Evaluation of Two Different Solvents for Azolla pinnata Extracts on Chemical Compositions and Larvicidal Activity against Aedes albopictus (Diptera: Culicidae)

Table 1

Larvicidal activity of Azolla pinnata extracts against late 3rd instar larvae of Aedes albopictus.

Extraction solvent	N^a	LC50 (ppm) (95% LCL–UCL)	LC95 (ppm) (95% LCL–UCL)	Time (h)
Acetone	700	1072; (994–1146); Y = −30.339 + 10.011X	1302; (1214–1435); Y = −30.339 + 10.011X	24
Acetone	700	904; (854–952); Y = −26.159 + 8.848X	1126; (1068–1198); Y = −26.159 + 8.848X	48
Methanol	700	867; (776–958); Y = −14.264 + 4.854X	1293; (1257–1498); Y = −14.264 + 4.854X	24
Methanol	700	674; (606–733); Y = −14.975 + 5.293X	972; (899–1064); Y = −14.975 + 5.293X	48

^aTotal number of larvae used in this study; n = 25 with 4 replicates per concentration; LC₅₀: lethal concentration with 50% mortality; LC₉₅: lethal concentration with 95% mortality; LCL: lower confidence limits; UCL: upper confidence limits.