Nirupama agrawal (10 Ergebnisse)
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Soft cover. Zustand: New. Zustand des Schutzumschlags: New. 1st Edition. Contents: Introduction. History of Indian work on metacercariae. 1. Group tetracotyle faust, 1918. 2. Group neascus hughes, 1927. 3. Group prohemistomulum Ciurea, 1933. 4. Group diplostomulum hughes, 1929. From the introduction: The developmental stages in…the life cycle of digeneans include a number of larvae viz., miracidium sporocyst redia cercaria and metacercaria. The cercaria develops inside sporocyst or redia. To become infective cercariae undergo a further developmental phase and are known as metacercariae. Family schistosomatidae and Azygiidae are exceptions wherein the cercariae penetrate the skin of the definitive host or ingested directly by definitive host thus without having a metacercarial stage. The fully developed cercaria emerges from snail and swims for sometimes in water. It forms a cyst or leads a free life in an intermediate host before entering the final host. Before the formation of cyst the cercaria sheds its tail. The cyst wall helps the larva to overcome the adverse climatic conditions. During this stage, certain structures of adult worms develop, physiological activities and the metabolic processes continue and thereafter further development proceeds. Mostly the metacercaria resembles its cercaria. The larva prepares itself to cope up with the new environmental conditions in final host. A perusal of Indian literature shows that little attention has been paid by workers on this peculiar but interesting larval form as regards its morphology development physiology and biochemistry. The term mesocercaria is used to describe prolonged cercarial stages which occur in the genus Alaria. The time required for metacercariae to become infective after encystement varies from few minutes to several months.
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Hardcover. Zustand: New. Ichthyology describes all aspects of fish from their classification, behavior, diversity, ecology, habits and uses. In the present book the whole subject matter has been divided into thirty chapters which includes introduction, classification, agnatha, class cyclostomes, super class gnathostomata, class…elasmobranhi, subclass bradyodonti,classosteichtyes, subclass crossopterygii, order dipnoi, body shape and size, tegument, scales, colouration, fin, muscles and locomotion, skeletal system, food and feeding habits and alimentary canal, respiratory system, blood vascular system, swim bladder, weberian ossicles, nervous system, endocrine organ, exrecretory system, reproductive system, parental care, fish migration, special characters and adaptation in fishes.This textbook is primarily intended as a textbook for UG and PG courses of zoology, aquaculture and fisheries of Indian Universities. This publication would fulfill the needs of students, teachers, researchers, extension workers, zoologists, aquaculturists, technocrats, limnologists, aquatic ecologists, fisheries and marine biologists as well as by those who are engaged in commercial exploration of aquaculture and fisheries.
Sprache: Englisch
Verlag: Springer, 2019
Serie: Advances in Natural and Technological Hazards Research, Buch 39 von 41. Buch 39 von 41 - Advances in Natural and Technological Hazards Research
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Taschenbuch. Zustand: Neu. Natural Disasters and Risk Management in Canada | An Introduction | Nirupama Agrawal | Taschenbuch | Advances in Natural and Technological Hazards Research | xix | Englisch | 2019 | Springer | EAN 9789402416411 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelbe…rg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.
Sprache: Englisch
Verlag: Springer Netherlands, Springer Netherlands, 2019
Serie: Advances in Natural and Technological Hazards Research, Buch 39 von 41. Buch 39 von 41 - Advances in Natural and Technological Hazards Research
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Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - These chapters provide valuable and comprehensive information on a variety of hazards, including both scientific and social aspects of disasters. The work introduces the concept of large, medium and small scale hazards, and includes many useful case…studies as well as working examples of theoretical concepts.As readers will acknowledge, today the distinction between natural and technological hazards is becoming blurred and a new concept of NATECH hazards is evolving. For permanent hazards (such as tides, wind waves, coastal erosion and climate change) routine predictions are made, whereas for evanescent hazards (including droughts, sea level rise, and coastal subsidence), monitoring of various parameters is the norm. Only for episodic hazards (for example hurricanes, winter storms, tsunamis, and river floods), early warning systems are used, with varying degrees of success.The book explores how, for certain episodic hazards liketornadoes, landslides, forest fires, snow avalanches, and volcanic eruptions, the early warning systems are still in various stages of development. Readers will gain knowledge of theoretical and practical concepts of risk evaluation which assist in better understanding of disaster dynamics, and readers will become better equipped in quantification of disaster risk and vulnerability. The author explains how risk reduction initiatives, taking into account stakeholders' participation and perception, can provide a roadmap to building resilient communities and cities.This book will be useful not only to practitioners of disaster management but also to research scholars and graduate students. It is highly readable and will appeal more broadly too, to all those who are interested in the very latest thinking on, and expert analysis of, hazards and disasters.
Sprache: Englisch
Verlag: Springer Verlag, 2019
Serie: Advances in Natural and Technological Hazards Research, Buch 39 von 41. Buch 39 von 41 - Advances in Natural and Technological Hazards Research
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Paperback. Zustand: Brand New. reprint edition. 366 pages. 9.25x6.10x0.80 inches. In Stock.
Sprache: Englisch
Verlag: Springer Netherlands, Springer Netherlands, 2018
Serie: Advances in Natural and Technological Hazards Research, Buch 39 von 41. Buch 39 von 41 - Advances in Natural and Technological Hazards Research
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Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - These chapters provide valuable and comprehensive information on a variety of hazards, including both scientific and social aspects of disasters. The work introduces the concept of large, medium and small scale hazards, and includes many useful case studies… as well as working examples of theoretical concepts.As readers will acknowledge, today the distinction between natural and technological hazards is becoming blurred and a new concept of NATECH hazards is evolving. For permanent hazards (such as tides, wind waves, coastal erosion and climate change) routine predictions are made, whereas for evanescent hazards (including droughts, sea level rise, and coastal subsidence), monitoring of various parameters is the norm. Only for episodic hazards (for example hurricanes, winter storms, tsunamis, and river floods), early warning systems are used, with varying degrees of success.The book explores how, for certain episodic hazards liketornadoes, landslides, forest fires, snow avalanches, and volcanic eruptions, the early warning systems are still in various stages of development. Readers will gain knowledge of theoretical and practical concepts of risk evaluation which assist in better understanding of disaster dynamics, and readers will become better equipped in quantification of disaster risk and vulnerability. The author explains how risk reduction initiatives, taking into account stakeholders' participation and perception, can provide a roadmap to building resilient communities and cities.This book will be useful not only to practitioners of disaster management but also to research scholars and graduate students. It is highly readable and will appeal more broadly too, to all those who are interested in the very latest thinking on, and expert analysis of, hazards and disasters.
Sprache: Englisch
Verlag: Springer, 2018
Serie: Advances in Natural and Technological Hazards Research, Buch 39 von 41. Buch 39 von 41 - Advances in Natural and Technological Hazards Research
- Hardcover
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Hardcover. Zustand: Brand New. 366 pages. 9.25x6.25x1.00 inches. In Stock.
Verlag: Zoological Survey of India, 2023
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Hardcover. Zustand: New. Contents: 1. Introduction. 2. History and classification. 3. Methodology. 4. Acknowledgements. 5. References. Studies on larval trematodes began in 18th century. Muller (1773) for the first time coined the term "Cercaria" to describe microscopic animals with tails. It was used as generic name because the… larval stages were considered adult trematodes as no one could suspect the need for a host change to complete life cycle. In early 19th century cercariae were also considered to be independent organisms of unknown taxonomic position. After study of Steenstrup (1842) the cercariae were regarded as larvae which attain sexual maturity after entering into gut of vertebrates. Diesing (1855) still considered them to be adults which later in 1858 he accepted as larval trematodes. With increasing knowledge, their importance in taxonomy was realised. Luhe (1909) made first serious effort to classify them. Our focus on Indian Fauna of Cercaria and Zoological Survey of India has been the lead as afar as basic research in malacology and helminthology in concerned. The two disciplines have grown up also most together. In fact, the thrust that was given to freshwater mollusc studies in the beginning of this century was largely due to the fact that these are intermediate hosts of helminth parasites, namely the flukes or the trematodes.
Verlag: Zoological Survey of India, 2018
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Soft cover. Zustand: New. 1st Edition. Contents: Introduction. Hisotrical review. Class trematoda. 1. Subfamily Bucephalinae Nicoll, 1914. Genus Bucephalus baer, 1826. Genus Bucephalopsis (Diesing, 1855) Yamaguti, 1958. 2. Subfamily Neoprosorhychinae Yamaguti, 1958. Genus Roparhynchus Gupta and Kumari, 1974. 2. Order Fasciolatid…ea szidat, 1936: 1. Suborder Echinostomata szidat, 1939. 1. Superfamily Echinostomatoidea faust, 1929. 1. Family Echinostomatidea poche, 1925: 1. Subfamily Singhiinae Yamaguti, 1958. Genus Singhia Yamaguti, 1958. 2. Superfamily Haploporoidea Nicoll, 1935 emend, Dollfus, 1952 emend. Mehra, 1961. 1. Family Haploporidae Nicoll, 1914. 1. Subfamily Megasoleninae manter, 1935. Genus Hapladena Linton, 1910. 1. Subfamily Waretrematinae belouss, 1954. Genus Carassotrema Park, 1938. Genus Saccoelioides szidat, 1954. Genus Haploporous Looss, 1902. Genus Lecithobotrys Looss, 1902. 2. Suborder Fellodistomata Singh, 1960. 1. Superfamily Fellodistomoidea Mehra, 1963. 1. Family Fellodistomidae Nicoll, 1913. 1. Subfamily Complexobursinae Yamaguri, 1971. Genus Complexobursa Osmarin and Mamaev, 1963. 2. Subfamily Antorchinae Yamaguti, 1958. Genus Faustula Poche, 1926. 1. Subfamily Monascinae Yamaguti, 1958. 3. Suborder Paramphistomata Nicoll, 1914. 1. Superfamily Paramphistomoideda Fischoeder, 1901. 1. Family Paramphistomidae Fischoeder, 1901. 1. Subfamily Cleptodiscinae skrjabin, 1949. Genus Neocladorchis Bhalerao, 1937. 2. Subfamily Heliostomatinae skrjabin, 1949. Genus Helostomatis (Fukui, 1929) Mac Callaum, 1905. 3. Subfamily Dadytrematinae Yamaguti, 1958. Genus orientodiscus Srivastava, 1938. Genus pseudoorientodiscus Agrawal and Sharma, 1991. 4. Subfamily Nicollodiscinae Skrjabin, 1949. Genus Nicollodiscus Srivastava, 1938. 5. Subfamily Caballeroinae Daveraj, 1972. Genus Caballeroia Thapar, 1960. 4. Suborder Opisthorchiata La Rue, 1957. 1. Superfamily Opisthorchioidea faust, 1929 Vogel, 1934. 1. Family Opisthorchiidae Braun, 1901. 1. Subfamily Opisthorchinae Looss, 1899. Genus Opisthorchis Blanchard, 1895. Genus Gomtia Thapar, 1930. Genus Thaparotrema Gupta, 1953. 2. Subfamily Gomtiotreminae Gupta, 1953. Genus Allogomtiotrema (Gomtiotrema Gupta, 1953) Yamaguti, 1958. 2. Family Hetrophyidae Odhner, 1914. 1. Subfamily Haplorchiinae Looss, 1899. Genus Haplorchoides Chen, 1949. 2. Subfamily Polyorchitrematinae Yamaguti, 1958. Genus Polyorchitrema Srivastava, 1939. 3. Family Cryptogonimidae Ciurea, 1933. 5. Suborder Plagiorchiata La Rue, 1957. 6. Family Lepocreadiidae Nicoll, 1934. 7. Family Opecoelidae stunkard, 1931. 8. Family Monorchiidae Odhner, 1911. 9. Family Asymphyllodoriidae. 10. Family Stomylotrematidae poche, 1926. Host parasite list. References.
