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Effects of two juvenile hormone analogues on hemolymph and fat-body metabolites of the eastern spruce budworm, Choristoneura fumiferana (Clemens) (Lepidoptera; Tortricidae)

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Abstract

Sixth-instar larvae of Choristoneura fumiferana were treated with LD50 concn of the juvenile hormone analogues fenoxycarb and methoprene. Fenoxycarb caused an initial decrease, then an increase, in haemolymph concn. Fat-body glycogen was depleted initially, then relatively increased in concn towards the end of the 6-day experimental period. Methoprene caused an opposite effect on haemolymph carbohydrates, but a similar effect on fat-body glycogen. Both treatments decreased protein concn. Fenoxycarb initially decreased, and then increased, the concn of fat-body soluble protein and initially increased and then decreased fat-body lipids. Methoprene decreased lipid concn in the haemolymph after 96 h. Lipid concn in methoprene-treated insects was initially greater, then less, and finally greater than that in controls..RE: 26 ref.; RN: 72490-01-8; 40596-69-8; SC: CA; TR; PE; 0ESource type: Electronic(1

Topics: Insect growth regulators--Insect pests--Pesticides--insecticides--effects--Fenoxycarb--Methoprene--agricultural entomology--Tortricidae--Lepidoptera--Choristoneura fumiferana--insects--arthropods--invertebrates--animals--Choristoneura--Pesticides and Drugs General--Pests Pathogens and Biogenic Diseases of Plants
Publisher: 'Canadian Science Publishing'
DOI identifier: 10.1139/z93-159
OAI identifier: oai:islandscholar.ca:ir_ir-batch6-1164
Provided by: IslandScholar
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