Dermatophilus

Question 1

Habitat; D. congolensis

Answer 1

soil, skin

Question 2

Morphology; D. congolensis

Answer 2

Coccoid - filaments

Question 3

Staining; D. congolensis

Answer 3

Gram-positive

Certain replication cycle

Question 4

Culture; D. congolensis

Answer 4

• Aerobic
• Fastidious -> blood agar
• Propagation: flagellated coccus (zoozpora), filaments - branching - growth -> spores, transverse and longitudinal divisions - segments, zoozpora
• Hemolytic
• Proteolytic

Question 5

Biochemistry; D. congolensis

Answer 5

Proteolytic
Poorly saccharolytic
(3 bacteria with these proteins, 1 mentioned already)

Question 6

Pathogenicity; D. congolensis

Answer 6

Exudative dermatitis
Sheep, cattle, human
- mainly Ru, skin and hair feels wet -> increase motility

Question 7

Habitat; Streptomyces

Answer 7

soil

Question 8

Morphology; Streptomyces

Answer 8

Large, branched filaments

Special salt smell

Question 9

Pathogenicity; Streptomyces

Answer 9

Absolute saprophyte

Question 10

Staining; Streptomyces

Answer 10

Gram-positive

Question 11

Culture; Streptomyces

Answer 11

Not fastidious
Special salt smell
Can produce a large amount of antibiotics

Question 12

Species; Streptomyces

Answer 12

S. griseus: streptomycin (ab)
S. fradiae: neomycin (ab)
S. rimosus: oxytetracyclin (ab)
s. venezuelae: chloramphenicol (ab)