Evaluating Oviposition Deterrent, Larvicidal and Repellent Effects of Different Plant Extracts and Their Combinations against Aedes aegypti

Abstract

Mosquitoes are significantly important in public health as they transmit many vector-borne diseases like dengue fever (DF), malaria, and filariasis to millions of people worldwide. Although there is no effective vaccination for the prevention of dengue, avoiding mosquito bites is one method to control mosquito populations. Due to the extensive uses of synthetic repellent,’ mosquitoes established resistance against them. The plant-based extracts are used as an alternative to targeted insecticides. Therefore, current study aimed to examine the oviposition-deterrent, larvicidal and repellent efficacy of plant-based extracts Clove (Syzygium aromaticum), Cinnamon (Cinnamomum verum), Lemon (Citrus limon), Orange (Citrus sinensis), Onion (Allium cepa), Garlic (Allium sativum), Lemon grass (Cymbopogon citratus), and Aloe vera (Aloe barbadensis Miller) against Aedes aegypti under laboratory conditions. The maximum repellency was observed by clove, and lemon peel plant extract compared to all other botanical plants. However, lemon, clove, garlic, onion, and garlic with lemongrass are promising for oviposition control. While, clove, lemon peel, orange and lemon peels, and lemongrass combination for larvicidal control. In terms of repellents, the most suspected repellent plants showed by the combinations of (Olive oil, lemon peel, citrus peel, lemongrass, Aloe vera), (Olive oil, lemon peel, citrus peel, lemongrass), (Olive oil, lemon peels, citrus peels, Aloe vera), such as 19.85, 19.85,19.84 repellency value along with 100% protection time up to 1 h. The establishment of plant-based products against Aedes aegypti, complemented with insecticidal activity, could lead to an innovative approach to managing mosquito populations and disease vectors.