Premium
Genetic variation and reproductive mode in populations of Simocephalus vetulus (Branchiopoda: Cladocera) from the East Midlands of England
Author(s) -
WARD* ROBERT D.,
TOLLIT ROSALIND M.,
BICKERTON MELANIE A.
Publication year - 1991
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1991.tb00471.x
Subject(s) - cladocera , branchiopoda , biology , population , ecology , zoology , genetic variation , crustacean , demography , genetics , sociology , gene
SUMMARY. 1. Five populations of the cladoceran Simocephalus vetulus (O. F. Muller) examined by enzyme electrophoresis at four to five loci revealed high levels of genetic variation. 2. The one intermittent population had genotype frequencies in Hardy Weinberg equilibrium, the three permanent populations showed deviations from equilibrium of varying magnitude. The fifth population was fixed for a single clone, and was possibly recently derived from a single ephippial hatchling. 3. Laboratory breeding experiments confirmed that this species is a cyclic parthenogen.