Behavior and habitat use of released rehabilitated Amazonian manatees in Peru

  • Published source details Landeo-Yauri S.S., Castelblanco-Martínez N. & Williams M. (2017) Behavior and habitat use of released rehabilitated Amazonian manatees in Peru. Latin American Journal of Aquatic Mammals, 12, 17-27.


This study is summarised as evidence for the following.

Action Category

Rehabilitate and release injured, sick or weak marine and freshwater mammals

Action Link
Marine and Freshwater Mammal Conservation
  1. Rehabilitate and release injured, sick or weak marine and freshwater mammals

    A study in 2011 at a freshwater site in El Dorado Lake, Pacaya Samiria National Reserve, Peru (Landeo-Yauri et al. 2017) found that three rehabilitated female Amazonian manatees Trichechus inunguis that were released into the wild survived for at least 3–5 months, and two rehabilitated male manatees dispersed away from the release site. Three rehabilitated female manatees were tracked for 91–161 days after release and were found to use appropriate habitats at the release site (areas with floating vegetation). Contact was lost with the two rehabilitated male manatees 1–11 days after release when they dispersed to other areas. Five rescued manatees that were either pets (two males, two females) or illegally traded (one female) were rehabilitated with veterinary treatment and a diet of water lettuce Pistia stratiotes. After 13–31 months of rehabilitation, each of the five manatees (aged 32–79 months) was transported by seaplane, fitted with a radio-tag and placed in a floating cage (10 x 10 x 3 m) within a lake for an acclimatization period of three months before being released in July 2011. Radio-tracking was carried out between 0600 and 1800 h during 161 days in July–November 2011.

    (Summarised by: Anna Berthinussen)

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 21

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape ProgrammeRed List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Mauritian Wildlife Supporting Conservation Leaders
Sustainability Dashboard National Biodiversity Network Frog Life The international journey of Conservation - Oryx Cool Farm Alliance UNEP AWFA Bat Conservation InternationalPeople trust for endangered species Vincet Wildlife Trust