Exploring the Potential Effectiveness of Croton tiglium Oil and Its Nano-Emulsion on Earias insulana (Lepidoptera: Nolidae) DOI Creative Commons

Karima Khater,

Marwa Mohamed abd-Elrhmman,

Zeinab Mohamed Elbasheir Ali Said

et al.

Insects, Journal Year: 2025, Volume and Issue: 16(1), P. 72 - 72

Published: Jan. 12, 2025

Earias insulana Boisd. (Lepidoptera: Nolidae) is a major pest of cotton and other crops in Egypt, the widespread use insecticides has led to resistance. This study evaluates, for first time, bioactivity Croton tiglium (Malpighiales: Euphorbiaceae) oil its nano-emulsion (CTNE) against 25 newly hatched larvae E. We assessed their biological effects across different developmental stages performed histological ultrastructural examinations. Gas–liquid chromatography (GLC) identified several bioactive compounds C. crushed dry seeds, including fatty acids, hydrocarbons, sterols. CTNE showed excellent quality with zeta potential −17.7 mV, an average particle size 54.28 nm, spherical droplets 42.42 nm diameter. The LC50 values were 9.02% 2.70%, respectively. Both treatments significantly impacted characteristics Boisd., reduced larval pupal weight, lower adult emergence, decreased fecundity, increased mortality. Histologically, there was epithelial cell hypotrophy detachment, while damage included chromatin condensation, nuclear envelope folding, mitochondrial damage, indicating apoptotic degeneration. These findings suggest as potential, safe alternatives chemical insecticides.

Language: Английский

Exploring the Potential Effectiveness of Croton tiglium Oil and Its Nano-Emulsion on Earias insulana (Lepidoptera: Nolidae) DOI Creative Commons

Karima Khater,

Marwa Mohamed abd-Elrhmman,

Zeinab Mohamed Elbasheir Ali Said

et al.

Insects, Journal Year: 2025, Volume and Issue: 16(1), P. 72 - 72

Published: Jan. 12, 2025

Earias insulana Boisd. (Lepidoptera: Nolidae) is a major pest of cotton and other crops in Egypt, the widespread use insecticides has led to resistance. This study evaluates, for first time, bioactivity Croton tiglium (Malpighiales: Euphorbiaceae) oil its nano-emulsion (CTNE) against 25 newly hatched larvae E. We assessed their biological effects across different developmental stages performed histological ultrastructural examinations. Gas–liquid chromatography (GLC) identified several bioactive compounds C. crushed dry seeds, including fatty acids, hydrocarbons, sterols. CTNE showed excellent quality with zeta potential −17.7 mV, an average particle size 54.28 nm, spherical droplets 42.42 nm diameter. The LC50 values were 9.02% 2.70%, respectively. Both treatments significantly impacted characteristics Boisd., reduced larval pupal weight, lower adult emergence, decreased fecundity, increased mortality. Histologically, there was epithelial cell hypotrophy detachment, while damage included chromatin condensation, nuclear envelope folding, mitochondrial damage, indicating apoptotic degeneration. These findings suggest as potential, safe alternatives chemical insecticides.

Language: Английский

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