Abstract
Genetic variation at 24 enzymatic loci was studied by means of starch gel electrophoresis in five samples of angler-fish, Lophius piscatorius L., from the Irish Sea and west of Scotland. Electrophoretic variation was detected at 11 loci, encoding eight enzyme systems, with 25 alleles being observed. Heterozygosity per locus ranged from 0.039 to 0.063, averaging 0.051 among samples. Allelic frequencies differed significantly among samples, although overall heterogeneity was non-significant when the west of Scotland sample was excluded. Genetic identity values ranged from I ̄ = 0.9977 to I ̄ = 0.9998 , averaging I ̄ = 0.9989 among samples. These results suggest that, at least within the Irish Sea, L. piscatorius comprise a single breeding group.
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