Info

Feeding Index: * = significant antifeedant activity P < 0.05, # significant phagostimulant activity P< 0.05, 0 = no significant effect, NT = not tested (Wilcoxon matched pairs test). Methanol extracts from the aloes leaves were tested at 1000 ppm in a binary choice bioassay. Larvae (S. littoralis, 5th instar) or nymphs (L. migratoria, 5th instar) were placed singly in sealed containers with two weighed glass-fibre discs. Both discs had been treated with sucrose (0.05 M) and the treatment disc was also treated with 100 jll of one of the test extracts. The insects were removed after 12 hours or earlier if they had eaten 50% or more of one of the discs (Simmonds et al., 1990). The discs were reweighed and the amount eaten of control and treatment discs calculated. Each extract was tested against five to ten insects.

Notes

Feeding Index: * = significant antifeedant activity P < 0.05, # significant phagostimulant activity P< 0.05, 0 = no significant effect, NT = not tested (Wilcoxon matched pairs test). Methanol extracts from the aloes leaves were tested at 1000 ppm in a binary choice bioassay. Larvae (S. littoralis, 5th instar) or nymphs (L. migratoria, 5th instar) were placed singly in sealed containers with two weighed glass-fibre discs. Both discs had been treated with sucrose (0.05 M) and the treatment disc was also treated with 100 jll of one of the test extracts. The insects were removed after 12 hours or earlier if they had eaten 50% or more of one of the discs (Simmonds et al., 1990). The discs were reweighed and the amount eaten of control and treatment discs calculated. Each extract was tested against five to ten insects.

Further research into the effects of the many compounds currently being isolated from aloes (Viljoen and van Wyk, 2000; Viljoen etal, 1999, 2001, 2002) on insect feeding might assist in clarifying the ecological importance of these compounds in the ecology of aloe-insect interactions.

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Aloe and Your Health

Aloe and Your Health

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