CLASSIFICATION OF AMBYSTOMA MACULATUM : TIGER SALAMANDER
PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present )
Group :- CRANIATA ( Definite head. Cranium with brain present )
Sub-phylum :- VERTEBRATA ( vertebral column present)
Division :- GNATHOSTOMATA ( Jaws and paired appendages present )
Super class :- TETRAPODA ( Paired limbs, lungs, bony skeleton and cornified skin)
Class :- AMPHIBIA ( Scaleless glandular skin , have 3 chambered heart , cold blooded, 2 occipital condyles, can live in water and land both )
Order :- URODELA OR CAUDATA ( Scaleless Amphibia having well developed tail, generally with two limbs, with or without external gills and gill-slits in adults).
Sub-order :- . AMBYSTOMOIDEA ( Eye lid, present Adults are terrestrial).
Genus :- Ambystoma
Species :- maculatum
GEOGRAPHICAL DISTRIBUTION
- Adult Ambystoma is terrestrial, found in North America, Central Mexico and the United States.
HABIT AND HABITAT
- Adults are terrestrial. One of the largest terrestrial salamanders in North America.
GENERAL CHARACTERSTICS OF AMBYSTOMA MACULATUM : TIGER SALAMANDER
- Commonly known as Tiger salamander or Spotted salamander.
- Body is lizard-like, has transverse grooves and measures 18 to 20 cm size. Body divisible into head, trunk and tail.
- Spotted salamander (A. maculatum) has round yellow and orange spots over body, while Tiger salamander (A. trigrinum) has more spots extending over belly. Skin poisonous.
- Head is depressed with large mouth and contains eyes and a pair of poison glands called paratoids. External gills and tail fin are absent. Eyelids and lungs present.
- Limbs well-developed. Forelimbs and hind limbs contains 4 and 5 digits, respectively.
- Prevomers short and devoid of posterior processes, teeth across rear margins of vomers. No teeth on palatine. Vertebrae amphicoelus.
- Sexes are separate. Fertilization internal. Fertilized egg develops into an Axolotl larva.
Special features
- They are extremely loyal to their birthplaces, and will travel long distances to reach them. However, a single tiger salamander has only a 50% chance of breeding more than once in its lifetime. The tiger salamander’s ideal breeding period is somewhere between the late winter and early spring, once the ground is warm enough and the water is thawed.
Identification
- This amphibian contains spotted skin and above features, hence it is Ambystoma maculatum.
REFERENCES
- https://en.wikipedia.org/wiki/Axolotl
- Book of Practical Zoology VERTEBRATE by S.S.LAL – Rastogi Publications.
- image source – https://www.google.com/urlsa=i&url=https%3A%2F%2Fwww.pinterest.com
- https://www.google.com/urlsa=i&url=https%3A%2F%2Fwww.scientificamerican.com
- https://www.google.com/urlsa=i&url=https%3A%2F%2Fwww.thoughtco.com
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