Pulmonates

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Pulmonates

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Author : Vera Fretter
language : en
Publisher:
Release Date : 1975

Pulmonates written by Vera Fretter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Science categories.

Pulmonates Functional Anatomy And Physiology

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Author : Vera Fretter
language : en
Publisher:
Release Date : 1975

Pulmonates Functional Anatomy And Physiology written by Vera Fretter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Science categories.

Host Parasite Interrelationships Between The Freshwater Pulmonate Biophalaria Pgeifferi And The Trematode Schistisoma Mansoni

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Author :
language : en
Publisher: Brill Archive
Release Date :

Host Parasite Interrelationships Between The Freshwater Pulmonate Biophalaria Pgeifferi And The Trematode Schistisoma Mansoni written by and has been published by Brill Archive this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.

The Colonisation Of Land

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Author : Colin Little
language : en
Publisher: Cambridge University Press
Release Date : 1983-12-15

The Colonisation Of Land written by Colin Little and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983-12-15 with Nature categories.

The book traces the ways in which terrestrial animals have evolved from aquatic ancestors and discusses the means by which they are adapted to life on land. The most important physiological adaptations are those involving salt and water balance, the excretion of nitrogen, reproductive mechanisms and the sense organ and these are given priority. Evidence from fossil history is combined with that from the ecology and physiology of present-day species to assess the probable routes along which various evolutionary lines had moved on to land. Individual chapters are concerned with specific animal groups and emphasis is placed on comparisons of physiological mechanisms between closely related animals before attempting wider generalisations. The book closes with a brief account of the recolonisation of the sea and fresh waters by terrestrial animals.

Physico Chemical Parameters Of Godavari River Waters And The Freshwater Pulmonate I Exustus

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Author : Dr. SRINIVAS RAO BHUPALWAR & Dr. AMJADKHAN V. PATHAN
language : en
Publisher: Ashok Yakkaldevi
Release Date : 2020-10-31

Physico Chemical Parameters Of Godavari River Waters And The Freshwater Pulmonate I Exustus written by Dr. SRINIVAS RAO BHUPALWAR & Dr. AMJADKHAN V. PATHAN and has been published by Ashok Yakkaldevi this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-31 with Art categories.

Water as extraordinary substance, exists in three states as gases, liquid proved important for survivability of life (Simpiet al., 2011). Water quality has direct relation with aquatic productivity (Shrestha and Kazama, 2003). Riverine system comprises both main course and tributaries, carrying the one-way flow of sediment with load of dissolved matter and particulate phases coming from natural and anthropogenic sources (Rani et al. 2011). River also serves for domestic, industrial and agricultural disposal, transportation, getting food resources and for recreational activities (Dhote and Dixit, 2011). Dam and reservoir construction in river courses are booming all over the world for hydropower generation, flood control, irrigation, and water supply.Pollution of a river first affects its chemical quality and then systematically destroys the community disrupting the delicate food web. Diverse uses of the rivers are seriously impaired due to pollution and even the polluters like industry suffer due to increased pollution of the rivers. River pollution has several dimensions and effective monitoring and control of river pollution requires the expertise from various disciplines. Pollution of river is a global problem. In India it is reported that about 70% of the available water is polluted. The chief source of pollution is identified as sewage constituting 84 to 92 percent of the waste water. Industrial waste water comprised 8 to 16 percent. The indiscriminate and large-scale deforestation and over grazing in the watershed areas of river basins have caused soil erosion resulting in considerable silting of dams and shrinkage of river flows. This leads to the flooding of the rivers at the time of excessive rains. The disposal of waste leads to contamination of river and lakes chronically affecting the flora and fauna. According to surveys carried out on selected stretches of important rivers, it has been found that most of the rivers are grossly polluted. The domestic sewage discharged from a population of about 2 million gives rise to numerous water-borne diseases like typhoid, cholera, dysentery, poliomyelitis and cysticercosis, thereby affecting the human health and deterioration of the water quality.

Ecology

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Author : W. D. Russell-Hunter
language : en
Publisher: Elsevier
Release Date : 2013-09-24

Ecology written by W. D. Russell-Hunter and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-24 with Science categories.

The Mollusca, Volume 6: Ecology provides an overview of the state of knowledge in molluscan ecology. It is part of a multivolume treatise that covers the fields of biochemistry, physiology, neurobiology, reproduction and development, evolution, ecology, medical aspects, and structure. The Mollusca is intended to serve a range of disciplines: biological, biochemical, paleontological, and medical. As a source of information on the current status of molluscan research, it should prove useful to researchers of the Mollusca and other phyla, as well as to teachers and qualified graduate students. The book contains 15 chapters, arranged into three levels of ecological perspective: (a) distributional studies; (b) physiological ecology and bioenergetics; and (c) population genetics and dynamics. A discussion of the planetary distribution of and ecological constraints upon the mollusca is followed by separate chapters on the life styles and distribution of mollusks on the deep-sea bottom, in mangroves, and on coral reefs; and the trophic and reproductive ecology of those intrinsically fascinating molluscan groups—the nudibranchs and cephalopods. Subsequent chapters present physiological ecology in land snails and in freshwater bivalves, prosobranchs, and pulmonates, with a survey of the techniques of actuarial bioenergetics as applied to nonmarine molluscs. Other chapters cover population dynamics and biology in an introduced pest species, population genetics of marine molluscs, ecogenetics of land snails, and life-cycle pattems throughout the major molluscan taxa.

Sea Snails

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Author : Joseph Heller
language : en
Publisher: Springer
Release Date : 2015-06-16

Sea Snails written by Joseph Heller and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-16 with Science categories.

This richly illustrated book presents the diversity and natural history of sea snail groups. By integrating aspects of morphology, ecology, evolution and behaviour, it describes how each group copes with problems of defence, locomotion, nutrition, reproduction and embryonic development. First come general characteristics of the Mollusca, to which snails belong; and next, characteristics by which snails (Gastropoda) differ from other molluscs. Then a broad, panoramic view of all major sea snail groups, from the primitive to the more advanced, is presented, including both the more abundant and some remote ones of special interest. In detailing primitive sea snails, first limpets (Patellogastropoda) are described, followed by brush snails (Vetigastropoda: top-shells, turbans and allies) and nerites (Neritimorpha), a small group with remarkably high variation in shell colour and in habitats. In looking at advanced-snails (Caenogastropoda), it details the herbivorous grazers and filter-feeders and the many voracious predators, some which use venomous darts. The book also covers sea slugs (Opisthobranchia), which have shifted from mechanical to chemical defence; some are herbivores, some use their food to harness solar energy, others are predators that gain stinging cells and poisonous compounds from their food. In addition, readers will learn about aspects of sea snails in human culture, including use as sacred artefacts and objects of magic and money, as a source of the royal and sacred dyes of purple and blue and as holy ceremonial trumpets. The text, in which scientific terms are accompanied by parallel common ones, is accompanied by over 200 illustrations (mostly in colour). This comprehensive, insightful portrait of sea snails will appeal to marine biologists, zoology lecturers and students, biology teachers, field-school instructors, nature reserve wardens, amateur naturalists, as well as to lecturers and learners of human culture.

Ecology And Classification Of North American Freshwater Invertebrates

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Author : James H. Thorp
language : en
Publisher: Academic Press
Release Date : 2010

Ecology And Classification Of North American Freshwater Invertebrates written by James H. Thorp and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Nature categories.

"The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada. This text serves as an authoritative single source for a broad coverage of the anatomy, physiology, ecology, and phylogeny of all major groups of invertebrates in inland waters of North America, north of Mexico." --Book Jacket.

Thorp And Covich S Freshwater Invertebrates

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Author : James H. Thorp
language : en
Publisher: Elsevier
Release Date : 2014-09-06

Thorp And Covich S Freshwater Invertebrates written by James H. Thorp and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-06 with Science categories.

Readers familiar with the first three editions of Ecology and Classification of North American Freshwater Invertebrates (edited by J.H. Thorp and A.P. Covich) will welcome the comprehensive revision and expansion of that trusted professional reference manual and educational textbook from a single North American tome into a developing multi-volume series covering inland water invertebrates of the world. The series entitled Thorp and Covich's Freshwater Invertebrates (edited by J.H. Thorp) begins with the current Volume I: Ecology and General Biology (edited by J.H. Thorp and D.C. Rogers), which is designed as a companion volume for the remaining books in the series. Those following volumes provide taxonomic coverage for specific zoogeographic regions of the world, starting with Keys to Nearctic Fauna (Vol. II) and Keys to Palaearctic Fauna (Vol. III). Volume I maintains the ecological and general biological focus of the previous editions but now expands coverage globally in all chapters, includes more taxonomic groups (e.g., chapters on individual insect orders), and covers additional functional topics such as invasive species, economic impacts, and functional ecology. As in previous editions, the 4th edition of Ecology and Classification of North American Freshwater Invertebrates is designed for use by professionals in universities, government agencies, and private companies as well as by undergraduate and graduate students. - Global coverage of aquatic invertebrate ecology - Discussions on invertebrate ecology, phylogeny, and general biology written by international experts for each group - Separate chapters on invasive species and economic impacts and uses of invertebrates - Eight additional chapters on insect orders and a chapter on freshwater millipedes - Four new chapters on collecting and culturing techniques, ecology of invasive species, economic impacts, and ecological function of invertebrates - Overall expansion of ecology and general biology and a shift of the even more detailed taxonomic keys to other volumes in the projected 9-volume series - Identification keys to lower taxonomic levels

Text Book Of The Embryology Of Invertebrates Amphineura Lamellibranchia Solenoconcha Gastropoda Cephalopoda Tunicata Cephalochorda

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Author : Eugen Korschelt
language : en
Publisher:
Release Date : 1900

Text Book Of The Embryology Of Invertebrates Amphineura Lamellibranchia Solenoconcha Gastropoda Cephalopoda Tunicata Cephalochorda written by Eugen Korschelt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1900 with Invertebrates categories.