Return of the ghosts of dispersal past: Historical spread and contemporary gene flow in the blue sea star Linckia laevigata

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dc.citation.issue1
dc.citation.volume90
dc.contributor.authorCrandall ED
dc.contributor.authorTreml EA
dc.contributor.authorLiggins L
dc.contributor.authorGleeson L
dc.contributor.authorYasuda N
dc.contributor.authorBarber PH
dc.contributor.authorWörheide G
dc.contributor.authorRiginos C
dc.date.available2014-01-01
dc.date.issued2014-01-01
dc.description.abstractMarine animals inhabiting the Indian and Pacific oceans have some of the most extensive species ranges in the world, sometimes spanning over half the globe. These Indo-Pacific species present a challenge for study with both geographic scope and sampling density as limiting factors. Here, we augment and aggregate phylogeographic sampling of the iconic blue sea star, Linckia laevigata Linnaeus, 1758, and present one of the most geographically comprehensive genetic studies of any Indo-Pacific species to date, sequencing 392 base pairs of mitochondrial COI from 791 individuals from 38 locations spanning over 14,000 km. We first use a permutation based multiple-regression approach to simultaneously evaluate the relative influence of historical and contemporary gene flow together with putative barriers to dispersal. We then use a discrete diffusion model of phylogeography to infer the historical migration and colonization routes most likely used by L. laevigata across the Indo-Pacific. We show that estimates of genetic structure have a stronger correlation to geographic distances than to "oceanographic" distances from a biophysical model of larval dispersal, reminding us that population genetic estimates of gene flow and genetic structure are often shaped by historical processes. While the diffusion model was equivocal about the location of the mitochondrial most recent common ancestor (MRC A), we show that gene flow has generally proceeded in a step-wise manner across the Indian and Pacific oceans. We do not find support for previously described barriers at the Sunda Shelf and within Cenderwasih Bay. Rather, the strongest genetic disjunction is found to the east of Cenderwasih Bay along northern New Guinea. These results underscore the importance of comprehensive range-wide sampling in marine phylogeography.© 2014 Rosenstiel School of Marine and Atmospheric Science of the University of Miami.
dc.description.publication-statusPublished
dc.format.extent399 - 425 (27)
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000331671000016&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationBULLETIN OF MARINE SCIENCE, 2014, 90 (1), pp. 399 - 425 (27)
dc.identifier.doi10.5343/bms.2013.1052
dc.identifier.elements-id235626
dc.identifier.harvestedMassey_Dark
dc.identifier.issn0007-4977
dc.languageEnglish
dc.publisherROSENSTIEL SCH MAR ATMOS SCI
dc.relation.isPartOfBULLETIN OF MARINE SCIENCE
dc.rights(c) The author/s CC BY-NC-ND
dc.subjectScience & Technology
dc.subjectLife Sciences & Biomedicine
dc.subjectPhysical Sciences
dc.subjectMarine & Freshwater Biology
dc.subjectOceanography
dc.subjectMARINE & FRESHWATER BIOLOGY
dc.subjectOCEANOGRAPHY
dc.subjectINDO-WEST PACIFIC
dc.subjectCORAL-REEF FISH
dc.subjectMARINE BIODIVERSITY
dc.subjectPOPULATION-GENETICS
dc.subjectCOMPARATIVE PHYLOGEOGRAPHY
dc.subjectLANDSCAPE GENETICS
dc.subjectMITOCHONDRIAL-DNA
dc.subjectSEASCAPE GENETICS
dc.subjectCONNECTIVITY
dc.subjectPATTERNS
dc.subject.anzsrc04 Earth Sciences
dc.subject.anzsrc05 Environmental Sciences
dc.subject.anzsrc06 Biological Sciences
dc.titleReturn of the ghosts of dispersal past: Historical spread and contemporary gene flow in the blue sea star Linckia laevigata
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Natural Sciences
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