Nutrition In The Lower Metazoa

Author : D. C. Smith,Y. Tiffon
Publisher : Elsevier
Page : 189 pages
File Size : 48,9 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483145723

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Nutrition in the Lower Metazoa by D. C. Smith,Y. Tiffon Pdf

Nutrition in the Lower Metazoa contains the proceedings of a meeting held at the University of Caen, France on September 11-13, 1979. Organized into 14 chapters, this book begins with a discussion of the phagocytosis in Polycelis tenuis and adaptational aspects in feeding in freshwater triclads. Subsequent chapters explore selection in sponge feeding processes; nutrition in symbiotic Turbellaria; some effects of diet on the biology of the rotifers; and the role of nutrition in the establishment of the green hydra symbiosis. The phosphorus economy of the green hydra symbiosis and the nutrition of marine sponges are also explained.

Author : Ellsworth C. Dougherty
Publisher : Univ of California Press
Page : 502 pages
File Size : 55,8 Mb
Release : 2024-06-30
Category : Electronic
ISBN : 8210379456XXX

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The Lower Metazoa by Ellsworth C. Dougherty Pdf

Author : Geoffrey Howard Bourne
Publisher : S. Karger AG (Switzerland)
Page : 312 pages
File Size : 48,8 Mb
Release : 1981
Category : Animal feeding
ISBN : WISC:89030575633

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Human Nutrition and Animal Feeding by Geoffrey Howard Bourne Pdf

Author : T.L. Simpson
Publisher : Springer Science & Business Media
Page : 678 pages
File Size : 46,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461252146

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The Cell Biology of Sponges by T.L. Simpson Pdf

Modem biology owes much to the study of favorable model systems which fa cilitates the realization of critical experiments and results in the introduction of new concepts. Examples of such systems are numerous and studies of them are regularly recognized by the scientific community. The 1983 Nobel Prize in Med icine and Physiology is a magnificent example in which com plants served as the experimental model. In a manner somewhat more modest, other biological systems have attracted recognition due to their critical phylogenetic position, or indeed because of their uniqueness which distinguishes them from all other organisms. Assuredly, among the whole assemblage ofliving organisms, sponges stand out as worthy of interest by scientists: they are simultaneously models, an important group in evolution, and animals unlike others. As early as the beginning of this century, sponges appeared as exceptional models for the study of phenomena of cell recognition. Innumerable works have been dedicated to understanding the mechanisms which assure the reaggregation of dissociated cells and the reconstitution of a functional individual. Today, re search on these phenomena is at the ultimate, molecular level. Through an as semblage of characteristics the sponges are, based upon all available evidence, the most primitive Metazoans. Their tissues-perhaps one can say their cell groups-are loosely assembled (they possess no tight or gap junctions), cell dif ferentiation appears highly labile, and they do not develop any true organs. But, they are most certainly Metazoans.

Author : T Pandian
Publisher : Elsevier
Page : 538 pages
File Size : 43,7 Mb
Release : 2012-12-02
Category : Science
ISBN : 9780323146739

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Protozoa through Insecta by T Pandian Pdf

Animal Energetics, Volume 1: Protozoa through Insecta provides information pertinent to bioenergetics, which is the study of energy transformation in living systems that can be studied at various levels of biological organization, including organismic, population, as well as molecular and cellular. This book discusses the various facets of animal energetics. Comprised of 10 chapters, this book starts with an overview of the wide spectrum of trophic types found within the free-living Protozoa. This text then discusses the substantial differences that occur in the growth, respiration, and overall feeding activities of sponges. Other chapters consider the evolution of symbioses in platyhelminths and rhynchocoelans, which provides an opportunity to understand the physiological adaptations that are favored in their life cycle. This book discusses as well the data on energetics of predators, pests, and parasitoids. The final chapter deals with the inherent difficulties encountered in the estimation of bioenergetics components. Nutritionists, biologists, physiologists, and ecologists will find this book useful.

Author : J. Malcolm Shick
Publisher : Springer Science & Business Media
Page : 416 pages
File Size : 44,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401130806

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A Functional Biology of Sea Anemones by J. Malcolm Shick Pdf

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 Junctional 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 limitations of the groups. Another important feature of the series will be its organismic orientation. Each book will emphasize the importance of functional integration 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 : E.R. Schockaert,I.R. Ball
Publisher : Springer Science & Business Media
Page : 300 pages
File Size : 44,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400986688

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The Biology of the Turbellaria by E.R. Schockaert,I.R. Ball Pdf

Proceedings of the Third International Symposium Held in Diepenbeek, Belgium, August 11-15, 1980

Author : Anonim
Publisher : Academic Press
Page : 382 pages
File Size : 41,8 Mb
Release : 1983-06-23
Category : Science
ISBN : 0080566979

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Advances in Ecological Research by Anonim Pdf

Advances in Ecological Research

Author : Seth Tyler
Publisher : Springer Science & Business Media
Page : 396 pages
File Size : 48,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401127752

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Turbellarian Biology by Seth Tyler Pdf

Turbellarian platyhelminths (or, as they are known now among cladistic systematists, free-living Platyhelminthes) comprise a widely distributed assemblage of lower worms found in marine, freshwater, and even occasionally in terrestrial habitats. The phylum Platyhelminthes may be more widely known for its parasitic members since the major parasitic groups of the tapeworms, flukes, and their relatives are more speciose and have greater impact on everyday human life; but the turbellarians are more diverse and, as inhabitants of virtually any aquatic habitat, are more widespread as well. Many of the lower turbellarians are rather simple in morphology and have served as models for ancestors of the Bilateria, i.e., the bulk of the animal phyla. Others are quite complex organisms, especially in the morphology of their reproductive systems which are highly specialized. The majority are free-living in aquatic habitats but a number of interesting parasitic and commensal species are found scattered among the higher turbellarian taxa. But turbellarians are more than just taxonomic curiosities. They have served as illustrative models in research on a variety of basic life processes. For example, their high capacity for regeneration has made them the subject of a large literature in developmental biology, the occurrence of mixoploidy and other karyological oddities among turbellarians has been important in understanding evolution of the genome, and the fine structure and biochemistry of the nervous system in turbellarians is revealing important principles of the organization of so-called primitive neural systems.

Author : G.D. Grice,M.R. Reeve
Publisher : Springer Science & Business Media
Page : 426 pages
File Size : 42,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461256458

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Marine Mesocosms by G.D. Grice,M.R. Reeve Pdf

Techniques developed for enclosing viable natural planktonic ecosystems pro vided the opportunity for prolonged and detailed investigation of dynamic events within the pelagic system of a known water body. Recent investigations into plankton ecology, using enclosure systems in dif ferent marine environments, are discussed in relation to the data obtained from the Nanaimo, British Columbia, Canada, plastic-sphere experiments of 1960 and 1962. Three types of modern enclosure experiments are recognized: floating systems within nutrient levels maintained or running down, and benthic attached systems. The review largely discusses results from the two kinds of floating systems. Processes at several trophic levels have been investigated in enclosures. This review attempts to draw together details from all experimental systems to emphasize the enclosures' contribution to our understanding of planktonic systems. Enclosures made it possible to examine primary production processes, particularly in relation to inorganic nutrient availability and water-column sta bility. Recent experiments have used the understanding of these processes as a management technique in maintaining different planktonic systems. Relation ships between primary and secondary trophic levels are not always easy to inter pret, since the growth of primary carnivore populations can often determine the survival of zooplankton populations. Nevertheless, the development of co horts of herbivorous zooplankton has been followed in several enclosures, yield ing useful information on development times and production rates. In enclosed systems it is thus possible to directly relate tertiary level production to inorganic nutrient input, and to calculate production rates and exchange efficiencies at several trophic levels.

Author : Mikel A. Becerro
Publisher : Academic Press
Page : 376 pages
File Size : 42,5 Mb
Release : 2012-07-30
Category : Science
ISBN : 9780123942838

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Advances in Sponge Science: Physiology, Chemical and Microbial Diversity, Biotechnology by Mikel A. Becerro Pdf

The authors "have intended to make the forefront of sponge research easily accessible to the nonspecialist, illustrating the state of the art of the field,and presenting current controversial issues. For the specialist, we wanted this monograph to be a handy, valuable update on the most recent advances in sponge science."--p. x

Author : Anonim
Publisher : Academic Press
Page : 376 pages
File Size : 46,7 Mb
Release : 2012-06-26
Category : Technology & Engineering
ISBN : 9780123982728

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Advances in Sponge Science: Physiology, Chemical and Microbial Diversity, Biotechnology by Anonim Pdf

One of two special issues of Advances in Marine Biology focusing on sponge science, it features comprehensive reviews of the latest studies that are advancing our understanding of the fascinating marine phylum Porifera. The selected contributors are internationally renowned researchers in their respective fields and provide a thorough overview of the state-of-the-art of sponge science. This volume will become a reference to marine biologists with interest in benthic ecology and biotic interactions, including symbiosis; chemical and molecular ecology; systematics, phylogeny, and evolution; sponge culture and tissue engineering

Author : Vernon Haris
Publisher : Springer Science & Business Media
Page : 394 pages
File Size : 47,7 Mb
Release : 1990-03-31
Category : Science
ISBN : 0412337606

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Sessile Animals of the Sea Shore by Vernon Haris Pdf

This is a study on the sessile species of the intertidal zone which attempts to portray the intricate interplay of structural, physiological and behavioural adaptations that enable one animal to live where its congeners cannot.

Author : Anonim
Publisher : Academic Press
Page : 313 pages
File Size : 52,6 Mb
Release : 1993-12-07
Category : Medical
ISBN : 9780080580791

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Advances in Parasitology by Anonim Pdf

From the Reviews of Previous Volumes "In reviewing this volume as a whole, one is struck by the quality and scholarship of the various chapters and the obviously efficient editing." -PARASITOLOGY "The policy of the editors of Advances in Parasitology to include reviews from any aspect of parasitology and the high standard of individual papers have resulted in this series of volumes becoming an indispensable source for students, teachers, and research workers." -ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY

Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
Page : 444 pages
File Size : 45,6 Mb
Release : 2003
Category : Technology & Engineering
ISBN : 9251051631

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Advances in Sea Cucumber Aquaculture and Management by Food and Agriculture Organization of the United Nations Pdf

This publication contains current information on the status of world sea cucumber resources and use, focusing on established countries such as China, Ecuador, Indonesia, Japan, Malaysia and the Philippines, as well as relative newcomers to the sector such as Cuba, Egypt, Madagascar and Tanzania. Issues discussed include technical advances in artificial reproduction and farming of selected commercial species; and the report includes the recommendations of a FAO workshop on cucumber aquaculture and management, held in China, in October 2003.