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6 Enhancing Rural Farmer Income through Fish Production121Box 6.1 (continued)Common carp – 328.6Mrigal – 73.2Bighead carp – 794.7Rohu – 317.5Total – 1514.0As the effective reservoir area (i.e., 50% of the reservoir area at FSL) is 13.6 ha,the total harvest was about 20,600 kg . With the farm-gate price of Rs. 40 kg −1 , thevalue of this harvest was about Rs. 825,000. The net profit was therefore over Rs.800,000. He pays 3% of his profit to the FO after every harvest.This financial boost motivated Mr. Karunadasa to take to CBF, and hecontinued to stock the reservoir annually. The number of fingerlings stockedin the subsequent years (29,000 in 2003, 20,000 in 2004, 25,000 in 2005,30,000 in 2006, and 25,800 in 2007) was more or less the same. He hasbecome one of the richest in the village through CBF in Dozer wewa. In 2005,however, this reservoir has now become a perennial reservoir after the diversionof water from an irrigation development project (Galamuna IrrigationDevelopment Project). This has changed the species composition in the reservoir,because carnivorous fish species such as Glossogobius giuris , Ompokbimaculatus also entered into reservoir. After this water diversion, evidently,the CBF harvest in the reservoir declined from 20,600 kg in 2003 to 8,700 kgin 2004, 9,760 kg in 2005 and 6,400 kg in 2006. Mr. Karunadasa’s success inCBF in Dozer wewa was attributed to his own interest and personal capacity,knowledge about local resources, management skills, social integration andharmony, and institutional (NAQDA) support.In April 2005, Mr. Karunadasa established a mini-nursery to rear fish fry uptofingerling size to stock in Dozer wewa. In his mini-nursery, there is a capacity torear about 180,000 fingerlings in a culture cycle. Mr. Karunadasa buys fish fryfrom the state-owned aquaculture development centre in Udawalawe at the costof 25 cents per fry. Seven members of FO assist him to maintain the mini-nursery.Three culture cycles are carried out per year to rear fry upto fingerlings andon average 100,000 fingerlings are produced per culture cycle. The selling priceof the fingerling is Rs. 2.00. Considering the cost of feeding of fingerlings usinglocally available feed, such as rice bran, the net income from fingerling productioncan be estimated to be over Rs. 100,000 per culture cycle.Establishment of community-based mini-nurseries for rearing fish fingerlingsis one of the activities of ADB-funded project. As minor-perennial reservoirs(
122 U.S. Amarasinghe and T.T.T. NguyenTable 6.4 Number of reservoirs and their total extents (50% of the area at full supplylevel, treated as effective area) and the number of fish fingerlings stocked at thetotal harvests during 2006–2007 culture cycle in different districts of Sri LankaDistrictNumberstockedExtent stocked(ha)FingerlingsstockedHarvest(kg)Anuradhapura 6 63 145,095 28,399Badulla 11 35.4 37,000 11,725Hambantota 5 46.6 25,625 2,505Kurunegala 48 576 503,515 55,098Matale 11 70 87,130 19,271Moneragala 23 134 235,080 67,950Polonnaruwa 3 27 90,000 2,540Puttalam 25 314 173,130 32,098RatnapuraTotal4136271,32328,0501,314,6254,238213,824Source: Ms. J.M. Asoka (pers. comm.)mini-nurseries is considerably facilitated. Several mini-nurseries were establishedin nine administrative districts for fingerling rearing under the auspices of ADBfundedproject (Weerakoon 2007) . Establishment of these mini-nurseries wasfacilitated by the ADB-funded project through the extension mechanism ofNAQDA (Table 6.5 ).Realizing the fact that this strategy is a promising means to improve the livelihoodsof rural people. In several other organizations also got involved in thedevelopment of CBF. Under the FAO-funded Special Program for Food Security,CBF development activities were carried out in 2002–2006 in the North CentralProvince of Sri Lanka ( http://www.fao.org/TC/spfs/srilanka/intro_en.asp). TheGTZ-funded “Fisheries Community Development and Resource ManagementProject” carried out in the southern province of Sri Lanka in collaboration withNAQDA, investigated various aspects of participatory approaches to CBF development(Wijeyaratne and Amarasinghe 2008) . Several NGOs such as SewaLanka Foundation have also carried out CBF activities in several provinces of thecountry (Creech et al. 2002) . All these projects facilitated introduction of CBFinto rural areas of the country.Cyprinus carpio was the species stocked in highest number in the 2006–2007culture cycle (Fig. 6.8 ). The fingerlings of C. carpio are easy to rear, and consequently,most mini-nursery owners prefer to raise this species. Obviously, themajor factor that influences the choice of fish species for stocking in Sri Lankanvillage reservoirs is the fingerling availability. Despite the low numbersstocked, Catla catla (catla) registered the highest harvest owing to its fastergrowth rate. Labeo rohita (rohu) is also one of the popular species among thefish farmers of mini-nurseries, and O. niloticus and Aristichthys nobilis (bigheadcarp) also resulted in significant harvests. These two species, GIFT strainof O. niloticus , Ctenopharyngodon idella (grass carp), Hypophthalmichthysmolitrix (silver carp), and Labeo dussumieri were produced in state-owned fishhatcheries.
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Sena S. De SilvaF. Brian DavyEditor
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Sena S. De Silva ●EditorsF.Brian
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ForewordWorld aquaculture has grown
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PrefaceWe are moving into a turbule
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Prefaceix• Provide a direction fo
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Contents1 Aquaculture Successes in
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Chapter 1Aquaculture Successes in A
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1 Aquaculture Successes in Asia: Co
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Chapter 2Recent Developments in Ric
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2 Recent Developments in Rice-Fish
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Chapter 3Shrimp Farmers in India: E
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3 Shrimp Farmers in India: Empoweri
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50 N.R. Umesh et al.GoalSUSTAINABLE
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52 N.R. Umesh et al.• The optimum
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54 N.R. Umesh et al.in five states
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56 N.R. Umesh et al.3.5.2.4 Facilit
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58 N.R. Umesh et al.3.7 Opportuniti
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60 N.R. Umesh et al.with similar ou
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62 N.R. Umesh et al.• Knowledge a
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64 N.R. Umesh et al.helping small f
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66 N.R. Umesh et al.ReferencesFAO/N
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68 H. Kongkeo and F.B. DavyPlate 4.
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Page 96 and 97: Chapter 5Cage Fish Culture: An Alte
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Page 178 and 179: 168 B.O. Acosta and M.V. GuptaBox 8
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Chapter 9The Role of Exotics in Chi
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9 The Role of Exotics in Chinese In
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188 S.S. De Silva et al.part of an
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190 S.S. De Silva et al.Box 10.1 A
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192 S.S. De Silva et al.other appro
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194 S.S. De Silva et al.• Effecti
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196 S.S. De Silva et al.Table 10.1
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198 S.S. De Silva et al.• Institu
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ContributorsBelen O. Acosta , BSc F
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Contributors203become more relevant
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Contributors205research on physiolo
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IndexAAcosta, B., 155Agrarian Devel
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Indexalternate rice fish farming, 2
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IndexKKanna meeting, of FOs, 112Kul
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IndexSSchizothorax spp. (Asla), 91,
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Sena S. De SilvaF. Brian DavyEditor
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