Effect of Ultra Violet Radiation and Frozen Eggs Of Corcyra cephalonica Stainton (Lepidoptera: Pyralidae) on Parasitisim by Trichogramma (Hymenoptera: Trichogrammatidae)

Herlinda, Siti (2008) Effect of Ultra Violet Radiation and Frozen Eggs Of Corcyra cephalonica Stainton (Lepidoptera: Pyralidae) on Parasitisim by Trichogramma (Hymenoptera: Trichogrammatidae). In: Seminar Nasional Perhimpunan Entomologi Indonesia Cabang Palembang, 18 Oktober 2008, Palembang.

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    Abstract

    Two laboratory experiments were conducted to evaluate the effect of ultra violet (UV) sterilized eggs of factitious host, Corcyra cephalonica (Stainton), and to observe the effect of frozen eggs of the host on parasitism by Trichogramma. The first experiments used three levels of UV radiation intensities: 10, 15, and 20 watt combined with three levels of duration of UV radiation (30, 60, and 90 minutes of radiation). The second experiments used frozen eggs stored in freezer (– 4 oC) for 1, 2, and 3 hours. Result showed that the UV radiation intensities did not affected the host hatched, parasitism, and Trichogramma emergence, but the duration of ultraviolet radiation significantly affected the host hatched. The lowest host hatched occurred on 90-minute radiation, but not significantly different from 60-minute radiation. The Trichogramma reared on 2 and 3-hour frozen eggs produced more parasitized eggs compared the one reared on 1-hour frozen eggs. Sex ratio was predominantly female, the most female progenies were produced by Trichogramma reared on 2-hour frozen eggs. Longevity of Trichogramma reared on 1-hour frozen eggs was significantly lower than those reared on 2 and 3-hour frozen eggs. Sixty-minute UV radiation on the host eggs, and 2-hour frozen eggs was better for the egg parasitoid mass rearing.

    Item Type: Conference or Workshop Item (Paper)
    Uncontrolled Keywords: Ultra Violet, Frozen egg, Trichogramma, Corcyra cephalonica (Stainton)
    Subjects: S Agriculture > S Agriculture (General)
    S Agriculture > SB Plant culture
    Divisions: Faculty of Agriculture > Department of Plant Pests and Diseases
    Depositing User: Candra Setiawan
    Date Deposited: 22 Jan 2012 15:25
    Last Modified: 04 Mar 2012 14:18
    URI: http://eprints.unsri.ac.id/id/eprint/256

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