The order Caudata, also known as Urodela, includes all salamanders and newts—amphibians characterized by their elongated bodies, tails, and paired limbs. They typically undergo metamorphosis, transitioning from aquatic larvae with gills to air-breathing adults, although some species retain larval traits throughout life (neoteny). Caudates are mostly found in the Northern Hemisphere, inhabiting moist environments where their permeable skin facilitates respiration. They play vital roles in ecosystems as both predators and prey, and some remarkable species can regenerate lost limbs.
- Elongated, tailed amphibians with paired limbs
- Undergo metamorphosis; some exhibit neoteny
- Inhabit moist, temperate environments in the Northern Hemisphere
- Important ecological roles as predators and prey
- Noted for exceptional regenerative abilities
Caudata are defined by their elongated bodies, tails, paired limbs, and metamorphic life cycle.
Caudata are primarily distributed in the Northern Hemisphere.
Caudata function as both predators and prey in their ecosystems.
Some Caudata can regenerate lost limbs.
Limb Regeneration
Caudata can regenerate limbs, tail, and even some internal organs.
Dedifferentiation of cells at the injury site allows for regeneration.
Regeneration research offers clues for medical advances and developmental biology.
No, regenerative capacity varies among species and developmental stages.
Moist Skin
Moist skin aids respiration, offers protection, and retains moisture.
Mucus secreted by skin glands maintains moisture and enables gas exchange.
Moist skin confines Caudata to humid environments to avoid dehydration.
No, skin respiration complements but does not replace lung or gill respiration.
Diverse Habitats
Caudata inhabit freshwater, terrestrial forests, and caves, but not marine environments.
Cave-dwelling Caudata often have reduced pigmentation and eyesight.
They rely on moist microhabitats and nocturnal behavior to prevent desiccation.
Most Caudata species depend on water for reproduction.
Conclusion
Caudata are a fascinating group of amphibians distinguished by their tails, limb regeneration, and adaptability to diverse, often moist habitats.
- Unique traits: tails, limb regeneration, neoteny
- Found mainly in Northern Hemisphere
- Important roles in ecosystem balance and scientific research