Appendix 1. Particulars of gill nets operated in inland open-water
Appendix 2. Particulars of seine nets operated in inland open-water
Appendix 3. Particulars of drag net and bag net operated in inland open-water
Appendix 4. Particulars of lift net operated in inland open-water
Appendix 5. Particulars of clasp net, cast net and push net operated in inland open-water
Appendix 6. Particulars of hook and line used for fishing
Appendix 7. Particulars of traps used for fishing
Appendix 8. Particulars of spear/harpoon used for fishing
Appendix 9. Particulars of specialized fishing method
Appendix 10 Training for Fishermen and Boat Builders on Fishing Gears and Crafts
Appendix 11. Improvement of hilsa (hilsa ilisha) fishing gears and crafts of the Meghna river.
|
Gill Net |
Description (M) |
Mesh size (mm) |
Location of operation |
Fishing season |
Species caught |
Remarks | |
|
|
Length |
Breadth |
|
|
|
|
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
|
1. Chandi Jal |
300-800 |
6-12 |
90-115 |
Big rivers |
March-Oct. |
Mainly HiIsa ilisha |
|
|
2. Current Jal |
300-580 |
4-11 |
55-85 |
Big rivers |
All seasons |
Mainly H. ilisha |
|
|
|
85-150 |
2-4 |
25-50 |
Small rivers & beels |
All seasons |
All types of fishes |
|
|
3. Poa Jal |
200-350 |
2-3 |
35-50 |
Big rivers |
Oct.-April |
Mainly Pama pama |
|
|
4. Dora Jal |
300-400 |
4.5-6 |
75-90 |
Big rivers |
Janu.-Oct. |
Mainly H. ilisha |
|
|
5. Dhara Jal |
100-500 |
5-9 |
50-75 |
Big rivers |
May-Oct. |
Mainly H. ilisha |
|
|
6. Daba Jal 1/ |
- |
- |
- |
Big rivers |
May-Oct. |
Mainly H. ilisha |
|
|
7. Gara Jal 1/ |
- |
- |
- |
Rivers |
Nov.-Feb. |
H, ilisha only |
|
|
8. Koi Jal |
20-35 |
1-1.5 |
12.5-40 |
Beels and baors |
June-Oct. |
Mainly Anabas testudineus with Puntius sp. and livefishes. |
* |
|
9. Puti Jal |
20-25 |
0.68-1 |
20-40 |
Beels, baor, & khals |
May-Dec. |
Mainly Puntius spp, with others small fishes. |
|
|
10 Bacha Jal |
100-120 |
5 |
50-63 |
Rivers |
April-Nov. |
Mainly Eutropiichtys vacha. |
|
|
11. Paia Jal |
60 |
4.5 |
50 |
Rivers & beels |
June-Dec. |
Major carps & catfishes. |
|
|
12. Lau Jal |
17-25 |
4-5 |
50 |
Rivers |
March-Dec. |
Mainly H. ilisha with major carps |
|
|
13. Pine/Pice Jal |
68-80 |
1-1.5 |
30-40 |
Mainly in beel |
Oct.-Dec. |
Livefishes, Puntius spp and other fishes |
|
|
14. Chapila Jal |
100-500 |
3-4 |
23-40 |
Kaptai lake & other rivers |
Sept.-May |
Mainly chapila |
|
|
15. Hal Jal |
110-150 |
5-7 |
135-170 |
Kaptai lake |
Sept.-May |
Mainly major carps and N. Chitala |
|
|
16. Kajuri Jal/ Kajolee Jal |
80-100 |
6-7 |
20-50 |
Kaptai lake & rivers |
Sept.-May |
Mainly Ailia coila |
|
|
17. Katla Jal |
300-400 |
7-8 |
250-300 |
Kaptai lake |
Sept.-May |
Mainly Catla catla with L, rohita & N. chitala |
|
|
18. Patpati Jal |
300-500 |
3-4 |
80-100 |
Kaptai lake |
Sept.-May |
Mainly Tilapia sp, with major carp 4 catfishes |
|
|
no. 3 |
400-500 |
4-5 |
120-140 |
Kaptai lake |
Sept.-May |
Mainly major carps |
|
|
no. 6 |
450-550 |
6-7 |
140-180 |
Kaptai lake |
Sept.-May |
Mainly major carps with y, attu 4 S. Chitala |
|
|
no. 9 |
500-650 |
8-9 |
220-240 |
Kaptai lake |
Sept.-May |
Mainly major carps with N. Chitala & W. Attu |
|
|
19. Vasha Jal |
200-400 |
2-3 |
80-110 |
Kaptai lake |
Sept.-May |
Mainly Tilapia |
|
|
20. Phoot Jal |
- |
- |
25 |
Beels, khals |
Aug.-Feb. |
Carpio, major carps and W, attu. |
|
|
21. Lengta Jal 2/ |
- |
- |
70-90 |
Meghna river |
Janu.-Nov. |
Mainly S, ilisha |
|
|
22. Raquni Jal 2/ |
700-800 |
10 |
100 |
Big rivers |
|
Mainly S. Ilisha |
|
|
23. Bhanan Jal 3/ |
500-667 |
10-16 |
150-200 |
Meghna river |
Oct.-Nov. |
Major carps (medium size) |
|
|
24. Galfa Jal 3/ |
Shore to |
shore |
125 |
Meghna river |
Oct.-May |
Major carps (all sizes) |
|
|
25. Pait Jal 3/ |
500 |
8 |
175-275 |
Meghna river |
Nov.-April |
Major carps (adult) |
|
|
26. Par Jal 3/ |
Shore to |
shore |
25-75 |
Meghna river |
All seasons |
Major carps (all sizes) |
|
|
27. Shada Jal 3/ |
100-200 |
4-5 |
100-150 |
Meghna river |
July-Sept. |
Major carps (medium size) |
|
|
28. Nangga Jal 3/ |
167 |
5 |
50-100 |
Meghna river |
March-April |
Major carps (medium size) |
|
|
Source: |
1\ = Moula et al. (1993) |
|
|
2\ BCAS (1989) |
|
|
3\ Tsai and Ali (1985) |
|
Seine Net |
Description (M) |
Mesh size (mm) |
Location of operation |
Fishing season |
Species caught |
Remarks | ||
|
|
Length |
Breadth |
|
|
|
|
| |
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
|
1. |
Ber Jal |
100-450 |
5-10 |
2-100 |
All types of water body |
All Season Nov.-June (in Meghna) |
All types of small fishes, but jatka with other fishes in Meghna river |
|
|
2. |
Jagat Ber Jal |
150-700 |
18-27 |
6-75 |
River and beel |
April-Oct. Janu.-May (in Meghna) |
All types of fish, Jatka mainly in Meghna river, 1 |
this net is big (400-700) in Meghna river |
|
3. |
Gulti Jal |
300-1000 |
12-20 |
75-125 |
Big rivers |
March-Oct, |
Mainly H. Ilisha |
|
|
4. |
Kona Jal |
100-300 |
10-15 |
75-130 |
Big rivers |
April-Oct. |
Mainly H. Ilisha |
|
|
5. |
Chewa Jal |
100-150 |
3-6 |
12-13 |
Rivers |
Dec.-May |
Mainly Pseudapocryptes lanceolatus |
|
|
6. |
Masharee Ber /Katha Jal |
200-250 |
4-5 |
3 |
Rivers, beels ponds & khals |
Dec.-April |
All types of small fishes, but mainly chewa in Meghna river |
|
|
7. |
Dool-Chot Jal |
140-150 |
10-15 |
18-25 |
River & beel |
April-Dec, |
Shrimp, catfishes major carps |
|
|
8. |
Deol/Lathi/ Kati Jal |
4-7 |
1.5-2 |
13-18 |
Beel, canal, river |
May-Dec, |
All types of small fish |
|
|
9. |
Kona-Ber Jal |
100-140 |
10-12 |
3-4 |
Beels, river |
Oct.-Dec, |
All types of small fish |
|
|
10. |
Vim Jal |
30-35 |
16-20 |
6 |
River |
May-June Sept.-Oct. |
Mainly shrimp |
|
|
11. |
Kochal/Dak Jal |
70-150 |
12-20 |
13-25 |
River, baor and Kaptai lake |
Sept.-May in Kaptai lake Feb.-April in baor |
Mainly Gudusia chapra along with E. vacha, major carps etc. |
|
|
12. |
Tengra Jal |
100-500 |
22-25 |
70-120 |
Kaptai lake |
Sept.-May |
Mainly catfish and major carps |
|
|
13. |
Kechki Jal |
105-320 |
5-12 |
2.5-4.5 |
Kaptai lake |
Sept.-May |
Mainly Corica soborna with other fishes |
|
|
|
|
|
|
|
|
|
|
|
|
15. |
Tona Jal 2/ |
120-150 |
8 |
12.5 |
Beel |
- |
Varieties of small fishes |
|
|
16. |
Ghurnee Ber Jal 2/ |
- |
- |
- |
Padua river |
- |
Varieties of snail fishes |
|
|
17. |
Gujuree 2/ Jal |
- |
- |
- |
Baor |
- |
Varieties of snail fishes |
|
|
18. |
Shanda Jal 2/ |
- |
- |
- |
Beel |
- |
All types of fish |
|
|
19. |
Apsha Jal 2/ |
- |
- |
25-28 |
Meghna river |
June-Nov. |
Mainly H. ilisha with other fishes |
|
|
20. |
Leski Jal 4/ |
60 |
9 |
|
River 4 beel |
Sept.-June |
Varieties of fishes |
|
|
21. |
Pawla Jal 4/ |
35-45 |
13-17 |
40 |
River |
Oct.-May |
Relatively large fishes, |
|
|
Source: |
2/ = BCAS (1989) |
|
|
4/ = CIDA (1993) |
|
Drag/Bag Net |
Description (M) |
Mesh size (mm) |
Location of operation |
Fishing season |
Species caught |
Remarks | |
|
|
Length |
Breadth |
|
|
|
|
|
|
A. Drag Net |
|
|
|
|
|
|
|
|
1. Moi Jai |
3.5-4.5 |
2-2.5 |
8-10 |
River |
Nov.-May |
Mainly shrimp along with other fishes |
|
|
2. Goria Jal |
3-4 |
2-3 |
6-13 |
River |
All season |
Mainly shrimp along with other fishes |
|
|
3. Horhori Jal |
5 |
1.2 |
6 |
River and beel |
Oct.-April |
Varieties of bottom living fishes |
|
|
4. Ban Jal 2/ |
|
|
|
Big rivers (Meghna, Jamuna & Padma) |
During dry & monsoon |
Mainly shrimp with other bottom living fishes |
|
|
B. Bag Net |
|
|
|
|
|
|
|
|
1. Behundi Jal |
20-50 |
24-40 |
12 |
River |
Nov.-May in Meghna May-Sept, in rivers of Sylhet |
Mainly shrimp 4 small fishes in Meghna and mainly H. ilisha with major carp in Sylhet rivers |
|
|
2. Savar Jal |
- |
- |
3-5 |
River |
May-July |
Major carp spawn 4 fry |
|
|
3. Shruti Jal |
- |
- |
40-70 |
Beel |
Oct.-May |
All types of fish |
|
|
4. Thaki Jal 4/ |
24-30 |
7 |
- |
River |
- |
Mainly shrimp with other bottom living fishes |
|
|
Source: |
2/ = BCAS (1989) |
|
|
4/ = CIDA (1993) |
|
Lift Net |
Description (M) |
Mesh size (mm) |
Location of operation |
Fishing season |
Species caught |
Remarks | |
|
|
Length |
Breadth |
|
|
|
|
|
|
1. Khara Jal |
15-20 |
13-15 |
6-13 |
River, canal, khals, beel |
May-Nov, |
All types of fishes |
|
|
2. Mola Jal |
1.5-5 |
3 |
12-15 |
Kaptai lake |
May-Dec. |
Mainly Amblypha ryngodon mola with G. Chapra |
|
|
3. Jhap Jal |
50-70 |
50-70 |
120-200 at outer margin 100-150 at middle 40-50 at centre |
Kaptai lake and river |
Sept.-May |
Mainly catfish and major carps |
|
|
4. Jak/Jam Jal |
40-50 |
12-15 |
100-150 50 25 |
Kaptai lake and river |
Sept.-May |
Major carps |
|
|
5. Dharma Jal |
2.5-3.5 |
2.3-3 |
10-18 |
River, canal, khal, beel etc |
June-Oct, |
Variety of fishes |
|
|
6. Bandhuri Jal |
16-20 |
10-15 |
13-25 |
River |
April-Oct, |
Mainly catfish & major carps |
|
|
7. Nauka-Vashal |
13-15 |
10-12 |
15 |
River and beel |
June-Oct, |
E. vacha, Clupisoma gaura, Silondia silondia etc. |
|
|
8. Dara Jal 4/ |
- |
- |
- |
River |
- |
Small fishes |
|
|
Source: |
4/ = CIDA (1993) |
|
|
Description(M) |
Mesh size (mm) |
Location of operation |
Fishing season |
Species caught |
Remarks | |
|
Types of net |
Length |
Breadth |
|
|
|
|
|
|
A. Clasp Net |
|
|
|
|
|
|
|
|
1. Shangla Jal |
9 |
3.5 |
90-100 |
River |
June-Oct, |
Mainly H. ilisha |
|
|
2. Bhuri Jal |
- |
- |
15-45 |
Beel |
Sept.-May |
Mainly Major carps and W. attu |
|
|
B. Cast Net |
|
|
|
|
|
|
|
|
1. Jhaki Jal |
- |
- |
10-25 |
All types of water |
All seasons |
All types of fish |
|
|
2. Utter Jal |
|
|
40-50 |
Rivers & heel |
May-Feb, |
Mainly catfish, major carps and snake head |
|
|
C. Push Net |
|
|
|
|
|
|
|
|
1. Thela Jal |
1.4-2.5 |
1-1.5 |
3-12 |
Beel, canal, khal, river |
May-Feb, |
All types of small fish |
|
|
Hook and Line |
No, of hook per line of lift |
Baid used/ or not used |
Location of operation |
Fishing season |
Species caught |
Remarks |
|
1. Chara/Lar Borshi/Daun |
200-500 hook |
Bait used |
River, beel Kaptai lake |
Feb.-Oct. |
Mainly snake head live fishes catfishes etc. |
|
|
2. Jhumka Borshi |
3-5 line 3 hook/line |
Bait used |
Kaptai lake |
March-Nov. |
Mainly major carps |
|
|
3. Chip Borshi |
3-4 Chip 2 hook/chip |
Bait used |
River, beel khal, canal |
July-May |
Mainly major carps in Kaptai lake, only shrimp in Meghna and snake head and live fishes in beels |
|
|
4. Wheel Borshi |
7-8 wheel 2 hook/wheel |
Bait used |
Kaptai lake |
March-Oct. |
Major carps, catfish and snake head |
|
|
5. Jeol Borshi of Kopa Borshi |
100-150 hook |
Bait used |
Beel, river |
May-Oct. |
Mainly carnivorous fish |
|
|
6. Hazari Borshi |
500-1000 hook |
Bait not used, |
Kaptai lake |
Augu.-April |
Mainly tortoise |
|
|
Trap |
No. of trap/lift |
Bait used/ or not used |
Location of operation |
Fishing season |
Species caught |
Remarks |
|
1. Hogra |
1 |
Both |
Beel and river |
Sept.-April |
Snake head, catfish Puntius spp. |
|
|
2. Goar Jal 2/ |
1 |
- |
Canal |
June-Oct |
Varieties of small fishes |
|
|
3. Chak/Chabi 2/ Jal |
1 |
- |
Beel |
Sept.-Janu, |
Mainly major carps |
|
|
4. Polo |
1 |
- |
Beel |
Oct.-April |
Varieties of small fishes |
|
|
5. Chai Traps |
1-75 |
Both |
Beel, river |
May-Sept, |
Mostly shrimp, small fishes, snake head etc. |
P. pangasius and rita rita in Meghna river, |
|
Source: |
2/ = BCAS (1989) |
|
Spear/harpoon |
No. Of spear/lift |
Location of operation |
Fishing season |
Species caught |
Remarks |
|
1. Koach |
1 |
Beel, canal Baor |
Oct.-Feb. |
Snake head, W. attu, Mystus spp |
|
|
2. Joti |
1 |
Beel, canal Baor |
Oct.-Feb. |
Snake head, W. Attu, and major carps, |
|
|
3. Ek-kata |
1 |
Beel, canal Baor |
Oct.-June |
Varieties of small fishes |
|
|
4. Te-kata |
1 |
Beel, canal Baor |
Oct.-June |
Varieties of small fishes |
|
|
5. Achra/Akra |
1 |
Beel |
Oct.-April |
Mainly Mastacembelus spp, |
|
|
Fishing method |
Description |
Fishing season |
Species caught |
|
1. Katha/Komar/Jag Fishing |
Branches of trees and bushes are put as brush shelter into deeper regions of beels or rivers to attract fish. |
Oct.-Fee, |
All types of fish |
|
2. Donga Fishing 4/ |
Ponds are excavated in the outlet of khals of beels and brush shelter is provided to attract fish. |
Nov.-Janu, |
All types of fish |
|
3. Pagar/Kua 4/ |
Ditches are constructed in the seasonal beels and then brush shelter is put into it to attract fish, |
Dec.-Feb. |
All types of small fish |
|
4. Fixed Engine 2/ Fishing |
Net, known as gara jal is set across the river from shore to shore and kept fixed with bamboo poles, The net is provided with pockets from which fishes are caught, |
Winter months |
Mainly hilsa (H. Ilisha) |
|
5. Berer Saver 2/ Shon/Char Jal |
Split bamboo fencing is fixed on the shore of the tidal influenced river, During high tide fencing is submerged and the shrimp 4 fishes are trapped at low tide, |
Oct. To June |
Shrimp is the main species along with other small fishes, |
|
Source: |
2/ = BCAS (1989) |
|
|
4/ = CIDA (1993) |
The economic condition of fishermen can be improved to a considerable extent by increasing the fishing efficiency of gears and crafts used by them for fishing as well as by protecting the fish stocks from illegal fishing. The fishing gears and crafts used by them at present are not so efficient as compared to modern gears and crafts. There is ample scope to improve the fishing efficiency of the gears by adjusting optimum mesh-size, diameter of the twine, hanging co-efficient and by using improved tanning and colouring materials. Efficiency of the crafts can also be improved following appropriate design with well-seasoned timbers or woods and with proper tanning materials.
There are a good number of gears harmful to commercially important fish stocks, at least in particular season of the year. The fishermen killed about 3456 ton of jatka (2-5 months old juvenile hilsa) only in the Meghna river in the year 1990 by using illegal gears. Besides hilsa stock, other fish stocks e.g., major carp stocks are also greatly being affected by the use of these illegal nets. Banning of these illegal gears is urgently needed for the proper management and conservation of fish stocks in order to ensure sustained yield. Therefore, to improve the situation it is imperative to educate and motivate the fishermen through a series of training programmes for generating awareness about the detrimental effects of the use of illegal fishing gears vis-a-vis the benefits of efficient gear use.
The traditional boat builders should also be imparted training on the improved designing, tanning, seasoning and construction of crafts for improving the efficiency of crafts.
To begin with, a comprehensive programme to train the trainers (TOT) should be undertaken to impart theoretical and practical knowledge about the fishing technology, specially on the types of gears and their beneficial and harmful effects on fish stock, modern gears and crafts and their operations, net making, webbing, gear preservatives and colour use. These potential trainers (who will participate in the TOT as trainees) may be picked up from amongst the scientific officers of Fisheries Research Institute and extension workers of DOF and NOGs. To facilitate the training programme and to make it more effective, the package of training materials and the training manuals are needed to be developed well ahead the programme. This will be followed by a series of training programmes to be arranged at the different stations of Fisheries Research Institute. After this training, the trainees will act as trainers and will arrange training programme for the fishermen in batches both in FRI research stations and in other locations where it is feasible. Since, the fishermen are mostly uneducated the training programmes are to be supported by audio-visual aids after every lecture. Different types of poster, leaf let, pamphlet, flash card etc. as well as short cultural programmes based on folk tradition are to be developed as extension materials for the trainees.
Training programmes should also be arranged for the traditional boat builders on the improved designing and construction of crafts and on the seasoning and tanning of woods used for boat making. A tentative training programme has been outlined on fishing gears and crafts for the trainers and trainees.
A Tentative Training Programme on Fishing Gears and Crafts for Trainers and Trainees.
Topics to be Discussed
|
SI. No. |
Topic |
Type |
Duration |
|
1 |
Types of illegal gears and their effects on fish production |
Theory & practical |
1 day |
|
2 |
Modern gears and crafts and their operation |
Theory & practical |
2 days |
|
3 |
Net making - Webbing, rigging and attaching of floats and sinkers |
Theory & practical |
2 days |
|
4 |
Types of net material and effects of their diameter on fishing efficiency |
Theory & practical |
1 day |
|
5 |
Types of preservatives and colour and their effects on fishing efficiency |
Theory & practical |
1 day |
|
6 |
Types of fishing crafts and wood used for their construction |
Theory & |
1 day |
|
7 |
Seasoning and tanning of wood and their impacts on durability and fishing |
Theory & practical |
1 day |
|
8 |
Improved designing and construction of crafts. |
Theory & practical |
1 day |
RESEARCH PROJECT PROPOSAL
1. Institute Code No.
2. Name and Address of Research Institute/Centre:
Fisheries Research Institute, Riverine Station, Chandpur.
3. Title of the Project: Improvement of hilsa (Hilsa ilisha) fishing gears and crafts of the Meghna river.
4. Title of the Individual Studies and Experiments:
i) Studies on the different types of gear used for hilsa fishing in different locations.ii) Studies on the gear selectivity, catch per unit of efforts, catch composition and fishing season for each type of gear.
iii) Comparative studies on the fishing efficiency of traditional gear with that of the experimental gear.
iv) Studies on the types of crafts used for operating different types of fishing gears.
v) Comparative studies on the fishing efficiency of mechanized and non mechanized fishing crafts.
5. Name and Designation of the Principal Investigation:
Dr. G.C. Haldar, CSO, FRI, Riverine Station, Chandpur.
6. Name and Designation of Project Leader and Associates Together with Time Proposed & Work to be done:
|
Sl No. |
Name |
Designation |
Time (m/m) |
Work to be done |
|
1) |
Dr. G.C. Haldar |
CSO |
10 |
Project direction |
|
2) |
Mr. A.K. Yosuf Haroon |
SSO |
20 |
Overall supervision |
|
3) |
To be appointed |
SO |
60 |
Supervise & conduct experiment on fishing gear. |
|
4) |
To be appointed |
SO |
60 |
Supervise & conduct experiment on fishing craft. |
|
5) |
To be appointed |
SO |
60 |
Supervise & monitor catch data. |
|
6) |
To be appointed, |
Field Assistant (3) |
180 |
To assist in field works. |
|
7) |
To be appointed, |
Fishermen (2) |
120 |
Operating and mending gear. |
|
8) |
To be appointed, |
Master role labour (3) |
180 |
To assist in field works. |
7. Location of Research Project with Complete Address:
Fisheries Research Institute, Riverine Station, Chandpur.
8.1 Objectives of the Studies:
a) To determine the types of gear used for catching hilsa and their fishing efficiency and gear selectivity.b) To determine the hanging coefficient, floats and sinkers attaching intervals and their effect on fishing efficiency.
c) To determine the mesh size and size composition of catch, and catch per unit of effort for each types of gear.
d) To determine the efficiency of craft used for operating different types of fishing gear.
e) To determine the optimum mesh size, diameter of twine and hanging coefficient for the most commonly used fishing gears so as to improve their fishing efficiency.
f) To improve the fishing efficiency of commonly used craft through mechanization with appropriate low cost engine.
g) To recommend efficient fishing gears and restrict the use of destructive gears.
8.2 Output: The results of the above studies will help to develop the efficient gears and crafts and to bring uniformity in their use. Study will also help in eliminating the less efficient and destructive ones.
8.3 Practical Utility: The desirable and uniformed gears will help to optimize the exploitation of fish stock on a sustainable basis. Introduction of efficient gears and crafts will increase the catch of the fishermen and thereby improve their economic condition.
9. Review of the Work Done: Hilsa, (H. ilisha) is an estuarine or marine water fish which migrates from saline water to fresh water river against the current mainly for breeding purpose and also for feeding purpose. It is a commercially most important fish in Bangladesh. It contributes about 54.25% in river fish production, 14.31% in total inland open-water fish production and 48.93% in marine fish production. The Meghna river is the most important hilsa producing river which contributes about 68% to the total hilsa production from inland open-water. This fish is harvested by the fishermen using different types of gears and crafts from major rivers systems, estuaries, coastal and marine waters.
Investigation on the fishing gears and crafts was first carried out by Ahmad (1954) in this country. He recorded about 116 gears and categorized them into 9 categories viz., gill net, seine net, drag net, trawl net, purse or clasp net, fixed purse seine net, stake net, dip net and cast net. He also gave the description of 7 categories of fishing crafts. Doha (1964) also divided the fishing nets into 9 categories similar to Ahmad (1954). Later on Karim (1978) reported 3 principal types of traditional fishing boats e.g., dingi, chandi and balam boats used by the fishermen for catching fish in estuarine and marine waters. Anonymous (1985) gave description of two types of fishing boats, dinghi and chandi operated for fishing in estuaries and offshore waters. Tsai and Ali (1985) recorded 20 different types of fishing gear in the riverine carp fishery of Padma, Jamuna, Meghna and Brahmaputra. BCAS (1989) investigated the gears operated by the fishermen in 4 flowing river fisheries (Meghna fishery, Meghna-Nayabhangni fishery, Narisha-Padma fishery and Padma-Jamuna fishery) and divided the gears so far recorded into 10 categories. BCAS (1989) also gave the description of 7 fishing crafts similar to Ahmad (1954). Very recently Moula et al. (1993) investigated the fishing gears and crafts used for fishing in Meghna river and recorded 10 gears and 4 fishing crafts used by the fishermen to catch mainly H. ilisha. They have also recorded fishing season and number of fishermen for each type of fishing gear. FRI (1994) recorded similar types of fishing gears and crafts used by the fishermen to catch H. ilisha in Padma, Meghna and Meghna estuary. However, detailed studies on size, mesh size, gear selectivity and catch per unit of effort were not undertaken.
For the effective management and conservation of hilsa fishery it is important to know the gear selectivity, gear efficiency and mesh size of different gears used for hilsa fishing. All these information will also help to improve the efficiency of gears and to determine optimum mesh size for judicious exploitation of hilsa. Therefore, this project is drawn up to improve the hilsa fishing gears and crafts and to make them uniform so that the optimum exploitation and effective management of hilsa stock can be ensured.
10. Technical Programme with Activity Chart:
10 (A). Technical Programme:
The project will be based on hilsa fishing in the Meghna river. The project sites will be located in 3 regions of the Meghna river, of which one will be in Aklashpur region (Upper Meghna), one will be in between Chandpur and Hazimara regions and another will be in the Meghna estuary.
In the first year, studies will be conducted to collect data on types of gear, size of gears, types of twine and diameter used for webbing net, types of float and sinker used and their attaching intervals, hanging coefficient, mesh size and length and weight of fish caught for each type of gear in 3 regions.
Mode of operation, fishing days per week, catch per unit of effort (CPUE) and catch composition of each types of gear will be recorded. The catch per unit of effort will be expressed as kg of fish per 100 sq. meter of net area per day for seine net and gill net, and kg/day for other relatively smaller gears. Besides, time required per lift/or haul, number of lift/haul per day and catch per lift/haul will be recorded for each types of gear. Attempts will be made to record the type of craft used to operate each type of gear.
The craft size, types of wood used for construction, mode of operation (sailing, rowing and mechanization), number of fishermen per boat and total fishing days for each types of gear and craft will also be recorded. All these data will be collected once in every month from each region for a year. Collected data will be analyzed to determine the selectivity of gear and fishing efficiency.
Gear selectivity curve will be developed from the length-frequency data and L50% and selection reage (L25% to L75%) will be determined from the curve for each type of gear. L50% is the length at which 50% of the fish entering the gear are retained. Using L50% value and selection range, size selectivity of each type of gear will be evaluated. Then the damaging effect of each type of gear on hilsa stock will be assessed, and the fishing regulation on type and mesh size of gear and its fishing season will be ascertained for hilsa fishery to protect the stock from over fishing in order to obtain sustainable yield. On the basis of results 4-5 types of commonly used gear will be selected for the experiment considering their efficiency and size selectivity. Experimental gears having different mesh size, diameter of twine and hanging coefficient will be used side by side for each type of the selected gear to determine optimum mesh size, diameter of twine and hanging coefficient through comparison of catch between the selected gears and experimental gears. These experiments will be continued for 3 years, one year for each region.
Besides, experiments will be conducted on the efficiency of commonly used mechanized and non-mechanized fishing crafts to determine their fishing efficiency. The fishing efficiency of the crafts will be assessed on the basis of time required per lift/or haul, no. of lift/haul per day, catch per lift/haul, CPUE, no. of fishermen per boat and net income of per fishermen. These experiments will also be continued for 3 years similar to fishing gears.
The results thus obtained from the above experiments will serve as a basis for making necessary recommendations to improve the selected gears and crafts up to a modern standard for judicious exploitation of hilsa stock on a sustainable basis.
10(B). Workplan and Activity Chart.
|
Major Activity |
Duration (month) |
|
1. Collection of data on types of gear, gear size, mesh size, types of thread and diameter and fishing season. |
12 |
|
2. Collection of data on duration per lift/haul, no. of lift/haul per day and fishing days per week. |
12 |
|
3. Studies on hanging co-efficient, types of floats and sinkers and their attaching intervals. |
12 |
|
4. Collection of data on catch effort, catch composition, length and weight of fish. |
36 |
|
5. Collection of data on types of craft, craft size, mode of operation and no. of fishermen/craft. |
12 |
|
6. Comparative studies on the fishing efficiency between traditional gears and experimental gears. |
36 |
|
7. Comparative studies on the efficiency of mechanized and non-mechanized fishing boats. |
36 |
|
8. Data compilation and preparation of final report |
4 |
11. Date of Start: July, 1995
12. Likely date of completion: June, 2000
|
13. Estimated man months: |
690 m/m |
|
CSO |
10 m/m borne by FRI |
|
SSO |
20 m/m borne by FRI |
|
SO |
180 m/m to be appointed |
|
FA |
180 m/m to be appointed |
|
FM |
120 m/m to be appointed |
|
MRL |
180 m/m to be appointed |
14. Facilities Required:
Research vessel, speed boat, net and net materials, computer, measuring board, balance and stationeries.
15. If financed by an organization other than the institute, then give the detailed information in terms of fund, time and personnel:
A detailed information in terms of fund, time and personnel are enclosed:
16. Approximate Cost: Tk. 30,58,360/-
|
Salary of the scientific staff: |
Tk. 8,39,700/- |
|
Salary of supporting staff: |
Tk. 8,94,660/- |
|
Operational cost: |
Tk. 11,09,000/- |
|
Capital cost: |
Tk. 1,85,000/- |
|
Contingencies: |
Tk. 30,000/- |
17. Signature of Project leader and associates:
18. Signature of C.S.O.:
19. Signature of Additional Director:
20. Signature of Director:
REFERENCES
Ahmad, N. 1954. Fishing crafts of East Pakistan. Proc. Indo-Pacific Fish. Coun. IPFC/C54/Tech. 20, 1-9 pp.
Ahmad, N. 1954. Fishing gears of East Pakistan. Pak. J. Sci., 1(3): 195-203.
Anonymous, 1985. Marine small-scale fisheries of Bangladesh. A general description, Bay of Bengal Programme, Development of small-scale fisheries, BOBP/INF/8, 4-5 pp.
Bangladesh Centre for Advanced Studies (BCAS). Final report, ENIMOF Project, Department of Fish, and Ministry of Fish and Livestock, Govt. of Bangladesh, 3-8-3-10 pp.
Doha, S. 1965. Freshwater fisheries of Pakistan. Present status and measures for development -1. Production, craft-and gear. Pak. J. Sci., 17 (2 & 3): 105-110.
FRI, 1994. Hilsa fishery development and management. Progress report (1991-1993), Fisheries Research Institute, Riverine Station, Chandpur, 1-14 pp.
Karim, M. 1978. Status and Potential of Bangladesh Fisheries. Ministry of Fisheries and Livestock, 1-125 pp.
Moula, G., Y. Mahmud, M.G.M. Alam and M.A. Hossain. 1993. Fishing crafts and gears of the Meghna river. Progress. Agric., 4 (1&2): 59-66.
Tsai, Chu-fa and L. Ali. 1985. Open-water Fisheries (Carp) Management Programme in Bangladesh. Fish. Inf. Bull., FAO, 2 (4): 1-51.
Total Budget at a Glance
|
Line Item |
FY-1 |
FY-2 |
FY-3 |
FY-4 |
FY-5 |
Total | |
|
1. |
Salary & . |
3,46,872 |
3,46,872 |
3,46,872 |
3,46,872 |
3,46,872 |
17,34,360 |
|
|
Allowances |
|
|
|
|
|
|
|
2. |
Capital |
1,85,000 |
- |
- |
- |
- |
1,85,000 |
|
|
Expenses |
|
|
|
|
|
|
|
3. |
Research |
2,81,000 |
2,21,000 |
2,06,000 |
1,96,000 |
2,05,000 |
11,09,000 |
|
|
Operational |
|
|
|
|
|
|
|
|
Expenses |
|
|
|
|
|
|
|
4. |
Contingencies |
6,000 |
5,000 |
5,000 |
6,000 |
8,000 |
30,000 |
|
|
Total |
8,18,872 |
5,72,872 |
5,57,872 |
5,48,872 |
5,59,872 |
30,58,360 |
|
Table |
Detail of Salaries and Allowances. |
|
Name/Position |
Monthly rate |
Allowances |
Total |
Total for |
Total for |
|
|
|
|
|
the year |
5 year |
|
1. Principal Investigator |
Borne by FRI |
- |
- |
- |
- |
|
2. Senior Scientific Officer |
Borne by FRI |
- |
- |
- |
- |
|
3. Scientific Officer |
3,225 × 3 |
1440 × 3 |
13,995 |
1,67,940 |
8,39,700 |
|
4. Field Assistant |
1,745 × 3 |
935 × 3 |
8,040 |
96,480 |
4,82,400 |
|
5. Fishermen |
1,185 × 2 |
743 × 2 |
3,856 |
46,272 |
2,31,360 |
|
6. Master role |
1,005 × 3 |
- |
3.015 |
36,180 |
1,80,900 |
|
|
|
|
|
3.46.872 |
17.34.360 |
1. Includes house rents, medical allowance and festival allowances.
Detail Budget for Capital and Field Research Expenses (in Lakh Taka)
|
Line Item |
FY-1 |
FY-2 |
FY-3 |
FY-4 |
FY-5 |
Total |
|
A. Capital Expenses: |
|
|
|
|
|
|
|
1. Computer (1 unit) |
1.50 |
- |
- |
- |
- |
1.50 |
|
2. Balance (2+2 = 4 unit) (5 & 10 kg capacity) |
0.34 |
|
|
|
|
0.34 |
|
3. Measuring board (6 unit) |
0.01 |
- |
- |
- |
- |
0.01 |
|
Total |
1.85 |
|
|
|
|
1.85 |
|
B. Research Operational Expenses |
|
|
|
|
|
|
|
1. Office supply & services |
0.10 |
0.10 |
0.10 |
0.10 |
0.5 |
0.90 |
|
2. Travelling allowances |
0.50 |
0.20 |
0.20 |
0.35 |
0.3 |
1.55 |
|
3. Fuel & oil Net and net materials |
0.90 1.20 |
0.601.20 |
0.60 1.00 |
0.80 0.50 |
0.65 |
3.55 3.90 |
|
4. Repair and maintenance |
0.10 |
0.10 |
0.15 |
0.20 |
0.10 |
0.65 |
|
5. Printing & publication |
0.01 |
0.01 |
0.01 |
0.01 |
0.50 |
0.54 |
|
Total |
2.81 |
2.21 |
2.06 |
1.96 |
2.05 |
11.09 |
|
Grand Total |
4.66 |
2.21 |
2.06 |
1.96 |
2.05 |
12.94 |