Journal of Plant Diseases and Protection

, Volume 127, Issue 1, pp 73–79 | Cite as

A glyphosate-based herbicide in a free-choice test on parasitism, emergence, and female-biased sex ratio of 10 Trichogrammatidae

  • Jonas Pereira Pontes
  • Germano Leão Demolin Leite
  • Edilson Paulo Rodrigues Bispo
  • Wagner de Souza TavaresEmail author
  • Claubert Wagner Guimarães de Menezes
  • Carlos Frederico Wilcken
  • José Cola Zanuncio
Original Article


Trichogrammatidae (Hymenoptera) egg parasitoids are released for the fall armyworm Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) management, and weeds are controlled mainly with glyphosate in corn Zea mays L. (Poales: Poaceae) crops. A glyphosate-based herbicide was sprayed at 13.94 L ha−1 on eggs of the worldwide used alternative host, the Mediterranean flour moth Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) parasitized by 10 Trichogrammatidae species, in a free-choice test. Parasitism, female emergence and female-biased sex ratio of these parasitoids were evaluated. Parasitism by Trichogramma acacioi Brun, Moraes & Soares, Trichogramma bennetti Nagaraja & Nagarkatti, Trichogramma brasiliensis Ashmead, Trichogramma galloi Zucchi, and Trichogramma pretiosum Riley was lower with glyphosate. This herbicide reduced the Trichogrammatoidea annulata de Santis, T. bennetti, Trichogramma bruni Nagaraja, Trichogramma demoraesi Nagaraja, T. galloi, and T. pretiosum female emergence. Female-biased sex ratio of T. annulata, T. bennetti, T. bruni, T. galloi, and T. pretiosum was lower with glyphosate. Glyphosate did not reduce the Trichogramma soaresi Nagaraja parasitism and female emergence, and, therefore, the use of this species has potential to be compatible with glyphosate.


Chalcidoidea Diammonium salt Parasitoid Substituted glycine Weed Zea mays 



To Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG), and Programa Cooperativo sobre Proteção Florestal (PROTEF) of the Instituto de Pesquisas e Estudos Florestais (IPEF) for financial support.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interests.

Human and animal rights

The article does not contain any human and animal rights.


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Copyright information

© Deutsche Phytomedizinische Gesellschaft 2019

Authors and Affiliations

  • Jonas Pereira Pontes
    • 1
  • Germano Leão Demolin Leite
    • 1
  • Edilson Paulo Rodrigues Bispo
    • 1
  • Wagner de Souza Tavares
    • 2
    Email author
  • Claubert Wagner Guimarães de Menezes
    • 3
  • Carlos Frederico Wilcken
    • 4
  • José Cola Zanuncio
    • 5
  1. 1.Insetário G.W.G. de Moraes, Instituto de Ciências AgráriasUniversidade Federal de Minas GeraisMontes ClarosBrazil
  2. 2.Asia Pacific Resources International Holdings Ltd. (APRIL)PT. Riau Andalan Pulp and Paper (RAPP)Pangkalan Kerinci, RiauIndonesia
  3. 3.Departamento de Ciências AgráriasInstituto Federal do Norte de Minas GeraisJanuáriaBrazil
  4. 4.Departamento de Proteção VegetalUniversidade Estadual Paulista “Júlio de Mesquita Filho”BotucatuBrazil
  5. 5.Departamento de Entomologia/BIOAGROUniversidade Federal de ViçosaViçosaBrazil

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