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    Author(s): J.E. Mulrooney; P.D. Gerard
    Date: 2009
    Source: Sociobiology, Vol. 53(3): 695-706
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (180.28 KB)

    Description

    Tunneling and activity bioassays of chlorfenapyr, fipronil, and imidacloprid

    treated sand were conducted in the laboratory using Reticulitermes flavipes

    (Kollar). Termites tunneled significantly less through sand treated with 1.0

    ppm concentrations of fipronil and imidacloprid compared to the control

    and chlorfenapyr. Mortality after 7 d was 57, 25, and 29% for fipronil, chlorfenapyr,

    and imidacloprid, respectively. In a second experiment, termite

    activity was determined from sound events detected in an acoustical event

    detection system over a 48 h period after termites were placed on sand treated

    with 1.0 or 10.0 ppm concentrations. Activity of termites declined to near

    zero within 3 and 9 h when exposed to 1.0 ppm imidacloprid- and fiproniltreated

    sand, respectively. Termites in the 1.0 ppm chlorfenapyr treatment

    showed a decline in activity to near zero after 7 h, followed by an increase in

    activity and another decline at 12 and 13 h only to increase once again and

    remain significantly above zero for the remainder of the 48 h period. Mean

    termite mortality 7 d after termites were placed on treated sand was 100, 99,

    and 76% for fipronil, chlorfenapyr, and imidacloprid, respectively. Termite

    activity declined to near zero 2, 8, and 9 h after exposure to 10.0 ppm imidacloprid-,

    chlorfenapyr-, and fipronil-treated sand, respectively. Mortality

    associated with the 10.0 ppm concentration, recorded after 4 d, was 100% for

    fipronil and 92% for chlorfenapyr. Mortality due to imidacloprid exposure

    was 100% after 7 d.

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    Citation

    Mulrooney, J.E.; Gerard, P.D. 2009. Tunneling and activity of reticulitermes flavipes (isoptera: rhinotermitidae) exposed to low concentrations of nonrepellent termiticides. Sociobiology, Vol. 53(3): 695-706

    Keywords

    nonrepellent termiticide, toxicity, termite activity

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