Sampling Methodology for Marine Fisheries Statistics:
Stratified Multistage Random Sampling Design (SMRSD): Developed and standardized by ICAR-CMFRI to systematically estimate marine fisheries data along India's extensive coastline.
Parameters Estimated:
Marine Fish Landing: Total catch by species, group, and landing center over time.
Marine Fishing Effort: Number of craft-gear units operated, fishing hours, and boat-days.
The sampling stratification accounts for space (maritime states divided into zones and landing centers) and time (calendar months stratified into 10-day clusters of days and diurnal landing hours).
Correct Option: Option 3 (Marine Fish Landing and Effort).
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2
ICAR JRF Fish Processing Technology 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
The Trophic Level of top level predatory fish will be between
Symbiosis: Represents a direct, intimate, inter-specific ecological relationship between two living organisms (including mutualism, commensalism, and parasitism). Classic examples include clownfish and sea anemones, or corals and zooxanthellae.
Photosynthesis and respiration are physiological biochemical metabolic pathways, while bacterial ammonification is a nutrient cycling biochemical transformation.
Correct Option: Option 3 (Symbiosis).
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4
ICAR JRF Fish Processing Technology 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
The definitive indication of a "spawning" ovary in finfish histology is the presence of
In teleost ovarian histology, maturity stages progress through primary growth, cortical alveoli, vitellogenesis, maturation, ovulation, and post-spawning.
Hydrated Oocytes: During Final Oocyte Maturation (FOM), oocytes take up water rapidly, causing coalescence of yolk spheres, clearing of cytoplasm, and massive volumetric swelling (hydration). The presence of fully hydrated, translucent oocytes is the definitive, pathognomonic histological hallmark of an actively spawning (running-ripe) ovary immediately prior to ovulation.
Post-ovulatory follicles (POFs) indicate past spawning that has already concluded.
Correct Option: Option 2 (Hydrated oocytes).
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5
ICAR JRF Fish Processing Technology 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
The von Bertalanffy equation deals with the following in fish
Formulated by Ludwig von Bertalanffy (1938), this is the standard mathematical model used in fisheries science and fish population dynamics to describe somatic growth:
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