Consequences of selection in highly inbred Drosophila strains

Iovleva, O. V.; Mylnikov, S. V.

doi:10.1134/s1022795407100043

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…Their content and exchange also differ in females and males. In our study, an example is the LA inbred line, which is characterized by a reduced level of JH in the hemolymph (Kaidanov et al 1997;Iovleva and Myl'nikov 2007). This correlates with extremely low values of polyteny in this line.…”

Section: Discussionmentioning

confidence: 99%

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Variability of polyteny of giant chromosomes in Drosophila melanogaster salivary glands

2022

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Polyteny is an effective mechanism for accelerating growth and enhancing gene expression in eukaryotes. The purpose of investigation was to study the genetic variability of polyteny degree of giant chromosomes in the salivary glands of Drosophila melanogaster Meig. in relation to the differential tness of different genotypes. 16 strains, lines and hybrids of fruit ies were studied. This study demonstrates the signi cant in uence of hereditary factors on the level of polytenization of giant chromosomes in Drosophila. This is manifested in the differences between strains and lines, the effect of inbreeding, chromosome isogenization, hybridization, adaptively signi cant selection, sexual differences, and varying degrees of individual variability of a trait in different strains, lines, and hybrids. The effect size of the genotype on the degree of chromosome polyteny in Drosophila salivary glands was 45.3%, the effect size of sex was 9.5%. The data obtained allow us to conclude that the variations in the level of polyteny should be considered as a manifestation of the structural and functional polymorphism of giant chromosomes, which is an essential factor in the differential tness of ies and has a selective value.

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Section: Discussionmentioning

confidence: 99%

“…High-activity (HA) line -highly inbred line, obtained by Kaidanov from the LA line by inbreeding and selection for the high sexual activity of males (Kaidanov et al 1997;Iovleva and Myl'nikov 2007). The degree of inbreeding at the beginning of the experiment was more than 600 generations.…”

Section: Biological Materials and Experimental Conditionsmentioning

confidence: 99%

Variability of polyteny of giant chromosomes in Drosophila melanogaster salivary glands

2022

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“…Such mutations affect viability, either decreasing (lethal and semi‐lethal mutations) or increasing (supervital mutations) its level (Kaidanov et al 1997). The manifestation of such mutations and their maintenance at a high level are determined not only by the action of inbreeding, but also by the nature and direction of selection that accompanies it (Iovleva and Mylnikov 2007).…”

Section: Introductionmentioning

confidence: 99%

Transgenerational effects in offspring of chronically irradiated populations of Drosophila melanogaster after the Chernobyl accident

Yushkova

Bashlykova

2020

Environ and Mol Mutagen

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The zone of the Chernobyl nuclear disaster represents the largest area of chronic low-intensity radioactive impact on the natural ecosystems. The effects of chronic low-dose irradiation for natural populations of organisms and their offspring are unknown. The natural populations of Drosophila melanogaster sampled in 2007 in Chernobyl sites with different levels of radiation contamination were investigated.

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Variability of polyteny of giant chromosomes in Drosophila melanogaster salivary glands

Strashnyuk

Shakina

Skorobagatko

2022

Preprint

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Polyteny is an effective mechanism for accelerating growth and enhancing gene expression in eukaryotes. The purpose of investigation was to study the genetic variability of polyteny degree of giant chromosomes in the salivary glands of Drosophila melanogaster Meig. in relation to the differential fitness of different genotypes. 16 strains, lines and hybrids of fruit flies were studied. This study demonstrates the significant influence of hereditary factors on the level of polytenization of giant chromosomes in Drosophila. This is manifested in the differences between strains and lines, the effect of inbreeding, chromosome isogenization, hybridization, adaptively significant selection, sexual differences, and varying degrees of individual variability of a trait in different strains, lines, and hybrids. The effect size of the genotype on the degree of chromosome polyteny in Drosophila salivary glands was 45.3%, the effect size of sex was 9.5%. The data obtained allow us to conclude that the variations in the level of polyteny should be considered as a manifestation of the structural and functional polymorphism of giant chromosomes, which is an essential factor in the differential fitness of flies and has a selective value.

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Consequences of selection in highly inbred Drosophila strains

Cited by 4 publications

References 9 publications

Variability of polyteny of giant chromosomes in Drosophila melanogaster salivary glands

Variability of polyteny of giant chromosomes in Drosophila melanogaster salivary glands

Transgenerational effects in offspring of chronically irradiated populations of Drosophila melanogaster after the Chernobyl accident

Variability of polyteny of giant chromosomes in Drosophila melanogaster salivary glands

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