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Aeromonas: Gram-negative Facultative Anaerobic Rods

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Questions and Answers

What is the optimal temperature range for the growth of Aeromonas species in trypticase soy agar?

15 to 20°C
10 to 15°C
20 to 25°C (correct)
25 to 30°C

Which species of Aeromonas is considered the primary etiologic agent for red syndromes in fishes and amphibians?

A. hydrophila (correct)
A. salmincola
A. caviae
A. shigelloides

Which of the following is NOT a common reservoir of infection for Aeromonas species?

Stools
Bile
Blood (correct)
Throat

What is the primary mode of transmission for Aeromonas infections?

Ingestion of contaminated food or water (D) Signup and view all the answers

Which of the following is a characteristic of the Aeromonas species?

They are gram-negative, short, plump aerobic rods (C) Signup and view all the answers

Which of the following is a preferred culture medium for the isolation and cultivation of Aeromonas?

Rimler-Shotts Medium (C) Signup and view all the answers

What is the recommended treatment for Aeromonas infection in fish?

Oxytetracycline (60-75 mg/kg for 21 days) (D) Signup and view all the answers

Which of the following is a key control and prevention measure for Aeromonas infection in fish?

Obtaining fish and eggs from disease-free sources (D) Signup and view all the answers

Which Francisella species is commonly associated with animal infections?

All of the above (D) Signup and view all the answers

What is the primary mode of transmission for Francisella species that infect animals?

Ingestion of infected prey, feed, and water (C) Signup and view all the answers

Which of the following is a key virulence factor of Aeromonas?

Both adhesins and enterotoxins (C) Signup and view all the answers

What is a characteristic of Actinobacillus colonies?

Are typically non-hemolytic (C) Signup and view all the answers

Which of the following is true about Actinobacillus species' reservoir of infection?

Can be present in both sick and carrier animals (C) Signup and view all the answers

What is a common disease associated with Actinobacillus species?

Porcine pleuropneumonia (B) Signup and view all the answers

Which of the following is a feature of Actinobacillus colonies' growth characteristics?

Exist in both hemolytic and non-hemolytic forms (C) Signup and view all the answers

What is a common mode of transmission for Actinobacillus species infections?

Direct contact with infected animals (B) Signup and view all the answers

Which enzyme is produced by Actinobacillus species related to carbohydrate metabolism?

Urease (B) Signup and view all the answers

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