Pathogenicity of Lecanicillium longisporum (Ascomycota: Hypocreomycetidae) on the aphid Cinara pini (Hemiptera: Lachnidae) in laboratory conditions

Amir Nazemi, Gholamhossein Moravvej, Javad Karimi, Reza Talaei-Hassanlouei
2014 J. Crop Prot   unpublished
The aphid species, Cinara pini (Linnaeus, 1758) reported in our previous work as a new aphid on pinus trees for Iran, was described using the classic method and through analysis of COI gene sequence. In the next step, we addressed the efficiency of the entomopathogenic fungus, Lecanicillium longisporum (Zimm.) Zare and Gams strain LRC 190, on the aphid. The fungus was administered to the second instar nymphs and adults using topical application procedure. The results indicated that the
more » ... hogen caused 90% mortality in adults over seven days at a concentration of 10 8 spores/ml, while the same control level was achieved for nymphs by 8 × 10 7 spores/ml. The LC 50 values were obtained as 1.2 × 10 6 and 6.9 × 10 5 spores/ml for adults and nymphs, respectively. The present study suggests that the entomopathogenic fungus, L. longisporum could be considered as a potential candidate in biocontrol programs of C. pini. This is the first report on the pathogenicity of L. longisporum on C. pini.
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