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Virulence and horizontal transmission of Beauveria pseudobassiana S A Rehner Humber on Ips sexdentatus and Ips typographus Coleoptera Curculionidae        
Yazarlar
Seda Kocaçevik
Prof. Dr. Ali SEVİM
Ahi Evran Üniversitesi, Türkiye
Mahmut Eroğlu
Karadeniz Teknik Üniversitesi, Türkiye
Zihni Demirbağ
Karadeniz Teknik Üniversitesi, Türkiye
İsmail Demir
Karadeniz Teknik Üniversitesi, Türkiye
Özet
Ips sexdentatus (Boerner) and I. typographus (Linnaeus) (Coleoptera: Curculionidae) are considered to be important destructive pests of coniferous forests in Europe and Asia. In this study, the efficacy of Beauveria pseudobassiana strain ARSEF 9271 isolated from Dendroctonus micans (Kugelann) (Coleoptera: Curculionidae) was evaluated against I. sexdentatus and I. typographus adults. Insects were treated with different conidial concentrations of the fungus to determine the virulence. A conidial suspension of 1 × 108 conidia mL 1 caused 100% mortality in both I. sexdentatus and I. typographus within 5 and 7 days, respectively. Additionally, 100% mycosis was obtained in the concentration-response experiments for both insects. LC50 values of the fungus were calculated as 3.94 × 104 conidia mL 1 and 1.32 × 104 conidia mL 1 for I. sexdentatus and I. typographus, respectively. I. sexdentatus and I. typographus adults were also inoculated with a conidial suspension of 1 × 106 conidia mL 1 at inoculation rates of 0% (control), 25%, 50%, 75%, and 100% to determine the horizontal transmission of the fungus. Mortality values from horizontal transmission experiments were determined as 100% at all rates after 15 days at 20 °C under laboratory conditions. Our results indicate that B. pseudobassiana ARSEF 9271 is a promising microbial control agent against the tested Ips species and can horizontally spread among a population of both I. sexdentatus and I. typographus.
Anahtar Kelimeler
Ips sexdentatus, Ips typographus, Beauveria pseudobassiana, virulence, horizontal transmission
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Turkish Journal of Agriculture and Forestry
Dergi ISSN 1300-011X
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 06-2016
Cilt No 40
Sayfalar 241 / 248
Doi Numarası 10.3906/tar-1504-64