北海獅
外觀
北海獅(_Eumetopias jubatus_)主要分布佇北太平洋沿岸,是北海獅屬的唯一種類,海獅科上大的一種。
外形
成熟的北海獅比其他種的海獅色淺,一般是淡黃到淡棕色,有時仔有一寡紅色。雌北海獅比雄的較淺小可仔。拄仔出世的北海獅差不多是純烏色,幾個月了後才退色。一般出世的時體重為二十三公斤左右,無論母雄,前五年呢快速成長。五歲了後,雌性大約二孵五米長,三百公斤,成長速度減慢誠濟,但是雄性可能到五歲到八歲性發育完全了後才停止成長,到彼當陣大甲三兩三 m 左右,而且胸,頷頸佮上身闊大,重量達到六百分一千一百公斤。雄性額頭較闊,喙較平,頷頸周圍有一輾較黑氣的毛,看起來有一點仔親像一箍鬃毛。𪜶的拉丁文名事實會當翻譯做「有山毛的高額者」。
參考文件
延伸閱讀
外部連結
- Marine Mammal Center–Steller Sea Lion
- US National Marine Fisheries Service Steller Sea Lion web page
- ARKive–images and movies of the Steller sea lion _ ( Eumetopias jubatus ) _
- Alaska Department of Fish and Game page on Steller sea lions
- Overview of Steller sea lion research at NOAA , National Marine Fisheries Service , National Marine Mammal Lab
- _ Nature _ documentary about the decline of Steller's sea lions
- News media report on Steller sea lions and sturgeon interactions
- SeaLionPredation . com–news and information on seal and sea lion predation of salmon and steelhead in the Pacific Northwest
- NOAA fact sheet on pinnipeds in the Columbia River
- Georg Steller's original description in _ De Bestiis Marinis , or , The Beasts of the Sea _ ( 一千七仔五十一 )
- Watch more Steller sea lion ( Eumetopias jubatus ) video clips from the BBC archive on Wildlife Finder
- Fifteen years of research into the Alaska populations of Steller Sea Lions at the Alaska SeaLife Center