(Ebook) Insect Molecular Biology and Ecology 1st Edition by Klaus H Hoffmann ISBN 1482231883 978-1482231885

(Ebook) Insect Molecular Biology and Ecology 1st Edition by Klaus H Hoffmann ISBN 1482231883 978-1482231885

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ISBN 10: 1482231883

ISBN 13: 978-1482231885

Author: Klaus H Hoffmann

Insects represent the most abundant and diverse animal group on Earth. The number of described species is more than one million and up to ten million are estimated. Insects have one of the widest distributions in the world because they have adapted to extreme ranges of environments.

Molecular ecology studies ecological processes based on the analysis of biomacromolecules, particularly DNA, RNA, and proteins, but also of low-molecular weight signal compounds. Molecular ecology uses the exciting opportunities offered by the tools of molecular biology.

The book presents current entomological research, where molecular tools help to advance traditional ecological studies. Chapters include ones on insect–insect and insect–plant interactions, on mechanisms of environmental adaptation, or on the use of insect biotechnology in pest and vector control. The book helps to combine powerful methods in molecular biology with exciting issues in ecology to understand why insects became "masters of survival."

Table of contents: 

1. Mechanisms of Polyphenism in Insects

• Polyphenism refers to the phenomenon where a single genotype can lead to multiple distinct phenotypes depending on environmental cues (e.g., caste differentiation in ants, seasonal forms in butterflies).

• Mechanisms include hormonal regulation (like juvenile hormone and ecdysteroids), epigenetic factors, and gene expression pathways.

2. Toxins, Defensive Compounds, and Drugs from Insects

• Explores how insects produce or sequester chemical compounds for defense (e.g., cantharidin, alkaloids).

• Applications in drug discovery, pest control, and biochemistry.

3. Insect Bioluminescence in the Post-Molecular Biology Era

• Bioluminescence systems (like luciferin-luciferase in fireflies) are being re-examined with modern molecular tools.

• Use in biotechnology, biosensors, and gene expression studies.

4. A Glance on the Role of miRNAs in Insect Life

• MicroRNAs regulate gene expression and are crucial in development, metamorphosis, immunity, and stress response.

• Research uses high-throughput sequencing to identify miRNA functions across insect species.

5. Advances in Insect Physiology and Endocrinology through Genomics and Peptidomics

• Genomic and peptidomic (peptide profiling) tools reveal new aspects of hormonal regulation, neuropeptides, and reproductive biology.

• Helps understand key insect processes and identify targets for pest control.

6. Neuropeptide Signaling and RNA Interference

• Neuropeptides are essential for behavior, feeding, reproduction, etc.

• RNAi is used to knock down genes in these pathways, helping dissect their function and potentially control pests.

7. Insect Photoperiodism

• Studies how insects respond to changes in day length to regulate development, reproduction, or diapause.

• Underlies seasonal adaptation and is often mediated by circadian and hormonal systems.

8. Insects in Winter: Metabolism and Regulation of Cold Hardiness

• Focuses on physiological adaptations like cryoprotectants (e.g., glycerol, antifreeze proteins) and metabolic rate depression.

• Relevant for understanding overwintering survival and climate change resilience.

9. Evolutionary Ecology of Insect Immunity

• Examines how ecological factors (e.g., parasites, pathogens, environment) shape the immune system.

• Integrates evolutionary biology with molecular immunology.

10. The Coleopteran Gut and Targets for Pest Control

• Coleoptera (beetles) have specialized guts; understanding their microbiota, digestive enzymes, and barriers can help develop biocontrol strategies or targeted pesticides.

11. Trypsin Modulating Oostatic Factor (TMOF) and Insect Biotechnology

• TMOF inhibits digestive trypsin in mosquitoes, affecting nutrient uptake and reproduction.

• A biotechnological target for population control of vectors like Aedes aegypti.

12. RNAi-Based Functional Analysis of Biosynthetic Enzymes and Transport Proteins in Juvenile Leaf Beetles

• Uses RNA interference to study genes involved in chemical defenses (e.g., secretion of toxins by beetles).

• Helps understand metabolic pathways and offers insights for pest management.

13. Silks from Insects – From Natural Diversities to Technical Applications

• Insects like silkworms, weaver ants, and caddisflies produce silk with diverse properties.

• Research is translating this natural diversity into biomaterials, textiles, and medical devices.

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