Question

Match List I with List II:
List I (Parasite)
A. Avitellina centripunctata
B. Raillietina cesticillus
C. Davainea proglottina
D. Amoebotaenia cuneata
List II (Intermediate host)
I. Beetels
II. Earthworms
III. Psocids
IV. Gastropod molluscs
Choose the correct answer from the options given below:

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

Hint:

Associate Davainea proglottina (the highly pathogenic dwarf poultry tapeworm) with slugs/snails (molluscs), and Raillietina cesticillus (the beetle tapeworm) with beetles to solve matching questions rapidly.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Cestodes (tapeworms) of veterinary importance require one or more intermediate hosts to complete their indirect life cycles.
The larval stage (cysticercoid) develops within invertebrate intermediate hosts such as insects, mites, earthworms, or molluscs.
Matching parasites to their specific intermediate hosts is essential for understanding transmission dynamics and implementing farm control measures.

Step 2: Detailed Explanation:
Let us analyze each pair:
1. Avitellina centripunctata (A):
This is a fringed tapeworm found in the small intestine of sheep, goats, and other wild ruminants.
Its life cycle involves booklice or barklice belonging to the order Psocoptera (Psocids) as intermediate hosts.
Thus, A matches with III.
2. Raillietina cesticillus (B):
This is a common tapeworm of poultry.
It utilizes various species of dung beetles and ground beetles (such as those from the families Carabidae and Tenebrionidae) as intermediate hosts.
Thus, B matches with I.
3. Davainea proglottina (C):
Commonly known as the dwarf tapeworm of poultry, it is highly pathogenic and resides in the duodenum.
Its intermediate hosts are terrestrial slugs and snails (Gastropod molluscs).
Thus, C matches with IV.
4. Amoebotaenia cuneata (D):
This is a small, wedge-shaped tapeworm found in the intestine of poultry.
It utilizes earthworms (such as Eisenia foetida) as its intermediate hosts.
Thus, D matches with II.
Combining these matches:
A-III, B-I, C-IV, D-II.

Step 3: Final Answer:
The correct matching sequence is A-III, B-I, C-IV, D-II.
Therefore, the correct answer is option (B).