Population Genetics of the Common SquidLoligo pealeiLeSueur, 1821, from Cape Cod to Cape Hatteras

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Abstract
Collections of Loligo pealei LeSueur, 1821 from the Atlantic seaboard between Cape Hatteras and Georges Bank differ significantly in both allele and genotype frequencies at the phosphoglucomutase locus. Loligo pealei collected off the coast of Virginia are distinct at this locus from all other areas surveyed. Loligo pealei collected from Georges Bank also differ significantly at this locus from those collected inshore off Cape Cod. These results suggest that L. pealei along the Atlantic seaboard consists of several distinct populations. A comparison of allele frequencies at nine allozyme loci among L. pealei, Loligo plei Blainville, 1823, and Lolliguncula brevis (Blainville, 1823) reveals that L. pealei differs completely from L. plei at five loci, L. pealei from L. brevis at six loci, and L. plei from L. brevis at three loci.

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