Antalya İli topraklarından Galleria mellonella kullanılarak izole edilen potansiyel entomopatojen fungus izolatlarının Myzus persicae’e etkilerinin belirlenmesi

Yeşil şeftali afidi, Myzus persicae Sulzer (Hemiptera: Aphididae), Antalya İli’nde seralarda biberlerin önemli bir zararlısıdır. Bu çalışmada, yerel (Antalya İli’ndeki) entomopatojen fungusların belirlenmesi ve M. persicae’ye karşı etkinliklerinin araştırılması amaçlanmıştır. Bu amaçla, Antalya İli’nde tarımsal faaliyetlerin yoğun olarak yapıldığı ilçelerden 42 toprak örneği alınmıştır. Yapılan izolasyonlar sonucunda toplamda 34 adet entomopatojen fungus izolatı elde edilmiştir. Bunlar; 11 Beauveria bassiana (Bals.) Vuill., 5 adet A. flavus (Linn), 6 adet Fusarium spp., 3 adet Metarhizum spp. ve 9 adet Penicillium spp.’dir. Patojenite testi için her türden üçer adet izolat M. persicae’ye karşı test edilmiştir. Beauveria bassiana, M. persicae’nin 4-5 günlük erginlerinde ortalama %83 ölüme neden olurken, Aspergillus flavus %47, Fusarium spp. %2, Metarhizum spp. %68 ve Penicillium spp. %37 ölüme neden olmuştur. Etki oranları yüksek olan entomopatojen fungus izolatlarının tarımsal zararlılar ile mücadele de kullanılma potansiyellerinin olduğu düşünülmektedir.

Anahtar Kelimeler:

Beauveria bassiana, Aspergillus flavus, entomopatojen fungus, Fusarium spp, Metarhizum spp.

Isolation of potentially entomopathogenic fungi from soil samples collected in Antalya Province, Turkey by using Galleria mellonella (L.) and determination of their pathogenicity against Myzus persicae, the green peach aphid

The green peach aphid, Myzus persicae Sulzer (Hemiptera: Aphididae), is an important pest of peppers in greenhouses in Antalya Province, Turkey. The aim of this study was to determine the efficacy of entomopathogenic fungi isolated from Galleria melonella baits placed in soil in Antalya Province against M. persicae. A total of 34 isolates of potentially entomopathogenic fungi were collected and identified, namely 11 Beauveria bassiana (Bals.) Vuill., 5 Aspergillus flavus (Linn), 6 Fusarium spp., 3 Metarhizum spp. and 9 Penicillium spp. In each pathogenicity test, three isolates of each fungal species were tested against M. persicae. Beauveria bassiana caused mean mortality of 83% in 4 and 5 day old adults, while A. flavus, Fusarium spp., Metarhizum spp. and Penicillium spp. caused 47%, 52%, 68% and 37% mortality, respectively. Overall, the results of this study suggest that some of these indigenous Turkish entomopathogenic fungi have the potential to be used in the control of M. persicae.

Keywords:

Aspergillus flavus, Beauveria bassiana, entomopathogenic fungi, Fusarium spp, Metarhizum spp,

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