Influence of hypercapnia on resistance to stress and spontaneous locomotor activity of Drosophila melanogaster different lines

Abstract

The effect of hypercapnia for resistance to fruit flies hyperthermic stress, life expectancy at alimentary and water deprivation and spontaneous locomotor activity. Canton-S and Oregon-R test Drosophila lines were divided into low and high are resistant to the action of carbon dioxide and contained in hypercapnic gas medium (5 % CO2) for seven generations. Under the influence of hypercapnia increased resistance to fruit flies hyperthermic stress. Life expectancy line Drosophila Canton-S high are resistant to the action of CO2 alimentary conditions of water deprivation increased 5 % and time of extinction of a half of individuals to 19 % compared with the control. In Drosophila line Oregon-R low and high are resistant to the action of CO2. the average life expectancy had a tendency to decrease i7-8 % compared with the control. It is shown that the spontaneous motor activity of both drosophila lines highly resistant to CO2 was higher compared to the low resistant. The number of flies with a positive phototaxis after adaptation to hypercapnia reduced in Drosophila all the experimental groups.

Keywords

• hypercapnia
• hyperthermal stress
• alimentary and water deprivation
• phototaxis