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Johnson NA, Henderson AR, Jones JW, Beaver CE, Ahlstedt SA, Dinkins GR, Eckert NL, Endries MJ, Garner JT, Harris JL, Hartfield PD, Hubbs DW, Lane TW, McGregor MA, Moles KR, Morrison CL, Wagner MD, Williams JD, Smith CH. Glacial vicariance and secondary contact shape demographic histories in a freshwater mussel species complex. J Hered 2024; 115:72-85. [PMID: 38015800 DOI: 10.1093/jhered/esad075] [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: 06/20/2023] [Revised: 10/16/2023] [Accepted: 11/27/2023] [Indexed: 11/30/2023] Open
Abstract
Characterizing the mechanisms influencing the distribution of genetic variation in aquatic species can be difficult due to the dynamic nature of hydrological landscapes. In North America's Central Highlands, a complex history of glacial dynamics, long-term isolation, and secondary contact have shaped genetic variation in aquatic species. Although the effects of glacial history have been demonstrated in many taxa, responses are often lineage- or species-specific and driven by organismal ecology. In this study, we reconstruct the evolutionary history of a freshwater mussel species complex using a suite of mitochondrial and nuclear loci to resolve taxonomic and demographic uncertainties. Our findings do not support Pleurobema rubrum as a valid species, which is proposed for listing as threatened under the U.S. Endangered Species Act. We synonymize P. rubrum under Pleurobema sintoxia-a common and widespread species found throughout the Mississippi River Basin. Further investigation of patterns of genetic variation in P. sintoxia identified a complex demographic history, including ancestral vicariance and secondary contact, within the Eastern Highlands. We hypothesize these patterns were shaped by ancestral vicariance driven by the formation of Lake Green and subsequent secondary contact after the last glacial maximum. Our inference aligns with demographic histories observed in other aquatic taxa in the region and mirrors patterns of genetic variation of a freshwater fish species (Erimystax dissimilis) confirmed to serve as a parasitic larval host for P. sintoxia. Our findings directly link species ecology to observed patterns of genetic variation and may have significant implications for future conservation and recovery actions of freshwater mussels.
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Affiliation(s)
- Nathan A Johnson
- U.S. Geological Survey, Wetland and Aquatic Research Center, Gainesville, FL, United States
| | - Andrew R Henderson
- U.S. Fish and Wildlife Service, Ecological Services, Asheville, NC, United States
| | - Jess W Jones
- U.S. Fish and Wildlife Service, Virginia Tech University, Blacksburg, VA, United States
| | - Caitlin E Beaver
- U.S. Geological Survey, Wetland and Aquatic Research Center, Gainesville, FL, United States
| | - Steven A Ahlstedt
- McClung Museum of Natural History and Culture, University of Tennessee, Knoxville, TN, United States
| | - Gerald R Dinkins
- McClung Museum of Natural History and Culture, University of Tennessee, Knoxville, TN, United States
| | - Nathan L Eckert
- U.S. Fish and Wildlife Service, Neosho National Fish Hatchery, Neosho, MO, United States
| | - Mark J Endries
- U.S. Fish and Wildlife Service, Ecological Services, Asheville, NC, United States
| | - Jeffrey T Garner
- Alabama Division of Wildlife and Freshwater Fisheries, Florence, AL, United States
| | - John L Harris
- Arkansas State University Museum of Zoology, Jonesboro, AR, United States
| | - Paul D Hartfield
- U.S. Fish and Wildlife Service, Ecological Services, Jackson, MS, United States
| | - Don W Hubbs
- DJH Environmental Services, Camden, TN, United States
| | - Timothy W Lane
- Virginia Department of Wildlife Resources, Marion, VA, United States
| | - Monte A McGregor
- Kentucky Department of Fish and Wildlife Resources, Frankfort, KY, United States
| | - Kendall R Moles
- Arkansas Game and Fish Commission, Benton, AR, United States
| | - Cheryl L Morrison
- U.S. Geological Survey, Eastern Ecological Science Center, Kearneysville, WV, United States
| | - Matthew D Wagner
- U.S. Fish and Wildlife Service, Ecological Services, Jackson, MS, United States
| | - James D Williams
- Florida Museum, University of Florida, Gainesville, FL, United States
| | - Chase H Smith
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, United States
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Bieler R. Isaac Lea's (1792–1886) Substitutions and Other Modifications of His Own Names of Molluscan Species. MALACOLOGIA 2021. [DOI: 10.4002/040.064.0101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Rüdiger Bieler
- Negaunee Integrative Research Center, Field Museum of Natural History, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, U.S.A.
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3
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Kilikowska A, Mioduchowska M, Wysocka A, Kaczmarczyk-Ziemba A, Rychlińska J, Zając K, Zając T, Ivinskis P, Sell J. The Patterns and Puzzles of Genetic Diversity of Endangered Freshwater Mussel Unio crassus Philipsson, 1788 Populations from Vistula and Neman Drainages (Eastern Central Europe). Life (Basel) 2020; 10:life10070119. [PMID: 32708316 PMCID: PMC7400583 DOI: 10.3390/life10070119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/12/2020] [Accepted: 07/16/2020] [Indexed: 11/16/2022] Open
Abstract
Mussels of the family Unionidae are important components of freshwater ecosystems. Alarmingly, the International Union for Conservation of Nature and Natural Resources Red List of Threatened Species identifies almost 200 unionid species as extinct, endangered, or threatened. Their decline is the result of human impact on freshwater habitats, and the decrease of host fish populations. The Thick Shelled River Mussel Unio crassus Philipsson, 1788 is one of the examples that has been reported to show a dramatic decline of populations. Hierarchical organization of riverine systems is supposed to reflect the genetic structure of populations inhabiting them. The main goal of this study was an assessment of the U. crassus genetic diversity in river ecosystems using hierarchical analysis. Different molecular markers, the nuclear ribosomal internal transcribed spacer ITS region, and mitochondrial DNA genes (cox1 and ndh1), were used to examine the distribution of U. crassus among-population genetic variation at multiple spatial scales (within rivers, among rivers within drainages, and between drainages of the Neman and Vistula rivers). We found high genetic structure between both drainages suggesting that in the case of the analyzed U. crassus populations we were dealing with at least two different genetic units. Only about 4% of the mtDNA variation was due to differences among populations within drainages. However, comparison of population differentiation within drainages for mtDNA also showed some genetic structure among populations within the Vistula drainage. Only one haplotype was shared among all Polish populations whereas the remainder were unique for each population despite the hydrological connection. Interestingly, some haplotypes were present in both drainages. In the case of U. crassus populations under study, the Mantel test revealed a relatively strong relationship between genetic and geographical distances. However, in detail, the pattern of genetic diversity seems to be much more complicated. Therefore, we suggest that the observed pattern of U. crassus genetic diversity distribution is shaped by both historical and current factors i.e. different routes of post glacial colonization and history of drainage systems, historical gene flow, and more recent habitat fragmentation due to anthropogenic factors.
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Affiliation(s)
- Adrianna Kilikowska
- Department of Genetics and Biosystematics, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland; (A.K.); (M.M.); (A.W.); (A.K.-Z.); (J.R.); (J.S.)
| | - Monika Mioduchowska
- Department of Genetics and Biosystematics, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland; (A.K.); (M.M.); (A.W.); (A.K.-Z.); (J.R.); (J.S.)
- Department of Marine Plankton Research, University of Gdansk, Piłsudskiego 46, 81-378 Gdynia, Poland
| | - Anna Wysocka
- Department of Genetics and Biosystematics, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland; (A.K.); (M.M.); (A.W.); (A.K.-Z.); (J.R.); (J.S.)
| | - Agnieszka Kaczmarczyk-Ziemba
- Department of Genetics and Biosystematics, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland; (A.K.); (M.M.); (A.W.); (A.K.-Z.); (J.R.); (J.S.)
| | - Joanna Rychlińska
- Department of Genetics and Biosystematics, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland; (A.K.); (M.M.); (A.W.); (A.K.-Z.); (J.R.); (J.S.)
| | - Katarzyna Zając
- Institute of Nature Conservation, Polish Academy of Sciences, 31-120 Kraków, Poland;
- Correspondence:
| | - Tadeusz Zając
- Institute of Nature Conservation, Polish Academy of Sciences, 31-120 Kraków, Poland;
| | - Povilas Ivinskis
- Nature Research Centre, Akademijos 2, LT-08412 Vilnius, Lithuania;
| | - Jerzy Sell
- Department of Genetics and Biosystematics, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland; (A.K.); (M.M.); (A.W.); (A.K.-Z.); (J.R.); (J.S.)
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Smith CH, Pfeiffer JM, Johnson NA. Comparative phylogenomics reveal complex evolution of life history strategies in a clade of bivalves with parasitic larvae (Bivalvia: Unionoida: Ambleminae). Cladistics 2020; 36:505-520. [DOI: 10.1111/cla.12423] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2020] [Indexed: 01/27/2023] Open
Affiliation(s)
| | - John M. Pfeiffer
- National Museum of Natural History Smithsonian Institution Washington DC USA
| | - Nathan A. Johnson
- U.S. Geological Survey, Wetland and Aquatic Research Center 7920 NW 71st Street Gainesville FL32653 USA
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Inoue K, Harris JL, Robertson CR, Johnson NA, Randklev CR. A comprehensive approach uncovers hidden diversity in freshwater mussels (Bivalvia: Unionidae) with the description of a novel species. Cladistics 2020; 36:88-113. [PMID: 34618970 DOI: 10.1111/cla.12386] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2019] [Indexed: 11/30/2022] Open
Abstract
Major geological processes have shaped biogeographical patterns of riverine biota. The Edwards Plateau of central Texas, USA, exhibits unique aquatic communities and endemism, including several species of freshwater mussels. Lampsilis bracteata (Gould, 1855) is endemic to the Edwards Plateau region; however, its phylogenetic relationship with other species in the Gulf coastal rivers and Mississippi River basin is unknown. We evaluated phylogenetic relationships, shell morphologies and soft anatomy characters of L. bracteata and a closely related congener, Lampsilis hydiana (Lea, 1838) throughout their ranges. Our results showed the presence of an undescribed species: Lampsilis bergmanni sp.n. Lampsilis bracteata and L. bergmanni sp.n. share similar shell morphologies and soft anatomy characters; however, they are genetically distinct. Geological processes, such as faulting and sea-level changes during the Miocene to Pliocene, are likely to have facilitated diversification of Lampsilis species, resulting in isolation of L. bracteata on the Edwards Plateau and diversification between L. bergmanni sp.n. and L. hydiana. We conclude that L. bracteata range is restricted to the Colorado River basin, whereas L. bergmanni sp.n. occurs only in upstream reaches of the Guadalupe River basin. Conservation actions are warranted for both species due to their restricted distributions and potential anthropogenic threats.
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Affiliation(s)
- Kentaro Inoue
- Texas A&M Natural Resources Institute, Texas A&M AgriLife Research Center at Dallas, Dallas, TX, 75252, USA.,Daniel P. Haerther Center for Research and Conservation, John G. Shedd Aquarium, 1200 South Lake Shore Drive, Chicago, IL, 60605, USA
| | - John L Harris
- Department of Biological Sciences, Arkansas State University, Jonesboro, AR, 72467, USA
| | - Clinton R Robertson
- River Studies Program, Texas Parks and Wildlife Department, San Marcos, TX, 78667, USA
| | - Nathan A Johnson
- Wetland and Aquatic Research Center, U.S. Geological Survey, Gainesville, FL, 32653, USA
| | - Charles R Randklev
- Texas A&M Natural Resources Institute, Texas A&M AgriLife Research Center at Dallas, Dallas, TX, 75252, USA
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Smith CH, Johnson NA, Inoue K, Doyle RD, Randklev CR. Integrative taxonomy reveals a new species of freshwater mussel, Potamilus streckersoni sp. nov. (Bivalvia: Unionidae): implications for conservation and management. SYST BIODIVERS 2019. [DOI: 10.1080/14772000.2019.1607615] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Chase H. Smith
- Biology Department, Baylor University, Waco, TX, 76798, USA
- US Geological Survey, Wetland and Aquatic Research Center, 7920 NW 71st Street, Gainesville, FL, 32653, USA
| | - Nathan A. Johnson
- US Geological Survey, Wetland and Aquatic Research Center, 7920 NW 71st Street, Gainesville, FL, 32653, USA
| | - Kentaro Inoue
- Texas A&M Natural Resources Institute, Texas A&M AgriLife Research Center at Dallas, Dallas, TX, 75252, USA
| | | | - Charles R. Randklev
- Texas A&M Natural Resources Institute, Texas A&M AgriLife Research Center at Dallas, Dallas, TX, 75252, USA
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7
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Keogh SM, Simons AM. Molecules and morphology reveal 'new' widespread North American freshwater mussel species (Bivalvia: Unionidae). Mol Phylogenet Evol 2019; 138:182-192. [PMID: 31129350 DOI: 10.1016/j.ympev.2019.05.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 05/10/2019] [Accepted: 05/22/2019] [Indexed: 10/26/2022]
Abstract
In the Family Unionidae, the greatest radiation of freshwater mussels, malacologists have been misled by extreme intraspecific shell variation and conversely interspecific conchological stasis or convergence. We characterized the genetic and morphological diversity of two phenotypes of Lampsilis teres from specimens (n = 108) collected across its distribution using geometric and traditional morphometrics and multilocus molecular phylogenetics to test the hypothesis that phenotypes represent separate species. Results from our morphometric and molecular phylogenetic analyses unanimously indicate that L. teres sensu lato is made up of two divergent, widespread species with overlapping distributions. We describe a new species and provide a revised description of L. teres sensu stricto. We use morphometrics and machine-learning classification algorithms to test if shell morphology alone can be used to discriminate between these species. Classification percentages of 97.02% and 93.86% demonstrate that shell morphology is highly informative for species identification. This study highlights our lack of understanding of species diversity of freshwater mussels and the importance of multiple characters and quantitative approaches to species delimitation.
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Affiliation(s)
- Sean M Keogh
- Conservation Sciences Graduate Program, University of Minnesota, 135B Skok Hall, 2003 Upper Buford Circle, St Paul, MN 55108, USA; Bell Museum of Natural History, University of Minnesota, 100 Ecology, 1987 Upper Buford Circle, St. Paul, MN 55108, USA.
| | - Andrew M Simons
- Bell Museum of Natural History, University of Minnesota, 100 Ecology, 1987 Upper Buford Circle, St. Paul, MN 55108, USA; Department of Fisheries, Wildlife and Conservation Biology, University of Minnesota, 135B Skok Hall, 2003 Upper Buford Circle, St Paul, MN 55108, USA
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8
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Johnson NA, Smith CH, Pfeiffer JM, Randklev CR, Williams JD, Austin JD. Integrative taxonomy resolves taxonomic uncertainty for freshwater mussels being considered for protection under the U.S. Endangered Species Act. Sci Rep 2018; 8:15892. [PMID: 30367102 PMCID: PMC6203750 DOI: 10.1038/s41598-018-33806-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 10/07/2018] [Indexed: 11/30/2022] Open
Abstract
Objectively delimiting species boundaries remains an important challenge in systematics and becomes urgent when unresolved taxonomy complicates conservation and recovery efforts. We examined species boundaries in the imperiled freshwater mussel genus Cyclonaias (Bivalvia: Unionidae) using morphometrics, molecular phylogenetics, and multispecies coalescent models to help guide pending conservation assessments and legislative decisions. Congruence across multiple lines of evidence indicated that current taxonomy overestimates diversity in the C. pustulosa species complex. The only genetically and morphologically diagnosable species in the C. pustulosa species complex were C. pustulosa and C. succissa and we consider C. aurea, C. houstonensis, C. mortoni, and C. refulgens to be synonyms of C. pustulosa. In contrast, all three species in the C. nodulata complex (C. necki, C. nodulata, and C. petrina) were genetically, geographically, and morphologically diagnosable. Our findings have important conservation and management implications, as three nominal species (C. aurea, C. houstonensis, and C. petrina) are being considered for protection under the Endangered Species Act.
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Affiliation(s)
- Nathan A Johnson
- U.S. Geological Survey, Wetland and Aquatic Research Center, Gainesville, FL, 32653, USA.
| | - Chase H Smith
- U.S. Geological Survey, Wetland and Aquatic Research Center, Gainesville, FL, 32653, USA.,Baylor University, Biology Department, Waco, TX, 76798, USA
| | - John M Pfeiffer
- University of Florida, Florida Museum, Gainesville, FL, 32611, USA
| | - Charles R Randklev
- Texas A&M Natural Resources Institute and AgriLife Research Center, Dallas, TX, 75252, USA
| | - James D Williams
- University of Florida, Florida Museum, Gainesville, FL, 32611, USA
| | - James D Austin
- Wildlife Ecology and Conservation, University of Florida, Gainesville, FL, 32601, USA
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Archambault JM, Cope WG, Kwak TJ. Chasing a changing climate: Reproductive and dispersal traits predict how sessile species respond to global warming. DIVERS DISTRIB 2018. [DOI: 10.1111/ddi.12740] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
| | - W. Gregory Cope
- Department of Applied Ecology; North Carolina State University; Raleigh NC USA
| | - Thomas J. Kwak
- North Carolina Cooperative Fish and Wildlife Research Unit; U.S. Geological Survey; Raleigh NC USA
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10
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Inoue K, Hayes DM, Harris JL, Johnson NA, Morrison CL, Eackles MS, King TL, Jones JW, Hallerman EM, Christian AD, Randklev CR. The Pleurobemini (Bivalvia : Unionida) revisited: molecular species delineation using a mitochondrial DNA gene reveals multiple conspecifics and undescribed species. INVERTEBR SYST 2018. [DOI: 10.1071/is17059] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The Pleurobemini (Bivalvia: Unionida) represent approximately one-third of freshwater mussel diversity in North America. Species identification within this group is challenging due to morphological convergence and phenotypic plasticity. Accurate species identification, including characterisation of currently unrecognised taxa, is required to develop effective conservation strategies because many species in the group are imperiled. We examined 575 cox1 sequences from 110 currently recognised species (including 13 Fusconaia and 21 Pleurobema species) to understand phylogenetic relationships among pleurobemine species (mainly Fusconaia and Pleurobema) and to delineate species boundaries. The results of phylogenetic analyses showed no geographic structure within widespread species and illustrated a close relationship between Elliptio lanceolata and Parvaspina collina. Constraint tests supported monophyly of the genera Fusconaia and Pleurobema, including the subgenus P. (Sintoxia). Furthermore, results revealed multiple conspecifics, including P. hanleyianum and P. troschelianum, P. chattanoogaense and P. decisum, P. clava and P. oviforme, P. rubrum and P. sintoxia, F. askewi and F. lananensis, and F. cerina and F. flava. Species delimitation analyses identified three currently unrecognised taxa (two in Fusconaia and one in Pleurobema). Further investigation using additional genetic markers and other lines of evidence (e.g. morphology, life history, ecology) are necessary before any taxonomic changes are formalised.
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