The Potential Role of Photosensitizers in Fight against Mosquitoes: Phototoxicity of Rose Bengal against Culex Pipiens Larvae
Younis, M., Khater, H., Hussein, A., farag, S., Aboelela, H., Rashed, G. (2021). The Potential Role of Photosensitizers in Fight against Mosquitoes: Phototoxicity of Rose Bengal against Culex Pipiens Larvae. EKB Journal Management System, 38(Academic issue), 1-10. doi: 10.21608/bmfj.2020.119556
Mohamed Younis; Hanem hater Khater; Atef Hussein; Shaimaa farag; Heba Aboelela; Gehan Rashed. "The Potential Role of Photosensitizers in Fight against Mosquitoes: Phototoxicity of Rose Bengal against Culex Pipiens Larvae". EKB Journal Management System, 38, Academic issue, 2021, 1-10. doi: 10.21608/bmfj.2020.119556
Younis, M., Khater, H., Hussein, A., farag, S., Aboelela, H., Rashed, G. (2021). 'The Potential Role of Photosensitizers in Fight against Mosquitoes: Phototoxicity of Rose Bengal against Culex Pipiens Larvae', EKB Journal Management System, 38(Academic issue), pp. 1-10. doi: 10.21608/bmfj.2020.119556
Younis, M., Khater, H., Hussein, A., farag, S., Aboelela, H., Rashed, G. The Potential Role of Photosensitizers in Fight against Mosquitoes: Phototoxicity of Rose Bengal against Culex Pipiens Larvae. EKB Journal Management System, 2021; 38(Academic issue): 1-10. doi: 10.21608/bmfj.2020.119556

The Potential Role of Photosensitizers in Fight against Mosquitoes: Phototoxicity of Rose Bengal against Culex Pipiens Larvae

Benha Medical Journal
Article 1, Volume 38, Academic issue, February 2021, Page 1-10  XML PDF (649.86 K)
Document Type: Original Article
DOI: 10.21608/bmfj.2020.119556
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Authors
Mohamed Younis1; Hanem hater Khater2; Atef Hussein3; Shaimaa farag4; Heba Aboelela1; Gehan Rashed1
1Department of Parasitology, Faculty of Medicine, Benha University, Egypt
2b Department of Parasitology, Faculty of Veterinary Medicine, Benha University, Egypt
3Department of Parasitology, Faculty of Medicine, Benha University, Egypt.
4Department of Entomolgy, Faculty of Science, Ain Shams University, Egypt.
Abstract
Background: Thecommon house mosquito, Culex pipiens, is abundant in Egypt and act as a vector of pathogens of medical and veterinary importance. Aim: The present study aimed to compare the toxic effect of rose bengal a photosensitizer to that of chlorpyrifos, a commercially available larvicide against the early 3rd larval instar of Cx. pipiens. Methods:  We compare the toxic effect of rose Bengal exposed to sunlight from 10 am to 4 pm to that of chlorpyrifos, against the early 3rd larval instar of Cx. pipiens. Results: Treatments revealed dose-dependent mortality, reaching 100% after treatment with rose bengal for 6 hrs and 90.6% for chlorpyrifos for 24 hrs. Six hours post-treatments, the LC50 of rose bengal and chlorpyrifos were 4.9x10-6 and 4.9x10-4, respectively; while the LC95 were 2.0x10-3 and 4.0x0-3, respectively. Based on the LC50 values of chlorpyrifos as a reference substance, rose bengal was found 100 times more potent than chlorpyrifos. The LT50 of rose bengal ranged from 34.8 to 1.1 hrs post-treatment with1×10-6 M and 1×10-2, respectively. The LT50 values of chlorpyrifos ranged from 3065.9 to 6.1 hrs after subjecting to 1×10-4 M and 1×10-3, respectively. Conclusion: It could be concluded that rose bengal could be used to prevent mosquito bites and their associated diseases as an alternative to traditional insecticides and an eco-friendly larvicide.
Keywords
photodynamic treatment; sunlight; larvicides; Mosquitoes; Egypt
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