Difference between revisions of "Physical World/Amphibians"

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'''Great crested newt'''
 
'''Great crested newt'''
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''Triturus  cristatus''  
 
''Triturus  cristatus''  
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Also known as northern crested newt
 
Also known as northern crested newt
 
  
 
Males can be  distinguished from females by the presence of a jagged crest during the  breeding season
 
Males can be  distinguished from females by the presence of a jagged crest during the  breeding season
 
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Latest revision as of 14:47, 1 July 2021

Midwife toad.jpg
Midwife toad


genus Alytes

The males carry a string of fertilised eggs on their back, hence the name "midwife"

The back of the midwife toad is covered with small warts. These warts give off a strong smelling poison when the toad is attacked

Natterjack toad.jpg
Natterjack toad


Bufo calamita


Distinguished from common toads by a yellow line down the middle of the back, and parallel paratoid glands

Natterjacks have a very loud and distinctive mating call

Cane toad.jpg
Cane toad


Rhinella marina


Introduced to many regions of the Pacific and the Caribbean islands as a method of agricultural pest control. The species derives its common name from its use against the cane beetle. The cane toad is now considered a pest and an invasive species

Goliath frog.jpg
Goliath frog


Conraua goliath


Largest living frog on Earth. Specimens can grow up to 32 cm (12.6 in) in length. Found in Cameroon and Equatorial Guinea

The one in the picture has stolen a watch!

American bullfrog.jpg
American bullfrog


Rana catesbeiana


Has an olive green back and sides. Males have yellow throats

Native to southern and eastern parts of the United States and Canada

Paradoxical frog.jpg
Paradoxical frog


Pseudis paradoxa


Its name refers to the very large – up to 25 cm (10 in) long – tadpole, which in turn becomes an ordinary-sized frog, only about a quarter of its former length

Xenopus.jpg
Xenopus


genus Xenopus


Commonly known as the clawed frog

Studied as model organisms for developmental biology, cell biology, toxicology, neuroscience and for modelling human disease and birth defects

Chinese giant salamander.jpg
Chinese giant salamander


Andrias davidianus


The largest salamander and largest amphibian in the world, reaching a length of 180 cm (5.9 ft)

A living fossil which is classified as critically endangered

Hellbender.jpg
Hellbender


Cryptobranchus alleganiensis


A species of giant salamander endemic to eastern North America


It is blotchy brown or red-brown in colour, with a paler underbelly

Axolotl.jpg
Axolotl


Ambystoma mexicanum


Also known as a Mexican salamander and colloquially known as a "walking fish"

Axolotls reach adulthood without undergoing metamorphosis. Instead of developing lungs and taking to land, the adults remain aquatic and gilled


Great crested newt.jpg


Great crested newt


Triturus cristatus


Also known as northern crested newt

Males can be distinguished from females by the presence of a jagged crest during the breeding season