Effects of microwaves on the puffing pattern of D. melanogaster

2011 ◽  
Vol 6 (4) ◽  
pp. 524-530 ◽  
Author(s):  
Lyubov Shakina ◽  
Vladimir Pasiuga ◽  
Olexandr Dumin ◽  
Yuriy Shckorbatov
Keyword(s):  
Electromagnetic Field ◽  
Salivary Gland ◽  
Wild Type ◽  
Prepupal Stage ◽  
Experimental Conditions ◽  
Field Exposure ◽  
Lethal Mutations ◽  
Dominant Lethal ◽  
Dominant Lethal Mutations ◽  
Polythene Chromosomes

AbstractThe influence of electromagnetic field exposure on puffing pattern of salivary gland polythene chromosomes, viability and fertility of Drosophila melanogaster of the wild type Canton-S line was studied. Experimental conditions: Electromagnetic field characteristics: frequency — 36.64 GHz, power density — 0.4 W/m2, exposure time −10 seconds. Electromagnetic field exposure was conducted on the egg stage. Results: in larvae developed from the exposed eggs 3 of 8 chromosomal puffs tested (71CE, 82EF, and 83E) had significantly smaller dimensions than these in control at the prepupal stage. Viability of Drosophila estimated by the number of adult flies hatched from exposed eggs decreased, while the number of dominant lethal mutations increased. Conclusion: the exposure to a low-level microwave irradiation suppressed puffing activity at ecdysone-inducible loci of Drosophila polythene chromosomes, increased frequency of dominant lethal mutations and decreased Drosophila viability but did not influence Drosophila fertility.

scholarly journals Dominant lethal mutations induced in male mice by methyl methanesulphonate

Heredity ◽  
1964 ◽  
Vol 19 (2) ◽  
pp. 191-200 ◽  
Author(s):  
M Partington ◽  
A J Bateman
Keyword(s):  
Male Mice ◽  
Lethal Mutations ◽  
Dominant Lethal ◽  
Dominant Lethal Mutations

scholarly journals Inbreeding effects in Drosophila congenic strains: the influence of genetic background of different origin

2021 ◽  
Vol 28 ◽  
pp. 19-23
Author(s):  
O. V. Gorenskaya ◽  
V. V. Navrotskaya ◽  
N. Ye. Volkova ◽  
N. S. Filiponenko
Keyword(s):  
Life Span ◽  
Natural Population ◽  
Stress Resistance ◽  
Genetic Background ◽  
Wing Vein ◽  
Congenic Strains ◽  
Lethal Mutations ◽  
Dominant Lethal ◽  
Dominant Lethal Mutations ◽  
Reproductive Indices

Aim. To compare reproductive indices and stress resistance of Drosophila at outbreeding and inbreeding. Methods. Drosophila melanogaster congenic strains with incomplete development of the radial wing vein – radius incompletus – were used: the laboratory one and the strain, in which the mutation was placed into the genetic background of wild type strain, which originates from the natural population from radiation contaminated territory. Before the experiment strains have passed 65 generations of inbreeding. Viability (number of individuals, pupa stage mortality), dominant lethal mutations frequency and life span of imago at starvation were analysed. Results. After inbreeding, there was a decrease in the frequency of dominant lethal mutations and an increase in viability of the strain, which originates from the natural population, and a decrease of mortality at the pupal stage in both strains. Decreased life span of imago at starvation has been shown only for the inbred strain, which originates from the natural population. Conclusions. Inbreeding for 65 generations has no significant negative effect on reproductive indices; reduction of stress resistance during inbreeding has been shown only for the strain, which originates from the radiation contaminated territory. Keywords: Drosophila, viability, dominant lethal mutations, life span of imago at starvation, inbreeding.

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