Socioeconomics of disseminating genetically improved Nile tilapia in Asia: An introduction

Dey, Madan M.; Gupta, Modadugu V.

doi:10.1080/13657300009380257

Cited by 40 publications

(18 citation statements)

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“…This species also has high market value in the global fish trade (Dey et al, 2000). Therefore, the aim of the present study was conducted to assess the effects of BFT on the growth performance, digestive enzyme activity, hematology, and immune response of GIFT in a light-limited and zero-water exchange culture system.…”

Section: Introductionmentioning

confidence: 99%

Effect of biofloc technology on growth, digestive enzyme activity, hematology, and immune response of genetically improved farmed tilapia (Oreochromis niloticus)

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Effect of biofloc technology on growth, digestive enzyme activity, hematology, and immune response of genetically improved farmed tilapia (Oreochromis niloticus)

et al. 2015

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“…De Silva et al (2004) pointed out that tilapias have made a significant contribution to food production, poverty alleviation and livelihood support in Asia and the Pacific region. GIFT strain of O. niloticus is a product of carefully conducted genetic selection and improvement strategy based on parent fish collected from four African countries (Egypt, Ghana, Kenya and Senegal) and four commercial O. niloticus strains from Israel, Singapore, Taiwan and Thailand (Eknath et al 1993;Dey and Gupta 2000). The GIFT strain has been shown to perform better than other strains of O. niloticus in pond and cage culture systems .…”

Section: Discussionmentioning

confidence: 99%

Performance of GIFT strain of <i>Oreochromis niloticus</i> in culture-based fisheries in non-perennial reservoirs, Sri Lanka

Wijenayake

Amarasinghe

Silva

2010

Sri Lanka J. Aquat.

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The superiority of Genetically Improved Farmed Tilapia (GIFT) strain of Oreochromis niloticus has been demonstrated under intensive culture conditions in ponds and cages but its performance under extensive culture conditions and interactions with other cultured species, such as in culture-based fisheries, is unknown. In the present study, performance of GIFT strain in culture-based fisheries in reservoirs of Sri Lanka was evaluated on the basis of specific growth rate, survival, species interaction and biological productivity of habitat. Fourteen non-perennial reservoirs were stocked with carps and GIFT strain and fish yield of all species in the 14 reservoirs studied ranged from 53.4 to 1800.7 kg ha -1 , which consisted of 0% to 32% of GIFT strain. Yield of GIFT strain varied from 0% to 188.3 kg ha -1 in the 14 reservoirs. Results of the analysis indicated that biological productivity of the non-perennial reservoirs had greater influence on carp yield than on yield of GIFT strain. Also, there was no significant difference (p > 0.05) between mean fish yields of GIFT strain and non-GIFT strain in culture-based fisheries of non-perennial reservoirs. High variability of specific growth rate of GIFT strain is evident in culture-based fisheries in non-perennial reservoirs. The GIFT strain, which requires supplementary feeding for achieving its maximum growth potential, may be incapable of competing with other species for natural food in the non-perennial reservoirs. As such, GIFT strain is not a suitable candidate for the development of culture-based fisheries in non-perennial reservoirs of Sri Lanka.

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“…The GIFT project was a collaborative research effort involving five separate research institutions that was implemented in the Philippines from 1988 to 1997 [29,30]. This project had the overarching goal of "increasing the quantity and quality of protein consumed in low income rural and urban populations in tropical developing countries, and in all regions of the world, leading to an increase in the income of low-income producers" [31].…”

Section: The Genetic Improvement Of Farmed Tilapia (Gift) Projectmentioning

confidence: 99%

“…This project had the overarching goal of "increasing the quantity and quality of protein consumed in low income rural and urban populations in tropical developing countries, and in all regions of the world, leading to an increase in the income of low-income producers" [31]. The collaborating institutions were the International Center for Living Aquatic Resources Management (ICLARM, now the World Fish Center), the Philippines Bureau of Fisheries and Aquatic Resources (BFAR), the Freshwater Aquaculture Center of the Central Luzon State University (FAC-CLSU), the Marine Science Institute of the University of the Philippines (UPMSI), and the Institute of Aquaculture Research, Ltd., in Norway [30]. Funding for this project was provided by the Asian Development Bank, the United Nations Development Program, and ICLARM [30].…”

Section: The Genetic Improvement Of Farmed Tilapia (Gift) Projectmentioning

confidence: 99%

Genetically-Improved Tilapia Strains in Africa: Potential Benefits and Negative Impacts

2014

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Two genetically improved tilapia strains (GIFT and Akosombo) have been created with Oreochromis niloticus (Nile tilapia), which is native to Africa. In particular, GIFT has been shown to be significantly superior to local African tilapia strains in terms of growth rate. While development economists see the potential for food security and poverty reduction in Africa from culture of these new strains of tilapia, conservationists are wary of potential ecological and genetic impacts on receiving ecosystems and native stocks of tilapia. This study reviews the history of the GIFT technology, and identifies potential environmental and genetic risks of improved and farmed strains and tilapia in general. We also estimate the potential economic gains from the introduction of genetically improved strains in Africa, using Ghana as a case country. Employing a combination of the Economic-Surplus model and Monte Carlo simulation, we found the mean net present value (NPV) of the introduction of the GIFT strain in Ghana to be approximately 1% of the country's gross domestic product. Sensitivity analysis indicated that the difference in growth or yield between the GIFT and locally-available strains has the largest effect on mean NPV. We conclude that improvements in management practices and infrastructure could increase the yield and profitability of the local strains even if genetically-improved strains are not introduced. These improvements also will ensure the realization of the full potential of introduced strains. OPEN ACCESS

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Socioeconomics of disseminating genetically improved Nile tilapia in Asia: An introduction

Cited by 40 publications

References 1 publication

Effect of biofloc technology on growth, digestive enzyme activity, hematology, and immune response of genetically improved farmed tilapia (Oreochromis niloticus)

Effect of biofloc technology on growth, digestive enzyme activity, hematology, and immune response of genetically improved farmed tilapia (Oreochromis niloticus)

Performance of GIFT strain of <i>Oreochromis niloticus</i> in culture-based fisheries in non-perennial reservoirs, Sri Lanka

Genetically-Improved Tilapia Strains in Africa: Potential Benefits and Negative Impacts

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