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Amphibian Digestion

Amphibian Digestion. Amphibians include frogs, toads, salamanders, newts, & caecilians. Amphibians most likely evolved from the lobe-finned fishes, so their digestive systems are also similar. Mouth. Contains maxillary and vomerine teeth. Tongue attached at the front of the mouth .

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Amphibian Digestion

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  1. Amphibian Digestion

  2. Amphibians include frogs, toads, salamanders, newts, & caecilians.

  3. Amphibians most likely evolved from the lobe-finned fishes, so their digestive systems are also similar.

  4. Mouth • Contains maxillary and vomerine teeth. • Tongue attached at the front of the mouth. • Teeth are pedicellate. • Use eyes to swallow. • Most toads have no teeth.

  5. Eating • Swallows food whole • Sticky coiled tongue in frogs & some Salamanders = bolitoglossine can extend length of head & trunk!

  6. Eating Continued • Other salamanders use suction by rapidly opening the mouth. • Adults are carnivores. • Saliva converts starch to sugar. • Eat worms, insects, birds, and especially other frogs. http://www.youtube.com/watch?v=aJhg53GtH4k

  7. Digestive Tract • Digestive organs: • Accessory organs

  8. It All Ends Here • Digestive tract ends with cloaca - cavity at end of large intestine where wastes from urinary bladder, solid waste from intestines, and eggs or sperm all exit body via vent / anus.

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