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
Japanese Ratsnake
Elaphe climacophora
Japanese Ratsnake
Elaphe climacophora
It is the largest snake in Japan, excluding Okinawa. When fully grown, it has four indistinct vertical stripes, but when young it has ladder-shaped markings and is often mistaken for a pit viper. It is an excellent tree climber and sometimes attacks bird nests in trees. The albino form of Japanese Ratsnake is designated as a national natural monument, known as the "white snake."
| classification | Reptilia, Squamata, Colubridae |
|---|---|
| English name | Japanese Ratsnake |
| distribution | Hokkaido, Honshu, Shikoku, Kyushu, Kunashiri Island, Izu Islands, Tsushima, Satsunan Islands |
| Residence | From flatlands to forests and cultivated land in low mountains, as well as houses and their surrounding areas |
| Size |
Total length: 1-2.5m, maximum 3m
|
| food | Birds and their eggs, and small mammals such as mice |
| Red List |
IUCN: LC (Least Concern)
Tokyo: NT (near threatened) |