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Filtering by: Graduation year 1961 Remove constraint Graduation year: 1961 Creator Brown, Robert David Remove constraint Creator: Brown, Robert David Degree Field Entomology Remove constraint Degree Field: Entomology

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  • Photoperiodic control of development in the leafhopper, Agalliopsis abietaria Oman

    Creator:
    Brown, Robert David
    Abstract:
    Photoperiod controls the duration of both the fourth and fifth stadia in Agalliopsis abietaria Oman. Development was arrested in the fourth stadium unless short days were given during the second and third instars; a short arrest of development occurred if the short days did not begin until the fourth instar....
    Resource Type:
    Masters Thesis
    Full Text:
    under short-day than long-day conditions (Danilevskii, 1961:204). Similarly, Kamm (1971) found that the

  • Gamma irradiation of the western cherry fruit fly for the sterile male control technique

    Creator:
    Brown, Robert David
    Abstract:
    The western cherry fruit fly, Rhagoletis indifferens Curran, was studied to determine the suitability of the sterile insect technique for its control. To obtain insect material, field collection of maggots is preferred to sifting of soil or rearing on artificial diet. The western cherry fruit fly is strictly univoltine; only...
    Resource Type:
    Dissertation
    Full Text:
    reports of R. indifferens infesting species of plums: Ellertson (1961) found an infestation in P