The Annelida Polychaeta Volume 2
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The Annelida Polychaeta Volume 2
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Author : Ralph Vary Chamberlin
language : en
Publisher: Theclassics.Us
Release Date : 2013-09
The Annelida Polychaeta Volume 2 written by Ralph Vary Chamberlin and has been published by Theclassics.Us this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09 with categories.
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ... Locality. Gilbert Islands: off Apaiang. Surface. Surface temp. 84 F. 3 January, 1900. Numerous specimens taken at night by electric light. This species in lacking any distinct markings as well as in limited number of somites of the anterior division of the body presents resemblances to A. prolifer O. F. Muller, though numerous differences appear upon closer study. The palpi present uniformly a strongly marked difference in being conspicuously geniculate near the base, the organs distad of the angle extending directly ectad and presenting a very characteristic appearance. The tentacular cirri are less smooth, showing distinct evidence of numerous annuli. The minor tentacles are attached nearer the middle line. The median tentacles and the tentacular cirri are much longer. The number of somites bearing only composite setae is constantly six. The main division of the body wholly lacks pigment, instead of being yellowish. Atjtolytus Planipalpus, sp. nov.1 Plate 20, fig. 4; Plate 21, fig. 1, 2. Epitokous Male (Polybostrichus). The general color is yellow, excepting the blackish eyes and the anterior seminiferous division, which is brown. The cirri, tentacles, and palpi are nearly colorless, somewhat whitish. The body of the type consists of an anterior region of fourteen setigerous somites, in which the setae are all of the coarse composite type and all of which are crowded with masses of spermatozoa, and of a longer posterior region which contains no sexual products and which has long, simple, natatory setae in addition to the coarse composite ones. The posterior region is regenerated posteriorly, the more slender regenerated portion embracing twenty-four somites and the anterior portion thirty-six less crowded somites, making a total...
Annelida
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Author : Günter Purschke
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2020-02-24
Annelida written by Günter Purschke and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-24 with Science categories.
This book is the second volume in a series of 4 volumes in the Handbook of Zoology series treating morphology, anatomy, reproduction, development, ecology, phylogeny, systematics and taxonomy of polychaetous Annelida. In this volume a comprehensive review of a few more derived higher taxa within Sedentaria are given, namely Sabellida, Opheliida/Capitellida as well as Hrabeiellidae. The former comprise annelids possessing a body divided into two more or less distinct regions or tagmata called thorax and abdomen. Here two groups of families are united, the spioniform and sabelliform polychaetes. Especially Spionidae and Sabellidae are speciose families within this group and represent two of the largest annelid families. These animals live in various types of burrows or tubes and all possess so-called feeding palps. In one group these appendages are differentiated as grooved feeding palps, whereas in the other they may form highly elaborated circular tentacular crowns comprising a number of radioles mostly giving off numerous filamentous pinnulae. Often additionally colourful, the latter are also received the common names "feather-duster worms", "flowers of the sea", "Christmas-tree worms". Opheliida/Capitellida including five families of truly worm-like annelids without appendages represents the contrary. Their members burrow in soft bottom substrates and may be classified as non-selective deposit feeders. Molecular phylogenetic analyses have shown that Echiura or spoon worms, formerly regarded to represent a separate phylum, are members of this group. Last not least Hrabeiellidae is one out of only two families of oligochaete-like terrestrial polychaetes and for this reason received strong scientific interest.
The Annelida Polychaeta
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Author : Ralph Vary Chamberlin
language : en
Publisher:
Release Date : 1919
The Annelida Polychaeta written by Ralph Vary Chamberlin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1919 with categories.
Bibliography Of Polychaeta Volume 2
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Author : Charlene D. Long
language : en
Publisher: Charlene Long
Release Date : 1975
Bibliography Of Polychaeta Volume 2 written by Charlene D. Long and has been published by Charlene Long this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.
A Monograph Of The British Annelids Vol Ii Part Ii Polychaeta Syllidae To Arciidae Pages 233 524 Plates Li Lvi Coloured And Lxxi Lxxxvii Uncoloured By William Carmichael Mcintosh M D Edin L R C S E Ll D F R S F R S E F L S C M Z S V P Lit Phil Soc St And V D Etc Professor Of Natural History In The University Of St Andrews Director Of The University Museum And Of The Gatty Marine Laboratory
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Author : William Carmichael McIntosh
language : en
Publisher:
Release Date : 1910
A Monograph Of The British Annelids Vol Ii Part Ii Polychaeta Syllidae To Arciidae Pages 233 524 Plates Li Lvi Coloured And Lxxi Lxxxvii Uncoloured By William Carmichael Mcintosh M D Edin L R C S E Ll D F R S F R S E F L S C M Z S V P Lit Phil Soc St And V D Etc Professor Of Natural History In The University Of St Andrews Director Of The University Museum And Of The Gatty Marine Laboratory written by William Carmichael McIntosh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1910 with Annelida categories.
Pleistoannelida Errantia Ii
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Author : Günter Purschke
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2022-01-19
Pleistoannelida Errantia Ii written by Günter Purschke and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-19 with Science categories.
This book is the fourth in a series of 4 volumes in the Handbook of Zoology series about morphology, anatomy, reproduction, development, ecology, phylogeny and systematics of Annelida. It covers the most typical polychaetes, Phyllodocida, together with certain smaller taxa placed incertae sedis. This volume completes the polychaetous Annelida. Phyllodocida are often vagile, possess well-developed parapodia. Due to their broad and flat cirri these parapodia look like leaves in some taxa and leading to the name of the entire group. Many of its members are macrophagous and often predators. Accordingly most species possess elaborate sense structures such as sensory palps, antennae, eyes and nuchal organs. In certain species the eyes comprise thousands of photoreceptor cells and lenses most likely allowing forming true images. Phyllodocida typically possess an axial muscular pharynx called proboscis functioning as a kind of suction pipe allowing them to swallow and ingest their prey or other food. This pharynx may be armed with cuticular jaws and some species even possess venom glands. The probably most popular and important polychaete model organism, Platynereis dumerilii, belongs to this interesting group. Phyllodocida fall into two to three higher clades comprising about 25 families which represent more than one fourth of the polychaete diversity. One of these families, Syllidae, comprises about 700 valid species of mainly small size and may, therefore, represent one of the most complex and somehow difficult polychaete families on Earth.
Pleistoannelida Sedentaria Ii
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Author : Günter Purschke
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2020-02-24
Pleistoannelida Sedentaria Ii written by Günter Purschke and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-24 with Science categories.
This book is the second volume in a series of 4 volumes in the Handbook of Zoology series treating morphology, anatomy, reproduction, development, ecology, phylogeny, systematics and taxonomy of polychaetous Annelida. In this volume a comprehensive review of a few more derived higher taxa within Sedentaria are given, namely Sabellida, Opheliida/Capitellida as well as Hrabeiellidae. The former comprise annelids possessing a body divided into two more or less distinct regions or tagmata called thorax and abdomen. Here two groups of families are united, the spioniform and sabelliform polychaetes. Especially Spionidae and Sabellidae are speciose families within this group and represent two of the largest annelid families. These animals live in various types of burrows or tubes and all possess so-called feeding palps. In one group these appendages are differentiated as grooved feeding palps, whereas in the other they may form highly elaborated circular tentacular crowns comprising a number of radioles mostly giving off numerous filamentous pinnulae. Often additionally colourful, the latter are also received the common names "feather-duster worms", "flowers of the sea", "Christmas-tree worms". Opheliida/Capitellida including five families of truly worm-like annelids without appendages represents the contrary. Their members burrow in soft bottom substrates and may be classified as non-selective deposit feeders. Molecular phylogenetic analyses have shown that Echiura or spoon worms, formerly regarded to represent a separate phylum, are members of this group. Last not least Hrabeiellidae is one out of only two families of oligochaete-like terrestrial polychaetes and for this reason received strong scientific interest.
Systematics And Diversity Of Annelids
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Author : Maria Capa
language : en
Publisher: MDPI
Release Date : 2021-08-18
Systematics And Diversity Of Annelids written by Maria Capa and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-18 with Science categories.
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.
Polychaetes
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Author : Gregory Rouse
language : en
Publisher: Oxford University Press
Release Date : 2001-10-11
Polychaetes written by Gregory Rouse and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-10-11 with Science categories.
Polychaetes are very common marine worms belonging to the Annelid family that are of interest to marine biologists and invertebrate zoologists. The book presents an understanding of the biology of this group with many illustrations.
Annelida
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Author : Aaron L. Treadwell
language : en
Publisher:
Release Date : 1948
Annelida written by Aaron L. Treadwell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with categories.