The Journal of Insect Science: Volume 4/Article 38/Figure 1

Figure 1. Fungus Development Index (FDI) for Trinidadian strains of Paecilomyces fumosoroseus (Pf) on fourth-instar nymphs of Trialeurodes vaporariorum.

A Nongerminated blastospores of Pf in suspension drop which surrounds nymph. FDI = 0.0 (magnification, 200×)
Figure 1A

B Germination of Pf blastospores with one or more germ tubes. FDI = 0.5 (magnification, 400×)
Figure 1B

C Initial sporulation, first conidiospore is present on the surface of the nymph and in the in area surrounding the nymph. Note the hyphal branching with conidia. FDI = 2.5 (magnification, 400×)
Figure 1C

D Initial fungal outgrowth from killed host. Nymph infected with Pf fungal hyphae with conidia. Red eyes are still visible. FDI = 2.5 (magnification, 100×)
Figure 1D

E Pf conidia developed on phailides. Note whorled branching of hyphae with conidia. Sporulation completed on at least 4 areas on nymph where conidia have developed on phailides. FDI = 3.0 (magnification, 400×)
Figure 1E

F Fungal outgrowth from killed host. Sporulation completed. Nymph is covered with mycelium and conidia. Note eyes and nymph are not visible. FDI = 3.0 (magnification, 50×)
Figure 1F