ARUNACHAL PRADESH pUBLIC SERVICE COMMISSION, ITANAGAR
FISHERIES SCIENCE -PAPER
Time: 3 (three) hours Marks: 100
SECTION: A (AQUACULTURE)
1.
Write a brief account offreshwater aquaculture systems that prevails in India Or

Write the classification of aquatic weeds based on their habitats and their control
measures in general.


2.
Write notes on (any 12) Carrying capacity of pond Sewage fed fisheries Types of organic manures Criteria for selecting a fish species for aquaculture Importance of Iivefish food organisms in aquarium fish Overwintering ponds Integrated fish culture Ichthyophthirius multifilies


Balanced diet in aquaculture
Control of predatory fishes

3. Answeranytwoofthefollowing (2x6=12)
I. Give an account of oyster farming systems.
II. What are the sexual dimorphisms in Indian major carps? Write on brood-stock management of carps.
III. What do you understand by prophylaxis and chemotherapy? Write on common bacterial diseases that are found in Arunachal Pradesh and their controlmeasures.
IV. Write about the Coldwater fisheries in North Eastern region of India.
FOjEO-2016-B Page 1 SECTION: B (FISHERY BIOLOGy)
4.
What are the differences between penaeid and non-penaeid prawns? Discuss the feeding habits of panaeid prawns. 10)

Or
Write about the food and feeding habits of Indian major carps.


5.
Answer any three of the following 12)


I. Give the scientific name of brine shrimp. Write briefly on importance ofbrine shrimp in aquaculture.
II. Define oviparous and viviparous fish with examples
III. Describe the special features of lung fish and give examples
IV.
Distinguish between innate and acquired immunity of fish

V.
Define bacteria and write the growth phases ofbacteria


VI. Pelagic fishery resources of India
6. Answer any two of the following 10)
Write the differences between prokaryote and eukaryote.
Mention the living characteristics exhibited by a virus.
Write the general characters of phylum mollusca.
What is fish biodiversity? What are the threats to fish diversity.

SECTION: C (FISHERY HYDROGRAPHy)
7.
What is EI-Nino? Discuss briefly the effects of El-Nino on world fisheries 10) Or

Define pH. Write on importance of liming in fish culture ponds. How do you calculate the lime requirement of a fish pond?

8.
Answer any four of the following 12)


i. Important water quality parameters for warm water fish culture, indicating their optimum range.
ii. Vertical migration of plankton.
iii. Differentiate the gross primary productivity and net primary productivity.
iv.
Classify the lakes based on their productivity status.

v.
Algal bloom.


vi. Role of GPS and Remote sensing in freshwater fisheries development in a state.
vii. Differentiate BOD and COD of a water body.
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9. Write short notes on any three of the following. 12)
Total alkalinity
Sewage treatments and its reuse
Eutrophication
Environmental impact assessment for fisheries and aquaculture projects
Mud banks
Indices ofbiodiversity

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