Dietary modification of digestive physiology in larvae of almond moth (Lepidoptera: Phyticidae)

Larvae of a strain (IR) of almond moth, Ephestia cautella (Walker), originally collected from dates, were reared on dates, wheat bran, cornmeal, peanuts, or white kidney beans. Each larva was analyzed individually for activity of amylase, maltase, beta-glucosidase, caseinase (general proteinase), an...

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Bibliographic Details
Published inJournal of economic entomology Vol. 84; no. 3
Main Authors Kamin-Belsky, N. (Tel Aviv University, Tel Aviv, Israel), Wool, D
Format Journal Article
LanguageEnglish
Published 01.06.1991
Subjects
ACTIVIDAD ENZIMATICA
ACTIVITE ENZYMATIQUE
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
DIETA
DIGESTION
EPHESTIA CAUTELLA
LARVAS
LARVE
REGIME ALIMENTAIRE
SUPERVIVENCIA
SURVIE
TECHNIQUE D'ELEVAGE
TECNICAS DE CRIANZA
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Summary:Larvae of a strain (IR) of almond moth, Ephestia cautella (Walker), originally collected from dates, were reared on dates, wheat bran, cornmeal, peanuts, or white kidney beans. Each larva was analyzed individually for activity of amylase, maltase, beta-glucosidase, caseinase (general proteinase), and lipase. Larvae of two additional strains (LS and WE) were reared on dates for comparison with IR. Larvae of the three strains feeding on dates were analyzed for two additional carbohydrates: sucrase and alpha-glucosidase. Results showed that activity levels of enzymes depended on diet. Different enzymes in the same larvae responded differently to the diet. Activity levels of enzymes and characters of E. cautella related to fitness were not correlated. Activity levels of three sugar-hydrolyzing enzymes in larvae that fed on dates were higher in IR than in WE and LS strains, possibly indicating that, despite many generations of feeding on a standard laboratory diet, IR larvae may yet adapt to dates
Bibliography:9136326
J11
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/84.3.768