Journals / Türkiye Biyolojik Mücadele Dergisi / 2012 / Cilt: 3 - Sayı: 2

Farklı sıcaklıkların Aphis gossypii Glover (Hemiptera: Aphididae) üzerinde beslenen Scymnus subvillosus (Geoeze) (Coleoptera: Coccinellidae)’un gelişimi ve üreme gücüne etkileri

The effects of various temperatures on development and fecundity of Scymnus subvillosus (Goeze) (Coleoptera: Coccinellidae) feeding on Aphis gossypii Glover (Hemiptera: Aphididae)

Pages
169–182
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

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

Development from egg to adult required 286 DD (degree-days) above a base of 10.26 °C, estimated as developmental threshold, and predator can produce 9.92 generations per year in Adana, Turkey.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, the development survival, and fecundity of Scymnus subvillosus (Goeze) (Coleoptera: Coccinellidae) were determined at five constant temperatures (15, 20, 25, 30 and 35 ±1 °C) and one alternate temperature (25/35±1 °C), 60 ± 10% RH and a photoperiod of 16:8 h (L:D), (5,000 lux) in the climate chamber.
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Key Findings & Data:Development time from egg to adult of S. subvillosus significantly decreased, varying from 14.2 days at 30 °C to 31.0 days at 20 °C.
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Conclusion & Impact:Development from egg to adult required 286 DD (degree-days) above a base of 10.26 °C, estimated as developmental threshold, and predator can produce 9.92 generations per year in Adana, Turkey.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Scymnus subvillosus · sıcaklık · gelişme süresi

Abstract

In this study, the development survival, and fecundity of Scymnus subvillosus (Goeze) (Coleoptera: Coccinellidae) were determined at five constant temperatures (15, 20, 25, 30 and 35 ±1 °C) and one alternate temperature (25/35±1 °C), 60 ± 10% RH and a photoperiod of 16:8 h (L:D), (5,000 lux) in the climate chamber. Development time from egg to adult of S. subvillosus significantly decreased, varying from 14.2 days at 30 °C to 31.0 days at 20 °C. Development was not completed at 15 and 35 °C. The oviposition period lasted 67.9, 48.6, 42.5 and 40.3 days at 20, 25, 30 and 25/35 °C, respectively. The highest total fecundity and daily oviposition rate per female were obtained at 30°C as 499.5 eggs/♀ and 11.8 eggs/day, respectively. The highest intrinsic rate of increase (rm= 0.155 d-1 ) and net reproduction rate (R0= 109.51) values were determined at 30 °C and they were the lowest at 20 °C (rm= 0.058 d-1 and R0= 64.77). The mean generation time (T0) was the shortest at 30°C (T0= 39.99 d) and was the longest at 20 °C (90.62 d). Development from egg to adult required 286 DD (degree-days) above a base of 10.26 °C, estimated as developmental threshold, and predator can produce 9.92 generations per year in Adana, Turkey.

Özet

Bu çalışmada, Aphis gossypii Glover (Hemiptera: Aphididae) ile beslenen Scymnus subvillosus (Goeze) (Coleoptera: Coccinellidae)’un gelişme, canlı kalma oranı ve üremesi beş farklı sabit (15, 20, 25, 30, 35 °C) ve bir değişken sıcaklık (25-35 °C), %60 ± 10 orantılı nem ve 16 saat aydınlatma koşullarına sahip iklim dolaplarında yürütülmüştür. Yumurtadan ergine gelişme süresi sıcaklığın artmasıyla birlikte önemli ölçüde kısalmış olup, 14.2 gün (30 °C) ile 31.0 gün (20 °C)’ arasında değişmiştir. Avcının gelişmesi 15 ve 35 °C sıcaklıklarda tamamlanamamıştır. Ovipozisyon periyodu 20, 25, 30 ve 25-35 °C’ de sırasıyla 67.9, 48.6, 42.5 ve 40.3 gün sürmüştür. En yüksek günlük ve toplam yumurta sayısı değerleri 30 °C’ de (11.8 dişi/gün ve 499.5 dişi/ömür) elde edilmiştir. Net üreme gücü ve kalıtsal üreme yeteneği değerleri 30 °C’ de (R0 = 109.51, rm= 0.155 gün-1 ) en yüksek, 20 °C’ de (R0= 64.77 ve rm= 0.058 gün-1 ) ise en düşük olarak bulunmuştur. Ortalama döl süresi (T0) sıcaklıktaki artışla birlikte kısalmış ve 39.99 gün (30 °C) ile 90.62 gün (20 °C) arasında değişmiştir. S. subvillosus’ un yumurtadan ergine gelişme eşiği sıcaklığının 10.26 °C, bir dölünü tamamlaması için gerekli etkili sıcaklıklar toplamının 286 günderece olduğu ve Adana (Türkiye)’da yılda 9.92 döl verebileceği hesaplanmıştır.

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Cite This Article

UYGUN, N., SATAR, G. (2022). Farklı sıcaklıkların Aphis gossypii Glover (Hemiptera: Aphididae) üzerinde beslenen Scymnus subvillosus (Geoeze) (Coleoptera: Coccinellidae)’un gelişimi ve üreme gücüne etkileri. Türkiye Biyolojik Mücadele Dergisi, Cilt: 3 - Sayı: 2, 169–182. https://ajindex.com/articles/627035

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