Petroleum ether, acetone, ethyl acetate, aqueous extract, methanol and ethanol fractionate of Eichhornia crassipes (Mart.) Solms was tested for their larvicidal efficacy against the different instars (I, II, III and IV) and pupae of Culex quinquefasciatus Say. The larval mortality was observed after 24 h of the treatment. The extracts showed a dose-dependent toxicity to larvae. The toxicity of the extracts decreased with increase in larval stage. Ethanol fractionate of E. crassipes showed the highest larvicidal and pupicidal activity against C. quinquefasciatus compared to other solvent extracts and fractionates with LC(50) 71.43, 94.68,120.42, 152.15 and 173.35 ppm for I, II, III, IV and pupae, respectively. Presence of metabolites like flavonoids, alkaloids, anthroquinones and anthocyanins in the tested extracts might be the reason for the larvicidal and pupicidal activity of the plant extracts and fractionates of waterhyacinth. Mosquito-repellent activity was not exhibited by these extracts at the tested concentrations. The results demonstrated the potential of the aquatic plant E. crassipes in the successful control of the filarial vector C. quinquefasciatus.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00436-012-3061-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Efficacy of plant extracts against the immature stage of house fly, Musca domestica (Diptera: Muscidae).
Trop Biomed
December 2024
Department of Entomology and Plant Pathology, Khon Kaen University, Thailand Mittapap Road, Khon Kaen, Khon Kaen, 40002, Thailand.
This research aimed to find indigenous plants and suitable solvents to extract substances with the capacity to suppress the immature stages of house fly populations in animal farms and urban areas. Seven native Thai plants were tested: Alstonia scholaris (L.) R.
View Article and Find Full Text PDFRetraction notice to "Green synthesis and characterization of titanium dioxide nanoparticles using leaf extract of Pouteria campechiana and larvicidal and pupicidal activity on Aedes aegypti" [Environ. Res. 200 (2021) 111333].
Environ Res
January 2025
School of Renewable Energy, Maejo University, Chiang Mai 50290, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan.
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/locate/withdrawalpolicy).
View Article and Find Full Text PDFIsolation and identification of the active constituent β-isocostic acid from the hexane extract of the leaves of Sphaeranthus indicus against mosquito vectors.
Toxicon
January 2025
Entomology Research Institute, Loyola Campus, Chennai, 600034, India.
Mosquitoes, as hematophagous ectoparasites, are significant pests and vectors of numerous pathogens, causing diseases such as dengue, lymphatic filariasis, malaria, chikungunya, and Japanese encephalitis in India. This study investigates the potential of natural insecticides derived from plants to combat mosquito populations, focusing on botanical extract from the leave of Sphaeranthus indicus. Specifically, the hexane extract of S.
View Article and Find Full Text PDFStructural elucidation of andrographolide from Andrographis paniculata and its ovicidal, larvicidal and pupicidal activities against Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae).
Exp Parasitol
December 2024
Entomology Research Institute, Loyola Campus, Chennai, 600034, India.
Article Synopsis
- Mosquitoes can transmit various infectious diseases to humans and animals, prompting research into natural compounds for control.
- The study focuses on isolating and characterizing andrographolide from the plant Andrographis paniculata, assessing its effects on mosquito eggs, larvae, and pupae.
- Results show that andrographolide has moderate effects on mosquito egg mortality and strong efficacy against larvae and pupae, suggesting it as a promising alternative to synthetic insecticides for managing mosquito populations.
Synergistic Larvicidal and Pupicidal Toxicity and the Morphological Impact of the Dengue Vector () Induced by Geranial and -Cinnamaldehyde.
Insects
September 2024
Office of Administrative Interdisciplinary Program on Agricultural Technology, School of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand.
Monoterpenes are effective and eco-friendly alternatives to conventional chemical larvicides. We tested single and binary mixtures of monoterpenes-geranial and -cinnamaldehyde-for their larvicidal and pupicidal activities against L. and for non-target toxicity on guppies ( Peters), using 1% (/) temephos as a reference.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!