Behnaz Ghaedi

 

ResearchGate - Behnaz Ghaedi

 

Behnaz has just finished the final experiments of her PhD project assessing the thermal tolerances of aphids (Myzus persicae). She has investigated the effect of repeated high temperature on many physiological characters such as thermal tolerance, respiration, and osmolytes such as polyols and sugars.

 

Behnaz has been assessing the overall costs and benefits of repeated high temperatures in aphids by subjecting individuals to either a single sustained heating (at 38°C) or multiple heating with 24h recovery: to examine the physiological consequences of repeated high temperature with recovery. Using chemically defined diets, she has been revealing the central role of sucrose concentration, amino acid concentration and composition, and sucrose: amino acid ratio in shaping aphid performance, and examining the effect of these vital compounds on physiological character at high temperature.

Behnaz used three artificial diets which are different in amino acid and sucrose concentration at for our experimental diets and to investigate their impacts on critical temperatures tolerance. Finally Behnaz has been investigating the costs and benefits of different time of recovery between high temperature conditions by measurement important compounds and their thermal tolerance.