Enzymatic Changes and Toxic Effect of Some Aromatic Plant Oils on The Cotton Leafworm, Spodoptera littoralis (Boisd.)

Abstract

The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasis will be placed on toxic effects observed at relevant exposures, which have direct impact on safety evaluation and risk assessment. The journal therefore welcomes papers on biology ranging from molecular and cell biology, biochemistry and physiology to ecology and environment, also systematics, microbiology, toxicology, hydrobiology, radiobiology and biotechnology. www.eajbs.eg.net Provided for non-commercial research and education use. Not for reproduction, distribution or commercial use.

Physiological Studies of Some Insecticides on Spodoptera littoralis Larvae

“…The reduction in alkaline phosphatase reflects the harmful effect on the digestive system by disability the larvae to metabolize food for all the biological processes. That in harmony with Fahmy, (2005), Ibrahim and Abd El-Kareem (2018) on S. littoralis showed different activity in alkaline phosphatase where reduced and increased significantly, in addition to a non-significant change in the acid phosphatase with the treatments. Therefore, the disturbance in acid and alkaline phosphatase led to a disturbance in the midgut structure, which causes disruption in the digestion and absorption process.…”

Efficacy of Artemisia judaica Extract and Certain Insecticides against Cotton Leafworm, Spodoptera littoralis (Lepidoptera: Noctuidae)

“…Thus, eucalyptus oil exhibited inhibitory effects that may not be able to detoxify by the detoxification enzymes of esterase, phosphatase, and GST in the larvae of S. littoralis. Therefore, eucalyptus could be used in control applications as a part of integrated pest management (Ibrahim and Abd El-Kareem, 2018). High concentrations of ethanolic extract of A. judaica showed an inhibition of AchE activity in treated aphids but observed activation in GST was detected (Acheuk et al, 2017).…”

Larvicide effects of Bacillus sp isolated from soil against fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae)

“…In addition, protease and lipase also simultaneously degrade the protein and fat components in the insect's body. Protease enzymes are able to degrade proteins making up the basement membrane resulting in melanization [28,29].…”