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:: Volume 19, Issue 4 (Bimonthly 2015) ::
Feyz 2015, 19(4): 309-318 Back to browse issues page
Contact toxicity of essential oils of Allium sativum L. and Citrus nobilis var. deliciosa (Ten.) Swingle against adults of Blattella germanica (L.) (Dictyoptera: Blattellidae)
Fatemeh Wazifeshenas, Gholam Hosein Moravvej *, Hosein Sadeghi, Saeed Hatefi
Ferdowsi University of Mashhad , moravej@um.ac.ir
Abstract:   (2403 Views)

Background: The German cockroach, Blattella germanica (L.), is an important health and economic pest. Due to the development of resistance to insecticides and medical and economic importance of German cockroaches in urban areas, researches have been focused on using environmental-friendly biopesticides. This study aimed to evaluate the contact toxicity of essential oils of Allium sativum L. and Citrus nobilis var. deliciosa (Ten.) Swingle against adults of B. germanica.

Materials and Methods: The plant essential oils were obtained using a modified Clevenger-type apparatus through hydro-distillation. Bioassays were conducted using essential oil impregnated filter papers, which were placed at the bottom of plastic containers. The A. sativum oil was applied in the concentration ranges of 0.19-0.36 and 0.09-0.17 ml/m2, and the C. nobilis oil was applied in the ranges of 5.82-7.23 and 3.15-5.50 ml/m2 on females and males, respectively.

Results: The results of probit analyses of mortality data after 24 hours indicated that mortality of cockroaches was increased with increasing oil concentration. The toxicity of A. sativum oil (with the LC50 values of 0.12 and 0.26 ml/m2 on males and females, respectively) was significantly higher than C. nobilis oil. Moreover, males were more susceptible than females to A. sativum and C. nobilis oils (2.24 and 1.58 times, respectively).

Conclusion: To have a healthy and safety environment, the use of environmental-friendly biopesticides including essential oils is suggested for integrated management of German cockroaches’ populations in urban areas.

Keywords: Essential oils, Contact toxicity, Blattella germanica, Allium sativum, Citrus nobilis
Full-Text [PDF 310 kb]   (892 Downloads)    
Type of Study: Research | Subject: medicine, paraclinic
Received: 2015/10/12 | Accepted: 2015/10/12 | Published: 2015/10/12
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Wazifeshenas F, Moravvej G H, Sadeghi H, Hatefi S. Contact toxicity of essential oils of Allium sativum L. and Citrus nobilis var. deliciosa (Ten.) Swingle against adults of Blattella germanica (L.) (Dictyoptera: Blattellidae). Feyz. 2015; 19 (4) :309-318
URL: http://feyz.kaums.ac.ir/article-1-2791-en.html


Volume 19, Issue 4 (Bimonthly 2015) Back to browse issues page
مجله علمی پژوهشی فیض ::: دانشگاه علوم پزشکی کاشان KAUMS Journal ( FEYZ )
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