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Article: Temporal genetic variation in populations of the limpet Cellana grata from Hong Kong shores

TitleTemporal genetic variation in populations of the limpet Cellana grata from Hong Kong shores
Authors
KeywordsCohort analysis
Gene flow
Population bottleneck
Snail
Cellana grata
Issue Date2010
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00227/index.htm
Citation
Marine Biology, 2010, v. 157 n. 2, p. 325-337 How to Cite?
AbstractVariations in the relative contributions of gene flow and spatial and temporal variation in recruitment are considered the major determinants of population genetic structure in marine organisms. Such variation can be assessed through repeated measures of the genetic structure of a species over time. To test the relative importance of these two phenomena, temporal variation in genetic composition was measured in the limpet Cellana grata, among four annual cohorts over 10 years at four rocky shores in Hong Kong. A total of 408 limpets, comprising individuals from 1998, 1999, 2006 and 2007 cohorts were screened for genetic variation using five microsatellite loci. Minor but significant genetic differentiation was detected among samples from the 1998/1999 collection (FST = 0.0023), but there was no significant differentiation among the 2006/2007 collection (FST = 0.0008). Partitioning of genetic variation among shores was also significant in 1998/1999 but not in the 2006/2007 collection, although there was no correlation between genetic and geographic distances. There was no significant difference between collections made in 1998/1999 and 2006/2007. This lack of clear structure implies a high level of gene flow, but differentiation with time may be the result of stochastic recruitment variation among shores. Estimates of effective population size were not high (599, 95% C. L. 352-11397), suggesting the potential susceptibility of the populations to genetic drift, although a significant bottleneck effect was not detected. These findings indicate that genetic structuring between populations of C. grata in space and time may result from spatio-temporal variation in recruitment, but the potential development of biologically significant differentiation is suppressed by a lack of consistency in recruitment variability and high connectivity among shores. © Springer-Verlag 2009.
Persistent Identifierhttp://hdl.handle.net/10722/127348
ISSN
2015 Impact Factor: 2.375
2015 SCImago Journal Rankings: 1.302
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council, Hong KongHKU7238/97M
Funding Information:

We thank M. N. Chan for microsatellite characterization, R. I. Lewis for his input during the early parts of this study and Neil Hutchinson for analysis of population structure. We are especially grateful to Michael Hellberg for constructive, critical comment on the MS. This research was supported by the Research Grants Council, Hong Kong (Project no. HKU7238/97M).

References

 

DC FieldValueLanguage
dc.contributor.authorNg, WCen_HK
dc.contributor.authorLeung, FCCen_HK
dc.contributor.authorChak, STCen_HK
dc.contributor.authorSlingsby, Gen_HK
dc.contributor.authorWilliams, GAen_HK
dc.date.accessioned2010-10-31T13:20:18Z-
dc.date.available2010-10-31T13:20:18Z-
dc.date.issued2010en_HK
dc.identifier.citationMarine Biology, 2010, v. 157 n. 2, p. 325-337en_HK
dc.identifier.issn0025-3162en_HK
dc.identifier.urihttp://hdl.handle.net/10722/127348-
dc.description.abstractVariations in the relative contributions of gene flow and spatial and temporal variation in recruitment are considered the major determinants of population genetic structure in marine organisms. Such variation can be assessed through repeated measures of the genetic structure of a species over time. To test the relative importance of these two phenomena, temporal variation in genetic composition was measured in the limpet Cellana grata, among four annual cohorts over 10 years at four rocky shores in Hong Kong. A total of 408 limpets, comprising individuals from 1998, 1999, 2006 and 2007 cohorts were screened for genetic variation using five microsatellite loci. Minor but significant genetic differentiation was detected among samples from the 1998/1999 collection (FST = 0.0023), but there was no significant differentiation among the 2006/2007 collection (FST = 0.0008). Partitioning of genetic variation among shores was also significant in 1998/1999 but not in the 2006/2007 collection, although there was no correlation between genetic and geographic distances. There was no significant difference between collections made in 1998/1999 and 2006/2007. This lack of clear structure implies a high level of gene flow, but differentiation with time may be the result of stochastic recruitment variation among shores. Estimates of effective population size were not high (599, 95% C. L. 352-11397), suggesting the potential susceptibility of the populations to genetic drift, although a significant bottleneck effect was not detected. These findings indicate that genetic structuring between populations of C. grata in space and time may result from spatio-temporal variation in recruitment, but the potential development of biologically significant differentiation is suppressed by a lack of consistency in recruitment variability and high connectivity among shores. © Springer-Verlag 2009.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00227/index.htmen_HK
dc.relation.ispartofMarine Biologyen_HK
dc.rightsThe original publication is available at www.springerlink.com-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectCohort analysis-
dc.subjectGene flow-
dc.subjectPopulation bottleneck-
dc.subjectSnail-
dc.subjectCellana grata-
dc.titleTemporal genetic variation in populations of the limpet Cellana grata from Hong Kong shoresen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0025-3162&volume=157&issue=2&spage=325&epage=337&date=2010&atitle=Temporal+genetic+variation+in+populations+of+the+limpet+Cellana+grata+from+Hong+Kong+shoresen_HK
dc.identifier.emailLeung, FCC: fcleung@hkucc.hku.hken_HK
dc.identifier.emailWilliams, GA: hrsbwga@hkucc.hku.hken_HK
dc.identifier.authorityLeung, FCC=rp00731en_HK
dc.identifier.authorityWilliams, GA=rp00804en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1007/s00227-009-1320-0en_HK
dc.identifier.scopuseid_2-s2.0-77949267718en_HK
dc.identifier.hkuros175969en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77949267718&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume157en_HK
dc.identifier.issue2en_HK
dc.identifier.spage325en_HK
dc.identifier.epage337en_HK
dc.identifier.isiWOS:000273560200010-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridNg, WC=24723024100en_HK
dc.identifier.scopusauthoridLeung, FCC=7103078633en_HK
dc.identifier.scopusauthoridChak, STC=35767561600en_HK
dc.identifier.scopusauthoridSlingsby, G=26531739300en_HK
dc.identifier.scopusauthoridWilliams, GA=7406082821en_HK
dc.identifier.citeulike6039912-

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