Data from: Genetic diversity and connectivity within Mytilus spp. in the subarctic and Arctic

Climate changes in the Arctic are predicted to alter distributions of marine species. However, such changes are difficult to quantify because information on present species distribution and the genetic variation within species is lacking or poorly examined. Blue mussels, Mytilus spp. are ecosystem e...

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Bibliographic Details
Main Authors: Mathiesen, Sofie Smedegaard, Thyrring, Jakob, Hemmer-Hansen, Jakob, Berge, Jørgen, Sukhotin, Alexey, Leopold, Peter, Bekaert, Michaël, Sejr, Mikael Kristian, Nielsen, Einar E.
Format: Dataset
Language:unknown
Published: 2016
Subjects:
glacial refugium
Mytilus edulis
SNPs
Mytilus trossulus
Arctic fauna
Arctic
Greenland
Svalbard
Pechora
Pechora Sea
Subarctic
Online Access:https://zenodo.org/record/5003863
https://doi.org/10.5061/dryad.438h3
Description
Summary:Climate changes in the Arctic are predicted to alter distributions of marine species. However, such changes are difficult to quantify because information on present species distribution and the genetic variation within species is lacking or poorly examined. Blue mussels, Mytilus spp. are ecosystem engineers in the coastal zone globally. In order to improve knowledge of distribution and genetic structure of the Mytilus edulis complex in the Arctic, we analyzed 81 SNPs in 534 Mytilus spp. individuals sampled at 13 sites to provide baseline data for distribution and genetic variation of Mytilus mussels in the European Arctic. Mytilus edulis was the most abundant species found with a clear genetic split between populations in Greenland and the Eastern Atlantic. Surprisingly, analyses revealed the presence of M. trossulus in high Arctic NW Greenland (77°N) and M. galloprovincialis or their hybrids in SW Greenland, Svalbard and the Pechora Sea. Furthermore, a high degree of hybridization and introgression between species was observed. Our study highlights the importance of distinguishing between congener species, which can display local adaptation and suggests that information on dispersal routes and barriers are essential for accurate predictions of regional susceptibility to range expansions or invasions of boreal species in the Arctic. Description of the SNP platesInformation sheet containing the description of which individuals were included in plates 2-7Fluidigm plates.xlsxPlate no 2Raw data from SNP plate no 2Plate_02.csvPlate no 3Raw data from SNP plate no 3Plate_03.csvPlate no 4Raw data from SNP plate no 4Plate_04.csvPlate no 5Raw data from SNP plate no 5Plate_05.csvPlate no 6Raw data from SNP plate no 6Plate_06.csvPlate no 7Raw data from SNP plate no 7Plate_07.csv

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