Nomuraea rileyi (Hypocreales: Clavicipitaceae) in Helicoverpa armigera (Lepidoptera: Noctuidae) larvae in Brazil

Authors

  • Victor Hugo Duarte da Costa Departamento de Agronomia, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), 39100-000 Diamantina, Minas Gerais, Brazil
  • Marcus Alvarenga Soares Departamento de Agronomia, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), 39100-000 Diamantina, Minas Gerais, Brazil
  • Francisco Andrés Dimaté Rodríguez Departamento de Entomologia, Universidade Federal de Viçosa 36570-000 Viçosa, Minas Gerais, Brazil
  • José Cola Zanuncio Departamento de Entomologia, Universidade Federal de Viçosa 36570-000 Viçosa, Minas Gerais, Brazil
  • Isabel Moreira da Silva Departamento de Fitotecnia, Universidade Federal de Viçosa 36570-000 Viçosa, Minas Gerais, Brazil
  • Fernando Hercos Valicente Embrapa Milho e Sorgo, 35701-970 Sete Lagoas, Minas Gerais, Brazil

Keywords:

biological control, cotton, damage, entomopathogenic fungus

Abstract

Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) is one of the most important polyphagous pests globally. It was reported in Brazil at the end of the 2012/2013 crop season. The aim of this study was to report the occurrence of an entomopathogenic fungus on H. armigera larvae in Brazil. We collected 589 larvae from cot­ton plantations in Bahia State, Brazil, and transported them to the laboratory of biological control of Embrapa Milho e Sorgo in Sete Lagoas, Minas Gerais State, Brazil. Of the 320 dead larvae, 106 were infected by Nomuraea rileyi (Farl.) Samson (Hypocreales: Clavicipi­taceae), causing 33.1% of the total mortality. This is the first report on the natural occurrence of the fungus N. rileyi infecting H. armi­gera larvae in Brazil.

 

Sumário

Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) é uma das pragas polífagas mais importantes do mundo e foi registrada no Brasil no final da safra 2012/2013. O objetivo foi relatar a ocorrência de um fungo entomopatogênico em lagartas de H. armigera no Brasil. Um to­tal de 589 lagartas foi coletado em plantios de algodoeiro no estado da Bahia, Brasil e transportadas para o laboratório de Controle Biológico da EMBRAPA Milho e Sorgo em Sete Lagoas, estado de Minas Gerais, Brasil. Das 320 lagartas mortas, 106 foram infectadas por Nomuraea rileyi (Farl.) Samson (Hypocreales: Clavicipitaceae), representando 33,1% da mortalidade total. Este é o primeiro relato da ocorrência na­tural do fungo N. rileyi em lagartas de H. armigera no Brasil.

 

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Issue

Vol. 98, No. 2 (June 2015)

Section

Scientific Notes

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