Orientation of males of sorghum midge, Contarinia sorghicola to sex pheromones from virgin females in the field

    Sharma, H C and Vidyasagar, P (1991) Orientation of males of sorghum midge, Contarinia sorghicola to sex pheromones from virgin females in the field. Entomologia Experimentalis et Applicata, 64 (1). pp. 23-29. ISSN 1570-7458

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    Abstract

    The orientation of males of the sorghum midge, Contarinia sorghicola Coq. (Diptera: Cecidomyiidae) towards virgin female baited sticky traps was studied in the field. Male response increased linearly with an increase in the number of virgin females in the sticky traps. Five females per vial were optimum for monitoring midge populations in the field. Numbers of males trapped were significantly greater in traps placed at 0.5 and 1.5 m above ground level compared with those placed at 2.5 m. Peak trap catches occurred at 0900 h. The number of males trapped decreased significantly after 1400 h; male catches continued till sunset. Trap catches followed the same pattern as the number of ovipositing females on sorghum panicles at the half-anthesis stage. Midge activity decreased with an increase in temperature and a decrease in relative humidity. Peak midge density was observed during the second fortnight of October in the rainy season and during February-March in the post-rainy season. Sex pheromones can be used to monitor midge population dynamics for integrated pest management and to screen for host plant resistance to this insect

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Contarinia sorghicola; sorghum midge; sex pheromones; orientation
    Subjects: Mandate crops > Sorghum
    Depositing User: Ms K Syamalamba
    Date Deposited: 26 Sep 2013 08:16
    Last Modified: 26 Sep 2013 08:16
    URI: http://oar.icrisat.org/id/eprint/7130
    Official URL: http://dx.doi.org/10.1111/j.1570-7458.1992.tb01590...
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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