Q.26
Fisheries Resource Management- ICAR JRF/SRF 2024
MCQ (Single Correct)
The Trophic Level of top level predatory fish will be between
- Trophic Levels in Aquatic Ecosystems:
- Trophic level (TL) reflects an organism's position in the food web based on dietary carbon transfer:
- $\text{TL} = 1.0$: Primary producers (phytoplankton, aquatic macrophytes, benthic microalgae).
- $\text{TL} = 2.0-2.5$: Herbivores and primary consumers (zooplankton, herbivorous carps, phytophagous snails).
- $\text{TL} = 2.5-3.5$: Omnivores and secondary consumers (small pelagic planktivores like sardines, anchovies).
- $\text{TL} = 3.5-4.0$: Mid-level carnivores / piscivores (croakers, ribbonfishes).
- $\text{TL} \gt 4.01$: Top-level / apex predatory fishes (large pelagic tunas, billfishes, swordfish, pelagic sharks, marine mammals).
- Correct Option: Option 2 ($\gt 4.01$).
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