Effectiveness of four Turkish entomopathogenic nematode isolates against Bactrocera oleae (Diptera: Tephritidae) pupae at different temperatures

Öz

Türkiye, is the country of origin of the olive tree and is among the world’s leading olive producers. Most of the olive production in Türkiye is concentrated in Izmir, Aydın, Çanakkale, Balıkesir, Muğla and Bursa Provinces. Bactrocera oleae (Diptera: Tephritidae), being one of the main pests of olive trees, is an important problem in olive cultivation in Türkiye. The efficacy of four Turkish populations of entomopathogenic nematodes against B. oleae pupae was determined under laboratory conditions. They were Steinernema feltiae/12, S. carpocapsae/1133, Heterorhabditis bacteriophora/70, H. bacteriophora/91, which were collected in different regions of Türkiye during our earlier studies. They were tested against the pest by using a single dose at 5 different temperatures (10, 15, 20, 25 and 30 °C). The highest infection rate was observed forH. bacteriophora/91 isolate at 25 °C, and the lowest infection rate was observed for S. feltiae/12 isolate at 10 °C.

Anahtar Kelimeler

• Bactrocera oleae
• Steinernema feltiae
• Steinernema carpocapsae
• Heterorhabditis bacteriophora
• biological control

Dört yerel entomopatojen nematod türünün farklı sıcaklıklarda Bactrocera oleae (Diptera: Tephritidae) pupaları üzerindeki etkinliği

Öz

Zeytinin anavatanı olan Türkiye, dünyanın önde gelen zeytin üreticilerinden biridir. Türkiye’de en fazla zeytin üretimi yapan iller arasında İzmir, Aydın, Çanakkale, Balıkesir, Muğla ve Bursa yer almaktadır. Zeytinin ana zararlısı olan Bactrocera oleae (Diptera: Tephritidae), ülkemiz zeytin yetiştiriciliğinde önemli bir sorundur. Daha önceki çalışmalarla ülkemizde tespit edilmiş 4 yerel entomopatojen nematod türünün (Steinernema feltiae/12, Steinernema carpocapsae/1133, Heterorhabditis bacteriophora/70, Heterorhabditis bacteriophora/91), tek doz ve 5 farklı sıcaklıkta (10, 15, 20, 25 ve 30 oC) laboratuvar koşullarında B. oleae pupaları üzerinde meydana getirdikleri infeksiyon oranları belirlenmiştir. Elde edilen sonuçlara göre en yüksek infeksiyon oranı 25 °C’de Heterorhabditis bacteriophora/91 izolatında, en düşük infeksiyon oranı 10 °C’de Steinernema feltiae/12 izolatında gözlemlenmiştir.

Anahtar Kelimeler

• Bactrocera oleae
• Steinernema feltiae
• Steinernema carpocapsae
• Heterorhabditis bacteriophora
• biyolojik mücadele

Kaynakça

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