Question

Match List I with List II

Choose the correct answer from the options given below:

• A. A - I, B - II, C - III, D - IV
• B. A - II, B - III, C - IV, D - I
• C. A - IV, B - I, C - II, D - III
• D. A - III, B - IV, C - I, D - II

Hint:

To solve quickly: White tail disease is a well-known disease of freshwater prawns Scampy (D - II). Whirling disease is a classic parasite problem of Salmonids Trouts (C - I). This isolates option (D) as the correct choice.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Aquatic pathogens include bacteria, viruses, and parasites that infect diverse marine and freshwater hosts.

Step 2: Detailed Explanation:
Let us establish the correct matches between the pathogens/diseases and their descriptions:
- A. {Aeromonas hydrophila: A Gram-negative bacterium that causes motile aeromonad septicemia, characterized by severe bleeding, hence known as Haemorrhagic septicemia (III) in freshwater fishes.
- B. {Vibrio anguillarum: The principal causative bacterium of the marine disease Vibriosis (IV) in marine and brackishwater finfishes.
- C. Whirling disease: A highly destructive disease of salmonids, primarily affecting Trouts (I), caused by the myxosporean parasite Myxobolus cerebralis.
- D. White tail disease: A devastating viral disease of giant freshwater prawn larvae (Macrobrachium rosenbergii), commonly known in India as Scampy (II), caused by MrNV (Macrobrachium rosenbergii nodavirus).
Therefore, the correct match is: A - III, B - IV, C - I, D - II.

Step 3: Final Answer:
This sequence of matches corresponds to option (D).