2022; 17:e0269438. [PMID: 35877611 PMCID: PMC9312427 DOI: 10.1371/journal.pone.0269438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 05/23/2022] [Indexed: 11/30/2022] Open
Abstract
Bayesian skyline plots (BSPs) are a useful tool for making inferences about demographic history. For example, researchers typically apply BSPs to test hypotheses regarding how climate changes have influenced intraspecific genetic diversity over time. Like any method, BSP has assumptions that may be violated in some empirical systems (e.g., the absence of population genetic structure), and the naïve analysis of data collected from these systems may lead to spurious results. To address these issues, we introduce P2C2M.Skyline, an R package designed to assess model adequacy for BSPs using posterior predictive simulation. P2C2M.Skyline uses a phylogenetic tree and the log file output from Bayesian Skyline analyses to simulate posterior predictive datasets and then compares this null distribution to statistics calculated from the empirical data to check for model violations. P2C2M.Skyline was able to correctly identify model violations when simulated datasets were generated assuming genetic structure, which is a clear violation of BSP model assumptions. Conversely, P2C2M.Skyline showed low rates of false positives when models were simulated under the BSP model. We also evaluate the P2C2M.Skyline performance in empirical systems, where we detected model violations when DNA sequences from multiple populations were lumped together. P2C2M.Skyline represents a user-friendly and computationally efficient resource for researchers aiming to make inferences from BSP.
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Affiliation(s)
- Emanuel M. Fonseca
- Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH, United States of America
- Museum of Biological Diversity, The Ohio State University, Columbus, OH, United States of America
| | - Drew J. Duckett
- Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH, United States of America
- Museum of Biological Diversity, The Ohio State University, Columbus, OH, United States of America
| | - Filipe G. Almeida
- Department of Zoology, Federal University at Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Megan L. Smith
- Department of Biology and Department of Computer Science, Indiana University, Bloomington, IN, United States of America
| | - Maria Tereza C. Thomé
- Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH, United States of America
- Museum of Biological Diversity, The Ohio State University, Columbus, OH, United States of America
| | - Bryan C. Carstens
- Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH, United States of America
- Museum of Biological Diversity, The Ohio State University, Columbus, OH, United States of America
- * E-mail:
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30
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Sil M, Mahveen J, Roy A, Karanth KP, Aravind NA. Insight into the evolutionary history of Indoplanorbis exustus (Bulinidae: Gastropoda) at the scale of population and species. Biol J Linn Soc Lond 2022. [DOI: 10.1093/biolinnean/blac062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
The history of a lineage is intertwined with the history of the landscape it inhabits. Here we showcase how the geo-tectonic and climatic evolution of South Asia and surrounding landmasses have shaped the biogeographical history of Indoplanorbis exustus, a tropical Asian, freshwater snail. We amplified partial COI gene fragments from all over India and combined this with a larger dataset from South and Southeast Asia to carry out phylogenetic reconstruction, species delimitation analysis and population genetic analyses. Two nuclear genes were also amplified from a few individuals per putative species to carry out divergence dating and ancestral area reconstruction analyses. The results suggest that I. exustus dispersed out of Africa into India during the Eocene. Furthermore, molecular data suggest I. exustus is a species complex consisting of multiple putative species. Primary diversification took place in the Northern Indian plains or in Northeast India. The speciation events appear to be primarily allopatric caused by a series of aridification events starting from the late Miocene to early Pleistocene. None of the species appears to have any underlying genetic structure suggestive of high vagility. All the species underwent population fluctuations during the Pleistocene, probably driven by the Quaternary climatic fluctuations.
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Affiliation(s)
- Maitreya Sil
- SMS Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment , Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064 , India
| | - Juveriya Mahveen
- SMS Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment , Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064 , India
- Department of Microbiology, St. Joseph’s College , Bangalore 560027 , India
| | - Abhishikta Roy
- SMS Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment , Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064 , India
| | - K Praveen Karanth
- Centre for Ecological Sciences, Indian Institute of Science , Bangalore 560012 , India
| | - N A Aravind
- SMS Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment , Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064 , India
- Yenepoya Research Centre, Yenepoya (deemed to be University) , University Road, Derlakatte, Mangalore 575018 , India
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Wang J, Hsu KC, Chen YH, Zhao J, Tang WQ, Liu D, Yang JQ, Lin HD. Phylogeography of Tridentiger bifasciatus (Gobiidae) in the Northwestern Pacific. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.935251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The shimofuri goby (Tridentiger bifasciatus) is native to marine, brackish, and fresh waters along the coasts of the northwest Pacific. Our study examined the population genetic structure, diversity, and demography of T. bifasciatus in the China Seas, including the Yellow Sea, East China Sea, and South China Sea, using the sequences of mitochondrial DNA [mtDNA cytochrome b (cyt b) gene and d-loop region] and nuclear DNA [nuDNA ryanodine receptor 3 (Ryr3) gene]. The mtDNA dataset revealed a significant population differentiation, but the nuDNA dataset displayed the absence of genetic differentiation. The discordance between these two datasets was accounted for by population admixture, selection, and incomplete lineage sorting. Although the mtDNA and nuDNA displayed a discordant population structure, these genetic markers revealed the same population history: (1) the populations retreated into two refugia during glaciations and (2) the populations declined recently. Our study revealed that after glaciations, the re-flooding in Taiwan Strait did not shape the migrations of the southern lineage from the South China Sea to the East China Sea, and displayed that two mtDNA lineages have diverged before they migrated southward during glaciations. These results offer important resources for the further study of conservation genetics.
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Robin M, Ferrari G, Akgül G, Münger X, von Seth J, Schuenemann VJ, Dalén L, Grossen C. Ancient mitochondrial and modern whole genomes unravel massive genetic diversity loss during near extinction of Alpine ibex. Mol Ecol 2022; 31:3548-3565. [PMID: 35560856 PMCID: PMC9328357 DOI: 10.1111/mec.16503] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 04/13/2022] [Accepted: 05/04/2022] [Indexed: 11/27/2022]
Abstract
Population bottlenecks can have dramatic consequences for the health and long-term survival of a species. Understanding of historic population size and standing genetic variation prior to a contraction allows estimating the impact of a bottleneck on the species genetic diversity. Although historic population sizes can be modelled based on extant genomics, uncertainty is high for the last 10-20 millenia. Hence, integrating ancient genomes provides a powerful complement to retrace the evolution of genetic diversity through population fluctuations. Here, we recover 15 high-quality mitogenomes of the once nearly extinct Alpine ibex spanning 8601 BP to 1919 CE and combine these with 60 published modern whole genomes. Coalescent demography simulations based on modern whole genomes indicate population fluctuations coinciding with the last major glaciation period. Using our ancient and historic mitogenomes, we investigate the more recent demographic history of the species and show that mitochondrial haplotype diversity was reduced to a fifth of the pre-bottleneck diversity with several highly differentiated mitochondrial lineages having co-existed historically. The main collapse of mitochondrial diversity coincides with elevated human population growth during the last 1-2 kya. After recovery, one lineage was spread and nearly fixed across the Alps due to recolonization efforts. Our study highlights that a combined approach integrating genomic data of ancient, historic and extant populations unravels major long-term population fluctuations from the emergence of a species through its near extinction up to the recent past.
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Affiliation(s)
- Mathieu Robin
- Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland.,Institute of Evolutionary Medicine, University of Zurich, Zürich, Switzerland
| | - Giada Ferrari
- Institute of Evolutionary Medicine, University of Zurich, Zürich, Switzerland
| | - Gülfirde Akgül
- Institute of Evolutionary Medicine, University of Zurich, Zürich, Switzerland
| | - Xenia Münger
- Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Johanna von Seth
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Stockholm, Sweden.,Centre for Palaeogenetics, Stockholm, Sweden
| | | | - Love Dalén
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Stockholm, Sweden.,Centre for Palaeogenetics, Stockholm, Sweden
| | - Christine Grossen
- Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
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33
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Genetic diversity and population structure of the northern red muntjac (Muntiacus vaginalis) in Indian Himalayan region. Mamm Biol 2022. [DOI: 10.1007/s42991-022-00254-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Cabrera AA, Schall E, Bérubé M, Anderwald P, Bachmann L, Berrow S, Best PB, Clapham PJ, Cunha H, Dalla Rosa L, Dias C, Findlay K, Haug T, Heide‐Jørgensen MP, Hoelzel A, Kovacs KM, Landry S, Larsen F, Lopes XM, Lydersen C, Mattila DK, Oosting T, Pace RM, Papetti C, Paspati A, Pastene LA, Prieto R, Ramp C, Robbins J, Sears R, Secchi ER, Silva MA, Simon M, Víkingsson G, Wiig Ø, Øien N, Palsbøll PJ. Strong and lasting impacts of past global warming on baleen whales and their prey. GLOBAL CHANGE BIOLOGY 2022; 28:2657-2677. [PMID: 35106859 PMCID: PMC9305191 DOI: 10.1111/gcb.16085] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 11/01/2021] [Accepted: 11/03/2021] [Indexed: 05/14/2023]
Abstract
Global warming is affecting the population dynamics and trophic interactions across a wide range of ecosystems and habitats. Translating these real-time effects into their long-term consequences remains a challenge. The rapid and extreme warming period that occurred after the Last Glacial Maximum (LGM) during the Pleistocene-Holocene transition (7-12 thousand years ago) provides an opportunity to gain insights into the long-term responses of natural populations to periods with global warming. The effects of this post-LGM warming period have been assessed in many terrestrial taxa, whereas insights into the impacts of rapid global warming on marine taxa remain limited, especially for megafauna. In order to understand how large-scale climate fluctuations during the post-LGM affected baleen whales and their prey, we conducted an extensive, large-scale analysis of the long-term effects of the post-LGM warming on abundance and inter-ocean connectivity in eight baleen whale and seven prey (fish and invertebrates) species across the Southern and the North Atlantic Ocean; two ocean basins that differ in key oceanographic features. The analysis was based upon 7032 mitochondrial DNA sequences as well as genome-wide DNA sequence variation in 100 individuals. The estimated temporal changes in genetic diversity during the last 30,000 years indicated that most baleen whale populations underwent post-LGM expansions in both ocean basins. The increase in baleen whale abundance during the Holocene was associated with simultaneous changes in their prey and climate. Highly correlated, synchronized and exponential increases in abundance in both baleen whales and their prey in the Southern Ocean were indicative of a dramatic increase in ocean productivity. In contrast, the demographic fluctuations observed in baleen whales and their prey in the North Atlantic Ocean were subtle, varying across taxa and time. Perhaps most important was the observation that the ocean-wide expansions and decreases in abundance that were initiated by the post-LGM global warming, continued for millennia after global temperatures stabilized, reflecting persistent, long-lasting impacts of global warming on marine fauna.
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Affiliation(s)
- Andrea A. Cabrera
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningenThe Netherlands
- GLOBE InstituteUniversity of CopenhagenCopenhagenDenmark
| | - Elena Schall
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningenThe Netherlands
| | - Martine Bérubé
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningenThe Netherlands
- Center for Coastal StudiesProvincetownMassachusettsUSA
| | - Pia Anderwald
- Swiss National ParkChastè Planta‐WildenbergZernezSwitzerland
| | | | - Simon Berrow
- Marine and Freshwater Research CentreGalway‐Mayo Institute of TechnologyGalwayIreland
- Irish Whale and Dolphin GroupMerchants QuayKilrushCounty ClareIreland
| | - Peter B. Best
- Department of Zoology and EntomologyMammal Research InstituteUniversity of PretoriaHatfieldSouth Africa
| | | | - Haydée A. Cunha
- Aquatic Mammals and Bioindicators Laboratory (MAQUA)Faculty of OceanographyState University of Rio de Janeiro ‐ UERJMaracanãRio de JaneiroBrazil
- Genetics Department of the Biology InstituteState University of Rio de Janeiro ‐ UERJMaracanãRio de JaneiroBrazil
| | - Luciano Dalla Rosa
- Laboratory of Ecology and Conservation of Marine MegafaunaInstitute of OceanographyFederal University of Rio Grande‐FURGRio GrandeRio Grande do SulBrazil
| | - Carolina Dias
- Aquatic Mammals and Bioindicators Laboratory (MAQUA)Faculty of OceanographyState University of Rio de Janeiro ‐ UERJMaracanãRio de JaneiroBrazil
| | - Kenneth P. Findlay
- Department of Zoology and EntomologyMammal Research InstituteUniversity of PretoriaHatfieldSouth Africa
- Department Conservation and Marine SciencesCentre for Sustainable Oceans EconomyCape Peninsula University of TechnologyCape TownSouth Africa
| | - Tore Haug
- Research Group Marine MammalsInstitute of Marine ResearchTromsøNorway
| | | | | | | | - Scott Landry
- Center for Coastal StudiesProvincetownMassachusettsUSA
| | - Finn Larsen
- Section for Ecosystem based Marine ManagementNational Institute of Aquatic ResourcesTechnical University of DenmarkKongens LyngbyDenmark
| | - Xênia M. Lopes
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningenThe Netherlands
| | | | | | - Tom Oosting
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningenThe Netherlands
- School of Biological SciencesVictoria University of WellingtonWellingtonNew Zealand
| | - Richard M. Pace
- Northeast Fisheries Science CenterNational Marine Fisheries ServiceWoods HoleMassachusettsUSA
| | | | - Angeliki Paspati
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningenThe Netherlands
- Hellenic Agricultural Organisation‐“DIMITRA”HerakleionCreteGreece
| | | | - Rui Prieto
- Institute of Marine Sciences – Okeanos & Institute of Marine Research ‐ IMARUniversity of the AzoresHortaPortugal
| | - Christian Ramp
- Sea Mammal Research UnitScottish Oceans InstituteUniversity of St. AndrewsScotlandUK
- Mingan Island Cetacean StudySaint LambertQuébecCanada
| | - Jooke Robbins
- Center for Coastal StudiesProvincetownMassachusettsUSA
| | - Richard Sears
- Greenland Climate Research CentreGreenland Institute of Natural ResourcesNuukGreenland
| | - Eduardo R. Secchi
- Laboratory of Ecology and Conservation of Marine MegafaunaInstitute of OceanographyFederal University of Rio Grande‐FURGRio GrandeRio Grande do SulBrazil
| | - Mónica A. Silva
- Institute of Marine Sciences – Okeanos & Institute of Marine Research ‐ IMARUniversity of the AzoresHortaPortugal
| | - Malene Simon
- Greenland Climate Research CentreGreenland Institute of Natural ResourcesNuukGreenland
| | | | - Øystein Wiig
- Natural History MuseumUniversity of OsloOsloNorway
| | - Nils Øien
- Marine Mammal DivisionInstitute of Marine ResearchBergenNorway
| | - Per J. Palsbøll
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningenThe Netherlands
- Center for Coastal StudiesProvincetownMassachusettsUSA
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Neveceralova P, Carroll EL, Steel D, Vermeulen E, Elwen S, Zidek J, Stafford JK, Chivell W, Hulva P. Population Changes in a Whale Breeding Ground Revealed by Citizen Science Noninvasive Genetics. Glob Ecol Conserv 2022. [DOI: 10.1016/j.gecco.2022.e02141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Insights on the historical biogeography of Philippine domestic pigs and its relationship with continental domestic pigs and wild boars. PLoS One 2022; 17:e0254299. [PMID: 35344556 PMCID: PMC8959178 DOI: 10.1371/journal.pone.0254299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 03/14/2022] [Indexed: 11/19/2022] Open
Abstract
The Philippine archipelago was believed to have never been connected to the Asian continent even during the severe Quaternary sea-level drops. As a result, the history of domestic pig (Sus scrofa) dispersal in the Philippines remains controversial and must have some anthropogenic origin associated with human migration events. In this study, the context of origin, dispersal, and the level of genetic introgression in Philippine domestic pigs were deduced using mitochondrial DNA D-loop analysis altogether with domestic pigs and wild boar corresponding to their geographic origin. The results revealed considerable genetic diversity (0.900±0.016) and widespread Asian pig-ancestry (94.60%) in the phylogenetic analysis, with admixed European pig-origin (5.10%) harboring various fractions of ancestry from Berkshire and Landrace. The close genetic connection between the continental wild boars and domestic pigs present in the Philippine domestic pigs corroborates our hypothesis of a genetic signal that may be associated with the recently reported multiple waves of human migrations to the Philippines. The Haplogroup D7, reported to occur only in Indo-Burma Biodiversity Hotspots, included a high frequency of Philippine domestic pig haplotypes (54.08%), which poses an interesting challenge because its distribution is not consistent with the hypothesized migration route of Neolithic Austronesian-speaking populations. We detected the first Pacific Clade signature and ubiquitously distributed D2 haplotypes (Asian major) on several Philippine islands. The analyses of mismatch distribution and neutrality test were consistent with the Bayesian skyline plot which showed a long stationary period of effective population size. The population decline was consistent with the pronounced population bottleneck in Asian and European pigs during the interglacial periods of the Pleistocene. The results of this study will support the conservation strategies and improvements of economically important genetic resources in the Philippines.
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37
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Ruiz-García M, Cáceres AM, Luengas-Villamil K, Aliaga-Rossel E, Zeballos H, Singh MD, Shostell JM. Mitogenomic phylogenetics and population genetics of several taxa of agouties (Dasyprocta sp., Dasyproctidae, Rodentia): molecular nonexistence of some claimed endemic taxa. MAMMAL RES 2022. [DOI: 10.1007/s13364-022-00626-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Torre S, Sebastiani F, Burbui G, Pecori F, Pepori AL, Passeri I, Ghelardini L, Selvaggi A, Santini A. Novel Insights Into Refugia at the Southern Margin of the Distribution Range of the Endangered Species Ulmus laevis. FRONTIERS IN PLANT SCIENCE 2022; 13:826158. [PMID: 35242155 PMCID: PMC8886209 DOI: 10.3389/fpls.2022.826158] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/14/2022] [Indexed: 05/27/2023]
Abstract
Riparian ecosystems, in long-time developed regions, are among the most heavily impacted by human activities; therefore, the distribution of tree riparian species, such as Ulmus laevis, is highly affected. This phenomenon is particularly relevant at the margins of the natural habitat of the species, where populations are small and rare. In these cases, it is difficult to distinguish between relics or introductions, but it is relevant for the restoration of natural habitats and conservation strategies. The aim of this study was to study the phylogeography of the southern distribution of the species. We sequenced the entire chloroplast (cp) genomes of 54 individuals from five sampled populations across different European regions to highlight polymorphisms and analyze their distribution. Thirty-two haplotypes were identified. All the sampled populations showed private haplotypes that can be considered an indicator of long-term residency, given the low mutation rate of organellar DNA. The network of all haplotypes showed a star-like topology, and Serbian haplotypes were present in all branches. The Balkan population showed the highest level of nucleotide and genetic diversity. Low genetic differentiation between populations was observed but we found a significant differentiation among Serbia vs. other provenances. Our estimates of divergent time of U. laevis samples highlight the early split of above all Serbian individuals from other populations, emphasizing the reservoir role of white elm genetic diversity of Serbian population.
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Affiliation(s)
- Sara Torre
- Istituto per la Protezione Sostenibile delle Piante, IPSP-CNR, Florence, Italy
| | - Federico Sebastiani
- Istituto per la Protezione Sostenibile delle Piante, IPSP-CNR, Florence, Italy
| | - Guia Burbui
- Istituto per la Protezione Sostenibile delle Piante, IPSP-CNR, Florence, Italy
| | - Francesco Pecori
- Istituto per la Protezione Sostenibile delle Piante, IPSP-CNR, Florence, Italy
| | - Alessia L. Pepori
- Istituto per la Protezione Sostenibile delle Piante, IPSP-CNR, Florence, Italy
| | - Iacopo Passeri
- Istituto per la Protezione Sostenibile delle Piante, IPSP-CNR, Florence, Italy
| | - Luisa Ghelardini
- Dipartimento di Scienze e Tecnologie Agrarie, Alimentari Ambientali e Forestali (DAGRI), Università di Firenze, Florence, Italy
| | - Alberto Selvaggi
- Istituto per le Piante da Legno e l’Ambiente - I.P.L.A. S.p.A., Turin, Italy
| | - Alberto Santini
- Istituto per la Protezione Sostenibile delle Piante, IPSP-CNR, Florence, Italy
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40
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van der Zee JP, Christianen MJA, Bérubé M, Nava M, van der Wal S, Berkel J, Bervoets T, Meijer Zu Schlochtern M, Becking LE, Palsbøll PJ. Demographic changes in Pleistocene sea turtles were driven by past sea level fluctuations affecting feeding habitat availability. Mol Ecol 2021; 31:1044-1056. [PMID: 34861074 PMCID: PMC9299637 DOI: 10.1111/mec.16302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 11/18/2021] [Accepted: 11/22/2021] [Indexed: 11/28/2022]
Abstract
Pleistocene environmental changes are generally assumed to have dramatically affected species’ demography via changes in habitat availability, but this is challenging to investigate due to our limited knowledge of how Pleistocene ecosystems changed through time. Here, we tracked changes in shallow marine habitat availability resulting from Pleistocene sea level fluctuations throughout the last glacial cycle (120–14 thousand years ago; kya) and assessed correlations with past changes in genetic diversity inferred from genome‐wide SNPs, obtained via ddRAD sequencing, in Caribbean hawksbill turtles, which feed in coral reefs commonly found in shallow tropical waters. We found sea level regression resulted in an average 75% reduction in shallow marine habitat availability during the last glacial cycle. Changes in shallow marine habitat availability correlated strongly with past changes in hawksbill turtle genetic diversity, which gradually declined to ~1/4th of present‐day levels during the Last Glacial Maximum (LGM; 26–19 kya). Shallow marine habitat availability and genetic diversity rapidly increased after the LGM, signifying a population expansion in response to warming environmental conditions. Our results suggest a positive correlation between Pleistocene environmental changes, habitat availability and species’ demography, and that demographic changes in hawksbill turtles were potentially driven by feeding habitat availability. However, we also identified challenges associated with disentangling the potential environmental drivers of past demographic changes, which highlights the need for integrative approaches. Our conclusions underline the role of habitat availability on species’ demography and biodiversity, and that the consequences of ongoing habitat loss should not be underestimated.
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Affiliation(s)
- Jurjan P van der Zee
- Marine Evolution and Conservation, Groningen Institute for Evolutionary Life Sciences, University of Groningen, AG Groningen, the Netherlands.,Wageningen Marine Research, Den Helder, the Netherlands
| | - Marjolijn J A Christianen
- Marine Evolution and Conservation, Groningen Institute for Evolutionary Life Sciences, University of Groningen, AG Groningen, the Netherlands.,Aquatic Ecology and Water Quality Management Group, Wageningen University & Research, Wageningen, the Netherlands
| | - Martine Bérubé
- Marine Evolution and Conservation, Groningen Institute for Evolutionary Life Sciences, University of Groningen, AG Groningen, the Netherlands.,Center for Coastal Studies, Provincetown, Massachusetts, USA
| | - Mabel Nava
- Sea Turtle Conservation Bonaire, Kralendijk, Bonaire, Caribbean Netherlands
| | | | - Jessica Berkel
- Sint Eustatius National Parks Foundation, Sint Eustatius, Caribbean Netherlands
| | - Tadzio Bervoets
- Sint Maarten Nature Foundation, Cole Bay, Sint Maarten.,Dutch Caribbean Nature Alliance, Kralendijk, Bonaire, Caribbean Netherlands
| | | | - Leontine E Becking
- Wageningen Marine Research, Den Helder, the Netherlands.,Marine Animal Ecology Group, Wageningen University & Research, Wageningen, the Netherlands
| | - Per J Palsbøll
- Marine Evolution and Conservation, Groningen Institute for Evolutionary Life Sciences, University of Groningen, AG Groningen, the Netherlands.,Center for Coastal Studies, Provincetown, Massachusetts, USA
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Lau SCY, Strugnell JM, Sands CJ, Silva CNS, Wilson NG. Evolutionary innovations in Antarctic brittle stars linked to glacial refugia. Ecol Evol 2021; 11:17428-17446. [PMID: 34938519 PMCID: PMC8668817 DOI: 10.1002/ece3.8376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 11/01/2021] [Accepted: 11/03/2021] [Indexed: 12/31/2022] Open
Abstract
The drivers behind evolutionary innovations such as contrasting life histories and morphological change are central questions of evolutionary biology. However, the environmental and ecological contexts linked to evolutionary innovations are generally unclear. During the Pleistocene glacial cycles, grounded ice sheets expanded across the Southern Ocean continental shelf. Limited ice-free areas remained, and fauna were isolated from other refugial populations. Survival in Southern Ocean refugia could present opportunities for ecological adaptation and evolutionary innovation. Here, we reconstructed the phylogeographic patterns of circum-Antarctic brittle stars Ophionotus victoriae and O. hexactis with contrasting life histories (broadcasting vs brooding) and morphology (5 vs 6 arms). We examined the evolutionary relationship between the two species using cytochrome c oxidase subunit I (COI) data. COI data suggested that O. victoriae is a single species (rather than a species complex) and is closely related to O. hexactis (a separate species). Since their recent divergence in the mid-Pleistocene, O. victoriae and O. hexactis likely persisted differently throughout glacial maxima, in deep-sea and Antarctic island refugia, respectively. Genetic connectivity, within and between the Antarctic continental shelf and islands, was also observed and could be linked to the Antarctic Circumpolar Current and local oceanographic regimes. Signatures of a probable seascape corridor linking connectivity between the Scotia Sea and Prydz Bay are also highlighted. We suggest that survival in Antarctic island refugia was associated with increase in arm number and a switch from broadcast spawning to brooding in O. hexactis, and propose that it could be linked to environmental changes (such as salinity) associated with intensified interglacial-glacial cycles.
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Affiliation(s)
- Sally C. Y. Lau
- Centre for Sustainable Tropical Fisheries and Aquaculture and College of Science and EngineeringJames Cook UniversityTownsvilleQldAustralia
| | - Jan M. Strugnell
- Centre for Sustainable Tropical Fisheries and Aquaculture and College of Science and EngineeringJames Cook UniversityTownsvilleQldAustralia
- Department of Ecology, Environment and EvolutionSchool of Life SciencesLa Trobe UniversityMelbourneVicAustralia
- Securing Antarctica's Environmental FutureJames Cook UniversityTownsvilleQldAustralia
| | - Chester J. Sands
- British Antarctic SurveyNatural Environment Research CouncilCambridgeUK
| | - Catarina N. S. Silva
- Centre for Sustainable Tropical Fisheries and Aquaculture and College of Science and EngineeringJames Cook UniversityTownsvilleQldAustralia
| | - Nerida G. Wilson
- Collections & ResearchWestern Australian MuseumWelshpoolWAAustralia
- School of Biological SciencesUniversity of Western AustraliaPerthWAAustralia
- Securing Antarctica's Environmental FutureWestern Australian MuseumWelshpoolWAAustralia
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Teixeira H, Salmona J, Arredondo A, Mourato B, Manzi S, Rakotondravony R, Mazet O, Chikhi L, Metzger J, Radespiel U. Impact of model assumptions on demographic inferences: the case study of two sympatric mouse lemurs in northwestern Madagascar. BMC Ecol Evol 2021; 21:197. [PMID: 34727890 PMCID: PMC8561976 DOI: 10.1186/s12862-021-01929-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 10/18/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Quaternary climate fluctuations have been acknowledged as major drivers of the geographical distribution of the extraordinary biodiversity observed in tropical biomes, including Madagascar. The main existing framework for Pleistocene Malagasy diversification assumes that forest cover was strongly shaped by warmer Interglacials (leading to forest expansion) and by cooler and arid glacials (leading to forest contraction), but predictions derived from this scenario for forest-dwelling animals have rarely been tested with genomic datasets. RESULTS We generated genomic data and applied three complementary demographic approaches (Stairway Plot, PSMC and IICR-simulations) to infer population size and connectivity changes for two forest-dependent primate species (Microcebus murinus and M. ravelobensis) in northwestern Madagascar. The analyses suggested major demographic changes in both species that could be interpreted in two ways, depending on underlying model assumptions (i.e., panmixia or population structure). Under panmixia, the two species exhibited larger population sizes across the Last Glacial Maximum (LGM) and towards the African Humid Period (AHP). This peak was followed by a population decline in M. ravelobensis until the present, while M. murinus may have experienced a second population expansion that was followed by a sharp decline starting 3000 years ago. In contrast, simulations under population structure suggested decreasing population connectivity between the Last Interglacial and the LGM for both species, but increased connectivity during the AHP exclusively for M. murinus. CONCLUSION Our study shows that closely related species may differ in their responses to climatic events. Assuming that Pleistocene climatic conditions in the lowlands were similar to those in the Malagasy highlands, some demographic dynamics would be better explained by changes in population connectivity than in population size. However, changes in connectivity alone cannot be easily reconciled with a founder effect that was shown for M. murinus during its colonization of the northwestern Madagascar in the late Pleistocene. To decide between the two alternative models, more knowledge about historic forest dynamics in lowland habitats is necessary. Altogether, our study stresses that demographic inferences strongly depend on the underlying model assumptions. Final conclusions should therefore be based on a comparative evaluation of multiple approaches.
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Affiliation(s)
- Helena Teixeira
- Institute of Zoology, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559, Hannover, Germany.
| | - Jordi Salmona
- Laboratoire Évolution and Diversité Biologique (EDB UMR 5174), Université de Toulouse Midi-Pyrénées, CNRS, IRD, UPS, 118 Route de Narbonne, Bât. 4R1, 31062, Toulouse cedex 9, France
| | - Armando Arredondo
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande, 6, 2780-156, Oeiras, Portugal
- Université de Toulouse, Institut National des Sciences Appliquées, Institut de Mathématiques de Toulouse, Toulouse, France
| | - Beatriz Mourato
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande, 6, 2780-156, Oeiras, Portugal
| | - Sophie Manzi
- Laboratoire Évolution and Diversité Biologique (EDB UMR 5174), Université de Toulouse Midi-Pyrénées, CNRS, IRD, UPS, 118 Route de Narbonne, Bât. 4R1, 31062, Toulouse cedex 9, France
| | - Romule Rakotondravony
- Ecole Doctorale Ecosystèmes Naturels (EDEN), University of Mahajanga, 5 Rue Georges V - Immeuble KAKAL, Mahajanga Be, B.P. 652, 401, Mahajanga, Madagascar
- Faculté des Sciences, de Technologies et de l'Environnement, University of Mahajanga, 5 Rue Georges V - Immeuble KAKAL, Mahajanga Be, B.P. 652, 401, Mahajanga, Madagascar
| | - Olivier Mazet
- Université de Toulouse, Institut National des Sciences Appliquées, Institut de Mathématiques de Toulouse, Toulouse, France
| | - Lounès Chikhi
- Laboratoire Évolution and Diversité Biologique (EDB UMR 5174), Université de Toulouse Midi-Pyrénées, CNRS, IRD, UPS, 118 Route de Narbonne, Bât. 4R1, 31062, Toulouse cedex 9, France
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande, 6, 2780-156, Oeiras, Portugal
| | - Julia Metzger
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17p, 30559, Hannover, Germany
- Veterinary Functional Genomics, Max Planck Institute for Molecular Genetics, Ihnestrasse 73, 14195, Berlin, Germany
| | - Ute Radespiel
- Institute of Zoology, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559, Hannover, Germany.
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43
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Helmstetter AJ, Cable S, Rakotonasolo F, Rabarijaona R, Rakotoarinivo M, Eiserhardt WL, Baker WJ, Papadopulos AST. The demographic history of Madagascan micro-endemics: have rare species always been rare? Proc Biol Sci 2021; 288:20210957. [PMID: 34547905 PMCID: PMC8456134 DOI: 10.1098/rspb.2021.0957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 08/25/2021] [Indexed: 01/25/2023] Open
Abstract
Extinction has increased as human activities impact ecosystems, yet relatively few species have conservation assessments. Novel approaches are needed to highlight threatened species that are currently data-deficient. Many Madagascan plant species have extremely narrow ranges, but this may not have always been the case-it is unclear how the island's diverse flora evolved. To assess this, we generated restriction-site associated DNA sequence data for 10 Madagascan plant species, estimated effective population size (Ne) for each species and compared this to census (Nc) sizes. In each case, Ne was an order of magnitude larger than Nc-signifying rapid, recent population decline. We then estimated species' demographic history, tracking changes in Ne over time. We show that it is possible to predict extinction risk, particularly in the most threatened species. Furthermore, simulations showed that our approach has the power to detect population decline during the Anthropocene. Our analyses reveal that Madagascar's micro-endemics were not always rare, having experienced a rapid decline in their recent history. This casts further uncertainty over the processes that generated Madagascar's exceptional biodiversity. Our approach targets data-deficient species in need of conservation assessment, particularly in regions where human modification of the environment has been rapid.
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Affiliation(s)
- Andrew J. Helmstetter
- Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK
- Institut de Recherche pour le Développement (IRD), UMR-DIADE, 911 Avenue Agropolis, BP 64501, Montpellier 34394, France
| | - Stuart Cable
- Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK
- Kew Madagascar Conservation Centre, Lot II J 131 B Ambodivoanjo, Ivandry, Antananarivo 101, Madagascar
| | - Franck Rakotonasolo
- Kew Madagascar Conservation Centre, Lot II J 131 B Ambodivoanjo, Ivandry, Antananarivo 101, Madagascar
| | - Romer Rabarijaona
- Kew Madagascar Conservation Centre, Lot II J 131 B Ambodivoanjo, Ivandry, Antananarivo 101, Madagascar
| | - Mijoro Rakotoarinivo
- Mention Biologie et Ecologie Végétales, Faculté des Sciences, Université d'Antananarivo, Antananarivo BP 906101, Madagascar
| | - Wolf L. Eiserhardt
- Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK
- Department of Biology, Aarhus University, Aarhus, Denmark
| | | | - Alexander S. T. Papadopulos
- Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK
- Molecular Ecology and Evolution Bangor, Environment Centre Wales, School of Natural Sciences, Bangor University, Bangor LL57 2UW, UK
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44
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Li T, Wong TKF, Ranjard L, Rodrigo AG. pgHMA: Application of the heteroduplex mobility assay analysis in phylogenetics and population genetics. Mol Ecol Resour 2021; 22:653-663. [PMID: 34551204 DOI: 10.1111/1755-0998.13508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/01/2021] [Accepted: 09/06/2021] [Indexed: 11/26/2022]
Abstract
The heteroduplex mobility assay (HMA) has proven to be a robust tool for the detection of genetic variation. Here, we describe a simple and rapid application of the HMA by microfluidic capillary electrophoresis, for phylogenetics and population genetic analyses (pgHMA). We show how commonly applied techniques in phylogenetics and population genetics have equivalents with pgHMA: phylogenetic reconstruction with bootstrapping, skyline plots, and mismatch distribution analysis. We assess the performance and accuracy of pgHMA by comparing the results obtained against those obtained using standard methods of analyses applied to sequencing data. The resulting comparisons demonstrate that: (a) there is a significant linear relationship (R2 = .992) between heteroduplex mobility and genetic distance, (b) phylogenetic trees obtained by HMA and nucleotide sequences present nearly identical topologies, (c) clades with high pgHMA parametric bootstrap support also have high bootstrap support on nucleotide phylogenies, (d) skyline plots estimated from the UPGMA trees of HMA and Bayesian trees of nucleotide data reveal similar trends, especially for the median trend estimate of effective population size, and (e) optimized mismatch distributions of HMA are closely fitted to the mismatch distributions of nucleotide sequences. In summary, pgHMA is an easily-applied method for approximating phylogenetic diversity and population trends.
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Affiliation(s)
- Teng Li
- Research School of Biology, Australian National University, Canberra, ACT, Australia.,School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Thomas K F Wong
- Research School of Biology, Australian National University, Canberra, ACT, Australia
| | - Louis Ranjard
- Research School of Biology, Australian National University, Canberra, ACT, Australia.,PlantTech Research Institute, Tauranga, New Zealand
| | - Allen G Rodrigo
- Research School of Biology, Australian National University, Canberra, ACT, Australia.,School of Biological Sciences, University of Auckland, Auckland, New Zealand
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45
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Martins LF, Choueri EL, Oliveira AFS, Domingos FMCB, Caetano GHO, Cavalcante VHGL, Leite RN, Fouquet A, Rodrigues MT, Carnaval AC, Colli GR, Werneck FP. Whiptail lizard lineage delimitation and population expansion as windows into the history of Amazonian open ecosystems. SYST BIODIVERS 2021. [DOI: 10.1080/14772000.2021.1953185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Lidia F. Martins
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil
| | - Erik L. Choueri
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil
| | - Alan F. S. Oliveira
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil
| | | | - Gabriel H. O. Caetano
- Mitrani Department of Desert Ecology, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 849900 Midreshet Ben-Gurion, Israel
| | | | - Rafael N. Leite
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil
| | - Antoine Fouquet
- Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Bâtiment 4R1, 118 Route de Narbonne 31077, Toulouse, France
| | - Miguel T. Rodrigues
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Ana C. Carnaval
- City College of New York and Biology Ph.D. Program, The Graduate Center City University of New York, New York, NY 10031, USA
| | - Guarino R. Colli
- Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF, Brazil
| | - Fernanda P. Werneck
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil
- Programa de Coleções Científicas Biológicas, Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil
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46
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Brüniche-Olsen A, Bickham JW, Godard-Codding CA, Brykov VA, Kellner KF, Urban J, DeWoody JA. Influence of Holocene habitat availability on Pacific gray whale ( Eschrichtius robustus) population dynamics as inferred from whole mitochondrial genome sequences and environmental niche modeling. J Mammal 2021. [DOI: 10.1093/jmammal/gyab032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Environmental changes since the Pleistocene and commercial whaling in the last few centuries have drastically reduced many whale populations, including gray whales in the North Pacific. Herein we use complete mitogenome sequences from 74 individuals to evaluate gray whale phylogeography and historical demography, then use environmental niche modeling to assess how habitat availability has changed through time for Pacific gray whales. We identify a large degree of haplotype sharing between gray whales sampled in Russian and Mexican waters, coupled with very limited matrilineal population structure. Confirming previous studies, our environmental niche models showed a decrease in available habitat during the Last Glacial Maximum, but we find no genetic signals of recent population declines in mitochondrial genomes despite both sustained habitat loss and a commercial whaling bottleneck. Our results illustrate the complex dynamics of baleen whale biogeography since the Holocene as well as the difficulty in detecting recent demographic bottlenecks from mitochondrial DNA sequences.
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Affiliation(s)
- Anna Brüniche-Olsen
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA
| | - John W Bickham
- Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, USA
| | - Celine A Godard-Codding
- Institute of Environmental and Human Health, Texas Tech University (TTU) and TTU Health Sciences Center, Lubbock, TX, USA
| | - Vladimir A Brykov
- National Scientific Center for Marine Biology, Russian Academy of Sciences, Far Eastern Branch, Vladivostok, Russia
| | - Kenneth F Kellner
- Global Wildlife Conservation Center, State University of New York College of Environmental Science and Forestry, Syracuse, NY, USA
| | - Jorge Urban
- Departamento Academico de Ciencias Marinas y Costeras, Universidad Autonoma de Baja California Sur, Km 5.5 Carretera al Sur, Mezquitito, La Paz, BCS, Mexico
| | - J Andrew DeWoody
- Department of Biological Sciences, Purdue University, West Lafayette, IN, USA
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47
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The effect of landscape and human settlement on the genetic differentiation and presence of Paragonimus species in Mesoamerica. Int J Parasitol 2021; 52:13-21. [PMID: 34371019 DOI: 10.1016/j.ijpara.2021.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/29/2021] [Accepted: 05/31/2021] [Indexed: 11/21/2022]
Abstract
Foodborne diseases are a neglected research area, and despite the existence of many tools for diagnosis and genetic studies, very little is known about the effect of the landscape on the genetic diversity and presence of parasites. One of these foodborne disease is paragonimiasis, caused by trematodes of the genus Paragonimus, which is responsible for a high number of infections in humans and wild animals. The main Paragonimus sp reported in Mesoamerica is Paragonimus mexicanus, yet there are doubts about its correct identification as a unique species throughout the region. This, together with a lack of detailed knowledge about their ecology, evolution and differentiation, may complicate the implementation of control strategies across the Mesoamerican region. We had the goal of delimiting the species of P. mexicanus found throughout Mesoamerica and determining the effect of landscape and geology on the diversity and presence of the parasite. We found support for the delimitation of five genetic groups. The genetic differentiation among these groups was positively affected by elevation and the isolation of river basins, while the parasite's presence was affected negatively only by the presence of human settlements. These results suggest that areas with lower elevation, connected rivers basins, and an absence of human settlements have low genetic differentiation and high P. mexicanus presence, which may increase the risk of Paragonimus infection. These demonstrate the importance of accurate species delimitation and consideration of the effect of landscape on Paragonimus in the proposal of adequate control strategies. However, other landscape variables cannot be discarded, including temperature, rainfall regime, and spatial scale (local, landscape and regional). These additional variables were not explored here, and should be considered in future studies.
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48
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Dorey JB, Groom SVC, Velasco-Castrillón A, Stevens MI, Lee MSY, Schwarz MP. Holocene population expansion of a tropical bee coincides with early human colonization of Fiji rather than climate change. Mol Ecol 2021; 30:4005-4022. [PMID: 34184342 DOI: 10.1111/mec.16034] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 05/27/2021] [Accepted: 06/10/2021] [Indexed: 12/23/2022]
Abstract
There is substantial debate about the relative roles of climate change and human activities on biodiversity and species demographies over the Holocene. In some cases, these two factors can be resolved using fossil data, but for many taxa such data are not available. Inferring historical demographies of taxa has become common, but the methodologies are mostly recent and their shortcomings often unexplored. The bee genus Homalictus is developing into a tractable model system for understanding how native bee populations in tropical islands have responded to past climate change. We greatly expand on previous studies using sequences of the mitochondrial gene COI from 474 specimens and between 171 and 3928 autosomal (DArTSeq) single nucleotide polymorphism loci from 19 specimens of the native Fijian bee, Homalictus fijiensis, to explore its historical demography using coalescent and mismatch analyses. We ask whether past changes in demography were human- or climate-driven, while considering analytical assumptions. We show that inferred changes in population sizes are too recent to be explained by past climate change. Instead we find that a dramatic increase in population size for the main island of Viti Levu coincides with increasing occupation by humans and their modification of the environment. We found no corresponding change in bee population size for another major island, Kadavu, where human populations and agricultural activities have been historically very low. Our analyses indicate that molecular approaches can be used to disentangle the impacts of humans and climate change on a major tropical pollinator and that stringent analytical approaches are required for reliable interpretation of results.
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Affiliation(s)
- James B Dorey
- College of Science and Engineering, Flinders University, Adelaide, SA, Australia.,Biological and Earth Sciences, South Australian Museum, Adelaide, SA, Australia
| | - Scott V C Groom
- School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, Australia
| | | | - Mark I Stevens
- Biological and Earth Sciences, South Australian Museum, Adelaide, SA, Australia.,School of Biological Sciences, University of Adelaide, Adelaide, SA, Australia
| | - Michael S Y Lee
- College of Science and Engineering, Flinders University, Adelaide, SA, Australia.,Biological and Earth Sciences, South Australian Museum, Adelaide, SA, Australia
| | - Michael P Schwarz
- College of Science and Engineering, Flinders University, Adelaide, SA, Australia
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49
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Miller EF, Green RE, Balmford A, Maisano Delser P, Beyer R, Somveille M, Leonardi M, Amos W, Manica A. Bayesian Skyline Plots disagree with range size changes based on Species Distribution Models for Holarctic birds. Mol Ecol 2021; 30:3993-4004. [PMID: 34152661 DOI: 10.1111/mec.16032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 11/26/2022]
Abstract
During the Quaternary, large climate oscillations impacted the distribution and demography of species globally. Two approaches have played a major role in reconstructing changes through time: Bayesian Skyline Plots (BSPs), which reconstruct population fluctuations based on genetic data, and Species Distribution Models (SDMs), which allow us to back-cast the range occupied by a species based on its climatic preferences. In this paper, we contrast these two approaches by applying them to a large data set of 102 Holarctic bird species, for which both mitochondrial DNA sequences and distribution maps are available, to reconstruct their dynamics since the Last Glacial Maximum (LGM). Most species experienced an increase in effective population size (Ne , as estimated by BSPs) as well as an increase in geographical range (as reconstructed by SDMs) since the LGM; however, we found no correlation between the magnitude of changes in Ne and range size. The only clear signal we could detect was a later and greater increase in Ne for wetland birds compared to species that live in other habitats, a probable consequence of a delayed and more extensive increase in the extent of this habitat type after the LGM. The lack of correlation between SDM and BSP reconstructions could not be reconciled even when range shifts were considered. We suggest that this pattern might be linked to changes in population densities, which can be independent of range changes, and caution that interpreting either SDMs or BSPs independently is problematic and potentially misleading.
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Affiliation(s)
| | - Rhys E Green
- Department of Zoology, University of Cambridge, Cambridge, UK
| | - Andrew Balmford
- Department of Zoology, University of Cambridge, Cambridge, UK
| | | | - Robert Beyer
- Department of Zoology, University of Cambridge, Cambridge, UK
| | | | | | - William Amos
- Department of Zoology, University of Cambridge, Cambridge, UK
| | - Andrea Manica
- Department of Zoology, University of Cambridge, Cambridge, UK
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50
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Menardo F, Gagneux S, Freund F. Multiple Merger Genealogies in Outbreaks of Mycobacterium tuberculosis. Mol Biol Evol 2021; 38:290-306. [PMID: 32667991 PMCID: PMC8480183 DOI: 10.1093/molbev/msaa179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The Kingman coalescent and its developments are often considered among the most important advances in population genetics of the last decades. Demographic inference based on coalescent theory has been used to reconstruct the population dynamics and evolutionary history of several species, including Mycobacterium tuberculosis (MTB), an important human pathogen causing tuberculosis. One key assumption of the Kingman coalescent is that the number of descendants of different individuals does not vary strongly, and violating this assumption could lead to severe biases caused by model misspecification. Individual lineages of MTB are expected to vary strongly in reproductive success because 1) MTB is potentially under constant selection due to the pressure of the host immune system and of antibiotic treatment, 2) MTB undergoes repeated population bottlenecks when it transmits from one host to the next, and 3) some hosts show much higher transmission rates compared with the average (superspreaders). Here, we used an approximate Bayesian computation approach to test whether multiple-merger coalescents (MMC), a class of models that allow for large variation in reproductive success among lineages, are more appropriate models to study MTB populations. We considered 11 publicly available whole-genome sequence data sets sampled from local MTB populations and outbreaks and found that MMC had a better fit compared with the Kingman coalescent for 10 of the 11 data sets. These results indicate that the null model for analyzing MTB outbreaks should be reassessed and that past findings based on the Kingman coalescent need to be revisited.
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Affiliation(s)
- Fabrizio Menardo
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Sébastien Gagneux
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Fabian Freund
- Department of Plant Biodiversity and Breeding Informatics, Institute of Plant Breeding, Seed Science and Population Genetics, University of Hohenheim, Stuttgart, Germany
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