Aquaculture_Tools_and_Fishing_Gears_Presentation.pptx

This lesson covers the tools and fishing gears used in Aquaculture

1. Tools and Fishing Gears in Aquaculture Understanding Equipment Used in Sustainable Fish Farming

2. Lesson Objectives Identify key tools used in aquaculture. Describe various fishing gears and their uses. Appreciate the importance of proper equipment in sustainable aquaculture.

3. Secchi Disk

4. Dissolved Oxygen Meter

5. Fish Trap (Salakab)

6. Salinometer / Refractometer

7. pH Meter

8. Laboratory Thermometer

9. Water Pump

10. Why Are Tools and Gears Important in Aquaculture? Ensure efficient operation Maintain water quality Promote healthy aquatic life Improve harvesting methods

11. Water Pump

12. Water Pump Ensures constant water movement Types: Engine, electrical, or wind-driven Prevents stagnation and promotes oxygenation

13. Laboratory Thermometer

14. Laboratory Thermometer Monitors water temperature Essential for species-specific temperature ranges Ensures optimal growth and health

15. Salinometer / Refractometer

16. Salinometer / Refractometer Measures water salinity Vital in brackish or marine aquaculture Prevents stress from salinity changes

17. Dissolved Oxygen Meter

18. Dissolved Oxygen Meter Measures oxygen levels in water Fish need oxygen for growth and survival Low oxygen leads to poor growth or death

19. pH Meter

20. pH Meter Measures acidity or alkalinity Ideal pH: 6.5–8.5 Prevents diseases and ensures growth

21. Secchi Disk

22. Secchi Disk Measures water turbidity Lowered into water until it disappears Helps assess water clarity

23. Fish Trap (Salakab)

24. Fish Trap (Salakab) Made of bamboo Small opening traps fish Used in rivers and lakes

25. Fish Nets Overview Scoop net Seine net Cast net

26. SCOOP NET

27. SEINE NET

28. Cast net

29. Scoop, Seine, and Cast Nets Scoop Net – Shallow water, portable Seine Net – Vertical net with weights and floats Cast Net – Circular, thrown over fish

30. Hand Diggers and Collectors

31. Hand Diggers and Collectors Used to gather shellfish/crustaceans Tools: hand digger, scoops, buckets For clams, oysters, crabs

32. Dredges

33. Dredges Scrapes ocean floor Towed by boats Used for scallops, mussels, oysters

34. Spears

35. Spears Uses spears or harpoons Traditional and modern methods Effective in shallow waters

36. Hooks and Lines

37. Hooks and Lines Parts: Hook, Line, Bait Most widely used gear Adaptable for many fish types

38. Stationary Entangling Nets

39. Stationary Entangling Nets Gill nets with floats and weights Types: Encircling, drift, set nets Fish get entangled in net

40. Mobile Enclosing Nets

41. Mobile Enclosing Nets Examples: Purse seine, ring nets Encircle schools of fish Used while moving

42. Stationary Enclosures Traps with funnel-like entrances Fish can't escape once inside Used in fish farming

43. Summary Tools maintain water quality and organism health Gears improve fish harvesting efficiency Proper use promotes sustainability and productivity

44. Check Your Understanding Match the tool or gear with its function: 1. ___ Salinometer 2. ___ Scoop net 3. ___ Dissolved oxygen meter 4. ___ Dredge

45. Methods of basic fishing baits

46. LIVE BAIT /NATURAL Using small creatures like worms, crickets, or grasshoppers wherein their movement copies natural prey to attract fish.

47. Cut bait Are pieces or chunks of fish wherein the strong smell attracts the fish from a distance

48. Dough Balls IS made from flour cornmeal and water. They are simple but effective bait.

49. Modern bait

50. Artificial Lures Man-made baits designed to mimic the movement and appearance of fish prey.

51. Soft plastics Resemble live bait but are more durable. They can be rigged in various ways and are effective in catching fish.

52. Scented baits Modern baits often come pre-scented to attract fish.