Argentine Horned Frogベルツノガエル
Ceratophrys ornataNT— Near Threatened
The Argentine horned frog is a large, voracious ambush predator native to the grasslands of Argentina, Uruguay, and southern Brazil, nicknamed the "Pacman frog" for its oversized mouth and habit of trying to swallow anything that moves nearby. It hunts by burying itself halfway in soil and lunging at passing prey, feeding on insects, rodents, birds, and other frogs. Listed as Near Threatened by the IUCN due to habitat loss, it is also notable for tadpoles that emit distress calls when attacked, the first documented case of acoustic communication in any tadpole.
Argentine Horned Frog (reference photo)
Species Data
Did You Know?
- Its enormous mouth—accounting for roughly half its overall body size—and its habit of trying to swallow anything that moves within reach have earned it the nickname "Pacman frog." Source
- It hunts by burying itself halfway into the soil and ambushing prey that wanders within striking distance. Source
- Its tadpoles have been documented emitting distress calls when attacked both underwater and above water, marking the first reported case of acoustic communication in any tadpole, invertebrate larvae included. Source
Where to See This Species
4 facilities · 0 individuals
高知県立のいち動物公園 (Kouchi Kenritsu Noichi Doubutsu Kouen)Kochi土佐くろしお鉄道ごめん・なはり線「のいち駅」から徒歩20分またはレンタサイクル13分。
高知県立のいち動物公園のWikipedia記事に飼育種として記載 Source
Toba AquariumMieOpened in 1955
鳥羽水族館の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
Higashiyama Zoo and Botanical GardensAichiOpened in 1937
名古屋市東山動物園のWikipedia記事に飼育種として記載 Source
Conservation Story
Conservation Status
IUCNではNT(準絶滅危惧)です。草原と湿地の保全が重要です。
Habitat
南アメリカ南東部の草原、湿地、森林縁。
Threats
- 草原と湿地の農地化
- 生息地の分断
- 違法な採集
Conservation & Breeding Efforts
- 湿地と草原の保全
- 生息状況の調査
- 飼育下繁殖と教育展示
Sources
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FAQ
- Why is the Argentine horned frog called the Pacman frog?
- Its mouth is enormous relative to its body—roughly half its overall size—and it will attempt to swallow almost anything that comes within striking range, a resemblance to the arcade character that gave rise to the nickname. Source
- How does the Argentine horned frog hunt?
- It buries itself about halfway into the soil, staying motionless and camouflaged, then ambushes insects, rodents, and other frogs that wander close enough to strike. Source
- Can this frog's tadpoles make sounds?
- Yes—when attacked, their tadpoles emit distress calls both underwater and above the surface, the first documented example of acoustic communication in any tadpole, including invertebrate larvae. Source
Source: ja.wikipedia.org en.wikipedia.org