1. THAILAND CASE STUDIES ON OTTERBOARD TRAWLERS AND ANCHOVY PURSEINERS
Ruangrai Tokrisna
Department of Agricultural and Resource Economics
Kasetsart University, Bangkok, Thailand
ECOST Can Tho Meeting 25 – 28 September 2007

2. Share of total catches, 2004

3. Share of marine capture form the Gulf of Thailand Total catches from GOT = 1.806 million tons

4. Share of important pelagic catches from the Gulf of Thailand Total pelagic catches from GOT = million tons

5. Fishing fleets in the Gulf of Thailand (% of total catches from the Gulf of Thailand, million tons)

6. Fishing gears in trawl fleet (% of total catches from trawl fleet in the Gulf of Thailand, million tons )

7. Fishing gears in purse seine fleet (% of total catches from purse seine fleet in the Gulf of Thailand, = million tons )

8. Case studies FLEET GEAR SPECIES ECOLOGY ECONOMICS SOCIOLOGY Trawler
Otter board trawl
•Trash fish
•Otter board trawl
•Change in social structure
(Pair trawl)
•Demersal
being 25%
catches = 45%
Large trawlers earned
(Beam trawl)
of GOT catches
high income from past
•Catches of juveniles
•Trawler fleet = 30%
fishing and had alternatives
as trash fish
of total fishing
other than fishing.
vessels
Small trawlers suffered from
resource degradation.
= 20% of total
Purseiner
Anchovy purseine
•Anchovy
• 7% of GOT catches
• Impact on small scale
(Purseine)
•Pelagic
or 19% of total pelagic
purseine = 9% of
coastal fisheries.
[Anchovy falling
GOT catches
total fishing vessels
net]
•Using fine mesh size
while total purseiner
[Anchovy lift net]
thus catching juveniles
is 10%.
•Fish for export,
conflict in fishery
resource utilization.

9. Seasonality (metric tons)

10. Volumes and values during last decade

11. Number of registered fishing vessels

12. Number of selected registered fishing vessel in Chumporn

13. Fish meal from trash fish
Number of Plants
(plants) 95
Raw materials
trash fish
(mill.tons)
0.772
remained
0.672
others
0.113
Production
0.424
Value
(mill. ฿)
8,609
Price of fish meal
(฿/kg)
22.04
Conversion ratio
(thou.tons)
Price of trash fish
3.77
Operating cost
Export volume
0.011
Export value
222
Import volume
0.010
Import value
247

14. Utilization of anchovies

15. Processed anchovies Item Unit Dried Boiled-dried Mixed Conversion
fresh/processed
3:1
4:1
Raw material
฿/kg processed 21 28 30
Processing 7 9 78
Price 40
120
Profit 2 3 12
Value added 90

16. THANK YOU