The supercooling and high temperature stupor points of the adult lesser mealworm Alphitobius diaperinus(Coleoptera: Tenebrionidae)

摘要: Abstract Potential thermobiological limits in adult lesser mealworms Alphitobius diaperinus were assessed during winter by measuring individual supercooling points (SCP) and thermostupor (TSP). Two experimental conditions tested: (i) SCP TSP measured at 100% r.h.; (ii) with specimens which survive to the 0% r.h.. The absolute temperature range compatible life between two TSP, termed span (TBS), was calculated both conditions. potential adaptive capacity withstand cooling overheating is: r.h., mean TSP=46.7°C (SD±0.67); SCP=−9.4°C (SD±1.81); TBS 56.1°C; TSP=47.4°C (SD±0.61); SCP=−12.3°C (SD±2.5); 59.7°C (SD±2.43). r.h. is reached a loss of 3.84% fresh weight vs 1.15% difference (females=2.1°C; males=5.4°C) obtained dry or moist could also be explained influence heat shock preceding A decrease water content may increase osmolarity body fluid thus an adaptation avoid freezing. Supercooling allows adults areas where freezing temperatures occur poultry houses more specially litter removals when beetles migrate overwinter soil floor insulation materials building walls. tolerance mainly ruled physiological behavioural adaptations this species. Our results suggest that population A. controlled increasing above 48°C.