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

Sofie Smedegaard Mathiesen, Jakob Thyrring, Jakob Hemmer Hansen, Jørgen Berge, Alexey Sukhotin, Peter Leopold, Michaël Bekaert, Mikael Kristian Sejr, Einar Eg Nielsen

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Abstract

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. 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 Mytilus trossulus in high Arctic NW Greenland (77°N) and Mytilus 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 is essential for accurate predictions of regional susceptibility to range expansions or invasions of boreal species in the Arctic.
Original languageEnglish
JournalEvolutionary Applications
Volume10
Issue number1
Pages (from-to)39–55
ISSN1752-4563
DOIs
Publication statusPublished - 2017

Keywords

  • Ecology, Evolution, Behavior and Systematics
  • Genetics
  • Agricultural and Biological Sciences (all)
  • Mytilus edulis
  • Arctic fauna
  • Bivalves
  • Climate change
  • Glacial refugium
  • Hybrid zone
  • Population structure
  • SNPs

Cite this

Mathiesen, Sofie Smedegaard ; Thyrring, Jakob ; Hansen, Jakob Hemmer ; Berge, Jørgen ; Sukhotin, Alexey ; Leopold, Peter ; Bekaert, Michaël ; Sejr, Mikael Kristian ; Eg Nielsen, Einar. / Genetic diversity and connectivity within Mytilus spp. in the subarctic and Arctic. In: Evolutionary Applications. 2017 ; Vol. 10, No. 1. pp. 39–55.
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keywords = "Ecology, Evolution, Behavior and Systematics, Genetics, Agricultural and Biological Sciences (all), Mytilus edulis, Arctic fauna, Bivalves, Climate change, Glacial refugium, Hybrid zone, Population structure, SNPs",
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Mathiesen, SS, Thyrring, J, Hansen, JH, Berge, J, Sukhotin, A, Leopold, P, Bekaert, M, Sejr, MK & Eg Nielsen, E 2017, 'Genetic diversity and connectivity within Mytilus spp. in the subarctic and Arctic', Evolutionary Applications, vol. 10, no. 1, pp. 39–55. https://doi.org/10.1111/eva.12415

Genetic diversity and connectivity within Mytilus spp. in the subarctic and Arctic. / Mathiesen, Sofie Smedegaard; Thyrring, Jakob; Hansen, Jakob Hemmer; Berge, Jørgen; Sukhotin, Alexey; Leopold, Peter; Bekaert, Michaël; Sejr, Mikael Kristian; Eg Nielsen, Einar.

In: Evolutionary Applications, Vol. 10, No. 1, 2017, p. 39–55.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - Genetic diversity and connectivity within Mytilus spp. in the subarctic and Arctic

AU - Mathiesen, Sofie Smedegaard

AU - Thyrring, Jakob

AU - Hansen, Jakob Hemmer

AU - Berge, Jørgen

AU - Sukhotin, Alexey

AU - Leopold, Peter

AU - Bekaert, Michaël

AU - Sejr, Mikael Kristian

AU - Eg Nielsen, Einar

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AB - 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. 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 Mytilus trossulus in high Arctic NW Greenland (77°N) and Mytilus 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 is essential for accurate predictions of regional susceptibility to range expansions or invasions of boreal species in the Arctic.

KW - Ecology, Evolution, Behavior and Systematics

KW - Genetics

KW - Agricultural and Biological Sciences (all)

KW - Mytilus edulis

KW - Arctic fauna

KW - Bivalves

KW - Climate change

KW - Glacial refugium

KW - Hybrid zone

KW - Population structure

KW - SNPs

U2 - 10.1111/eva.12415

DO - 10.1111/eva.12415

M3 - Journal article

C2 - 28035234

VL - 10

SP - 39

EP - 55

JO - Evolutionary Applications (Online)

JF - Evolutionary Applications (Online)

SN - 1752-4563

IS - 1

ER -