Distribution of Mytilus taxa in European coastal areas as inferred from molecular markers

Kijewski, Tomasz; Śmietanka, Beata; Zbawicka, Małgorzata; Gosling, Elizabeth; Hummel, H.; Wenne, Roman

doi:10.1016/j.seares.2010.10.004

Cited by 60 publications

(65 citation statements)

References 55 publications

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“…Although early studies on the impacts of Mytilicola species on, for example, host filtration rates, oxygen consumption and condition index led to controversial results (reviewed by Lauckner 1983), later studies indicated negative effects on host condition (Theisen 1987;Kijewski et al 2011;Camacho et al 1997;Feis et al 2016;Goedknegt et al in review). Furthermore, both Mytilicola species are known to cause changes in cells of the gut epithelium of both blue mussels (M. intestinalis; Sparks 1962; Moore et al 1978) and Pacific oysters (M. orientalis; reviewed by Lauckner 1983) that can lead to inflammations of the mucosa and sub-mucosa in the intestines (Watermann et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Spillover but no spillback of two invasive parasitic copepods from invasive Pacific oysters (Crassostrea gigas) to native bivalve hosts

et al. 2016

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Invasive species can cause indirect effects on native biota by modifying parasite-host interactions and disease occurrence in native species. This study investigated the role of the invasive Pacific oyster (Crassostrea gigas) in potential spillover (co-introduced parasites infect native hosts) and spillback (native or established parasites infect invasive hosts and re-infect native hosts) scenarios of recently introduced (Mytilicola orientalis) and previously established (Mytilicola intestinalis) marine parasitic copepods in two regions in northern Europe, the Dutch Delta and the Wadden Sea. By examining 3416 individuals of 11 potential host species from sympatric host populations, we found that the recently introduced parasite M. orientalis does not only infect its principal host, the invasive Pacific oyster (prevalence at infected sites 2-43 %, mean intensity 4.1 ± 0.6 SE), but also native blue mussels (Mytilus edulis; 3-63 %, 2.1 ± 0.2), common cockles (Cerastoderma edule; 2-13 %, 1.2 ± 0.3) and Baltic tellins (Macoma balthica; 6-7 %, 1.0 ± 0), confirming a spillover effect. Spillback effects were not observed as the previously established M. intestinalis was exclusively found in blue mussels (prevalence at infected locations 3-72 %, mean intensity 2.4 ± 0.3 SE). The high frequency of M. orientalis spillover, in particular to native mussels, suggests that Pacific oysters may cause strong parasite-mediated indirect impacts on native bivalve populations.

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Section: Discussionmentioning

confidence: 99%

Spillover but no spillback of two invasive parasitic copepods from invasive Pacific oysters (Crassostrea gigas) to native bivalve hosts

et al. 2016

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“…Hybrids have been identified using species-specific nuclear and mitochondrial DNA PCR markers (Inoue et al, 1997;Braby and Somero, 2006;Kijewski et al, 2011). MS markers are also useful for the identification of hybrids.…”

Section: Discussionmentioning

confidence: 99%

Genetic characterization of Mytilus coruscus and M. galloprovincialis using microsatellite markers

Kang

Lee²,

Noh³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. Korean (hard-shelled) mussels (Mytilus coruscus) are an economically important endemic marine bivalve mollusk of Korea; yet, the population has rapidly declined because of overharvesting and habitat competition from the invasive Mytilus galloprovincialis species. The population structures of M. coruscus and M. galloprovincialis were analyzed by next-generation sequencing using 5 microsatellite markers specifically developed for M. coruscus. M. galloprovincialis had an average of 5.4 alleles per locus (range = 2-10), with an average allelic richness of 4.9 per locus (range = 2.0-9.3). M. coruscus had an average of 5.7 alleles per locus (range = 2-13), with an average allelic richness of 5.2 per locus (range = 2.0-11.9). Excessive homozygosity was observed at 3 loci, which was assumed to be due to the presence of null alleles at these loci. Pairwise multilocus F ST estimates showed that the M. coruscus and M. galloprovincialis populations were clearly separated. Six populations of M. galloprovincialis from the western, eastern, and southern coast of Korea formed 2 separate clusters, indicating that more than 2 populations of M. galloprovincialis have been introduced to the Korean Peninsula. Hybrids between M. coruscus 5495 ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 12 (4): 5494-5505 (2013) Genetic characterization of Mytilus mussels and M. galloprovincialis were not identified, probably because of genetic differences or different habitat preferences. Further genetic information is required to perform selective breeding, population management, and restoration of M. coruscus.

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“…It is thought that the complex originated from M. trossulus in the Pacific followed by colonization in the Northern Atlantic giving rise to both M. edulis and M. galloprovincialis (Vermeij 1992;Riginos and Cunningham 2005). While until recently it has been believed that the distribution of M. trossulus was restricted to the North Pacific, eastern Canada and the Baltic Sea (Riginos and Cunningham 2005), more recent research has documented its occurrence on the coasts of Scotland, Iceland, the Barents Sea, the White Sea and Norway (Beaumont et al 2008;Zbawicka et al 2010;Kijewski et al 2011;Väinölä and Strelkov 2011). The presence of M. edulis has been reported in the northern part of the Atlantic and European seas from the White and Barents Sea to the Atlantic coast of southern France and M. galloprovincialis in the Mediterranean Sea, Black Sea and along the Atlantic coastline of Western Europe including the British northern islands (e.g., Väinölä and Hvilsom 1991;Borsa et al 1999;Bierne et al 2003;Riginos and Cunningham 2005;Riginos and Henzler 2008;Zbawicka et al 2012Zbawicka et al , 2014.…”

Section: Introductionmentioning

confidence: 99%

A first report on coexistence and hybridization of Mytilus trossulus and M. edulis mussels in Greenland

et al. 2015

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Semi-sessile Mytilus mussels are used as indicators of climate changes, but their geographic distribution is not sufficiently known in the Arctic. The aim of this study was to investigate the taxonomic status and genetic differentiation of Mytilus populations in a Northwest Greenlandic fjord at Maarmorilik, impacted by contaminations from a former mine. In this study, mussels were collected at three sites differing in exposure to environmental factors. A total of 54 polymorphic SNPs found in the Mytilus EST and DNA sequences analyzed were successfully applied to 256 individuals. The results provided the first evidence for the existence of M. trossulus in Greenland. The mussel from M. trossulus and M. edulis taxa are shown to coexist and hybridize in the fjord. The three studied sites were found to differ significantly in the distribution of taxa with a higher prevalence of M. trossulus in the inner fjord. The identified M. edulis 9 M. trossulus hybrids mostly had a hybrid index score of about 0.5, indicating a similar number of alleles characteristic for M. trossulus and M. edulis. There was a low number of backcrosses between 'pure' taxa and hybrids. This newly discovered hybrid zone between the two taxa is unique in comparison with the Canadian populations. As Mytilus mussels in Greenland hitherto have been regarded as the one taxon M. edulis, the results have importance for biogeography and future monitoring and environmental studies.

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Distribution of Mytilus taxa in European coastal areas as inferred from molecular markers

Cited by 60 publications

References 55 publications

Spillover but no spillback of two invasive parasitic copepods from invasive Pacific oysters (Crassostrea gigas) to native bivalve hosts

Spillover but no spillback of two invasive parasitic copepods from invasive Pacific oysters (Crassostrea gigas) to native bivalve hosts

Genetic characterization of Mytilus coruscus and M. galloprovincialis using microsatellite markers

A first report on coexistence and hybridization of Mytilus trossulus and M. edulis mussels in Greenland

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