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dc.contributor.authorTitus, Benjamin M.
dc.contributor.authorDaly, Marymegan
dc.contributor.authorHamilton, Natalie
dc.contributor.authorBerumen, Michael L.
dc.contributor.authorBaeza, J. Antonio
dc.date.accessioned2018-05-14T13:37:06Z
dc.date.available2018-05-14T13:37:06Z
dc.date.issued2018-04-27
dc.identifier.citationTitus BM, Daly M, Hamilton N, Berumen ML, Baeza JA (2018) Global species delimitation and phylogeography of the circumtropical “sexy shrimp” Thor amboinensis reveals a cryptic species complex and secondary contact in the Indo-West Pacific. Journal of Biogeography. Available: http://dx.doi.org/10.1111/jbi.13231.
dc.identifier.issn0305-0270
dc.identifier.doi10.1111/jbi.13231
dc.identifier.urihttp://hdl.handle.net/10754/627849
dc.description.abstractAim The “sexy shrimp” Thor amboinensis is currently considered a single circumtropical species. However, the tropical oceans are partitioned by hard and soft barriers to dispersal, providing ample opportunity for allopatric speciation. Herein, we test the null hypothesis that T. amboinensis is a single global species, reconstruct its global biogeographical history, and comment on population-level patterns throughout the Tropical Western Atlantic. Location Coral reefs in all tropical oceans. Methods Specimens of Thor amboinensis were obtained through field collection and museum holdings. We used one mitochondrial (COI) and two nuclear (NaK, enolase) gene fragments for global species delimitation and phylogenetic analyses (n = 83 individuals, 30 sample localities), while phylogeographical reconstruction in the TWA was based on COI only (n = 303 individuals, 10 sample localities). Results We found evidence for at least five cryptic lineages (9%–22% COI pairwise sequence divergence): four in the Indo-West Pacific and one in the Tropical Western Atlantic. Phylogenetic reconstruction revealed that endemic lineages from Japan and the South Central Pacific are more closely related to the Tropical Western Atlantic lineage than to a co-occurring lineage that is widespread throughout the Indo-West Pacific. Concatenated and species tree phylogenetic analyses differ in the placement of an endemic Red Sea lineage and suggest alternate dispersal pathways into the Atlantic. Phylogeographical reconstruction throughout the Tropical Western Atlantic reveals little genetic structure over more than 3,000 km. Main conclusions Thor amboinensis is a species complex that has undergone a series of allopatric speciation events and whose members are in secondary contact in the Indo-West Pacific. Nuclear- and mitochondrial- gene phylogenies show evidence of introgression between lineages inferred to have been separated more than 20 Ma. Phylogenetic discordance between multi-locus analyses suggest that T. amboinensis originated in the Tethys sea and dispersed into the Atlantic and Indo-West Pacific through the Tethys seaway or, alternatively, originated in the Indo-West Pacific and dispersed into the Atlantic around South Africa. Population-level patterns in the Caribbean indicate extensive gene flow across the region.
dc.description.sponsorshipWe thank the Florida Museum of Natural History and the California Academy of Science for specimens used in this study. We are grateful to Dan Exton, Anna Klompen, Jason Macrander, Todd Melman, Spencer Palombit, Gustav Paulay, Estefanía Rodríguez, Nuno Simoes, Tane Sinclair-Taylor, Jill Titus, Eric Witt, Clay Vondriska, and the Operation Wallacea dive staff for assistance in obtaining specimens and sequence data. Specimens were collected from throughout the Tropical Western Atlantic under permits: SE/A-88-15, PPF/DGOPA-127/14, CZ01/9/9, FKNMS-2012-155, SAL-12-1432A-SR, STT037-14, 140408, MAR/FIS/17, and 19985. This research was supported by funding from a National Science Foundation-Doctoral Dissertation Improvement Grant DEB-1601645, the Florida Fish and Wildlife Conservation Commission, Operation Wallacea, American Philosophical Society, International Society for Reef Studies Graduate Fellowship, PADI Foundation Grant, and American Museum of Natural History Lerner Gray Funds awarded to BMT, and National Geographic Explorers grant awarded to JAB. Additional funding was provided through the Undergraduate Research Office at The Ohio State University to NH, the King Abdullah University of Science and Technology (award CRG-1-2012-BER-002 and baseline research funds to MLB), and by the Trautman Fund, The Ohio State University. Comments from two anonymous reviewers greatly improved this manuscript.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/full/10.1111/jbi.13231
dc.relation.urlhttps://rss.onlinelibrary.wiley.com/doi/am-pdf/10.1111/jbi.13231
dc.rightsArchived with thanks to Journal of Biogeography
dc.rightsThis file is an open access version redistributed from: https://rss.onlinelibrary.wiley.com/doi/am-pdf/10.1111/jbi.13231
dc.subjectallopatric speciation
dc.subjectcoral reefs
dc.subjectcrustacean
dc.subjectcryptic species
dc.subjectgene flow
dc.subjectintrogression
dc.titleGlobal species delimitation and phylogeography of the circumtropical ‘sexy shrimp’ Thor amboinensis reveals a cryptic species complex and secondary contact in the Indo-West Pacific
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentMarine Science Program
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.identifier.journalJournal of Biogeography
dc.eprint.versionPost-print
dc.contributor.institutionDivision of Invertebrate Zoology; American Museum of Natural History; New York NY USA
dc.contributor.institutionDepartment of Evolution, Ecology, and Organismal Biology; The Ohio State University; Columbus OH USA
dc.contributor.institutionDepartamento de Biología Marina; Facultad de Ciencias del Mar; Universidad Católica del Norte; Coquimbo Chile
dc.contributor.institutionSmithsonian Marine Station; Fort Pierce FL USA
dc.contributor.institutionDepartment of Biological Sciences; Clemson University; Clemson SC USA
kaust.personBerumen, Michael L.
kaust.grant.numberCRG-1-2012-BER-002
refterms.dateFOA2021-06-22T07:50:22Z
dc.date.published-online2018-04-27
dc.date.published-print2018-06


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