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DIFFERENCES BETWEEN MONOGASTRIC AND RUMINANT ANIMAL DIGESTIVE SYSTEM

DIFFERENCES BETWEEN MONOGASTRIC AND RUMINANT ANIMAL DIGESTIVE SYSTEM MONOGASTRIC ANIMAL RUMINANT ANIMALS Possesses only one stomach 1. Po...

fishing implements and uses



fishing instruments

there are so types of fishing gadgets but we shall be examining just a few of them.

Use of nets:

Nets are made of nylon and are used for fishing both in large and small bodies of water.

Net fishing is very efficient because many fishes can be caught at a time with a net.

There are different forms of net used for fishing.

These are:

(i) The cast or throw nets

(ii) The gill nets

(iii) The lift nets









(iv) The hand net or scoop net.

(b)

Use of hooks:

A hook is made of metal rod which is curved at the tip. Fishing hooks are of two kinds:

(i) The pole and line hook: This consists of a hook to which a twine is tied, which in turn, is tied to a long pole or stick.
A weight or float (could be a small stone or metal nut) is tied to the rope to enable the hook go down the water.

Fish is attracted to the hook by a bait (e.g. earth worm) attached to it.
an article on tapeworm here
When a fish attempts to eat the bait, its mouth is hung to the hook and the fisher quickly throws out the honk from the water to remove the fish.
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The method is time and labour consuming. Only one fish can be caught with this method it a time.

A Pole and Line Hook.


(ii) Long line hook: This consists of several hooks tied to a long line. The whole line is then tied across the course of the stream.


Baits are attached to each hook. This can be left for a long time, while checking to see if any of the hooks has caught a fish as well as to replace the baits. Many fishes can be caught at a time with this method. DIAGRAM Figure 3.9.12: Long Line Hook.

(c)
Use of baskets
Baskets are mainly used in fish pond. They are placed through the water to catch the fishes in it. Baskets are used in periodic periodic harvesting by selecting only large fishes from tin- entire catch and throwing back the under-sized ones into smaller containers.
Many fishes can be caught with baskets at a time.

(d)
Use of fish traps:
These are woven materials usually with canes, rid, ropes or wires.
They are designed in different shapes and sizes. When placed in water, fishes are attracted into them by baits placed inside.
When the fishes enter, they cannot come out. Hand net Cast net Drag net Fishing trap










Fishing nets and trap.


(e)
Use of spear or harpoon
This is used for large fishes like the shark. It is not however a very common method these days.

(f)
Drainage:
This is common in ponds or shallow streams which can be blocked to drain away water. The fishes are then easily. It is used for total harvesting in ponds.

(g)
Use of fishing trawlers
, boats or canoes: These are means of transportation in water.
They enable the fishermen to go into the water from which they can cast nets or set out hooks to catch fishes

read about aquaculture here
1.
Bad Fishing Methods


The following are considered bad "methods of fishing and should not be used:

1.
Use of poisons, or chemicals such as gamahalin 20

2.
Use of explosives such dynamites

3.
Electric stunning
that is, passing electric current into the water to stun or electrocute the fishes before they are picked.

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HERE YOU WILL FIND EVERY AVAILABLE TOPICS ABOUT AGRICULTURAL SCIENCE AND BIOLOGY. AND THE LINKS TO THEIR VARIOUS SOURCES.


48. BIOTIC FACTOR AND AGRICULTURAL PRODUCTION
49. PESTS
50. BIRDS
51. DISEASES
52. SOIL MICRO-ORGANISMS


126. CROP ROTATION
133. FARM POWER AND MACHINERY
134. SOURCES OF FARM POWER
135. HUMAN SOURCE
149.
PLOUGHS
142.
FIELD MACHINES
157.
PLANTERS
164.
SIMPLE FARM TOOLS
165. AGRICULTURAL MECHANIZATION
166. THE CONCEPT OF MECHANIZATION






you can read my other article on modern system and techniques in fishing here