Reeves' Pond Turtleクサガメ
Mauremys reevesiiEN— Endangered
Reeves's turtle, known in Japan as kusagame, is a semiaquatic pond turtle native to Korea and eastern China, with long-established but likely introduced populations in Japan and Taiwan. Mature males undergo dramatic melanism, turning almost entirely black, while juveniles are marked by distinctive yellow shell seams. Once common and still farmed by the millions in China for food, medicine, and the pet trade, the species is now classified as Endangered by the IUCN due to overharvesting, habitat loss, and competition from invasive red-eared sliders.
Reeves' Pond Turtle (reference photo)
Species Data
Did You Know?
- Juveniles often have yellow seams along their carapace scutes, giving rise to the alternate Japanese name "golden-line turtle." Source
- Mature males over about 7 years old often undergo melanism, turning almost entirely black—including the eyes—and losing their juvenile markings. Source
- It has musk glands at the base of its limbs and releases a foul odor as a defense mechanism when threatened. Source
Where to See This Species
5 facilities · 0 individuals
ごかつら池どうぶつパーク (Gokatsuraikedoubutsu Park)Mie勢和多気ICから約10分。
ごかつら池どうぶつパークのWikipedia記事に飼育種として記載 Source
京都市動物園 (Kyoutoshi Doubutsuen)KyotoOpened in 1903
京都市動物園のWikipedia記事に飼育種として記載 Source
桐生が岡動物園 (Kiryuugaoka Doubutsuen)Gunma自動車の場合、カーナビ検索は「桐生が岡動物園」ではなく「桐生が岡遊園地」で設定すると駐車場に到着できる(動物園名で検索すると誤った経路になる場合がある)。
桐生が岡動物園のWikipedia記事に飼育種として記載 Source
東京都恩賜上野動物園 (Toukyoutoonshiueno Doubutsuen)TokyoOpened in 1882
東京都恩賜上野動物園のWikipedia記事に飼育種として記載 Source
飯田市立動物園 (Iida Shiritsu Doubutsuen)Nagano
飯田市立動物園のWikipedia記事に飼育種として記載 Source
Conservation Story
Conservation Status
IUCNではEN。原産地では採捕、取引、生息地の破壊などが脅威です。
Habitat
沼、池、浅い流れ、水路などの淡水域。
Threats
- 生息地の破壊
- 過度の採捕
- ペット取引
Conservation & Breeding Efforts
- 原産地個体群への配慮
- 飼育下での交雑防止
Sources
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FAQ
- Is the Reeves's turtle native to Japan?
- Most evidence suggests it is not originally native—Japanese populations are believed to descend from turtles introduced from the Korean Peninsula, though the exact timing remains debated. Source
- Why do male Reeves's turtles turn black?
- Males over roughly 7 years old commonly develop melanism, a condition in which the body, including the eyes, darkens to almost solid black and the juvenile pattern disappears. Source
- Why is the Reeves's turtle endangered?
- Wild populations have declined sharply due to overharvesting for food and traditional medicine, pet-trade capture, habitat loss, and competition with invasive red-eared sliders, leading the IUCN to list it as Endangered. Source
Source: ja.wikipedia.org en.wikipedia.org