Question

Tiger shrimp normally attains maturity in

• A. 5-6 months
• B. 10-12 months
• C. 6-8 months
• D. 14-15 months

Hint:

Shrimp Maturation Times:
Tiger Shrimp (Penaeus monodon) = 10 - 12 MONTHS (Offshore marine waters).
Pacific White Shrimp (L. vannamei) = 6 - 8 months.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Life cycle and reproductive biology of Penaeus monodon: tiger shrimp reach sexual maturity and full adult broodstock size in deep marine waters at 10 to 12 months of age.
Key Formula or Approach:
\[ \text{Penaeus monodon Life Cycle: Post-Larvae } (0 \text{ mo}) \rightarrow \text{Grow-out Size } (4 - 5\text{ mo}) \rightarrow \text{Adult Sexual Maturity } (10 - 12\text{ Months, } > 100\text{ g}) \]

Step 2: Detailed Explanation:
In the reproductive biology of Giant Tiger Shrimp (Penaeus monodon):
- P. monodon exhibits an estuarine-marine migratory life cycle:
1. Juveniles grow rapidly in nutrient-rich coastal estuaries and brackishwater ponds for 4 to 6 months (reaching commercial harvest size of $30 - 45\text{ g}$).
2. Sub-adults migrate into deep offshore marine waters ($20 - 70\text{ m}$ depth) to undergo final physiological and gonadal maturation.
3. Complete sexual maturity and spawning competence (females reaching $> 100 - 150\text{ g}$ and fully developed thelycum/petasma) is achieved at 10 to 12 months of age.

Step 3: Final Answer:
Therefore, tiger shrimp normally attains maturity in 10-12 months, corresponding to option (B).