Evidence of the restricted gene flow within a small spatial scale in the Japanese common intertidal goby Chaenogobius annularis
Elucidating the scale of gene flow among populations is an important challenge for understanding the ecological dynamics and local adaptation of marine organisms. We assessed whether gene flow is restricted even at a small spatial scale in the Japanese common intertidal goby Chaenogobius annularis,...
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Published in | Marine ecology (Berlin, West) Vol. 33; no. 4; pp. 481 - 489 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Publishing Ltd
01.12.2012
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Subjects | |
Online Access | Get full text |
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Summary: | Elucidating the scale of gene flow among populations is an important challenge for understanding the ecological dynamics and local adaptation of marine organisms. We assessed whether gene flow is restricted even at a small spatial scale in the Japanese common intertidal goby Chaenogobius annularis, using highly polymorphic DNA markers, involving the mitochondrial DNA (mtDNA) control region and 15 microsatellite DNA (msDNA), because past ecological studies have suggested low dispersal ability for rocky intertidal fishes. We found significant heterogeneities between four neighboring local populations by both mtDNA and msDNA analyses. In addition, no genetic heterogeneity was detected by either method across generations within a population; it was considered that such genetic differentiation is retained across generations and that the gene flow of this species is restricted to within a radius of a few kilometers. This is the first report showing a clear genetic subdivision in rocky intertidal fish. |
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Bibliography: | http://dx.doi.org/10.1111/j.1439-0485.2012.00512.x ArticleID:MAEC512 ark:/67375/WNG-KSR4NBC3-3 istex:B7F79111B9DB17C42638AFAEDF9C0367DC60337B ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0173-9565 1439-0485 |
DOI: | 10.1111/j.1439-0485.2012.00512.x |