Northern Rockhopper Penguinキタイワトビペンギン
Eudyptes moseleyiEN— Endangered
The northern rockhopper penguin is a crested penguin that breeds mainly on Tristan da Cunha and Gough Island in the South Atlantic, with smaller colonies on Amsterdam and Saint Paul Islands in the southern Indian Ocean. A 2006 study confirmed it as a species distinct from the southern and eastern rockhopper penguins. It forages on krill, squid, and fish, but its population has collapsed by an estimated 90% since the 1950s due to climate-driven changes in its marine food web, overfishing of squid and octopus, and predation by introduced mice, leading to its Endangered status.
Northern Rockhopper Penguin (reference photo)
Species Data
Did You Know?
- A 2006 study established it as a species distinct from the southern and eastern rockhopper penguins based on plumage, crest length, body size, vocal, and genetic differences. Source
- After the 2011 MS Oliva oil spill, affected penguins were transported to Tristan da Cunha for cleaning. Source
- Introduced house mice have been found preying on eggs and chicks, prompting consideration of culling programs. Source
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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
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京急油壺マリンパークのWikipedia記事に飼育種として記載 Source
長崎ペンギン水族館 (Nagasakipengin Suizokukan)NagasakiOpened in 2001
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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
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- 父に置いて行かれて不満を叫ぶヒナ【キタイワトビペンギン】
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Conservation Story
Conservation Status
IUCNレッドリストでは絶滅危惧（EN）に分類されている。2009年に発表された研究では、1950年代から個体数が推定90%減少したと報告された。
Habitat
南大西洋のトリスタン・ダ・クーニャ諸島とゴフ島（世界の個体群の99%以上）、インド洋南部のアムステルダム島・サンポール島の岩場海岸
Threats
- 気候変動と海洋生態系の変化、イカ・タコ類の乱獲による餌資源の減少
- 外来種のハツカネズミによる卵・ヒナの捕食
- 亜南極オットセイによる捕食、漁業・エコツーリズムによる攪乱、油流出事故
Conservation & Breeding Efforts
- 2011年のMSオリバ号重油流出事故では被害個体をトリスタン・ダ・クーニャ島へ移送し洗浄する救護活動が行われた
- ゴフ島などで外来ハツカネズミの駆除が保全策として検討・実施されている
Sources
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FAQ
- How is the northern rockhopper penguin different from other rockhopper penguins?
- A 2006 study found it to be a genetically and morphologically distinct species from the southern and eastern rockhopper penguins, differing in plumage pattern, crest length, and body size. Source
- Why is the northern rockhopper penguin endangered?
- Its population has declined by an estimated 90% since the 1950s, driven mainly by climate change, shifts in the marine ecosystem, and overfishing of squid and octopus. Source
- Where do most northern rockhopper penguins breed?
- More than 99% of the population breeds on Tristan da Cunha and Gough Island in the South Atlantic. Source
Source: ja.wikipedia.org en.wikipedia.org