Forest and Forest Uses: Meaning and Types of Forests

Home » Forest and Forest Uses: Meaning and Types of Forests
You must complete Introduction to Fishery to unlock this Lesson.

RISK FACTORS IN WATER AND FISH FARMING

CONTENT
  1. Risk Factors in Water and Fish Farming
  2. Fishing Tools
 

Risk Factors in Water and Fish Farming

These have to do with factors that are capable of causing water pollution and danger to fish and other aquatic organisms. Some of the risk factors in water and fish farming include:

1. Use of chemicals

When residues of these chemicals used by farmers in farming activities are washed by rain water into a nearby river, stream, pond etc. that body of water will be contaminated and the lives of the fish in such water body will be at risk.

2. Discharge of petroleum oil into water bodies

Accidental or deliberate discharge of petroleum oil into water bodies can be a major risk factor in marine ecosystem

3. Industrial effluents and sewage discharge

Industrial effluents discharged from food processing plants, paper mills, breweries, tanneries etc. into small and large water bodies can pollute the fish environment and have negative impact on aquatic ecosystem.

4. Domestic waste

Waste water resulting from domestic sewage (human faeces and urine, small washing, food processing or preparation and cleaning of utensils) that are in most cases channeled into water bodies can cause depletion of oxygen  

Fishing Tools

The fishermen used different types of fishing in Nigeria. The most common ones among others are:
  1. Hooks and Lines or Rod and Line
  2. Nets (Cast and Throw Nets, Gill Nets, Seine Nets, Lift Nets, scooping net, clap net)
  3. Spears (Harpoons)
  4. Gourds
  5. Fishing Cages
  6. Baskets
  7. Pots
  8. Fishing spears
  9. Fishing trap
  EVALUATION 1. Explain the following risk factors in water and fish farming. (i) Accidental discharge of petroleum oil into water bodies. (ii) Use of chemicals such as Gamalin 20 to harvest fish.

Lesson tags: Agricultural Science Lesson Notes, Agricultural Science Objective Questions, JSS2 Agricultural Science, JSS2 Agricultural Science Evaluation Questions, JSS2 Agricultural Science Evaluation Questions Third Term, JSS2 Agricultural Science Objective Questions, JSS2 Agricultural Science Objective Questions Third Term, JSS2 Agricultural Science Third Term
Back to: Agricultural Science – JSS2 (Upper Basic 8) > Third Term

Can’t View the Complete Lesson?

All new subscriptions are on game mode by default. This implies that you must complete lesson 'A' to unlock 'B'. To do this, you need to pass the test on 'A'.

Game mode helps students absorb and retain content, but teachers may want it disabled to grant them direct access to any lesson. To prevent abuse of the platform, only users on a Termly plan or higher can get it disabled.

For help with this, please contact us on any of our helplines.
© [2022] Spidaworks Digital - All rights reserved.
error: Alert: Content is protected !!