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    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/75306

    Title: Use of liquid nitrogen to treat solenopsis invicta (Hymenoptera: Formicidae) nests
    Authors: Lin, H.-M.;Tseng, Y.-C.;Chen, Chen C.-T.;Lin, C.-C.;Lee, Y.-T.;Chen, Yang-Yuan
    Contributors: 應物所
    Keywords: ant;climate conditions;low temperature;nesting behavior;nitrogen;pesticide;temperature effect
    Date: 2013-09
    Issue Date: 2015-05-26 18:01:30 (UTC+8)
    Abstract: Liquid nitrogen (LN2) injection was used to against the red imported fire ant (Solenopsis invicta Buren) by taking the advantage of rapid killing, no side effects from residuals, and non-dependence on weather conditions of this method. Red imported fire ants workers were placed in glass bottles and treated by sub-zero temperatures for either two or zero minutes after thermo-equilibrium to determine the lethal low temperature. Fire ant nests were then treated by LN2 and the survival of the ants was monitored. Thus-15 °C was shown to cause 100% of mortality of workers at 24 hours post treatment. Large numbers of ant corpses, which included larvae, pupae and queens, were discovered in the nest after LN2 treatment. In a field experiment, 10 nests were treated by LN2, while 9 were left as controls. The number of active nests significantly decreased to just one nest at the 14th day post LN2 application and none was considered to be functional at the 21st day. These results suggest that LN2 freezing is capable of eliminating individual fire ant nests effectively, and that this treatment is useful for areas of high human activity and for agricultural and other areas that have a low tolerance to conventional pesticides.
    Relation: Florida Entomologist, 96(3), 871-876
    Data Type: article
    DOI 連結: http://dx.doi.org/10.1653/024.096.0322
    DOI: 10.1653/024.096.0322
    Appears in Collections:[應用物理研究所 ] 期刊論文

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