Physiological Effects Of Rare Earth Element And Pulsing Magnetic Fields On Tenebrio Molitor L.

Tenebrio molitor L. is a kind of insect rich in nutrition and easy of rearing, it is mainly used to be the fodder protein additive of economic animals. It is reported that the treatment of suitable dosages of rare earth element and pulsing magnetic fields had fine biologic effects on some animals and plants, but their effects on Tenebrio molitor L. have not been studied.Feeding Tenebrio molitor L. with the fodder containing different dosages of rare earth element, the result showed that the important physiological indexes of Tenebrio molitor L changed remarkbly when adding 100 mg La2O3 to per kilogram fodder. 1. In terms of productive capacity, the larval growth rate quickened notably and the larval survivability increased in a certain extent. 2. In terms of anti-adversity, the larval ability of resisting high temperature and injury improved notably. The larval ability of resisting low temperature and bacteria increased in a certain extent. 3. In the terms of the female, their oviposition started two days earlier and the oviposition period shortened five days, the numbers of eggs laid increased notably. The result also showed that the cumulation of rare earth element in the body of the beetle was very little and the main nutrition contents did not change notably.Disposing each growth phase of the beetle with different frequency of pulsing magnetic fields, the result showed that the effect of pulsing magnetic fields on the adult was obvious. In the combined effects of the stable magnetic fields(50-120mT intensity) and the pulsing magnetic fields(50Hz frequency), the survivability of the adult decreased notably.The oviposition period of the female shortened ten days, the numbers of eggs laid decreased notably.