Research Article

The In Vitro Effects of Aqueous and Ethanolic Extracts of the Leaves of Ageratum conyzoides (Asteraceae) on Three Life Cycle Stages of the Parasitic Nematode Heligmosomoides bakeri (Nematoda: Heligmosomatidae)

Table 1

Variation of the mean embryonation and hatching rates of Heligmosomoides bakeri eggs according to the concentration (mg·mL−1) of aqueous and ethanolic extract of leaves of Ageratum conyzoides.

TreatmentNegative controlsTested concentrations (mg mL−1)
Distilled water5% tween0.6251.252.53.75

EmbryonationAqueous extract100.0 ± 0.0NA94.5 ± 7.885.1 ± 6.275.7 ± 5.753.3 ± 10.9
Ethanolic extractNA100.0 ± 0.096.1 ± 2.991.5 ± 6.077.7 ± 13.339.6 ± 2.9

hatchingAqueous extract97.9 ± 2.6NA97.0 ± 6.185.2 ± 13.859.1 ± 26.248.7 ± 27.2
Ethanolic extractNA100.0 ± 0.061.4 ± 8.447.5 ± 9.626.4 ± 12.526.7 ± 7.3

NA: not applicable.