By Helene Marsh, Thomas J. O'Shea, John E. Reynolds III III
Dugongs and manatees, the one totally aquatic herbivorous mammals, dwell within the coastal waters, rivers and lakes of greater than eighty subtropical and tropical nations. Symbols of fierce conservation battles, sirenian populations are threatened by way of a number of international difficulties. supplying comparative details on all 4 surviving species, this booklet synthesises the ecological and comparable wisdom pertinent to figuring out the biology and conservation of the sirenia. It offers distinct medical summaries, protecting sirenian feeding biology; replica and inhabitants dynamics; behavioural ecology; habitat necessities and threats to their endured life. Outlining the present conservation prestige of the sirenian taxa, this distinct learn will equip researchers and execs with the medical wisdom required to enhance proactive, precautionary and possible thoughts to preserve dugongs and manatees. Supplementary fabric is out there on-line at: www.cambridge.org/9780521888288.
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Extra resources for Ecology and Conservation of the Sirenia: Dugongs and Manatees
With these he fights, and when taken with a ... .. hook and dragged from the water upon dry land he resists so vehemently that ... .. the cuticle surrounding these arms is often torn and pulled off in pieces; and ... finally with these the female when smitten with the sting of passion, swim- .. .. ming prone upon her back, embraces her covering lover and holds him and ... ... ’ .. Excerpt from Steller’s (1751) observations on form and function of the sea cow .. .. (from the Miller and Miller translation of De Bestiis Marinis) ...
It is covered with a thick hide, more like unto the bark of an ancient oak than ... .. unto the skin of an animal . . black, mangy, wrinkled, rough, hard, and ... tough; it is void of hairs, and almost impervious to an ax . .. From the nape to ... .. the caudal fin the surface is uneven with nothing but circular wrinkles, but ... the sides are exceedingly rough, especially about the head . .. This cuticle .. .. which surrounds the whole body like a crust . . seems given to the animal for ...
Stiff, black fin . .. With a gentle sidewise motion of its tail it swims gently .. forward; with an up-and-down motion of the tail it drives itself violently .. .. forward and struggles to escape from the hands of enemies who are trying ... .. ’ .. .. Excerpt from Steller’s (1751) observations on form and function of the sea cow ... (from the Miller and Miller translation of De Bestiis Marinis) . ..........................................................................................................
Ecology and Conservation of the Sirenia: Dugongs and Manatees by Helene Marsh, Thomas J. O'Shea, John E. Reynolds III III