Extracts from 56 species of plants in the Euro-Asiatic region were tested for larvicidal activity against the fourth larval instar of the mosquito Culex quinquefasciatus Say (Diptera: Culicidae). All plant extracts showed larvicidal activity after 24 h of exposure to the plant extracts in a maximal dose of 500 ppm. The extracts of the plants Otanthus maritimus and Ammi visnaga displayed the highest larvicidal effect (LD(50) 7 and 9 ppm, respectively) followed by Acer pseudoplatanus, Humulus japonicus, Acer platanoides, Satureja hortensis, Ocimum basilicum and Thymus vulgaris (LD(50) 23, 25, 28, 28, 32 and 48 ppm respectively). For eight species, the appraisal value of LD(50) was between 51 and 100 ppm, another eight species from 101 to 200 ppm, 15 species from 201 to 500 ppm and for 17 species, low mortality showed no lethal dose (LD(50)>500 ppm).

Crop Research Institute Drnovská 507 Prague 6 161 06 Czech Republic

Zobrazit více v PubMed

Rev Soc Bras Med Trop. 1999 Jan-Feb;32(1):23-9 PubMed

Fitoterapia. 2005 Dec;76(7-8):691-6 PubMed

J Am Mosq Control Assoc. 1993 Jun;9(2):164-8 PubMed

Bioresour Technol. 2007 Sep;98(13):2549-56 PubMed

Clin Infect Dis. 2004 Mar 15;38(6):871-8 PubMed

J Am Mosq Control Assoc. 1995 Mar;11(1):1-5 PubMed

Fitoterapia. 2004 Dec;75(7-8):745-9 PubMed

Mosquitocidal activities of thyme oils (Thymus vulgaris L.) against Culex quinquefasciatus (Diptera: Culicidae)

Larvicidal effects of some Euro-Asiatic plants against Culex quinquefasciatus Say larvae (Diptera: Culicidae)