Patogenicidade de isolados de Metarhizium anisopliae (Metsch.) Sorokin e de Beauveria bassiana (Bals.) Vuillemin a Scaptocoris carvalhoi Becker (Hemiptera, Cydnidae)

Xavier, Luciane Modenez Saldivar; Ávila, Crébio José

doi:10.1590/s0085-56262006000400016

Cited by 5 publications

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References 12 publications

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“…In this context, biological control with the use of entomopathogenic fungi M. anisopliae (Metschnikoff) (Deuteromycetes) may be a viable alternative for the management of N. viridula and D. melacanthus in wheat. Several studies have shown that the fungus presented high pathogenicity to different species of bugs (SOSA-GÓMEZ; MOSCARDI, 1998;MARTINS et al, 2004;XAVIER;ÁVILA, 2006;RAMPELOTTI et al, 2007), especially to the sugarcane leafhopper, Mahanarva posticata (Stal, 1855) (Hemiptera: Cercopidae) (LOUREIRO et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Pathogenicity of Metarhizium anisopliae isolates on Nezara viridula and Dichelops melacanthus in wheat crop

et al. 2017

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Bugs such as Nezara viridula (Linnaeus) and Dichelops melacanthus (Dallas) are considered the main insect pests of wheat crop in Brazil. The use of the entomopathogenic fungus Metarhizium anisopliae (Metschnikoff) may be an alternative for the management of these insects in the crop. The objective of this work was to verify the pathogenicity of different isolates of M. anisopliae on adults of N. viridula and D. melacanthus under laboratory and greenhouse conditions. In the laboratory, isolates 05RA, 11RA, 08RA and 02RA were obtained from N. viridula and D. melacanthus infested with M. anisopliae. Also, a high pathogenicity (100% of mortality) of both species was recorded in a bioassay of the topical application 8 Days After Application (DAA). However, compared to the other isolates, the 08RA isolate showed the highest pathogenicity in a shorter time interval for N. viridula (Mean Time “MT” = 2.8 days) and D. melacanthus (MT = 4.0 days). Under greenhouse conditions, the 08RA isolate provided a mortality of 44.9% (N. viridula) and 35.7% (D. melacanthus) in the same evaluation period. However, at 14 DAA, the mortality was 100% for both species, with the MT values of N. viridula and D. melacanthus being obtained at 8 days and 10 days, respectively. The fungus M. anisopliae is a promising alternative for the control of adult N. viridula and D. melacanthus in wheat crop.

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