Open AccessGenetic studies of Gammarus
Author(s) -
SIEGISMUND HANS REDLEF
Publication year - 1985
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1985.tb00622.x
Subject(s) - biology , locus (genetics) , genetics , allele , population , heterozygote advantage , natural selection , genotype , selection (genetic algorithm) , disruptive selection , allele frequency , population genetics , evolutionary biology , gene , demography , artificial intelligence , sociology , computer science
The population of the marine amphipod Gammarus oceanicus at Vosnæs, Denmark, is polymorphic at the two unlinked enzyme loci mannosephosphate isomerase. Mpi, and glucosephosphate isomerase, Gpi. These polymorphisms were subjected to a selection component analysis, where the components gametic selection, zygotic selection, and sexual selection were estimated in both sexes and where the mating pattern was described. At the Gpi locus no evidence of the action of natural selection was found. The genotypic distribution among the adult population at the Mpi locus did not agree with the expected distribution under the assumption of no selection. A significant deficit of heterozygotes was found. This deviation, however, is explained by the segregation of a silent allele.