Annelida

Author : Greg W. Rouse,Fredrik Pleijel,Ekin Tilic
Publisher : Oxford University Press
Page : 449 pages
File Size : 52,5 Mb
Release : 2022-01-14
Category : Science
ISBN : 9780199692309

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Annelida by Greg W. Rouse,Fredrik Pleijel,Ekin Tilic Pdf

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.

Author : Addison Emery Verrill
Publisher : Unknown
Page : 76 pages
File Size : 53,9 Mb
Release : 1881
Category : Annelida
ISBN : HARVARD:32044072265028

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New England Annelida by Addison Emery Verrill Pdf

Author : Greg Rouse,Fredrik Pleijel,Ekin Tilic
Publisher : Oxford University Press
Page : 496 pages
File Size : 51,7 Mb
Release : 2022-01-14
Category : Science
ISBN : 9780192591623

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Annelida by Greg Rouse,Fredrik Pleijel,Ekin Tilic Pdf

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.

Author : Gerhard Armauer Hansen
Publisher : Unknown
Page : 90 pages
File Size : 55,5 Mb
Release : 1882
Category : Annelida
ISBN : STANFORD:36105042887633

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Annelida by Gerhard Armauer Hansen Pdf

Author : Günter Purschke,Markus Böggemann,Wilfried Westheide
Publisher : Walter de Gruyter GmbH & Co KG
Page : 492 pages
File Size : 48,7 Mb
Release : 2019-03-18
Category : Science
ISBN : 9783110291582

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Annelida by Günter Purschke,Markus Böggemann,Wilfried Westheide Pdf

This book is the first in a series of 4 volumes in the Handbook of Zoology series about morphology, anatomy, reproduction, development, ecology, phylogeny and systematics of Annelida. This first volume covers members of the so-called basal radiation and the first part of Sedentaria. It is supplemented by chapters on the history of annelid research, their fossil record, and an introduction to the phylogeny of annelids and their position in the tree of life. In the latter chapter the history of their systematic is reviewed giving an almost complete picture of systematic-scientific progress especially in the past years which changed our view on annelid phylogeny dramatically. The most basal annelids, lately united as Palaeoannelida, represent two families of aberrant polychaetes formerly often suggested to be highly derived which now give us a fresh look on how the ancestral annelid may have looked like. These lack certain key characters such as nuchal organs and possess rather simple nervous systems which now likely represent primitive character states. In this basal radiation the first taxon of apparently unsegmented and achaetigerous animals is positioned, the Sipuncula. Most likely another group of platyhelminth-like and unsegmented and even chaeta-lees annelids, Lobatocerebridae falls into this basal radiation. The section of Sedentaria starts with Orbiniida, a taxon characterized by elongated, thread-like worms which do not have anterior appendages like palps and comprises several families representing members of the Meiofauna. These minute worms often inhabiting the interstitial spaces in marine sands are suggested to have evolved by progenesis. The second higher taxon is represented by Cirratuliformia comprising nine families of typical sedentary polychaetes each of which showing a remarkable variation of the annelid body plan. Members of this taxon usually exhibit many annelid characters but certain also lack the most typical prostomial appendages, the palps.

Author : Barrie G M Jamieson
Publisher : CRC Press
Page : 698 pages
File Size : 41,7 Mb
Release : 2006-01-03
Category : Science
ISBN : 9781482280159

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Reproductive Biology and Phylogeny of Annelida by Barrie G M Jamieson Pdf

Annelida is a diverse group of animals, commonly referred to as segmented worms and currently comprising around 14000 described species. Found in most marine and freshwater areas, annelids have also successfully occupied many subterranean habitats. This volume documents annelid reproduction in the context of their phylogenetic relationships. It pre

Author : T. J. Pandian
Publisher : CRC Press
Page : 278 pages
File Size : 51,6 Mb
Release : 2019-01-30
Category : Medical
ISBN : 9780429584480

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Reproduction and Development in Annelida by T. J. Pandian Pdf

This book is a concise informative elucidation of all aspects of reproduction and development in annelids covering from arenicola to tubifex. Annelids flourish between 4,900 m depth to 2,000 m altitude; some of them occur in unusual habitats like hydrothermal vents and subterranean aquatic system (stigobionts). A few have no gut and acquire adequate nutrients through osmotrophism and/or engaging symbiotic microbes. In the absence of exoskeleton to escape predation, the 17,000 speciose annelids have explored bewildering modes of reproduction; not surprisingly, 42–47% of them are brooders. With 13,000 species, polychaetes are gonochores but some 207 species of them are hermaphrodites. Clitellates are all hermaphrodites; of them, 76 species are parthenogens, of which 56 are earthworms. Regenerative potency of annelids ranges from an organ to an entire worm from a single ‘seminal’ segment. The head, tail and both together can be regenerated 21, 42 and 20 times, respectively. However, the potency is limited to ~1% of polychaetes and Heterogamatic sex determination is reported to occur only in six polychaete species, although karyotype is known for 83 annelid species. In temperate polychaetes, a dozen neuroendocrines, arising mostly from the ‘brain’ regulates reproductive cycle. A complete chapter devoted to vermiculture, (i) recognizes the fast-growing candidate species, (ii) distinguishes 'layers' from 'brooders', (iii) indicates that the harvest of oligochaetes may reduce the input of nitrogenous fertilizer in the ricefield, and (iv) explores the scope for increasing wealth from waste.

Author : New York (State). Natural History Survey
Publisher : Unknown
Page : 84 pages
File Size : 43,5 Mb
Release : 1888
Category : Electronic
ISBN : UOM:39015061977917

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Extract from Supplement, Containing Descriptions and Illustrations of Pteropoda and Annelida by New York (State). Natural History Survey Pdf

Author : Anonim
Publisher : Unknown
Page : 5 pages
File Size : 50,7 Mb
Release : 1870
Category : Electronic
ISBN : HARVARD:32044107343949

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The Brachiopoda, a Division of Annelida by Anonim Pdf

Author : Harrison Edwin Webster,James E. Benedict
Publisher : Unknown
Page : 76 pages
File Size : 47,8 Mb
Release : 1884
Category : Annelida
ISBN : UOM:39015064546941

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The Annelida Chaetopoda from Provincetown and Wellflett, Massachusetts by Harrison Edwin Webster,James E. Benedict Pdf

Author : Maria Capa,Pat Hutchings
Publisher : MDPI
Page : 520 pages
File Size : 54,9 Mb
Release : 2021-08-18
Category : Science
ISBN : 9783036513904

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Systematics and Diversity of Annelids by Maria Capa,Pat Hutchings Pdf

In this Special Issue, we address the state of the art of the systematics of the main annelid groups and the improvements in the diversity they hold, with special emphasis on the latest discoveries in well-studied areas, expeditions to unsurveyed areas or environments, or the use of novel techniques that allow for the improvement of biodiversity knowledge. We are hoping that this Special Issue will provide a platform facilitating a review of current knowledge on the subject, identifying current research problems, as well as indicating directions and research trends for the future.

Author : T. J. Pandian
Publisher : CRC Press
Page : 508 pages
File Size : 42,7 Mb
Release : 2019-01-30
Category : Medical
ISBN : 9780429582585

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Reproduction and Development in Annelida by T. J. Pandian Pdf

This book is a concise informative elucidation of all aspects of reproduction and development in annelids covering from arenicola to tubifex. Annelids flourish between 4,900 m depth to 2,000 m altitude; some of them occur in unusual habitats like hydrothermal vents and subterranean aquatic system (stigobionts). A few have no gut and acquire adequate nutrients through osmotrophism and/or engaging symbiotic microbes. In the absence of exoskeleton to escape predation, the 17,000 speciose annelids have explored bewildering modes of reproduction; not surprisingly, 42–47% of them are brooders. With 13,000 species, polychaetes are gonochores but some 207 species of them are hermaphrodites. Clitellates are all hermaphrodites; of them, 76 species are parthenogens, of which 56 are earthworms. Regenerative potency of annelids ranges from an organ to an entire worm from a single ‘seminal’ segment. The head, tail and both together can be regenerated 21, 42 and 20 times, respectively. However, the potency is limited to ~1% of polychaetes and Heterogamatic sex determination is reported to occur only in six polychaete species, although karyotype is known for 83 annelid species. In temperate polychaetes, a dozen neuroendocrines, arising mostly from the ‘brain’ regulates reproductive cycle. A complete chapter devoted to vermiculture, (i) recognizes the fast-growing candidate species, (ii) distinguishes 'layers' from 'brooders', (iii) indicates that the harvest of oligochaetes may reduce the input of nitrogenous fertilizer in the ricefield, and (iv) explores the scope for increasing wealth from waste.

Author : Hasko Nesemann,Eike Neubert
Publisher : Springer
Page : 196 pages
File Size : 50,7 Mb
Release : 1999-09-23
Category : Science
ISBN : CORNELL:31924085798860

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Annelida, Clitellata by Hasko Nesemann,Eike Neubert Pdf

The subphylum Clitellata of the phylum Annelida contains several classes of organisms dwelling in freshwater systems. The systematic concepts of these groups are still a matter of discussion at all taxonomic levels involved. It is hoped that the interrelationships of systematic entities within and above the species level will be better understood as additional and more precise data on morphology, anatomy, and genetics become available. The aim of this volume is to present a compilation of valid tax described from the western Palaearctic area, including the fauna of the Egyptian Nile, in order to serve as a fundament for future work. This contribution covers three classes of leeches: the Branchiobdellida, which live as epizoons on freshwater decapods, the small class Acanthobdellea, comprising highly specialised parasites living on freshwater fishes, and finally the class Hirudinea, which contains species commonly known as the "classical" leeches. Standardised descriptions of the morphology of all species are given. Whenever possible, these are amended by data on anatomical details to allow correct identifications. Most of the species are illustrated, many of them for the first time. The keys cover all taxa known from the geographical range under consideration. They are especially constructed to be used by biologists in the field, thus enabling fast access to an unknown species without dissection. Whenever possible, information on biology, ecology and distribution is supplied, although many of these data have to be used very carefully to avoid the hitherto known frequent misinterpretations.

Author : Marcel Florkin,Bradley Titus Scheer
Publisher : Unknown
Page : 576 pages
File Size : 44,9 Mb
Release : 1969
Category : Annelida
ISBN : UCSD:31822000529990

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Annelida, Echiura, and Sipuncula by Marcel Florkin,Bradley Titus Scheer Pdf

Author : Elise E. B. LaDouceur
Publisher : John Wiley & Sons
Page : 354 pages
File Size : 52,7 Mb
Release : 2021-01-08
Category : Medical
ISBN : 9781119507604

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Invertebrate Histology by Elise E. B. LaDouceur Pdf

The first comprehensive reference to invertebrate histology Invertebrate Histology is a groundbreaking text that offers a comprehensive review of histology in invertebrates. Designed for use by anyone studying, diagnosing, or researching invertebrates, the book covers all major taxonomic groups with details of the histologic features, with color photographs and drawings that clearly demonstrate gross anatomy and histology. The authors, who are each experts in the histology of their respective taxa, bring together the most recent information on the topic into a single, complete volume. An accessible resource, each chapter focuses on a single taxonomic group with salient gross and histologic features that are clearly described in the text and augmented with color photographs and greyscale line drawings. The histologic images are from mostly hematoxylin and eosin stained microscopic slides showing various organ systems at high and low magnification. In addition, each chapter provides helpful tips for invertebrate dissection and information on how to process invertebrates for histology. This important book: Presents detailed information on histology of all major groups of invertebrates Offers a user-friendly text that is organized by taxonomic group for easy reference Features high-quality color photographs and drawings, with slides showing histology and gross photographs to demonstrate anatomy Provides details on invertebrate dissection and processing invertebrates for histology Written for veterinary pathologists, biologists, zoologists, students, and other scientists studying these species, Invertebrate Histology offers the most updated information on the topic written by over 20 experts in the field.