Chinese Journal of Entomology (1995) 15, 355-361

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Hsiu-Ting Yang, Err-Lieh Hsu, Wu-Kang Peng and Yien-Shing Chow (1995)
[The secondary killing effect of hydramethylnon bait trays on cockroaches and a control experiment in houses]
Chinese Journal of Entomology 15 (4), 355-361
Abstract: Bait with 65 % hydramethylnon was tested for the control of cockroaches. The roaches were attracted to the bait and fed on it. The poisoned roaches died within several days and furthermore, the cockroaches in the colony which did not feed directly on the bait were also killed. Results obtained in this study indicate that cockroaches feeding on toxic bait can transfer lethal toxic substances to other roaches in the colony. Six 1.65% hydramethylnon bait trays (56 cm2) were tested in houses (66m2) at Nankang, Taipei, for three months from September to December 1993. The reduction rates of cockroaches in these houses were 68-70%. Subsequent tests were carried out again from April to June and from July to October 1994. The effects of six bait trays were the same with the control groups, yet 37-65% reduction rates were found using the twelve trays in a house in the period April to June, and 27-52 % reduction rates from July to October. These results reveal that six hydramethylnon baits were sufficient in reducing the roach population in a house of 66m2 during autumn and winter. However, more than 12 baits were required to control roaches during spring and summer. The cumulative capture percentages of Periplaneta americana, P. australasiae, P. brunnea, Blattella germanica and Pycnoscelus surinamensis were 58.1%, 32.4%, 8.7%, 0.5% and 0.2%, respectively. The kitchen was the area where most roaches were caught.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Err-Lieh Hsu

Research topic(s) for pests/diseases/weeds:
control - general


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Blattella germanica Taiwan
Periplaneta americana Taiwan
Periplaneta australasiae Taiwan
Pycnoscelus surinamensis Taiwan
Periplaneta brunnea Taiwan