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Potential of Metarhizium anisopliae (Metsch.) Sorokin (Ascomycetes, hypocreales) in the control of Bonagota salubricola (Meyrick) (Lepidoptera, Tortricidae) and its compatibility with chemical insecticides / Potencialidade de Metarhizium anisopliae (Metsch.) Sorokin (Ascomycetes, Hypocreales) no controle de Bonagota salubricola (Meyrick) (Lepidoptera, Tortricidae) e sua compatibilidade com inseticidas químicos
Anhalt, FA; Azevedo, JL; Sugayama, RL; Specht, A; Barros, NM.
  • Anhalt, FA; s.af
  • Azevedo, JL; s.af
  • Sugayama, RL; s.af
  • Specht, A; s.af
  • Barros, NM; s.af
Braz. j. biol ; 70(4): 931-936, Nov. 2010. graf, tab
Article in English | VETINDEX | ID: lil-569154
ABSTRACT
Several insects are harmful to apples grown in Brazil, especially the leafroller Bonagota salubricola (Lepidoptera, Tortricidae), usually controlled with chemical insecticides. The purpose of the present study was to investigate the use of Metarhizium anisopliae strains in the control of the apple leafroller, by assessing their virulence to B. salubricola larvae in bioassays with suspensions of 2 x 10(5) to 2 x 10(9) conidia/mL as well as their relationship with protease expression. The most effective strain underwent a compatibility test with chemical insecticides. The M. anisopliae E6 strain showed a good performance, with up to 88 percent mortality and a LT50 of 1.66 days. The virulence was positively correlated with a higher enzymatic activity. The E6 strain was compatible with tebufenozide, evidencing its potential to control B. salubricola.
RESUMO
Diversos insetos são nocivos à macieira no Brasil, destacando-se a lagarta-enroladeira Bonagota salubricola (Lepidoptera Tortricidae), controlada com inseticidas químicos. Este trabalho objetivou avaliar linhagens de Metarhizium anisopliae passíveis de serem utilizadas no controle desta praga, determinando-se a virulência sobre larvas de B. salubricola em bioensaios com suspensões de 2 x 10(5) a 2 x 10(9) conídios/mL considerando-se mortalidade larval e pupal, bem como a sua relação com a expressão de proteases. A linhagem mais efetiva foi submetida a teste de compatibilidade com inseticidas químicos. A linhagem E6 de M. anisopliae destacou-se por proporcionar mortalidade de 88 por cento com TL50 de 1,66 dias; tal virulência relacionou-se positivamente com maior produção enzimática. Esta linhagem foi compatível com tebufenozide, evidenciado seu potencial no controle de B. salubricola.
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Full text: Available Main subject: Ascomycota / Pest Control, Biological / Metarhizium / Insecticides / Lepidoptera Limits: Animals Language: English Journal: Braz. j. biol Year: 2010 Type: Article

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Full text: Available Main subject: Ascomycota / Pest Control, Biological / Metarhizium / Insecticides / Lepidoptera Limits: Animals Language: English Journal: Braz. j. biol Year: 2010 Type: Article