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Author: Brenda Nisbet
Publisher: Springer Science & Business Media
ISBN: 9401165556
Category : Science
Languages : en
Pages : 286
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Book Description
1 Modern biologists describe protozoa as microscopic eukaryotic organ isms with a capacity for establishing themselves in almost every con ceivable habitat provided it contains moisture in some form. In 1674 at the time when Antony von Leeuwenhoek was making his first observations of 'very small animalcules' in Berkelse Mere near his home town of Delft, this concept of the ubiquity of protozoa would have been difficult to comprehend. Leeuwenhoek's curiosity later led him to examine the body fluids, gut contents and excreta of different animals and to describe 'an inconceivably great company of living animalcules, and these of divers sorts and sizes'. Here were early des criptions of parasitic protozoa, species which later came to be recog nized as Opalina, Giardia, Trichomonas and others. Following his pioneering work in the field of microscopic observation, knowledge of protozoa has accumulated at an accelerating pace. Some 30,000 living species have been identified, and an equal number of fossil species, from habitats which range from the ocean waters to the exuvial fluid of insects. The study of protozoan nutrition is a particularly interesting aspect of this expanding field of zoology. What kind of nourishment do protozoa need, how do they acqlire it, and what influence do the answers to these two questions havE on where protozoa live? The need to determine what hId of food protozoa are utilizing in their environment is desirable in al ecological studies involving micro organisms of aquatic communities.
Author: Brenda Nisbet
Publisher: Springer Science & Business Media
ISBN: 9401165556
Category : Science
Languages : en
Pages : 286
Get Book Here
Book Description
1 Modern biologists describe protozoa as microscopic eukaryotic organ isms with a capacity for establishing themselves in almost every con ceivable habitat provided it contains moisture in some form. In 1674 at the time when Antony von Leeuwenhoek was making his first observations of 'very small animalcules' in Berkelse Mere near his home town of Delft, this concept of the ubiquity of protozoa would have been difficult to comprehend. Leeuwenhoek's curiosity later led him to examine the body fluids, gut contents and excreta of different animals and to describe 'an inconceivably great company of living animalcules, and these of divers sorts and sizes'. Here were early des criptions of parasitic protozoa, species which later came to be recog nized as Opalina, Giardia, Trichomonas and others. Following his pioneering work in the field of microscopic observation, knowledge of protozoa has accumulated at an accelerating pace. Some 30,000 living species have been identified, and an equal number of fossil species, from habitats which range from the ocean waters to the exuvial fluid of insects. The study of protozoan nutrition is a particularly interesting aspect of this expanding field of zoology. What kind of nourishment do protozoa need, how do they acqlire it, and what influence do the answers to these two questions havE on where protozoa live? The need to determine what hId of food protozoa are utilizing in their environment is desirable in al ecological studies involving micro organisms of aquatic communities.
Author: Brenda Nisbet
Publisher: Springer
ISBN: 9789401165570
Category : Science
Languages : en
Pages : 280
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Book Description
1 Modern biologists describe protozoa as microscopic eukaryotic organ isms with a capacity for establishing themselves in almost every con ceivable habitat provided it contains moisture in some form. In 1674 at the time when Antony von Leeuwenhoek was making his first observations of 'very small animalcules' in Berkelse Mere near his home town of Delft, this concept of the ubiquity of protozoa would have been difficult to comprehend. Leeuwenhoek's curiosity later led him to examine the body fluids, gut contents and excreta of different animals and to describe 'an inconceivably great company of living animalcules, and these of divers sorts and sizes'. Here were early des criptions of parasitic protozoa, species which later came to be recog nized as Opalina, Giardia, Trichomonas and others. Following his pioneering work in the field of microscopic observation, knowledge of protozoa has accumulated at an accelerating pace. Some 30,000 living species have been identified, and an equal number of fossil species, from habitats which range from the ocean waters to the exuvial fluid of insects. The study of protozoan nutrition is a particularly interesting aspect of this expanding field of zoology. What kind of nourishment do protozoa need, how do they acqlire it, and what influence do the answers to these two questions havE on where protozoa live? The need to determine what hId of food protozoa are utilizing in their environment is desirable in al ecological studies involving micro organisms of aquatic communities.
Author: Johanna. Laybourn-Parry
Publisher: Springer Science & Business Media
ISBN: 1468473166
Category : Science
Languages : en
Pages : 218
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Book Description
General Editor: Peter Calow, Department of Zoology, University of Sheffield, England The main aim of this series will be to illustrate and to explain the way organisms 'make a living' in nature. At the heart of this - their func tional biology - is the way organisms acquire and then make use of resources in metabolism, movement, growth, reproduction, and so on. These processes will form the fundamental framework of all the books in the series. Each book will concentrate on a particular taxon (species, family, class or even phylum) and will bring together information on the form, physiology, ecology and evolutionary biology of the group. The aim will be not only to describe how organisms work, but also to consider why they have come to work in that way. By concentrating on taxa which are well known, it is hoped that the series will not only illustrate the success of selection, but also show the constraints imposed upon it by the physiological, morphological and developmental limita tions of the groups. Another important feature of the series will be its organismic orienta tion. Each book will emphasise the importance of functional integra tion in the day-to-day lives and the evolution of organisms. This is crucial since, though it may be true that organisms can be considered as collections of gene-determined traits, they nevertheless interact with their environment as integrated wholes and it is in this context that individual traits have been subjected to natural selection and have evolved.
Author: Genoveva F. Esteban
Publisher: Springer Nature
ISBN: 3030599795
Category : Science
Languages : en
Pages : 188
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Book Description
This book emphasises the important role that protozoa play in many natural ecosystems. To shed new light on their individual adaptive skills, the respective chapters examine the ecology and functional biology of this diverse group of eukaryotic microbes. Protozoa are well-established model organisms that exemplify many general problems in population ecology and community ecology, as well as evolutionary biology. Their particular characteristics, like large population sizes, life cycles and motile sensory behaviour, have a profound impact on their survival, distribution, and interaction with other species. Thus, readers will also be introduced to protozoan habitats in a broad range of environments. Even though this group of unicellular organisms is highly diverse, the authors focus on shared ecological patterns. Students and scientists working in the areas of eukaryotic microbiology and ecology will appreciate this updated and revised 2nd Edition as a valuable reference guide to the “lifestyles” of protozoa.
Author: J. F. Darbyshire
Publisher: Oxford University Press, USA
ISBN:
Category : Science
Languages : en
Pages : 232
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Book Description
Protozoa are active components of the soil microfauna. For example, they may stimulate bacterial metabolism and some fungal metabolites can lyse protozoa. They may be predators of bacteria and hence have a role in biological control. Their presence in groundwaters can be used as an indicator of pollution, while they are also being used to treat sewage in the activated-sludge and reed-bed processes. They are believed to be major secondary decomposers in soil and increased knowledge about these microorganisms is important to sustain soil fertility and food production. This book is the first in English for 65 years devoted entirely to soil protozoology. It is written by experienced microbiologists and should be of interest to protozoologists, other microbiologists, and soil scientists.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251305722
Category : Political Science
Languages : en
Pages : 278
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Book Description
New evidence this year corroborates the rise in world hunger observed in this report last year, sending a warning that more action is needed if we aspire to end world hunger and malnutrition in all its forms by 2030. Updated estimates show the number of people who suffer from hunger has been growing over the past three years, returning to prevailing levels from almost a decade ago. Although progress continues to be made in reducing child stunting, over 22 percent of children under five years of age are still affected. Other forms of malnutrition are also growing: adult obesity continues to increase in countries irrespective of their income levels, and many countries are coping with multiple forms of malnutrition at the same time – overweight and obesity, as well as anaemia in women, and child stunting and wasting.
Author: Heinz Mehlhorn
Publisher: Springer Science & Business Media
ISBN: 3540668195
Category : Medical
Languages : en
Pages : 684
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Book Description
This second edition provides a comprehensive review of the facts and trends in veterinarian and human parasitology. Several internationally renowned specialists have been added to the authors of the first edition, and the whole is now organised in an encyclopedic arrangement of comprehensive keywords, thus speeding up the search for information.
Author: Seppo Saari
Publisher: Academic Press
ISBN: 0128141131
Category : Medical
Languages : en
Pages : 290
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Book Description
Canine Parasites and Parasitic Diseases offers a concise summary, including the distribution, epidemiology, lifecycle, morphology, clinical manifestations, diagnosis, prophylaxis and therapeutic measures on the most important parasites affecting dogs. The book includes their classification, structure, lifecycles, occurrence, and the diagnosis and treatment of infestations. Chapters are presented in a consistent and logical format with extensive use of tables, photographs and line drawings that help veterinarians and students quickly find answers to questions. The book informs on 100 different species of parasite related to the canine world and is is aimed not only at veterinary practitioners but also in dog enthusiasts, pharmacies and laboratories. - Fully illustrated with high-quality figures and illustrations - Provides insights on the risk factors and prevention of parasite infections in dogs and gives guidelines for anthelmintic treatment - Serves professionals, students, parasitologists and veterinary scientists - Present an easy-to-use handbook on the identification of canine parasites and the diseases associated with parasitic infection
Author: Ynes R. Ortega
Publisher: Springer Science & Business Media
ISBN: 0387311971
Category : Technology & Engineering
Languages : en
Pages : 301
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Book Description
This book examines the two major parasite groups that are transmitted via water or foods: the single-celled protozoa, and the helminths: cestodes (tapeworms), nematodes (round worms), and trematodes (flukes). Each chapter covers the biology, mechanisms of pathogenesis, epidemiology, treatment, and inactivation of these parasites. This important new text offers a better understanding of the biology and control of parasitic infections necessary to reduce or eliminate future outbreaks in the U.S. and elsewhere.
Author: Joseph Fiksel
Publisher: Elsevier
ISBN: 1483191052
Category : Business & Economics
Languages : en
Pages : 193
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Book Description
Biotechnology Risk Assessment: Issues and Methods for Environmental Introductions tackles the environmental concerns associated with utilizing contemporary biotechnology. The title also examines the methods of implementing biotechnology while also minimizing the risks. The text first covers the suitability and applicability of risk assessment methods for environmental applications of biotechnology, and then proceeds to tackling the methods for evaluation of microorganism properties. Next, the selection deals with human exposure to viruses and genetically altered bacteria. The text also tackles the effects of bioengineered organisms on the ecosystem, along with the assessment of the transport and fate of bioengineered microorganisms in the environment. The seventh chapter discusses the analysis of the function and structure of ecosystem, while the eighth chapter details the controlled testing and monitoring methods for microorganisms. The book will be of great use to biotechnologists, microbiologists, ecologists, epidemiologists, and virologists.
