Ammoniotélisme

Cet article est une ébauche concernant la biologie.

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L'ammoniotélisme, ou ammoniotélie, est le caractère des animaux qui excrètent principalement leurs déchets azotés sous forme d'ammoniac (NH₃). Elle concerne surtout les animaux aquatiques, les animaux menant une vie aérienne rejetant de l'urée ou de l'acide urique^[1]^,^[2]. Les anoures rejettent ainsi de l'ammoniac au stade têtard, puis de l'urée à l'état adulte^[3].

L'ammoniotélisme n'est possible que chez les animaux aquatiques, en raison de son coût élevé en eau : il faut 500 ml d'eau pour évacuer 1 g d'ammoniac^[2].

Notes et références

Voir aussi

Cycle de l'urée

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