Khan-Ahmadi A, Vatandoost H, Akhavan AA, Baniardalani M, Khalifeh-Soltani K, Azarm A, Zahraei-Ramazani A. Evaluation of Repellency and Lethal Effects of Ultrasonic Waves on the
Blattella germanica (Blattodea: Blattellidae).
J Arthropod Borne Dis 2023;
17:83-93. [PMID:
37609562 PMCID:
PMC10440496 DOI:
10.18502/jad.v17i1.13204]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 02/21/2023] [Indexed: 08/24/2023] Open
Abstract
Background
The German cockroach, Blattella germanica (Insecta: Blattodea, Blattellidae), which occurs widely in human buildings, is a small cockroach species. Cockroach control chemical pesticides are toxic to the environment, and it is sometimes impossible to prevent them. Controlling Blattella germanica through ultrasonic waves can be efficient and less dangerous for the environment.
Methods
In this study, the repellency and lethal effect of ultrasonic waves on male and female German cockroaches was tested in a twin glass cubic chamber at laboratory condition. The wave frequencies tested ranged from 20 to 100kHz with 5kHz steps. A signal generator generated these frequencies, and the piezoelectric transmitter of these ultrasonic waves was positioned in the chamber's center on the upper side.
Results
Fisher's test showed that there was the greatest repellency effect in both male and female at frequencies of 35 and 40kHz. According to the results of the regression test, the most lethal effect is at the frequencies of 40 and 75kHz.
Conclusion
The operating ultrasonic frequencies investigated in this study can be used to repel and kill German cockroaches as pests endangering human health and environment.
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