ARCHIVES
VOL. 11, ISSUE 1 (2026)
Effects of two water-based plant extracts, Hyptis suaveolens and Ricinus communis, on the developmental stages of Leptoglossus membranaceus in Daloa, Côte d’Ivoire
Authors
Fondio Drissa, Sib Ollo, Soro Lacina, Yohou Olivier Saint-Clair, Yao N’guessan
Abstract
This study assessed the bioinsecticidal
effects of two water-based plant extracts, Hyptis suaveolens (L.) and Ricinus
communis (L.), on the developmental stages of Leptoglossus membranaceus
Fabricius (1781) (Heteroptera: Coreidae) in Daloa, Côte d’Ivoire. Systemic
applications were administered by injection into eggs, larvae, and adults. The R.
communis extract showed the highest effectiveness on eggs, reducing
fertility to 43.8% ± 1.02 at a concentration of 0.8 g/ml. For first-instar
larvae, H. suaveolens was most effective at 0.1 g/ml, while R.
communis performed better across later larval stages at concentrations of
0.2-0.8 g/ml. Concerning adult mortality, R. communis achieved a 78.18%
kill rate at 1 g/ml, with the lowest lethal doses recorded at 0.7 g/ml for
males and 0.8 g/ml for females. Notably, both extracts decreased the fertility
of surviving females to 45% at lethal concentrations. These results demonstrate
the potential of botanical insecticides for integrated pest management in
agroecological systems.
Download
Pages:359-364
How to cite this article:
Fondio Drissa, Sib Ollo, Soro Lacina, Yohou Olivier Saint-Clair, Yao N’guessan "Effects of two water-based plant extracts, <i>Hyptis suaveolens</i> and <i>Ricinus communis</i>, on the developmental stages of <i>Leptoglossus membranaceus</i> in Daloa, Côte d’Ivoire". International Journal of Entomology Research, Vol 11, Issue 1, 2026, Pages 359-364
Download Author Certificate
Please enter the email address corresponding to this article submission to download your certificate.