Fig 4. GPI patterns in parents and progeny of C. rivularis (C- arakiensis) female X C. grgas ( 2 males ) .Lane l: C. rivularis female; lanes 2-3:, C. gigas males; lanes 4-7: patterns observed in early-setringspat; lanes 8-9: pattems observed in late-setting spat. Individuals with genotype 5 possess an allelenot found in any of the parents, indicating contaminatioa. Individuals with genotypes 7 and 8 show
both C gigas and C. rivularis parental alleles, confrmiag hybridization. Individuals with genotypc 9( 30% of those sampled ) show only maternal allele expression.