1. Diet composition has a differential effect on immune tolerance in insect larvae exposed to Mesorhabditis belari, Enterobacter hormaechei and its metabolites.
- Author
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Manjula P, Lalitha K, and Shivakumar MS
- Subjects
- Analysis of Variance, Animals, Biological Assay, Carbohydrates administration & dosage, Chromatography, High Pressure Liquid, Diet, Enterobacter immunology, Enterobacter pathogenicity, Gas Chromatography-Mass Spectrometry, Immune Tolerance, Larva immunology, Lethal Dose 50, Proteins administration & dosage, Rhabditoidea immunology, Rhabditoidea pathogenicity, Spectroscopy, Fourier Transform Infrared, Spodoptera physiology, Symbiosis, Virulence, Zinc administration & dosage, Enterobacter physiology, Pest Control, Biological, Rhabditoidea physiology, Spodoptera immunology
- Abstract
In insects, diet plays an important role in growth and development. Insects can vary their diet composition based on their physiological needs. In this study we tested the influence of diet composition involving varying concentrations of macronutrients and zinc on the immune-tolerance following parasite and pathogen exposure in Spodoptera litura larvae. We also tested the insecticidal potential of Mesorhabditis belari, Enterobacter hormaechei and its secondary metabolites on Spodoptera litura larvae. The results shows macronutrient composition does not directly affect the larval tolerance to nematode infection. However, Zinc supplemented diet improved the immune tolerance. While larvae exposed to bacterial infection performed better on carbohydrate rich diet. Secondary metabolites from bacteria produced an immune response in dose dependent mortality. The study shows that the larvae maintained on different diet composition show varied immune tolerance which is based on the type of infection., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2020
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