Evaluating edge-of-range genetic patterns for tropical echinoderms, Acanthaster planci and Tripneustes gratilla, of the Kermadec Islands, southwest Pacific

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dc.citation.issue1
dc.citation.volume90
dc.contributor.authorLiggins L
dc.contributor.authorGleeson L
dc.contributor.authorRiginos C
dc.date.accessioned2022-07-20T02:36:32Z
dc.date.available2014-01-01
dc.date.available2022-07-20T02:36:32Z
dc.date.issued2014-01-01
dc.descriptionEmbargo period 5yrs has expired
dc.description.abstractEdge-of-range populations are often typified by patterns of low genetic diversity and high genetic differentiation relative to populations within the core of a species range. The "core-periphery hypothesis," also known as the "central-marginal hypothesis," predicts that these genetic patterns at the edge-of-range are a consequence of reduced population size and connectivity toward a species range periphery. It is unclear, however, how these expectations relate to high dispersal marine species that can conceivably maintain high abundance and high connectivity at their range edge. In the present study, we characterize the genetic patterns of two tropical echinoderm populations in the Kermadec Islands, the edge of their southwest Pacific range, and compare these genetic patterns to those from populations throughout their east Indian and Pacific ranges. We find that the populations of both Acanthaster planci (Linnaeus, 1758) and Tripneustes gratilla (Linnaeus, 1758) are represented by a single haplotype at the Kermadec Islands (based on mitochondrial cytochrome oxidase C subunit I). Such low genetic diversity concurs with the expectations of the "core-periphery hypothesis." Furthermore, the haplotypic composition of both populations suggests they have been founded by a small number of colonists with little subsequent immigration. Thus, local reproduction and self-recruitment appear to maintain these populations despite the ecologically marginal conditions of the Kermadec Islands for these tropical species. Understanding rates of self-recruitment vs reliance on connectivity with populations outside of the Kermadec Islands has implications for the persistence of these populations and range stability of these echinoderm species.© 2014 Rosenstiel School of Marine and Atmospheric Science of the University of Miami.
dc.description.publication-statusPublished
dc.format.extent379 - 397 (19)
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000331671000015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationBULLETIN OF MARINE SCIENCE, 2014, 90 (1), pp. 379 - 397 (19)
dc.identifier.doi10.5343/bms.2013.1015
dc.identifier.elements-id235624
dc.identifier.harvestedMassey_Dark
dc.identifier.issn0007-4977
dc.languageEnglish
dc.publisherROSENSTIEL SCH MAR ATMOS SCI
dc.relation.isPartOfBULLETIN OF MARINE SCIENCE
dc.subjectScience & Technology
dc.subjectLife Sciences & Biomedicine
dc.subjectPhysical Sciences
dc.subjectMarine & Freshwater Biology
dc.subjectOceanography
dc.subjectMARINE & FRESHWATER BIOLOGY
dc.subjectOCEANOGRAPHY
dc.subjectNEW-ZEALAND
dc.subjectSPECIES RANGE
dc.subjectPERIPHERAL-POPULATIONS
dc.subjectDNA POLYMORPHISM
dc.subjectCLIMATE-CHANGE
dc.subjectDIVERSITY
dc.subjectFISHES
dc.subjectMARINE
dc.subjectHYPOTHESIS
dc.subjectDISPERSAL
dc.subject.anzsrc04 Earth Sciences
dc.subject.anzsrc05 Environmental Sciences
dc.subject.anzsrc06 Biological Sciences
dc.titleEvaluating edge-of-range genetic patterns for tropical echinoderms, Acanthaster planci and Tripneustes gratilla, of the Kermadec Islands, southwest Pacific
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
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