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The book is dedicated to the memory of Neil Argo Croll (1941-1981),
Professor of Parasitology at McGill University,
a leading authority on nematology, who, more than 30 years
ago, published the first work on the subject of behaviour of
nematodes. Nematodes are a numerous (about a million species)
and ubiquitous group of animals rivalled in biodiversity only
by insects. They use all habitats, either directly (soil, food,
body of hosts) or indirectly (water and air), as free-living
forms or parasites.
The monograph, dealing with the behaviour of the phylum,
was prepared by twenty authors from the U.S.A., U.K.,
India, Canada, and New Zealand. It includes thirteen chapters
(plus an introduction and overview) supplemented with rich
(sometimes over 180 items) and most recent (dated until 2003)
references. Each of the concisely written chapters offers a comprehensive
knowledge of the subject. The work is illustrated
with a host of tables, diagrams and black and white pictures
and has a jointly prepared index of taxons and terms. The
authors, who are among the top experts in their fields, provide
comprehensive information both to scientists (such as ecologists,
parasitologists or taxonomists) and practitioners as well
as to all others interested in this fascinating group of animals.
Introduction, co-authored by both editors, defines the term
"behaviour", describes its types and gives a short overview of
individual chapters. Chapter 1 (written by G.W. Yeates) deals
with ecological and behavioural adaptations. It discusses the
variety of habitats used by nematodes, their ecological requirements,
migrations, ongoing adaptations, populations, food
resources and feedback effects. Chapter 2 (A.H.J. Burr and A.F.
Robinson), is entirely devoted to the locomotion behaviour
and goes from an explanation of the mechanics of movement,
illustrated by interesting diagrams and figures (also anatomic
photographs) up to the presentation of motion in different
environments. Chapter 3 (E. Riga) titled "Orientation Behaviour"
discusses the types of receptors and ways of orientation
of nematodes in the environment. In the next chapter, the authors
(A.L. Bilgrami and R. Gaugler) describe the feeding apparatus
and its function, food sources and feeding preferences
as well as pre- and post-feeding nematode activities. A very
interesting part of the book is a description of the reproduction
behaviour (Chapter 5), in which R. Huettel stresses the variety
of reproductive mechanisms developed in Nematoda for maintaining
populations. The author suggests that manipulation of
behaviour may become an important tool for limiting parasitic
nematodes in the environment - by a reduction of soil infestations
or animal infections. The chapter titled "Ageing and
Developmental Behaviour" (E.E. Lewis and E.E. Perez)
focuses on the diversity of behaviour of different stages of
free-living and parasitic nematodes. Chapter 7 (D.J. Wright)
about osmoregulatory and excretory behaviours is concerned
with physiology and ecology and refers directly to Chapter 8
titled "Physiological and Biochemical Basis of Behaviour"
(R.N. Perry and A.G. Maule), which deals mainly with the
functioning of nervous and muscular systems. It is worth noting
that in Chapter 9 "Molecular Basis for Behaviour" the
reader is offered an insight which is well-grounded in molecular
biology (M.M. Barr and J. Hu). This part of book deals
mainly with the species Caenorhabditis elegans. The nematode
was studied broadly in many aspects and was also the
first multicellular organism to have its genome completely sequenced.
As a result, a wide review of molecular tools, useful
for analysing behaviours, as well as the conclusions presented,
are focused on this species. Chapter 10 (P. Timper and K.G.
Davies) discusses biotic interactions including two of their
opposing forms - phoresy (facultative transport, obligate transport,
necromancy) and antagonism (predation, parasitism,
amensalism and competition). Chapter 11 (M.E. Barbercheck
and L. Duncan) deals with behavioural responses to physical
and chemical factors, as well as different forms of energy
(thermal and electromagnetic). The whole of Chapter 12 (B.
Boag and G.W. Yeats) is devoted to population dynamics. It
presents the current knowledge about spatial distribution of
nematodes in different environments, seasonal fluctuations,
population cycles and nematodes as bioindicators. The last
chapter (D.A. Wharton) is focused on survival strategies with
information about types of migrations, phoresis, ability to
adapt to extreme conditions and resistance adaptations. Some
excellent microphotographs taken by the author are an additional
asset of the study.
As a conclusion, it can be said that the reader of the book
receives a thorough knowledge of nematodes provided by various
disciplines and based on a rich literature of the subject.
Alist of key words makes it easy to locate the most important
problems. The book can thus be called a valuable guidebook
to the problems of the youngest discipline of zoology - nematology.
Rather understandably, parasitological subjects are
presented in the monograph in a limited way only, as the authors
are interested in all aspects of the life of this extraordinarily
varied group of animals. However, to understand many
aspects of parasitic nematodes' life, it is necessary to refer to
their primitive and unspecialised free-living forms, their "life
style" which is a starting point for specialization in parasitism.
The work can thus make very interesting reading even for those
readers who are only secondarily interested in nematodes.