Structural characterization and evaluation of mosquito-larvicidal property of silver nanoparticles synthesized from the seaweed, Turbinaria ornata (Turner) J. Agardh 1848

Abstract

The silver nanoparticles synthesized from Turbinaria ornata (To-AgNPs) showed spherical with crystalline nature (20–32 nm) was evaluated against fourth instar larvae of three mosquitoes. The maximum activity of To-AgNPs was recorded on Aedes aegypti followed by Anopheles stephensi and Culex quinquefasciatus with the following lethal concentration values (μg/ml): LC₅₀ of 0.738, 1.134, and 1.494; and LC₉₀ of 3.342, 17.982, and 22.475, respectively. The obtained respective values (μg/ml) vis-a-vis aqueous extract (To-AE) were: 2.767 and 40.577; 4.347 and 158.399, and 7.351 and 278.994. The findings revealed that To-AgNPs could form a base for the development of an eco-friendly, low-cost pesticide.

Keywords:

• Aedes aegypti
• larvicidal activity
• silver nanoparticles
• Turbinaria ornata

Acknowledgements

The authors are grateful to the authorities of Periyar University for providing the necessary facilities to carry out this work.

Disclosure statement

No potential conflict of interest was reported by the authors.