CLASSIFICATION OF AXOLOTL LARVA
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
GEOGRAPHICAL DISTRIBUTION
- Found in North America, Central Mexico and the United States.
HABIT AND HABITAT
- Adults are terrestrial.
GENERAL CHARACTERSTICS OF AXOLOTL LARVA
- The Axolotl larva was previously considered as adult form and called Siredon. Later on it was found to be larva of Ambystoma.
- It has 3 pairs of crimson coloured external gills and 4 pairs of open gill clefts. Head contains eyes, nostril and mouth.
- Larva is perennial. Body measuring about 27 cm in length is divided into head, trunk and tail. Tail is provided with caudal fin. Forelimbs and hind limbs present.
- It becomes sexually mature and lays eggs.
- Axolotl larva in captivity metamorphoses to adult. Metamorphosis can be induced by injecting thyroid injections into Axolotl larva. Axolotls of six months or more are easily induced for metamorphosis.
Metamorphosis to adult becomes difficult as the larva grows older. The partly metamorphosed terrestrial animals can be again induced to go back to larval stage.
Special features
- Axolotl larvae of Ambystoma do not undergo metamorphosis if there is abundance of nutrition and oxygen supply and they develop gonads like adult to breed sexually. The phenomenon of neoteny or paedogenesis is either due to lack of iodine or heredity and environment. A. mexicanus is supposed to be genetically neotenic.
Identification
- This larva has 3 pairs of gills and above features, hence it is Axolotl larva.
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
OUR POSTS
WHALE (BALAENOPTERA)WHALE (BALAENOPTERA) CLASSIFICATION OF WHALE (BALAENOPTERA) PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present) Group :- CRANIATA (Definite head. Cranium with ...READ MORE
HEDGEHOG (ERINACEUS)HEDGEHOG (ERINACEUS) CLASSIFICATION OF ERINACEUS : HEDGEHOG PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present) Group :- CRANIATA (Definite head. Cranium with ...READ MORE
ZEBRAZEBRA CLASSIFICATION OF ZEBRA PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present ) Group :- CRANIATA ( Definite head. Cranium with brain present ) ...READ MORE
MANGOOSE : HERPESTESMANGOOSE : HERPESTES CLASSIFICATION OF MANGOOSE : HERPESTES PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present) Group :- CRANIATA (Definite head. Cranium with ...READ MORE
WHY ELEPHANTS NEVER FORGETS ?WHY ELEPHANTS NEVER FORGETS ? It’s a not unexpected saying that elephants always remember, and that is why these great creatures are more than just monster strolling on our planet earth. The ...READ MORE
SEAL : PHOCASEAL : PHOCA CLASSIFICATION OF SEAL (PHOCA) PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present) Group :- CRANIATA (Definite head. Cranium with brain present) ...READ MORE
HERDMANIA SLIDESHERDMANIA SLIDES Herdmania : Metamorphosis : Tadpole Larva Larva of Herdmania is called as tadpole larva. After hatching it leads a free-swimming life for 90-180 seconds and then undergoes ...READ MORE
AMMOCOETE LARVACYCLOSTOMATA SLIDES Lamprey : Ammocoete : Larva Whole Mount COMMENTS :- It is one of the stages in the development of lamprey. Egg develops into ammocoete larva, which is a tiny transparent creature ...READ MORE
VERTEBRAL COLUMNVertebral Column Notochord In all chordate embryos, the first axial endoskeleton to appear is a slender, stiff, unsegmented, gelatinous rod, the notochord. It is present below the nerve cord and ...READ MORE
SKULL BONESSKULL BONES SCOLIODON : SKULL BONES Skull consists of :- (A) Cranium and sense capsules, (B) Visceral skeleton. 1. Cranium and sense capsules Made up of a single piece of cartilage and divisible ...READ MORE
Pingback: TIGER SALAMANDER A DIARY SO WILD 2021
Hello to every single one, it’s genuinely a fastidious for me to pay a quick visit this site, it contains important Information.