Download or read book Studies on Two Aberrant Ctenophores written by Taku Komai and published by . This book was released on 1922 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Invertebrate Embryology and Reproduction written by Fatma El-Bawab and published by Academic Press. This book was released on 2020-01-18 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book The Journal of the Linnean Society written by Linnean Society of London and published by . This book was released on 1967 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Animal Evolution written by NATURAL SCIENCES and MATHEMATICS (500) and published by OUP Oxford. This book was released on 2009-08-13 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Animal life, now and over the past half billion years, is incredibly diverse. Describing and understanding the evolution of this diversity of body plans - from vertebrates such as humans and fish to the numerous invertebrate groups including sponges, insects, molluscs, and the many groups of worms - is a major goal of evolutionary biology. In this book, a group of leading researchers adopt a modern, integrated approach to describe how current molecular genetic techniques and disciplines as diverse as palaeontology, embryology, and genomics have been combined, resulting in a dramatic renaissance in the study of animal evolution. The last decade has seen growing interest in evolutionary biology fuelled by a wealth of data from molecular biology. Modern phylogenies integrating evidence from molecules, embryological data, and morphology of living and fossil taxa provide a wide consensus of the major branching patterns of the tree of life; moreover, the links between phenotype and genotype are increasingly well understood. This has resulted in a reliable tree of relationships that has been widely accepted and has spawned numerous new and exciting questions that require a reassessment of the origins and radiation of animal life. The focus of this volume is at the level of major animal groups, the morphological innovations that define them, and the mechanisms of change to their embryology that have resulted in their evolution. Current research themes and future prospects are highlighted including phylogeny reconstruction, comparative developmental biology, the value of different sources of data and the importance of fossils, homology assessment, character evolution, phylogeny of major groups of animals, and genome evolution. These topics are integrated in the light of a 'new animal phylogeny', to provide fresh insights into the patterns and processes of animal evolution. Animal Evolution provides a timely and comprehensive statement of progress in the field for academic researchers requiring an authoritative, balanced and up-to-date overview of the topic. It is also intended for both upper level undergraduate and graduate students taking courses in animal evolution, molecular phylogenetics, evo-devo, comparative genomics and associated disciplines.

Download or read book Journal of Embryology and Experimental Morphology written by and published by . This book was released on 1977 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Adhesive Systems written by Janek Byern and published by Springer Science & Business Media. This book was released on 2011-01-27 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: J. Herbert Waite Like many graduate students before and after me I was There are so many species about which nothing is known, mesmerized by a proposition expressed years earlier by and the curse of not knowing is apathy. Krogh (1929) – namely that “for many problems there is Bioadhesion is the adaptation featured in this book, an animal on which it can be most conveniently studied”. and biology has many adhesive practitioners. Indeed, This opinion became known as the August Krogh Prin- every living organism is adhesively assembled in the ciple and remains much discussed to this day, particu- most exquisite way. Clearly, speci? c adhesion needs to larly among comparative physiologists (Krebs, 1975). be distinguished from the opportunistic variety. I think The words “problems” and “animal” are key because of speci? c adhesion as the adhesion between cells in the they highlight the two fundamental and complementary same tissue, whereas opportunistic adhesion might be the foci of biological research: (1) expertise about an animal adhesion between pathogenic microbes and the urinary (zoo-centric), which is mostly observational and (2) a tract, or between a slug and the garden path. If oppor- mechanistic analysis of some problem in the animal’s life nistic bioadhesion is our theme, then there are still many history or physiology (problem-centric), which is usually practitioners but the subset is somewhat more select than a hypothesis-driven investigation. before.

Download or read book Principles of Organic Evolution written by Arthur Ward Lindsey and published by . This book was released on 1952 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Invertebrate Tree of Life written by Gonzalo Giribet and published by Princeton University Press. This book was released on 2020-03-03 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most up-to-date book on invertebrates, providing a new framework for understanding their place in the tree of life In The Invertebrate Tree of Life, Gonzalo Giribet and Gregory Edgecombe, leading authorities on invertebrate biology and paleontology, utilize phylogenetics to trace the evolution of animals from their origins in the Proterozoic to today. Phylogenetic relationships between and within the major animal groups are based on the latest molecular analyses, which are increasingly genomic in scale and draw on the soundest methods of tree reconstruction. Giribet and Edgecombe evaluate the evolution of animal organ systems, exploring how current debates about phylogenetic relationships affect the ways in which aspects of invertebrate nervous systems, reproductive biology, and other key features are inferred to have developed. The authors review the systematics, natural history, anatomy, development, and fossil records of all major animal groups, employing seminal historical works and cutting-edge research in evolutionary developmental biology, genomics, and advanced imaging techniques. Overall, they provide a synthetic treatment of all animal phyla and discuss their relationships via an integrative approach to invertebrate systematics, anatomy, paleontology, and genomics. With numerous detailed illustrations and phylogenetic trees, The Invertebrate Tree of Life is a must-have reference for biologists and anyone interested in invertebrates, and will be an ideal text for courses in invertebrate biology. A must-have and up-to-date book on invertebrate biology Ideal as both a textbook and reference Suitable for courses in invertebrate biology Richly illustrated with black-and-white and color images and abundant tree diagrams Written by authorities on invertebrate evolution and phylogeny Factors in the latest understanding of animal genomics and original fossil material

Download or read book ANIMAL DIVERSITY written by PANDEY and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The BSc Zoology Series of five volumes will be useful for all undergraduate students of life sciences. The series has been developed to follow a unique test-friendly approach to especially assist undergraduate-level students in exam preparation. feature• Elucidates all the important Cell Organelles, Genetics of Cell Division, Mendel-ism, Sex Determination, Chromosomal Aberrations, Mutation, Modern Concept of Gene, Human Genetics, Cytoplasmic Inheritance, Replication of DNA, Protein Synthesis, Genetic Code, Gene Regulation, Human, Genome Project, Molecular Genetics of Cancer, Immunogentics, Prions, Transoposons, Apoptosis, Genetic Engineering and Genetics • Apposite theory to aid quick revision for examinations. • Offer wide range of chapter-end exercises designed as per undergraduate examinations • Surplus artwork to develop a holistic understanding of concepts

Download or read book Invertebrate Structure and Function written by Ernest J. W. Barrington and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Two Aberrant Ctenophores Coeloplana and Gastrodes written by Taku Komai and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book The Invertebrata written by Lancelot Alexander Borradaile and published by . This book was released on 1948 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ctenophores written by Lisa-ann Gershwin and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Lower Metazoa written by Ellsworth C. Dougherty and published by Univ of California Press. This book was released on with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to the Invertebrates written by Janet Moore and published by Cambridge University Press. This book was released on 2006-09-21 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: So much has to be crammed into today's biology courses that basic information on animal groups and their evolutionary origins is often left out. This is particularly true for the invertebrates. The second edition of Janet Moore's An Introduction to the Invertebrates fills this gap by providing a short updated guide to the invertebrate phyla, looking at their diverse forms, functions and evolutionary relationships. This book first introduces evolution and modern methods of tracing it, then considers the distinctive body plan of each invertebrate phylum showing what has evolved, how the animals live, and how they develop. Boxes introduce physiological mechanisms and development. The final chapter explains uses of molecular evidence and presents an up-to-date view of evolutionary history, giving a more certain definition of the relationships between invertebrates. This user-friendly and well-illustrated introduction will be invaluable for all those studying invertebrates.

Download or read book Invertebrate Zoology Multicolour Edition written by P.S.Verma and published by S. Chand Publishing. This book was released on 2001-01-21 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt: For B.Sc. and B.Sc(hons.) students of all Indian Universities & Also as per UGC Model Curriculum. The multicoloured figures and arrestingly natural photographs effectively complement the standard text matter. The target readers shall highly benefit by correlating the content with the muliticoloured figures and photographs The book has been further upgraded with addition of important questions: long, short, very short and multiple questions in all chapters. A complete comprehensive source for the subject matter of various university examinations.

Download or read book The Origins and Relationships of Lower Invertebrates written by Simon Conway Morris and published by Oxford University Press, USA. This book was released on 1985 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting a broad overview of current trends and recent research, this book discusses such groups as sponges, ctenophores, rotifers, annelids, and pogonophores. The book's assessment of lower invertebrates include investigations of reproduction and larval development relevant to phylogeny, problems of pseudocoelomate evolution, and the fossil record of lower invertebrates.