Animalia > Chordata > Mammalia > Sirenia > Trichechidae > Trichechus > Trichechus inunguis

Trichechus inunguis (Amazonian Manatee; Amazon manatee)

Synonyms: Manatus australis; Manatus exunguis; Manatus inunguis; Trichecus inunguis

Wikipedia Abstract

The Amazonian manatee (Trichechus inunguis) is a species of manatee of the order Sirenia. It is found living in the freshwater habitats of the Amazon Basin in Brazil, Peru, Bolivia, Colombia and Ecuador. It has thin, wrinkled skin, and is almost hairless, but has "whiskers" around its mouth. It also has a distinct white breast patch, with fine hairs scattered over its body. It is also known as the Amazon manatee or sea cow.
View Wikipedia Record: Trichechus inunguis

Endangered Species

Status: Vulnerable
View IUCN Record: Trichechus inunguis

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 47.7
EDGE Score: 5.27
View EDGE Record: Trichechus inunguis


Gestation [2]  10 months 28 days
Litter Size [2]  1
Litters / Year [2]  1
Maximum Longevity [2]  40 years
Migration [1]  Intracontinental
Snout to Vent Length [4]  9.118 feet (278 cm)
Water Biome [1]  Lakes and Ponds, Rivers and Streams, Coastal
Weaning [2]  1 year 6 months
Adult Weight [2]  1,058.224 lbs (480.00 kg)
Birth Weight [2]  27.558 lbs (12.50 kg)
Forages - Marine [3]  100 %
Female Maturity [2]  3 years
Male Maturity [2]  3 years

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Mamirau√° Sustainable Development Reserve State Sustainable Development Reserve VI 3260792 Amazonas, Brazil  
Reserva de la Biosfera de Yasuni Biosphere Reserve 4156313 Ecuador  

Prey / Diet

Prey / Diet Overlap


Parasitized by 
Chiorchis fabaceus[6]

Range Map

External References


Attributes / relations provided by
1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
4Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
5Food Plants Eaten by Amazonian Manatees (Trichechus inunguis, Mammalia : Sirenia), Ioni G. Colares and Elton P. Colares, Brazilian Archives of Biology and Technology, Vol. 45, N. 1 : pp. 67 - 72, March, 2002
6Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2023-06-13; License: CC BY 4.0