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  2. Axolotl - Wikipedia

    en.wikipedia.org/wiki/Axolotl

    The axolotl (/ ˈ æ k s ə l ɒ t əl / ⓘ; from Classical Nahuatl: āxōlōtl [aːˈʃoːloːtɬ] ⓘ) (Ambystoma mexicanum) [3] is a paedomorphic salamander closely related to the tiger salamander. [3] [4] [5] It is unusual among amphibians in that it reaches adulthood without undergoing metamorphosis. Instead of taking to the land, adults ...

  3. Why axolotls seem to be everywhere — except in the one lake ...

    www.aol.com/why-axolotls-seem-everywhere-except...

    Axolotl is a word from Nahuatl, the Indigenous Mexican language spoken by the Aztecs and an estimated 1.5 million people today. ... The 10-square-mile Lake Xochimilco is a unique body of water, a ...

  4. Why Axolotls are Slowly Disappearing

    www.aol.com/why-axolotls-slowly-disappearing...

    The axolotl can grow up to 12 inches and weigh anywhere from three to eight pounds, and its average lifespan in the wild is 10-15 years. Most axolotls are dark brown with some black speckling, but ...

  5. Amphibian - Wikipedia

    en.wikipedia.org/wiki/Amphibian

    With the phylogenetic classification, the taxon Labyrinthodontia has been discarded as it is a polyparaphyletic group without unique defining features apart from shared primitive characteristics. Classification varies according to the preferred phylogeny of the author and whether they use a stem-based or a node-based classification ...

  6. Mole salamander - Wikipedia

    en.wikipedia.org/wiki/Mole_Salamander

    The mole salamanders (genus Ambystoma) are a group of advanced salamanders endemic to North America. The group has become famous due to the study of the axolotl (A. mexicanum) in research on paedomorphosis, and the tiger salamander (A. tigrinum, A. mavortium) which is often sold as a pet, and is the official amphibian of four US states.

  7. 'Adopt an axolotl' campaign launches in Mexico to save iconic ...

    www.aol.com/news/adopt-axolotl-campaign-launches...

    Virtual adoption comes with live updates on your axolotl’s health. In their main habitat the population density of Mexican axolotls (ah-ho-LOH'-tulz) has plummeted 99.5% in under two decades ...

  8. External gills - Wikipedia

    en.wikipedia.org/wiki/External_gills

    The axolotl has three pairs of external gills. This type of gill is most commonly observed on the aquatic larva of most species of salamanders, lungfish, and bichirs (which have only one large pair), and are retained by neotenic adult salamanders and some species of adult lungfish.

  9. Heterochrony - Wikipedia

    en.wikipedia.org/wiki/Heterochrony

    Axolotls retain gills and fins as adults; these are juvenile features in most amphibians. Paedomorphosis can be the result of neoteny , the retention of juvenile traits into the adult form as a result of retardation of somatic development, or of progenesis, the acceleration of developmental processes such that the juvenile form becomes a ...