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    Attractants for the New Zealand grass grub, Costelytra zealandica (White)

    Boyd, J. F.
    Abstract
    It has been demonstrated (Osborne and Hoyt, 1970) that male grass grub beetles are strongly attracted to the phenol/formaldehyde resin Durez 12687. In preliminary work it was shown that attractant activity was associated with the presence of residues of phenol in the resin although this latter material appeared to be far more active than phenol. The situation has now been investigated more fully. Phenol release rates from samples of resin have been measured and field trials have been carried out in which the attractancy of formulations with similar release rates have been compared. Evidence has been presented that an odour synergist is present in the resin. The second part of this thesis has involved a study of larval attractants for the grass grub. Preliminary work (Osborne and Hoyt, 1969b) suggested that third-instar larvae C. zealandica may be attracted chemically to certain natural products including roots of carrot and parsnip. This attraction has been studied further using a choice chamber assay technique. Chemical analysis has revealed that certain of the active attractants possess terpene constituents in common and one of these (β-pinene) is active as an attractant. Routine screening of related compounds led to the discovery that ά-fenchol is a potent larval attractant for C. zealandica under laboratory conditions.... [Show full abstract]
    Keywords
    Costelytra zealandica (White); grass grub; grass grub beetles; pasture pests; phenols; attractant activity; chemical attractants; pest control; insect attractant chemicals; pheromones; biological control; sex attractants
    Fields of Research
    070308 Crop and Pasture Protection (Pests, Diseases and Weeds); 060201 Behavioural Ecology; 060806 Animal Physiological Ecology; 060601 Animal Physiology - Biophysics
    Date
    1975
    Type
    Thesis
    Access Rights
    Digital thesis can be viewed by current staff and students of Lincoln University only. Print copy available for reading in Lincoln University Library.
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    • Department of Pest Management and Conservation [638]
    • Theses and Dissertations with Restricted Access [2181]
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