Adulticidal activity against Stegomyia aegypti (Diptera: Culicidae) of three Piper spp.

• Main Authors: Wej Choochote, Udom Chaithong, Kittichai Kamsuk, Eumporn Rattanachanpichai, Atchariya Jitpakdi, Pongsri Tippawangkosol, Dana Chaiyasit, Daruna Champakaew, Benjawan Tuetun, Benjawan Pitasawat
• Format: Article in Journal/Newspaper
• Language: English
• Published: Universidade de São Paulo (USP) 2006
• Subjects: Piper; Piper longum; Piper ribesoides; Piper sarmentosum; Stegomyia aegypti; Adulticidal activity; Topical application; Arctic medicine. Tropical medicine; RC955-962; Infectious and parasitic diseases; RC109-216; Arctic
• Online Access: https://doaj.org/article/75eb453acfe64242acde473097282810

Three Piper species, Piper longum, P. ribesoides and P. sarmentosum, were selected for investigation of adulticidal potential against Stegomyia aegypti, a main vector of dengue and dengue haemorrhagic fever. Successive extraction by maceration with 95% ethanol showed percentage yields of ethanolic extracts, which derived from P. longum, P. ribesoides and P. sarmentosum, of 8.89, 3.21 and 5.30% (w/w), respectively. All Piper extracts illustrated an impressive adulticidal activity when tested against female mosquitoes by topical application. The susceptibility of St. aegypti females to ethanol-extracted Piper was dose dependent and varied among the plant species. The highest adulticidal effect was established from P. sarmentosum, followed by P. ribesoides and P. longum, with LD50 values of 0.14, 0.15 and 0.26 µg/female, respectively. The potential of these Piper species, as possible mosquitocides, established convincing activity for further researches to develop natural substances for combat against adult mosquitoes.