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Herp vocab 1
Term | Definition |
---|---|
Spermatophore | |
General Anatomy of Salamanders | Four robust limbs; Anatomy and locomotion similar to ancestral state; common Paedomorphism; Cutaneous gas exchange; Mostly small |
General Location of Salamanders | Salamanders North to Central America |
Plethodontids | Lack lungs so entirely cutaneous; Small, long, and thin; Terrestrial; Ballistic tongue with skeletal elements from hyobrachial apparatus from ancestral gill arches |
Reproduction | Spermatophores to be picked up by female cloacas; Eggs are laid in water or on moist land; Viviparous young have long gestations and eat unfertilized eggs in the womb |
Paedomorphosis also called neoteny | A condition in which some species of salamanders don't metamorphose, but remain permanent larvae |
Eft | Juvenile stage of a salamander |
Thecodont | Having teeth that are set in sockets in the bone |
nictitating membrane | which is a transparent, movable membrane that covers the eyes allowing them to see with their 'eyelids' |
Pleurodont | Having teeth that are supported by a shelf of bone along the side of the teeth |
Jacobson's organ | extra sense organ in the roof of the mouth of reptiles. -used to detect scents in the air. |
Fenestra | Holes in the skull structure |
Synapsids | Have one hole in their skull on each side of the skull |
Diapsids | Have two holes in their skull on each side of the skull |
Anapsids | Have no holes in the skull on either side of the skull |
Acrodont | Having teeth that are fused to the outer surface of the bones that form the margin of the jaw |
Urostlye | bone formed from fused vertebrae at the base of the vertebral column - found in frogs and toads. |
Adductor Magnus | helps bring hind limbs to the body to help frogs jump |
parthenogenesis | asexual reproduction |
TSD | temperature dependent sex determination |
ESD | environmental sex determination |
Diapause: | delay in development in response to regular and recurring periods of adverse environmental conditions |
Vespertine | Active during evening |
Crepuscular | active at dawn and dusk |