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 Tama Zoo
Creatures at Tama Zoo
Japanese Grass Vole
Alexandromys Montebelli
Japanese Grass Vole
Alexandromys Montebelli
They dig a network of tunnels about 50cm below the surface and gather dry grass to make their nests. Their ears are small and their tails are short so that they don't get in the way when passing through the tunnels they dig. It is said that they got their Japanese name from the fact that they are often found in fields and rice paddies.
| classification | Mammals, Rodentia, Cricetidae |
|---|---|
| English name | Japanese Grass Vole |
| distribution | Japan (Honshu, Kyushu, Sado Island, Noto Island) |
| Residence | Along the edges of fields and rice paddies, forests around rural areas, riverbeds, pastures, virgin forests, and areas of Japanese stone pine |
| Size |
頭胴長：95～136mm
尾長：29～50mm 体重：22～62g |
| food | Grasses and rhizomes of the grass and aster families |
| Red List |
IUCN: LC (Least Concern)
Tokyo: ○ (not ranked) |