Figure 1
The temperature-demagnetization curves determined from the abdomen and cephalothorax (head+thorax including the antennae) of the macropterous and brachypterous of female and male adult brown planthoppers (BPH), Nilaparvata lugens.
The determination of temperature-demagnetization curves (T = 10 ~ 300 K) was carried out using a Superconducting Quantum Interference Magnetometer as described in the “Materials and methods” and the measurements show the process of the test materials retreating to zero from the remanent magnetization. Saturation remanence acquired in a 5T magnetic field at 10 K was demagnetized and measured by warming from 10 to 300 K. Twenty replicate samples of individual abdomen or cephalothorax for either form of adult BPH were used for the magnetic measurements. The arrows denote the turning points of the curves as detected at T = 220 K.
