Chapter 4 Role of insect growth regulators in insect/pest control
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Himani Karakoti
Abstract
Insecticides with growth regulating properties may adversely affect insects by controlling or suppressing specific biochemical pathways or processes necessary for their growth and development. Insect growth regulators (IGRs) are either synthetic chemicals or derived from other natural sources such as plants. These include chitin synthesis inhibitors, juvenile hormone analogs, anti-juvenile hormone, and molting hormone analogs. Insects exposed to such chemicals may die due to abnormal hormonal regulation, prolonged exposure at the developmental stage, or from an abnormal termination of a developmental stage itself. The main advantage of accepting IGRs is that they target juvenile harmful insect populations while causing less detrimental toxic effects to beneficial insects. In addition, some insects show resistance to synthetic insecticides, while they are less likely to become resistant against IGRs. On account of these advantages, the chemical composition of naturally occurring insect hormones is now being researched and used as a basis for the synthesis of analogs or mimics that are harmful to insects. The purpose of this publication is to explain the mechanism involved in the action of different classes of IGRs, their impact, and advantages in insect/pest control.
Abstract
Insecticides with growth regulating properties may adversely affect insects by controlling or suppressing specific biochemical pathways or processes necessary for their growth and development. Insect growth regulators (IGRs) are either synthetic chemicals or derived from other natural sources such as plants. These include chitin synthesis inhibitors, juvenile hormone analogs, anti-juvenile hormone, and molting hormone analogs. Insects exposed to such chemicals may die due to abnormal hormonal regulation, prolonged exposure at the developmental stage, or from an abnormal termination of a developmental stage itself. The main advantage of accepting IGRs is that they target juvenile harmful insect populations while causing less detrimental toxic effects to beneficial insects. In addition, some insects show resistance to synthetic insecticides, while they are less likely to become resistant against IGRs. On account of these advantages, the chemical composition of naturally occurring insect hormones is now being researched and used as a basis for the synthesis of analogs or mimics that are harmful to insects. The purpose of this publication is to explain the mechanism involved in the action of different classes of IGRs, their impact, and advantages in insect/pest control.
Chapters in this book
- Frontmatter I
- Contents V
- List of contributing authors IX
- Chapter 1 An introduction to biorational pest control agents 1
- Chapter 2 Global current scenario and future prospectus of biorationals 23
- Chapter 3 Biorational pest management: potentials, unintended consequences, and future concerns 47
- Chapter 4 Role of insect growth regulators in insect/pest control 77
- Chapter 5 Chemistry of sex pheromones and their role in integrated pest management 95
- Chapter 6 Semiochemicals and other insect communication signals for controlling insect pest 107
- Chapter 7 Role of phytoalexins in plant disease resistance 127
- Chapter 8 Microbial pesticides for plant protection 141
- Chapter 9 Entomopathogenic fungi as biological control agents 181
- Chapter 10 Pesticides of plant origin: botanicals 199
- Chapter 11 Plant essential oils: a source of eco-friendly pesticides 221
- Chapter 12 Plant oleoresins as source of environment-friendly pesticides 237
- Chapter 13 The rise of plant-based nematicides: a sustainable solution for crop protection 261
- Chapter 14 Biorationals: global situation and future possibilities 281
- Chapter 15 Microbial production of amino acids and peptides 295
- Chapter 16 Essential oils as biorational insecticides 335
- Chapter 17 Bioherbicides for integrated weed management 355
- Chapter 18 Dilemma hovers over the rationality of biorational insecticides: their unintended effects and consequences 373
- Index 401
Chapters in this book
- Frontmatter I
- Contents V
- List of contributing authors IX
- Chapter 1 An introduction to biorational pest control agents 1
- Chapter 2 Global current scenario and future prospectus of biorationals 23
- Chapter 3 Biorational pest management: potentials, unintended consequences, and future concerns 47
- Chapter 4 Role of insect growth regulators in insect/pest control 77
- Chapter 5 Chemistry of sex pheromones and their role in integrated pest management 95
- Chapter 6 Semiochemicals and other insect communication signals for controlling insect pest 107
- Chapter 7 Role of phytoalexins in plant disease resistance 127
- Chapter 8 Microbial pesticides for plant protection 141
- Chapter 9 Entomopathogenic fungi as biological control agents 181
- Chapter 10 Pesticides of plant origin: botanicals 199
- Chapter 11 Plant essential oils: a source of eco-friendly pesticides 221
- Chapter 12 Plant oleoresins as source of environment-friendly pesticides 237
- Chapter 13 The rise of plant-based nematicides: a sustainable solution for crop protection 261
- Chapter 14 Biorationals: global situation and future possibilities 281
- Chapter 15 Microbial production of amino acids and peptides 295
- Chapter 16 Essential oils as biorational insecticides 335
- Chapter 17 Bioherbicides for integrated weed management 355
- Chapter 18 Dilemma hovers over the rationality of biorational insecticides: their unintended effects and consequences 373
- Index 401
