A molecular approach to the ecology of a mussel ( Mytilus edulis - M. trossulus ) hybrid zone on the east coast of Newfoundland, Canada

Comesaña, Ángel S.; Toro, Jorge E.; Innes, David J.; Thompson, R. J.

doi:10.1007/s002270050460

Cited by 77 publications

(53 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This situation is completely different from that at the Danish strait (Zbawicka et al 2014) and Scotland (Comesaña et al 1999;Zbawicka et al 2010Zbawicka et al , 2012 where hybridization between 'pure' taxa and hybrids is frequent.…”

Section: Hybridizationmentioning

confidence: 63%

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

et al. 2015

View full text Add to dashboard Cite

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.

show abstract

Section: Hybridizationmentioning

confidence: 63%

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

et al. 2015

View full text Add to dashboard Cite

show abstract

“…These 2 species are sympatric and hybridize in the northwest Atlantic (Comesaña et al 1999, Rawson et al 2001, Riginos & Cunningham 2005 and within the Baltic Sea (Riginos & Cunningham 2005, Kijewski et al 2006). In the northwest Atlantic, hybridization between these species is less than 30% (Comesaña et al 1999, Riginos & Cunningham 2005, F 1 hybrids are rare (Rawson et al 2001) and backcrossed individuals tend to favor M. trossulus alleles (Riginos & Cunningham 2005). Furthermore, evidence of reduced fertilization success when interspecific mating occurs between these 2 species has been reported in the northwest Atlantic (Rawson et al 2003).…”

Section: Abstract: Mytilus Galloprovincialis · Mytilus Trossulus · Hmentioning

confidence: 99%

Extensive hybridization with minimal introgression in Mytilus galloprovincialis and M. trossulus in Hokkaido, Japan

Brannock¹,

Wethey²,

Hilbish³

2009

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

“…M. galloprovincialis generally has a more southern distribution than the other two species. All three species may hybridise in narrow zones where their distributions overlap (Cousteau et al 1991;Gosling 1992;Saavedra et al 1996;Comensaaea et al 1999). Several studies of allozyme frequencies at hybrid zones of these three species have been completed in the north-western Atlantic (Koehn et al 1975(Koehn et al , 1984Mallet and Carver 1989;McDonald et al 1991;Pedersen et al 2000;Hilbish et al 2002) and in the north-eastern Atlantic (Väinölä and Hvilsom 1991;Hummel et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Genotypes of Mytilus from waters of different salinity around Bergen, Norway

Ridgway

Nævdal

2004

Helgol Mar Res

View full text Add to dashboard Cite

Samples of Mytilus were collected at eight sites located in and around Bergen, Norway, and analysed by starch gel electrophoresis for the two highly polymorphic loci PGM* and PGI*. The genotype distribution and allele frequencies varied significantly among samples from the different locations. The variations were most significant between localities with full strength seawater and brackish water, and this difference was so large that it indicated the presence of two populations, possibly representing two species. The brackish water mussels may represent the species Mytilus trossulus, while the species Mytilus edulis may be distributed on the outer shores where salinity is normally around 30‰. Differential survival, as a result of specific adaptation to different salinities, may be the mechanism that maintains the populations (or species) and prevents gene flow between them.

show abstract

A molecular approach to the ecology of a mussel ( Mytilus edulis - M. trossulus ) hybrid zone on the east coast of Newfoundland, Canada

Cited by 77 publications

References 34 publications

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

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

Extensive hybridization with minimal introgression in Mytilus galloprovincialis and M. trossulus in Hokkaido, Japan

Genotypes of Mytilus from waters of different salinity around Bergen, Norway

Contact Info

Product

Resources

About