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Creative Commons License 2018 Volume 5 Issue 4

Possible Chitin Inhibitor Effects of Melilotus Indicus (L.) Extraction on Spodoptera Littoralis (Boisduval) Under Laboratory Conditions

Mohamed Ahmed Ibrahim Ahmed, Ahmed Mahmoud Mohamed Ahmed, Mohamed Abdel-Rahman Mohamed Amro
Abstract

Yellow sweet-clover, Melilotus indicus (L.), is known for its medicinal and ethnomedicinal uses.  A very few studies have focused on the efficacy of it on pest control. Herein, the biological effects of sublethal concentrations of M. indicus extract in comparison with three insect growth regulators (IGRs), novaluron, lufenuron, and diflubenzuron against the life cycle of Spodoptera littoralis (Boisd.) were evaluated under laboratory conditions. All tested compounds, especially M. indicus, prolonged the duration of the larval and pupal stages comparing to that of the untreated control.  The emerged adult percentage was highly reduced by 91.35%, 78.96%, 77.33%, and 62.46% after larval feeding with the higher concentration of M. indicus extract, diflubenzuron, novaluron, and lufenuron; respectively. M. indicus extract and diflubenzuron caused high increment in malformation in larvae, pupa, and adults. The efforts should be implemented to get better understanding about the molecular basis of its possible unknown mode of action on growth hormones to be continued in the future.

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Entomology and Applied Science Letters is an international double-blind peer reviewed publication which publishes scientific research & review articles related to insects that contain information of interest to a wider audience, e.g. papers bearing on the theoretical, genetic, agricultural, medical and biodiversity issues. Emphasis is also placed on the selection of comprehensive, revisionary or integrated systematics studies of broader biological or zoogeographical relevance. In addition to full-length research articles and reviews, the journal publishes interpretive articles in a Forum section, Short Communications, and Letters to the Editor. The journal publishes reports on all phases of medical entomology and medical acarology, including the systematics and biology of insects, acarines, and other arthropods of public health and veterinary significance.

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