International Journal of Tropical Insect Science (2004) 24, 340-342

S. Rajkumar and A. Jebanesan (2004)
Ovicidal activity of Solanum trilobatum L. (Solanaceae) leaf extract against Culex quinquefasciatus Say and Culex tritaeniorhynchus Giles (Diptera: Culicidae)
International Journal of Tropical Insect Science 24 (4), 340-342
Abstract: An acetone extract of Solanum trilobatum leaves was evaluated for its ovicidal activity on the mosquito species Culex quinquefasciatus and Culex tritaeniorhynchus, by exposing eggs ranging in age from 0 to 18 h to concentrations of 50-200 ppm of the extract, and assessing their percent hatchability. A 100-ppm dose of the extract killed all of the eggs from both species aged between 0 and 6 h. The 50- and 75-ppm concentrations were also highly effective against young eggs; the effect declined in older eggs. The extract was more ovicidal towards C. quinquefasciatus than C. tritaeniorhynchus.

On a testé l'activité ovicide d'un extrait à l'acétone de feuilles de Solanum trilobatum sur les deux espèces de moustiques, Culex quinquefasciatus et Culex tritaeniorhynchus, en exposant des oeufs âgés de 0 à 18 h à des concentrations de l'extrait compris entre 50 et 200 ppm et en évaluant le pourcentage d'éclosions. La concentration à 100 ppm de l'extrait tue tous les oeufs d'âge compris entre 0 et 6 h des deux espèces de moustique. Les concentrations à 50 et 75 ppm sont également très efficaces contre les jeunes oeufs, mais l'effet diminue avec l'âge des oeufs. L'extrait est plus efficace vis à vis de C. quinquefasciatus que de C. tritaeniorhynchus.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Arulsamy Jebanesan

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Culex quinquefasciatus		India
	Culex tritaeniorhynchus		India