Essay on Bottlenose Dolphins - 2377 Words

Bottlenose Dolphins This essay is NOT formatted Bottlenose dolphins are among the most vocal of the nonhuman animals and exhibit remarkable development of the sound production and auditory mechanisms. This can be seen in audition, which is shown in the animal’s highly refined echolocation ability, and in tightly organized schools in which they live that are made up by sound communication. In testing the communication skills of dolphins, extensive studies have been done on vocal mimicry, in which the animal imitates computer-generated sounds in order to test motor control in terms of cognitive ability. Language comprehension on the other hand has been tested through labeling of objects, which has proven to be†¦show more content†¦1986). In order to understand the complexity of these highly mechanized acoustic systems, it is necessary to learn the process for which the dolphin hears. In most water-adapted cetaceans, tissue conduction is the primary route of sound conduction to the middle ear. The isolation of the bul lae shows an adaptation for tissue conducted sound. The lower jaw contains fat that is closely associated with the impedance of seawater. The lower jawbone of most odontocetes becomes broadened and quite thin posteriorly, and the fat forms an oval shape that closely corresponds to the area of minimum thickness of the jaw. This fat body leads directly to the bulla, producing a sound path to the ear structures located deep within the head. Paired and single air sacs are scattered throughout the skull, which serve to channel these tissue-conducted sounds (Popov Supin, 1991). Other than this description, there are still more studies needed to determine the function of the middle ear and the type of bone conduction that occurs within the bulla. Due to detailed audiograms, dolphins have been shown to have the ability to detect high-frequency sounds. In an experiment by Johnson (1966) as cited in Schusterman et al. (1986), sine-wave sounds ranging in frequency from 75 Hz to 150 Hz were presented to a bottle-nosed dolphin. The animal was trained to swim in a stationary area within a stall and toShow MoreRelatedThe Bottlenose Dolphin Essay1873 Words   |  8 Pagesthe Tursiops Truncatus dolphin got its name? It got its name because its nose, which is short and stubby. The Tursiops Truncatus coloring is different from other dolphins. Their physical appearance is intriguing and distinctive. They have fascinating family life and eating habits. You can even see bottlenose dolphins in many places in the U.S.A. Their main home is the Pacific Ocean, but they also live in many other places. The coloring of the bottlenose dolphin is unique. It is lightRead MoreA Research Study On Bottlenose Dolphins1188 Words   |  5 PagesBottlenose dolphins are among the most familiar cetaceans, just as whales. 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It must be noted however that Lusseau et al.’s (2003) study was over a period of seven years, where 546 days were spent on the water. Due to the immense differences in field effort, directRead MoreDiverse Mating Strategies Among Different Species1507 Words   |  7 PagesDiverse Mating Strategies Among Different Dolphin Species There are a variety of different mating strategies among different male dolphins species. â€Å"Male mating strategies and forms of competitive interaction among male cetaceans lead to the development of sexually dimorphic features such as prominent postanal humps, reproductive adaptation such as large testis size, and retained bodily scarring caused by interactions with conspecifics.† (Murphy, 2005) Cetacean have been noted to either have aRead MoreThe Research On Marine Mammal Captivity1332 Words   |  6 PagesIntroduction: In recent years, animals in captive environments such as zoos and theme parks have grown more controversial. The literature I have reviewed focuses on a particular group of animals in captivity, cetaceans. Cetaceans include whales, dolphins, and porpoises. The literature includes a range of themes, from their unique level of intelligence to why they may mentally and physically suffer in captive environments. However, it all connects to how and why these animals live and behave differently