Volume VI, 2007
Matthew R. Gilg
The processes of recruitment in marine bivalves and their larvae can be caused by process that occur before, during, or after these organisms settle. The mussel species Mytilus edulis and M. galloprovincialis form a hybrid zone located in southwest England. Individuals with hybrid genotypes settle in the M. galloprovincialis parental populations, but the hybrid zone does not appear to be expanding. Comparisons of allele and genotype frequencies of recently settled mussels from different age classes in the M. galloprovincialis population show a marked decrease in M. edulis-specific alleles and hybrid genotypes. These data demonstrate that there is likely selection acting against individuals with M. edulis alleles that settle in the M. galloprovincialis population.
O’Connor, Melissa M., "Selection During Larval Recruitment in a Blue Mussel Hybrid Zone" (2007). All Volumes (2001-2008). Paper 36.