Araştırma Makalesi

Determination of tannin activity and Paenibacillus alvei (Cheshire & Cheyne) Ash et al. (Bacillii: Paenibacillaceae) on the biocontrol of tannin-tolerant Agelastica alni L., 1758 (Coleoptera: Chrysomelidae) larvae

Cilt: 49 Sayı: 2 25 Haziran 2025
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Determination of tannin activity and Paenibacillus alvei (Cheshire & Cheyne) Ash et al. (Bacillii: Paenibacillaceae) on the biocontrol of tannin-tolerant Agelastica alni L., 1758 (Coleoptera: Chrysomelidae) larvae

Abstract

Tannins are among the most abundant secondary metabolites synthesized by plants. Agelastica alni L., 1758 (Coleoptera: Chrysomelidae) is a critical forest pest. This study investigated the effect of Paenibacillus alvei (Cheshire & Cheyne) Ash et al. (Bacillii: Paenibacillaceae) and tannins against A. alni larvae. The larvae were collected from the Çayeli district of Rize province in 2022. In the feeding experiments, artificial diets containing 1.25%, 2.5% and 5% tannins were prepared. 100 and 200 µl of P. alvei were applied to the infected groups. Nutritional indices, pupal masses, phenoloxidase activities, antioxidant enzyme activities and mortality rates of larvae fed with different diets were studied. Relative consumption rate (RCR) increased with tannin concentration in all groups. Relative growth rate (RGR) increased with rising tannin concentrations across all groups. In the infected groups, the increase in tannin concentration caused a decrease in developmental time. While superoxide dismutase and phenoloxidase activities of uninfected larvae decreased with tannin concentration, catalase and glutathione peroxidase activities of larvae increased. In infected larvae, catalase activity decreased with increasing tannin concentration. The dose of P. alvei caused an increase in superoxide dismutase and phenoloxidase activities, but did not affect catalase and glutathione peroxidase activities. The diet containing 5% tannic acid had the lowest mortality rate.

Keywords

Destekleyen Kurum

Recep Tayyip Erdoğan University, The Scientific Research Projects Unit, Rize, Türkiye, Grant Project No: FBA-2022-1372

Proje Numarası

FBA-2022-1372

Kaynakça

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  8. Barbehen, R. V. & M. M. Martin, 1992. The protective role of the peritrophic membrane in the tannin-tolerant larvae of Orgyia leucostigma (Lepidoptera). Journal of Insect Physiology, 38 (12): 973-980.

Ayrıntılar

Birincil Dil

İngilizce

Konular

Entomoloji , Orman Entomolojisi ve Orman Koruma

Bölüm

Araştırma Makalesi

Yayımlanma Tarihi

25 Haziran 2025

Gönderilme Tarihi

21 Mart 2025

Kabul Tarihi

23 Haziran 2025

Yayımlandığı Sayı

Yıl 2025 Cilt: 49 Sayı: 2

Kaynak Göster

APA
Altun, N., Topçu, E., Kılcı, L., Alpay Karaoğlu, Ş., & Faiz, Ö. (2025). Determination of tannin activity and Paenibacillus alvei (Cheshire & Cheyne) Ash et al. (Bacillii: Paenibacillaceae) on the biocontrol of tannin-tolerant Agelastica alni L., 1758 (Coleoptera: Chrysomelidae) larvae. Turkish Journal of Entomology, 49(2), 213-227. https://doi.org/10.16970/entoted.1661578