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Methods of prawn fishing

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Methods of prawn fishing

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Methods of prawn fishing

  1. 1. METHODS OF PRAWN FISHING Balwant Singh M.Sc. (AAS) Anamika Verma M.Sc. (AAS) By
  2. 2. INTRODUCTION Several species of prawns are caught from the Indian shore. These are Palaemon spp., Peneus indicus, p.monodon,P.carinatus, Metapeneus monoceros ,M. dobsoni ,M.brevicornis ,M.affinis, Parapeneopsis harwickii, Macrobrachium malcomsonii,M.mirabilis,M.carcinus, M.javanicum etc.various kinds of crafts and gear are for capturing prawn .
  3. 3. Classification of fresh water prawn Macrobrachium rosenbergii Kingdom : Animalia Phylum : Arthropoda Subphylum : Crustacea Class : Malacostraca Order : Decapoda Sub-order : Pleocyemata Superfamily : Palaemonoidea Family : Palaemonidae Subfamily : Palaemoninae Genus : Macrobrachium Species : rosenbergii
  4. 4. IDEAL SEASION FOR FISHING • The methods employed for fishing prawns are some what similar to that of the fishes. Prawn fishery is seasonal. The ideal season for fishing at Bombay coast is from August to October and in Saurashtra it is from July to September. • On the eastern coast, it starts from monsoon and extends up to March-April. Fishing is done throughout the year in the backwaters of Kerala. Different lakes have different fishing seasons. In fresh water, it extends from March to June-July.
  5. 5. METHODS OF PRAWN FISHING There are two extreme methods of managing of fresh water prawn pond. • 1. Batch culture technique . • 2. Continuous culture technique. • 3. Curl harvesting . • 4. Drain harvesting . BATCH CULTURE TECHNIQUE It is to stop the pond allow the animals to grow un till the average market size is achived or the pond has to be drained for other reasons and them harvest the old crop.
  6. 6. Continuous culture technique Stoking the ponds usually once a years at much higher density than with batch culture.  In this technique the ponds are never drained and market sized animals are removed by seining. CURL HARVESTING In this technique a seine net is pulled through thye pond to remove harvest seine animals from a continuous operated pond .Care must be taken to ensure that the bottom of the seine is kept on bottom or many prawn will escape beneth it The seine dose not get overloaded when whole pond is been seine is to drop two seine across the middle of the pond . CONT………….
  7. 7. One seine is drawn to one end and harvested. The second one is pulled to the oposite end of the pond . Pond which are to wide to harvested by pulling each end of seine down the long sides of the ponds can also be seine but less efficiently so . The seine it operation has to be repeated and several time keeping one end stationary and pulling the other end in the semi-circular function .seined prawn should be quickly transffered to a holding tank or net from which they can the sorted .
  8. 8. DRAIN HARVESTING • If the pond has a monk or sluice skate structure for drainage . • It is possible to included a harvesting stump some in front of the there the gate or even content with in it.
  9. 9. Several types of nets, traps and hooks are used for catching prawns. These are cast net, boat net , shore seine , scoop net, drift net , trawl net etc. Various types of traps with baits are used to catch prawns . The nets are made up of cotton ,nylon ,and are further strengthened by using coir ropes. The simplest of the nets is the cast net operated by one man only. Bag like nets operated from a moving are called drag net or trawl net. CONT…….. TYPES OF NETS
  10. 10. Gill nets are large sized nets that remain hanging in water, and the prawns get entangled by operculum or spiny surface of body and appendages. Gill net that are allowed to drift are called drift nets. Small nets and several other devices like trapping of prawns by clothes by making small fences are being used in paddy fields which are also used for this purpose. The crafts used for prawn fishing are the same as that used for the collection of fishes.
  11. 11. HOOKS AND LINE Hook’s & Line’s
  12. 12. Cast Net
  13. 13. Drag net  Drag net are used in a large skills in fishing.  Quality of Prawn Drag Net  UV Treated Polyethylene Green Netting - 30mm Mesh Size 7mm Polyethylene orange/Black trap rope top and bottom Y3 floats Well weights lead line with Split Net Leads. Long pocket with lead snapper weight at end of pocket Legal Size - 6m Wide.  Top of the range net for maximum cat. Drag net are categorized in two types -: 1) Gill Net 2) Drift Net
  14. 14. Different types of Gill Net 1) Floating Gill Net 2) Bottom Gill Net
  15. 15. DRIFT NET • Large floating nets • Unbreakable and invisible to most sea species • likely to rectangle large pelagic species : dolphins, whales, sharks, turtles, and rays. • Drift nets have earned the nick name “walls of death”. • These nets which are not anchored.

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