Polymorphismus und Aktivitätsregulation der Esterase-2 beiEphestia kühniella

Leibenguth, F.

doi:10.1007/bf00582225

Cited by 6 publications

(2 citation statements)

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“…General experience has shown that laboratory populations of insects and mice, though inbred for many years and strongly selected for homozygosity of any mutant allele affecting coat colour, eye size or wing pattern, nevertheless exhibit polymorphism at blood protein or allozyme loci (Leibenguth, 1972;Pasteur, 1974;Watanabe et al, 1982;Yong et al, 1981). Among the mechanisms maintaining genetic polymorphism, heterosis is thought to be a major factor.…”

Section: Introductionmentioning

confidence: 99%

Heterosis in the flour moth, Ephestia k�hniella

Leibenguth

Schäfer

1984

Genetica

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Four lines of Ephestia kiihniella each homozygous for one of three different allozyme alleles at the Est-2 locus and two alleles at the Adh locus were crossed in order to study the extent of somatic, reproductive and adaptive heterosis in F I hybrids in comparison with the mean performance of the simultaneously reared inbred parent lines. With regard to adult weight and wing length (somatic heterosis) hybrids exhibit maximally 20% (males 10%) and 9% heterosis, respectively. As concerns the production of eggs and hatched larvae (reproductive heterosis) hybrids exceed the parental mean by 90% and 200%. Adaptive heterosis is realized by a shorter development period of the hybrids (maximally by 30%) as well as by significant lower variance of all metrical characters studied. In the F 2 the degree of heterosis diminishes. There is neither an excess of heterozygotes among the segregating allozyme genotypes nor superior performance of the heterozygotes concerning any one of the traits studied. Therefore, it is concluded that the pronounced heterosis in F I is not a single-gene-heterosis operating at the Est-2 and the Adh-locus.

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Section: Introductionmentioning

confidence: 99%

Heterosis in the flour moth, Ephestia k�hniella

Leibenguth

Schäfer

1984

Genetica

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“…Genetic work on electrophoretic variation in Lepidoptera enzymes has been performed mainly on esterases (Eguchi et al, 1965;Burns & Johnson, 1967Jelnes, 1971;Leibenguth, 1972).…”

Section: Introductionmentioning

confidence: 99%