Fındık Yeşil Kokarcası [Palomena prasina L. (Hemiptera: Pentatomidae)]’nın Yumurta Paket Sayısı ve Üreme Kabiliyeti

Öz

Bu çalışma, fındık yeşil kokarcası (FYK) Palomena prasina L. (Hemiptera: Pentatomidae)’nın kışlamış erginlerinin fındıkta kafeslere alınarak üreme kabiliyetini, yumurta bırakma ritmini ve yumurta paket sayısındaki değişimlerini belirlemek amacıyla yapılmıştır. FYK'nın kışlayan erginleri bahçe içerisinde seçilmiş dallarda kafeslere alınmış olup, her kafese birer çift kışlamış ergin yerleştirilerek çalışma 20 tekerrürlü olarak yürütülmüştür. Nisan-Haziran (18 Nisan-22 Haziran) aylarında günlük gözlemler yapılmış ve zararlının arazi koşullarında fındık meyveleri ile beslenmesi sonucunda dişi başına 94.88 yumurta bıraktığı tespit edilmiştir. Dişilerde yumurta bırakma süresi ortalama 32 gün olarak bulunmuştur. Dişi başına düşen ortalama yumurtlama sayısı 4.38 olup, FYK'nın Nisan ayının son haftasından Haziran ayının üçüncü haftasına kadar yumurta bıraktığı tespit edilmiştir. Her yumurtlama için gereken süre değişkenlik göstermekte olup, ortalama süre minimum 5 gün, maksimum 11.47 gün olarak bulunmuştur. Son yumurta bırakma ve ölüm arasında geçen süre ortalama 12.25 gün olarak bulunurken, kışlayan dişilerde ölümlerin ortalama 54.3 günde gerçekleştiği tespit edilmiştir. Zararlının kafes koşullarında bıraktığı 79 adet yumurta paketinin çoğunun 28’li ve 14’lü paketler olduğu ve böceğin bıraktığı yumurta paketlerinde ortalama 21.62 adet yumurta olduğu tespit edilmiştir. Sonuç olarak, zararlının üreme davranışlarının belirlenmesi, yaşam tablolarının, popülasyon modellerinin ve biyolojik mücadele önlemlerinin geliştirilmesi gibi biyolojik araştırmalara katkı sağlayacaktır.

Anahtar Kelimeler

• Palomena prasina
• Üreme kabiliyeti
• Yumurta paket sayısı
• Yumurtlama periyodu

Fecundity and Clutch Size of Green Shield Bug [Palomena prasina L. (Hemiptera: Pentatomidae)]

Öz

This study was conducted to determine the fecundity, oviposition rhythm and clutch number variations of overwintering adult green shield bug (GSB) Palomena prasina (Hemiptera: Pentatomidae) in cages in hazelnut. The adults of GSB collected from hazelnut orchards were taken into cages on selected branches, one pair of overwintering adults were placed in each cage and the study was carried out with 20 repetitions. Daily observations were made during April-June (April 18-June 22) and it was found that the pest laid 94.88 eggs per female as a result of feeding on hazelnut fruits under field conditions. Oviposition period of females was found as 32 days on average. The average number of egg clutches laid per female is 4.38 and it was found that GSB laid eggs from the last week of April until the third week of June. The time required for each oviposition was varied and the average time was found as minimum 5 days and maximum 11.47 days. While postoviposition period was found as 12.25 days on average, death was found to occur on day 54.3 on average in overwintering females. It was found that most of the 79 clutches laid by the pest under cage conditions were included 28 and 14 eggs and there were an average of 21.62 eggs in the clutches laid by the bug. As a result, the determination of reproductive behaviours of the pest will also contribute to biological researches aiming to develop life tables, population models and biological control measures.

Anahtar Kelimeler

• Palomena prasina
• Fecundity
• Clutch size
• Oviposition period

Kaynakça

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