Amphibians taxonomy Flashcards
3 Orders of amphibians
Apoda
Caudata
Anura
Name a species of amphibian in order Apoda
Caecilians
Neoteny
The retention of larval characteristics during sexual maturation and into adulthood.
Newt
A salamander which has a terrestrial phase (“eft”) following the aquatic larval form and preceding an aquatic adult form.
unique feature of axolotls
They’re capable of being primarily neotenic
Characteristics of anura
Well developed hind limbs and pelvic girdle
Fused head and trunk
10 vertebrae
Dorsal lymph sacs
Difference between salamanders and frogs
Bones and attachments different
Incomplete ossification of pelvic girdle, carpus, tarsus
Paravertebral lime sacs
Calcium storage structures thought to store Ca for metamorphosis
2 forms of amphibian respiration
Cutaneous, pulmonary
When is cutaneous respiration used
Hibernation
How does cardiovascular system change from juvenile to adult?
One atrium + one ventricle -> two atria and one ventricle
Sexual dimorphism of frogs
Nuptial pads, large tympanic membranes (males)
8 possible anesthetics for amphibians
Tricaine Benzocaine Telazol Ketamine Barbiturates Iso Propofol Eugenol
Crucial thing to make sure of during anesthesia and recovery
Important to maintain high humidity to prevent drying of skin
Do not return amphibians to water until they’ve recovered fully (can drown)
S. tropicalis advantages
Shorter generation time, diploid genome
