Zoo Stock Species and the Red List
Zoo Stock Species and the Red List
Zoo Stock
This indicates that the species is included in the Second Zoo Stock Plan, which was formulated by the Tokyo Metropolitan Government in 2018. The plan sets goals for the next 10 years in three areas: "species conservation," "contribution to wildlife conservation," and "environmental education and conservation awareness." 124 animal species are included.
What is the Red List?
Based on scientific research, this is a list of wildlife classified by rank (category) indicating the degree of risk of extinction.
Livng Things Encyclopedia shows the categories (mainland and islands) assessed by the IUCN (International Union for Conservation of Nature) at the global level, the Ministry of the Environment for Japan, and the Tokyo Metropolitan Government for Tokyo.
The higher the category in each table, the higher the risk of extinction, and CR, EN, and VU are the three categories known as "endangered species." In Tokyo, species that are not at the NT (near threatened) level but are relatively rare are considered "species of concern."
|
IUCN categories |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
— |
|
CR |
Serious crisis |
|
EN |
crisis |
|
VU |
emergency |
|
NT |
Near Threatened |
|
LC・○ |
Low Concern |
|
DD |
Data shortage |
|
LP |
— |
|
Japan (Ministry of the Environment) Category |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
Endangered species |
|
CR |
Critically Endangered |
|
EN |
Endangered species |
|
VU |
Endangered species |
|
NT |
Near Threatened |
|
LC・○ |
— |
|
DD |
Lack of information |
|
LP |
Endangered |
|
Tokyo Category |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
Endangered species |
|
CR |
Critically Endangered |
|
EN |
Endangered species |
|
VU |
Endangered species |
|
NT |
Near Threatened |
|
LC・○ |
Unranked |
|
DD |
Lack of information |
|
LP |
Endangered |
Creatures at Ueno Zoo
Creatures at Ueno Zoo
West African Dwarf Crocodile
Osteolaemus tetraspis
West African Dwarf Crocodile
Osteolaemus tetraspis
They live in freshwater areas such as mountain streams in tropical rainforests, but also have a strong tendency to live on land, where they can run quickly by jumping.They are nocturnal, spending the day basking on land and at night they go into the water in search of prey.
| classification | Reptilia, Crocodilia, Crocodylidae |
|---|---|
| English name | West African Dwarf Crocodile |
| distribution | West and Central African countries along the Gulf of Guinea |
| Residence | Mainly freshwater areas such as mountain streams in tropical rainforests |
| Size |
Total length: 200cm
|
| food | Shellfish, crustaceans, fish, frogs, etc. |
| Red List |
IUCN: VU (Very)
|
Teeth that are always visible
Crocodilians of the Crocodile family are characterized by their pointed mouths, and their teeth are visible even when their mouths are closed. In addition, this species has a short snout (the length from the head to the tip of the nose) and a notched rear end.