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| Autori principali: | , , , , |
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| Natura: | Artículo Open Access |
| Pubblicazione: |
Wiley
2025
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| Soggetti: | |
| Accesso online: | https://onlinelibrary.wiley.com/doi/10.1111/eea.13608 |
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Sommario:
- Surface characterization of the cuticle of third‐instar larvae of Diatraea saccharalis and Helicoverpa zea Diana R. Vasquez Marcus Frank Armin Springer Martha I. Gómez Diana M. Aragón Entomologia Experimentalis et Applicata Abstract Lepidopteran insects are among the most significant crop pests in the Americas, causing extensive economic damage to sugarcane, tobacco, cotton, tomato, and corn crops. To improve biopesticide design for their control, it is essential to characterize the insect cuticle, which acts as a barrier against fungal infections, regulates compound permeation, and affects bioproduct adhesion. This study characterized the cuticles of Diatraea saccharalis (Fabricius) (Lepidoptera: Crambidae) and Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae) based on fatty acid composition, morphology, contact angle, adhesion and cohesion work, spreading coefficient, and surface free energy (polar and dispersive components). Diatraea saccharalis exhibited higher saturated fatty acid content, whereas H. zea showed greater polyunsaturated fatty acid levels. Morphologically, H. zea displayed more developed mandibles and ventral/dorsal spines compared with D. saccharalis . Water had the highest adhesion work on D. saccharalis , whereas formamide liquid showed the highest adhesion on H. zea . Dimethyl sulfoxide and ethylene glycol spread more effectively on both species. Overall, D. saccharalis exhibited hydrophilic cuticle properties, whereas H. zea was more hydrophobic. This study provides foundational insights into cuticular characteristics, enabling the development of biopesticides with improved efficacy for pest control in agricultural systems. 10.1111/eea.13608 http://onlinelibrary.wiley.com/termsAndConditions#vor