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Exotic and Laboratory Animals > Hamsters > Flashcards

Hamsters Flashcards

1
Q

What is the genus and species of the Syrian or golden hamster?

A

Mesocricetus auratus

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2
Q

What is the genus and species of the Chinese Hamster?

A

Cricetus griseus

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3
Q

What is the genus and species of the Armenian or grey hamster?

A

Cricetulus migratorius

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4
Q

What is the genus and species of the European hamster?

A

Cricetus cricetus

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5
Q

What is the genus and species of the Djungarian hamster or dwarf hamsters?

A

Phodopus sungorus

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6
Q

What is the average life span of hamsters?

A

18-36 months

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7
Q

What is the recommended environmental humidity for hamsters?

A

40-60%

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8
Q

What is the age of puberty of the male hamseter?

A

8 weeks

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9
Q

What is the age of puberty of the female hamster?

A

6 weeks

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10
Q

What is the length of the hamster estrus cycle?

A

4-5 days

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11
Q

What is the length of gestation in hamsters?

A

15-18 days

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12
Q

What is the average litter size of hamsters?

A

5-10

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13
Q

What is the weaning age of hamsters?

A

19-21 days

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14
Q

What makes hamsters good animal models?

A

Short gestation period

Virtually free of spontaneous disease

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15
Q

What do hamsters have behind their eyeballs?

A

Harderian glands

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16
Q

What are hamsters born with?

A

A full set of teeth

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17
Q

Hamster teeth resemble human crowns, which makes them susceptible to what?

A

Caries

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18
Q

What is an immunologic privileged site and large evaginations of the lateral buccal wall?

A

Cheek pouches

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19
Q

What does Hamster mean in german?

A

Hoarder

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20
Q

Cheek pouches are excellent sites for what?

A

Evaluation of carcinogenic potential of agents

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21
Q

What are hamsters susceptible to?

A 
Diabetes mellitus
Human leprosy
Brucellosis
Dental caries
Gallstones
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22
Q

Why are hamsters good for hypothermia studies?

A

Hibernation

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23
Q

What breed of hamsters are resistant to radiation?

A

Syrian and Chinese hamsters

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24
Q

Why are hamsters food for reproductive studies?

A

Short life span and rapid reproductive rate

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25
Q

Females are what?

A

Continuously polyestrous

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26
Q

Are hamster pups born precorcious?

A

No

They are hairless with eyes and ears closed

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27
Q

Lak: LCG(SYR)

A

Golden Syrian

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28
Q

MHA/SsLak

A

White with pink eyes

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29
Q

PD4/Lak

A

White with pink eyes

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30
Q

LSH/SsLak

A

Brown and White

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31
Q

CB/SsLak

A

Brown and White

32
Q

LHC/Lak

A

Cream-colored variety

33
Q

Are Hamsters nocturnal?

A

Yes

34
Q

At what temperatures do Hamsters hibernate?

A

less than 5 C

35
Q

How long does hibernation last?

A

3 days

36
Q

Can females be aggressive?

A

Yes to other adults of both sexes

Can be vicious and fatal

37
Q

What is the best humidity to keep hamsters in?

A

65 to 70 F

38
Q

What type of injection is not practical?

A

IM due to small muscle mass

39
Q

What injectable medications are used to induce anesthesia in a hamster?

A

Ketamine and xylazine

IP injection

40
Q

Do you fast hamsters before anesthesia?

A

No because of their high metabolism and risk of hypoglycemia and hypothermia

41
Q

What type of blood collection is not performed in hamsters due to high probability of cardiac tamponade

A

Cardiocentesis

42
Q

What is the most common infectious disease in hamsters?

A

Proliferative ileitis

43
Q

What is Proliferative Ileitis also known as?

A

Wet tail
regional enteritis
Transmissible ileal hyperplasia

44
Q

What causes Proliferative Ileitis?

A

Lawsonia intracellularis

45
Q

What are the clinical signs of Proliferative ileitis?

A 
Watery diarrhea
Dehydration
Anorexia
Depression
moist matted fur on the tail & ventral abdomen 
Gross lesions 
Intestinal epithelium is hyperplastic
Ilieal obstruction
impaction
46
Q

What happens to affected animals?

A

They may die within 48 hours

47
Q

How do you treat Proliferative Ileitis?

A

Antimicrobial therapy
Isolation
Minimize stress

48
Q

What can reach epidemic proportions fairly quickly?

A

Proliferative Ileitis

49
Q

Treatment for bacterial infections make hamsters susceptible to what?

A

Antibiotic-Associate Enterocolitis

50
Q

What antibiotics may have toxic effects in hamsters?

A 
Penicillin
Erythromycin
Gentamicin
Ampicillin
Cephalosporins
51
Q

Administration of what is thought to allow for overgrowth of what bacteria?

A

Clostridium difficile

52
Q

What are the clinical signs of Antibiotic-Associated Enterocolitis?

A

Anorexia
Dehydration
Rough hair coat
Copious diarrhea

53
Q

What other bacterial diseases are Hamsters susceptible to?

A

Tyzzer’s Disease
Pasterurella pneumotropica
Staphylococcus pnemoniae

54
Q

What are the clinical signs of a Pasteurella pneumotropica and Staphylococcus pnemoniae infection?

A 
Depression 
Anorexia
Nasal and ocular discharge
Respiratory distress
Chattering
55
Q

How do you treat a Pasteurella pneumotropica and Staphylococcus pnemoniae infection?

A

Antibiotics

Eliminate environmental stresses

56
Q

What are hamsters carriers of?

A

Camplyobacter jejuni

57
Q

What clinical signs does Camplylobacter jejuni cause?

A

Hamsters are asymptomatic

It can infect humans and may cause disease if hamsters are stressed

58
Q

What viral diseases are hamsters susceptible to?

A

Lymphocytic Choriomeningitis
Parvovirus
Polyoma virus

59
Q

Hamster parvovirus is associated with what?

A

High mortality of weanlings

60
Q

What are the clinical signs of parvovirus?

A

Incisor abnormalities
Testicular atrophy
Domed crania

61
Q

What are the clinical signs of Polyoma virus?

A

Epitheliomas on the face, neck, flank, or abdomen

62
Q

Infection with what is possible in hamsters though usually unheard of?

A

Dermatophytes

63
Q

Are hamsters infected with the same parasites as gerbils and rats?

A 
Yes
Rodentolepis nana
Syphacia oblvelata
Syphacia muris
Demodex criceti
Demodex aurati
64
Q

What is the most common benign neoplasia of hamsters?

A

Gastrointestinal polyps

Adenomas of the adrenal cortex

65
Q

What are the malignant tumors of hamsters?

A

Lymphosarcoma

Gastrointestinal or adrenal carcinoma

66
Q

What is the most common cause of death in aged hamsters?

A

Amyloidosis

67
Q

What does Amyloidosis result in?

A

Amyloid deposits in the glomeruli of the kidney

68
Q

What are the clinical signs of amyloidosis?

A

Anorexia
Rough hair coat
Depression

69
Q

What has been a suggested as a factor for the development of Amyloidosis?

A

Genetics

70
Q

What is the treatment of Amyloidosis?

A

No effective treatment available

71
Q

Occurance of what is high in hamsters older than 1 year?

A

Polycystic Disease

72
Q

What is the most commonly affected site of Polycystic Disease?

A

The liver

73
Q

Are the lesions caused by Polycystic disease usually clinically significant?

A

No

74
Q

Older hamsters are prone to what?

A

Cardiomyopathy and atrial thrombosis

Earlier in females

75
Q

What are hamsters very sensitive to?

A

Vitamin E deficiency

76
Q

What can Vitamin E deficiency lead to?

A

Skeletal muscular atrophy

77
Q

What is Vitamin E deficiency a problem in?

A

Hamsters only fed a seed-based diet

Exotic and Laboratory Animals (22 decks)

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