Download or read book The Ontogeny of Echolocation in an Atlantic Bottlenose Dolphin Tursiops Truncatus written by Jennifer Leigh Hendry and published by . This book was released on 2002 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ontogeny of Echolocation in the Atlantic Bottlenose Dolphin Tursiops Truncatus written by Jennifer Leigh Hendry and published by . This book was released on 2004 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Possible Maternal Influences on the Ontogeny of Echolocation in Bottlenose Dolphins Tursiops Truncatus written by Karissa Sue Tranel and published by . This book was released on 2006 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transmitting Beam Patterns of the Atlantic Bottlenose Dolphin Tursiops Truncatus written by Tobias J. Lemerande and published by . This book was released on 2002-06-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: In January 2002, time synchronized underwater pictures and echolocation signals of a free-swimming bottlenose dolphin were recorded. More than 80 experimental trial runs were recorded at the Space and Naval Warfare Center's Marine Mammal Facility in San Diego, California. The apparatus recorded 30 underwater images per second and sonar signals up to 400 kHz. Data analysis shows wide transmitting beam patterns at frequencies lower than 135 kHz contain a majority of the energy in the echolocation signal, agreeing with previously documented work. However, further analysis shows significant energy at higher frequencies. Early in the experiment, the dolphin steered narrow high frequency signals and adjusted the energy content in those different frequencies while scanning the target. To emit these high frequency components, the dolphin changed the wave shape of the emitted sound pulse. As the experiment progressed, the animals task became routine and the high frequency signals were noticeably absent until low frequency noise was projected into the water, at which time the high frequencies were again present in the emitted sound pulses. Resultant transmitting beam patterns provide excellent evidence of the presence of high frequency sound emissions, and also indicate how these signals are used during echolocation tasks.
Download or read book The Ontogeny of Whistle Production in Infant Atlantic Bottlenose Dolphins Tursiops Truncatus During the First Thirty Days of Life written by Brittany Leigh Jones and published by . This book was released on 2014 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Bottlenose Dolphin written by Stephen Leatherwood and published by Elsevier. This book was released on 2012-12-02 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of their exposure in marine parks, movies, and television as well as their presence in tropical and warm-temperature waters around the world, bottlenose dolphins are among the most familiar of marine mammals. Since they are relatively easy to obtain and they thrive in captivity, these dolphins have been used in a great variety of studies. Work with the bottlenose has provided insight into the sensory mechanisms, communication systems, energetics, reproduction, anatomy, and other aspects of cetacean biology. This volume presents the most recent biological and behavioral discoveries of bottlenose dolphins from different regions and compares bottlenose dolphins as a group with other species of animals.
Download or read book Echolocation in Bats and Dolphins written by Jeanette A. Thomas and published by University of Chicago Press. This book was released on 2004 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Ontogenetic Changes in the Thermal and Buoyant Properties of Atlantic Bottlenose Dolphin Tursiops Truncatus Blubber written by Robin C. Dunkin and published by . This book was released on 2004 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ontogenetic Allometry and Body Composition of the Common Bottlenose Dolphin Tursiops Truncatus from the US Mid Atlantic written by Sarah Mallette and published by . This book was released on 2013 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combined Stimulus Control of Peak Frequency and Source Level in the Echolocating Dolphin Tursiops Truncatus written by Deborah A. Pawloski and published by . This book was released on 1988 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Past echolocation research demonstrated control over the dolphin's echolocation emissions in a binary (on/off) condition. The dolphin performed a discrimination task while its echolocation output was under stimulus control of an underwater tone. The animal learned to echolocate during the presence of the tone and to remain silent if no tone was given. Mackay used two Atlantic bottlenose dolphin (Tursiops truncatus) to determine the dolphin's capability to control whistle emissions in the 5-16 kHz range. Using automatic feeders activated by specific frequency ranges, Mackay showed that dolphins could control the frequency of their whistles. Recent research revealed behavioral control can also be obtained over the source level of the echolocating dolphin. Moore and Patterson trained a dolphin to perform a detection task while under operant control of its emitted source levels. Dolphin clicks are short duration (10 to 100 microsec) wide band transients. It is thought that the target, to a large extent, dictates the click emission parameters of frequency and amplitude. Past research shows that dolphins control the repetition rate of emitted clicks as a function of target range, but the capability of the dolphin to independently control both the frequency and source level of their clicks has never been demonstrated. Presented at 15th Annual Conference of the International Marine Animal Trainers Association, 26-30 October 1987, New Orleans, Louisiana. Keywords: Marine biosystems; Marine biology. (kt).
Download or read book Definition of the Acoustical Structure of Echolocation Pulse Trains of an Atlantic Bottlenose Dolphin in Captivity written by and published by . This book was released on 1990 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Echolocation capabilities of an Atlantic bottlenose dolphin, Tursiops truncatus, were observed in a target detection experiment. Pulse trains occurring during the echolocation sequence were then analyzed in an effort to determine the animal's average frequency range, choice of center frequency, bandwidth, pulse repetition rate, pulse duration, amplitude, and signal-to- noise-ratio (SNR). The animal was trained to detect a polypropylene ring measuring 14.34 centimeters in diameter. Target ranges of 11.582 meters and 15. 85 meters were used. Signal-to-noise-ratio (SNR) was determined as a function of pool ambient noise and reverberation characteristics at each target range. The animal was observed to be consistent in its performance at the correct response threshold of 75 percent.
Download or read book The Sonar of Dolphins written by Whitlow W.L. Au and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The extraordinary ability of dolphins to echolocate has fascinated scientists and the public since its discovery in the late 1950's. This is the first book to summarize modern research in this area, and presents a broad synthesis of this very interdisciplinary subject. The author is an internationally-recognized expert on dolphin sonar and is thus in a unique position to bring together research on the physiological, mathematical and engineering aspects of the subject. Of interest to auditory researchers, electrical engineers, acoustical physicists, and mammalian physiologists.
Download or read book Dolphin Mysteries written by Kathleen M. Dudzinski and published by Yale University Press. This book was released on 2008-10-14 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dolphins have fascinated humans for millennia, giving rise to an abundance of stories and myths about them, yet the actual details of their lives in the sea have remained elusive. In this enthralling book, Kathleen M. Dudzinski and Toni Frohoff take us into the dolphins' aquatic world to witness firsthand how they live their lives, communicate, and interact with one another and with other species, including people. Kathleen M. Dudzinski and Toni Frohoff are scientists who have collectively dedicated more than 40 years to studying dolphins beneath the ocean's surface, frequently through a close-up underwater lens. Drawing on their own experiences and on up-to-the-minute research, the authors show that dolphins are decidedly not just members of a group but distinct individuals, able to communicate with one another and with humans. Dudzinski and Frohoff introduce a new way of looking at, and listening to, the vocabulary of dolphins in the sea, and they even provide an introductory "dolphin dictionary," listing complex social signals that dolphins use to share information among themselves and with people. Unveiling an intimate and scientifically accurate portrait of dolphins, this book will appeal to everyone who has wanted a closer glimpse into the hearts and minds of these amazing creatures.
Download or read book The Ontogeny of Diving in Bottlenose Dolphins tursiops Truncatus written by Shawn Ranee Noren Kramer and published by . This book was released on 2002 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Bottlenose Dolphin written by John E. Reynolds and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Probably the most comprehensive single piece of work ever done on bottlenose dolphins, the book represents a milestone for all those who are interested in the cetacean. . . . Stands as an essential reference."--Marine Mammal Science "It is hard to imagine a better resource."--Aquatic Mammals "Clear and compelling."--Publishers Weekly "Comprehensive overview of the species, its evolution, place in ancient and modern myth, behavior, ecology, reproduction, and genetics."--Florida Times-Union "A concise overview of a species that has fascinated humans for at least 3,000 years."--Biology Digest "Covers everything from the historical myths about dolphins to their daily lives."--EcoFlorida "This excellent introduction on the biology of the bottlenose dolphin also provides a review of conservation issues and outlines current knowledge of dolphins in general."--Charles W. Potter, National Museum of Natural History "This excellent introduction on the biology of the bottlenose dolphin also provides a review of conservation issues and outlines current knowledge of dolphins in general. . . . for students, professionals, and anyone interested in the bottlenose dolphin."--Charles W. Potter, National Museum of Natural History The Bottlenose Dolphin presents for the first time a comprehensive, colorfully illustrated, and concise overview of a species that has fascinated humans for at least 3,000 years. After reviewing historical myths and legends of the dolphin back to the ancient Greeks and discussing current human attitudes and interactions, the author replaces myths with facts--up-to-date scientific assessment of dolphin evolution, behavior, ecology, morphology, reproduction, and genetics--while also tackling the difficult issues of dolphin conservation and management. Although comprehensive enough to be of great value to professionals, educators, and students, the book is written in a manner that all dolphin lovers will enjoy. Randall Wells's anecdotes interspersed throughout the work offer a first-hand view of dolphin encounters and research based on three decades working with them. Color photographs and nearly 100 black and white illustrations, including many by National Geographic photographer Flip Nicklin, beautifully enhance the text. Readers of The Bottlenose Dolphin will better appreciate what dolphins truly are and do, as well as understand some of the controversies surrounding them. While raising compelling questions, the book provides a wealth of information on a legendary species that is loved and admired by many people. John E. Reynolds, professor of marine science at Eckerd College, St. Petersburg, Florida, is chair of the U.S. Marine Mammal Commission. He has written over 100 articles on marine mammal biology and conservation and is coauthor with Daniel K. Odell of Manatees and Dugongs and coeditor of Biology of Marine Mammals. Randall S. Wells is a behavioral ecologist with the Conservation Biology Department of the Chicago Zoological Society and adjunct associate professor of ocean sciences at the University of California, Santa Cruz. He also serves as director of the Center for Marine Mammal and Sea Turtle Research at Mote Marine Laboratory, Sarasota, Florida, where he conducts the world's longest running study of wild dolphins. Samantha D. Eide, a graduate student at the University of South Florida, is field leader for the Eckerd College Dolphin Project, St. Petersburg, Florida.
Download or read book The Acoustics of Introduction written by Cheyenne Mirage Brady and published by . This book was released on 2015 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vocalizations from dolphins were recorded using a hydrophone on several different occasions: from seven previously-housed dolphins prior to introduction of a new animal and from all eight dolphins together, both on the day of introduction and postintroduction. The vocalizations were categorized by visual inspection of spectrograms using Raven, then totaled and averaged. Total vocalizations appeared to peak during the physical introduction of a new individual to the previously-housed dolphins; however, the rates of vocalization per animal per hour showed that the post-introduction period had the most acoustic communications between individual dolphins. Whistles, chirps (a subcategory of whistles), and unmodulated burst pulses appear to make up the majority of dolphins' communications during a captive introduction, as an identifier for members of the same tank and as a possible aggressive or agonistic display, respectively. In the future, measurements of dolphins' vocalizations in combination with cortisol tests may serve to increase captive dolphins' overall wellbeing by reducing the stress on introduced animals during the introduction process. --Page iv.
Download or read book Atlantic Bottlenose Dolphin Tursiops Truncatus Herd Studies in the Mississippi Sound U S A written by Mobashir A. Solangi and published by . This book was released on 1983 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
