Development of the Cetacean Nasal Skull
Development of the Cetacean Nasal Skull

Author: Milan Klima

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 150

ISBN-13: 3642586120

DOWNLOAD EBOOK

Morphogeny of the nasal skull was investigated in 92 embryos of 13 species of Cetacea. Compared to the original nasal capsule of land mammals, the nasal structures of Cetacea show many weighty transformations. As a result, the nostrils are translocated from the tip of the snout to the vertex of the head. Several structures of the embryonic nasal skull remain preserved even in adult cetaceans. The translocation of the nostrils to the highest point of the surfacing body is among the most perfect adaptations of cetaceans to the aquatic life habits. The morphogeny of the nasal skull suggests that all cetaceans are of common origin and form a single monophyletic order. The hitherto usual division of this order into two suborders, Mysticeti and Odontoceti, appears to be unsubstantiated. Rather, at least three closely related superfamilies should be distinguished within the order Cetacea, viz., Balaenopteroidea, Physeteroidea, and Delphinoidea. The results are in a

Embryology of Dolphins
Embryology of Dolphins

Author: Oldrich Sterba

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 152

ISBN-13: 3642572979

DOWNLOAD EBOOK

The rapid development of molecular biology and genetics has led to renewed interest in embryology, comparative embryology, and studies of the relations between ontogeny and phylogeny. In fact, genes have been identified which are involved in the formation of shapes and structures, and it is becoming apparent that their primary morphological expressions are conspicuously similar in different species. The primarily identical shapes do not become diversified until advanced individualization of embryos, and it is here that it is possible to employ the knowledge of comparative embryology, the branch of science engaged in the study of the development and differentiation of tridimensional structures in different animal groups. However, comparative embryology has been neglected during the past decades, as its development has appeared to have been completed. In our opinion, the decreased interest in comparative embryology has been caused by the fact that often the time factor was not or could not be respected. In fact, in the case of embryos of wild animals even their ontogenetic age and sometimes the duration of intrauterine development are unknown.

Atlas of the Anatomy of Dolphins and Whales
Atlas of the Anatomy of Dolphins and Whales

Author: Stefan Huggenberger

Publisher: Academic Press

Published: 2018-11-20

Total Pages: 539

ISBN-13: 0128026367

DOWNLOAD EBOOK

Atlas of the Anatomy of Dolphins and Whales is a detailed, fully illustrated atlas on the anatomy and morphology of toothed and whalebone whales. The book provides basic knowledge on anatomical structures, in particular, soft tissues, and functions as a standalone reference work for dissecting rooms and labs, and for those sampling stranded and by-caught dolphins in the field. As a companion and supplement to Anatomy of Dolphins: Insights into Body Structure and Function, this atlas will be of great interest to the scientific community, including veterinarians and biologists, as a book of reference. With a modern approach to dolphin anatomy and morphology, this atlas provides the extensive knowledge necessary to practitioners and theoretical scientists such as evolutionary biologists. The conceptual clarity, precision, and comprehensive and updated display of the topographical anatomy of the body of cetaceans in the atlas support and illustrate the authors' related work, serving as a comprehensive reference for those who are more specifically interested in the details of the anatomy and morphology of porpoises, dolphins and whales. - Offers a single reference source and useful teaching tool for visualizing the integrated body and its components - Functions as a helpful method for demonstrating the animal's anatomy prior to dissection, and for teaching topographic and comparative anatomy - Provides a unique and authoritative resource that explicitly relates the gross and microscopic anatomy of cetacean organs and tissues - The prenatal development of dolphins is largely achieved

Anatomy of Dolphins
Anatomy of Dolphins

Author: Bruno Cozzi

Publisher: Academic Press

Published: 2016-09-21

Total Pages: 458

ISBN-13: 0124076556

DOWNLOAD EBOOK

The Anatomy of Dolphins: Insights into Body Structure and Function is a precise, detailed, fully illustrated, descriptive, and functionally oriented text on the anatomy and morphology of dolphins. It focuses on a number of delphinid species, with keynotes on important dolphin-like genera, such as the harbor porpoise. It also serves as a useful complement for expanding trends and emphases in molecular biology and genetics. The authors share their life-long expertise on marine mammals in various disciplines. Written as a team rather than being prepared as a collection of separate contributions, the result is a uniform and comprehensive style, giving each of the different topics appropriate space. Many color figures, which use the authors' access to wide collections of unique dolphin and whale material, round out this exceptional offering to the field. - Includes high-quality illustrations, drawings, halftone artwork, photographic documentations, microphotos, and tables detailing dolphin anatomy, function, and morphology - Facilitates education and training of students of all basic research and applied sciences dedicated to marine biology and the medical care of marine mammals - Brings together the current knowledge and information on this topic, including those in obscure past or non-English publications, or scattered in short chapters in volumes - Covers a number of delphinid species and serves as a useful complement for expanding trends in molecular biology and genetics

The Bowhead Whale
The Bowhead Whale

Author: J.C. George

Publisher: Academic Press

Published: 2020-09-11

Total Pages: 669

ISBN-13: 0128189703

DOWNLOAD EBOOK

The Bowhead Whale: Balaena mysticetus: Biology and Human Interactions covers bowhead biology from their anatomy and behavior, to conservation, distribution, ecology and evolution. The book also discusses the biological and physical aspects of the Arctic ecosystem in which these whales live, with careful attention paid to the dramatic changes taking place. A special section of the book describes the interactions of humans with bowheads in past and present, focusing on their importance to Indigenous communities and the challenges regarding entanglement in fishing gear, industrial noise and ship strikes. This volume brings together the knowledge of bowheads in one place for easy reference for scientists that study the species, marine mammal biologists, but, equally important, for everyone who is interested in the Arctic. - Presents the only current book dedicated to this species - Includes short, high-impact chapters that make it possible to review all bowhead biology in one compact volume - Illustrated with never-before published photos of bowheads in their natural environment - Provides a platform for an in-depth understanding of indigenous whaling

Echolocation in Bats and Dolphins
Echolocation in Bats and Dolphins

Author: Jeanette A. Thomas

Publisher: University of Chicago Press

Published: 2004

Total Pages: 636

ISBN-13: 9780226795997

DOWNLOAD EBOOK

Although bats and dolphins live in very different environments, are vastly different in size, and hunt different kinds of prey, both groups have evolved similar sonar systems, known as echolocation, to locate food and navigate the skies and seas. While much research has been conducted over the past thirty years on echolocation in bats and dolphins, this volume is the first to compare what is known about echolocation in each group, to point out what information is missing, and to identify future areas of research. Echolocation in Bats and Dolphins consists of six sections: mechanisms of echolocation signal production; the anatomy and physiology of signal reception and interpretation; performance and cognition; ecological and evolutionary aspects of echolocation mammals; theoretical and methodological topics; and possible echolocation capabilities in other mammals, including shrews, seals, and baleen whales. Animal behaviorists, ecologists, physiologists, and both scientists and engineers who work in the field of bioacoustics will benefit from this book.

Hearing by Whales and Dolphins
Hearing by Whales and Dolphins

Author: Whitlow W.L. Au

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 499

ISBN-13: 1461211506

DOWNLOAD EBOOK

Here, experts in different areas of the field provide an overview of the bioacoustics of whales and dolphins as well as a thorough introduction to the subject for investigators of hearing in other animals. Topics covered include the structure and function of cetacean auditory systems, the unique sound production system of odontocetes, acoustic communication, psychoacoustics, echolocation and models of sound propagation.

Comparative Anatomy of the Gastrointestinal Tract in Eutheria II
Comparative Anatomy of the Gastrointestinal Tract in Eutheria II

Author: Peter Langer

Publisher: Walter de Gruyter GmbH & Co KG

Published: 2017-10-23

Total Pages: 804

ISBN-13: 3110560674

DOWNLOAD EBOOK

This volume of the series Handbook of Zoology deals with the anatomy of the gastrointestinal digestive tract – stomach, small intestine, caecum and colon – in all eutherian orders and suborders. It presents compilations of anatomical studies, as well as an extensive list of references, which makes widely dispersed literature accessible. Introductory sections to orders and suborders give notice to biology, taxonomy, biogeography and food of the respective taxon. It is a characteristic of this book that different sections of the post-oesophageal tract are discussed separately from each other. Informations on form and function of organs of digestion in eutherians are discussed under comparative-anatomical aspects. The variability and diversity of anatomical structures represents the basis of functional differentiations.

Reproductive Biology and Phylogeny of Cetacea: Whales, Porpoises and Dolphins
Reproductive Biology and Phylogeny of Cetacea: Whales, Porpoises and Dolphins

Author: Debra Lee Miller

Publisher: CRC Press

Published: 2016-04-19

Total Pages: 456

ISBN-13: 1439842574

DOWNLOAD EBOOK

The order Cetacea comprises some amazing species, representing some of the most evolved creatures that inhabit this earth. Yet, they also represent a group of species for which much remains unknown. There are over 80 species of cetaceans composed of porpoises, dolphins and whales. This volume represents the latest of published and previously unpubl