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<p>As dangerous vectors, mosquitoes pose a serious risk to both human and animal populations worldwide by transmitting dangerous viruses into uninhabitable areas. Because of the emergence of insecticide resistance, controlling the use of synthetic pesticides is essential. <i>S. diastaticus</i> was used in this investigation for the actinobacterial-mediated biosynthesis of Se-NPs. The biosynthesized Se-NPs were characterized using a variety of techniques, including UV, XRD, FT-IR, SEM with EDX, TEM, DLS, and zeta potential. The biosynthesized Se-NPs were effective against <i>C. quinquefasciatus</i>, <i>A. stephensi</i>, and <i>A. aegypti</i>, with LC<sub>50</sub> values of 8.13 µg/mL, 9.36 µg/mL, and 13.71 µg/mL, respectively. The highest concentration of Se-NPs revealed high pupicidal activity and increased larval pupal duration against all three mosquito species. The effect of Se-NPs considerably increased the SOD and GPx levels but drastically decreased the AChE and GST level after 24 h of treatment. Histopathological analyses of the treated larvae revealed damaged epithelial cells, peritrophic membranes, and gut cells as compared to the control group. Additionally, <i>A. salina</i> showed low mortality. Conclusively, the biosynthesized Se-NPs using <i>S. diastaticus</i> were used as a potential biopesticide for controlling <i>C. quinquefasciatus</i>, <i>A. stephensi</i>, and <i>A. aegypti</i>.</p><p></p>

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Evaluation of the larvicidal potential of selenium nanoparticles synthesized using Streptomyces diastaticus (KA-21) (OM758168) and their toxicity against the larvae of Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • Manickam Kalpana,
  • Krishnan Raguvaran,
  • Thulasiraman Manimegalai,
  • Suresh Kalaivani,
  • Palanisamy Devapriya,
  • Rajan Maheswaran

摘要

As dangerous vectors, mosquitoes pose a serious risk to both human and animal populations worldwide by transmitting dangerous viruses into uninhabitable areas. Because of the emergence of insecticide resistance, controlling the use of synthetic pesticides is essential. S. diastaticus was used in this investigation for the actinobacterial-mediated biosynthesis of Se-NPs. The biosynthesized Se-NPs were characterized using a variety of techniques, including UV, XRD, FT-IR, SEM with EDX, TEM, DLS, and zeta potential. The biosynthesized Se-NPs were effective against C. quinquefasciatus, A. stephensi, and A. aegypti, with LC50 values of 8.13 µg/mL, 9.36 µg/mL, and 13.71 µg/mL, respectively. The highest concentration of Se-NPs revealed high pupicidal activity and increased larval pupal duration against all three mosquito species. The effect of Se-NPs considerably increased the SOD and GPx levels but drastically decreased the AChE and GST level after 24 h of treatment. Histopathological analyses of the treated larvae revealed damaged epithelial cells, peritrophic membranes, and gut cells as compared to the control group. Additionally, A. salina showed low mortality. Conclusively, the biosynthesized Se-NPs using S. diastaticus were used as a potential biopesticide for controlling C. quinquefasciatus, A. stephensi, and A. aegypti.