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
Saltwater Crocodile
Crocodylus porosus
Saltwater Crocodile
Crocodylus porosus
It is one of the largest crocodiles. It lives in brackish water, a mixture of seawater and freshwater, hence the name "Saltwalter crocodile." It lies in wait near the water, and when prey comes close to drink, it bites them with its large jaws and pulls them into the water.
| classification | Reptilia, Crocodilia, Crocodylidae |
|---|---|
| English name | Saltwater Crocodile |
| distribution | Southwestern India, southern China, Malaysia, Indonesia, the Philippines, New Guinea, and northern Australia |
| Residence | Waterside and coastal areas (including freshwater, brackish water, and marine water areas) such as estuaries, coastal areas, mangrove areas, freshwater lakes and rivers |
| Size |
Total length: Males 4.3-4.9m, females 2.5-3m
Weight: Males 400-550 kg, females 80-100 kg |
| food | Small individuals eat insects, frogs, fish, crustaceans, and shellfish, and as they grow, they also eat mammals. |
| Red List |
IUCN: LC (Least Concern)
|