The objective of this research was to explore the succession pattern and abundance of carrion insects on decomposing pig carcasses, and the influence of environmental variables and poison on these processes. Conducted in a secluded area of the University of Ibadan stadium, this study used two domestic pigs, Sus scrofa, as surrogate human models. One pig was euthanized using Sniper insecticide, a common suicide agent, while the other was sacrificed without poison, serving as a control experiment.
The carcasses were left to decay until the dry stage, with observations made throughout the five stages of decomposition: fresh, bloat, active decay, advanced decay, and dry stage. Insect collection during decomposition was done using a sweep net, and the insects were preserved in alcohol for identification. Carrion insect families identified included Calliphoridae, Muscidae, and Dermestidae, with Calliphoridae being the most abundant and the first to colonize the decomposing carrion.
The findings from this study underscored the forensic importance of carrion insects, emphasizing their potential use in forensic investigations to estimate post-mortem intervals, causes of death, and places of death. Given the biological similarity between pigs and humans, these findings could contribute to solving human crime cases.
Inhaltsverzeichnis (Table of Contents)
- CHAPTER 1
- INTRODUCTION
- Forensic Entomology
- Forensic Entomotoxicology
- Carrion Insects
- Sniper
- Aims and Objectives of the Study
- CHAPTER 2
- LITERATURE REVIEW
- Forensic Entomology
- Decomposition
- Succession of Carrion Insects
- Arthropods associated with Carrion
- Animal Euthanasia
- Forensic Entomotoxicology
- Sniper (Dichlorvos)
- Detection of Toxins in Carrion Feeding Insects
- Justification of study
- CHAPTER 3
- MATERIALS AND METHODS
- STUDY SITE
- SAMPLE COLLECTION AND PROCESSING
- SAMPLE ANALYSES
- CHAPTER FOUR
- RESULTS
- Abundance and species composition of carrion insects on pig carcass
- Carrion Insect Succession on Pig carrion
- Effect of sniper insecticide on the length and weight of larva
- Variations in environmental variables at the field site
- CHAPTER FIVE
- DISCUSSION
- Abundance and species composition of carrion insects on pig carcass
- Carrion insect succession on pig carcass
- Effect of Sniper insecticide on the length and weight of larva
- Variations in environmental variables at the field site
Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)
This study aims to investigate the impact of the insecticide Sniper (Dichlorvos) on carrion insects, using pigs as surrogate human models. It explores the abundance, species composition, and successional patterns of carrion insects in relation to the presence of Sniper.
- The role of carrion insects in forensic investigations
- The effects of insecticides on carrion insect populations
- The use of pigs as surrogate models in forensic entomology
- The impact of Sniper on carrion insect development and behavior
- The application of forensic entomology in understanding the effects of environmental toxins.
Zusammenfassung der Kapitel (Chapter Summaries)
Chapter 1 provides an introduction to forensic entomology and forensic entomotoxicology, explaining the significance of carrion insects in criminal investigations. The chapter also outlines the objectives and scope of the study. Chapter 2 delves into the literature review, providing a comprehensive overview of forensic entomology, decomposition stages, carrion insect succession, and the impact of insecticides on insect populations. Chapter 3 outlines the materials and methods employed in the study, including the study site, sample collection procedures, and data analysis techniques. Chapter 4 presents the results of the study, focusing on the abundance and species composition of carrion insects, their successional patterns, and the impact of Sniper on larval development.
Schlüsselwörter (Keywords)
Forensic entomology, forensic entomotoxicology, carrion insects, Sniper (Dichlorvos), insecticide, pig carcass, decomposition, succession, abundance, species composition, larval development, environmental variables.
- Citation du texte
- Anonym (Auteur), 2023, Insecticide and Insects. A Forensic Analysis of Pigs as Human Surrogates in Crime Investigations, Munich, GRIN Verlag, https://www.grin.com/document/1366205
