Laboratory test of Beauveria bassiana (Balsamo-Crivelli) Vuillemin s.l. (Hypocreales: Clavicipitaceae) baits for the biocontrol of the Toad grasshopper pest, Bufonacris claraziana (Saussure) (Orthoptera: Tristiridae)

• Published in: Egyptian journal of biological pest control 2022-09, Vol.32 (1), p.1-6, Article 110
• Main Authors: Mariottini, Yanina, Lange, Carlos E., Pelizza, Sebastian E.
• Format: Article
• Language: English
• Subjects: Baits; Beauveria bassiana; Bioassays; Biological control; Biomedical and Life Sciences; Bufonacris claraziana; Canola oil; Clavicipitaceae; Conidia; Endemic species; Entomopathogenic fungi; Entomopathogenic fungus; Grasshoppers; Hypocreales; Laboratories; Laboratory tests; Life Sciences; Livestock; Mortality; Orthoptera; Pest control; Pest outbreaks; Pests; Scientific (Short) note; Toad grasshopper; Toads; Tristiridae; Wheat bran; Zoology
• ISSN: 2536-9342; 1110-1768; 2536-9342
• DOI: 10.1186/s41938-022-00609-4

Background The Toad grasshopper pest, Bufonacris claraziana (Saussure) (Orthoptera: Tristiridae) is an endemic species of the Argentine Patagonia region. Among the Tristiridae family, it is the only species recognized as harmful to agricultural and livestock activities in the country. Outbreaks of B. claraziana have become a recurring phenomenon in the recent years, affecting different areas of the Patagonian provinces. The aim of this study was to evaluate, as laboratory bioassays, the mortality in young nymphs of this species treated with bait formulations of the entomopathogenic fungus Beauveria bassiana (Hypocreales: Clavicipitaceae). Results The two treatments performed, one of them (I) with conidia of B. bassiana only and the other (II) with conidia of B. bassiana plus canola oil as phagostimulant, produced significantly higher mortality than the control ( p