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Biogeography of Bottlenosed Dolphins or Tursiops Truncatus - Research Paper Example

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The paper "Biogeography of Bottlenosed Dolphins or Tursiops Truncatus" states that the major distribution areas of common bottlenose dolphin include the western margins of North Atlantic where the coastal forms occur within a distance of 5km from the land and in bays and estuaries…
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Biogeography of Bottlenosed Dolphins or Tursiops Truncatus
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Download file to see previous pages The large brain size and the vocal learning, on one hand, are the cause of the organism being a major attraction and a source of amusement, and on the other hand, render it vulnerable to noise and chemical pollution resulting from the anthropogenic activity. The conservation strategies directed at habitat preservation of the organism are recommended.
Bottlenose dolphins belong to the order Cetacea, the term derived from Greek word ketos meaning whale. The order includes large aquatic mammals with forelimbs modified into flippers, a horizontally flattened tail, lacking hind limbs and with one or two nostrils. The order includes the suborders Odontoceti (toothed whales) and Mysticeti (baleen whales). Most Dolphins are included in the family Delphinidae, belonging to suborder Odontoceti, including the bottlenose Dolphin or genus Tursiops. The genera Tursiops (derived from Latin word Tursio meaning Dolphin or Dolphin like), has been further classified to include two species on the basis of biochemical and genetic studies: common bottlenose dolphin or T. truncatus and the Indopacific bottlenose dolphin or T. aduncus (Rice, 18). Besides these clearly identified species, several potential species have been described such as an offshore and a coastal form in North Atlantic distinctly identified on the basis of distinctive morphology and ecological markers (Mead & Potter, 165). Thus the accurate classification of this genus remains uncertain and the genus has been proposed to be polyphyletic (LeDuc et al., 619).
Biogeography relates to the study of patterns of the geographical distribution of the organism along with factors determining the specific distribution patterns. The biogeography of an organism provides significant information regarding its evolutionary history and adaptation. Thus biogeography can be considered to include the spatial as well as the temporal distribution of an organism.
The common bottlenose dolphin T.trucatus enjoys worldwide distribution including tropical and temperate, inshore, coastal, shelf and oceanic areas (Reynolds et al., 12), except the polar region, northward of 45◦, though they do occur far as 62◦N7◦W in northern Europe. ...Download file to see next pagesRead More
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