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Journal
2004 | 52 | 1-2 | 105-112
Article title

Effects of rearing density on larval growth and activity of digestive enzymes in Lymantria dispar L. (Lepidoptera: Lymantriidae)

Title variants
Languages of publication
EN
Abstracts
EN
Density dependent responses of 4th, 5th and 6th instar gypsy moth larvae were studied at the level of larval mass, midgut loading and activities of three digestive enzymes (alpha-amylase, trypsin and leucine aminopeptidase). High density significantly reduced larval mass while midgut loading (expressed as relative midgut mass) did not change except in the 5th instar where it was increased at high density. Specific amylase and leucine aminopeptidase activities were not affected by crowding. Specific trypsin activity was on average higher in crowded than in isolated larvae. High density also affected the correlations between midgut protein content and activities of two proteolytic enzymes suggesting differences in regulatory mechanisms of insect digestion. The importance of these changes for survival under stressful conditions is discussed.
Publisher

Journal
Year
Volume
52
Issue
1-2
Pages
105-112
Physical description
Contributors
References
Document Type
ARTICLE
Publication order reference
Jelica Lazarevic, Institute for Biological Research 'Sinisa Stankovi?', 29 Novembra 142, 11000 Belgrade, Serbia & Montenegro
Identifiers
YADDA identifier
bwmeta1.element.element-from-psjc-bf120fe2-212e-3074-8ac7-0c349f506166
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