Tarsal contact chemoreceptors of the black swallowtail butterfly Papilio polyxenes: responses to phytochemicals from host‐ and non‐host plants
1991; Wiley; Volume: 16; Issue: 4 Linguagem: Inglês
10.1111/j.1365-3032.1991.tb00588.x
ISSN1365-3032
AutoresPeter Roessingh, Erich Städler, Reto Schöni, Paul Feeny,
Tópico(s)Lepidoptera: Biology and Taxonomy
ResumoAbstract Tarsal contact chemoreceptors of the black swallowtail butterfly Papilio polyxenes (Lepidoptera: Papilionidae) were stimulated with leaf‐surface extracts and ethanolic extracts of whole leaves of a host‐plant (Daucus carota) and a non‐host (Brassica oleracea). Both leaf extracts evoked large numbers of spikes but stimulated different receptor neurones. It is concluded that a large difference exists between the sensory responses to host and non‐host extracts. Two chemicals, luteolin 7‐0‐(6“‐0‐malonyl)‐β‐D‐glucopyranoside and trans‐ chlorogenic acid, known to be present in the host and known oviposi‐tion stimulants for P.polyxenes , were also tested and shown to be active. No responses were found to luteolin 7‐O‐β‐D‐glucoside or to luteolin 7‐O‐β‐D‐glucuronide. These flavonoids occur in D.carota foliage, but do not stimulate oviposition.
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