The present study aimed to add value to palm oil by-products as substrates to efficiently produce conidia of Beauveria bassiana and Isaria javanica (Hypocreales: Cordycipitaceae) for biological control of the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae), through a solid-state fermentation process using palm kernel cake and palm fiber as nutrient source and solid matrix, respectively. The optimum culture conditions yielded high concentrations of viable conidia after air-drying, when the fungi were grown on palm kernel cake (B. bassiana 7.65 × 10 and I. javanica 2.91 × 10 conidia g dry substrate) after 6 days under optimal growth conditions set to 60% substrate moisture and 32 °C. Both fungal strains exhibited high efficacy against third-instar whitefly nymphs, inducing mortality up to 62.9 and 56.6% by B. bassiana and I. javanica, respectively, assessed after 9 days post-application in a screenhouse. Furthermore, we noted that insect mortality was strongly correlated with high atmospheric moisture, while B. bassiana appeared to require shorter accumulative hours under high moisture to kill whitefly nymphs compared to I. javanica. Our results underpin a feasible and cost-effective mass production method for aerial conidia, using palm kernel as the main substrate in order to produce efficacious fungal bioinsecticides against an invasive whitefly species in Brazil. Finally, our fermentation process may offer a sustainable and cost-effective means to produce eco-friendly mycoinsecticides, using an abundant agro-industrial by-product from Brazil that will ultimately assist in the integrated management of agricultural insect pests.
A pandemia da COVID-19 apresentou uma necessidade tempestiva e efetiva de medidas de prevenção e controle sanitário, e diante disso, a Vigilância Sanitária, articulada com demais áreas e órgãos, também se constituiu como uma importante aliada. A partir da análise descritiva das ações desenvolvidas até 20 de julho de 2020 e da coleta de dados registrados no Sistema Estadual de Informação em Vigilância Sanitária, o estudo objetiva apresentar um relato de experiência da atuação da Vigilância Sanitária do Paraná e dos desafios encontrados frente a COVID-19. Um fórum decisório foi ativado e foram desenvolvidas notas orientativas considerando discussões entre diferentes áreas técnicas. Ações regulatórias foram imprescindíveis, realizadas por meio de Resoluções, assim como as fiscalizatórias. No sistema, registraram-se 7.535 ações relacionadas à COVID-19, executadas de forma descentralizada. A pandemia e a necessidade de enfrentá-la de forma coesa, concreta e coerente fortaleceu a importância do trabalho integrado e articulado em equipe.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.