CLASE OSTEICTIOS PDF

Los peces viven siempre en el agua, mientras que los anfibios nacen en el agua y vuelven a ella para reproducirse. Cuando esta larva, llamada renacuajo, ha crecido lo suficiente, sufre un proceso de metamorfosis. Desarrolla patas y pulmones y pierde la cola y las branquias. Para que estos huevos sean fecundados, resulta indispensable que el macho vierta su esperma sobre ellos en el momento oportuno. Esta es una ley general que no se aplica solamente para la reproduccion de peces. Existen machos y hembras, y es frecuente el dimorfismo sexual.

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No notes for slide. Las barbillas superiores alcanzan la base de la aleta pectoral. Pardo amarillento en juveniles. Salen constantemente a la superficie. Esteros y cursos de aguas quietas y fangosas. You just clipped your first slide! Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips. Visibility Others can see my Clipboard. Cancel Save.

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