In vitro: |
J Chem Ecol. 1995 Oct;21(10):1541-8. | A neolignoid feeding deterrent againstLuehdorfia puziloi larvae (lepidoptera: Papilionidae) fromHeterotropa aspera, a host plant of sibling species,L. japonica.[Pubmed: 24233682 ] | METHODS AND RESULTS:
A feeding deterrent against larvae of a papilionid butterfly,Luehdorfia puziloi (Parnassiinae), a specialist on Asiasarum plants (Aristolochiaceae), was isolated from another aristolochiaceous plant,Heterotropa aspera. Antifeedant activity was exhibited by then-hexane-soluble fraction that proved to contain at least two active components.
CONCLUSIONS:
One of the deterrents was identified as a neolignan compound, Asatone. The concentration of Asatone in H. aspera was estimated at approximately 225 ppm, and larval feeding ofL. puziloi was significantly deterred at concentrations over 90 ppm. By contrast, Asatone was not detectable (< 1 ppm, if any) in its host plant,Asiasarum sieboldii. |
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