6533b7dafe1ef96bd126ead0
RESEARCH PRODUCT
Large Hardy-Weinberg equilibrium deviations in the Daphnia longispina of Lake El Tobar
Maria Rosa MiracleEduardo VicenteCharles E. Kingsubject
education.field_of_studyEcologyPopulationZoologyPopulation geneticsParthenogenesisBiologybiology.organism_classificationHardy–Weinberg principleDaphniaGenetic structureGenetic variabilityeducationAllele frequencydescription
The population structure of Daphnia longispina in Lake El Tobar, Spain was studied by measuring variation at the aldehyde oxidase (AO), phosphoglucose isomerase (PGI) and phosphoglucose mutase (PGM) loci in each of 1337 individuals from four collections. In 9 of the 12 comparisons between observed allele frequencies and those expected by Hardy-Weinberg equilibrium there was an excess of heterozygotes. We found 27 of the potential number of 54 composite electromorphs (‘clones’) based on the three allozymes. Clone diversities were rather high in all collections. Three clones reached frequencies of over 25% and different clones were dominant in each of the four collections. Strong temporal variation was found in the genetic structure of this Daphnia population. This variation was driven by changes in the relative frequencies of the component clones in the lake rather than by a recruitment of novel clones into the population.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-01-01 |