Electrophoretic variation in sympatric mud crabs [Panopeus herbstii and Eurypanopeus depressus] from North Inlet, South Carolina

The genetic variation of 27 scorable genes in Eurypanopeus depressus , 25 in Panopeus herbstii form "simpsoni" and 24 in P. herbstii form "obesa" at Town Creek, North Inlet, South Carolina, was studied by gel electrophoresis. The three populations had low levels of genetic variab...

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Bibliographic Details
Published in:The Biological bulletin (Lancaster) 1980-01, Vol.159 (2), p.418-427
Main Authors: Turner, K, Lyerla, T.A
Format: Article
Language:English
Subjects:
Crabs
Crustacea
Decapoda
Dehydrogenases
Enzymes
Eurypanopeus
Eurypanopeus depressus
Gels
Genera
Genetic loci
Genetic variation
Inlets
Mud
Panopeus
Panopeus herbstii
Population genetics
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Summary:The genetic variation of 27 scorable genes in Eurypanopeus depressus , 25 in Panopeus herbstii form "simpsoni" and 24 in P. herbstii form "obesa" at Town Creek, North Inlet, South Carolina, was studied by gel electrophoresis. The three populations had low levels of genetic variability, comparable to those found in other decapod crustaceans, with polymorphisms observed only at the amylase and malate dehydrogenase loci. The two forms of P. herbstii could be distinguished both by previously described morphological differences and by genetic differences found in this study. The amounts of genetic variation in E. depressus and P. herbstii were similar, as measured by H, but electromorphs at only 4 of 23 scorable loci. The common, but specific, polymorphisms at amylase and malate dehydrogenase were taken to imply selective influences as a factor in their maintenance within these two sympatric genera.
ISSN:0006-3185
1939-8697
DOI:10.2307/1541104