The Efficacy of Garlic Extraction on Some Physiological Parameters in Colorado Potato Beetle, Leptinotarsa decemlineata Say. (Col.: Chrysomelidae)

In this research, the effects of garlic extraction (GE) on energy resources and cold hardening was surveyed in adults of potato Colorado beetle (PCB). Second larvae instars with 24h old were selected and fed daily with potato leaves treated with various concentrations of garlic extracted (%50, %25, %15, %5 and %0 (as control)) untill to pupated. After adults emerged, they were fed with non-treated leaves during a week. Then energy sources (Sugar, glycogen and lipid) of four males and females, separately, were determined in milligram per gram of dry weight. Also the effects of various concentrations of GE (%50, %25, %10, %2.5 and %0) on the super cooling point (SCP) were measured. Results indicated the significant effects of GE on total lipid and sugar (p