Leptoglossus occidentalis Heidemann, 1910 (Hemiptera: Coreidae) in Türkiye: Its distribution, life cycle, and fungal associations

Öz

In this study, the distribution, life cycle and associations with fungi of the alien invasive species Leptoglossus occidentalis Heidemann, 1910 (Hemiptera: Coreidae) in Türkiye were investigated. During the study, conducted between 2019 and 2021, the pest was found to have spread across 35 provinces in Türkiye. The biological data obtained in the study were divided into ecologically similar sub-regions (Ankara-Çankırı-Kırşehir, Artvin, Isparta-Burdur, Izmir-Aydın-Manisa-Muğla-Antalya) in order to reveal the life cycle of the species. Additionally, host plant and insect samples were examined for the presence of Diplodia sapinea (Fr.) Fuckel (pine shoot blight agent) and entomopathogenic fungi species through morphological and molecular identification methods. Consequently, it was found that Leptoglossus occidentalis has two generations in Türkiye. The timing of the first flight was in early May-mid June and the second generation was from mid-July to late August. Although Diplodia sapinea was detected in some of the sampled host plant tissues, it could not be isolated from Leptoglossus occidentalis individuals. Accordingly, it did not find any evidence that Leptoglossus occidentalis vectors Diplodia sapinea although the insect and the fungus cooccurs in sampling areas. Although it was detected 25 fungal species isolated from Leptoglossus occidentalis adults, none of them were entomopathogenic fungal species. It has been revealed that the pest has spread almost all over Türkiye and has become an important risk factor affecting seed yield and quality in coniferous species.

Anahtar Kelimeler

• Western conifer seed bug
• alien invasive species
• biology
• Diplodia sapinea

Türkiye’de Leptoglossus occidentalis Heidemann, 1910 (Hemiptera: Coreidae): Yayılışı, biyolojisi ve funguslarla ilişkisi

Öz

Bu çalışmada yabancı istilacı bir tür olan Leptoglossus occidentalis Heidemann, 1910 (Hemiptera: Coreidae)’in Türkiye’deki yayılışı, biyolojisi ve funguslarla ilişkisi araştırılmıştır. 2019-2021 yılları arasında yürütülen bu çalışma boyunca 35 ilde zararlının yayılışı tespit edilmiştir. Çalışmada elde edilen biyolojik veriler, yoğun olarak örnekleme yapılan yerlerde ve ekolojik olarak benzer alt bölgelere (Ankara-Çankırı-Kırşehir, Artvin, Isparta-Burdur, İzmir-Aydın-Manisa-Muğla-Antalya) ayrılarak türün biyolojisi ortaya konulmuştur. Ayrıca, konukçu bitki ve böcek örnekleri Diplodia sapinea (Fr.) Fuckel (çam sürgün yanıklığı etmeni) ve entomopatojenik fungus türlerinin varlığı açısından morfolojik ve moleküler tanımlama yöntemleriyle incelenmiştir. Sonuç olarak Türkiye’de türün iki generasyona sahip olduğu belirlenmiştir. Birinci uçma zamanı mayıs başı-haziran ortası, ikinci generasyonun ise temmuz ortasından ağustos sonuna kadar olduğu tespit edilmiştir. Örneklenen bitki dokularının bazılarında D. sapinea tespit edilmiş olmakla birlikte, Leptoglossus occidentalis’ten izole edilememiştir. Buna göre, örnekleme alanlarında böcek ve fungus birlikte bulunmasına rağmen Leptoglossus occidentalis’in Diplodia sapinea’nın vektörü olduğuna dair herhangi bir kanıt bulunmamıştır. Leptoglossus occidentalis’ten izole edilen 25 mantar türü tespit edilmesine rağmen, tamamının entomopatojen fungus olmadığı belirlenmiştir. Zararlının Türkiye’nin hemen hemen tamamına yayıldığı ve ibreli türlerde tohum verimi ve kalitesi üzerinde önemli bir risk etmeni haline geldiği ortaya konulmuştur.

Anahtar Kelimeler

• Çam kozalak emici böceği
• yabancı istilacı tür
• yaşam döngüsü
• Diplodia sapinea
• Türkiye

Kaynakça

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