18. Chinchillas and Degus Flashcards
Suborder for Degus
Histricomorpha
What do degus do that indicate social standing?
Heap twigs in a pile
Are degus nocturnal or diurnal?
Diurnal
Sign of aggression degus
Leg kicks
What sound do degus make after grooming?
Warbling
Maimum speed of degus
10.7 mph
Do degus have internal carotids?
no
Thymus of degus
Cervical and mediastinal. Mediastinal thymus eventually regresses
Degu adrenal glands
Synthesize both corticosterone and cortisol
Scrotum of degus
No true scrotum (like other histricomorphs)
Female degu repro tract
Bicornuate with vaginal membrane open during estrus and proestrus
Degus are what kind of ovulators?
Spontaneous
When to start breeding degus?
6 months of age
Gestation period for degus
87-95days
Degu babies are precocious or altricial?
Precocious
Degu babies are weaned at what age/
5 weeks
Why do degus metabolize drugs differently from other rodents?
Greater cytochrome p450 in liver
Higher tolerance to morphine and pentobarbital
DM is possible in degus under what conditions?
Diet high in carbs
DM is associated with what other sequelae in degus?
Cataracts, amyloidosis, islet cell hyperplasia
Why are degus idea for circ rhythm studies?
They are diurnal
They are social
Breed well in captivity
Slower maturation rate compared to other rodents
Circ rhythm undergoes changes during puberty (like in humans)