Allomonal and hepatotoxic effects following methyl eugenol consumption in Bactrocera papayae male against Gekko monarchus

Authors
Citation
Sl. Wee et Kh. Tan, Allomonal and hepatotoxic effects following methyl eugenol consumption in Bactrocera papayae male against Gekko monarchus, J CHEM ECOL, 27(5), 2001, pp. 953-964
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
JOURNAL OF CHEMICAL ECOLOGY
ISSN journal
0098-0331 → ACNP
Volume
27
Issue
5
Year of publication
2001
Pages
953 - 964
Database
ISI
SICI code
0098-0331(200105)27:5<953:AAHEFM>2.0.ZU;2-X
Abstract
Methyl eugenol (ME), is converted into two major phenylpropanoids, 2-allyl- 4,5-dimethoxyphenol and trans-coniferyl alcohol, following consumption by t he male fruit fly Bactrocera papayae. Chemical analysis of wild male B. pap ayae rectal glands, where the compounds are sequestered, revealed the prese nce of ME metabolites in varying quantities. These phenylpropanoids are sho wn to be involved in the fruit fly defense both in no-choice and choice fee ding tests against the Malayan spiny gecko, Gekko monarchus. After being ac climatized to feeding on fruit flies, geckos consumed significantly fewer M E-fed male flies than controls that consumed all the ME-deprived male flies offered throughout a two-week period. Diagnosis of dissected livers from g eckos that consumed ME-fed male flies revealed various abnormalities. These included discoloration and hardening of liver tissue, whitening of the gal lbladder, or presence of tumorlike growths in all geckos that consumed ME-f ed male flies. Control geckos fed on ME-deprived male flies had healthy liv ers. When given an alternative prey, geckos preferred to eat untreated hous e flies, Musca domestica to avoid preying on ME-fed fruit flies.