The origins of selected instances of metamorphosis in Germanic literature are traced from their roots in Ovid's Metamorphoses, grouped roughly on an 'ascending evolutionary scale' (invertebrates, birds, animals, and mermaids). Whilst a broad range of mythological, legendary, fairytale and folktale traditions have played an appreciable part, Ovid's Metamorphoses is still an important comparative analysis and reference point for nineteenth- and twentieth-century German-language narratives of transformations. Metamorphosis is most often used as an index of crisis: an existential crisis of the subject or a crisis in a society's moral, social or cultural values. Specifically selected texts for analysis include Jeremias Gotthelf's Die schwarze Spinne (1842) with the terrifying metamorphoses of Christine into a black spider, the metamorphosis of Gregor Samsa in Kafka's Die Verwandlung (1915), ambiguous metamorphoses in E. T. A. Hoffmann's Der goldne Topf (1814), Hermann Hesse's Piktors Verwandlungen (1925), Der Steppenwolf (1927) and Christoph Ransmayr's Die letzte Welt (1988). Other mythical metamorphoses are examined in texts by Bachmann, Fouqué, Fontane, Goethe, Nietzsche, Nelly Sachs, Thomas Mann and Wagner, and these and many others confirm that metamorphosis is used historically, scientifically, for religious purposes; to highlight identity, sexuality, a dream state, or for metaphoric, metonymic or allegorical reasons.

Presents a collection of critical essays about Kafka's The metamorphosis.

This book provides a comprehensive discussion of the development and evolution of flatfish metamorphosis. The chapters use the tissue model to explain a series of metamorphic events, including eye migration, front bone deformation, dorsal fin elongation and regression, and body depth change, left/right asymmetrical pigmentation, give a hypothesis on the mechanism of eye migration, and the evolutionary origin of left/right eye asymmetry. The book is written by expert who has worked on flatfish metamorphosis over 20 years. It serves as a valuable reference for graduate students and researchers in related fields

This book gathers current data on the two types of fish metamorphoses and their endocrine controls. It will be of interest for fish biologists as well as comparative physiologists and endocrinologists. Metamorphosis is a major developmental phase characterized by morphological and physiological changes. It prepares organisms for a drastic shift in habitat and behavior. Among vertebrates, besides the well-known larval metamorphosis in amphibians, two types of metamorphosis are also described in the life cycle of some fish species. Larval metamorphosis, also called first metamorphosis or true metamorphosis, is encountered in lampreys, representative species of basal vertebrates as well as in some teleost groups, elopomorphs and pleuronectiforms, and possibly also in some other teleost species. Secondary metamorphosis occurs in juveniles of some diadromic migratory teleosts, such as salmons and eels, and compared to larval metamorphosis, involves less drastic morphological changes.

Insect Metamorphosis: From Natural History to Regulation of Development and Evolution explores the origin of metamorphosis, how it evolved, and how it is it regulated. The book discusses insect metamorphosis as a key innovation in insect evolution. With most of the present biodiversity on Earth composed of metamorphosing insects—approximately 1 million species currently described, with another 10-30 million still waiting to be discovered, the book delves into misconceptions and past treatments. In addition, the topic of integrating insect metamorphosis into the theory of evolution by natural selection as noted by Darwin in his On the Origin of Species is also discussed. Users will find this to be a comprehensive and updated review on insect metamorphosis, covering biological, physiological and molecular facets, with an emphasis on evolutionary aspects. Features updated knowledge from the past decade on the mechanisms of action of juvenile hormone, the main doorkeeper of insect metamorphosis Aids researchers in entomology or developmental biology dealing with specialized aspects of metamorphosis Provides applied entomologists with recently updated data, especially on regulation, to better face the problems of pest control and management Gives general evolutionary biologists context on the process of metamorphosis in its larger scope