Abstract
The control of mosquitoes is an important public health concern around the world. The activity of petroleum ether extracts of Dodonaea viscose, Lantana camara and Ruta chaliphenses have been investigated towards larval development of Aedes aegypti. The plant extracts exhibits variable biological activity against Ae. aegypti. The greatest effect was observed with Dodonaea viscose and Lantana camara. They showed acute LC50 (2days) of 126.2, 136.9 and chronic LC50 (10 days) of 64.6 and 68.5 ppm, respectively. Larvae suffered chronic toxicities leading to 97.8% mortality using Dodonaea viscose and 95.6% using Lantana camara. Egg hatchability was significantly reduced in Dodonaea viscose and Lantana camara concentrations. All extracts concentrations of Dodonaea viscose and Lantana camara as well as higher extract concentration of Ruta chaliphenses caused significant high hindrance of subsequent larval development and consequently reduced both pupation and adult mergence. Drastic retardation of development was shown using Dodonaea viscose extracts (17.3, 7.4%) and Lantana camara extracts (19.3, 9.0%) from larval stage managed to pupal and adult stages, when reared in very low concentration (100 ppm) of the extracts. Ruta chaliphense was only more effective at higher concentrations. Hence, application of these extracts to Ae. aegypti mosquito breeding sites can be used as an innovative valuable alternative to the existing synthetic pesticides for the control of Ae. aegypti.
Highlights
Insect transmitted diseases remain a major source of illness and death worldwide
The activity of petroleum ether extracts of Dodonaea viscose, Lantana camara and Ruta chaliphenses have been investigated towards larval development of Aedes aegypti
The greatest effect was observed with Dodonaea viscose and Lantana camara
Summary
Mosquitoes are still the world’s number one vectors of human and animal diseases. These diseases including malaria, filariasis, yellow and dengue fever and Japanese encephalitis, contribute significantly to poverty and social debility in tropical countries (Jang, Kim, Ahn, & Lee, 2002; Rajkumar & Jebanesan, 2005). There is no effective vaccine against dengue, and the only way of significantly lowering the incidence of this disease is through mosquito control (Malavige, Fernando, Fernando, & Seneviratne, 2004). The extensive use of chemical pesticides or insecticides resulted in inducing resistance by insect pests besides, residue contamination of human food, mammalian toxicity and environmental pollution (Domingues, Agra, Monaghan, Soares, & Nogueira, 2010). Several studies have emphasized the importance of research and development of herbal substances for controlling mosquitoes (Shaalan, Canyon, Younes, Abdel-Wahab, 2012). Sukumar, Perich, and Boobar (1991) listed and www.ccsenet.org/jas
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
