Can Trichogramma atopovirilia Oatman & Platner replaces Trichogramma galloi Zucchi for Diatraea saccharalis (Fabricius) control?

Autor(es)

Camarozano, Carolina Tieppo ^[1] ; Coelho Jr, Aloisio ; Querino da Silva, Ranyse Barbosa ^[2] ; Postali Parra, Jose Roberto ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, ESALQ, Dept Entomol & Acarol, BR-13418900 Piracicaba, SP - Brazil

^[2] Embrapa Sede, Parque Estaqao Biol, S-N, BR-70770901 Brasilia, DF - Brazil

^[3] Coelho Jr, Jr., Aloisio, Univ Sao Paulo, ESALQ, Dept Entomol & Acarol, BR-13418900 Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Scientia Agricola; v. 79, n. 3 2022.
• Citações Web of Science: 0

Resumo

Studies on aggressiveness of parasitoids, as assessed by their parasitism against pests, used in biological-control programs are highly important to select the most suitable species and/or strain to control insect pests. The present study investigated whether the egg parasitoid Trichogramma galloi Zucchi, an efficient control agent for sugarcane borer Diatraea saccharalis (Fabricius) in Brazil, could be replaced by Trichogramma atopovirilia Oatman \& Platner, a parasitoid easier to mass-produce, since it has been found parasitizing D. saccharalis eggs in the warmest region of Brazil and Argentina. Three strains of the genus Trichogramma were compared: T. atopovirilia (ATP strain) reared on a factitious host Anagasta kuehniella (Zeller); T. atopovirilia isoline ATP-I, reared on D. saccharalis eggs for six generations; and T. galloi, reared on A. kuehniella eggs. We measured parasitism of each strain for 72 h and for the entire life span, parasitism rate per cluster of D. saccharalis eggs, number of parasitoids emerged (parasitism viability), and parasitoid life span. The results confirmed that T. galloi is the best species for D. saccharalis control, showing higher control potential, since parasitism and emergence rate were higher for this species. Although T. atopovirilia ATP-I performed reliably in all parameters, T. galloi exceeded and was the most indicated for mass-rearing in control programs for sugarcane borer. (AU)

• Processo FAPESP: 18/02317-5 - Centro de Excelência em Controle Biológico
• Beneficiário: José Roberto Postali Parra
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 14/50871-0 - INCT 2014: Instituto Nacional de Ciência Tecnologia de Semioquímicos na Agricultura
• Beneficiário: José Roberto Postali Parra
• Modalidade de apoio: Auxílio à Pesquisa - Temático