Peer-Reviewed Journal Details
Mandatory Fields
Cross, ME;Bradley, CR;Cross, TF;Culloty, S;Lynch, S;McGinnity, P;O'Riordan, RM;Vartia, S;Prodohl, PA
2016
May
Marine Ecology Progress Series
Genetic evidence supports recolonisation by Mya arenaria of western Europe from North America
Validated
WOS: 8 ()
Optional Fields
SNAIL LITTORINA-LITTOREA DNA SEQUENCE DATA POPULATION-STRUCTURE GLACIAL REFUGIA MICROSATELLITE DATA COMPUTER-PROGRAM MARINE ATLANTIC RANGE HISTORY
549
99
112
The softshell clam Mya arenaria (L.) is currently widespread on the east and west coasts of North America. This bivalve also occurs on western European shores, where the post-Pleistocene origin of the species, whether introduced or relict, has been debated. We collected 320 M. arenaria from 8 locations in Europe and North America. Clams (n = 84) from 7 of the locations were examined for mitochondrial DNA variation by sequencing a section of the cytochrome oxidase 1 (COX1) gene. These were analysed together with 212 sequences, sourced from GenBank, from the same gene from 12 additional locations, chiefly from eastern North America but also 1 site each from western North America and from western Europe. Ten microsatellite loci were also investigated in all 320 clams. Nuclear markers showed reduced levels of variation in certain European samples. The same common COX1 haplotypes and microsatellite alleles were present throughout the range of M. arenaria, although significant differences were identified in haplotypic and allelic composition between many samples, particularly those from the 2 continents (Europe and North America). These findings support the hypothesis of post-Pleistocene colonisation of European shores from eastern North America (and the recorded human transfer of clams from the east to the west coast of North America in the 19th century).
OLDENDORF LUHE
0171-8630
10.3354/meps11672
Grant Details