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How are mud puppies adapted to permanent life in water?
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Caudata
Tiger salamanders (Ambystoma tigrinum) are widespread across much of the United States. Although they are generally black with yellow blotches, bars, spots, or even stripes, some are lighter in colour or have olive markings. Tiger salamanders belong to the mole salamander family, Ambystomatidae.
Mud puppies are entirely aquatic salamanders that exhibit several physiological adaptations for a permanent life in water.1
- Respiration: Unlike many other amphibians that undergo metamorphosis, mud puppies retain their bright red external gills throughout their entire lives, allowing them to breathe underwater.1
- Locomotion: They possess a flattened tail equipped with dorsal and ventral fins, which serves as their primary appendage for swimming.1
- Habitat and Behavior: These animals are found in lakes, rivers, and swamps, where they prefer clear, silt-free environments. They are well-suited to this aquatic lifestyle by hiding under stones or debris during the day to avoid detection while hunting for prey such as crayfish and mollusks.1
These features ensure that the mud puppy remains fully integrated into its aquatic ecosystem from birth to adulthood.1