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Genetic signs of multiple colonization events in Baltic ciscoes with radiation into sympatric spring- and autumn-spawners confined to early postglacial arrival
Responsible organisation
2014 (English)In: Ecology and Evolution, ISSN 2045-7758, Vol. 4Article in journal (Refereed) Published
Abstract [en]

Presence of sympatric populations may reflect local diversification or secondary contact of already distinct forms. The Baltic cisco (Coregonus albula) normally spawns in late autumn, but in a few lakes in Northern Europe sympatric autumn and spring- or winter-spawners have been described. So far, the evolutionary relationships and taxonomic status of these main life history forms have remained largely unclear. With microsatellites and mtDNA sequences, we analyzed extant and extinct spring- and autumn-spawners from a total of 23 Swedish localities, including sympatric populations. Published sequences from Baltic ciscoes in Germany and Finland, and Coregonus sardinella from North America were also included together with novel mtDNA sequences from Siberian C.sardinella. A clear genetic structure within Sweden was found that included two population assemblages markedly differentiated at microsatellites and apparently fixed for mtDNA haplotypes from two distinct clades. All sympatric Swedish populations belonged to the same assemblage, suggesting parallel evolution of spring-spawning rather than secondary contact. The pattern observed further suggests that postglacial immigration to Northern Europe occurred from at least two different refugia. Previous results showing that mtDNA in Baltic cisco is paraphyletic with respect to North American C.sardinella were confirmed. However, the inclusion of Siberian C.sardinella revealed a more complicated pattern, as these novel haplotypes were found within one of the two main C.albula clades and were clearly distinct from those in North American C.sardinella. The evolutionary history of Northern Hemisphere ciscoes thus seems to be more complex than previously recognized.

Place, publisher, year, edition, pages
2014. Vol. 4
Keyword [en]
Coregonus microsatellites mtDNA sequences phylogeography approximate bayesian computation microsatellite data population history mitochondrial-dna coregonus-sardinella computer-program albula differentiation divergence salmonidae Environmental Sciences & Ecology
Research subject
SWEDARCTIC 1994, Tundra Ecology 1994; SWEDARCTIC 2005, Beringia 2005
Identifiers
URN: urn:nbn:se:polar:diva-1893DOI: 10.1002/ece3.1299OAI: oai:DiVA.org:polar-1893DiVA: diva2:810698
Note

ISI Document Delivery No.: AU0MD Times Cited: 0 Cited Reference Count: 66 Delling, Bo Palm, Stefan Palkopoulou, Eleftheria Prestegaard, Tore Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (Formas) [215-2010-1235]; Carl Tryggers Stiftelse [CTS 09:290]; Swedish Species Information Centre; Swedish Polar Research Secretariat; Swedish Environmental Protection Agency Three anonymous reviewers provided constructive comments on a previous version of this manuscript. Financial support was provided by the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (Formas; grant no. 215-2010-1235) and Carl Tryggers Stiftelse (grant no. CTS 09:290) to SP, and the Swedish Species Information Centre to BD. We thank Edson Sandoval for advice on ABC analyses. Tissue samples were kindly provided by Nils Ryman (L. Oren, 1976) and Johan Hammar (L. Ladoga, 2006). Russian material from the NRM collection was collected during Tundra Ecology 1994 and Beringia 2005 - two expeditions funded by the Swedish Polar Research Secretariat. Contemporary tissue samples provided by the Institute of Freshwater Research have been collected within long-term environmental monitoring programs and projects funded by the Swedish Environmental Protection Agency. 0 Wiley-blackwell Hoboken Ecology

Available from: 2015-05-08 Created: 2015-05-06 Last updated: 2015-09-16Bibliographically approved

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CiteExportLink to record
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Citation style
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