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 Studies on Two Aberrant Ctenophores Coeloplana and Gastrodes written by and published by . This book was released on 1922 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Two Aberrant Ctenophores Coeloplana and Gastrodes Classic Reprint written by Taku Komai and published by . This book was released on 2015-08-05 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Studies on Two Aberrant Ctenophores, Coeloplana and Gastrodes Although Abbott's works on Coeloplana which appeared in 1902 and 1907 shed a great deal of light on the structure of that interesting animal, yet much has remained to be elucidated, especially as regards its development. In fact, the embryology of the animal has never been studied. As a consequence, there still exists a difference of opinion among authors with respect to the systematic position to be assigned to the animal, some of them regarding it as a transitional form in the stages of evolution from the Ctenophora to the Turbellaria, while others believe its striking resemblance to the latter group to be nothing more than an instance of convergent adaptation. In 1916 I took up the study of Coeloplana with the intention of verifying the accounts given by Abbott and to fill up, if possible, some of the gaps in our knowledge of the animal. Fortunately enough, a fairly plentiful supply of material for my use could be obtained at Misaki. This enabled me to realize my intention in a measure. Especially a fortunate circumstance was that material was securable on which to undertake a study of the development. Some of the results of my researches have already been given in a preliminary report published in 1920 (a). The present paper embodies a fuller account of the results in regard to the anatomy and development of the animal. During the whole course of the study, I was quite unaware of that Krempf also had been engaged in the same research. But, when I saw his work published, I was glad to find that, there was no great discord between our studies, at least as far as important points are concerned. I have been able to refer to his results in the present work, and as to the points of disagreement, I have dealt with them somewhat in detail. The facts about Gastrodes given in the second part of this paper are, so to speak, by-products of the research in Coeloplana. While consulting literature necessary for that work, my attention was attracted to the existence of another peculiar form called Gastrodes which had been referred to the Ctenophora with some doubt, and in the hope of making out the nature of that animal, I was waiting for the opportunity of studying it. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book STUDIES ON 2 ABERRANT CTENOPHO written by Taku B. 1886 Komai and published by Wentworth Press. This book was released on 2016-08-26 with total page 138 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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. 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. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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 Studies on Two Aberrant Ctenophores Coeloplana and Gastrodes Scholar s Choice Edition written by Taku Komai and published by . This book was released on 2015-02-12 with total page 136 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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. 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.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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 Studies on Two Aberrant Ctenophores C loplana and Gastrodes With Nine Plates written by Taku KOMAI and published by . This book was released on 1922 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Two Aberrant Ctenophores Coeloplana and Gastrodes Primary Source Edition written by Taku Komai and published by Nabu Press. This book was released on 2014-02-28 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Download or read book Studies on Two Aberrant Ctenophores C loplana and Gastrodes written by Taku Komai and published by . This book was released on 1922 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ctenophores written by Leonid L. Moroz and published by Springer Nature. This book was released on with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pamphlets on Biology written by and published by . This book was released on 1919 with total page 356 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 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 Problems of Space Biology written by and published by . This book was released on 1971 with total page 920 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 Animal Evolution written by Claus Nielsen and published by Oxford University Press on Demand. This book was released on 2012 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using modern phylogenetic reasoning based on an extensive review of morphology, including ultrastructure, and embryology, each phylum is analysed to ascertain its monophyly and hence its ancestral characters.
Download or read book Acoelomate and Pseudocoelomate Metazoans written by Arthur C. Giese and published by Elsevier. This book was released on 2013-09-17 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproduction of Marine Invertebrates, Volume I: Acoelomate and Pseudocoelomate Metazoans is a collection of papers that deals with the evolution of reproductive mechanisms and behavior in marine invertebrates. This collection starts with terminologies and basic events in marine invertebrate reproduction, including the method of estimating sexual reproductive activity, as well as the timing and patterns involved. The book notes that temperatures, salinities, or food availability should be favorable when the young are produced and when they are developing. One paper shows that the reproductive rhythm is dynamic and in some species is latitude-dependent. Other papers discuss the reproductive cycles of different marine invertebrates such as the Porifera, Cnidaria, Nemertinea, and Nematoda. These papers include topics on asexual reproduction, regeneration, sexual reproduction, and development, and then explain in detail the development of certain invertebrates from their kinorhynchs state (embryonic), to the molting stages, juvenile stages, then to adulthood. This book can be useful for marine biologists, marine ecologists, and students involved in marine biological and physical sciences.
Download or read book Japanese Journal of Zoology written by and published by . This book was released on 1928 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transactions and abstracts.
