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 Rhinoceros Beetle
Trypoxylus dichotomus
Japanese Rhinoceros Beetle
Trypoxylus dichotomus
Adults are active at night, gathering around tree sap and ripe fruit to lick the juices. They may also be attracted to artificial light. Males have horns, which they use to fight when they meet. Females burrow into compost or piled up leaves and lay round eggs the size of a grain of rice. The hatched larvae feed on leaf mold and grow, surviving winter before pupating.
| classification | Insecta, Coleoptera, Scarabaeidae |
|---|---|
| English name | Japanese Rhinoceros Beetle |
| distribution | Japan (Honshu, Shikoku, Kyushu, and recently introduced to Hokkaido and Okinawa), Korean Peninsula, China, Taiwan, Indochina, Vietnam |
| Residence | Mixed forest, village forest |
| Size |
Body length: 27-75mm
|
| food | Larvae: Leaf mold Adult: tree sap |
| Red List |
Unrated
|