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Bacteriology > E2 Genus Mycoplasma > Flashcards

E2 Genus Mycoplasma Flashcards

1
Q

What is unique about Mycoplasma bacteria?

A

Smallest free-living unicellular organism

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2
Q

What is special about the structure of Mycoplasma bacteria?

A

Lack a cell wall

= No peptidoglycan

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3
Q

What tissue are Mycoplasma bacteria trophic for?

A

Mucus membranes

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4
Q

How host specific are Mycoplasmas?

A

Very host-specific

= NOT zoonotic

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5
Q

What is unique about the appearance of colonies of Mycoplasma bacteria in culture?

A

Fried-egg appearance

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6
Q

How does Mycoplasma infect host cells?

A

It doesn’t!

associates with the surface

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7
Q

What are the two most effective methods of diagnosing Mycoplasma infection?

A
  1. Clinical signs

2. Serology (only bacteria so far where this is good)

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8
Q

Are there vaccines against Mycoplasma infection?

A

Yes

but only decrease severity and mortality

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9
Q

What clinical signs are caused by Mycoplasma bovis?

A
  1. Mastitis
  2. Polyarthritis
  3. Pneumonia
  4. Otitis in calves
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10
Q

What species causes highly fatal bovine suppurative pleuropneumonia?

A

Mycoplasma mycoides ssp. mycoides SC

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11
Q

Where are Mycoplasma mycoides ssp. mycoides SC infections found?

A

Asia and Sub-Africa

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12
Q

Is there a vaccine against Mycoplasma mycoides ssp. mycoides SC?

A

Yes

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13
Q

What is the most common clinical sign in calves with Mycoplasma mycoides ssp. mycoides SC infection?

A

Unilateral otitis

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14
Q

Are some species of Mycoplasma commensals?

A

Yes!

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15
Q

What two species of Mycoplasma are pathogenic in sheep & goats?

A
  1. Mycoplasma mycoides ssp. capri

2. Mycoplasma capripneumoniae

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16
Q

Why are the pathogenic Mycoplasma species in sheep & goats so good at causing pneumonia?

A

Causes ciliostasis

slows clearance of mucus

17
Q

What species causes mastitis in sheep & goats?

A

Mycoplasma agalactiae

18
Q

What species causes pneumonia in swine?

A

Mycoplasma hyopneumoniae

19
Q

What is the disease name for infections from Mycoplasma hyopneumoniae?

A

Enzootic pneumonia

20
Q

What are the most common clinical signs of Mycoplasma hyopneumoniae in pigs?

A
  1. Chronic cough (damages cilia)
  2. transient diarrhea
  3. Reduced weight gain
21
Q

What is the prevalence of Mycoplasma hyopneumoniae infection in pigs?

A

Very common

22
Q

What species of Mycoplasma is a commensal in swine?

A

Mycoplasma hyorhinis

23
Q

What are two species that seem to be unaffected by Mycoplasma infection?

A

Dogs & horses

24
Q

What species of Mycoplasma caused fatal conjunctivitis in house finches?

A

Mycoplasma gallisepticum

25
Q

What species of Mycoplasma causes synovitis in poultry?

A

Mycoplasma synoviae

26
Q

What species of Mycoplasma causes severe disease in turkeys and is of great economic importance?

A

Mycoplasma meleagridis

27
Q

What ages are most affected by Mycoplasma meleagridis infection?

A

Young turkeys

infected by adult carriers

28
Q

What disease is caused by Mycoplasma felis?

A

Conjunctivitis in kittens

29
Q

Can Mycoplasma felis be a commensal bacteria in cats?

A

Yes!

30
Q

What disease is caused by Mycoplasma haemofelis?

A

Feline infectious anemia

31
Q

How is Mycoplasma haemofelis transmitted?

A
  1. Arthropod vectors

2. Rat bites

32
Q

What cells does Mycoplasma haemofelis infect? Where does the bacteria set up shop?

A

RBCs

On the surface of the cell

33
Q

What test is most useful to diagnose Mycoplasma haemofelis in cats?

A

Coombs-positive

antibody test

34
Q

Can infected cats become carriers? For how long?

A

Yes

For life!

Bacteriology (13 decks)

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