Comparative efficacy of insecticide products for control of German cockroaches (Blattella germanica)

Authors

  • Sunaiyana Sathantriphop National Institute of Health, Department of Medical Sciences
  • Pornanong Tassanai National Institute of Health, Department of Medical Sciences
  • Phubeth Ya-umphan National Institute of Health, Department of Medical Sciences
  • Pungasem Paeporn National Institute of Health, Department of Medical Sciences
  • Pongsakorn Mukkhun National Institute of Health, Department of Medical Sciences

DOI:

https://doi.org/10.14456/dcj.2019.36

Keywords:

Blattella germanica, contact toxicity test, cypermethrin, chorpyrifos, fipronil, chlorfenapyr

Abstract

Bioefficacy of four selected insecticidal products used for cockroach control was conducted against adult females of the German cockroaches (Blattella germanica) to determine contact toxicity rates. Test substances were cypermethrin 25% w/v EC, chlorpyrifos 40% w/v EC, fipronil 5% w/v SC, and chlorfenapyr 24% w/v SC tested at dosages of 0.1, 0.25, 0.1 and 0.25 g a.i./m2, respectively. Treatment rates were determined according to World Health Organization (WHO) testing recommendations or product label instructions. These products were tested separately against B. germanica using surface contact exposure method. Test cockroaches were exposed to insecticide treated 20 cm2 glass sheet with 4 separate exposure events at 5, 10, 30, and 60 minutes. Both cypermethrin and fipronil were highly effective against B. germanica, providing quick knockdown and killing actions after a 5-minute exposure to the insecticide treated panels with 4.27 and 3.87 minute KT50 values respectively, resulting in 100% mortality. Chlorfenapyr required a 10-minute exposure to achieve 100% mortality with KT50 value of 9.46 minutes, whereas chlorpyrifos required 30 minutes to achieve 100% mortality but the KT50 could not be calculated. Toxicity comparison of the four insecticidal products tested against B. germanica decreased in the order of fipronil ~ cypermethrin > chlorphenapyr > chlorpyrifos.

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Published

2019-12-24

How to Cite

1.
Sathantriphop S, Tassanai P, Ya-umphan P, Paeporn P, Mukkhun P. Comparative efficacy of insecticide products for control of German cockroaches (Blattella germanica). Dis Control J [Internet]. 2019 Dec. 24 [cited 2024 Apr. 20];45(4):392-401. Available from: https://he01.tci-thaijo.org/index.php/DCJ/article/view/166511

Issue

Vol. 45 No. 4 (2019): October-December

Section

Original Article

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Articles published in the Disease Control Journal are considered as academic work, research or analysis of the personal opinion of the authors, not the opinion of the Thailand Department of Disease Control or editorial team. The authors must be responsible for their articles.