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Sapkota S, Boggess SL, Trigiano RN, Klingeman WE, Hadziabdic D, Coyle DR, Nowicki M. Microsatellite Loci Reveal High Genetic Diversity, Mutation, and Migration Rates as Invasion Drivers of Callery Pear ( Pyrus calleryana) in the Southeastern United States. Front Genet 2022; 13:861398. [PMID: 35480304 PMCID: PMC9037086 DOI: 10.3389/fgene.2022.861398] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/07/2022] [Indexed: 11/19/2022] Open
Abstract
Pyrus calleryana Decne. (Callery pear) is a deciduous tree native to China, Japan, Korea, and Taiwan. It is a popular ornamental tree in the United States (US) with early spring blooms and vibrant fall color. There are at least 26 cultivars of P. calleryana available in the US of which “Bradford” is the most well-known. Open-pollinated P. calleryana escapees are becoming one of the most common invasive tree species in the eastern United States. Developing better management practices for invasive P. calleryana requires detailed knowledge about reproductive biology and genetic diversity of the species, however, little is currently known about genetic variability within those open-pollinated populations. We investigated genetic diversity and population structure of non-cultivated, escaped P. calleryana populations within a ∼177 km radius in the southeastern United States. Because P. calleryana exhibits a range of morphological variation with great evolutionary potential, we hypothesized that a high genetic diversity would be manifested among escaped P. calleryana. Using 15 previously developed microsatellite loci, we genotyped 180 open-pollinated P. calleryana individuals that were collected across six naturally occurring sites in Tennessee, Georgia, and South Carolina, United States. Our results demonstrated the presence of a population structure with high genetic diversity, high gene flow, and high genetic differentiation between individuals across collection sites. Our results revealed that P. calleryana populations had differentiated shortly after the introduction to the US, most likely from specimens imported from Asia, consistent with historical records and our prior findings. The high invasive potential of the species is perhaps best underscored by transformation of P. calleryana specimens introduced from Asia into escape populations at continental scale across the United States. Our data also provided novel insight into potential issues that could be problematic for the future as P. calleryana may pose a potential threat to the economy, ecology, and native biodiversity in invaded areas.
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Affiliation(s)
- Shiwani Sapkota
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
| | - Sarah L Boggess
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
| | - Robert N Trigiano
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
| | - William E Klingeman
- Department of Plant Sciences, University of Tennessee, Knoxville, TN, United States
| | - Denita Hadziabdic
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
| | - David R Coyle
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC, United States
| | - Marcin Nowicki
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
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Prentice MB, Vye SR, Jenkins SR, Shaw PW, Ironside JE. Genetic diversity and relatedness in aquaculture and marina populations of the invasive tunicate Didemnum vexillum in the British Isles. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02615-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractIntroductions of invasive, non-native species in the marine environment are increasing as human activity within coastal areas rises. Genetic datasets are useful tools to identify source populations, track routes of invasions, and illuminate the role of genetic variation in the establishment and subsequent spread of novel introductions. Here, a microsatellite dataset is used to estimate the genetic diversity and population structure of 7 introduced Didemnum vexillum populations in Britain and Ireland, 4 of which are associated with aquaculture and 3 with marinas. Genetic differentiation observed between these populations indicates human-mediated transport as the main mechanism underlying the population structure of D. vexillum in Britain and Ireland. In addition to elucidating patterns of population structure we found that aquaculture sites showed significantly higher genetic diversity (measured as allelic richness) in comparison to the marina sites. We discuss these findings in relation to the history of each invasion, the complex life history of D. vexillum, and available evidence of the relative invasiveness of these populations. Our results show numerous interesting patterns which highlight further research avenues to elucidate the complex factors underlying the global spread of this successful invader.
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3
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Musleh SS, Seeb LW, Seeb JE, Ernst B, Neira S, Harrod C, Gomez-Uchida D. Mixed-stock analyses of migratory, non-native Chinook salmon at sea and assignment to natal sites in fresh water at their introduced range in South America. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02319-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Barros T, Carvalho J, Fonseca C, Cushman SA. Assessing the complex relationship between landscape, gene flow, and range expansion of a Mediterranean carnivore. EUR J WILDLIFE RES 2019. [DOI: 10.1007/s10344-019-1274-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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5
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Postaire B, Gélin P, Bruggemann JH, Pratlong M, Magalon H. Population differentiation or species formation across the Indian and the Pacific Oceans? An example from the brooding marine hydrozoan Macrorhynchia phoenicea. Ecol Evol 2017; 7:8170-8186. [PMID: 29075441 PMCID: PMC5648676 DOI: 10.1002/ece3.3236] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 06/09/2017] [Accepted: 06/20/2017] [Indexed: 01/18/2023] Open
Abstract
Assessing population connectivity is necessary to construct effective marine protected areas. This connectivity depends, among other parameters, inherently on species dispersal capacities. Isolation by distance (IBD) is one of the main modes of differentiation in marine species, above all in species presenting low dispersal abilities. This study reports the genetic structuring in the tropical hydrozoan Macrorhynchia phoenicea α (sensu Postaire et al., 2016a), a brooding species, from 30 sampling sites in the Western Indian Ocean and the Tropical Southwestern Pacific, using 15 microsatellite loci. At the local scale, genet dispersal relied on asexual propagation at short distance, which was not found at larger scales. Considering one representative per clone, significant positive FIS values (from −0.327*** to 0.411***) were found within almost all sites. Gene flow was extremely low at all spatial scales, among sites within islands (<10 km distance) and among islands (100 to >11,000 km distance), with significant pairwise FST values (from 0.035*** to 0.645***). A general pattern of IBD was found at the Indo‐Pacific scale, but also within ecoregions in the Western Indian Ocean province. Clustering and network analyses identified each island as a potential independent population, while analysis of molecular variance indicated that population genetic differentiation was significant at small (within island) and intermediate (among islands within province) spatial scales. As shown by this species, a brooding life cycle might be corollary of the high population differentiation found in some coastal marine species, thwarting regular dispersal at distances more than a few kilometers and probably leading to high cryptic diversity, each island housing independent evolutionary lineages.
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Affiliation(s)
- Bautisse Postaire
- UMR ENTROPIE Université de La Réunion/CNRS/IRD Université de La Réunion Saint Denis France.,Laboratoire d'Excellence CORAIL Perpignan France.,IMBE UMR 7263 Aix Marseille Université/CNRS/IRD/Avignon Université Marseille France
| | - Pauline Gélin
- UMR ENTROPIE Université de La Réunion/CNRS/IRD Université de La Réunion Saint Denis France.,Laboratoire d'Excellence CORAIL Perpignan France
| | - J Henrich Bruggemann
- UMR ENTROPIE Université de La Réunion/CNRS/IRD Université de La Réunion Saint Denis France.,Laboratoire d'Excellence CORAIL Perpignan France
| | - Marine Pratlong
- IMBE UMR 7263 Aix Marseille Université/CNRS/IRD/Avignon Université Marseille France.,I2M Equipe Evolution Biologique et Modélisation Aix Marseille Université/CNRS/Centrale Marseille Marseille France
| | - Hélène Magalon
- UMR ENTROPIE Université de La Réunion/CNRS/IRD Université de La Réunion Saint Denis France.,Laboratoire d'Excellence CORAIL Perpignan France
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6
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Microsatellite evidence of dispersal mechanism of red swamp crayfish (Procambarus clarkii) in the Pearl River basin and implications for its management. Sci Rep 2017; 7:8272. [PMID: 28811671 PMCID: PMC5557917 DOI: 10.1038/s41598-017-08552-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 07/14/2017] [Indexed: 12/18/2022] Open
Abstract
Discerning the dispersal patterns of invasive species is critically important for the design of effective management strategies and the development of appropriate theoretical models predicting the spatial expansion of introduced populations. Post-introduction dispersal may occur naturally or via human transport, but for many organisms, assessing the relative contribution of each of these factors is difficult using traditional methods. Here, we explored the genetic patterns associated with the spread of red swamp crayfish (Procambarus clarkii) among 21 populations in the Pearl River basin and 2 peripheral populations in the Yangtze River basin. We found the genetic diversity of P. clarkii in the Pearl River basin was somewhat lower than in the Yangtze River basin. We also found (1) there was significant genetic differentiation between populations, (2) genetic differentiation was not related to geographic distance (i.e., isolation by distance), and (3) a Bayesian assignment analysis revealed three distinct genetic clusters and genetic admixture. Our results therefore provide evidence that human-mediated multiple introductions occurred in the Pearl River basin. Anthropogenic activities such as commercial transportation were likely responsible for the long-distance dispersal of P. clarkii. This study provides useful information for developing management strategies.
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Postaire B, Gélin P, Bruggemann JH, Magalon H. One species for one island? Unexpected diversity and weak connectivity in a widely distributed tropical hydrozoan. Heredity (Edinb) 2017; 118:385-394. [PMID: 28177325 DOI: 10.1038/hdy.2016.126] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 10/03/2016] [Accepted: 11/05/2016] [Indexed: 11/09/2022] Open
Abstract
Isolation by distance (IBD) is one of the main modes of differentiation in marine species, above all in species presenting low dispersal capacities. This study reports the genetic structuring in the tropical hydrozoan Lytocarpia brevirostris α (sensu Postaire et al, 2016b), a brooding species, from 13 populations in the Western Indian Ocean (WIO) and one from New Caledonia (Tropical Southwestern Pacific). At the local scale, populations rely on asexual propagation at short distance, which was not found at larger scales; identical genotypes were restricted to single populations. After the removal of repeated genotypes, all populations presented significant positive FIS values (between 0.094*** and 0.335***). Gene flow was extremely low at all spatial scales, between sites within islands (<10 km distance) and among islands (100 to>11 000 km distance), with significant pairwise FST values (between 0.012*** and 0.560***). A general pattern of IBD was found at the Indo-Pacific scale, but also within sampled ecoregions of the WIO province. Clustering analyses identified each sampled island as an independent population, whereas analysis of molecular variance indicated that population genetic differentiation was significant at small (within island) and intermediate (among islands within province) spatial scales. The high population differentiation might reflect the life cycle of this brooding hydrozoan, possibly preventing regular dispersal at distances more than a few kilometres and probably leading to high cryptic diversity, each island housing an independent evolutionary lineage.
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Affiliation(s)
- B Postaire
- Université de La Réunion, UMR ENTROPIE Université de La Réunion-CNRS-IRD, Saint Denis, France.,Laboratoire d'Excellence CORAIL, Perpignan, France
| | - P Gélin
- Université de La Réunion, UMR ENTROPIE Université de La Réunion-CNRS-IRD, Saint Denis, France.,Laboratoire d'Excellence CORAIL, Perpignan, France
| | - J H Bruggemann
- Université de La Réunion, UMR ENTROPIE Université de La Réunion-CNRS-IRD, Saint Denis, France.,Laboratoire d'Excellence CORAIL, Perpignan, France
| | - H Magalon
- Université de La Réunion, UMR ENTROPIE Université de La Réunion-CNRS-IRD, Saint Denis, France.,Laboratoire d'Excellence CORAIL, Perpignan, France
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8
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Cao LJ, Wei SJ, Hoffmann AA, Wen JB, Chen M. Rapid genetic structuring of populations of the invasive fall webworm in relation to spatial expansion and control campaigns. DIVERS DISTRIB 2016. [DOI: 10.1111/ddi.12486] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Li-Jun Cao
- Beijing Key Laboratory for Forest Pest Control; College of Forestry; Beijing Forestry University; Beijing 100083 China
- Institute of Plant and Environmental Protection; Beijing Academy of Agriculture and Forestry Sciences; Beijing 100097 China
| | - Shu-Jun Wei
- Institute of Plant and Environmental Protection; Beijing Academy of Agriculture and Forestry Sciences; Beijing 100097 China
| | - Ary Anthony Hoffmann
- School of BioSciences; Bio21 Institute; The University of Melbourne; Melbourne Vic 3010 Australia
| | - Jun-Bao Wen
- Beijing Key Laboratory for Forest Pest Control; College of Forestry; Beijing Forestry University; Beijing 100083 China
| | - Min Chen
- Beijing Key Laboratory for Forest Pest Control; College of Forestry; Beijing Forestry University; Beijing 100083 China
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9
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Richardson MF, Sherman CDH, Lee RS, Bott NJ, Hirst AJ. Multiple dispersal vectors drive range expansion in an invasive marine species. Mol Ecol 2016; 25:5001-5014. [PMID: 27552100 DOI: 10.1111/mec.13817] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 08/05/2016] [Accepted: 08/11/2016] [Indexed: 12/13/2022]
Abstract
The establishment and subsequent spread of invasive species is widely recognized as one of the most threatening processes contributing to global biodiversity loss. This is especially true for marine and estuarine ecosystems, which have experienced significant increases in the number of invasive species with the increase in global maritime trade. Understanding the rate and mechanisms of range expansion is therefore of significant interest to ecologists and conservation managers alike. Using a combination of population genetic surveys, environmental DNA (eDNA) plankton sampling and hydrodynamic modelling, we examined the patterns of introduction of the predatory Northern Pacific seastar (Asterias amurensis) and pathways of secondary spread within southeast Australia. Genetic surveys across the invasive range reveal some genetic divergence between the two main invasive regions and no evidence of ongoing gene flow, a pattern that is consistent with the establishment of the second invasive region via a human-mediated translocation event. In contrast, hydrodynamic modelling combined with eDNA plankton sampling demonstrated that the establishment of range expansion populations within a region is consistent with natural larval dispersal and recruitment. Our results suggest that both anthropogenic and natural dispersal vectors have played an important role in the range expansion of this species in Australia. The multiple modes of spread combined with high levels of fecundity and a long larval duration in A. amurensis suggests it is likely to continue its range expansion and significantly impact Australian marine ecosystems.
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Affiliation(s)
- Mark F Richardson
- Bioinformatics Core Research Group, Deakin University, 75 Pigdons Road, Locked Bag 20000, Geelong, Vic., 3220, Australia. .,School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Waurn Ponds Campus, 75 Pigdons Road, Locked Bag 20000, Geelong, Vic., 3220, Australia.
| | - Craig D H Sherman
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Waurn Ponds Campus, 75 Pigdons Road, Locked Bag 20000, Geelong, Vic., 3220, Australia
| | - Randall S Lee
- Applied Sciences Group, Environmental Protection Authority, Vic., 3085, Australia
| | - Nathan J Bott
- School of Science and Centre for Environmental Sustainability and Remediation, RMIT University, PO Box 71, Bundoora, Vic., 3083, Australia
| | - Alastair J Hirst
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Waurn Ponds Campus, 75 Pigdons Road, Locked Bag 20000, Geelong, Vic., 3220, Australia
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10
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Martin RAM, Obrecht DV, Stoner GA, O'Hearn RA, Lanning SW, Mabee WR. First record of occurrence of the invasive hydroid Cordylophora caspia (Cnidaria: Hydrozoa) in Missouri. SOUTHWEST NAT 2016. [DOI: 10.1894/0038-4909-61.3.260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Barros T, Ferreira E, Rocha RG, Gaubert P, Bandeira V, Souto L, Mira A, Fonseca C. Genetic signature of the northward expansion of the Egyptian mongoose Herpestes ichneumon(Herpestidae) in the Iberian Peninsula. Biol J Linn Soc Lond 2016. [DOI: 10.1111/bij.12743] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tânia Barros
- Departamento de Biologia & Centros de Estudos do Ambiente e do Mar (CESAM); Universidade de Aveiro; 3810-193 Aveiro Portugal
| | - Eduardo Ferreira
- Departamento de Biologia & Centros de Estudos do Ambiente e do Mar (CESAM); Universidade de Aveiro; 3810-193 Aveiro Portugal
| | - Rita Gomes Rocha
- Departamento de Biologia & Centros de Estudos do Ambiente e do Mar (CESAM); Universidade de Aveiro; 3810-193 Aveiro Portugal
- Departamento de Ciências Biológicas; Centro de Ciências Humanas e Naturais; Universidade Federal do Espírito Santo; Av. Fernando Ferrari 514, Goiabeiras 29075-910 Vitória ES Brazil
| | - Philippe Gaubert
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UM-CNRS-IRD-CIRAD-EPHE; Université de Montpellier; Place Eugène Bataillon - CC 64; 34095 Montpellier, Cedex 05 France
| | - Victor Bandeira
- Departamento de Biologia & Centros de Estudos do Ambiente e do Mar (CESAM); Universidade de Aveiro; 3810-193 Aveiro Portugal
| | - Luis Souto
- Departamento de Biologia & Centros de Estudos do Ambiente e do Mar (CESAM); Universidade de Aveiro; 3810-193 Aveiro Portugal
| | - António Mira
- Unidade de Biologia da Conservação; Universidade de Évora; 7002-554 Évora Portugal
| | - Carlos Fonseca
- Departamento de Biologia & Centros de Estudos do Ambiente e do Mar (CESAM); Universidade de Aveiro; 3810-193 Aveiro Portugal
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12
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Miglietta MP, Odegard D, Faure B, Faucci A. Barcoding Techniques Help Tracking the Evolutionary History of the Introduced Species Pennaria disticha (Hydrozoa, Cnidaria). PLoS One 2015; 10:e0144762. [PMID: 26657561 PMCID: PMC4687645 DOI: 10.1371/journal.pone.0144762] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 11/22/2015] [Indexed: 11/19/2022] Open
Abstract
The Christmas tree hydroid Pennaria disticha is listed as one of the most common introduced species in Hawaii. Firstly reported in Kaneohe Bay (Oahu) in 1928, it is now established throughout the entire archipelago, including the Northwestern Hawaiian Islands, a U.S. National Monument and World Heritage site. The Hawaiian population of P. disticha has also been reported as being the source of further introductions to Palmyra Atoll in the U.S. Line Islands. Using a phylogenetic hypothesis based on a 611 base pair fragment of the mitochondrial 16S barcoding gene, we demonstrate that P. disticha is a complex of cryptic species, rather than one species with cosmopolitan distribution. We also show that in Hawaii there are three species of Pennaria, rather than one introduced species. Two of these species share haplotypes with specimens from distant locations such as Florida and Panama and may have been introduced, possibly from the Atlantic Ocean. A third species could either represent a lineage with nearly cosmopolitan distribution, or another introduced species. Our dataset refutes the widely accepted idea that only one lineage of P. disticha is present in Hawaii. On the contrary, P. disticha in Hawaii may be the outcome of multiple independent introductions of several morphologically undistinguishable cryptic lineages. Our results uncover an unsuspected complexity within the very common hydroid P. disticha, and highlight the need for routine use of molecular tools, such as DNA barcoding, to improve the identification and recognition of non-indigenous species.
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Affiliation(s)
- Maria Pia Miglietta
- Department of Marine Biology, Texas A&M at Galveston, Galveston, TX, 77553, United States of America
- * E-mail:
| | - Dean Odegard
- University of Notre Dame, Notre Dame, IN, 46556, United States of America
| | - Baptiste Faure
- Laboratoire d’Ecologie Marine, Université de la Réunion, St Denis, La Réunion, France
| | - Anuschka Faucci
- Department of Biology, University of Hawaii at Manoa, Honolulu, HI, 96822, United States of America
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Isolation and characterisation of 26 microsatellite loci from a widespread tropical hydrozoan, Macrorhynchia phoenicea (Leptothecata, Aglaopheniidae), and cross-amplification in closely related species. BIOCHEM SYST ECOL 2015. [DOI: 10.1016/j.bse.2015.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Schrey AW, Liebl AL, Richards CL, Martin LB. Range Expansion of House Sparrows (Passer domesticus) in Kenya: Evidence of Genetic Admixture and Human-Mediated Dispersal. J Hered 2013; 105:60-9. [DOI: 10.1093/jhered/est085] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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15
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Rasheed SB, Boots M, Frantz AC, Butlin RK. Population structure of the mosquito Aedes aegypti (Stegomyia aegypti) in Pakistan. MEDICAL AND VETERINARY ENTOMOLOGY 2013; 27:430-440. [PMID: 23662926 DOI: 10.1111/mve.12001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Eleven microsatellite markers were used to determine the genetic population structure and spread of Aedes aegypti (Stegomyia aegypti) (Diptera: Culicidae) in Pakistan using mosquitoes collected from 13 different cities. There is a single genetic cluster of Ae. aegypti in Pakistan with a pattern of isolation by distance within the population. The low level of isolation by distance suggests the long-range passive dispersal of this mosquito, which may be facilitated by the tyre trade in Pakistan. A decrease in genetic diversity from south to north suggests a recent spread of this mosquito from Karachi. A strong negative correlation between genetic distance and the quality of road connections shows that populations in cities connected by better road networks are less differentiated, which suggests the human-aided passive dispersal of Ae. aegypti in Pakistan. Dispersal on a large spatial scale may facilitate the strategy of introducing transgenic Ae. aegypti or intracellular bacteria such as Wolbachia to control the spread of dengue disease in Pakistan, but it also emphasizes the need for simple measures to control container breeding sites.
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Affiliation(s)
- S B Rasheed
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, U.K.Department of Zoology, University of Peshawar, Peshawar, PakistanDepartment of Biosciences, University of Exeter, Penryn, U.K. andInstitute of Zoology, University of Greifswald, Greifswald, Germany
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16
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Zhan A, Darling JA, Bock DG, Lacoursière-Roussel A, MacIsaac HJ, Cristescu ME. Complex genetic patterns in closely related colonizing invasive species. Ecol Evol 2012; 2:1331-46. [PMID: 22957143 PMCID: PMC3434944 DOI: 10.1002/ece3.258] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 03/16/2012] [Accepted: 03/16/2012] [Indexed: 11/30/2022] Open
Abstract
Anthropogenic activities frequently result in both rapidly changing environments and translocation of species from their native ranges (i.e., biological invasions). Empirical studies suggest that many factors associated with these changes can lead to complex genetic patterns, particularly among invasive populations. However, genetic complexities and factors responsible for them remain uncharacterized in many cases. Here, we explore these issues in the vase tunicate Ciona intestinalis (Ascidiacea: Enterogona: Cionidae), a model species complex, of which spA and spB are rapidly spreading worldwide. We intensively sampled 26 sites (N = 873) from both coasts of North America, and performed phylogenetic and population genetics analyses based on one mitochondrial fragment (cytochrome c oxidase subunit 3–NADH dehydrogenase subunit I, COX3-ND1) and eight nuclear microsatellites. Our analyses revealed extremely complex genetic patterns in both species on both coasts. We detected a contrasting pattern based on the mitochondrial marker: two major genetic groups in C. intestinalis spA on the west coast versus no significant geographic structure in C. intestinalis spB on the east coast. For both species, geo-graphically distant populations often showed high microsatellite-based genetic affinities whereas neighboring ones often did not. In addition, mitochondrial and nuclear markers provided largely inconsistent genetic patterns. Multiple factors, including random genetic drift associated with demographic changes, rapid selection due to strong local adaptation, and varying propensity for human-mediated propagule dispersal could be responsible for the observed genetic complexities.
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Affiliation(s)
- Aibin Zhan
- Great Lakes Institute for Environmental Research, University of Windsor401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
| | - John A Darling
- National Exposure Research Laboratory, US Environmental Protection Agency109 T. W. Alexander Drive, Durham, North Carolina 27711, USA
| | - Dan G Bock
- Great Lakes Institute for Environmental Research, University of Windsor401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
| | | | - Hugh J MacIsaac
- Great Lakes Institute for Environmental Research, University of Windsor401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
| | - Melania E Cristescu
- Great Lakes Institute for Environmental Research, University of Windsor401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada
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17
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Short KH, Petren K. Multimodal dispersal during the range expansion of the tropical house gecko Hemidactylus mabouia. Ecol Evol 2012; 1:181-90. [PMID: 22393494 PMCID: PMC3287299 DOI: 10.1002/ece3.18] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2011] [Revised: 07/18/2011] [Accepted: 07/19/2011] [Indexed: 11/30/2022] Open
Abstract
Dispersal influences both the ecological and evolutionary dynamics of range expansion. While some studies have demonstrated a role for human-mediated dispersal during invasion, the genetic effects of such dispersal remain to be understood, particularly in terrestrial range expansions. In this study, we investigated multimodal dispersal during the range expansion of the invasive gecko Hemidactylus mabouia in Florida using 12 microsatellite loci. We investigated dispersal patterns at the regional scale (metropolitan areas), statewide scale (state of Florida), and global scale (including samples from the native range). Dispersal was limited at the smallest, regional scale, within metropolitan areas, as reflected by the presence of genetic structure at this scale, which is in agreement with a previous study in this same invasion at even smaller spatial scales. Surprisingly, there was no detectable genetic structure at the intermediate statewide scale, which suggests dispersal is not limited across the state of Florida. There was evidence of genetic differentiation between Florida and other areas where H. mabouia occurs, so we concluded that at the largest scale, dispersal was limited. Humans likely contributed to patterns of dispersal at all three scales but in different ways. Infrequent low-volume dispersal has occurred within regions, frequent high-volume dispersal has occurred across the state, and infrequent long-distance dispersal has occurred among continents at the global scale. This study highlights the importance of considering different modes of dispersal at multiple spatial scales to understand the dynamics of invasion and range expansion.
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Affiliation(s)
- Kristen H Short
- Department of Biological Sciences, University of Cincinnati Cincinnati, Ohio 45221-0006
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Meek MH, Wintzer AP, Shepherd N, May B. Genetic diversity and reproductive mode in two non-native hydromedusae, Maeotias marginata and Moerisia sp., in the upper San Francisco Estuary, California. Biol Invasions 2012. [DOI: 10.1007/s10530-012-0279-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zhan A, Perepelizin PV, Ghabooli S, Paolucci E, Sylvester F, Sardiña P, Cristescu ME, MacIsaac HJ. Scale-dependent post-establishment spread and genetic diversity in an invading mollusc in South America. DIVERS DISTRIB 2012. [DOI: 10.1111/j.1472-4642.2012.00894.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Mant RC, Moggridge GD, Aldridge DC. Control of biofouling by Cordylophora caspia in freshwater using one-off, pulsed and intermittent dosing of chlorine: laboratory evaluation. BIOFOULING 2012; 28:433-440. [PMID: 22554274 DOI: 10.1080/08927014.2012.683865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Cordylophora caspia is a hydrozoan which causes biofouling in power plants and is an increasing problem in UK drinking water treatment works. Thermal control is not usually feasible without a ready source of hot water so laboratory experiments were conducted to assess whether using pulsed doses of chlorine is an alternative solution. C. caspia polyps disintegrated after a single 20 min dose (the length of one backwash cycle in water treatment work filter beds) of 2.5 ppm chlorine. Without further treatment colonies regenerated within 3 days, but repeated dosing with chlorine for 20 min each day inhibited this regeneration. The resistance of surviving colonies to chlorine increased over time, although colony size and polyp regeneration continued to fall. These results suggest pulsed treatment with chlorinated backwashes at 2 ppm could be used to control C. caspia biofouling in rapid gravity filters and this may have relevance to other settings where thermal control is not feasible.
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Affiliation(s)
- R C Mant
- Department of Zoology, University of Cambridge, Cambridge, UK.
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Short KH, Petren K. Fine-scale genetic structure arises during range expansion of an invasive gecko. PLoS One 2011; 6:e26258. [PMID: 22053186 PMCID: PMC3203895 DOI: 10.1371/journal.pone.0026258] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Accepted: 09/23/2011] [Indexed: 11/18/2022] Open
Abstract
Processes of range expansion are increasingly important in light of current concerns about invasive species and range shifts due to climate change. Theoretical studies suggest that genetic structuring may occur during range expansion. Ephemeral genetic structure can have important evolutionary implications, such as propagating genetic changes along the wave front of expansion, yet few studies have shown evidence of such structure. We tested the hypothesis that genetic structure arises during range expansion in Hemidactylus mabouia, a nocturnal African gecko recently introduced to Florida, USA. Twelve highly variable microsatellite loci were used to screen 418 individuals collected from 43 locations from four sampling sites across Florida, representing a gradient from earlier (∼1990s) to very recent colonization. We found earlier colonized locations had little detectable genetic structure and higher allelic richness than more recently colonized locations. Genetic structuring was pronounced among locations at spatial scales of tens to hundreds of meters near the leading edge of range expansion. Despite the rapid pace of range expansion in this introduced gecko, dispersal is limited among many suitable habitat patches. Fine-scale genetic structure is likely the result of founder effects during colonization of suitable habitat patches. It may be obscured over time and by scale-dependent modes of dispersal. Further studies are needed to determine if such genetic structure affects adaptation and trait evolution in range expansions and range shifts.
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Affiliation(s)
- Kristen Harfmann Short
- Department of Biological Sciences, University of Cincinnati, Cincinnati, Ohio, United States of America.
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Bronnenhuber JE, Dufour BA, Higgs DM, Heath DD. Dispersal strategies, secondary range expansion and invasion genetics of the nonindigenous round goby, Neogobius melanostomus, in Great Lakes tributaries. Mol Ecol 2011; 20:1845-59. [PMID: 21492265 DOI: 10.1111/j.1365-294x.2011.05030.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dispersal strategies are important mechanisms underlying the spatial distribution and colonizing ability of all mobile species. In the current study, we use highly polymorphic microsatellite markers to evaluate local dispersal and colonization dynamics of the round goby (Neogobius melanostomus), an aquatic invader expanding its range from lake to river environments in its introduced North American range. Genetic structure, genotype assignment and genetic diversity were compared among 1262 round gobies from 20 river and four lake sites in three Great Lakes tributaries. Our results indicate that a combination of short-distance diffusion and long-distance dispersal, collectively referred to as 'stratified dispersal', is facilitating river colonization. Colonization proceeded upstream yearly (approximately 500 m/year; 2005-2009) in one of two temporal replicates while genetic structure was temporally stable. Contiguous dispersal from the lake was observed in all three rivers with a substantial portion of river fish (7.3%) identified as migrants. Genotype assignment indicated a separate introduction occurred upstream of the invasion front in one river. Genetic diversity was similar and relatively high among lake and recently colonized river populations, indicating that founder effects are mitigated through a dual-dispersal strategy. The remarkable success of round goby as an aquatic invader stresses the need for better diffusion models of secondary range expansion for presumably sessile invasive species.
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Affiliation(s)
- Jennifer E Bronnenhuber
- Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Ave. Windsor, ON N9B 3P4, Canada
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Bock DG, Zhan A, Lejeusne C, MacIsaac HJ, Cristescu ME. Looking at both sides of the invasion: patterns of colonization in the violet tunicate Botrylloides violaceus. Mol Ecol 2010; 20:503-16. [PMID: 21199029 DOI: 10.1111/j.1365-294x.2010.04971.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Understanding the ecological and evolutionary forces that shape the genetic structure of invasive populations and facilitate their expansion across a large spectrum of environments is critical for the prediction of spread and management of ongoing invasions. Here, we study the dynamics of postestablishment colonization in the colonial ascidian Botrylloides violaceus, a notorious marine invader. After its initial introduction from the Northwest Pacific, B. violaceus spread rapidly along the Pacific and Atlantic coasts of North America, impacting both aquaculture facilities and natural ecosystems. We compare genetic diversity and patterns of gene flow among 25 populations (N=679) from the West and East coasts, and evaluate the contribution of sexual vs. asexual reproduction to this species' invasion success using data from the mitochondrial cytochrome c oxidase subunit I (COI) gene and 13 nuclear polymorphic microsatellite loci. Our results reveal contrasting patterns of spread in the coastal waters of North America. While the West coast was colonized by noncontiguous (long-distance) dispersal, the East coast invasion appears to have occurred through contiguous (stepping-stone) spread. Molecular data further indicate that although dispersal in colonial ascidians is predominantly achieved through sexually produced propagules, aquaculture practices such as high-pressure washing can facilitate fragmentation and potentially exacerbate infestations and spread via asexual propagules. The results presented here suggest that caution should be used against the general assumption that all invasions, even within a single species, exhibit similar patterns of colonization, as highly contrasting dynamics may transpire in different invaded ranges.
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Affiliation(s)
- D G Bock
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada.
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Vandewoestijne S, Van Dyck H. Population genetic differences along a latitudinal cline between original and recently colonized habitat in a butterfly. PLoS One 2010; 5:e13810. [PMID: 21072197 PMCID: PMC2972211 DOI: 10.1371/journal.pone.0013810] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Accepted: 09/21/2010] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Past and current range or spatial expansions have important consequences on population genetic structure. Habitat-use expansion, i.e. changing habitat associations, may also influence genetic population parameters, but has been less studied. Here we examined the genetic population structure of a Palaeartic woodland butterfly Pararge aegeria (Nymphalidae) which has recently colonized agricultural landscapes in NW-Europe. Butterflies from woodland and agricultural landscapes differ in several phenotypic traits (including morphology, behavior and life history). We investigated whether phenotypic divergence is accompanied by genetic divergence between populations of different landscapes along a 700 km latitudinal gradient. METHODOLOGY/PRINCIPAL FINDINGS Populations (23) along the latitudinal gradient in both landscape types were analyzed using microsatellite and allozyme markers. A general decrease in genetic diversity with latitude was detected, likely due to post-glacial colonization effects. Contrary to expectations, agricultural landscapes were not less diverse and no significant bottlenecks were detected. Nonetheless, a genetic signature of recent colonization is reflected in the absence of clinal genetic differentiation within the agricultural landscape, significantly lower gene flow between agricultural populations (3.494) than between woodland populations (4.183), and significantly higher genetic differentiation between agricultural (0.050) than woodland (0.034) pairwise comparisons, likely due to multiple founder events. Globally, the genetic data suggest multiple long distance dispersal/colonization events and subsequent high intra- and inter-landscape gene flow in this species. Phosphoglucomutase deviated from other enzymes and microsatellite markers, and hence may be under selection along the latitudinal gradient but not between landscape types. Phenotypic divergence was greater than genetic divergence, indicating directional selection on some flight morphology traits. MAIN CONCLUSIONS/SIGNIFICANCE Clinal differentiation characterizes the population structure within the original woodland habitat. Genetic signatures of recent habitat expansion remain, notwithstanding high gene flow. After differentiation through drift was excluded, both latitude and landscape were significant factors inducing spatially variable phenotypic variation.
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Affiliation(s)
- Sofie Vandewoestijne
- Biodiversity Research Centre, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium.
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Wilson AG, Arcese P, Chan YL, Patten MA. Micro-spatial genetic structure in song sparrows (Melospiza melodia). CONSERV GENET 2010. [DOI: 10.1007/s10592-010-0134-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhan A, Macisaac HJ, Cristescu ME. Invasion genetics of the Ciona intestinalis species complex: from regional endemism to global homogeneity. Mol Ecol 2010; 19:4678-94. [PMID: 20875067 DOI: 10.1111/j.1365-294x.2010.04837.x] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Determining the degree of population connectivity and investigating factors driving genetic exchange at various geographical scales are essential to understanding population dynamics and spread potential of invasive species. Here, we explore these issues in the highly invasive vase tunicate, Ciona intestinalis, a species whose invasion history has been obscured by its poorly understood taxonomy and population genetics. Recent phylogenetic and comparative genomic studies suggest that C. intestinalis is a cryptic species complex consisting of at least three species. We reconstructed phylogenies based on both mitochondrial (cytochrome c oxidase subunit 3--NADH dehydrogenase subunit 1 region and NADH dehydrogenase subunit 4 gene) and nuclear (internal transcribed spacer 1) sequences, results of which support four major phylogroups corresponding to the previously reported spA, spB and Ciona spp. (spC) as well as an undescribed cryptic species (spD). While spC and spD remain restricted to their native ranges in the Mediterranean Sea and Black Sea, respectively, the highly invasive species (spA and spB) have disjunct global distributions. Despite extensive interspecific divergences, we identified low phylogeographical structure within these two invasive species. Haplotype network analyses revealed comparatively limited mutation steps among haplotypes within each species. Population genetic analyses based on two mtDNA fragments and eight unlinked microsatellites illustrated relatively low population differentiation and high population connectivity at both regional and continental scales in the two invasive species. Human-mediated dispersal coupled with a high potential for natural dispersal is probably responsible for the observed genetic homogeneity.
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Affiliation(s)
- Aibin Zhan
- Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, Canada.
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Abbott CL, Ebert D, Tabata A, Therriault TW. Twelve microsatellite markers in the invasive tunicate, Didemnum vexillum, isolated from low genome coverage 454 pyrosequencing reads. CONSERV GENET RESOUR 2010. [DOI: 10.1007/s12686-010-9294-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Banks SC, Ling SD, Johnson CR, Piggott MP, Williamson JE, Beheregaray LB. Genetic structure of a recent climate change-driven range extension. Mol Ecol 2010; 19:2011-24. [PMID: 20406383 DOI: 10.1111/j.1365-294x.2010.04627.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The life-history strategies of some species make them strong candidates for rapid exploitation of novel habitat under new climate regimes. Some early-responding species may be considered invasive, and negatively impact on 'naïve' ecosystems. The barrens-forming sea urchin Centrostephanus rodgersii is one such species, having a high dispersal capability and a high-latitude range margin limited only by a developmental temperature threshold. Within this species' range in eastern Australian waters, sea temperatures have increased at greater than double the global average rate. The coinciding poleward range extension of C. rodgersii has caused major ecological changes, threatening reef biodiversity and fisheries productivity. We investigated microsatellite diversity and population structure associated with range expansion by this species. Generalized linear model analyses revealed no reduction in genetic diversity in the newly colonized region. A 'seascape genetics' analysis of genetic distances found no spatial genetic structure associated with the range extension. The distinctive genetic characteristic of the extension zone populations was reduced population-specific F(ST), consistent with very rapid population expansion. Demographic and genetic simulations support our inference of high connectivity between pre- and post-extension zones. Thus, the range shift appears to be a poleward extension of the highly-connected rangewide population of C. rodgersii. This is consistent with advection of larvae by the intensified warm water East Australian current, which has also increased Tasmanian Sea temperatures above the species' lower developmental threshold. Thus, ocean circulation changes have improved the climatic suitability of novel habitat for C. rodgersii and provided the supply of recruits necessary for colonization.
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Affiliation(s)
- Sam C Banks
- Department of Biological Sciences, Macquarie University, Sydney, 2109 NSW, Australia.
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