The Amazonian manatee (Trichechus inunguis) is uniparous and has a slow reproduction cycle due to a long gestation period and long interval between births. The Amazonian manatee is restricted to fresh water. The aims of this study were to define urinary and salivary hormone levels during estrous cycle in Amazonian manatees; and to verify the existence of differences on urinary and salivary reproductive hormones during two different trimesters of the year. It has two axillary mammae. Breeding/Reproduction: Male manatees are sexually mature at the age of around 9-10 years. 1995). All have similar reproduction and life cycles. Seven adult animals (4 males and 3 females), kept at LMA/INPA were analyzed. The largest manatee recorded was a male 2.8m in length. The West Indian manatee is related to the West African manatee, the Amazonian manatee, the dugong, and Steller’s sea cow, which was hunted to extinction in 1768. An Amazonian manatee has endearing whiskers all over its snout. Facts about Manatees, West Indian Manatee, Amazonian Manatee, west African manatee. Manatee, any of three species of large slow aquatic mammals found along tropical and subtropical Atlantic coasts and associated inland waters, including the watersheds of the Amazon and Niger rivers. The manatees are found on the Caribbean in Costa Rica. The manatee’s closest relatives are the elephant and the hyrax (a small, gopher-sized mammal). The Amazon ox manatee is gray and bears a white patch on its chest or several white markings on its chest and abdomen. Dull gray, blackish, or brown in color, all three species have … Manatee Reproduction There are still a lot of unknowns about the reproductive biology of Amazonian manatees due to the difficulty of obtaining fresh material from wild animals. They are also available in the national parks of Costa Rica. A unique feature manatees have amongst all mammals is constant replacement of … There are three species of manatee: the West Indian manatee, the West African manatee, and the Amazonian manatee. Evidence suggests that a manatee has a 6th sense, enabling it to detect changes in pressure through these sensory hairs. Manatee Information, anatomy, feeding, reproduction, habitat, conservation. They are most common in floodplain lakes and channels in white-water river systems with water temperatures ranging from 25°-30°C (77°-86°F). Manatees are believed to have evolved from a wading, plant-eating animal. Its body is covered with fine hairs and its upper and lower lips are covered with thick bristles. Even though protected by law, hunting remains one of the main causes hindering the natural population growth of this species in the wild. 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