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September 14, 2026Journal of Applied Microbiology

Production of Entomopathogenic Fungi and Pathogenicity of Metarhizium anisopliae against Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae)

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Authors

TBThiago Souza BulhõesUniversidade Estadual Paulista (Unesp)PSPaula Leite dos SantosUniversidade Estadual Paulista (Unesp)BMBruno Felipe Prado de MeloUniversidade Estadual Paulista (Unesp)

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Overview

Experimental study reveals rapid mortality from Metarhizium anisopliae blastospores in Thaumastocoris peregrinus, indicating strong potential for invasive forest pest biocontrol.

Key Points

  • To evaluate the mass production feasibility of three entomopathogenic fungal strains and measure the biocontrol efficacy of Metarhizium anisopliae against the invasive bronze bug Thaumastocoris peregrinus.
  • Quantified conidial yields of Cordyceps javanica, M. anisopliae, and Beauveria bassiana in solid-state fermentation, followed by liquid culture optimization using industrial by-products and a rice flour-dextrose-yeast extract (M1) medium.
  • Assessed thermal tolerance at 45°C and performed laboratory bioassays against adult T. peregrinus to evaluate fungal propagule infectivity relative to the commercial formulation Metarril®.
  • Modeled insect survival dynamics and comparative mortality risks using median lethal time (LT50) calculations and Cox proportional hazards regression.
  • All M. anisopliae propagules produced 100% mortality in T. peregrinus within five days, with M1-derived blastospores reaching an LT50 of 1.81 days despite higher heat sensitivity at 45°C (LT50 of 0.182 h vs. 1.621 h for aerial conidia).
  • Cox proportional hazards modeling demonstrated that optimized M1 blastospores induced a mortality risk 2.51 times higher than the commercial standard Metarril® (Hazard Ratio = 2.51; 95% CI: 1.90–3.31).

Cite This Study

Bulhões et al. (2026) studied this question.

synapsesocial.com/papers/6aa7b2e10926e14a848b162dhttps://doi.org/10.1093/jambio/lxag236
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Also Consider

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  4. 4Pathogenicity of native strains of Bacillus thuringiensis, Beauveria bassiana and Metarhizium rileyi as entomopathogens against the polyphagous borer, Conogethes punctiferalis (Guenée) (Crambidae: Lepidoptera)2024 · 4 citations
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