Download or read book Microfauna marina written by and published by . This book was released on 1995 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microfauna Marina written by Peter Ax and published by . This book was released on 1995 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microfauna marina 11 1997 written by [Anonymus AC02257865] and published by . This book was released on 1997 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microfauna Marina written by and published by . This book was released on 1988 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microfauna Marina written by Peter Ax and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multicellular Animals written by Peter Ax and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: No one can ever have secure knowledge about the gods and creatures, and should anyone hit by chance upon the right thing, he will not know it for sure; that is why everything that we believe to be true is "opinion". XENOPHANES around 500 B.C. (According to ROD 1988, p.85) The goal of phylogenetic systematics (cladistics) is to discover the kinship relations between all organisms on earth and to translate the order we perceive in Nature into an equivalent man-made system. Although the goal is easily formulated, the path is thorny, and the results achieved continue to be imperfect. This is the fate of any science that bases its propositions on the interpretation of histor ical evidence. The diversity found in the millions of species originated as a result of the continuous splitting of biopopulations through time. Combined with this was the emergence of hierarchically linked des cent communities of species. We call the process of origin of descent communities phylogenesis. We do not know, however, the exact course of phylogenesis - we can only formulate hypotheses. The historical evidence at hand consists of the feature patterns of extant species and of extinct species with their combination of original and derived traits which are the result of evolution.
Download or read book The Evolution of Organ Systems written by Andreas Schmidt-Rhaesa and published by Oxford University Press. This book was released on 2007-08-30 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although there are several books on the phylogenetic relationships of animals, this is the first to focus on the consequences of such relationships for the evolution of organs themselves. It provides a summary of evolutionary hypotheses for each of the major organ systems, describing alternative theories in those cases of continuing controversy.
Download or read book Morphology Molecules Evolution and Phylogeny in Polychaeta and Related Taxa written by Universität Osnabrück and published by Springer Science & Business Media. This book was released on 2006-03-30 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, evidence has been accumulated which shows that some of the groups formerly regarded as independent "phyla" such as Pogonophora (now recognized as Siboglinidae), Echiura, Myzostomida and perhaps Sipuncula, are most probably nothing else than greatly modified Annelida. The extreme morphological diversity found especially in Polychaeta displays the plasticity of a simple segmented organisation that basically is nothing else but a serial repetition of identical units. Thus, annelids are highly important to our understanding of fundamental questions about morphological and adaptive diversity, as well as clarifying evolutionary changes and phylogenetic relationships. The book aims to summarize our knowledge on Polychaetes polychaetes and their allies and gives an overview of recent advances gained by studies that employed conventional and modern methods plus, increasingly and importantly, the use of molecular markers and computer-assisted kinship analyses. It also reflects the state of art in polychaete sciences and presents new questions and controversies. As such it will significantly influence the direction of research on Polychaeta and their related taxa.
Download or read book Subterranean Copepoda from Arid Western Australia written by Tomislav Karanovich and published by BRILL. This book was released on 2004-02-01 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Though the subterranean waters are among the most fragile and threatened ecosystems, and are also considered to be rich in biodiversity, there is very little information even on their total biological diversity. Presenting one group of small crustaceans, this book shows how rich and complex subterranean systems may be even in Australian desert regions. This is the first comprehensive study of the subterranean copepods from Australia. It contains descriptions of five new genera and 24 new species. Many representatives of this unique fauna are of ancient origin, dating as far back as Jurassic. Because many questions of the copepod invasions of the freshwater, and their connections with the main climatic changes are addressed, this book will also be useful for a much broader scientific audience.
Download or read book Asian Marine Biology 1984 written by Brian Morton and published by Hong Kong University Press. This book was released on 1984-06-05 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the annual journal of the Marine Biological Association of Hong Kong. It contains papers on marine subjects of interest to all Asian biologists.
Download or read book Origin and Evolution of Metazoan Cell Types written by Sally Leys and published by CRC Press. This book was released on 2021-05-23 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of animal diversity is strongly affected by the origin of novel cell and tissue types and their interactions with each other. Understanding the evolution of cell types will shed light on the evolution of novel structures, and in turn highlight how animals diversified. Several cell types may also have been lost as animals simplified – for example did sponges have nerves and lose them? This book reveals the interplay between gains and losses and provides readers with a better grasp of the evolutionary history of cell types. In addition, the book illustrates how new cell types allow a better understanding permitting the discrimination between convergence and homology.
Download or read book Annelida written by Greg Rouse and published by Oxford University Press. This book was released on 2022-01-14 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annelids (the segmented worms) exist in a remarkably diverse range of mostly marine but also freshwater and terrestrial habitats, varying greatly in size and form. Annelida provides a fully updated and expanded taxonomic reference work which broadens the scope of the classic Polychaetes (OUP, 2001) to encompass wider groups including Clitellata (comprising more than a third of total annelid diversity), Sipuncula, and Thalassematidae (formerly Echiura). It reflects the enormous amount of research on these organisms that has burgeoned since the millennium, principally due to their use as model organisms to address wider and more general evolutionary and ecological questions. Beginning with a clear introduction to the phylum and an outline of annelid taxonomy, this authoritative text describes their collection, the methods to ensure their optimal preservation, and an overview of anatomy with its relevant terminology. The core of the work comprises 77 fully up-to-date taxonomic chapters, informed by anatomy and the latest molecular phylogenomic evidence and carefully organised based on a new, robust phylogenetic hypothesis. Lavishly illustrated throughout with hundreds of previously unpublished high-resolution colour images and SEM micrographs, the sheer beauty and diversity of the annelids is nowhere better presented. Annelida is the definitive reference work for annelid biologists, whilst being of interest to a broader audience of invertebrate zoologists, systematists, and organismal biologists.
Download or read book Oceanography and Marine Biology written by R. N. Gibson and published by CRC Press. This book was released on 2011-06-22 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing interest in oceanography and marine biology and its relevance to global environmental issues continues to create a demand for authoritative reviews summarizing recent research. Now in its 49th volume, Oceanography and Marine Biology has addressed this demand for almost 50 years. This annual review considers the basics of marine research, special topics, and emerging new areas. Regarding the marine sciences as a unified field, the text features contributors who are actively engaged in biological, chemical, geological, and physical aspects of marine science. Including color inserts and extensive reference lists, this series is essential for researchers and students in all fields of marine science.
Download or read book Aquatic Oligochaete Biology VI written by Kathryn A. Coates and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies on diverse aspects of the biology of clitellate works (oligochaetes and leeches) are found in the Proceedings of the most recent International Symposium on Aquatic Oligochaete Biology - from development to population dynamics and from ultrastructure to evolution. The majority of the contributions, which have a very broad geographic scope, are investigations of the biology and ecology of oligochaete works in natural and polluted waters.
Download or read book Annelida written by Günter Purschke and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-02-24 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the second volume in a series of 4 volumes in the Handbook of Zoology series treating morphology, anatomy, reproduction, development, ecology, phylogeny, systematics and taxonomy of polychaetous Annelida. In this volume a comprehensive review of a few more derived higher taxa within Sedentaria are given, namely Sabellida, Opheliida/Capitellida as well as Hrabeiellidae. The former comprise annelids possessing a body divided into two more or less distinct regions or tagmata called thorax and abdomen. Here two groups of families are united, the spioniform and sabelliform polychaetes. Especially Spionidae and Sabellidae are speciose families within this group and represent two of the largest annelid families. These animals live in various types of burrows or tubes and all possess so-called feeding palps. In one group these appendages are differentiated as grooved feeding palps, whereas in the other they may form highly elaborated circular tentacular crowns comprising a number of radioles mostly giving off numerous filamentous pinnulae. Often additionally colourful, the latter are also received the common names "feather-duster worms", "flowers of the sea", "Christmas-tree worms". Opheliida/Capitellida including five families of truly worm-like annelids without appendages represents the contrary. Their members burrow in soft bottom substrates and may be classified as non-selective deposit feeders. Molecular phylogenetic analyses have shown that Echiura or spoon worms, formerly regarded to represent a separate phylum, are members of this group. Last not least Hrabeiellidae is one out of only two families of oligochaete-like terrestrial polychaetes and for this reason received strong scientific interest.
Download or read book Psammonalia written by and published by . This book was released on 2003 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oceanography and Marine Biology An Annual Review Volume 39 written by R. N. Gibson and published by CRC Press. This book was released on 2001-07-19 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in oceanography and marine biology and the relevance of those fields to global environmental issues creates a demand for authoritative reviews that summarize recent research. Oceanography and Marine Biology: an Annual Review has catered to this demand since its foundation, by the late Harold Barnes, more than 35 years ago. It is an annual
