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  • 1
    Electronic Resource
    Electronic Resource
    Comparative electrophysiological analysis of plant odor perception in females of threePapilio species (1994)
    Springer
    Chemoecology 5-6 (1994), S. 26-36 
    Details
    ISSN: 1423-0445
    Keywords: chemoreception ; olfaction ; plant volatiles ; electroantennogram ; combined GC-EAG ; evolutionary adaptation ; Lepidoptera ; Papilionidae ; Papilio polyxenes ; Papilio machaon hippocrates ; Papilio troilus ; Apiaceae ; Daucus carota ; Pastinaca sativa ; Asteraceae ; Artemisia dracunculus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Antennae of femalePapilio butterflies perceive many volatile plant constituents with widely differing, constituent-specific sensitivities. We compared the responses of threePapilio species to volatiles from host and non-host plants to assess species-specificity and the degree of evolutionary conservatism in olfactory responses. Since previous studies had demonstrated that the polar constituents in odor fromDaucus carota stimulate oviposition behavior inPapilio polyxenes, we collected headspace volatiles fromD. carota, Pastinaca sativa (both Apiaceae) andArtemisia dracunculus (Asteraceae) and separated the polar fraction of these volatiles by gas chromatography. GC-coupled electroantennograms (GC-EAG) were recorded from the speciesPapilio polyxenes, P. machaon hippocrates andP. troilus. In addition, the responses of the three species to five compounds known as generally occurring constituents of plant odor were recorded. The relative sensitivities for these compounds were nearly identical in all threePapilio species. The response spectra to the separated plant volatiles also showed considerable similarities among the species. From the limited set of GC peaks evoking a response in one of the species, 64% (D. carota), 44% (P. sativa) and 29% (A. dracunculus) also evoked a response in both of the other species. The responses of the two closely related Apiaceae feeders (P. polyxenes, P. m. hippocrates) to volatiles fromD. carota were more similar to each other than was either to the response ofP. troilus, which feeds on Lauraceae. However, this was not true for the responses to volatiles fromP. sativa. The least congruence among the three species was found in the responses to volatiles fromA. dracunculus, a non-host for all of them. The differences and similarities found in the response profiles of the threePapilio species are discussed with respect to evolutionary adaptation to host odor versus evolutionary conservatism in adaptation of olfactory receptors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01259970
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  • 2
    Electronic Resource
    Electronic Resource
    Oviposition stimulants for the black swallowtail butterfly: Identification of electrophysiologically active compounds in carrot volatiles (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 919-937 
    Details
    ISSN: 1573-1561
    Keywords: Papilio polyxenes ; Papilionidae ; Lepidoptera ; Daucus carota ; Apiaceae ; host-plant selection ; oviposition behavior ; electroantennogram ; combined GC-EAG ; plant volatiles ; sabinene hydrate ; 4-terpineol ; bomyl acetate ; (Z)-3-hexenyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Headspace volatiles were collected from undamaged foliage of carrot,Daucus carota, a host-plant species of the black swallowtail butterfly,Papilio polyxenes. The volatiles were fractionated over silica on an open column, and the fractions were tested in behavioral assays withP. polyxenes females in laboratory experiments. The polar fractions, as well as the total mixture of volatiles, increased the landing frequency and the number of eggs laid on model plants with leaves bearing contact-oviposition stimulants. The nonpolar fraction, containing the most abundant compounds in carrot odor, was not stimulatory. Gas Chromatographic (GC) separation of the fractions was coupled with electroantennogram (EAG) recordings to identify the compounds perceived byP. polyxenes females. The EAG activity corresponded to the behavioral activity of the fractions. None of the nonpolar compounds, identified as various monoterpenes, evoked a major EAG response, but several constituents of the polar fractions elicited high EAG responses. Sabinene hydrate (both stereoisomers), 4-terpineol, bomyl acetate, and (Z)-3-hexenyl acetate were identified by GC-MS as active compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00992528
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of plant odor on oviposition by the black swallowtail butterfly,Papilio polyxenes (Lepidoptera: Papilionidae) (1989)
    Springer
    Journal of insect behavior 2 (1989), S. 803-827 
    Details
    ISSN: 1572-8889
    Keywords: oviposition behavior ; black swallowtail butterfly ; Papilio polyxenes ; carrot volatiles ; Daucus carota ; olfactory chemoreception
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Black swallowtail females laid more eggs on plant models treated with contact stimulants and volatiles from carrot leaves than on models treated only with contact stimulants. The volatiles enhanced landing rates and females alighted more frequently on artificial leaves treated with host volatiles than on adjacent control leaves. Volatiles from cabbage, a nonhost, inhibited landing rates on artificial leaves treated with carrot contact stimulants. Examination of antennae revealed two major types of sensilla, believed to be olfactory in function. Electroantennogram preparations responded more strongly to carrot volatiles than to cabbage volatiles and several shared responses at particular retention times to carrot volatile components eluting from a gas chromatograph. Our results are consistent with a long-standing hypothesis that behavioral responses to essential oil components characteristic of the larval food plants have facilitated host shifts in the genus Papilio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01049402
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