Toxicity and Field Efficiency of Certain Insecticides Against the Subterranean Termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae)
The subterranean termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae)is considered one of the most dangerous termites in urban, rural and agricultural areas in the desert belt of Assiut governorate, Egypt. Organophosphate insecticides such as chlorpyrifos have been recommended to cont...
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| Format: | Article |
| Language: | English |
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Egyptian Society of Biological Sciences
2020-12-01
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| Series: | Egyptian Academic Journal of Biological Sciences. F, Toxicology and Pest Control |
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| Online Access: | https://eajbsf.journals.ekb.eg/article_133369_ddcde7a3f17952e7dd42011ed51f5555.pdf |
| _version_ | 1818658431586795520 |
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| author | Aly Ahmed Abd-Ella |
| author_facet | Aly Ahmed Abd-Ella |
| author_sort | Aly Ahmed Abd-Ella |
| collection | DOAJ |
| description | The subterranean termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae)is considered one of the most dangerous termites in urban, rural and agricultural areas in the desert belt of Assiut governorate, Egypt. Organophosphate insecticides such as chlorpyrifos have been recommended to control subterranean termites in Egypt. The present research was conducted to evaluate the toxicity, persistency and effectiveness of chlorpyrifos (chlorzan 48% EC), imidacloprid (imidammex 70% WG), chlorantraniliprole (coragen 20% SC), indoxacarb (avaunt 15% EC) and spinosad (tracer 24% SC) against subterranean termites. The toxicity of these insecticides was tested against field strain of the subterranean termites using the cardboard dip-bioassay technique under laboratory conditions. The toxicity index after 12 and 24 hr exposure showed that chlorpyrifos has the highest termiticidal activity, with LC50s 1.19 and 0.13 ppm, followed by imidacloprid with LC50s 3.24 and 0.61 ppm, while spinosad was the least toxic one with LC50s.9.96 and 4.95 ppm. Furthermore, chlorpyrifos, imidacloprid and chlorantraniliprole registered significantly high percent reduction of the infested rural homes by subterranean termite, P. hypostoma, while indoxacarb and spinosad recorded the lowest reduction percentage after 30, 60, 90 and 120 days of treatment. In addition, the efficiency and residual effects of chlorpyrifos persisted up to 120 days followed by imidacloprid and chlorantraniliprole after treatment. Results of this study indicated that, chlorpyrifos exhibited the most powerful pesticide among all the insecticides tested, and imidacloprid and chlorantraniliprole were highly effective and it is given as unique and hopeful trends against subterranean termites under field conditions. |
| first_indexed | 2024-12-17T03:57:16Z |
| format | Article |
| id | doaj.art-e895305c20ee4815b52a6bee0e3b5fbd |
| institution | Directory Open Access Journal |
| issn | 2090-0864 2090-0791 |
| language | English |
| last_indexed | 2024-12-17T03:57:16Z |
| publishDate | 2020-12-01 |
| publisher | Egyptian Society of Biological Sciences |
| record_format | Article |
| series | Egyptian Academic Journal of Biological Sciences. F, Toxicology and Pest Control |
| spelling | doaj.art-e895305c20ee4815b52a6bee0e3b5fbd2022-12-21T22:04:36ZengEgyptian Society of Biological SciencesEgyptian Academic Journal of Biological Sciences. F, Toxicology and Pest Control2090-08642090-07912020-12-01122257267DOI:10.21608/EAJBSF.2020.133369Toxicity and Field Efficiency of Certain Insecticides Against the Subterranean Termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae)Aly Ahmed Abd-Ella0Plant Protection Department, Faculty of Agriculture, Assiut University, Assiut, EgyptThe subterranean termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae)is considered one of the most dangerous termites in urban, rural and agricultural areas in the desert belt of Assiut governorate, Egypt. Organophosphate insecticides such as chlorpyrifos have been recommended to control subterranean termites in Egypt. The present research was conducted to evaluate the toxicity, persistency and effectiveness of chlorpyrifos (chlorzan 48% EC), imidacloprid (imidammex 70% WG), chlorantraniliprole (coragen 20% SC), indoxacarb (avaunt 15% EC) and spinosad (tracer 24% SC) against subterranean termites. The toxicity of these insecticides was tested against field strain of the subterranean termites using the cardboard dip-bioassay technique under laboratory conditions. The toxicity index after 12 and 24 hr exposure showed that chlorpyrifos has the highest termiticidal activity, with LC50s 1.19 and 0.13 ppm, followed by imidacloprid with LC50s 3.24 and 0.61 ppm, while spinosad was the least toxic one with LC50s.9.96 and 4.95 ppm. Furthermore, chlorpyrifos, imidacloprid and chlorantraniliprole registered significantly high percent reduction of the infested rural homes by subterranean termite, P. hypostoma, while indoxacarb and spinosad recorded the lowest reduction percentage after 30, 60, 90 and 120 days of treatment. In addition, the efficiency and residual effects of chlorpyrifos persisted up to 120 days followed by imidacloprid and chlorantraniliprole after treatment. Results of this study indicated that, chlorpyrifos exhibited the most powerful pesticide among all the insecticides tested, and imidacloprid and chlorantraniliprole were highly effective and it is given as unique and hopeful trends against subterranean termites under field conditions.https://eajbsf.journals.ekb.eg/article_133369_ddcde7a3f17952e7dd42011ed51f5555.pdfsubterranean termite; insecticides; toxicity; field evaluation; stability |
| spellingShingle | Aly Ahmed Abd-Ella Toxicity and Field Efficiency of Certain Insecticides Against the Subterranean Termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae) Egyptian Academic Journal of Biological Sciences. F, Toxicology and Pest Control subterranean termite; insecticides; toxicity; field evaluation; stability |
| title | Toxicity and Field Efficiency of Certain Insecticides Against the Subterranean Termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae) |
| title_full | Toxicity and Field Efficiency of Certain Insecticides Against the Subterranean Termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae) |
| title_fullStr | Toxicity and Field Efficiency of Certain Insecticides Against the Subterranean Termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae) |
| title_full_unstemmed | Toxicity and Field Efficiency of Certain Insecticides Against the Subterranean Termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae) |
| title_short | Toxicity and Field Efficiency of Certain Insecticides Against the Subterranean Termite, Psammotermes hypostoma Desneux (Isoptera: Rhinotermitidae) |
| title_sort | toxicity and field efficiency of certain insecticides against the subterranean termite psammotermes hypostoma desneux isoptera rhinotermitidae |
| topic | subterranean termite; insecticides; toxicity; field evaluation; stability |
| url | https://eajbsf.journals.ekb.eg/article_133369_ddcde7a3f17952e7dd42011ed51f5555.pdf |
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