Open AccessSelection index in Drosophila melanogaster Meig. progeny after exposure to acute γ-irradiation
Author(s) -
Daria A. Skorobagatko,
V. Yu. Strashnyuk,
А. А. Мазилов
Publication year - 2019
Publication title -
faktori eksperimentalʹnoï evolûcìï organìzmìv
Language(s) - English
Resource type - Journals
eISSN - 2415-3826
pISSN - 2219-3782
DOI - 10.7124/feeo.v25.1144
Subject(s) - drosophila melanogaster , biology , irradiation , selection (genetic algorithm) , ionizing radiation , andrology , melanogaster , fertility , toxicology , genetics , population , demography , gene , medicine , physics , sociology , nuclear physics , computer science , artificial intelligence
Aim. The purpose of investigation was to study the intensity of selection in two generations of Drosophila melanogaster Meig. after acute g-irradiation. Methods. Experiments were conducted on a wild-type Oregon-R strain. Adult flies in the age of 3 days were irradiated with bremsstrahlung gamma quanta at doses of 8 Gy, 16 Gy and 25 Gy on a linear accelerator of electrons LAE-10. Irradiated (O) and non-irradiated (K) flies were crossed in four different combinations: K×K (control), O×K, K×O, and O×O. The selection index were calculated from the Crow formula based on fertility, mortality/survival in pre-productive period of development. Results. Selection indexes in the generation F1 after irradiation grow in proportion to the dose received: at embryonal stage 2.0–7.2 times, at post-embryonic development – in 1.3–7.6 times. In the generation F2, the indexes of selection were significantly reduced. Conclusions. The selection pressure is substantially increased in the first generation after g-irradiation and weakens, approaching the control level and lower in F2. Keywords: Drosophila melanogaster Meig., fertility, embryonic mortality, pupae mortality, ionizing radiation.