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Genetic polymorphism in Proteocephalus exiguus shown by enzyme electrophoresis

Published online by Cambridge University Press:  05 June 2009

V. Šnábel ,
V. Hanzelová ,
S. Mattiucci ,
S. D'Amelio  and
L. Paggi
V. Šnábel
Affiliation:
Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia
V. Hanzelová
Affiliation:
Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia
S. Mattiucci
Affiliation:
Institute of Parasitology, University of Rome “La Sapienza”, Piazzale Aldo Moro 5, 00185 Rome, Italy
S. D'Amelio
Affiliation:
Institute of Parasitology, University of Rome “La Sapienza”, Piazzale Aldo Moro 5, 00185 Rome, Italy
L. Paggi
Affiliation:
Institute of Parasitology, University of Rome “La Sapienza”, Piazzale Aldo Moro 5, 00185 Rome, Italy
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Abstract

Enzyme electrophoresis has been used to examine genetic diversity in a population of Proteocephalus exiguus La Rue, 1911 (Cestoda: Proteocephalidae), parasitizing salmonid and coregonid fishes. Among 16 loci tested, three polymorphic loci (Ada, Got, Pgm-2) were found. Six different genotypes at the Got locus distributed in Hardy-Weinberg equilibrium suggest remarkable genetic flexibility of P. exiguus. Balancing selection is proposed as the mechanism maintaining genetic variation within the species. Data of genetic variability parameters (Ho = 0.064; He = 0.07; P = 0.19) and outcrossing rate (t = 0.842) of P. exiguus population have been provided. Possible factors affecting these data are discussed.

Type
Research Papers
Information
Journal of Helminthology , Volume 70 , Issue 4 , December 1996 , pp. 345 - 349
Copyright
Copyright © Cambridge University Press 1996

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