Yasuyuki Honda

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Males of the chestnut tiger butterfly, Parantica sita, secrete danaidone as a major component from the alar androconial organ (sex brand). Since danaidone has been postulated to be derived from various pyrrolizidine alkaloids (PAs), which males ingest as adults from PA-containing plants, we conducted oral administration tests of several PAs to examine their(More)
Two compounds, 9,10-epoxytetrahydroedulan (ET) and viridiflorine beta-lactone (VL), were identified as major components from the hairpencils of field-caught males of a danaid butterfly, Euploea mulciber. By contrast, laboratory-reared males entirely lacked VL, but possessed a significant quantity of ET. Various feeding experiments with larvae and indoor(More)
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