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Variability in pheromone composition and periodicity of pheromone titer in potato tuberworm moth,Phthorimaea operculella (Lepidoptera: Gelechiidae)

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Abstract

The ratios and quantities of the pheromone components, (E,Z)-4,7-tridecadien-1-yl acetate (diene) and (E,Z,Z)-4,7.10-tridecatrien-1-yl acetate (triene), in the glands of individual female potato tuberworm moths (Phthorimaea operculella) originating from the United States (California) and Japan (Nagoya) were analyzed by gas chromatography. Quantities of glandextracted pheromone components of Nagoya females fluctuated in a periodic fashion during the photoperiod. Maximal titers coincided with the onset of scotophase (and calling), then gradually declined to minimal levels soon after lights-on. The average daily pheromone quantities decreased significantly as females aged. Both populations exhibited considerable variation in the ratio of the two components. The proportions of triene in the blend ranged from 27% to 88% (triene −X = 56 ± 13% SD; CV = 23%) for California females and from 16% to 71% (42 ± 13%; CV = 31%) for Nagoya females. Nagoya females also stored significantly higher amounts of pheromone in their glands (8.6 ± 3.9 ng) than did California females (2.7 ± 1.4). The differences between the populations, while substantial, would probably not be sufficient to impart a barrier to panmixis, given the wide range of component ratios favored by the males.

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Author notes

  1. T. Ono

    Present address: Laboratory of Biology, Kinjo Gakuin University, Omori, Moriyama, 463, Nagoya, Japan

  2. R. E. Charlton

    Present address: Department of Entomology, New York State Agricultural Experiment Station, Cornell University, 14456, Geneva, New York

Authors and Affiliations

  1. Department of Entomology, University of Massachusetts, 01003, Amherst, Massachusetts

    T. Ono, R. E. Charlton & R. T. Cardé

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  3. R. T. Cardé
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Ono, T., Charlton, R.E. & Cardé, R.T. Variability in pheromone composition and periodicity of pheromone titer in potato tuberworm moth,Phthorimaea operculella (Lepidoptera: Gelechiidae). J Chem Ecol 16, 531–542 (1990). https://doi.org/10.1007/BF01021784

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  • DOI: https://doi.org/10.1007/BF01021784

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