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| Author | : John N.A. Hooper |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 1779 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 1461507472 |
Download Systema Porifera Book in PDF, ePub and Kindle
Research whilst compiling this book has uncovered a fauna about twice the size as that previously published in the literature and consequently Systema Porifera revises and stabilizes the systematics of the phylum to accommodate this new knowledge in a contemporary framework. Practical tools (key illustrations, descriptions of character) are provided to facilitate the assignment of approximately 680 extant and 100 fossil genera. Systema Porifera is unique making sponge taxonomy widely available at the practical level of classification (genera, families, order). It is a taxonomic revision of sponges and spongiomorphis (such as sphinctozoans and archaeocyathans) based on re-evaluation of type materials and evidence. It is also a practical guide to sponge identification providing descriptions and illustrations of characters and interpretation of their importance to systematics. Systema Porifera addresses many long standing nomenclatural problems and provides a sound baseline for future debate on sponges and their place in time and space. Systema Porifera describes 3 classes, 7 subclasses, 24 orders, 127 families and 682 valid genera of extant sponges (with over 1600 nominal generic names and an additional 500 invalid names treated). Treatment of the fossil fauna is less comprehensive or critical, although 6 classes, 30 orders, 245 families and 998 fossil genera are mentioned. Keys to all recent and many fossil taxa are provided.
| Author | : Werner E. G. Müller |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 273 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 3642555195 |
Download Sponges (Porifera) Book in PDF, ePub and Kindle
Sponges (phylum Porifera) are known to be very rich sources for bioactive compounds, mainly secondary metabolites. Main efforts are devoted to cell- and mariculture of sponges to assure a sustainable exploitation of bioactive compounds from biological starting material. These activities are flanked by improved technologies to cultivate bacteria and fungi which are associated with the sponges. It is the hope that by elucidating the strategies of interaction between microorganisms and their host (sponge), by modern cell and molecular biological methods, a more comprehensive cultivation of the symbiotic organisms will be possible. The next step in the transfer of knowledge to biotechnological applications is the isolation, characterization and structural determination of the bioactive compounds by sophisticated chemical approaches.
| Author | : Jean Vacelet |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 331 |
| Release | : 2013-06-29 |
| Genre | : Science |
| ISBN | : 3642708927 |
Download Taxonomy of Porifera Book in PDF, ePub and Kindle
Although sponges are one of the major components of littoral ecosystems, their systematics obviously lags behind that of the majority of other groups of marine invertebrates. Also the evolutionary trends in these most primitive of the Metazoans are poorly understood. The confused state of their taxonomy and the difficulties with their identification prevent their use in ecological studies. The emphasis of interest presently seems to have shifted towards chemistry, but many of the hundreds of interesting chemicals recently described in sponges pro bably have been found in mistakenly or imprecisely identified animals. This situ ation will become worse in the next few years, when a number of experts will retire and will not be replaced by new ones, owing to the difficulties that the science of systematics is facing in most countries - as exemplified during this meeting by an informal discussion on the endangered future of European Museums. Under these circumstances, it is the responsability of present sponge taxono mists to leave a less confused state and tools such as simple fauna or computerized data bases to generations following. These tools do not exist even in one of the best studied areas, the North-Eastern Atlantic (including the Mediterranean Sea).
| Author | : Narayan Changder |
| Publisher | : CHANGDER OUTLINE |
| Total Pages | : 138 |
| Release | : 2024-03-18 |
| Genre | : Science |
| ISBN | : |
Download PORIFERA Book in PDF, ePub and Kindle
Dive into the intriguing world of poriferans with 'Porifera: MCQs for Marine Biology Enthusiasts.' This comprehensive collection of multiple-choice questions is tailored for enthusiasts and aspiring marine biologists, offering an immersive journey through the diverse and fascinating phylum of Porifera. From understanding their unique anatomy and ecological roles to exploring their filter-feeding mechanisms and symbiotic relationships, embark on a captivating exploration of these remarkable marine organisms. Whether you're a student delving into marine biology or a curious explorer fascinated by the wonders of the ocean, these quizzes provide a stimulating and educational experience. Immerse yourself in the diversity of poriferans and deepen your understanding of their importance in marine ecosystems and scientific research with this essential resource.
| Author | : Alexander V. Ereskovsky |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 382 |
| Release | : 2010-03-27 |
| Genre | : Science |
| ISBN | : 9048185750 |
Download The Comparative Embryology of Sponges Book in PDF, ePub and Kindle
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 | : Douglas Grant Smith |
| Publisher | : John Wiley & Sons |
| Total Pages | : 672 |
| Release | : 2001-08-07 |
| Genre | : Science |
| ISBN | : 9780471358374 |
Download Pennak's Freshwater Invertebrates of the United States Book in PDF, ePub and Kindle
Need-to-know information on the classification and identificationof aquatic invertebrates This Fourth Edition of the standard reference used by generationsof professionals and students is the source for authoritativeinformation on the natural history, ecology, and taxonomy offree-living American freshwater invertebrates. Completely revisedand updated, this professional field guide features a wealth of newknowledge on invertebrate animal phyla covered in the previousedition as well as fully modified sections on the preparation ofmaterials. Other important features of Pennak's Freshwater Invertebrates ofthe United States, Fourth Edition include: * Current taxonomical arrangements of all freshwater invertebrateanimals, excluding insects * Improved graphical treatments and keys to identification, severalprovided by specialists * Photographs and color plates to aid identification * More than 300 line drawings, many new to this edition * Taxonomic keys carried uniformly to genus level in all but twophyla, with frequent references to species Pennak's Freshwater Invertebrates of the United States, FourthEdition is an indispensable resource for biologists, ecologists,graduate students, and anyone who needs to acquire the thoroughknowledge of aquatic invertebrates that is essential tounderstanding the community structure of freshwater environments.
| Author | : Tim Williams |
| Publisher | : |
| Total Pages | : 384 |
| Release | : 2008-01-01 |
| Genre | : Reference |
| ISBN | : 9781847994646 |
Download A Check List and Synonym Key for the Phylum Porifera Book in PDF, ePub and Kindle
Sponges are an ancient group of invertebrate animals whose basic body plan has remained unchanged for millions of years. There are no distinct organs or tissues, digestion is intracellular with excretion and respiration being by diffusion. The classification of sponges presents many problems because they share very few characteristics with other animals. Some zoologists consider them to be outside the line of evolution which led to other animals, the metazoans. Consequently, sponges may be labeled as parazoans. This essential reference provides a complete list of all the known species of sponges (up to the end of 2007), along with a key to their synonyms. At the front of the book there is an outline classification to guide you to the location of unfamiliar species, followed by a synopsis of the phylum. This is followed by the checklist and synonym key. At the end of the book is an outline classification of the animal kingdom, and a brief bibliography.
| Author | : Bhamrah & Juneja |
| Publisher | : |
| Total Pages | : 132 |
| Release | : 2001-01-01 |
| Genre | : |
| ISBN | : 9788126106745 |
Download An Introduction To Porifera (2Nd Rev. Edn.) Book in PDF, ePub and Kindle
An Introduction To Porifera Is The Second Revised And Enlarged Edition Of The Book. Sponges Which Constitute Phylum Porifera Are The Most Primitive Of The Multicellular Animals. All The Members Of The Phylum Are Sessile And Exhibit Little Detectable Movement. The Book Has Been Designed To Approach The Morphology, Anatomy, Physiology And Development Of Selected Type In A Simple And Lucid Style. According To The Scheme Of Treatment The Important Animal Types Of The Phylum Have Been Dealt With First, And Effort Have Been Made To Present Their Elaborate And Uptodate Account. General Characters And Classification And Brief Description Of Other Important Types Of The Phylum Have Also Been Dealt With Complete, Authentic And Uptodate Account. Further Separate Chapters On Topics Of Significance And General Interest Pertaining To The Phylum Have Also Been Added To Make The Treatment More Elaborate.
| Author | : John N.A. Hooper |
| Publisher | : Springer |
| Total Pages | : 1707 |
| Release | : 2004-09-30 |
| Genre | : Science |
| ISBN | : 9780306472602 |
Download Systema Porifera Book in PDF, ePub and Kindle
Research whilst compiling this book has uncovered a fauna about twice the size as that previously published in the literature and consequently Systema Porifera revises and stabilizes the systematics of the phylum to accommodate this new knowledge in a contemporary framework. Practical tools (key illustrations, descriptions of character) are provided to facilitate the assignment of approximately 680 extant and 100 fossil genera. Systema Porifera is unique making sponge taxonomy widely available at the practical level of classification (genera, families, order). It is a taxonomic revision of sponges and spongiomorphis (such as sphinctozoans and archaeocyathans) based on re-evaluation of type materials and evidence. It is also a practical guide to sponge identification providing descriptions and illustrations of characters and interpretation of their importance to systematics. Systema Porifera addresses many long standing nomenclatural problems and provides a sound baseline for future debate on sponges and their place in time and space. Systema Porifera describes 3 classes, 7 subclasses, 24 orders, 127 families and 682 valid genera of extant sponges (with over 1600 nominal generic names and an additional 500 invalid names treated). Treatment of the fossil fauna is less comprehensive or critical, although 6 classes, 30 orders, 245 families and 998 fossil genera are mentioned. Keys to all recent and many fossil taxa are provided.
| Author | : Sarah Bowen |
| Publisher | : Princeton University Press |
| Total Pages | : 200 |
| Release | : 2018-07-09 |
| Genre | : Nature |
| ISBN | : 0995567387 |
Download Sea Squirts and Sea Sponges of Britain and Ireland Book in PDF, ePub and Kindle
Sea squirts and sponges are found in most seafloor habitats around the coasts of Britain and Ireland. Despite being the dominant life forms in many areas, these two groups of under-recorded marine animals are often confused with one another, and most divers and snorkellers can recognise and name very few species. In fact, around 500 species of Ascidiacea (sea squirts) and Porifera (sponges) have been described so far in British and Irish seas, corresponding to over 4% of the world’s total. This book is recommended reading for anyone who wants to identify and discover more about these fascinating and diverse animals. Rather than relying on the characteristics of preserved specimens, this guide uses marine photography and detailed underwater observations to concentrate on in situ features, allowing you to record species without collecting them. Most sea squirts found in Britain and Ireland’s shallow waters are included, together with the most easily recognised sponges. Whether you are a student, a diver, a rockpooler or simply an enthusiast, this is an essential companion. ● Over 115 species described in detail with in situ photographs to help with underwater recognition ● Information on size, depth, habitat and distribution ● Key distinguishing features and areas of confusion in identification highlighted ● Details of body structure, life histories, digestive and reproductive processes ● Information about predators, interactions between species, non-native and problem invasive species
