White Rhinocerosシロサイ

Ceratotherium simumNT— Near Threatened

The white rhinoceros is the largest living rhino species, native to the grasslands and savannas of southern Africa. A specialized grazer with a distinctive wide, square lip for cropping short grass, it is divided into southern and northern subspecies with vastly different fates: the southern subspecies numbers in the tens of thousands, while the northern subspecies is functionally extinct, surviving only as two females under protection. The IUCN lists the species overall as Near Threatened, with poaching for its horn the primary threat.

White Rhinoceros (reference photo)
Photo: Vauxford / CC BY-SA 4.0 / Source / cropped

Species Data

Classification
Perissodactyla / Rhinocerotidae Source
Distribution
The white rhinoceros is found mainly in southern Africa, including South Africa, Namibia, Botswana, and Zimbabwe, and is divided into southern and northern subspecies. Source

Did You Know?

  • Its eyesight is poor, struggling to see objects even 30 meters away, but this is compensated by an excellent sense of hearing and smell. Source
  • The horn is made entirely of keratin, the same protein found in fingernails and hair, with no bony core, yet mistaken beliefs about its medicinal value have made it a poaching target. Source
  • The northern subspecies has had no confirmed wild sightings since 2006, and as of the present day only two females survive under protection in Kenya. Source

Where to See This Species

5 facilities · 0 individuals

Japan Overseas

アドベンチャーワールド (Adobencha World)WakayamaOpened in 1978

アドベンチャーワールドのWikipedia記事に飼育種として記載 Source

Nagasaki Bio ParkNagasakiOpened in 1980

長崎バイオパークのWikipedia記事に飼育種として記載 Source

那須サファリパーク (Nasusafari Park)Tochigi東北自動車道「那須IC」から約15分、「黒磯板室IC」から約25分。

那須サファリパークのWikipedia記事に飼育種として記載 Source

富士自然動物公園 (Fujishizen Doubutsu Kouen)ShizuokaOpened in 1980

富士自然動物公園のWikipedia記事に飼育種として記載 Source

San Diego ZooOpened in 1916

シロサイのWikipedia記事に飼育施設として記載 Source

Conservation Story

Conservation Status

IUCNではNT（準絶滅危惧）。亜種によって保全状況は大きく異なります。

Habitat

南部アフリカを中心とする草原とサバンナ。

Threats

  • 角を目的とした密猟
  • 生息地の減少
  • 小規模個体群の遺伝的な脆弱性

Conservation & Breeding Efforts

  • 密猟対策
  • 保護区での個体群管理
  • 飼育下での繁殖

Sources

ja.wikipedia.org en.wikipedia.org

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FAQ

What is the difference between the northern and southern white rhinoceros?
The southern white rhinoceros has recovered to a wild population of roughly 17,000 to 18,000, while the northern subspecies is functionally extinct, with only two related females remaining under protection in Kenya since no wild individuals have been confirmed since 2006. Source
What are white rhino horns made of?
The horns are made of keratin, the same protein found in human hair and fingernails, with no bony core inside. Source
What do white rhinos eat?
They are specialized grazers that feed mainly on short grasses close to the ground, using their wide, square lips to crop vegetation efficiently. Source

Source: ja.wikipedia.org en.wikipedia.org