Properties for sourcing Nigerian larvicidal plants

Area of Science:

• Medical Entomology
• Ethnobotany
• Chemical Ecology

Background:

• Aedes aegypti mosquitoes transmit significant human diseases, including dengue, chikungunya, and yellow fevers.
• Insecticide resistance in Aedes aegypti necessitates the development of novel, effective control agents.
• Ethnomedicinal plants are a potential source for new insecticides due to their diverse bioactive compounds.

Purpose of the Study:

• To screen plant extracts for larvicidal activity against Aedes aegypti.
• To identify plant species with potential as natural sources for mosquito control agents.

Main Methods:

• Eighteen plant extracts with known bioactivities were tested.
• Larvicidal assays were performed on fourth instar Aedes aegypti larvae.
• Activity levels were categorized as high, moderate, or low.

Main Results:

• 61% of the tested plant extracts exhibited significant larvicidal activity.
• Extracts from Piper nigrum and Abrus precatorius seeds demonstrated the highest efficacy.
• Further investigation into the active compounds of Abrus precatorius is warranted.

Conclusions:

• Several plant extracts possess potent larvicidal properties against Aedes aegypti.
• Piper nigrum and Abrus precatorius are promising candidates for developing new mosquito control strategies.
• Continued research into plant-derived insecticides can provide sustainable alternatives to synthetic chemicals.