Figure 2
The hysteresis loop determined from the abdomen and cephalothorax (head+thorax including the antennae) of adult BPHs, Nilaparvata lugens.
The macropterous and brachypterous female and male adults were tested for the presence of magnetic materials in abdomen and cephalothorax. Low-temperature hysteresis loops at T = 10 K were measured between ±3 T with an averaging time of 100 ms using a Superconducting Quantum Interference Magnetometer as described in “Materials and methods”. Twenty replicate samples of individual abdomen or cephalothorax for either form of adult BPH were used for the magnetic measurements.
