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APPENDIX A (contd.)

Table 3.3

TANZANIA - L. VICTORIA WATERS, ANNUAL CATCHES (m.t.) BY SPECIES, 1975–1985*

SPECIES19751976197719781979198019811982198319841985
O. esculentus3592125615649621997187544221997916  
O. niloticus-10311645296816084210392933361887  
O. variabilis185012451944227938574476441851873901882110651
O. leucostictus---------  
T. zillii2071141721439520049212349  
Bagrus58275906457051145183414312180117001160188929215
Lates---24-152742040164254161437608
Protopterus61803100724340294603612970802948370539634050
Haplochromis1614825184361581881021760250362459324023216241512211572
Clarias25081980262228692558410829342719252853745560
Barbus232161153129364256216291849649402
Synodontis22953166315222704334866119382523297851849278
Mormyrus808810699408315163130197653353
Labeo16013611736230968493456163816069231135544
Schilbe10151373277112161638170426243113231744231577
Rastrineobola/Other spp.50582369251332892661289937202259318719618096
TOTAL4659350584653494651057915674837062163995730879781898906

* SOURCES: for 1975–1977: CIFA (1985); for 1978–1983: Ssentongo (1985); for 1984–1985: Bwathondi (1988).

Table 3.4

TANZANIA - L. VICTORIA WATERS, NUMBER OF FISHERMEN & VESSELS, CATCH & EFFORT LEVELS, 1970–1985. *

YEARFISHERMENVESSELSCATCH (t.)CPUE (t/boats)
19701209137854829212.76
19711413133024255212.87
19721469034944092611.71
19731591739764961512.48
19741338133324152612.46
19751503739184660211.89
19761473337944825012.72
19771432733986541519.25
19781765434484655313.50
19792093744575751712.90
19802058739976748316.88
19812078741997062116.82
19821826342456399615.08
19831519441417308717.65
19841782746509781821.04
19851755641609890623.78

* SOURCES: for 1970–1979: FAO/Norway 1984; for 1980–1983: Ssentongo (1985); 1984–1985: Bwathondi (1988).

Table 3.5

TANZANIA - L. VICTORIA WATERS, GEAR & EQUIPMENT ENUMERATIONS, MWANZA REGION, 1970–1986.*

YEARGILLNETSBEACH SEINESDAGAA SEINESHOOKSO/B ENGINESI/B ENGINESTRAWLERS
197059403200**  72596******
197163053  86  68    5253******
197260929170126105450******
19735929922410910177060****
197447408171147  8585663**(5)
19756580421111310383375  1(5)
197697155289  90120459****(5)
197789396362204  90922106    6(5)
19786778623422114930231  3(5)
197995477271469157072**  7(5)
1980125103    86583179178113    4(5)
1981139689  283322201457****(9)
198286827284262181668117    7  13
19835791228425217021935  1  15
19846910534423030378141  4  17
1985475373782072350894620  17
1986111843  6213361896716824  18

* SOURCE: Regional Fisheries Office, Mwanza
** Indicates no data available. Figures in brackets are estimates derived from other sources (Goudswaard 1987; Goudswaard & Ligtvoet 1987).,/A.

Table 3.6

TANZANIA - L. VICTORIA WATERS (MARA REGION), MEAN PRICES TO FISHERMEN BY SPECIES 1976–1986 (current Tshs/kg).*

SPECIES19761977197819791980198119821983198419851986
O. esculentus2.583.553.883.93**8.5010.209.10-   18.3024.50
O. niloticus3.014.524.035.93**14.4023.8020.5015.7021.2025.00
O. variabilis2.503.375.585.86**8.0016.9015.6015.7015.8018.90
T.zillii1.322.003.115.64**9.3025.0014.00-   10.2012.50
Bagrus1.782.233.092.99**8.709.4011.0016.6012.8013.50
Lates-   -   1.00-   **15.0013.4010.9012.209.8011.70
Protopterus1.601.701.812.65**5.407.909.2011.8010.5016.70
Haplochromis0.991.171.261.63**3.204.904.906.204.206.30
Clarias1.401.772.022.37**6.609.5010.5011.3011.5015.50
Barbus1.723.372.654.63**6.1030.7018.9810.5021.8024.30
Synodontis0.981.081.421.70**5.205.609.9010.709.903.20
Mormyrus1.001.252.382.95**1.406.606.4011.107.9016.50
Labeo2.402.492.743.46**7.008.4010.6017.8012.2015.70
Schilbe1.111.541.692.33**5.707.608.9012.1010.2014.10
TOTAL1.722.312.623.54**7.4612.8511.4612.6412.5915.60

* SOURCES: Annual Reports, Regional Fisheries Office, Mara
** No data available

Table 3.7

TANZANIA - L. VICTORIA WATERS (MWANZA REGION), MEAN PRICES TO FISHERMEN BY SPECIES 1983–1986 (current Tshs/kg).*

SPECIES1983198419851986
O. esculentus14.1011.4024.9029.30
O. niloticus16.4030.1022.8028.80
O. variabilis12.5021.8020.2022.40
T. zillii11.7017.4030.4027.50
Alestes10.30  5.10**  9.50
Bagrus12.1013.4018.3022.60
Lates  9.9013.3011.9015.30
Protopterus  7.00  8.8016.2022.50
Haplochromis  5.00  6.30  8.90  5.90
Clarias11.0014.2015.7018.10
Barbus12.20  9.1020.0031.40
Synodontis  8.60  9.6015.0011.80
Mormyrus  9.4011.2018.0012.40
Labeo10.2014.50  8.10  9.80
Schilbe11.9010.7014.5016.70
Rastrineobola/Other spp.  7.1015.0011.6011.50
TOTAL10.5913.2417.1018.47

* SOURCES: Annual Reports, Regional Fisheries Office, Mwanza
** Data Uncertain

Table 3.8

TANZANIA - L. VICTORIA WATERS (MWANZA REGION), EXPORTS OF FISH PRODUCTS, 1985.*

DESTINATION DAGAABAGRUSHAPLOCHROMISSYNODONTISPROTOPTERUSLATESTOTAL
wt.valuewt.valuewt.valuewt.valuewt.valuewt.valuewt.value
DAR371.57484.014.2  669.235.1  776.0.418.0--  --  62.73919.9483.92867.1
IRINGA170.72513.6--  --  --  --  --  --  --  --  .422.0171.02535.6
SONGEA/RUVUMA321.06420.0--  --  --  --  --  --  --  --  --  --  321.06420.0
TANGA52.41048.0.1  6.0--  --  --  --  --  --  --  --  52.51054.0
SHINYANGA11.4227.2.2  10.5.1  8.01.467.5--  --  4.2263.217.3576.4
KIGOMA235.84616.8.4  21.9.032.0--  --  --  --  3.7231.4240.04872.1
DODOMA47.4948.8.6  49.9.4  23.7--  --  --  --  10.9682.959.31705.3
MBEYA35.9717.6.5  24.016.5  228.07.5376.0--  --  1.9116.562.21462.1
MOROGORO181.42628.0.4  18.0.2  3.3.522.5--  --  10.5670.0193.03341.8
TABORA71.81435.2.6  27.0.4  17.8.631.5--  --  6.2357.979.61869.4
RUKWA/MPANDA.47.2.031.5.032.0.734.5--  --  7.3459.28.5504.4
MARA10.1202.4--  --  .6  9.9--  --  1.015.0.031.511.8228.8
BUKOBA145.42908.0.6  27.0--  --  .524.4--  --  2.9183.0149.43142.4
MTWARA/LINDI170.73812.6--  --  --  --  .14.5--  --  .315.0171.13832.1
ARUSHA43.8876.8--  --  --  --  --  --  --  --  9.1576.452.91453.2
TOTAL1869.635846.217.6   855.053.3  1070.71.6578.91.015.0120.27498.82073.445364.7

* SOURCE: Regional Fisheries Office, Mwanza.

NOTE: Weights are in metric tons; values are TShs'000. Figures may not sum exactly due to rounding.

Table 3.9

TANZANIA - L. VICTORIA WATERS (MARA REGION), VALUE OF CATCH BY FISH SPECIES (TSHS '000) 1976–1986.*

SPECIES19761977197819791980198119821983198419851986
O. esculentus9221223.7995.02098.5**7359.84209.9348.58.5241.112972.8
O. niloticus283413.31657.52381.9**3388.813405.52615.811998.433152.0111105.5
O. variabilis11631858.31453.75520.5**5991.838939.621401.225389.621015.25581.1
T. zillii2510.827.4201.4**100.1271.3105.012.3927.55.0
Bagrus25262256.75141.02154.9**5866.64264.43922.88921.610047.81879.0
Lates-   -   9.1-   **2623.034301.068572.420740.394501.1114525.4
Protopterus8121222.61127.22447.6**2379.23868.91517.52144.73053.14110.5
Haplochromis47756094.76112.65081.5**12354.610941.113001.36485.610444.61390.6
Clarias540695.51074.31765.9**2798.74971.32087.14323.04350.66796.3
Barbus92104.7172.7149.0**196.53286.7736.3118.3113.363.2
Synodontis466834.1705.1923.2**1484.31466.86065.015822.14290.91583.0
Mormyrus1738.739.7103.8**89.8269.5263.2376.1167.090.7
Labeo6261024.62247.03817.1**2580.82161.52117.23311.1193.423.5
Schilbe6871251.11193.41327.0**2313.84989.66348.912934.34206.23711.5
TOTAL1393417028.821955.727972.3**49527.8127347.1129102.2112585.9186703.8263838.1

* SOURCES: Annual Reports, Regional Fisheries Office, Mara.
** No data available.

Table 3.10

TANZANIA - L.VICTORIA WATERS, ILLUSTRATIVE ANNUAL COST AND EARNINGS FOR NON-MOTORISED NILE PERCH CANOE FISHING UNIT (Tsh. July 1987)

ITEMRATETSHS.TOTAL
EQUIPMENT & GEAR INVESTMENT:1   
CANOE
 35 000 
NETS (20)
Shs.2500. Ea. 50 000  85 000
GROSS REVENUE:2   
TOTAL ANNUAL CATCH
16,500 kg  
GROSS ANNUAL REVENUE
Shs.20/kg330 000 330 000
    
OPERATING COSTS:3   
TOTAL ANNUAL WEIGHT CREW FISH
825 kg  
@ TOTAL ANNUAL COST
Shs.20/kg-16 500 
    
TOTAL ANNUAL COST OTHER CREW FOOD
 -27 500 
   
ANNUAL CREW CATCH SHARE
25%-82 500 
    
MAINTENANCE REPLACEMENT (DEPRECIATION)
20% Investment-17 000 
NETS (1 year)
Shs.2 500 Ea.-50 000 
CANOE (4 years)
Shs.8750/year  -8 750-202 250  
    
MANAGEMENT OPPORTUNITY COST:4Shs.15600/year-15 600-15 600
    
NET REVENUE:5   
RETURN TO CAPITAL
  112 150
RATE OF RETURN ON INVESTMENT
132% 127 750
NET REVENUE TO OWNER
  127 750
    
TOTAL REVENUE TO A CREW MEMBER    31 625
(AS PERCENTAGE OF MINIMUM WAGE)
203%  

NOTES

1. Equipment and GearCanoe dimensions are about 8 m in length, 1.4 m beam. Nets are assumed to be 20 in number, of the “tyre” type.

2. Gross RevenueAssumes a catch rate of 3 kg/net/day for 275 fishing days/year. Beach price for Nile perch is taken as Shs. 20/kg.

3. Operating CostsCrew size is assumed to be 3 out of 4 persons working in rotation. The crew is expected to take part of the catch (3 kg/day) for autoconsumption and to receive other food rations (maize meal/rice) worth Shs. 100/day. The catch share for the crew is taken as 25%. The annual maintenance allowed is 20% of the investment. Depreciation is calculated on the basis of a replacement time of 1 year for nets and 4 years for canoes.

4. Management Opportunity CostThe owner's opportunity cost is reckoned at 2 times the minimum wage, assumed to be Shs. 1300/month. It is further assumed that the owner is working half time.

5. Net RevenueReturn to capital is gross revenue less all costs. Rate of return on investment is return to capital divided by capital investment. Net revenue to owner is the return to capital plus the opportunity cost of management. Total revenue to a crew member is crew share plus benefits divided by a total crew size of four.

Table 3.11

TANZANIA - L.VICTORIA WATERS, ILLUSTRATIVE ANNUAL COST AND EARNINGS FOR MOTORISED NILE PERCH CANOE FISHING UNIT (Tsh. July 1987)

ITEMRATETSHS.TOTAL
EQUIPMENT & GEAR INVESTMENT:1   
CANOE
   70 000 
ENGINE
 175 000 
NETS (50)
Shs.2500. Ea.125 000370 000  
GROSS REVENUE:2   
TOTAL ANNUAL CATCH
41 250 kg  
GROSS ANNUAL REVENUE
Shs.20/kg825 000825 000  
    
OPERATING COSTS:3   
TOTAL ANNUAL WEIGHT CREW FISH
825 kg  
@ TOTAL ANNUAL COST
Shs.20/kg-16 500 
    
TOTAL ANNUAL COST OTHER CREW FOOD
 -27 500 
    
ANNUAL CREW CATCH SHARE
17.5%-144 375   
    
ANNUAL FUEL AND OIL COST
 -321 750   
    
MAINTENANCE REPLACEMENT (DEPRECIATION)
20% Investment-74 000 
NETS (1 year)
Shs.2 500 Ea.-125 000   
ENGINE (6 years)
Shs.29 167/y-29 167 
CANOE (4 years)
Shs.17500/y-17 500-755 792
    
MANAGEMENT OPPORTUNITY COST:4Shs.31200/y-31 200  -31 200
    
NET REVENUE:5   
RETURN TO CAPITAL
     38 008
RATE OF RETURN ON INVESTMENT
10%  
NET REVENUE TO OWNER
     69 208
    
TOTAL REVENUE TO A CREW MEMBER     37 675
(AS PERCENTAGE OF MINIMUM WAGE)
242%  

NOTES

1. Equipment and Gear
Canoe dimensions are about 9 m in length, 1.8 m beam. Nets are assumed to be 50 in number, of the “tyre” type.

2. Gross Revenue
Catch rate, fishing days, and beach price for Nile perch as in Table 3.10.

3. Operating Costs
Crew size for motorised units is assumed to be 3 out of 5 persons working in rotation. Fish and other food for the crew are as in Table 3.10. The catch share for the crew is taken as 17.5%. Actual share proportions are mostly 15 or 20% of the catch, according to information collected from fishermen. Fuel per fishing day is 20 1, at Shs. 55/1. Oil per fishing day is 500 ml, at a cost of Shs. 70. Maintenance is reckoned at 20% of investment. Depreciation on canoe and nets is as in Table 3.10. Engine life is assumed to be 6 years.

4. Management Opportunity Cost
Figured as in Table 3.10, except that the owner of a motorised unit is assumed to be working full time.

5. Net Revenue
Return to capital is gross revenue less all costs. Rate of return on investment is return to capital divided by capital investment. Net revenue to owner is the return to capital plus the opportunity cost of management. Total revenue to a crew member is crew share plus benefits divided by a total crew size of five.

TABLE 4.1

ESTIMATES OF STANDING STOCKS OF MAJOR FISH SPECIES BY COUNTRY
(1968–1971, in tonnes)

 KenyaTanzaniaUgandaAll areas
Species:    %
Haplochromis spp 1
36 694
321 282
205 592
563 568
83.00
O. esculentus
636
9 569
1 624
11 829
1.74
O. variabilis
12
88
376
476
0.07
O. niloticus
48
912
535
1 495
0.22
T. zillii
-
6
53
59
0.01
O. leucostictus
-
-
29
29
0.00
Bagrus docmac
2 788
22 131
14 766
39 685
5.84
Clarias mossambicus
1 936
14 138
10 885
26 959
3.97
Xenoclarias spp
65
144
238
447
0.07
Protopterus aethiopicus
896
5 022
3 625
9 543
1.41
Lates niloticus
93
7
302
402
0.06
Synodontis victoriae
309
13 256
9 644
23 209
3.42
S. afrofischeri
42
-
9
51
0.01
Barbus altianalis
21
77
155
213
0.03
Labeo victorianus
14
53
1
68
0.01
Mormyrus kannume
28
119
181
328
0.05
Schilbe mystus
45
547
54
646
0.10
Total
43 627
387 351
248 029
679 007
100.01
Area (ha)
416 730
3 767 490
3 139 890
7 324 110
 
Density (kg/ha)
104.7
102.8
79.0
92.7
 

1 Based on hauls made with small-meshed (38 and 19 mm stretched mesh) codends.

Source : FAO (1973)

TABLE 4.2

QUANTITY VALUE OF FISH LANDED BY LAKE REGION, 1970–1981 FRESH WATER FISH

 Lake VictoriaLake AlbertLake KyogaLake Edward and GeorgeLake WamalaAlbert NileOther watersTOTALS
FISH CATCH (1 000 tonnes)
197138.1  9.5  89.711.75.24.23.9162.3
197233.910.4  95.112.34.14.34.0164.1
197332.513.0100.511.04.34.24.0169.5
197424.513.5105.010.56.54.03.5167.5
197516.918.7118.713.26.37.16.8173.2
197611.112.3145.812.54.34.52.1192.6
197715.720.6167.012.01.11.81.3219.5
197814.220.6167.011.81.85.71.1223.3
197912.017.0133.0  9.62.04.51.8179.9
198010.013.0131.0  7.01.03.20.7165.9
198117.0  6.0130.0  5.03.83.03.0167.8
198213.010.0138.0  6.90.51.00.6170.0

Source : Uganda Ministry of Animal Industry and Fisheries, 1983

TABLE 4.3

UGANDA - L. VICTORIA WATERS ANNUAL CATCHES BY SPECIES
1975–1982

Catch and % by species
Species197519761977197819791980a1981a1982a
O. esculentus70 (0.5)50 (0.5)760 (4.9)760 (4.9)180 (1.1)   
O. niloticus5 890 (38.0)1 300 (11.7)1 100 (7.1)1 100 (7.1)750 (4.5)19 700  6 300  4 300
O. variabilis860 (5.5)400 (3.6)980 (6.3)970 (6.2)570 (3.4)   
O. leucostietus130 (0.8)60 (0.5)140 (0.9)140 (0.9)-   
T. zillii50 (0.3)40 (0.4)130 (0.8)130 (0.8)150 (0.9)   
Bagrus2 930(18.9)4 380 (39.5)4 910 (31.5)4 900 (31.5)6 530 (39.0)   
Lates250 (1.6)540 (4.9)460 (2.9)460 (3.0)190 (1.1)  5 60016 50020 340
Protopterus195 (12.6)1 800 (16.2)2 270 (14.6)2 300 (14.8)1 370 (8.2)   
Haplochromis1 690 (10.9)1 000 (9.0)1 560 (10.0)1 560 (10.0)1 550 (9.2)   
Clarias1 290 (8.3)1 320 (11.9)1 920 (12.3)1 900 (12.2)2 330 (13.9)   
Barbus260 (1.4)130 (1.2)530 (3.4)530 (3.4)360 (2.1)   
Synodontis70 (0.5)40 (0.4)570 (3.7)540 (3.4)2 540 (15.2)   
Mormyrus40 (0.3)20 (0.2)240 (1.5)240 (1.5)130 (0.8)   
Labeo10 (0.1)10 (0.1)30 (0.2)30 (0.2)40 (0.2)   
Engraulicypris10 (0.1)10 (0.1)  70 (0.4)   
Total15 50011 10015 60015 56016 76030 00030 00030 000

a The total annual catch for the period 1980–82 is estimated at about 30 000 t on the basis of samples from some major fish-landing sites and the catch magnitudes allocated to Lates and Oreochromis niloticus (Tilapia nilotica) are considered realistic

Source : CIFA (1983)

TABLE 4.4

L. VICTORIA
DISTRIBUTION OF THE DIFFERENT TYPES OF FISHING GEAR USED BY A SAMPLE OF FISHING VESSELS

CountryTypes of fishing gear used/No. of fishing vessels
Gillnets onlySeine nets onlyTraps onlyHooks only“Dagaa” nets onlyGillnets and hooksSeine nets and hooksGillnets and Seine netsTotal No. of fishing vessels
No.%No.%No.%No.%No.%No.%No.%No.%No.%
Tanzania  4573  711--  61035  1  1----  62100
Uganda  5666  5  6--1012--13151 --  85100
Kenya  946412  8--20142112  8--54145100
Total1956624  8--36125226  91152292100

Source : Butcher and Colaris (1975)

TABLE 4.5

L. VICTORIA - TOTAL NOMINAL CATCHES OF THE ARTISANAL FISHERIES BY COUNTRY, 1968–1979

 Years
196819691970197119721973197419751976197719781979
Kenya  16 400  17 40016 40014 90016 00016 80017 200  16 300  18 700    19 300 23 900  30 600
Tanzania  59 400  53 90048 30042 60040 90049 60041 700  46 600  50 600    65 400  46 500  55 100
Uganda  40 500  41 20034 80038 10033 90032 50030 000a30 000a30 000a   30 000a  30 000a   30 000a
Total116 300112 50099 50095 60090 80098 90088 900  92 900  99 300  114 700100 400115 700

a Uganda's total annual catch assumed to be less than the 1973 magnitude, following the deterioration of the fishing industry during the abnormal economic period 1973–79.

Source : CIFA (1982)


Figure 4.1

Figure 4.1 Percentage species composition (by weight) of various species in trawl and commercial gillnet catches for the northern part of the Uganda sector of Lake Victoria for the period 1981–1983 (S. esculentus = O. esculentus; S. variabilis = O. variabilis; S. niloticus = O. niloticus; and S. leucostictus = O. leucostictus)

Source : Okaronon et al. (1984)


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