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Biol Bull 177: 287-294. (October 1989)
© 1989 Marine Biological Laboratory
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Population Genetics of the Common Squid Loligo pealei LeSueur, 1821, from Cape Cod to Cape Hatteras

RONALD L. GARTHWAITE 1, CARL J. BERG JR 1, and JUNE HARRIGAN 1

1 Marine Biological Laboratory, Woods Hole, Massachusetts 02543

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.

Submitted on October 3, 1988
Accepted on July 31, 1989




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