The Comparative Embryology Of Sponges

Author : Alexander V. Ereskovsky
Publisher : Springer Science & Business Media
Page : 382 pages
File Size : 50,5 Mb
Release : 2010-03-27
Category : Science
ISBN : 9789048185757

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The Comparative Embryology of Sponges by Alexander V. Ereskovsky Pdf

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.

Author : Arthur Dendy
Publisher : Unknown
Page : 128 pages
File Size : 40,9 Mb
Release : 1800
Category : Sponges
ISBN : OCLC:502052173

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Studies on the Comparative Anatomy of Sponges by Arthur Dendy Pdf

Author : Francis Maitland Balfour
Publisher : Unknown
Page : 558 pages
File Size : 41,9 Mb
Release : 1880
Category : Comparative embryology
ISBN : OXFORD:590049860

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A Treatise on Comparative Embryology by Francis Maitland Balfour Pdf

Author : Aute Richards
Publisher : Unknown
Page : 128 pages
File Size : 40,5 Mb
Release : 2004
Category : Electronic
ISBN : OCLC:1111042604

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Outline of Comparative Embryology by Aute Richards Pdf

Author : T.L. Simpson
Publisher : Springer Science & Business Media
Page : 678 pages
File Size : 52,7 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 : Francis M. Balfour
Publisher : Unknown
Page : 640 pages
File Size : 53,5 Mb
Release : 1885
Category : Electronic
ISBN : PSU:000018619683

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Comparative Embryology by Francis M. Balfour Pdf

Author : Fatma El-Bawab
Publisher : Academic Press
Page : 934 pages
File Size : 51,6 Mb
Release : 2020-01-18
Category : Science
ISBN : 9780128141151

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Invertebrate Embryology and Reproduction by Fatma El-Bawab Pdf

Invertebrate Embryology and Reproduction deals with the practical and theoretical objectives of the descriptive embryology of invertebrates, along with discussions on reproduction in these groups of animals. It explains several morphological and anatomical expressions in the field and covers the embryology of invertebrate animals, starting from the Protozoa, to the Echinodermata, the Protochordate and Tunicates. These groups include economically important aquatic invertebrates, such as crustaceans, as well as medically important invertebrates and economic arthropods. Each chapter is preceded by the taxonomy of the discussed phylum and/or the species to enable the reader to locate the systematic position. Covers phylum definition, general characteristics, classification, reproduction, agametic reproduction, gametic reproduction, spawning, fertilization, development and embryogenesis Includes recent findings in the area, along with detailed figures and photos that illustrate important concepts Brings together difficult-to-obtain research data from the field, not only in Egyptian libraries, but globally, and previously only found through specialized references not widely available Clarifies descriptions with striking photos and electron microscopical studies of different species

Author : Francis Maitland Balfour
Publisher : Unknown
Page : 640 pages
File Size : 41,9 Mb
Release : 1885
Category : Embryology
ISBN : UGA:32108008993738

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A Treatise on Comparative Embryology: Invertebrata by Francis Maitland Balfour Pdf

Author : Mikel Becerro
Publisher : Academic Press
Page : 451 pages
File Size : 43,5 Mb
Release : 2012-06-19
Category : Science
ISBN : 9780123877871

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Advances in Sponge Science: Phylogeny, Systematics, Ecology by Mikel Becerro Pdf

Outgrowth of the [8th] World Sponge Conference held in Girona, Spain, in Sept. 2010. Cf. pref.

Author : Manuel Maldonado,Xavier Turon,Mikel A. Becerro,Maria Jesús Uriz
Publisher : Springer
Page : 343 pages
File Size : 54,6 Mb
Release : 2015-03-21
Category : Science
ISBN : 9789400746886

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Ancient Animals, New Challenges by Manuel Maldonado,Xavier Turon,Mikel A. Becerro,Maria Jesús Uriz Pdf

This book summarizes the latest advances in sponge science through a concise selection of studies presented at the VIII World Sponge Conference. The collection of articles reflects hot, ongoing debates in molecular research, such as the monophyletic versus paraphyletic nature of the sponge group, or the new awareness on pros and cons of standard barcodes and other markers in sponge taxonomy and phylogeny. It also features articles showing how the new sequencing technologies reveal the functional and phylogenetic complexity of the "microbial universe" associated to sponge tissues. The ecological interactions of sponges, the effects of nutrients and pollutants, the variability in reproductive patterns, and the processes generating genotypic and phenotypic variability in sponge populations are covered in several contributions. Zoogeography, population structure and dynamics are also approached with both traditional and molecular tools. The effect of anthropogenic disturbance on the natural environment finds its place in this volume with papers dealing with metal accumulation and the potential role of sponges as biomonitors. Biodiversity data from unexplored tropical and deep sea areas are presented. We hope readers will enjoy the selection of papers, which we believe represent collectively a significant contribution to our current understanding of sponges. Previously published in Hydrobiologia, vol. 687, 2012

Author : Anonim
Publisher : Academic Press
Page : 376 pages
File Size : 45,6 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 : 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 : Ramjee Pallela,Hermann Ehrlich
Publisher : Springer
Page : 381 pages
File Size : 41,9 Mb
Release : 2016-11-17
Category : Science
ISBN : 9788132227946

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Marine Sponges: Chemicobiological and Biomedical Applications by Ramjee Pallela,Hermann Ehrlich Pdf

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.

Author : Zhiyong Li
Publisher : Springer
Page : 570 pages
File Size : 52,7 Mb
Release : 2019-06-07
Category : Science
ISBN : 9789402416121

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Symbiotic Microbiomes of Coral Reefs Sponges and Corals by Zhiyong Li Pdf

This book focuses on the symbiotic microbiomes of invertebrates in coral reefs, especially sponges and corals. It provides in-depth and up-to-date reviews on the microbial structure and diversity, metabolism and function, symbiosis and coevolution, environment and adaption, and bioactive potentials. Meanwhile, the future perspectives will be discussed according to the existing problems and the development trend. This book will be of particular interest to the professionals in marine ecology, marine biotechnology, as well as medicinal chemists and molecular biologists.

Author : Malgorzata Kloc,Jacek Z. Kubiak
Publisher : Springer
Page : 624 pages
File Size : 51,6 Mb
Release : 2018-08-06
Category : Science
ISBN : 9783319924861

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Marine Organisms as Model Systems in Biology and Medicine by Malgorzata Kloc,Jacek Z. Kubiak Pdf

This book highlights the potential advantages of using marine invertebrates like tunicates, echinoderms, sponges and cephalopods as models in both biological and medical research. Bioactive compounds found in marine organisms possess antibacterial, antifungal, anti-diabetic and anti-inflammatory properties, and can affect the immune and nervous systems. Despite substantial research on the medicinal attributes of various marine invertebrates, they are still very much underrepresented in scientific literature: the majority of cell, developmental and evolutionary scientific journals only publish research conducted on a few well-known model systems like Drosophila melanogaster or Xenopus laevis. Addressing that gap, this book introduces readers to new model organisms like starfish or nemertera. By showing their benefits with regard to regeneration, stem cell research and Evo-Devo, the authors provide a cross-sectional view encompassing various disciplines of biological research. As such, this book will not only appeal to scientists currently working on marine organisms, but will also inspire future generations to pursue research of their own.