Venomous arthropods are those that release a poisonous substance (venom) when disturbed. They release the venom in their defense against intruders. Examples of venomous arthropods are scorpions, wasps, some caterpillars and bees. The word “parasite” is derived from two Greek words, “para”, meaning “beside”, and “sitos” meaning “food”. Therefore, a parasite literally means an organism that is beside another organism for purposes of obtaining food. Adam, et al. (1979) defined a parasite as an organism which depends for part of its life or for its entire life on another organism, called the host, from which it obtains food and shelter. According to Smyth (1996), hosts are normally of a different species from their parasites. Parasitism is a kind of adaptation for survival, and in any case, a true parasite should not kill its host, lest it will kill its source of survival and/or kill itself too. Although many parasitic organisms are harmless to the host, others are pathogenic; they cause disease in their hosts, leading to morbidity and death of the host. The parasitic mode of life must have been a survival mechanism developed by certain organisms since the beginning of life on earth, about 4 billion years ago. It must have been impossible for these organisms to survive on their own. It is known that environment can change; presenting different conditions each time and organisms struggle to cope and survive with the change. We are aware that the earth has gone through periods of ice, fire, meteorite strikes, volcanic eruptions, global dust veils, acid rain, and continental upheavals. When such changes occur in the environment, organisms naturally take refuge in safer habitats, hosts or geographical locations. Better still, others change behaviour or transit through an evolutionary process into a new organism in order to fit within the new conditions. So, changes in the environment present with both challenges and opportunities. Organisms which were once free living can become parasitic and those which were once non-pathogenic can become pathogenic.
Table of Contents
1. INTRODUCTION
2. DESCRIPTION
3. GENERAL ANALYSIS
4. ACTUALIZATION
The Host, Habitat and Geographical Range, and Disease Relationships of Venomous Arthropods
The Host, Habitat and Geographical Range, and Disease Relationships of Parasitic arthropods
The Host, Habitat and Geographical Range, and Disease Relationships of Arthropod Borne Parasites
The vector range of other arthropod borne pathogens and diseases
5. DISCUSSIONS
6. GENERAL RECOMMENDATIONS
7. CONCLUSION
Research Objectives and Themes
This work aims to evaluate the host, habitat, and geographical distribution of various arthropod species and the diseases they transmit, particularly in the context of shifting ecological patterns driven by global warming and climate change, in order to improve management and control strategies.
- Host-parasite relationships and ecological habitats of venomous and parasitic arthropods.
- Transmission dynamics of arthropod-borne diseases in humans and livestock.
- The impact of global warming on the distribution of arthropod vectors and pathogen prevalence.
- Entomological classification and taxonomy of medical and veterinary insects.
- Strategic recommendations for mitigating disease outbreaks in changing environments.
Excerpt from the Book
Introduction
Venomous arthropods are those that release a poisonous substance (venom) when disturbed. They release the venom in their defense against intruders. Examples of venomous arthropods are scorpions, wasps, some caterpillars and bees. The word “parasite” is derived from two Greek words, “para”, meaning “beside”, and “sitos” meaning “food”. Therefore, a parasite literally means an organism that is beside another organism for purposes of obtaining food. Adam, et al. (1979) defined a parasite as an organism which depends for part of its life or for its entire life on another organism, called the host, from which it obtains food and shelter. According to Smyth (1996), hosts are normally of a different species from their parasites. Parasitism is a kind of adaptation for survival, and in any case, a true parasite should not kill its host, lest it will kill its source of survival and/or kill itself too.
Although many parasitic organisms are harmless to the host, others are pathogenic; they cause disease in their hosts, leading to morbidity and death of the host. The parasitic mode of life must have been a survival mechanism developed by certain organisms since the beginning of life on earth, about 4 billion years ago. It must have been impossible for these organisms to survive on their own. It is known that environment can change; presenting different conditions each time and organisms struggle to cope and survive with the change. We are aware that the earth has gone through periods of ice, fire, meteorite strikes, volcanic eruptions, global dust veils, acid rain, and continental upheavals. When such changes occur in the environment, organisms naturally take refuge in safer habitats, hosts or geographical locations.
Summary of Chapters
1. INTRODUCTION: Discusses the biological definitions and evolutionary background of venomous and parasitic arthropods and their relationship with hosts.
2. DESCRIPTION: Details the various types of envenomization and the general ecological characteristics of significant medically important arthropods.
3. GENERAL ANALYSIS: Provides a technical breakdown of parasitic arthropods and the categorization of diseases they vector among humans and animals.
4. ACTUALIZATION: Examines specific host and habitat data for venomous, parasitic, and pathogen-vectoring arthropods, mapping their global ranges.
5. DISCUSSIONS: Analyzes the link between climate change, greenhouse gas effects, and the potential expansion of parasite distributions.
6. GENERAL RECOMMENDATIONS: Proposes systematic research and legal strategies to manage the movement and proliferation of arthropod-borne diseases.
7. CONCLUSION: Summarizes the key findings regarding host-range expansions and emphasizes the need for targeted suppression of primary vectors.
Keywords
Medical Entomology, Veterinary Entomology, Arthropods, Parasites, Pathogens, Global Warming, Climate Change, Host-Habitat Range, Vector-borne Diseases, Trypanosomiasis, Malaria, Ticks, Mosquitoes, Zoonosis, Parasitology.
Frequently Asked Questions
What is the primary focus of this publication?
The work focuses on the host, habitat, and geographical range of venomous and parasitic arthropods, investigating how their distribution and disease relationships interact with environmental changes.
Which specific arthropod groups are covered?
The publication covers a wide range of arthropods, including insects like mosquitoes, tsetse flies, fleas, lice, and arachnids such as various tick species and mites.
What is the core research question?
The core inquiry concerns how global warming and climate change might trigger an expansion of host and habitat ranges for arthropod-borne parasites, thereby altering disease prevalence.
What methodology does the author employ?
The author utilizes a comprehensive review of existing entomological, parasitological, and epidemiological literature to compile updated reference tables of pathogen-host relationships.
What does the main body of the work address?
It provides detailed descriptive accounts and tabulated summaries of the vectors, geographical distribution, and the pathogenic impact of diseases ranging from malaria and trypanosomiasis to tick-borne fevers.
Which keywords define this work?
Key terms include medical entomology, vector-borne diseases, climate change impact, arthropod classification, and specific parasitic genera like Trypanosoma, Plasmodium, and various tick families.
How does climate change specifically impact disease transmission in this context?
The author argues that altered precipitation and temperature patterns disrupt riverine ecosystems and habitat limits, potentially leading to the emergence or re-emergence of pest populations in previously unaffected regions.
What makes the documentation of tick-borne diseases particularly significant here?
Ticks are identified as the most diverse and widespread disease vectors, causing significant economic losses in livestock and severe health issues in humans, making them a priority for systematic mapping.
- Citation du texte
- ALFRED COSMAS BUTELE (Auteur), 2013, The Host, Habitat and Geographical Range; and Disease Relationships of Venomous and Parasitic Arthropods, and Arthropod-Borne Parasites, Munich, GRIN Verlag, https://www.grin.com/document/208887
