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Azamacrolides: a family of alkaloids from the pupal defensive secretion of a ladybird beetle (Epilachna varivestis).
TLDR
Defensive droplets from glandular hairs of the pupa of the Mexican bean beetle contain a group of structurally novel alkaloids, the azamacrolides, which are shown to be (5Z)-11-propyl-12-azacyclotetradec-5-en-14-olide and trace amounts of three closely related components.
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Defensive secretion ofTenebrio molitor (Coleoptera: Tenebrionidae)
TLDR
The defensive secretion ofTenebrio molitor contains a mixture of 2-methyl-1,4-benzoquinone andm-cresol that failed to detect the latter quinone in secretion samples from three laboratory populations of T. molitor.
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Alkaloids of the Mexican bean beetle, Epilachna varivestis (Coccinellidae)
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Use of qPCR-Based Cercariometry to Assess Swimmer’s Itch in Recreational Lakes
Swimmer’s itch (cercarial dermatitis) is a nuisance encountered by bathers and recreational water users worldwide. The condition is caused by the penetration of larval digenean trematodes (cercariae)…
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Efficacy of Praziquantel in Treating Natural Schistosome Infections in Common Mergansers
TLDR
Fifty-one common mergansers were captured on Douglas Lake and their avian schistosome loads were determined by fecal examination and the potential use of praziquantel in swimmer's itch control programs is discussed.
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Impairment of retinal function in yellow perch (Perca flavescens) by Diplostomum baeri metacercariae
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Biosynthesis of a defensive insect alkaloid: epilachnene from oleic acid and serine.
TLDR
GC/MS and GC/IR studies of alkaloid produced by Epilachna fed with deuteriated oleic acid show that oleoic acid loses four carbon atoms from its carboxyl end during the biosynthesis.
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Impairment of the chemical defence of the beetle, Tenebrio molitor, by metacestodes (cysticercoids) of the tapeworm, Hymenolepis diminuta
TLDR
The defensive glands of beetles, Tenebrio molitor, infected with metacestodes (cysticercoids) of Hymenolepis diminuta are everted less frequently upon stimulation, and contain less toluquinone (methylbenzoquinone) and m-cresol, than glands of uninfected controls, which increase the likelihood that both cysticers and beetles will be ingested by the tapeworm's definitive host.
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Chilocorine: heptacyclic alkaloid from a coccinellid beetle
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Chemical defense of an ozaenine bombardier beetle from New Guinea
TLDR
Pseudozaena orientalis opaca, an ozaenine carabid beetle from New Guinea, is studied on the biology and chemistry of its defensive spray mechanism.
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