The Phyla Sipuncula and Echiura PDF Download

Author: Alexander Charles Stephen
Publisher: British Museum Press
ISBN:
Category : Science
Languages : en
Pages : 544

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Author: British Museum (Natural History). Department of Zoology. Porifera
Publisher:
ISBN:
Category :
Languages : en
Pages : 528

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Author: Edward B. Cutler
Publisher: Cornell University Press
ISBN: 1501723642
Category : Science
Languages : en
Pages : 474

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The Sipuncula, a group of ocean-dwelling worms related to annelids and mollusks, play a significant role in the bioerosion of coral reefs and are useful indicators of environmental conditions. The 155 species live in a wide variety of marine habitats at all depths, in sand and mud, in burrows in soft rock and dead coral, and inside such protective shelters as mollusk shells. Important food items for fish and invertebrate predators, they also recycle organic wastes and function as bioassay tools for human diseases such as cystic fibrosis and acute cholera. Edward B. Cutler brings together in this volume everything that is known about the entire phylum. An introduction, with practical information about collecting and handling the animals, is followed by Part One, which incorporates new systematic analyses made during the past twenty years and offers illustrated keys to all taxa, replacing the work of A.C. Stephen and S.J. Edmonds. Part Two reviews the past thirty years' work in such areas as ecology, muscular sysetms, blood chemistry, respiration, reproduction, and excretion. Part Three provides a new synthetic perspective on the phylum's zoogeography and evolutionary relationships, both to other phyla and within the phylum. It utilizes information from the fossil record, paleo-oceanographic data, and comparative studies of immunology, physiology, embryology, and anatomy.

Author: Marcel Florkin
Publisher: Elsevier
ISBN: 0323145876
Category : Science
Languages : en
Pages : 565

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Chemical Zoology, Volume IV: Annelida, Echiura, and Sipuncula presents chemical information on zoological significance of Annelida, Echiura, and Sipuncula. This book is organized into 13 chapters that tackle the biological and biochemical aspects of these phyla. The opening chapter describes the comparative anatomy, phylogeny, and classification of Annelida, Echiura, and Sipuncula. The book goes on discussing the biological aspects of these phyla, including nutrition and digestion; respiration and energy metabolism; oxygen transport; and carbohydrate and nitrogen metabolism. This volume also covers these organisms' composition of guanidine compounds and phosphagens, lipids, inorganic components, and pigments. Other chapters deal with the growth and development, luminescence, endocrines, and pharmacologic properties of Annelida, Echiura, and Sipuncula. This book is an invaluable resource for zoologists and biochemists.

Author: James T. Carlton
Publisher: Univ of California Press
ISBN: 0520930436
Category : Science
Languages : en
Pages : 1028

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The Fourth Edition of The Light and Smith Manual continues a sixty-five-year tradition of providing to both students and professionals an indispensable, comprehensive, and authoritative guide to Pacific coast marine invertebrates of coastal waters, rocky shores, sandy beaches, tidal mud flats, salt marshes, and floats and docks. This classic and unparalleled reference has been newly expanded to include all common and many rare species from Point Conception, California, to the Columbia River, one of the most studied areas in the world for marine invertebrates. In addition, although focused on the central and northern California and Oregon coasts, this encyclopedic source is useful for anyone working in North American coastal ecosystems, from Alaska to Mexico. More than one hundred scholars have provided new keys, illustrations, and annotated species lists for over 3,500 species of intertidal and many shallow water marine organisms ranging from protozoans to sea squirts. This expanded volume covers sponges, sea anemones, hydroids, jellyfish, flatworms, polychaetes, amphipods, crabs, insects, snails, clams, chitons, and scores of other important groups. The Fourth Edition also features introductory chapters on marine habitats and biogeography, interstitial marine life, and intertidal parasites, as well as expanded treatments of common planktonic organisms likely to be encountered in near-to-shore shallow waters.

Author: Alexander Charles Stephen
Publisher:
ISBN:
Category : Echuiroidea
Languages : en
Pages : 528

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Author: Thomas Bartolomaeus
Publisher: Springer Science & Business Media
ISBN: 9781402029516
Category : Nature
Languages : en
Pages : 406

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Annelida, mainly consisting of marine Polychaeta and in faunal and partly parasitic Clitellata, is one the most significant metazoan taxa. Its more than 20.000 described species invade nearly all habitats and play a central role in marine benthic systems as well as in terrestrial soil communities. Annelids include all soft-bodied segmented worm-like organisms and have been recognized as a separate "phylum" for almost 200 years. 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.

Author: Andrew L. Lissner
Publisher:
ISBN:
Category : Benthos
Languages : en
Pages : 334

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Author: Darryl L. Felder
Publisher: Texas A&M University Press
ISBN: 1603442693
Category : Nature
Languages : en
Pages : 1405

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This landmark scientific reference for scientists, researchers, and students of marine biology tackles the monumental task of taking a complete biodiversity inventory of the Gulf of Mexico with full biotic and biogeographic information. Presenting a comprehensive summary of knowledge of Gulf biota through 2004, the book includes seventy-seven chapters, which list more than fifteen thousand species in thirty-eight phyla or divisions and were written by 138 authors from seventy-one institutions in fourteen countries.This first volume of Gulf of Mexico Origin, Waters, and Biota, a multivolumed set edited by John W. Tunnell Jr., Darryl L. Felder, and Sylvia A. Earle, provides information on each species' habitat, biology, and geographic range, along with full references and a narrative introduction to the group, which opens each chapter.

Author: Greg W. Rouse
Publisher: Oxford University Press
ISBN: 0199692300
Category : Science
Languages : en
Pages : 449

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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. This text provides. This text begins with an introduction to the phylum and an outline of annelid taxonomy. The book describes their collection and the methods to ensure their optimal preservation, and provides an overview of anatomy with its relevant terminology. It includes the latest molecular phylogenomic evidence and is organised based on a new, robust phylogenetic hypothesis. It looks at groups which include 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.