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Showing posts with label Processing and Preservation of Fish. Show all posts
Showing posts with label Processing and Preservation of Fish. Show all posts

Fishing Techniques and methods


methods of fishing

Fishing techniques are methods for catching fish. The term may also be applied to methods for catching other aquatic animals such as molluscs and marine invertebrates or vertebrates
Fishing techniques includes the use of hand in gathering, spearfishing, netting, angling and trapping. commercial and artisanal fishers use different techniques, and also, sometimes, the same techniques. Recreational fishers fish for pleasure or sport, while commercial fishers fish for profit. Artisanal fishers use traditional, low-tech methods, for survival in third-world countries, and as a cultural heritage in other countries. Mostly, recreational fishers use angling methods and commercial fishers use netting methods.

There is an intricate link between various fishing techniques and knowledge about the fish and their behaviour including migration, foraging and habitat. The effective use of fishing techniques often depends on this additional knowledge.
Which techniques are appropriate is dictated mainly by the target species and by its habitat

Fishing techniques can be contrasted with fishing tackle. Fishing tackle refers to the physical equipment that is used when fishing, whereas fishing techniques refers to the manner in which the tackle is used when fishing
Common types of fish
Some common types of fish include







Common name Scientific name
Tilapia Sarotherodo niloticus
Cat fish Haters branchus spp
Snake head fish Channa obscura
Trunk fish Gymnarchus niloticus
Milk fish Chanos chanos
Moon fish Citharinus spp
Mullet Mugil spp
Carp Cyprilius carpia
Mud fish Clarias spp
African bony tongue Heterotis niloticus

9.5 Use of Fish and Fish Products
1. Food
Fish is eaten by man as part of his diet and is a good source of protein.
2. Source of income
Fishes are sold for money and this provides a major source of income to fish farmers ad fish traders

3. Fish watching
Man derive great pleasure from watching fish in private and public ponds, television screen and movies.
4. Scientific study
Fish are used for scientific experiments and researches t to increase knowledge
5. RecreationSport fishing as a recreation man has played important role in the social lives of people who are engage in it. In other words, it has contributed to their happiness.
6. Improvement of human health
Some species of tilapia and top minnows have been used to control malaria in the tropies since they prey in mosquitoes.
7, By-products


Some by-products offish are useful to man. Examples include:
(a) Fish meal: This is obtained by grinding dried parts of fish. It is in animal protein source, especially in poultry feeds.
(b) Fish oil: Oil can be extracted from fish and used by man. There are two kinds of fish oil. The one that is Extracted from the fishes themselves which is used in making paints, enamels, vanishes, candles, and soap; and the one which is extracted from fish liver, usually from the cod fish (stock fish) known as cod liver oil. This contains a lot of vitamins and is used as medicine, especially for babies.
(c) Fish manure: The discarded parts of fish as well as those fishes that have gone bad are heaped to decompose and are used as manure for growing crops.
(d) Fish skins: The skins from fishes especially sharks, are used as leather for bags, shoes and other leather works.






Fishing, Processing and Preservation of Fish
1. Methods of Fishing
There are different methods used to catch fish from the water. These methods include:

(a) 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. When a fish attempts to eat the bait, ils mouth is hu to the hook and the fisher quickly throws oul the honk the water to remove the fish. The method is time and labour consuming. Only one fish can be caught with this method it a time.

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You can read some of most interesting topics below

HERE YOU WILL FIND EVERY AVAILABLE TOPICS ABOUT AGRICULTURAL SCIENCE AND BIOLOGY. AND THE LINKS TO THEIR VARIOUS SOURCES.
1. DEVELOPMENT OF AGRICULTURE
2. IMPORTANCE OF AGRICULTURE
3. SUBSISTENCE AGRICULTURE
4. COMMERCIAL AGRICULTURE
5. PROBLEM OF AGRICULTURAL DEVELOPMENT
6. SOLUTIONS TO POOR AGRICULTURAL DEVELOPMENT
7. AGRICULTURAL LAWS AND REFORMS
8. ROLES OF GOVERNMENT IN AGRICULTURAL DEVELOPMENT
9. AGRICULTURAL POLICIES
10. PROGRAM PLANNING IN AGRICULTURE
34.
FORESTRY
35. WILDLIFE CONSERVATION
36. FACTORS AFFECTING LAND AVAILABILITY
37. TOPOGRAPHY
38. SOIL
39. BIOLOGICAL FACTORS
40. SOCIAL-ECONOMIC FACTORS
41. ENVIRONMENTAL FACTORS AFFECTING AGRICULTURAL PRODUCTION
42. CLIMATIC FACTORS AFFECTING AGRICULTURAL PRODUCTION
43. TEMPERATURE
44. RAINFALL
45. WIND
46. SUNLIGHT
47. SOLAR RADIATION
48. BIOTIC FACTOR AND AGRICULTURAL PRODUCTION
49. PESTS
50. BIRDS
51. DISEASES
52. SOIL MICRO-ORGANISMS
53. SOIL PH
54. ROCK FORMATION
55. IGNEOUS ROCK
56. SEDIMENTARY ROCKS
57. METAMORPHIC
58. SOIL AND ITS FORMATION
59. FACTORS OF SOIL FORMATION
60. LIVING ORGANISM
61. PARENT MATERIALS
62. SOIL FORMATION TOPOGRAPHY
63. PROCESS OF SOIL FORMATION
64. WEATHERING
65. PHYSICAL WEATHERING
66. CHEMICAL WEATHERING
67. PRESSURE
68. WATER
73. BIOLOGICAL WEATHERING
74. CHEMICAL AND BIOLOGICAL COMPOSITION OF THE SOIL
75. SOIL WATER
76. MICRO AND MACRO NUTRIENTS
77. SOIL MICRO ORGANISM
78. PROPERTIES OF SOIL
79. SOIL STRUCTURE
80. SANDY SOIL
81. CLAY SOIL
82. LOAMY SOIL

83. SOIL TEXTURE
84. IDENTIFICATION OF SOIL TYPES THROUGH EXPERIMENTS
85. RETENTION OF WATER BY VARIOUS SOIL TYPES
86. DETERMINATION OF SOIL PH REACTION
87. COLORIMETRIC DETERMINATION OF SOIL PH LEVEL
88. PH SOIL TEST
89. PLANT NUTRIENTS
90.
MACRO NUTRIENTS IN GENERAL
112.
THE MAINTENANCE OF SOIL FERTILITY
113. CROP ROTATION
114. APPLICATION OF ORGANIC MANURES
115. FARM YARD MANURE
116. APPLICATION OF INORGANIC MANURE

117. LIMING
118. FARMING PRACTICES
119. BUSH BURNING
120. CLEARING

121. FERTILIZER APPLICATION
122. ORGANIC MANURING
123. FARM YARD MANURE

124. HUMUS





125. COMPOST
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

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