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Proceeding of the Second National Conference of the Ethiopian Fisheries and Aquatic Sciences Association (EFASA) February 20-21, 2010, Bahir Dar, Ethiopia

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Proceeding of the Second National Conference of the Ethiopian Fisheries and Aquatic Sciences Association (EFASA) February 20-21, 2010, Bahir Dar, Ethiopia Proceeding of the Second National Conference of the Ethiopian Fisheries and Aquatic Sciences Association (EFASA) February 20-21, 2010, Bahir Dar, Ethiopia “Management of shallow water bodies for improved productivity and peoples' livelihoods in Ethiopia” Bahir Dar, 2010 Management of shallow water bodies for improved productivity and peoples' livelihoods in Ethiopia 19- 22 February 2010 Second National Conference of the Ethiopian Fisheries and Aquatic Sciences Association (EFASA) Bahir Dar Ethiopia Published by EFASA Addis Ababa Ethiopia Website: https://www.aau.edu.et/index.php/efasa-home Email: [email protected] ~ i ~ Title : Management of shallow water bodies for improved productivity and peoples' livelihoods in Ethiopia Publisher : The Ethiopian Fisheries and Aquatic Sciences Association (EFASA), Addis Ababa, Ethiopia Copyright : EFASA, 2010 All right of the publisher are reserved by law. This publication is however free for all non-commercial education purposes. Any other uses require official consent and approval of EFASA. ISBN : 978-99944-819-1-0 The articles in this proceeding can be referred to as for instance: Ayalew wondies (2010): Current land use practices and possible management strategies in shore area wetland ecosystem of Lake Tana: Towards improving livelihoods, productivity and biodiversity conservation. In: Management of shallow water bodies for improved productivity and peoples' livelihoods in Ethiopia . Editors: Seyoum Mengistu and Brook Lemma, EFASA, Addis Ababa University Printing Press, Addis Ababa, 9-16. ~ ii ~ Table of contents Preface Acknowledgments Opening remarks : Dr. Brook Lemma, President of EFASA 1 Keynote address : His Excellency Ato Alemu Admas, Deputy Bureau Head, Bureau of Agriculture and Rural Development, Bahir Dar, Amhara region, Ethiopia 4 Opening speech : Ato Tesfaye Mengist, Process Owner for Extension, Bureau of Agriculture and Rural Development, Bahir Dar, Amhara Region, Ethiopia 7 Part ONE: Oral presentations Current land use practices and possible management strategies in shore area wetland ecosystem of Lake Tana by Ayalew wondie 9 Enhancing wetland ecosystem services through engineering interventions: a management plan for treatment of municipal waste water, Bahir Dar Gulf of Lake Tana, Ethiopia by Gorraw Goshu 17 Assessment of current fish status of Koga River and Dam, Mecha Woreda, West Gojjam, Ethiopia by Mihret Endalew Tegegnie 24 National Aquaculture development strategies of Ethiopia: a road map to building a healthy and dynamic aquaculture sub-sector by Hussien Abegaz Issa 31 The aquaculture boom in the west shoa zone, oromia, Ethiopia by Daba Tugie 40 The effect of stocking density and supplementary feed on growth performance of Nile Tilapia (( Oreochromis niloticus Linneaus, 1758) in cage culture system in Lake Elen, Ethiopia by Abebe Tadesse, Abebe Getahun and Seyoum Mengistu 48 Pond fish farming in practice: challenges and opportunities in Amhara region b y Chalachew Aragaw 61 Fish post-harvest losses and the possible ways to reduce the losses in Lake Koka by Yared Tigabu 69 Comparative of growth performance in pond culture of four Nile tilapia (Oreochromic niloticus) strains collected from different Ethiopian freshwater lakes by Kassaye Balkew Workagegn and Gjoen Hans 74 ~ iii ~ Technical and socio-economic characteristics of fishing activities fish handling and processing in Ethiopia by Abera Degebassa 104 Economic analysis of capture fishery: The case of Lake Babogaya by Lemma Abera Hirpo 108 Part TWO: Poster presentations A comparative study on the effect of three drying methods for better preservation by Abera Degebassa and Tesfaye Alemu Aredo 117 The effect of supplementary feeding on water quality during cage culture practice of Oreochromis niloticus in Lake Kuriftu, Ethiopia by Ashagrie Gibtan, Abebe Getahun and Seyoum Mengistu 123 Growth of Labeobarbus spp. in aquaria and pond conditions by Belay Abdissa, F. N. Shkil, K. F. Dzerzhiskii, Wondie Zelalem and Mesfin Tsegaw 133 Growth, mortality and recruitment of Clarias gariepinus in the northern part of Lake Tana by Belay Abdissa 139 Species composition and relative abundance of fish species in major rivers of Amhara region,Abay and Tekeze basins, Ethiopia by Dereje Tewabe and Goraw Goshu 146 The biodiversity of fish communities of nine Ethiopian lakes along a north-south gradient: threats and possible solutions by Eshete Dejen, J. Vijverberg and Abebe Getahun 155 Benthic macroinvertebrate metrics in relation to physic chemical parameters in some selected rivers in Ethiopia by Getachew Beneberu and Seyoum Mengistu 161 Assessment of downstream dispersal of juveniles of the migratory riverine spawning Labeobarbus spp. of Lake Tana b y Wassie Anteneh, Abebe Getahun and Eshete Dejen 172 Ecological assessment of Dibankobahir wetland ecosystem in North West Amhara Region, Ethiopia by Yezbie Kassa 181 Survey of anthropogenic impact on rift valley water bodies: The case of Lake Zeway, Langanoo and Abijata Mathewos by Mathewos Hailu , Getachew Senbete, Megersa Hindabu and Birhanu Taddese 210 ~ iv ~ Preface The Ethiopian Fisheries and Aquatic Sciences Association (EFASA) has been around for the last three years only. Since then it has conducted conferences and sponsored international ones such as the Pan-African Fish and Fisheries Association (PAFFA) at the Economic Commission for Africa Hall in 2008 and the aquaculture conference organized by the British Council and the Development Partnership in Higher Education (DelPHE) at Bahir Dar in 2009. It has published the proceedings of its national conferences. The first one is available at its website and the second is this one you are now reading. To achieve these goals bringing together all the members under one umbrella of EFASA was not an easy task and as well carrying out the day-to-day activities of the association. Thanks to all EFASA members who have always showed the motivation and interest to remain at standby to cooperate and EFASA always remains indebted to all those institutions and individuals who assisted it financially and technically in all its endeavors. This proceeding presents works of many young Ethiopians who had to conduct their research with the obvious hardships we see in developing countries. If there are any shortcomings in their research reports, please realize that it is not lack of capacity in the persons as such but the hardships to conduct research, lack of field and laboratory facilities and the subsistence way of life they carry on with. They proceed this way and EFASA continues to bring their efforts to daylight until such time as our country pulls through development to reach where other countries have done so. On behalf of the Executive Committee of EFASA and myself I seize this opportunity to congratulate all the authors for their achievements and the supporters that provided them with the financial and technical resources. As President of EFASA I strongly believe with the utmost confidence that EFASA members will continue to produce usable knowledge and technologies in the field that will contribute their shares towards the benefits of the general public and the development of this nation. Brook Lemma, PhD President of EFASA ~ v ~ Acknowledgments The Ethiopian Fisheries and aquatic Sciences association (EFASA) would like to extend its heartfelt gratitude to the following institutions that have supported it to finance the second Annual Conference on "Management of shallow water bodies for improved productivity and peoples' livelihood in Ethiopia" to be held from 20-21 February 2010 in Bahir Dar. 1. Bureau of Agriculture and Rural Development, Rural Capacity Building Project, Amhara Regional State, Bahir Dar 2. Amhara Regional Agricultural Research Institute, ARARI 3. Food and Agriculture Organization Sub-Regional office for Eastern Africa, Addis Ababa 4. Development partnership in Higher Education (DelPHE), UK 5. Ambo University 6. Haramaya University 7. Addis Ababa University 8. The Ethiopian Quality Standards Authority, Addis Ababa 9. The Ethiopian Agricultural research Institute (EAIR) 10. Department for international Development (DFID) 11. The British council 12. and others EFASA extends its acknowledgements to the Regional Organizing Committee composed of Ato Alayu Yalew and Ato Belay Abdissa from Bahir Dar Fisheries and Aquatic Life research Center, Dr. Ayalew Wondie, Bahir Dar University, and Ato Chalachew Argaw from Bureau of Agriculture and Rural Development. EFASA, 2010 ~ vi ~ Ma nagement of shallow water bodies ..., EFASA 2010 Opening remarks by the President of EFASA • His Excellency, Ato Alemu Admas, Deputy Bureau Head, Bureau of Agriculture and Rural Development • Dear Ato Tesfaye Mengist, Process Owner for Extension, Bureau of Agriculture and Rural Development • Dear invited guests • Ladies and gentlemen It is a great pleasure and honor for me to welcome you all to this Second Annual Conference of the Ethiopian Fisheries and Aquatic Sciences Association (EFASA) organized under the theme of "Management of shallow water bodies for improved productivity and peoples' livelihoods in Ethiopia" to be held here in BahirDar from today February, 19-22, 2010. In its efforts to meet its objectives with success, EFASA organizes the annual conference to bring together scientists, development agents, government institutions, non-governmental organizations and the general public who make their livelihoods in this sector of the country’s economy with the attempt to exchange new ideas, technologies and to bring into the spotlight
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