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Journals / Bitki Koruma Bülteni / 2026 / Cilt: 66 Sayı: 1

INTERACTIONS BETWEEN Psyllobora vigintiduopunctata (L.) (COLEOPTERA: COCCINELLIDAE) AND CUCURBIT POWDERY MILDEW

Psyllobora vigintiduopunctata (L.) (Coleoptera: Coccinellidae) ile Kabakgil Külleme Hastalığı Arasındaki İlişkiler

Furkan Yalçın(Plant Protection Central Research Institute)0000-0003-2183-1009
Selma Ülgentürk(ANKARA ÜNİVERSİTESİ, ZİRAAT FAKÜLTESİ, BİTKİ KORUMA BÖLÜMÜ, BİTKİ KORUMA PR.)0000-0003-2521-8471
Mehmet Salih Özgökçe(VAN YÜZÜNCÜ YIL ÜNİVERSİTESİ, ZİRAAT FAKÜLTESİ, BİTKİ KORUMA BÖLÜMÜ)0000-0002-6777-9149
Pages
1–9
Publication Date
2026-03-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results indicated that mean lifetime fecundity ranged from 317.48±142 to 376.55±146 eggs per female.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In cucurbit production, fungicides used to control powdery mildew, which significantly reduces product yield and quality, generate environmental pollution and residues.
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Key Findings & Data:To evaluate the potential of Psyllobora vigintiduopunctata (Linnaeus) (Coleoptera: Coccinellidae) as a biological control agent against Erysiphe cichoracearum (DC.) (Erysiphales: Erysiphaceae), biological parameters and population dynamics were determined under controlled conditions (25±2 °C, 70±5% humidity, 12:12 photoperiod) for two generations.
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Conclusion & Impact:The results indicated that mean lifetime fecundity ranged from 317.48±142 to 376.55±146 eggs per female.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:The 22-spotted ladybird · Two-sex life table · Mycophagous

Abstract

In cucurbit production, fungicides used to control powdery mildew, which significantly reduces product yield and quality, generate environmental pollution and residues. Sustainable approaches are therefore needed to control this disease. To evaluate the potential of Psyllobora vigintiduopunctata (Linnaeus) (Coleoptera: Coccinellidae) as a biological control agent against Erysiphe cichoracearum (DC.) (Erysiphales: Erysiphaceae), biological parameters and population dynamics were determined under controlled conditions (25±2 °C, 70±5% humidity, 12:12 photoperiod) for two generations. A two-sex, age-stage life table approach was used to analyse the data. The results indicated that mean lifetime fecundity ranged from 317.48±142 to 376.55±146 eggs per female. P. vigintiduopunctata completed its development in 26.7–28.4 days in both generations. The total longevity of females was 102 to 108 days, while males had a lifespan of 106 to 107 days. The intrinsic rate of increase (r) of the predator on E. cichoracearum was found to be between 0.0788 and 0.0829 females/day, while the mean generation time (T) varied between 58.7 and 61.5 days. The gross reproductive rate (GRR), which represents the number of offspring produced per female per generation, ranged from 219.5 to 228.5 individuals. These laboratory results indicate a promising potential for P. vigintiduopunctata as a biological control agent against E. cichoracearum in cucurbits.

Özet

In cucurbit production, fungicides used to control powdery mildew, which significantly reduces product yield and quality, generate environmental pollution and residues. Sustainable approaches are therefore needed to control this disease. To evaluate the potential of Psyllobora vigintiduopunctata (Linnaeus) (Coleoptera: Coccinellidae) as a biological control agent against Erysiphe cichoracearum (DC.) (Erysiphales: Erysiphaceae), biological parameters and population dynamics were determined under controlled conditions (25±2 °C, 70±5% humidity, 12:12 photoperiod) for two generations. A two-sex, age-stage life table approach was used to analyse the data. The results indicated that mean lifetime fecundity ranged from 317.48±142 to 376.55±146 eggs per female. P. vigintiduopunctata completed its development in 26.7–28.4 days in both generations. The total longevity of females was 102 to 108 days, while males had a lifespan of 106 to 107 days. The intrinsic rate of increase (r) of the predator on E. cichoracearum was found to be between 0.0788 and 0.0829 females/day, while the mean generation time (T) varied between 58.7 and 61.5 days. The gross reproductive rate (GRR), which represents the number of offspring produced per female per generation, ranged from 219.5 to 228.5 individuals. These laboratory results indicate a promising potential for P. vigintiduopunctata as a biological control agent against E. cichoracearum in cucurbits.

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Cite This Article

Yalçın, F., Ülgentürk, S., Özgökçe, M. S. (2026). INTERACTIONS BETWEEN Psyllobora vigintiduopunctata (L.) (COLEOPTERA: COCCINELLIDAE) AND CUCURBIT POWDERY MILDEW. Bitki Koruma Bülteni, Cilt: 66 Sayı: 1, 1–9. https://doi.org/10.16955/bitkorb.1758992

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