The Comparative Embryology of Sponges

Author: Alexander V. Ereskovsky

Publisher: Springer Science & Business Media

ISBN: 9789048185757

Category: Science

Page: 329

View: 9307

One of the major questions in the evolution of animals is the transition from unicellular to multicellular organization, which resulted in the emergence of Metazoa through a hypothetical Urmetazoa. The Comparative Embryology of Sponges contains abundant original and literary data on comparative embryology and morphology of the Porifera (Sponges), a group of 'lower Metazoa'. On the basis of this material, original typization of the development of Sponges is given and the problems concerning origin and evolution of Porifera and their ontogenesis are discussed. A morphogenetic interpretation of the body plan development during embryogenesis, metamorphosis and asexual reproduction in Sponges is proposed. Special attention is given to the analysis of characteristic features of the ontogenesis in Porifera. The book pursues three primary goals: 1) generalization of all existing information on individual development of sponges, its classification and a statement according to taxonomical structure of Porifera; 2) revealing of heterogeneity of morphogenesis and peculiarities of ontogeneses in various clades of Porifera, and also their correlations with the organization, both adult sponges, and their larvae; 3) revealing homology of morphogeneses in both Porifera and Eumetazoa, testifying to the general evolutionary roots of multicellular animals, and peculiar features of sponges' morphogeneses and ontogenesis. This book will be of interest to embryologists, zoologists, morphologists and researchers in evolutionary biology.
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Advances in Sponge Science

Phylogeny, Systematics, Ecology

Author: Mikel A. Becerro

Publisher: Academic Press

ISBN: 0123877873

Category: Science

Page: 432

View: 8895

Advances in Marine Biology has been providing in-depth and up-to-date reviews on all aspects of marine biology since 1963 -- over 45 years of outstanding coverage! The series is well-known for both its excellence of reviews and editing. Now edited by Michael Lesser, with an internationally renowned Editorial Board, the serial publishes in-depth and up-to-date content on a wide range of topics that will appeal to postgraduates and researchers in marine biology, fisheries science, ecology, zoology, and biological oceanography. 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
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Marine Sponges: Chemicobiological and Biomedical Applications

Author: Ramjee Pallela,Hermann Ehrlich

Publisher: Springer

ISBN: 8132227948

Category: Science

Page: 381

View: 3651

The main focus of this book entitled is to provide an up-to-date coverage of marine sponges and their significance in the current era. This book is an attempt to compile an outline of marine sponge research to date, with specific detail on these bioactive compounds, and their pharmacological and biomedical applications. The book encompasses twenty chapters covering various topics related to Marine Sponges. Initial couple of chapters deal about the worldwide status of marine sponge research, the recent findings regarding dynamics of sponges, and several interesting research areas, that are believed to be deserving of increased attention. Variety of sponges, their toxicology, metagenomics, pharmaceutical significance and their possible applications in biomedicine has been discussed in detail. The second half of this part includes chapters on chemical ecology of marine sponges followed by the discussion on importance of bioeroding sponges in aquaculture systems. The following four chapters of the book deal majorly with the chemical molecules of marine sponges. In the fifth chapter, marine sponge-associated actinobacteria and their pysicochemical properties have been discussed followed by their bioactive potential. The biological application of marine sponges has been presented in later chapters with the classification of biologically active compounds being explored in detail. The second half of the book presents the vast repertoire of secondary metabolites from marine sponges, which include terpenoids, heterocycles, acetylenic compounds, steroids and nucleosides. Further, the bioactive potential of these compounds has also been discussed. One of the constituent chapter elaborates the bioactive alkaloids from marine sponges namely, pyridoacridine, indole, isoquinolene, piperidene, quinolizidine, steroidal and bromotyrosine alkaloids isolated from them. In the next couple of chapters, important sponge polymers and the anticancer effects of marine sponge compounds have been presented. The most interesting aspect of sponge biology is their use in biomedical arena. An effort has been made in this book, to cover the major constituents of sponges and their biomedical potentials. The major portion of sponge body is composed of collagen and silica and used in tissue engineering as scaffold material. This part of the book compiles chapters delineating the isolation of sponge biomaterials including collagen and their use in medical diagnostics. Overall, this book would be an important read for novice and experts in the field of sponge biology.
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Morphomechanics of Development

Author: Lev V. Beloussov

Publisher: Springer

ISBN: 3319139908

Category: Science

Page: 195

View: 2985

This book outlines a unified theory of embryonic development, assuming morphogenesis to be a multi-level process including self-organizing steps while also obeying general laws. It is shown how molecular mechanisms generate mechanical forces, which in the long run lead to morphological changes. Questions such as how stress-mediated feedback acts at the cellular and supra-cellular levels and how executive and regulatory mechanisms are mutually dependent are addressed, while aspects of collective cell behavior and the morphogenesis of plants are also discussed. The morphomechanical approach employed in the book is based on the general principles of self-organization theory.
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Metchnikoff and the Origins of Immunology

From Metaphor to Theory

Author: Alfred I. Tauber,Leon Chernyak

Publisher: Oxford University Press

ISBN: 9780195345100

Category: Medical

Page: 280

View: 9312

This fascinating intellectual history is the first critical study of the work of Elie Metchnikoff, the founding father of modern immunology. Metchnikoff authored and championed the theory that phagocytic cells actively defend the host body against pathogens and diseased cells. His program developed from comparative embryological studies that sought to establish genealogical relations between species at the dawn of the Darwinian revolution. In this scientific biography, Tauber and Chernyak explore ore Metchnikoff's development as an embryologist, showing how it prepared him to propose his theory of host-pathogen interaction. They discuss the profound impact of Darwin's theory of evolution on Metchnikoff's progress, and the influence of 19th century debates on vitalism, teleology, and mechanism. As a case study of scientific discovery, this work offers lucid insight into the process of creative science and its dependence on cultural and philosophic sources. Immunologists and historians of science and medicine will find it an absorbing and accessible account of a remarkable individual.
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"Modern problems of poriferan biology

proceedings of the first all-Russia meeting of spongiologists, St. Petersburg, February 1996

Author: Alexander V. Ereskovsky,Helmut Keupp,Rolf Kohring

Publisher: N.A

ISBN: N.A

Category: Science

Page: 156

View: 6727

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Science

Author: N.A

Publisher: N.A

ISBN: N.A

Category: Science

Page: N.A

View: 7153

Vols. for 1911-13 contain the Proceedings of the Helminthological Society of Washington, 1st-15th meeting.
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Author: N.A

Publisher: N.A

ISBN: N.A

Category:

Page: N.A

View: 5864

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Die Kalkschwamme

1: Biologie der Kalkschwamme (Calcispongien oder grantien).

Author: Ernst Heinrich Haeckel

Publisher: N.A

ISBN: N.A

Category:

Page: 484

View: 1733

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Kunstformen der Natur

Author: Ernst Haeckel

Publisher: BoD – Books on Demand

ISBN: 3867415773

Category:

Page: 400

View: 2721

"Die Natur erzeugt im ihrem Scho e eine unersch pfliche F lle von wunderbaren Gestalten, durch deren Sch nheit und Mannigfaltigkeit alle vom Menschen geschaffenen Kunstformen weitaus bertroffen werden." Der Naturwissenschaftler Ernst Haeckel stellt in seinem Werk sthetische Formen aus Bereichen der Botanik und der Zoologie zusammen. Zahlreiche Schwarzwei - und Farbabbildungen. Nachdruck der Komplettausgabe von 1904 mit 100 Tafeln und dem "Supplement-Heft" .
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Biosystematik

Author: Guillaume Lecointre,Hervé Le Guyader

Publisher: Springer-Verlag

ISBN: 3540299793

Category: Science

Page: 696

View: 7003

Wussten Sie, dass Sie mit einem Röhrling näher verwandt sind als mit einem Gänseblümchen oder Vögel den Krokodilen näher sind als Eidechsen? In den letzten 30 Jahren sind die Methoden der Klassifikation des Lebens völlig neu überdacht worden. Das Resultat stellt die bisherige Einteilung der mehr als 2 Millionen bekannten Arten auf den Kopf. Das Buch hilft, die organismische Vielfalt zu bewältigen, indem wesentliche Einteilungs- und Ordnungskriterien vorgestellt und bedeutende stammesgeschichtliche Entwicklungslinien diskutiert werden.
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