Electrophoretic analyses of phosphoglucomutase (PGM) and fumarase (FH) in a population of Lecithochirium rufoviride parasitizing Conger conger, revealed 2 independent activity zones for each enzyme on starch gel electrophoresis. However, some individuals exhibited only 1 activity zone for 1 or both enzymes. The banding patterns observed strongly suggest that (1) PGM is coded by 2 polymorphic loci, Pgm-1 (expressed in all individuals) with allelic frequencies not significantly different from those expected under Hardy–Weinberg equilibrium, and Pgm-2 (expressed in a subset of individuals); and (2) FH is coded by 2 loci, Fh-2 (monomorphic and expressed in all individuals) and Fh-1 (expressed in a subset of individuals). A high degree of concordance (88.75%) was observed between the expression and nonexpression of Pgm-2 and Fh-1. The most likely explanations for these findings are either variation in enzyme expression with developmental stage or the presence of null alleles at high frequencies in the population.
Unusual Electrophoretic Patterns for Phosphoglucomutase and Fumarase in a Population of Lecithochirium rufoviride (Trematoda: Hemiuridae), a Parasite of Conger conger
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R. VILAS, E. PANIAGUA, M. L. SANMARTÍN, M. T. SANTAMARINA, F. M. UBEIRA; Unusual Electrophoretic Patterns for Phosphoglucomutase and Fumarase in a Population of Lecithochirium rufoviride (Trematoda: Hemiuridae), a Parasite of Conger conger. J Parasitol 1 June 2001; 87 (3): 709–711. doi: https://doi.org/10.1645/0022-3395(2001)087[0709:UEPFPA]2.0.CO;2
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