E-PILOT 有夠鯊!! 鯊魚劍客-鋸鯊 episode artwork

EPISODE · Nov 29, 2025 · 14 MIN

E-PILOT 有夠鯊!! 鯊魚劍客-鋸鯊

from 雷比特生物空中講 · host 雷比特老師

探討軟骨魚綱中獨特的底棲物種——鋸鯊目(Sawshark),牠們以其長有鋸齒的吻部聞名,首要任務是區分與其外形相似、屬於鰩魚類的鋸鰩,指出兩者是趨同演化的案例,並提供基於鰓裂位置與觸鬚的快速鑑別方法。鋸鯊的長吻不僅是捕獵時用來側向揮擊的武器,更是一個精密的感測系統,配備高靈敏度的羅倫氏壺腹,使其能在漆黑的深海中精準定位沙底下的獵物。在分類學上,強調了鰓裂數量是區分屬的重要依據,並提及2020年有兩種全新的六鰓鋸鯊被發現,突顯深海生物研究的持續進展。然而,儘管這些「深海劍客」生活在偏遠的水域,牠們仍受到人類活動的嚴重威脅,特別是其鋸狀長吻容易被底拖網纏住,導致族群數量難以估計。 聽完後可以自主進行線上測驗,檢視學習成效喔~(需要登入gemini) 測驗網址  https://gemini.google.com/share/625384328ef5 Powered by Firstory Hosting

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E-PILOT 有夠鯊!! 鯊魚劍客-鋸鯊

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