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
Forest Green Tree Frog
Zhangixalus arboreus
Forest Green Tree Frog
Zhangixalus arboreus
This is a species of green tree frog endemic to Japan. It is arboreal and has well-developed suckers on the tips of its fingers. Its body is green in eastern Japan, but in the Kanto region and west, some species have reddish-brown patterns on their backs. Its eyes are red. It does not lay eggs directly in the water, but creates white foam-like masses on the branches and leaves of trees near the water and lays them inside. Tadpoles hatch inside these egg masses and drop into the water.
| classification | Amphibians, Anura, Rhacophoridae |
|---|---|
| English name | Forest Green Tree Frog |
| distribution | Japan (Honshu, Sado Island) |
| Residence | Forest Marsh |
| Size |
Body length: Males 42-60mm, females 59-82mm
|
| food | Larvae: Plant material such as fallen leaves and moss Adults: insects, spiders, etc. |
| Red List |
IUCN: LC (Least Concern)
Tokyo: NT (near threatened) |
Exhibition at Tama Zoo
At Insectarium, they are exhibited in the same case as Montane Brown Frog. While Montane Brown Frog is terrestrial and often found near the ground, Forest Green Tree Frog tree frog is arboreal and often found on leaves and other surfaces.