Hybrid zones are 'natural laboratories' for studying the origin, maintenance and demise of
species. Theory predicts that hybrid zones can move in space and time, with significant …

Publisher Summary The chapter discusses the hybridization in the sea. The major intentions
of this review are:(1) to point out that hybridization in the sea is not as rare as previously …

Many authors have considered the common mussels in temperate waters of the Northern
and Southern Hemispheres to be a single cosmopolitan species, Mytilus edulis Linnaeus …

Hybrid zones are fascinating systems to investigate the structure of genetic barriers. Marine
hybrid zones deserve more investigation because of the generally high dispersion potential …

Marine organisms challenge the classical theories of local adaptation and speciation
because their planktonic larvae have the potential to maintain high gene flow. The marine …

The distribution of Mytilus edulis Linnaeus, M. galloprovincialis Lamarck, and their hybrids
was examined in mussel populations in southwest England in 1996 and 1998. This is a …

We have used the polymerase chain reaction (PCR) and restriction fragment length
polymorphism (RFLP) techniques to design two genetic markers for blue mussels in the …

Intron-size variation at the actin gene locus mac-1 was used to characterize mussel, Mytilus
spp., populations in the∼ 2000-km wide zone of contact and hybridization ('hybrid zone') …

The study of hybrid zones offers important insights into speciation. Earlier studies on hybrid
populations of the marine mussel species Mytilus edulis and Mytilus galloprovincialis in SW …

Assortative mating (prezygotic isolation) and reduced hybrid fitness (postzygotic isolation)
are typically invoked to explain the stability of hybrid zones. In the tension zone model, these …