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Biol Bull 145: 83-90. (August 1973)
© 1973 Marine Biological Laboratory
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GENE-ENZYME VARIATION IN THREE SYMPATRIC SPECIES OF LITTORINA

EDWARD M. BERGER 1

1 Department of Biology, State University of New York at Albany, Albany, New York 12222 and Marine Biological Laboratory, Woods Hole, Massachusetts 02543

Gene-enzyme variation was examined, electrophoretically, at three non-specific esterase loci in 15 sympatric populations of the prosobranch gastropods: Littorina littorea L. obtusata, and L. saxatilis. Gene frequencies, determined by assuming a correspondence between bands on gels and alleles, revealed marked differences between the species. These differences appear to be correlated with the mechanisms and capabilities for larval disposal in these species.




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