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  • 1
    Electronic Resource
    Electronic Resource
    Unique sex chromosome mediated behavioral response specificity of hybrid male European corn borer moths (1991)
    Springer
    Cellular and molecular life sciences 47 (1991), S. 980-984 
    Details
    ISSN: 1420-9071
    Keywords: European corn borer ; Ostrinia nubilalis ; sex pheromone polymorphism ; interracial hybrids ; F1 male-response profiles ; flight tunnel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Unlike the narrow response windows exhibited by the parent races, hybrid male European corn borers resulting from crosses of the E and Z races respond to a wide range of sex pheromone blends. The F1 response profile consists of some individuals that respond to both the Z pheromone and the 65∶35 E/Z blend produced by F1 females. Some F1 males fail to respond to any blend and some do not respond as broadly as others. The hybrid male populations, however, are not tuned optimally to the pheromone blend produced by F1 females and there is no coupling of F1 blend production and response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01929897
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  • 2
    Electronic Resource
    Electronic Resource
    Pheromone behavioral responses in unusual male European corn borer hybrid progeny not correlated to electrophysiological phenotypes of their pheromone-specific antennal neurons (1995)
    Springer
    Cellular and molecular life sciences 51 (1995), S. 809-816 
    Details
    ISSN: 1420-9071
    Keywords: European corn borer ; Ostrinia nubilalis ; flight tunnel ; single-cell electrophysiology ; genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract In genetic studies on the sex pheromone communication system of two races of European corn borer, which use opposite pheromone blends of the E and Z compounds, it was found that antennal olfactory cell response amplitudes to the two compounds were controlled by an autosomal factor, whereas behavioral responses to the blends were controlled by a sex-linked locus. Because of the difference in genetic controls, it was postulated that some unusual males would be produced in F2 crosses between these two races. These unusual males would have antennal olfactory cells that respond as the Z-race males, but would respond behaviorally to the E blend. The present studies combined behavioral studies in a flight tunnel and single cell electrophysiological studies to show that these unusual males do indeed exist. These findings show that the spike amplitude of peripheral olfactory cells is not important in regulating species- or race-specific pheromone responses, as compared to some central nervous system factor assesses the spike frequencies from different pheromone-component-specific cells on the antenna. This factor seems to be essential in governing the pheromone-blend specific behavioral responses of male moths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01922435
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  • 3
    Electronic Resource
    Electronic Resource
    Ethological function of components of a sex attractant system for oriental fruit moth males,Grapholitha molesta (Lepidoptera: Tortricidae) (1975)
    Springer
    Journal of chemical ecology 1 (1975), S. 475-491 
    Details
    ISSN: 1573-1561
    Keywords: Tortricidae ; Grapholitha molesta ; Oriental fruit moth ; sex pheromone ; attractant ; Synergist ; hairpencil ; aphrodisiac ; cis-8-dodecenylacetate ; trans-8-dodecenylacetate ; dodecylalcohol ; cis-8-dodecen-1-ol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Field studies of male Oriental fruit moth,Grapholitha molesta (Busck), behavior indicated that a mixture of cis-8-dodecenyl acetate (c8-12∶Ac) and ca. 7% trans-8-dodecenyl acetate (t8-12∶Ac) was requisite for upwind anemotaxis. The simultaneous emission of dodecyl alcohol (12∶OH) and the attractant blend of c8-12∶Ac containing ca. 7% t8-12∶Ac elicited a behavioral repertoire including close-range orientation, landing near the chemical source, wing fanning, and extrusion of the males' abdominal hairpencils in precopulatory display. The effect of 12∶OH in increasing trap catches was, therefore, not due to its effect on upwind anemotaxis, but rather to its importance in eliciting landing and other close-range precopulatory behavior. Interestingly, cis-8-dodecen-1-ol in extremely low ratios to the attractants (1∶333) appeared to duplicate the activity of 12∶OH used in ratios of 3∶1 to the attractants. Laboratory observations of mating sequences revealed that male hairpencil eversion always preceded copulation. The evidence supports a male response sequence based on specific component combinations and concentrations eliciting successive behavioral steps rather than a response hierarchy dependent on increases in concentration of a single chemical or blend. Additionally, the closeness of the males' approach to c8-12:Ac containing ca. 7% t8-12:Ac was optimal at a discrete emission rate, and male responses were diminished within 30–60 sec after the males' arrival at the attractant source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988588
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  • 4
    Electronic Resource
    Electronic Resource
    Hairpencil pheromone components of male oriental fruit moths,Grapholitha molesta (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 947-959 
    Details
    ISSN: 1573-1561
    Keywords: Hairpencil ; pheromone ; Grapholitha molesta ; Lipidoptera ; Tortricidae ; Oriental fruit moth ; ethyltrans-cinnamate ; mellein ; methyl jasmonate ; methyl 2-epijasmonate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract MaleGrapholitha molesta hairpencil components are ethyltrans-cinnamate, mellein, methyl jasmonate, and methyl 2-epijasmonate. The natural behavioral effect elicited by hairpencil-displaying males during courtship in attracting sex-pheromone-releasing females from several centimeters away can be duplicated by mixtures of ethyltrans-cinnamate in various combinations with the other components.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987661
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  • 5
    Electronic Resource
    Electronic Resource
    Comparative analysis of sex-pheromone-response antagonists in three races of European corn borer (1989)
    Springer
    Journal of chemical ecology 15 (1989), S. 863-873 
    Details
    ISSN: 1573-1561
    Keywords: European com borer ; Ostrinia nubilalis ; Pyralidae ; Lepidoptera ; (Z)-9-tetradecenyl acetate ; pheromone ; flight tunnel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Behavioral responses of males from three New York races of European corn borer,Ostrinia nubilalis (Hübner), to various suspected sexpheromone-response antagonists were investigated with a flight tunnel protocol. Males from a bivoltine (Z) race and from a univoltine (Z) race utilizing a natural pheromone blend of 98∶2 (Z)-∶(E)-11-tetradecenyl acetates and males from a bivoltine (E) race utilizing a 1∶99 (Z)-∶(E)-11-tetradecenyl acetate ratio were flown to their natural blends and to blends containing 1 % of one of the following additional compounds: Z9–12∶OAc,E9–12∶OAc,Z9–14∶OAc, andE9–14∶OAc. In each race, the added components lowered significantly the number of individuals completing the behavioral sequence. The only exception was bivoltineE males flown to a blend withE9–12∶OAc added. The number completing the sequence in this case was statistically not significantly lower than the number that completed the sequence to the standard blend. In all three races, theZ9–14∶OAc produced the most dramatic reduction in completed flights, and in the univoltineZ race, this added component was significantly more effective in reducing completed flights than any other added component. The response to the Z9–14∶OAc is understandable given recently published findings of an electrophysiological study of single sensilla in the European corn borer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01015182
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  • 6
    Electronic Resource
    Electronic Resource
    Redundancy in a chemical signal: Behavioral responses of maleTrichoplusia ni to a 6-Component sex pheromone blend (1984)
    Springer
    Journal of chemical ecology 10 (1984), S. 1635-1658 
    Details
    ISSN: 1573-1561
    Keywords: Trichoplusia ni ; cabbage looper moth ; Lepidoptera ; Noctuidae ; pheromone ; redundancy ; flight tunnel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The flight response of maleTrichoplusia ni was observed in a flight tunnel to a sex pheromone blend composed of six components:Z7–12∶Ac, 12∶Ac,Z5-12∶Ac, 11-12∶Ac,Z7-14∶Ac, and Z9-14∶Ac. The number of males reaching a 3000-μg source of this blend was 〉 95%, equal to that observed to female glands and significantly greater than with the previously identified two-component blend (Z7-12∶Ac + 12∶Ac). In subtraction tests, all five-component blends, with the exception of the blend lacking the primary componentZ7-12∶Ac, and several four-component blends elicited similar peak levels of upwind flight, source contacts, and hairpencil displays to that observed with the six-component blend. We characterize the substitution of certain minor components for one another as a form of redundancy in the chemical signal and suggest that it contributes to response specificity and signal recognition in males. The results also support the concept that the full blend of components acts as a unit to influence male behavior at all phases of the response. Individual minor components were not responsible for eliciting specific behaviors in the sequence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988431
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  • 7
    Electronic Resource
    Electronic Resource
    Response specificity of male pink bollworm moths to different blends and dosages of sex pheromone (1985)
    Springer
    Journal of chemical ecology 11 (1985), S. 1583-1590 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; pink bollworm ; Pectinophora gossypiella ; Lepidoptera ; Gelechiidae ; behavioral thresholds ; sustained flight tunnel ; odor discrimination ; Oriental fruit moth ; Grapholita molesta ; Tortricidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Male pink bollworm,Pectinophora gossypiella, were tested in a sustained flight tunnel to 119 blend-dosage combinations of the sex pheromone components, (Z,Z)- and (Z,E)-7,11-hexadecadienyl acetates, which are released by conspecific females in a 61∶39 ratio. Hierarchical cluster analysis was used to define an area of peak attraction. Within this area males were most sensitive at lower dosages to ratios around the natural blend of components, but exhibited peak response levels at higher dosages to a wide range of blends, with a shift in blend preference to higherZ,Z isomer ratios at the highest dosage tested (10 mg). Male response specificity appeared to be influenced exclusively by a threshold for initiation of upwind flight, and not arrestment of upwind flight. The results are compared with those of another species, the Oriental fruit moth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012203
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  • 8
    Electronic Resource
    Electronic Resource
    Sex pheromone blend discrimination by male moths fromE andZ strains of European corn borer (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 143-151 
    Details
    ISSN: 1573-1561
    Keywords: European corn borer ; Ostrinia nubilalis ; Lepidoptera ; Pyralidae ; (Z)-11-tet-radecenyl acetate ; (E)-11-tetradecenyl acetate ; pheromone ; flight tunnel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Sex pheromone behavioral responses were analyzed in a flight tunnel with European corn borer,Ostrinia nubilalis (Hübner), males from three distinct populations. Males from a bivoltine and a univoltine biotype using a 97.8∶2.2 blend (Z strains) of (Z)- and (E)-11-tetradecenyl acetate were assayed with treatments containing 0, 0.5, 1, and 3% of theE isomer. Males from neither population oriented in the plume to the 100%Z treatment, but bivoltine males oriented and flew to the source to the other three treatments, whereas univoltine males oriented and flew to the source only to the 1 % and 3 %E treatments. Males from a bivoltine biotype using a 1∶99 blend ofZ/E isomers (E strain) were assayed with sources containing 0, 0.5, 1, and 3% of theZ isomer. Males did not orient to the 0%Z source, but oriented and flew to the source to the other three treatments. In addition to using opposite geometric isomers for the main pheromone component, the bivoltineE strain differed from the bivoltineZ strain by producing and responding better to 1 % of the minor component and by storing 3 times more pheromone in the female glands. Contrary to previous reports, the blend of two pheromone components is significantly better than the main component alone in eliciting oriented flight and close-range behavior with males from all three populations of European corn borer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020358
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  • 9
    Electronic Resource
    Electronic Resource
    Sublethal effects of neuroactive compounds on pheromone response thresholds in male oriental fruit moths (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    Archives of Insect Biochemistry and Physiology 1 (1984), S. 331-344 
    Details
    ISSN: 0739-4462
    Keywords: sex pheromone ; Oriental fruit moth ; sublethal effects ; permethrin ; carbaryl ; chlordimeform ; dieldrin ; octopamine ; serotonin ; yohimbine ; cyproheptadine ; Chemistry ; Food Science, Agricultural, Medicinal and Pharmaceutical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The pheromone-mediated flight behavior of male Oriental fruit moths in a sustained-flight tunnel was observed after males were treated topically with sublethal concentrations of permethrin, carbaryl, chlordimeform, dieldrin, octopamine, serotonin, yohimbine, and cyproheptadine. With the exception of serotonin all compounds were found to disrupt one or more specific elements of the male precopulatory flight sequence. Among the insecticides, dieldrin was least active, whereas permethrin, carbaryl, and chlordimeform induced unique effects at specific phases of the sequence. Octopamine induced a hypersensitivity to the olfactory signal and mimicked one of the effects observed with chlordimeform. Yohimbine and cyproheptadine significantly decreased moth activation to the chemical signal but did not alter flight performance in responding moths. Yohimbine and cyproheptadine also reversed the effects induced by octopamine. The results of our study show that the complex precopulatory sequence of behaviors exhibited by males is very sensitive to sublethal concentrations of a range of neuroactive compounds.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/arch.940010405
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