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Effects of azadirachtin on post-embryonic development, energy reserves and α-amylase activity of Plodia interpunctella Hübner (Lepidoptera: Pyralidae)

Author:
Rharrabe, K., Amri, H., Bouayad, N., Sayah, F.
Source:
Journal of stored products research 2008 v.44 no.3 pp. 290-294
ISSN:
0022-474X
Subject:
insect development, storage insects, azadirachtin, instars, Plodia interpunctella, chemical concentration, larvae, pupae, mortality, weight loss, growth retardation, alpha-amylase, enzyme activity, protein content, glycogen, lipid content, nutrient reserves
Abstract:
The effects of azadirachtin on the fourth instar larvae of Plodia interpunctella (Lepidoptera) were investigated. When incorporated into the diet at 2 and 4 ppm, azadirachtin provoked larval weight loss, developmental delay and high larval and pupal mortality. Spectrophotometric assays showed that azadirachtin caused a severe reduction in protein, glycogen and lipid contents 7 days after the beginning of the treatment. In addition, α-amylase activity was reduced in larvaefed azadirachtin.
Agid:
733867