INTRODUCTION TO PARASITOLOGY(indirect life-cycles) and each parasite has a multiplicative phase which can occur at
various stages during the life-cycle.
Humans and domestic animals are more likely to suffer ill effects from parasites because
of the short time in evolutionary terms that parasite and host have been in contact. In order
for both the parasite and the host to survive an equilibrium has to be established between
acquisition of nutrients by the parasite and resistance to the presence of the parasite. There
are various ways by which a parasite can cause pathological damage to the host and these
are described with examples.End of chapter questions
INTRODUCTION TO PARASITOLOGY
Question 1.1 Why is parasitology considered to be a branch of ecology?
Question 1.2 What is the difference between a micro- and a macro-environment?
Question 1.3 What is the predetermined site?
Question 1.4 Which parasites are considered to be parasites of economic importance?
Question 1.5 In terms of parasitology what is the significance of a ‘young’ host–parasite
relationship, in evolutionary terms?
Question 1.6 What is the main difference between a parasite and a free-living animal?
Question 1.7 Name and explain the different types of parasitism.
Question 1.8 Outline the methods parasites have developed for invading a new host.
Question 1.9 Outline the methods of escape from a host.
Question 1.10 Describe the different types of parasite life-cycles.
Question 1.11 What is the difference between a definitive and an intermediate host?
Question 1.12 Describe the various types of intermediate hosts.
Question 1.13 What is meant by a multiplicative phase?
Question 1.14 What are the different types of multiplicative phases observed among
parasites?
Question 1.15 Discuss the significance of multiplicative phases from a parasite’s point
of view.
PARASITE–HOST INTERACTIONS
Question 1.1 What do you consider to be the reasons why man and domestic animals
are more likely to suffer pathological damage as a result of a parasitic
infection?
Question 1.2 What are zoonoses?
Question 1.3 What is meant by a host–parasite equilibrium?
Question 1.4 What happens when this equilibrium is disturbed?
Question 1.5 Outline the different effects a parasite can have upon its host.
Question 1.6 Using appropriate examples, describe what is meant by mechanical
damage to parasites.
Question 1.7 Why do certain invasive stages have to undergo migrations within the host?
Question 1.8 What pathology is likely to result due to parasite migrations?
Question 1.9 What effects can parasite nutrition have upon the host?
Question 1.10 What are the toxins likely to be deposited as a result of the presence of
a parasite?
Question 1.11 What is immunosuppression?