Chemical composition and larvicidal toxicity of Ricinus communis L. (Euphorbiaceae) extracts against larvae of Thaumetopoea pityocampa (Denis & Schiffermüller, 1775) (Lepidoptera: Notodontidae)

Authors

MEMİŞ KESDEKFollow
ŞABAN KORDALIFollow
SELÇUK KÜÇÜKAYDINFollow

Abstract

In this study, the toxicities of extracts obtained from the seeds and leaves of castor bean (Ricinus communis L.) (Euphorbiaceae) plant against five larval stages of the pine processionary moth (PPM) (Thaumetopoea pityocampa (Denis & Schiffermüller, 1775) (Lepidoptera: Notodontidae)) were investigated under laboratory conditions. Petroleum ether, acetone, and methanol extracts were prepared at various concentrations (0.25, 0.5, and 1 mg/mL) and sprayed on each larval stage. Each test was performed with three replications and two repetitions. Sterile water + ethanol was used as a negative control and the commercial chemical Kormilin 25 WP (25% diflubenzuron) was used as a positive control. The extracts caused between 10% and 100% mortality at 96 h after exposure. The highest mortality rates of 83.30%, 86.60%, and 100% were recorded with the acetone extract of R. communis for the L2 stage. Considering the LD25, LD50 and LD90 lethal values, the most toxic values were respectively determined as 0.167, 0.003, and 0.001 mg/larvae for the L2 , L5 , and L5 stages with the acetone extract. The compounds of the extracts were also analyzed by gas chromatography and gas chromatography–mass spectrometry methods. Ricinoleic acid (84.80%), linoleic acid (4.75%), and oleic acid (3.83%) were the major components. These results showed that the three extracts of R. communis have larvicidal potential in the control of PPM larvae.

Author ORCID Identifier

MEMİŞ KESDEK: 0000-0001-9881-4050

ŞABAN KORDALI: 0000-0001-5669-5831

SELÇUK KÜÇÜKAYDIN: 0000-0001-8538-6528

DOI

10.55730/1300-011X.3247

Keywords

Ricinus communis, extract, Taumetopoea pityocampa, larvicidal effect

First Page

37

Last Page

50

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

KESDEK, MEMİŞ; KORDALI, ŞABAN; and KÜÇÜKAYDIN, SELÇUK (2025) "Chemical composition and larvicidal toxicity of Ricinus communis L. (Euphorbiaceae) extracts against larvae of Thaumetopoea pityocampa (Denis & Schiffermüller, 1775) (Lepidoptera: Notodontidae)," Turkish Journal of Agriculture and Forestry: Vol. 49: No. 1, Article 4. https://doi.org/10.55730/1300-011X.3247
Available at: https://journals.tubitak.gov.tr/agriculture/vol49/iss1/4