18. Chinchillas and Degus Flashcards

1
Q

Suborder for Degus

A

Histricomorpha

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2
Q

What do degus do that indicate social standing?

A

Heap twigs in a pile

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3
Q

Are degus nocturnal or diurnal?

A

Diurnal

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4
Q

Sign of aggression degus

A

Leg kicks

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5
Q

What sound do degus make after grooming?

A

Warbling

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6
Q

Maimum speed of degus

A

10.7 mph

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7
Q

Do degus have internal carotids?

A

no

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8
Q

Thymus of degus

A

Cervical and mediastinal. Mediastinal thymus eventually regresses

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9
Q

Degu adrenal glands

A

Synthesize both corticosterone and cortisol

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10
Q

Scrotum of degus

A

No true scrotum (like other histricomorphs)

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11
Q

Female degu repro tract

A

Bicornuate with vaginal membrane open during estrus and proestrus

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12
Q

Degus are what kind of ovulators?

A

Spontaneous

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13
Q

When to start breeding degus?

A

6 months of age

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14
Q

Gestation period for degus

A

87-95days

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15
Q

Degu babies are precocious or altricial?

A

Precocious

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16
Q

Degu babies are weaned at what age/

A

5 weeks

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17
Q

Why do degus metabolize drugs differently from other rodents?

A

Greater cytochrome p450 in liver

Higher tolerance to morphine and pentobarbital

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18
Q

DM is possible in degus under what conditions?

A

Diet high in carbs

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19
Q

DM is associated with what other sequelae in degus?

A

Cataracts, amyloidosis, islet cell hyperplasia

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20
Q

Why are degus idea for circ rhythm studies?

A

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)

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21
Q

What do degus develop at 5 years of age?

A

Alzheimer’s disease - homology between degu and human AB protein

22
Q

Natural defensive move of females

A

Stand on hind legs, spray urine

23
Q

Chinchillas are cursorial. What does this mean?

A

They have been adapted to run

24
Q

Chinchilla urinalysis

A

High pH, high calcium carbonate, high USG

25
Q

Female chinchilla repro tract

A

Bicornuate, dual cervices, large urogenital papilla, vaginal closure membrane

26
Q

Chinchillas have how many pairs of mammary glands?

A

3 - one inguinal, two thoracic

27
Q

How to restrain Chinchilla?

A

Grasp by base of tail - scruffing will result in fur slip

28
Q

Light:dark cycle of chinchilla

A

12:12 or 14:10

29
Q

Space and height recommendations for Chins

A

1-2ft^2, 12 inches recommended (nothing in Guide or AWA)

30
Q

Sexual maturity for Chins

A

4-12 months

31
Q

When to breed female Chins?

A

6 mos

32
Q

Chin estrus cycle length

A

38 days

33
Q

Gestation length in chins

A

111 days

34
Q

Newborn chins are precocial or altricial?

A

Precocial

35
Q

How to prevent pseudomonas in chins

A

Chlorinate water

36
Q

C/S of Yersinia pseudotuberculosis or enterocolitica in chins

A

Mucosal hemorrhage and ulceration of ileum, cecum, colon

37
Q

Viral diseases are rare in chins - T or F?

A

T

38
Q

Which human herpesviruses are chins susceptible to?

A

Human Herpesvirus -1: Conjunctivitis, neuro signs, meningitis

39
Q

2 fungal diseases in chins

A

Histoplasma capsulatum, dermatophytosis (Trichophyton mentagrophytes)

40
Q

C/S of toxo in chins

A

Meningoencephalitis, pulmonayr hemorrhages

41
Q

Sarcocystis-like protozoa in chins

A

Frenkelia

42
Q

Prevention of slobbers

A

Lava stone, regular dental care, free choice hay

43
Q

Bloat in chins is caused by what?

A

Lactating females
Sudden changes in food
Overeating of clover hay

44
Q

Why is ectopic pregnancy a concern in chins?

A

They don’t have an ovarian bursa

45
Q

8 repro issues in female chins

A
  1. Fetal resorption (high rate in chins)
  2. Dystocia
  3. Ectopic pregnancy
  4. Pulmonary trophoblastic emboli
  5. Retained placenta
  6. Paraphimosis
  7. Endometrial hyperplasia and chronic endometritis
  8. Stump pyometra
46
Q

Neoplasia is common in chins - T or F?

A

F

47
Q

Urogenital disorder in chins

A

Urolithiasis

48
Q

Heat stroke can happen in chins when?

A

Temps over 80F

49
Q

Fur chewing can lead to what in chins?

A

Trichobezoars

50
Q

4 reasons why chins are used in auditory and vestibular research

A
  1. Large bullae
  2. Lack of susceptibliity to middle ear infections
  3. Auditory capabilities close to humans
  4. Absence of presbycusis (loss of hearing in older humans)