This volume offers contributions from leading experts in the biology of chaetognaths, or arrow worms--voracious carnivores which are exceptionally abundant in all the seas of the world. Until now there has been a lack of easily accessible information on this group, despite the fact that their vast numbers very likely render chaetognaths of major ecological significance in marine planktonic communities. This work is the first comprehensive survey. It deals with all aspects of chaetognath biology, including much recent and unpublished work. Two chapters are devoted to taxonomic relationships, two chapters cover morphology and anatomy, four chapters are concerned with physiology and behavior, three are devoted to ecology, and one chapter provides detailed information about the techniques necessary for studying the organism. The book will interest all marine biologists and zoologists working on plankton, along with invertebrate biologists, systematists, and advanced students of marine biology.

Comprehensive survey of chaetognaths - arrow-worms which are voracious carnivores and exceptionally abundant in all the seas of the world - dealing with all aspects of chaetognath biology, including much recent and unpublished work.

A sequence of elaborate close-up photographs of a diverse range of plankton organisms displays their phosphorescent beauty and translucent colors against contrasting black backgrounds while offering historical and scientific discussions for each depicted species. --Publisher's description.

This textbook is the most concise and readable invertebrates book in terms of detail and pedagogy (other texts do not offer boxed readings, a second color, end of chapter questions, or pronunciation guides). All phyla of invertebrates are covered (comprehensive) with an emphasis on unifying characteristics of each group.

A look into the phenomena of sex and reproduction in all organisms, taking an innovative, unified and comprehensive approach.

This volume contains the proceedings of a Symposium held at the University of Kiel, Germany, from 31 March to 6 April, 1971. The Symposium was organized by the Scientific Committee on Oceanic Research (SCOR) and the Marine Productivity section of the International Biological Programme (IBPIPM) with the assistance of the United Nations Educational, Scientific and Cultural Organization (UNESCO), the Food and Agriculture Organization (FAO), and the International Association of Biological Oceanography (IABO). The aim of the Symposium was to summarize present knowledge of the biology of the Indian Ocean. Twenty-two presentations by invited speakers reviewed the research work carried out during the International Indian Ocean Expedition (lIOE) 1959 -1965, the first cooperative project coordinated by the Intergovernmental Oceanographic Commission (IOC). In addition, reports were presented of postexpedition examination of material and of more recent investigations relevant to the aims of the lIOE. In keeping with the aims of "Ecological Studies", the present volume contains much new information and some synthesis, all directed towards obtaining an understanding of the functioning and organization of the ecosystem of the Indian Ocean. The plan of the Symposium was to present the relevant meteorological, physical, chemical and geological background and to follow this with the various aspects of biological oceanography. Because of the uneven stage of development of the different disciplines, the papers included in this volume vary in their analytical level.

This text provides a concise introduction to the field of animalbiology. Readers discover general principles of evolution, ecology, animal bodyplans, and classification and systematics. After these introductory chapters,readers delve into the biology of all groups of animals. The basic features ofeach group are discussed, along with evolutionary relationships among groupmembers. Chapter highlights include newly discovered features of animals asthey relate to ecology, conservation biology, and value to human society.Regular updates to the phylogenies within the book keep it current.

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.

Animal phylogeny is undergoing a major revolution due to the availability of an ever increasing amount of molecular data, the application of novel methods of phylogenetic reconstruction, and advances in palaeontology and molecular developmental biology.This book revises the major events in animal evolution in the light of these recent advances.

This is the seventh volume of a ten-volume series on The Natural History of the Crustacea. Chapters in this volume synthesize our current understanding of early crustacean development from the egg through the embryonic and larval phase. The first part of this book focuses on the elemental aspects of crustacean embryonic development. The second part of the book provides an account of the larval phase of crustaceans and describes processes that influence the development from hatching to an adult-like juvenile. The third and final part of the book explores ecological interactions during the planktonic phase and how crustacean larvae manage to find food, navigate the dynamic water column, and avoid predators in a medium that offers few refuges.