Figure 4
Transmission electron micrographs (TEM) showing fine structures of magnetite particles in the abdomens of macropterous and brachypterous female and male adult of BPHs, Nilaparvata lugens.
A large magnetite-containing spherule (arrow, dense dotted vesicle) was identified in macropterous female adults (A); A magnetite-containing empty vesicle shows iron aggregates (arrow) in macropterous male adults (B), brachypterous female adults (C) and male adults (D). The samples were selected from a series of 35 consecutive ultrathin sections cut out of one unstained semi-thin section between two adjacent Prussian Blue-stained semi-thin sections. More than 150 grids were used for counting for each insect stage, sex and wing form. Bar = 1μm.
