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Eurygaster integriceps Put. yumurtalarının Trissolcus semistriatus Nees tarafından parazitlenmesi üzerine bazı bitkilerin etkileri

EFFECTS OF SOME PLANTS ON PARASITIZATION OF Eurygaster integriceps EGGS BY Trissolcus semistriatus

Journal Name:

  • Trakya Üniversitesi Fen Bilimleri Dergisi

Publication Year:

  • 2005

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The egg parasitoid Trissolcus semistriatus Nees is one of the natural enemies of the sunn pest, Eurygaster integriceps Put., which is one of the most destructive pests of wheat in Turkey. This research was conducted to determine whether some plant species have an effect on the parasitism of T. semistriatus on E. integriceps eggs in the laboratory at 26 oC, 60% relative humidity and 16:8 photoperiod conditions. Wheat (Triticum vulgare), cow cockle (Vaccaria pyramidata var. grandiflora), bifora (Bifora radians), common vetch (Vicia sativa) and turnipweed (Rapistrum rugosum) were tested, because these plants were common in or near the cereal fields in Tekirdag and also hosts of some pentatomids which are secondary host of egg parasitoids. The parasitism rate of T. semistriatus on E. integriceps eggs was investigated in the presence and absence of plants. The highest parasitism rate was obtained from common vetch as 94.9 % while the lowest was 68.9 % on cow cockle and also ratio of emergence was lowest in cow cockle as 89.9 %. The presence of plants significantly influenced parasitism rate and adult emergence while development period of males and females were not affected from plants, for this reason it was though several plants appear to be slightly repellant.
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Abstract (Original Language): 
Yumurta parazitoiti Trissolcus semistriatus Nees, Türkiye’ de buğdayın en önemli zararlılarından biri olan Süne Eurygaster integriceps Put.’ in doğal düşmanlarından birisidir. Bu deneme bazı bitkilerin T. semistriatus’ un E. integriceps yumurtalarını parazitlemesi üzerine bir etkisinin olup olmadığını saptamak için 26 oC sıcaklık, % 60 orantılı nem ve 16:8 fotoperiyot koşullarında yürütülmüştür. Buğday (Triticum vulgare), arapbaklası (Vaccaria pyramidata var. grandiflora), kokarot (Bifora radians), macar fiği (Vicia sativa) ve küçük turp (Rapistrum rugosum) test edilmiştir, çünkü bu bitkiler Tekirdağ’ da hububat tarlalarında veya civarında bulunan ve yumurta parazitoitlerinin sekonder konukçusu bazı Pentatomidlerin de konukçularıdır. Bitkilerin bulunduğu veya bulunmadığı ortamda E. integriceps yumurtaları üzerinde T. semistriatus’ un parazitleme oranı araştırılmıştır. En yüksek parazitlenme oranı % 95.9 ile adi fiğde,en düşük oran ise % 68.9 ile arap baklasında tespit edilmiştir ve aynı zamanda ergin çıkış oranı % 89.9 ile en düşük arap baklasında bulunmuştur. Bitkinin varlığı belirgin biçimde parazitleme oranını ve ergin çıkış oranını etkilemesine rağmen erkek ve dişilerin gelişme periyotları bitkilerden etkilenmemiştir. Bu nedenle bazı bitkilerin repellent etkiye sahip oldukları düşünülmektedir.
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