The cockle Cerastoderma edule at Northeast Atlantic shores: genetic signatures of glacial refugia

Krakau, Manuela; Jacobsen, Sabine; Jensen, Kaj Frank; Reise, Karsten

doi:10.1007/s00227-011-1802-8

Cited by 33 publications

(68 citation statements)

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“…Total DNA was extracted from adductor muscle or foot tissue (about 1 mm 3 ) following the protocol of the Qiagen DNeasy Blood and Tissue Kit. For C. glaucum a DNA fragment of 580 bp and for C. edule a fragment of about 700 bp were amplified and sequenced as described in Tarnowska et al (2010) and Krakau et al (2012) respectively. Finally, DNA of 335 individuals of C. edule and 250 individuals of C. glaucum were analyzed.…”

Section: Methodsmentioning

confidence: 99%

“…Finally, DNA of 335 individuals of C. edule and 250 individuals of C. glaucum were analyzed. For the complete datasets for each species refer to Tarnowska et al (2010) and Krakau et al (2012).…”

Section: Methodsmentioning

confidence: 99%

“…Here, for the first time the population genetic structures (mitochondrial DNA) of a substantial number of populations of these two well characterized sister species are compared to elucidate the factors shaping evolutionary history. This is a comparative analysis of the fragments of the data published before concerning each of two cockle species separately (Tarnowska et al, 2010;Krakau et al, 2012). The hypothesis states that differences in habitat types and life history are reflected in the genetic structure patterns of these two cockles indicating the important role of extrinsic and intrinsic factors in phylogeography.…”

Section: Introductionmentioning

confidence: 99%

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Comparative phylogeography of two sister (congeneric) species of cardiid bivalve: Strong influence of habitat, life history and post-glacial history

Tarnowska

Krakau

Jacobsen

et al. 2012

Estuarine, Coastal and Shelf Science

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Sister (congeneric) species may exhibit disparate patterns of biogeographic genetic structures due to different life histories and habitat preferences. The common cockle Cerastoderma edule and the lagoon cockle Cerastoderma glaucum probably diverged from their common ancestor in the present territory of Sahara around 5 million years ago. Although it is difficult to separate both species morphologically, various genetic markers, both mitochondrial and nuclear, clearly distinguish them. Furthermore, their lifestyles are different, as C. edule has a much less fragmented coastal habitat and a longer duration of pelagic larval stage than C. glaucum. A comparative genetic analysis was conducted on 17 populations of C. edule and 13 populations of C. glaucum using a 506 bp fragment of mitochondrial DNA (COI). We tested the hypothesis that differences in habitat types and life history are reflected in the genetic structure patterns of these two cockles. Indeed substantial differences in population genetic structures between them are revealed. Genetic diversity within C. glaucum populations decreases northwards as a consequence of post-glacial (re)colonization from southern refugia, while C. edule displays an opposite pattern indicating survival in glacial refuges in the northern Atlantic. Among populations within geographic groups, genetic differentiation is low in C. edule, probably as a result of larval dispersal with coastal currents, while it is extremely high in C. glaucum, best explained by the fragmented habitats. Interestingly, long distance divergence is less expressed in C. glaucum than in C. edule, which supports the speculation that migrating birds (frequently observed in lagoons) may occasionally transport the former more often or more efficiently than the latter. The approach applied in this study (e.g., rarefaction procedure, selection of samples of both species from the same regions) enabled a new and reliable comparative analysis of the existing raw datasets.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative phylogeography of two sister (congeneric) species of cardiid bivalve: Strong influence of habitat, life history and post-glacial history

Tarnowska

Krakau

Jacobsen

et al. 2012

Estuarine, Coastal and Shelf Science

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“…Genetic diversity patterns typically follow the 'southern richness, northern purity' (Hewitt 2000) model of allelic/haplotypic richness or modifications involving population admixtures (reviewed in Maggs et al 2008). High allelic/ haplotypic richness in northern latitudes has, so far, only been observed in the cockle C. edule (Krakau et al 2012) and the fucoid seaweed F. distichus (Coyer et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies targeting species in the Atlantic Ocean and Mediterranean Sea have been conducted for benthic intertidal organisms over the past 15 yr, including a number of bivalves and gastropods such as baltic tellin Macoma balthica (Luttikhuizen et al 2003), northern quahog Mercenaria mercenaria (Baker et al 2008), blue mussel Mytilus edulis (Riginos & Henzler 2008), blue mussel M. trossulus (Rawson & Harper 2009), softshell clam Mya arenaria (Strasser & Barber 2009), lagoon cockle Cerastoderma glaucum (Tarnowska et al 2010), and common cockle C. edule (Krakau et al 2012). In virtually all studies, the Atlantic and Mediterranean are well separated and a number of refugia have been identified in Northern Spain, Brittany, SW Ireland and the Lofoten area of Scandinavia (Fucus distichus, Coyer et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Isolation by distance and low connectivity in the peppery furrow shell Scrobicularia plana (Bivalvia)

Santos¹,

Cruzeiro²,

Olsen³

et al. 2012

Mar. Ecol. Prog. Ser.

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Scrobicularia plana da Costa, 1778, a commercially important bivalve species in southern Europe, is commonly found along the NE Atlantic and Mediterranean coasts. Like other intertidal mollusk species, it has a wide distributional range and high potential for larval dispersal. However, S. plana has a patchier distribution than most co-distributed soft sediment bivalves of the intertidal, which could lead to lower interpopulation connectivity and stronger population structure. We surveyed 18 locations from throughout the species' range to determine overall population structure, phylogeographic distribution and historical demography. We sequenced a portion of the mitochondrial cytochrome-c-oxidase I gene (COI) for 423 individuals. Three population clusters (Trondheim, Atlantic and Pisa) were identified on the basis of pairwise F ST s. Demographic parameters were analysed in a coalescence framework. Strong differentiation was found between most Atlantic locations and the single Mediterranean location (Pisa). Among Atlantic locations, differentiation was weak and non-significant, though significant isolation-by-distance was detected. A star-shaped phylogeny with mostly 1-step mutations was found. Although 65 haplotypes were detected, 50 were private. The higher diversity observed in southern Europe, Brittany and Norway was consistent with glacial refugia. Population expansion occurred recently with the oldest split, which was between all Atlantic groups and the Mediterranean group, taking place 0.3 to 1.1 million years ago (Myr). Negative values for neutrality tests and the star-shaped haplotype network were also indicative of recent population expansion, although such a pattern can also be the result of a selective sweep. An isolation-by-distance effect and absence of migration reveal low interpopulation connectivity, which is likely reinforced by the species' patchy spatial distribution.KEY WORDS: Scrobicularia plana · Mitochondrial DNA · Genetic structure · Phylogeography · Glacial refugiaResale or republication not permitted without written consent of the publisher

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Marine Refugia Past, Present, and Future: Lessons from Ancient Geologic Crises for Modern Marine Ecosystem Conservation

Schneider

2018

Topics in Geobiology

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The cockle Cerastoderma edule at Northeast Atlantic shores: genetic signatures of glacial refugia

Abstract: The cockle Cerastoderma (Cardium) edule (L.) ranges from NW Africa to northern Scandinavia. Abundance in shallow coastal sediment is often high, and it attracts commercial harvest.

Cited by 33 publications

References 58 publications

Comparative phylogeography of two sister (congeneric) species of cardiid bivalve: Strong influence of habitat, life history and post-glacial history

Comparative phylogeography of two sister (congeneric) species of cardiid bivalve: Strong influence of habitat, life history and post-glacial history

Isolation by distance and low connectivity in the peppery furrow shell Scrobicularia plana (Bivalvia)

Marine Refugia Past, Present, and Future: Lessons from Ancient Geologic Crises for Modern Marine Ecosystem Conservation

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