Selectivity of Metarhizium anisopliae and Beauveria bassiana to adults of Telenomus podisi (Hymenoptera: Scelionidae)

• Autor(a) principal: Battisti, Lucas
• Data de Publicação: 2022
• Outros Autores: Warmling, Jheniffer Valmira, Vieira, Claudinei de Freitas, Oliveira, Darlin Henrique Ramos de, Lima, Yuri Renan Alves de, Bueno, Adeney de Freitas, Potrich, Michele, Lozano, Everton Ricardi
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Semina. Ciências Agrárias (Online)
• Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/43840
• topic: Biological control; Pest insects; Egg parasitoid; Enthomopatogenic fungi.; Controle biológico; Insetos-praga; Parasitoide de ovo; Fungos entomopatogênicos.

The selectivity of entomopathogenic fungi to non-target organisms needs to be considered in Integrated Pest Management (IPM), because even though they are biological control agents, if used incorrectly, they can negatively alter the functioning of agroecosystems. Therefore, studies that assess the selectivity of these fungi to beneficial organisms are extremely important. The objective of this work was to evaluate the selectivity of Metarhizium anisopliae (Metarril®) and Beauveria bassiana (Boveril®) to adults of Telenomus podisi Ashmead (Hymenoptera: Scelionidae), under laboratory conditions. The products were evaluated on adult females of T. podisi, at the concentrations recommended by the manufacturer. To this end, 0.2 mL of suspensions of each product and control (treatments) were applied to the inner surface of glass tubes, and then a female T. podisi was placed in it (bigger, smaller 48 h of emergence). After 24 h of contact, cards with 25 eggs of Euschistus heros Fabricius (Hemiptera: Pentatomidae) were offered for 24 h (COF24). After this period, the COF24 were withdrawn. After 72 h of contact of the female with the tube surface, new E. heros egg cards were made available (COF72) for 24 h for T. podisi ovipositioning. The evaluations were carried out on a daily basis and the parameters evaluated were female longevity, percentage of parasitism, percentage of emergence, sex ratio, and egg-adult period. Mortality of T. podisi females was evaluated daily to determine longevity, percentage of parasitism and emergence, sex ratio, and egg-adult period. Metarril® and Boveril®, considered selective for adult females of T. podisi, did not negatively affect most of the parameters evaluated.