Temperature-dependent Development Model of Larvae of Mealworm beetle, Tenebrio molitor L. (Coleoptera: Tenebrionidae)

The developmental times of mealworm beetle larvae, Tenebrio molitor were studied at six temperatures ranging from 15 to with 60~70% RH, and a photoperiod of 14L:10D. Mortality of larval period was very low at 17 and but did not die over . Developmental time of larva was decreased with increasing temperature. The total developmental time of T. molitor larvae was longest at (244.3 days) and shortest at (110.8 days). Egg and larvae were not developed at . The lower developmental threshold and effective accumulative temperatures for the total larval stages were and 2564.1 degree-days, respectively. The relationship between developmental rate and temperature was fitted by a linear model and nonlinear model of Logan-6(