Spodoptera frugiperda, fall armyworm

A series of six quassinoids isolated from Simaba multiflora and Soulamea soulameoides were shown to be active as growth inhibitors and as antifeedants against Heliothis virescens (cotton budworm) and Spodoptera frugiperda (fall armyworm) (Klocke et al., 1985). 

Cuts from the silica gel column were incorporated into artificial diets optimized for several economically-important agricultural pest insects, the pink bollworm Pectinophora gossypiella> the tobacco budworm Heliothis virescens> the corn earworm H. zea and the fall armyworm Spodoptera frugiperda. > Monitoring with this artificial diet bioassay, further column chromatography and preparative TLC on silica gel in diethylether-petrol yielded five... 

Our initial studies (25,26) determined the comparative fate of a radiocarbon-labeled preparation of the commonly occurring linear furanocoumarln, xanthotoxln (8-methoxypsoralen) in black swallowtail caterpillars and in fall armyworm (Spodoptera frugiperda J. E. Smith) larvae. Black swallowtail caterpillars are known not to be adversely affected by linear furanocoumarlns (22), while Spodoptera spp. avoid such plants as food sources... 

Figure 2. Major metabolites of xanthotoxin (8-methoxypsoralen) in last-stage larvae of the black swallowtail butterfly (Papilio polyxenes) and the fall armyworm (Spodoptera frugiperda).

Sf-9 cells are derived from the IPLBSF-21 cell line, isolated by Vaughn et al. (1977) from pupal ovarian tissue of the fall armyworm Spodoptera frugiperda. This cell line is commonly used for bioproduct expression employing baculovirus as vectors, similarly to the High-Five cell line. 

McCord, E., Jr. and Yu, S.J., Mechanisms of carbaryl resistance in the fall armyworm, Spodoptera frugiperda (J. E. Smith), Pestic. Biochem. Physiol., 27,114,1987. 

These compounds were tested against a series of Lepidoptera imder standard laboratory procedures. Activity on diamondback moth (PluteUa xylostdla, Px), fall armyworm (Spodoptera frugiperda, Sf), and tobacco budworm (Heliothis virescens, Hv) was evaluated. Insecticidal potency is reported as the LCjq in ppm. Comparison of the insecticidal activity for compounds D1-D3 identifies several key structural features of importance (Table 1). Our initial lead compoimd D1 was effective on the species S/and Px with LCjq values of 68.9 and 16.8, respectively, but with no activity on Hv. Incorporation of a 2-methyl group on the benzamide,... 

Fig. 29.3.8. Control of fall armyworm Spodoptera frugiperda) in maize with DE-175 and spinosad, each applied at 24 and 48 g active ingredient per Ha.

Clay, K. and G. P. Cheplick, Effect of ergot alkaloids from fungal endophyte-infected grasses on fall armyworm (Spodoptera frugiperda), J. Chem. Ecol., 15, 169-182 (1989). 

However, mature female bolas spiders, Mastophora sp., attract males of the fall armyworm, Spodoptera frugiperda, with a volatile substance that apparently mimics the female sex attractant of this species (Eberhard, 1977). 

Extracts from leaves of L. montanus, L. aschenbornii, L. stipulatus grown in Mexico showed insecticidal activity toward larvae of the Fall Armyworm (Spodoptera frugiperdd) [57]. The extracts of L. montanus and L. aschenbornii contain sparteine as the major constituent, while the major alkaloids in L. stipulatus extract are aphylline and an epiaphyUme-Uke alkaloid. This last one was found to be the most effective against larvae of S. frugiperda. Extracts of L. montanus and L. aschenbornii were found to have toxicity similar to sparteine [57]. 

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