Transcript Preliminary stock taking, what data are available and

Status of Deep Sea Fishery
survey in Myanmar
Aung Htay Oo
Senior Fishery Officer
Marine Fisheries Conservation Unit, DOF.
[email protected]
Introduction
• Union of Myanmar has long coastline of nearly 3000 km. total
land area is 67.67 million ha.
• The population of Myanmar is 56.52 million.
• Three coastal regions
 Rakhine coastal region, Naff River to Mawtin point about 740 km.
 Ayeyarwaddy Delta region, from Mawtin point to the gulf of
Mottama, about 460 km.
 Taninthayi coastal region, from Gulf of Mottama to the mouth of
the Packchan river, about 1200 km.
 Coastline formed several large estuarine, delta system and
numerous offshore islands.
• Coastal zone is very diverse array of ecosystem, such as coral
reef, sea grass bed, mud and sand flats, mangroves, bays,
estuaries etc,.
• There are two major islands grouping the moscos islands in the
north and the Mergui (Myeik) archipelago in Taninthayi consists
of over 800 islands
Department of Fisheries
Fishing Grounds of Myanmar
A1
20
30’
30’
94
30’
95
SITTWAY
SI TTW
AY
A2
A3
A4
A7
A8
A11
A12
A13
A16
A17
A18
A19
A20
B1
B2
B3
B4
B5
A5
A6
30’
96
30’
97
30’
98
99
O
ENT F FI
M
20
ERIES
SH
Contin:
93
30’
DEPART
92
30’
30’
•
•
Union of Myanmar, with an area of
19
676,577 sq kilometer
A long coastline nearly 3000 kilo meter
18
from border with Bangladesh to
Northern-most Taninthayi division.
Rich in aquatic resources
17
Total swamp area is 0.5 million hectares
serving as spawning, nursery and feeding
16
grounds for near shore aquatic and
brackish water fauna
Continental shelf covers 228,751 sq
15
kilometers
The territorial fishing zone is within 12
14
nautical miles from baseline
The EEZ covers 200 nautical off shore
from baseline
13
Myanmar fisheries water including EEZ is
486,000 sq kilometer
A9
A10
19
THANDW
E
A14
A15
HANDW
THANDWE
E
30’
18
GWA
GW
A
30’
•
•
•
•
•
•
30’
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
C1
C2
30’
17
YANGON
30’
30’
B20
D1
D2
D3
D4
D5
D6
D7
C10
D9
D10
D11
D12
D13
C15
D14
D15
D16
D17
D18
C20
D19
D20
D21
D22
D23
D27
D28
16
C3
C4
C5
D8
BAS
EL
I NE
30’
C6
C7
C8
C9
C11
C12
C13
C14
C16
C17
C18
C19
C23
C24
30’
YE
TER
RI TO
RIA
L SE
A
15
YE
30’
30’
C21
C22
C25
D24
D25
D26
DAW
DAWEI
EI
14
D 29
30’
E1
E2
E3
E4
E8
E9
E10
E5
E6
E11
E12
30’
13
E7
30’
MYEI K
MYEIK
E13
E14
E15
E16
E17
E18
E21
E22
E23
E24
E25
F4
F5
F6
F7
F14
F21
30’
12
12
E20
30’
30’
F
1
F2
F3
11
11
F
8
30’
F
15
F9
F10
F11
F12
F13
F16
F17
F18
F19
F20
30’
10
KAWTHOUNG
92
30’
93
30’
94
30’
95
30’
96
30’
97
30’
98
30’
99
10
Rakhine state
• Situated in the westernmost part of the nation
• Boarding with Chin state in North and Magway
division. Bago and Ayeyarwaddy division in the
east and facing Bay of Bangal in the west.
• The area of Rakhine state is 22852.68 sq km.
• Located in tropical monsoon region, temperature
never rise or fall extremely.
• Average temperature in Sittwe in May the hottest
month of the year is 84º F (29º C), in January the
coldest month of the years is 70ºF (21ºC)
• Rakhine gets a lot of rain annually as the north-west
monsoon wind blows from the sea.
• Annual rain fall at Thandwe is 221 inches.
Rakhine state (contin:)
• Kyauk-Phyu gets 186 inches, Sittway get 203
inches.
• Torrential rainfall and tidal wave rise from sea when
cyclones that are formed in the Bay of Bengal, enter
Rakhine state, causing proper damages and flooded
sea water in the low land area.
• Though the storm appears mostly in early and late
period of rainy season. Sometime appear in the mid
rainy season.
Rakhine state (contin:)
• There are fishing industries in Sittway, Kyaukphyu,
Thandwe and Andrew bay.
• Most of the catch is transported to Yangon directly.
• State own pearl culture station is situated on
Apawye island near Thandwe.
• Sun dried fish and salt are produced along the coast,
produced sundried indian anchovy Stolephorus
indicus and spanish mackerel Scomberomorus
commerson as well.
Previous surveys
Analyzer
Year
Reference
Demersal
(ton)
Pelagic
(ton)
Total
Jone, S &
Baner Ji, S.K
1968
review of the living resources of
central Indian Ocean Proc. of Symp. In
200 mtr depth range.
775,000
800,000
1,575,000
Somura, R. S.
1969
Area review on living resources of the
world's ocean FAO fish Circ.
(109.10.Rev-1) in 200 meter depth line.
625,000
-
-
Prasad, R et al
1970
A quantitative assessment of potential
fishery resources of Indian ocean &
adjoining seas
326,000
400,000
726,000a
it seem to
be MSY
Gulland, J. A
1972
The fishery resources of the Indian
Ocean
625,000
-
-
Narr et al
1973
estimated based on the production of
carbon per square meter is 0.630 gm
Menon, M.D
1977
Plan proposal for PPFC for
development in the marine fisheries
sector
1,512,000
tonnes
783,000
729,000
1,512,000b
b= Menon and PPFC team analyzed the trawl catch data of PPFC for 1975-77 and c
alculated standing stock of demersal fish for Burmese shelf area.
UNDP/FAO Project BUR/77/003
• In 1979-80, the research vessel "Dr. Fridtjof
Nenson" conducted survey in Myanmar water.
• The objectives of the project, to which these
survey were expected to contribute
– To make an estimate of marine fish biomass with
the EEZ of Myanmar and in particular, over its
continental shelf.
• Survey methods
– Acoustic estimation of biomass of demersal
and pelagic fish.
– Estimation by Trawl fishing for identification and
sampling and for assessment of catch rates.
– Recording types of bottom samples,
hydrographical profiles form coast to 500 mtr
depths for temperature, salinity and oxygen.
• As a result, 1.0 million metric ton of pelagic
fish and 0.8 million metric tons of demersal fish
are exists as biomass in Myanmar.
Shrimp resource survey
• In 1982, Dr. John Tarbit conducted the shrimp
resources survey till 60 mtr depth range in Rakhine
area.
• Estimated that 4370 metric tones of shrimp in 5102 sq
miles water between 17º to 20º North latitude.
• In 1985, DOF conducted deep sea survey by 533
shrimp trawler, mean catch rate is 31.18 kg/hr
• Then, Thai-Myanmar joint survey was conducted as
well and mean catch is 31.6 kg/hr.
• Then, DOF of Myanmar and SEAFDEC conducted
two time partial deep sea survey in Myanmar in 2004
and 2007.
FRTV- Chulabhorn
In 1990, Joint Myanmar-Thai fishery explorato
ry Survey has been conducted in Myanmar w
ater
Research operation with FRTV- Chulabhorn
Fishery Biological survey, Acoustic survey and
Oceanographic survey were carried out.
The result of overall catch rate was 183.67 kg
/hr with about 79.94%of economically import
and 20.06%
trash fish.
A complete classification of 65 families ant
and fish,
226 species
were of
identified
from trawl catc
h.
The highest catch rate observed was 1,473 kg/hr which was obtained at the depth of 1
05.0 mtr at station No-2 in Delta area.
Myanmar-India oceanographic survey
• In 2002, the joint Myanmar-India oceanographic survey was
conducted in Bay of Bengal and Andaman sea.
• To study the marine plankton distribution, benthos, chemical and
mineral content of the sea water etc;
• This survey was supported by National Institute of Oceanography
• The survey team from Indian scientists and Myanmar scientists
lead by Dr. Swe Thwin who is professor of marine science from
University of Mawlamyein.
The activities of SEAFDEC 2 in Myanmar
water
•In 2004 and 2007, the oceanographic
survey and fishery survey was conduc
ted in Myanmar water.
• FRTV-SEAFDEC 2 from Southeast
Asia Fisheries Development Center
(SEAFDEC)
•Survey team scientists from departm
ent of Fisheries (Thailand) and Fisher
y scientists from Department of Fisheri
es Myanmar.
•Studied the catch composition, speci
es composition, length frequency and
oceanographic parameters.
Jointed Ecosystem based deep sea survey
in bay of Bengal
•In 2007, the ecosystem based deep
sea survey and fishery survey was co
nducted in Sri Lanka, India and Myan
mar water.
• using FRTV-SEAFDEC from Southe
ast Asia Fisheries Development Cent
er (SEAFDEC)
•Survey team scientists from India, Sri
Lanka, Nepal, Bangladesh, DOF of Th
ailand, SEAFDEC and Myanmar.
•The fishing gears used are gillnet,
long line, and automatic squid jigging.
•Studied the catch composition, speci
es composition, length frequency and
oceanographic parameters and many
sub-projects.
Demersal fishery resource survey in untrawlable fishing
ground at Rakhine in January 2009.
• The objectives
 To investigate the potential resources of some
economically important species.
 To introduce and carry out trial of appropriate/
responsible fishing gears and practice for harvesting
of fisheries resources on the untrawlable grounds.
• Material and method








Fishing gear: Bottom vertical long line
Bait : squids
Immersion time : 2 hr
No of St: 10 stations
Topography survey : portable echo sounder
Fishing boats: 2 local fishing boats (photos)
Researchers from SEAFDEC and DOF Myanmar.
10 local fishermen joined on board
Results and findings of Rakhine survey
Fish species caught
Scolopis monogramma
Lutjanus erythropterus
Nemipterus japonicus
Cephalopholis argus
Lethrinus sp.
Cephalopholis formosa
Fish species caught
Psudobalistes flavimarginatus
Seriolina nigrofaciata
Lagocephalus wheeleri
Moray eel
Arothron stellatus
Pomadasys hasta
Fish species caught
Arius sp
Observation of Fisheries activities of Rakhine area
Providing fishing gears to the local fishermen
Evaluation of Finding for the future survey
• Fishing time gap between local fishermen and survey
team.
• Selected hook size (may be reduced the catch)
• The capacity of the fishing vessels
• Need to collect more parameters
• Need to conduct more detail survey at Rakhine fishing
grounds collaboration with SEAFDEC using more
effective deep sea fishing vessels
Thank you all