E-PILOT  萬物皆可蟹-蟹化的趨同演化現象(Carcinisation) episode artwork

EPISODE · Jun 21, 2025 · 7 MIN

E-PILOT 萬物皆可蟹-蟹化的趨同演化現象(Carcinisation)

from 雷比特生物空中講 · host 雷比特老師

深入探討蟹化現象(Carcinisation),這是一種多種甲殼類動物在演化過程中,獨立地發展出類似螃蟹外形的趨同演化(convergent evolution)案例。解釋蟹化如何導致生物從細長身形轉變為短而寬、腹部縮短的「螃蟹狀」體型,並指出英國動物學家L. A. Borradaile於1916年首次提出此概念。透過分子生物學證據,研究揭示蟹化在十足目動物中至少獨立發生過五次以上,顯示這種形態在不同環境下具有強大的生存優勢。還比較真蟹(Brachyura)與蟹化假蟹在結構、生殖和基因層面的根本差異,證明其雖外形相似但親緣關係遙遠,最後總結蟹化是自然選擇偏好功能實用性而非血緣的例證。 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://g.co/gemini/share/972cb21b7810 Powered by Firstory Hosting

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E-PILOT 萬物皆可蟹-蟹化的趨同演化現象(Carcinisation)

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