<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The study examined the repellency of <italic>Gardenia jasminoides</italic> ethanol-extracted oil against the German cockroach, <italic>Blattella germanica</italic>, and the pharaoh ant, <italic>Monomorium pharaonis</italic>, which are serious pests in areas of public health hygiene. For the repellency tests, 31.4 μg of the oil was applied per cm<sup>2</sup> on one half of filter paper discs (9 or 15 cm diameter for the ant and cockroach, respectively), whereas the other half was treated as control (DMSO + Tween). Repellency effects were observed 1, 2, 3 and 4 h after the insect release. The oil showed high repellency against all life stages of cockroaches and worker ants. The maximum repellency was observed for the cockroach adults (81.7 ± 3.1%) followed by the fourth, third and second nymphal stages (76.7 ± 4.2, 75.0 ± 3.4, and 56.7 ± 8.4%, respectively), after 1h exposure. The repellence effect was strong against worker ants (78.3 ± 4.8%) after 1 h exposure. The repellence effect can last at least four hours for both species. Analysis of <italic>Gardenia</italic> oil with Gas chromatography-mass spectrometry identified 14 major chemical components.</p>
</abstract>

The study examined the repellency of Gardenia jasminoides ethanol-extracted oil against the German cockroach, Blattella germanica, and the pharaoh ant, Monomorium pharaonis, which are serious pests in areas of public health hygiene. For the repellency tests, 31.4 μg of the oil was applied per cm2 on one half of filter paper discs (9 or 15 cm diameter for the ant and cockroach, respectively), whereas the other half was treated as control (DMSO + Tween). Repellency effects were observed 1, 2, 3 and 4 h after the insect release. The oil showed high repellency against all life stages of cockroaches and worker ants. The maximum repellency was observed for the cockroach adults (81.7 ± 3.1%) followed by the fourth, third and second nymphal stages (76.7 ± 4.2, 75.0 ± 3.4, and 56.7 ± 8.4%, respectively), after 1h exposure. The repellence effect was strong against worker ants (78.3 ± 4.8%) after 1 h exposure. The repellence effect can last at least four hours for both species. Analysis of Gardenia oil with Gas chromatography-mass spectrometry identified 14 major chemical components.

Repellent effect of <italic>Gardenia jasminoides</italic> ethanol extracted oil on <italic>Blattella germanica</italic> and <italic>Monomorium pharaonis</italic>

Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory

Dokri 77060, A constitute College of Sindh Agriculture University

Hellenic Plant Protection Journal

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

Repellent effect of  ethanol extracted oil on  and 

The study examined the repellency of Gardenia jasminoides ethanol-extracted oil against the German cockroach, Blattella germanica, and the pharaoh ant,...

Repellent effect of Gardenia jasminoides ethanol extracted oil on Blattella germanica and Monomorium pharaonis

Publié en ligne: 16 juil. 2023

Pages: 50 - 58

Reçu: 03 juil. 2022

Accepté: 11 juin 2023

DOI: https://doi.org/10.2478/hppj-2023-0007

Mots clés
ants, cockroaches, ethanol-extracted oil, repellent

© 2023 T.A. Wagan et al., published by Sciendo

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

Repellent effect of Gardenia jasminoides ethanol extracted oil on Blattella germanica and Monomorium pharaonis

Publié en ligne: 16 juil. 2023

Pages: 50 - 58

Reçu: 03 juil. 2022

Accepté: 11 juin 2023

DOI: https://doi.org/10.2478/hppj-2023-0007

Mots clésants, cockroaches, ethanol-extracted oil, repellent

© 2023 T.A. Wagan et al., published by Sciendo

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

Mots clés
ants, cockroaches, ethanol-extracted oil, repellent