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Sevcan Oztemiz - One of the best experts on this subject based on the ideXlab platform.
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efficacy of Trichogramma evanescens and bacillus thuringiensis var kurstaki in control of cydia pomonella l in turkey
Turkish Journal of Agriculture and Forestry, 2017Co-Authors: Sevcan Oztemiz, Ali Kuden, Isilay LavkorAbstract:This study was conducted to evaluate the effectiveness of Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) release with as well as without Bacillus thuringiensis var. kurstaki (Berliner) in biological control of Cydia pomonella (L.) (Lepidoptera: Tortricidae) in the Galaxy Gala apple variety grafted onto M9 rootstock in 2016. Four treatments were analyzed: releasing T. evanescens alone (TE), applying B. thuringiensis var. kurstaki (BT) alone, applying both (TE + BT), and a control (C) without any application at all. The experiment design entailed randomized blocks with four replicates. In each generation of the egg stage, 100,000 parasitoids per hectare were released twice (1440 parasitoids/plot), with an interval of 7-10 days. In the larval stage, BT was applied twice for the first generation and once for the second. Weekly counts were performed regularly. The decrease in egg count was 52.15% in TE, 58.99% in BT, and 65.46% in TE + BT plots. The decrease observed in larval numbers was 68%, 73.33%, and 94.66%, respectively. Egg parasitization rates varied between 58.64% and 69.79%. At harvest, fruit infestation rates were 9.66% and 8.33% in TE and BT plots and just 2.0% in the TE + BT plot, versus 34% in the control plot. Promising results were achieved in biological control of C. pomonella when TE was combined with BT. The combined treatment of both biological control agents significantly decreased the population of the pests and crop damage. The natural enemy alone was not effective in keeping the population below the economic threshold level.
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depolanmis urunlerde zararli ephestia kuehniella zeller lepidoptera pyralidae nin biyolojik mucadelesinde yumurta parazitoidi Trichogramma evanescens westwood hymenoptera Trichogrammatidae in etkinliginin belirlenmesi determination of parasitoid perf
Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2016Co-Authors: Sevcan OztemizAbstract:Bu arastirmada Ephestia kuehniella Zeller (Lepidoptera: Pyralidae)’nin biyolojik mucadelesinde Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae)’in parazitleme kapasitesinin belirlenmesi amaclanmistir. Bu amacla, T. evanescens’in yasinin omur boyunca parazitledigi E. kuehniella yumurta sayisi, parazitleme orani, ergin cikisi ve disi oranina etkisi belirlenmis, ayrica konukcu yumurta yasinin T.evanescens’in parazitleme kapasitesine etkisi arastirilmistir. Deneme, 26±1 oC sicaklik, % 65±10 oransal nem, 16 saat aydinlik, 8 saat karanlik uzun gun aydinlatmali iklim odasinda yurutulmustur. T. evanescens disileri bir gunluk yumurtalari en fazla oranda tercih etmislerdir. E. kuehniella yumurta yasi ilerledikce T. evanescens disisi tarafindan parazitlenen yumurta sayisi azalmistir. T. evanescens’in omru boyunca parazitledigi Ephestia kuehniella yumurtalarinin %75’ini birinci gun parazitledigi ortaya cikmistir. Parazitlenme orani altinci gunden itibaren % 50’nin altina dusmus, sekizinci gundeki parazitlenme orani birinci gundekine gore % 50 oraninda azalis ile % 34.4 olarak gerceklesmistir. Parazitoidin cikis orani % 95.06, disi orani ise % 83.77 olarak belirlenmistir. Sonuc olarak, T. evanescens’in parazitleme kapasitesinin yuksek oldugu ve E. kuehniella populasyonunu onemli olcude azaltici etkisinin oldugu, depolanmis urunlerde ozellikle un degirmenlerinde zararli olan E. kuehniella’nin biyolojik mucadelesinde kullanilabilecek potansiyele sahip oldugu bu arastirma ile ortaya cikmistir. In this study we have tested parasitization performance of Trichogramma evanescens Westwood (Lepidoptera: Trichogrammatidae) in biological control of Ephestia kuehniella Zeller (Lepidoptera: Pyralidae). The effects of parasitoid age on parasitization performance of T. evanescens during lifespan, parasitism rate, sex ratio and emergence were studied. We also evaluated the host age on parasitism capacity of T. evanescens. Experiment was carried out in climatic room at 26±1 oC temperature, 65±10 % humidity, 16 hours light, 8 hours dark regime. The most prefered host eggs were the youngest (one day-old) and the number of parasitized egg decreased with increasing host age. In the first day of total lifespan, 75 % of E. kuehniella eggs were parasitized by T. evanescens. Most of the parasitizations were performed by T. evanescens during the first day of parasitism, and 75% of the E. kuehniella eggs were parasitized at this day. This rate decreased below 50% at six day, and 34.4 % at eight day. The emergence rate of parasitoid adults was 95.06 %, Female biassed sex ratio was observed and the percentage of female was 83.77. It was determined that the parasitism capacity of T. evanescens was high and caused significant decrease in the E. kuehniella population. It was concluded that this parasitoid can be able to use in biological control of stored product moths, especially E. kuehniella in flour mi
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Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)’nın Biyolojik Mücadelesinde Nesidiocoris tenuis (Reuter) ve Trichogramma evanescens Westwood’in Etkinliğinin Belirlenmesi
2015Co-Authors: Sevcan Oztemiz, Mustafa PortakaldaliAbstract:Ozet Ulkemize 2009 yilinda giris yapan ve ortualti domates yetistiriciliginde ana zararli konumuna gecen, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)’nin biyolojik mucadelesinde yerli turlerimizden, Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) ve Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae)’in salim etkinliklerinin belirlenmesi icin calisma, Eylul 2011-Nisan 2012 doneminde yurutulmustur. Dort farkli uygulama yapilmistir: 1. T. evanescens salimi, 2. N. tenuis salimi, 3. T.evanescens ile N. tenuis ’un birlikte salimi, 4. Kontrol. Deneme, tesaduf bloklari deneme desenine gore uc tekerrurlu olarak kurulmustur. Haftalik sayimlar yapilmistir. Zararlinin yumurta ve larva sayilarindaki azalma parazitoit ve avci salimlarinin ayri ayri ve birlikte yapildigi parsellerde sirasi ile %51.79 ve % 50.27, %47.80 ve %37.77, % 79.68 ve 78.53 % olarak belirlenmistir. T. absoluta yumurtalarinda parazitlenme orani %57.85-59.25 arasinda degismistir. Bulasik meyve orani parazitoit ve avci salimlarinin ayri ayri ve birlikte yapildigi parsellerde sirasi ile %11, % 13 ve % 4 iken, kontrol parselinde % 77 olarak tespit edilmistir. Sonuc olarak; T. absoluta ’nin biyolojik mucadelesinde N. tenuis ve T. evanescens’ in ayri ayri tek basina salimlarindan ziyade birlikte salimi yapildiginda umit var sonuclar elde edilmistir.
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tuta absoluta meyrick lepidoptera gelechiidae nin biyolojik mucadelesinde nesidiocoris tenuis reuter ve Trichogramma evanescens westwood in etkinliginin belirlenmesi
Selcuk Journal of Agriculture and Food Sciences, 2015Co-Authors: Sevcan Oztemiz, Mustafa PortakaldaliAbstract:Ozet Ulkemize 2009 yilinda giris yapan ve ortualti domates yetistiriciliginde ana zararli konumuna gecen, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)’nin biyolojik mucadelesinde yerli turlerimizden, Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) ve Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae)’in salim etkinliklerinin belirlenmesi icin calisma, Eylul 2011-Nisan 2012 doneminde yurutulmustur. Dort farkli uygulama yapilmistir: 1. T. evanescens salimi, 2. N. tenuis salimi, 3. T.evanescens ile N. tenuis ’un birlikte salimi, 4. Kontrol. Deneme, tesaduf bloklari deneme desenine gore uc tekerrurlu olarak kurulmustur. Haftalik sayimlar yapilmistir. Zararlinin yumurta ve larva sayilarindaki azalma parazitoit ve avci salimlarinin ayri ayri ve birlikte yapildigi parsellerde sirasi ile %51.79 ve % 50.27, %47.80 ve %37.77, % 79.68 ve 78.53 % olarak belirlenmistir. T. absoluta yumurtalarinda parazitlenme orani %57.85-59.25 arasinda degismistir. Bulasik meyve orani parazitoit ve avci salimlarinin ayri ayri ve birlikte yapildigi parsellerde sirasi ile %11, % 13 ve % 4 iken, kontrol parselinde % 77 olarak tespit edilmistir. Sonuc olarak; T. absoluta ’nin biyolojik mucadelesinde N. tenuis ve T. evanescens’ in ayri ayri tek basina salimlarindan ziyade birlikte salimi yapildiginda umit var sonuclar elde edilmistir.
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Depolanmış Ürünlerde Zararlı Ephestia kuehniella Zeller (Lepidoptera: Pyralidae)’nın Biyolojik Mücadelesinde Yumurta Parazitoidi Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae)’in Etkinliğinin Belirlenmesi
2010Co-Authors: Sevcan OztemizAbstract:Bu arastirmada Ephestia kuehniella Zeller (Lepidoptera: Pyralidae)’nin biyolojik mucadelesinde Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae)’in parazitleme kapasitesinin belirlenmesi amaclanmistir. Bu amacla, T. evanescens’in yasinin omur boyunca parazitledigi E. kuehniella yumurta sayisi, parazitleme orani, ergin cikisi ve disi oranina etkisi belirlenmis, ayrica konukcu yumurta yasinin T.evanescens’in parazitleme kapasitesine etkisi arastirilmistir. Deneme, 26±1 oC sicaklik, % 65±10 oransal nem, 16 saat aydinlik, 8 saat karanlik uzun gun aydinlatmali iklim odasinda yurutulmustur. T. evanescens disileri bir gunluk yumurtalari en fazla oranda tercih etmislerdir. E. kuehniella yumurta yasi ilerledikce T. evanescens disisi tarafindan parazitlenen yumurta sayisi azalmistir. T. evanescens’in omru boyunca parazitledigi Ephestia kuehniella yumurtalarinin %75’ini birinci gun parazitledigi ortaya cikmistir. Parazitlenme orani altinci gunden itibaren % 50’nin altina dusmus, sekizinci gundeki parazitlenme orani birinci gundekine gore % 50 oraninda azalis ile % 34.4 olarak gerceklesmistir. Parazitoidin cikis orani % 95.06, disi orani ise % 83.77 olarak belirlenmistir. Sonuc olarak, T. evanescens’in parazitleme kapasitesinin yuksek oldugu ve E. kuehniella populasyonunu onemli olcude azaltici etkisinin oldugu, depolanmis urunlerde ozellikle un degirmenlerinde zararli olan E. kuehniella’nin biyolojik mucadelesinde kullanilabilecek potansiyele sahip oldugu bu arastirma ile ortaya cikmistir.
Abdurrahman Ayvaz - One of the best experts on this subject based on the ideXlab platform.
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soğukta depolamanin farkli konukcularda yetişen Trichogramma evanescens westwood hym Trichogrammatidae in farkli evreleri uzerine etkileri effects of cold storage on the life stages of Trichogramma evanescens westwood hym Trichogrammatidae rared on d
Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2016Co-Authors: Salih Karaborklu, Abdurrahman AyvazAbstract:Bu calismada yumurta parazitoidi Trichogramma evanescens’in yumurta, larva ve pupa evreleri cesitli konukcu [Ephestia kuehniella Zeller ve Sitotroga cerealella (Olivier)] yumurtalarinda 4°C de 10, 20, 30 ve 40 gun sureyle depolanmistir. Her bir konukcu icerisinde depolanan parazitoidlerin ergin cikisi, parazitleme performanslari ve omur uzunluklarinda depolama suresine bagli olarak onemli oranda azalma gozlenmistir. Depolama suresi cikan erginlerin cinsiyet oranlarinda onemli bir degisime neden olmamistir. Depolama suresi arttikca Sitotroga cerealella (Olivier) yumurtasinda gelisen parazitoidlerin omur uzunlugundaki azalma E. kuehniella yumurtasinda gelisenlerden cok daha fazla olmustur. In this study the eggs, larvae and pupae of the egg parasitoid Trichogramma evanescens in different host eggs [Ephestia kuehniella Zeller and Sitotroga cerealella (Olivier)] were stored as parasitized host eggs at 4°C for 10, 20, 30 and 40 days. Emergence, parasitization and longevity of the adults emerged from stored host eggs decreased depending on the storage periods. Sex rations of the adults were not effected by storage temperature and periods. The decrease of the adult parasitoid longevity emerged from S. cerealella eggs was more evident than that of E. kuehniella eggs.
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SOĞUKTA DEPOLAMANIN FARKLI KONUKÇULARDA YETİŞEN Trichogramma evanescens Westwood (HYM: TrichogrammaTIDAE)’in FARKLI EVRELERİ ÜZERİNE ETKİLERİ / EFFECTS OF COLD STORAGE ON THE LIFE STAGES OF Trichogramma evanescens Westwood (HYM: TrichogrammaTIDAE) RA
2016Co-Authors: Salih Karaborklu, Abdurrahman AyvazAbstract:Bu calismada yumurta parazitoidi Trichogramma evanescens’in yumurta, larva ve pupa evreleri cesitli konukcu [Ephestia kuehniella Zeller ve Sitotroga cerealella (Olivier)] yumurtalarinda 4°C de 10, 20, 30 ve 40 gun sureyle depolanmistir. Her bir konukcu icerisinde depolanan parazitoidlerin ergin cikisi, parazitleme performanslari ve omur uzunluklarinda depolama suresine bagli olarak onemli oranda azalma gozlenmistir. Depolama suresi cikan erginlerin cinsiyet oranlarinda onemli bir degisime neden olmamistir. Depolama suresi arttikca Sitotroga cerealella (Olivier) yumurtasinda gelisen parazitoidlerin omur uzunlugundaki azalma E. kuehniella yumurtasinda gelisenlerden cok daha fazla olmustur. In this study the eggs, larvae and pupae of the egg parasitoid Trichogramma evanescens in different host eggs [Ephestia kuehniella Zeller and Sitotroga cerealella (Olivier)] were stored as parasitized host eggs at 4°C for 10, 20, 30 and 40 days. Emergence, parasitization and longevity of the adults emerged from stored host eggs decreased depending on the storage periods. Sex rations of the adults were not effected by storage temperature and periods. The decrease of the adult parasitoid longevity emerged from S. cerealella eggs was more evident than that of E. kuehniella eggs.
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yumurta parazitoidi Trichogramma evanescens hymenoptera Trichogrammatidae in yaşam evrelerinin gamma radyasyonuna karşi duyarliliklari gamma radiation sensitivity of the life stages of the egg parasitoid Trichogramma evanescens hymenoptera trichogram
Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2016Co-Authors: Abdurrahman Ayvaz, Salih Karaborklu, Aydin ş TuncbilekAbstract:Bu calismada, gamma radyasyonunun yumurta parazitoidi Trichogramma evanescens’in yumurta, pupa ve ergin evreleri uzerine etkileri arastirilmistir. Parazitoidin yumurta evresi 0-20 Gy arasinda degisen dozlarda isinlandiginda artan doza bagli olarak pupalasma, ergin cikisi ve disi birey oraninda azalma gozlenmistir. 5 Gy’lik dozla isinlanan yumurtalardan gelisen erginlerin parazitleme oranlarinda kontrole gore onemli bir azalma gorulmemistir. Parazitoidin 1 gunluk pupalari isinlandiginda ergin cikisi, parazitleme orani ve F1 ergin cikisi bakimindan 10 Gy’e kadar onemli bir azalma gorulmemistir. Parazitoidin 6 gunluk pupalari isinlandiginda ise uygulanan tum dozlarda benzer oranlarda ergin cikisi gozlenmisken parazitleme orani artan doza bagli olarak azalmistir. Birinci nesil parazitlemesi ise tum dozlarda benzer oranda gerceklesmistir. Parazitoid erginleri 0-80 Gy arasindaki dozlarda isinlandiginda ergin cikisi, parazitleme ve F1 ergin cikisi artan doza bagli olarak azalmistir. Dusuk doz uygulanan erginler 4 Gy’lik dozda diger uygulamalara gore daha az yasamistir. In this study the the effects of gamma radiation on eggs, pupae and adult stages of the egg parasitoid Trichogramma evanescens were investigated. When the eggs were irradiated with the doses between 0-20 Gy, pupation, parasitization and percentage of female decreased depending on the increasing doses. The parasitization of the adults developed from irradiated eggs at 5 Gy was not changed when compared control. The 1-day old pupae of the parasitoid was not affected by gamma radiation with respect to adult emergence, parasitization rate and F1 emergence up to 10 Gy. While adult emergence from irradiated 6-day old pupae was not affected up to the 20 Gy dose parasitization performances of these adults decreased depending on the increasing doses. The F1 generation developed from irradiated 6-day old pupae showed similar parasitization performance when compared with control at all doses. When the adult parasitoids irradiated with the doses between 0-80 Gy parasitization, adult emergence and parasitization performance of the F1 adults decreased with increasing doses. Gamma radiation caused reduction in the longevity even at the low doses.
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YUMURTA PARAZİTOİDİ Trichogramma evanescens (HYMENOPTERA: TrichogrammaTIDAE)’ İN YAŞAM EVRELERİNİN GAMMA RADYASYONUNA KARŞI DUYARLILIKLARI / GAMMA RADIATION SENSITIVITY OF THE LIFE STAGES OF THE EGG PARASITOID Trichogramma evanescens (HYMENOPTERA: TR
2016Co-Authors: Abdurrahman Ayvaz, Salih Karaborklu, Aydin ş TuncbilekAbstract:Bu calismada, gamma radyasyonunun yumurta parazitoidi Trichogramma evanescens’in yumurta, pupa ve ergin evreleri uzerine etkileri arastirilmistir. Parazitoidin yumurta evresi 0-20 Gy arasinda degisen dozlarda isinlandiginda artan doza bagli olarak pupalasma, ergin cikisi ve disi birey oraninda azalma gozlenmistir. 5 Gy’lik dozla isinlanan yumurtalardan gelisen erginlerin parazitleme oranlarinda kontrole gore onemli bir azalma gorulmemistir. Parazitoidin 1 gunluk pupalari isinlandiginda ergin cikisi, parazitleme orani ve F1 ergin cikisi bakimindan 10 Gy’e kadar onemli bir azalma gorulmemistir. Parazitoidin 6 gunluk pupalari isinlandiginda ise uygulanan tum dozlarda benzer oranlarda ergin cikisi gozlenmisken parazitleme orani artan doza bagli olarak azalmistir. Birinci nesil parazitlemesi ise tum dozlarda benzer oranda gerceklesmistir. Parazitoid erginleri 0-80 Gy arasindaki dozlarda isinlandiginda ergin cikisi, parazitleme ve F1 ergin cikisi artan doza bagli olarak azalmistir. Dusuk doz uygulanan erginler 4 Gy’lik dozda diger uygulamalara gore daha az yasamistir. In this study the the effects of gamma radiation on eggs, pupae and adult stages of the egg parasitoid Trichogramma evanescens were investigated. When the eggs were irradiated with the doses between 0-20 Gy, pupation, parasitization and percentage of female decreased depending on the increasing doses. The parasitization of the adults developed from irradiated eggs at 5 Gy was not changed when compared control. The 1-day old pupae of the parasitoid was not affected by gamma radiation with respect to adult emergence, parasitization rate and F1 emergence up to 10 Gy. While adult emergence from irradiated 6-day old pupae was not affected up to the 20 Gy dose parasitization performances of these adults decreased depending on the increasing doses. The F1 generation developed from irradiated 6-day old pupae showed similar parasitization performance when compared with control at all doses. When the adult parasitoids irradiated with the doses between 0-80 Gy parasitization, adult emergence and parasitization performance of the F1 adults decreased with increasing doses. Gamma radiation caused reduction in the longevity even at the low doses.
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effects of bacillus thuringiensis subsp kurstaki hd1 spore crystal mixture on the adults of egg parasitoid Trichogramma evanescens hymenoptera Trichogrammatidae
Biotechnology & Biotechnological Equipment, 2015Co-Authors: Ugur Azizoglu, Semih Yilmaz, Abdurrahman Ayvaz, Salih KaraborkluAbstract:In the present study, the potential hazard of Bacillus thuringiensis (Bt) kurstaki HD1 spore-crystal mixture (spore/δ-endotoxin) on parasitization performance and longevity of female egg parasitoid Trichogramma evanescens Westwood was evaluated. For this purpose, Bt kurstaki HD1 was incubated at 30 °C in T3 medium at 200 rpm for seven days. Lyophilized spore-crystal mixture (5000 µg mL−1) was mixed with 50% honey solution and supplied to 0–24 h old T. evanescens adults as a nutrient to ensure the ingestion of the toxins by the parasitoids. The results indicated that spore-crystal mixture of Bacillus thuringiensis subsp. kurstaki (Btk) HD1 did not induce considerable decrease in parasitization performance and longevity of T. evanescens adults. Thus, it can be concluded that Btk HD1 products can safely be used together with egg parasitoid T. evanescens in integrated pest management system to compensate the deficiency of each control tactic alone.
Salih Karaborklu - One of the best experts on this subject based on the ideXlab platform.
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soğukta depolamanin farkli konukcularda yetişen Trichogramma evanescens westwood hym Trichogrammatidae in farkli evreleri uzerine etkileri effects of cold storage on the life stages of Trichogramma evanescens westwood hym Trichogrammatidae rared on d
Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2016Co-Authors: Salih Karaborklu, Abdurrahman AyvazAbstract:Bu calismada yumurta parazitoidi Trichogramma evanescens’in yumurta, larva ve pupa evreleri cesitli konukcu [Ephestia kuehniella Zeller ve Sitotroga cerealella (Olivier)] yumurtalarinda 4°C de 10, 20, 30 ve 40 gun sureyle depolanmistir. Her bir konukcu icerisinde depolanan parazitoidlerin ergin cikisi, parazitleme performanslari ve omur uzunluklarinda depolama suresine bagli olarak onemli oranda azalma gozlenmistir. Depolama suresi cikan erginlerin cinsiyet oranlarinda onemli bir degisime neden olmamistir. Depolama suresi arttikca Sitotroga cerealella (Olivier) yumurtasinda gelisen parazitoidlerin omur uzunlugundaki azalma E. kuehniella yumurtasinda gelisenlerden cok daha fazla olmustur. In this study the eggs, larvae and pupae of the egg parasitoid Trichogramma evanescens in different host eggs [Ephestia kuehniella Zeller and Sitotroga cerealella (Olivier)] were stored as parasitized host eggs at 4°C for 10, 20, 30 and 40 days. Emergence, parasitization and longevity of the adults emerged from stored host eggs decreased depending on the storage periods. Sex rations of the adults were not effected by storage temperature and periods. The decrease of the adult parasitoid longevity emerged from S. cerealella eggs was more evident than that of E. kuehniella eggs.
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SOĞUKTA DEPOLAMANIN FARKLI KONUKÇULARDA YETİŞEN Trichogramma evanescens Westwood (HYM: TrichogrammaTIDAE)’in FARKLI EVRELERİ ÜZERİNE ETKİLERİ / EFFECTS OF COLD STORAGE ON THE LIFE STAGES OF Trichogramma evanescens Westwood (HYM: TrichogrammaTIDAE) RA
2016Co-Authors: Salih Karaborklu, Abdurrahman AyvazAbstract:Bu calismada yumurta parazitoidi Trichogramma evanescens’in yumurta, larva ve pupa evreleri cesitli konukcu [Ephestia kuehniella Zeller ve Sitotroga cerealella (Olivier)] yumurtalarinda 4°C de 10, 20, 30 ve 40 gun sureyle depolanmistir. Her bir konukcu icerisinde depolanan parazitoidlerin ergin cikisi, parazitleme performanslari ve omur uzunluklarinda depolama suresine bagli olarak onemli oranda azalma gozlenmistir. Depolama suresi cikan erginlerin cinsiyet oranlarinda onemli bir degisime neden olmamistir. Depolama suresi arttikca Sitotroga cerealella (Olivier) yumurtasinda gelisen parazitoidlerin omur uzunlugundaki azalma E. kuehniella yumurtasinda gelisenlerden cok daha fazla olmustur. In this study the eggs, larvae and pupae of the egg parasitoid Trichogramma evanescens in different host eggs [Ephestia kuehniella Zeller and Sitotroga cerealella (Olivier)] were stored as parasitized host eggs at 4°C for 10, 20, 30 and 40 days. Emergence, parasitization and longevity of the adults emerged from stored host eggs decreased depending on the storage periods. Sex rations of the adults were not effected by storage temperature and periods. The decrease of the adult parasitoid longevity emerged from S. cerealella eggs was more evident than that of E. kuehniella eggs.
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yumurta parazitoidi Trichogramma evanescens hymenoptera Trichogrammatidae in yaşam evrelerinin gamma radyasyonuna karşi duyarliliklari gamma radiation sensitivity of the life stages of the egg parasitoid Trichogramma evanescens hymenoptera trichogram
Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2016Co-Authors: Abdurrahman Ayvaz, Salih Karaborklu, Aydin ş TuncbilekAbstract:Bu calismada, gamma radyasyonunun yumurta parazitoidi Trichogramma evanescens’in yumurta, pupa ve ergin evreleri uzerine etkileri arastirilmistir. Parazitoidin yumurta evresi 0-20 Gy arasinda degisen dozlarda isinlandiginda artan doza bagli olarak pupalasma, ergin cikisi ve disi birey oraninda azalma gozlenmistir. 5 Gy’lik dozla isinlanan yumurtalardan gelisen erginlerin parazitleme oranlarinda kontrole gore onemli bir azalma gorulmemistir. Parazitoidin 1 gunluk pupalari isinlandiginda ergin cikisi, parazitleme orani ve F1 ergin cikisi bakimindan 10 Gy’e kadar onemli bir azalma gorulmemistir. Parazitoidin 6 gunluk pupalari isinlandiginda ise uygulanan tum dozlarda benzer oranlarda ergin cikisi gozlenmisken parazitleme orani artan doza bagli olarak azalmistir. Birinci nesil parazitlemesi ise tum dozlarda benzer oranda gerceklesmistir. Parazitoid erginleri 0-80 Gy arasindaki dozlarda isinlandiginda ergin cikisi, parazitleme ve F1 ergin cikisi artan doza bagli olarak azalmistir. Dusuk doz uygulanan erginler 4 Gy’lik dozda diger uygulamalara gore daha az yasamistir. In this study the the effects of gamma radiation on eggs, pupae and adult stages of the egg parasitoid Trichogramma evanescens were investigated. When the eggs were irradiated with the doses between 0-20 Gy, pupation, parasitization and percentage of female decreased depending on the increasing doses. The parasitization of the adults developed from irradiated eggs at 5 Gy was not changed when compared control. The 1-day old pupae of the parasitoid was not affected by gamma radiation with respect to adult emergence, parasitization rate and F1 emergence up to 10 Gy. While adult emergence from irradiated 6-day old pupae was not affected up to the 20 Gy dose parasitization performances of these adults decreased depending on the increasing doses. The F1 generation developed from irradiated 6-day old pupae showed similar parasitization performance when compared with control at all doses. When the adult parasitoids irradiated with the doses between 0-80 Gy parasitization, adult emergence and parasitization performance of the F1 adults decreased with increasing doses. Gamma radiation caused reduction in the longevity even at the low doses.
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YUMURTA PARAZİTOİDİ Trichogramma evanescens (HYMENOPTERA: TrichogrammaTIDAE)’ İN YAŞAM EVRELERİNİN GAMMA RADYASYONUNA KARŞI DUYARLILIKLARI / GAMMA RADIATION SENSITIVITY OF THE LIFE STAGES OF THE EGG PARASITOID Trichogramma evanescens (HYMENOPTERA: TR
2016Co-Authors: Abdurrahman Ayvaz, Salih Karaborklu, Aydin ş TuncbilekAbstract:Bu calismada, gamma radyasyonunun yumurta parazitoidi Trichogramma evanescens’in yumurta, pupa ve ergin evreleri uzerine etkileri arastirilmistir. Parazitoidin yumurta evresi 0-20 Gy arasinda degisen dozlarda isinlandiginda artan doza bagli olarak pupalasma, ergin cikisi ve disi birey oraninda azalma gozlenmistir. 5 Gy’lik dozla isinlanan yumurtalardan gelisen erginlerin parazitleme oranlarinda kontrole gore onemli bir azalma gorulmemistir. Parazitoidin 1 gunluk pupalari isinlandiginda ergin cikisi, parazitleme orani ve F1 ergin cikisi bakimindan 10 Gy’e kadar onemli bir azalma gorulmemistir. Parazitoidin 6 gunluk pupalari isinlandiginda ise uygulanan tum dozlarda benzer oranlarda ergin cikisi gozlenmisken parazitleme orani artan doza bagli olarak azalmistir. Birinci nesil parazitlemesi ise tum dozlarda benzer oranda gerceklesmistir. Parazitoid erginleri 0-80 Gy arasindaki dozlarda isinlandiginda ergin cikisi, parazitleme ve F1 ergin cikisi artan doza bagli olarak azalmistir. Dusuk doz uygulanan erginler 4 Gy’lik dozda diger uygulamalara gore daha az yasamistir. In this study the the effects of gamma radiation on eggs, pupae and adult stages of the egg parasitoid Trichogramma evanescens were investigated. When the eggs were irradiated with the doses between 0-20 Gy, pupation, parasitization and percentage of female decreased depending on the increasing doses. The parasitization of the adults developed from irradiated eggs at 5 Gy was not changed when compared control. The 1-day old pupae of the parasitoid was not affected by gamma radiation with respect to adult emergence, parasitization rate and F1 emergence up to 10 Gy. While adult emergence from irradiated 6-day old pupae was not affected up to the 20 Gy dose parasitization performances of these adults decreased depending on the increasing doses. The F1 generation developed from irradiated 6-day old pupae showed similar parasitization performance when compared with control at all doses. When the adult parasitoids irradiated with the doses between 0-80 Gy parasitization, adult emergence and parasitization performance of the F1 adults decreased with increasing doses. Gamma radiation caused reduction in the longevity even at the low doses.
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effects of bacillus thuringiensis subsp kurstaki hd1 spore crystal mixture on the adults of egg parasitoid Trichogramma evanescens hymenoptera Trichogrammatidae
Biotechnology & Biotechnological Equipment, 2015Co-Authors: Ugur Azizoglu, Semih Yilmaz, Abdurrahman Ayvaz, Salih KaraborkluAbstract:In the present study, the potential hazard of Bacillus thuringiensis (Bt) kurstaki HD1 spore-crystal mixture (spore/δ-endotoxin) on parasitization performance and longevity of female egg parasitoid Trichogramma evanescens Westwood was evaluated. For this purpose, Bt kurstaki HD1 was incubated at 30 °C in T3 medium at 200 rpm for seven days. Lyophilized spore-crystal mixture (5000 µg mL−1) was mixed with 50% honey solution and supplied to 0–24 h old T. evanescens adults as a nutrient to ensure the ingestion of the toxins by the parasitoids. The results indicated that spore-crystal mixture of Bacillus thuringiensis subsp. kurstaki (Btk) HD1 did not induce considerable decrease in parasitization performance and longevity of T. evanescens adults. Thus, it can be concluded that Btk HD1 products can safely be used together with egg parasitoid T. evanescens in integrated pest management system to compensate the deficiency of each control tactic alone.
Stefan Fischer - One of the best experts on this subject based on the ideXlab platform.
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novel type of sub retinal pigment shield in the miniaturized compound eye of Trichogramma evanescens
The Journal of Comparative Neurology, 2020Co-Authors: Tobias Mohr, Ian A Meinertzhagen, Stefan FischerAbstract:Pigment granules, found in different cell types of the retina in insect compound eyes, fulfill important functions. They isolate the individual ommatidia from stray light, regulate the angular sensitivity, and restrict the light that reaches the photoreceptor according to ambient light intensities. Descriptions of pigment cells within the retina are included in ultrastructural eye descriptions, but knowledge of pigment cell types beneath the retina and basal matrix (BM) are relatively limited in insects. In the miniaturized parasitoid wasp Trichogramma evanescens Westwood 1833, a sub-retinal pigment shield is formed by pigment-bearing cells, which appear in two-dimensional TEM sections to form a separate population beneath the BM. By using three-dimensional reconstructions of serial-section transmission electron microscopy, it was possible to reveal that the sub-retinal pigment shield of T. evanescens is not formed by a separate cell type, but by extensions of the lateral rim pigment cells that penetrate gaps in the BM. The reconstruction is supported by evidence from a statistical analysis of pigment granule volumes of all pigment bearing cell types in the retina and rim region. The study reveals the first known case of the participation of lateral rim cells in a sub-retinal pigment shield in an insect eye. As neither pigmented extensions of secondary pigment cells, nor pigment granules in the extensions of the cone cell projections are present above the BM in T. evanescens, the sub-retinal extensions of the lateral rim cells can be seen as a functional adaptation to miniaturization in order to maintain a proximal shielding function.
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how small can small be the compound eye of the parasitoid wasp Trichogramma evanescens westwood 1833 hymenoptera hexapoda an insect of 0 3 to 0 4 mm total body size
Visual Neuroscience, 2011Co-Authors: Stefan Fischer, Carsten Muller, Benno V MeyerrochowAbstract:: With a body length of only 0.3-0.4 mm, the parasitoid wasp Trichogramma evanescens (Westwood) is one of the smallest insects known. Yet, despite its diminutive size, it possesses compound eyes that are of oval shapes, measuring across their long axes in dorsoventral direction 63.39 and 71.11 μm in males and females, respectively. The corresponding facet diameters are 5.90 μm for males and 6.39 μm for females. Owing to the small radii of curvature of the eyes in males (34.59 μm) and females (42.82 μm), individual ommatidia are short with respective lengths of 24.29 and 34.97 μm. The eyes are of the apposition kind, and each ommatidium possesses four cone cells of the eucone type and a centrally fused rhabdom, which throughout its length is formed by no more than eight retinula cells. A ninth cell occupies the place of the eighth retinula cell in the distal third of the rhabdom. The cone is shielded by two primary and six secondary pigment cells, all with no apparent extensions to the basement membrane, unlike the case in larger hymenopterans. The regular and dense packing of the rhabdoms reflects an effective use of space. Calculations on the optics of the eyes of Trichogramma suggest that the eyes need not be diffraction limited, provided they use mostly shorter wavelengths, that is, UV light. Publications on the visual behavior of these wasps confirm Trichogramma's sensitivity to UV radiation. On the basis of our findings, some general functional conclusions for very small compound eyes are formulated.
Serkan Pehlivan - One of the best experts on this subject based on the ideXlab platform.
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first record and parasitism of egg parasitoid Trichogramma evanescens westwood 1833 hymenoptera Trichogrammatidae on eggs of chilo partellus swinhoe 1885 lepidoptera crambidae in turkey
Turkish journal of entomology, 2019Co-Authors: Tange Denis Achiri, Victor Fursov, Ekrem Atakan, Serkan PehlivanAbstract:Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), su an dunyanin bircok bolgesine yayilmis, orijini Hindistan Yarimadasi ve Guney ve Dogu Afrika olan oldukca zararli bir misir sap kurdudur. Turkiye’de ilk kez 2014 yilinda saptanmistir. Bu zararlinin kontrolunde genellikle insektisit kullanilmaktir. Surekli insektisit kullaniminin olumsuz etkileriyle ilgili endiseler daha cevre dostu ve dogal kontrol yontemlerinin arastirilmasini gerektirmistir. Bu calisma ile C. partellus ’un mevcut yerli parazitoitlerinin varligi ve parazitleme oranlari arastirilmistir. 2018 yilinda Cukurova Universitesi, Bitki Koruma Bolumu, Arastirma ve Uygulama Alani (39o01’50.5"N, 35o21’06.7"E)’nda birinci ve ikinci urun olarak yetistirilen misir tarlalarinda haftada bir defa orneklemeler yapilmis ve parazitlenmis yumurtalar kaydedilmistir. Morfolojik karakterler incelenerek Trichogramma evanescens Westwood, 1833 (Hymenoptera: Trichogrammatidae) olarak tanimlanan yumurta parazitoitinin, 2018 Agustos- Eylul aylarinda ilk kez misirda C. partellus ’un parazitoiti olarak kaydedildigi ve 16 Agustos’ta parazitlenme oraninin %100 oldugu belirlenmistir. Trichogramma evanescens ’in gelecekte C. partellus ’un biyolojik mucadele programlarinda kullanilabilecegi dusunulmektedir .
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intraguild predation of orius niger hemiptera anthocoridae on Trichogramma evanescens hymenoptera Trichogrammatidae
European Journal of Endocrinology, 2017Co-Authors: Serkan Pehlivan, Alican Kurtulus, Tugcan Alinc, Ekrem AtakanAbstract:Intraguild predation of a generalist predator, Orius niger Wolff (Hemiptera: Anthocoridae) on Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae), was determined in choice and no-choice experiments using a factitious host, Ephestia kuehniella Zeller (Lepidoptera: Pyralidae), under laboratory conditions. Choice and no-choice experiments were conducted in order to assess the level of intraguild predation of O. niger on E. kuehniella eggs parasitized by T. evanescens. In no-choice experiments, approximately 50 sterile (1) non-parasitized, (2) 3-day-old parasitized, or (3) 6-day-old parasitized E. kuehniella eggs were offered to 24-h-old females of O. niger in glass tubes. In choice experiments approximately 25 eggs of two of the three groups mentioned above were offered to 24-h-old O. niger females. In both choice and no-choice experiments, O. niger consumed more non-parasitized eggs of E. kuehniella. However, intraguild predation occurred, especially of 3-day-old parasitoids, but very few 6-day-old parasitized eggs were consumed. The preference index was nearly 1 indicating O. niger preferred mainly non-parasitized E. kuehniella eggs. A lower level of intraguild predation is expected under field conditions but needs to be investigated using further experiments.
