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Fish Diversity, Community Structure, Feeding Ecology, and Fisheries of Lower Omo River and the Ethiopian Part of Lake Turkana, East Africa
Fish Diversity, Community Structure, Feeding Ecology, and Fisheries of Lower Omo River and the Ethiopian Part of Lake Turkana, East Africa Mulugeta Wakjira Addis Ababa University June 2016 Cover photos: Lower Omo River at Omorate town about 50 km upstream of the delta (upper photo); Lake Turkana from Ethiopian side (lower photo). © Mulugeta Wakjira and Abebe Getahun Fish diversity, Community structure, Feeding ecology, and Fisheries of lower Omo River and the Ethiopian part of Lake Turkana, East Africa Mulugeta Wakjira A Thesis Submitted to the Department of Zoological Sciences, Addis Ababa University, Presented in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Biology (Fisheries and Aquatic Sciences) June 2016 ADDIS ABABA UNIVERSITY SCHOOL OF GRADUATE PROGRAM This is to certify that the thesis prepared by Mulugeta Wakjira entitled, "Fish Diversity, Community Structure, Feeding Ecology, and Fisheries of lower Omo River and the Ethiopian part of Lake Turkana, East Africa", and submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Biology (Fisheries and Aquatic Science) complies with the regulations of the university and meets the accepted standards with respect to originality and quality. Signed by the Examining Committee Examiner (external): Dr. Leo Nagelkerke Signature ____________ Date_________ Examiner (internal): Dr. Elias Dadebo Signature ____________ Date_________ Advisor: Dr. Abebe Getahun Signature ____________ Date__________ ____________________________________________________________ Chair of Department or Graduate Program Coordinator Abstract Ethiopia has a freshwater system in nine major drainage basins which fall into four ichthyofaunal provinces and one subprovince. Omo-Turkana Basin, spanning considerable geographic area in southwestern Ethiopia and northern Kenya, essentially consists of Omo River (also known as Omo-Gibe) and Lake Turkana. -
Fishery Studies of Ribb River, Lake
- Fishery Studies of Ribb River, Lake !Ib @b Tana Basin, Ethiopia #!b Public Disclosure Authorized * m b !!B Final Report lib- Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Presented to the World Bank-financed Ethiopian-Nile Irrigation and Drainage Project Coordination Office, Ministry of Water Resources BY: Abebe Getahun (PhD) ------LeadAquatic Ecologist Eshete Dejen (PhD) -------Aquatic Ecologist Public Disclosure Authorized Wassie Anteneh (MSc) -------Aquatic Ecologist January 2008 Addis Ababa, Ethiopia Ribb River Fishery Studies: Final Report January 2008 Table of Contents Content Page Table of contents i List of Tables 11 .. List of Figures 111 Acknowledgments iv Acronyms vi Executive Summary 1 Background 5 Ethiopian Drainage basins 5 Ethiopian Freshwater fishes 5 Lake Tana 7 Lake Tana fishes and fisheries 8 Migration in fishes 9 The effects of dam building on fishes 10 The initiation and execution of this study 13 Objectives of the study 14 Study sites, Materials and Methods 14 Study sites 14 Materials and Methods 19 Results and Discussions 22 Fish species diversity from Ribb River and its tributaries 22 Fish species abundance in the Ribb River and its tributaries 2 5 Length-weight relationship of the dominant Labeobarbus spp. 2 8 Role of Labeobarbus spp in the food web of Lake Tana 30 Gonad Maturity status and migration behavior of Labeobarbus spp. 3 1 Spawning Segregations 36 Spatial segregation 36 Temporal segregation 38 Suitable spawning habitats in the Ribb River and its tributaries 3 8 Farmer's use of fish from Ribb River and its tributaries 43 The contribution of Ribb fishes to Lake Tana fish ecology and production 44 Species composition of Labeobarbus spp. -
Spatio-Temporal Distribution of Labeobarbus Species in Lake Tana
International Journal of Fisheries and Aquatic Studies 2018; 6(2): 562-570 E-ISSN: 2347-5129 P-ISSN: 2394-0506 (ICV-Poland) Impact Value: 5.62 Spatio-temporal distribution of Labeobarbus species in (GIF) Impact Factor: 0.549 IJFAS 2018; 6(2): 562-570 Lake Tana © 2018 IJFAS www.fisheriesjournal.com Received: 21-01-2018 Takele Shitaw, Shewit G Medehin and Wassie Anteneh Accepted: 22-02-2018 Takele Shitaw Abstract Department of Fisheries Wetland This study was conducted from May to December 2016 and the aim was to investigate the spatio- and Wild Life Management, temporal distribution of Labeobarbus species of Lake Tana. Descriptive statistics was used to present the Bahir Dar University College of data. Chi-Square Test was used to compare the spatial variations of species between areas, the temporal Agriculture and Environmental variations between seasons. Labeobarbus intermedius was the most dominant specie, containing 38.8 % Sciences, Ethiopia of catch followed by L. tsanensis, L. platydorsus, L. brevicephalus within a catch composition of, 18.96%, 13.1%, 10.5%, respectively. Labeobarbus dainellii and L. gorguari were rarely collected. Shewit G Medehin Labeobarbus species of Lake Tana showed significant variation in catches at four sampling sites Department of Fisheries Wetland (p<0.01) and also these species showed significant variation in dry and rainy seasons (p<0.01). L. and Wild Life Management, intermedius, L. tsanensis, L. brevicephalus, L. nedgia, L. gorgorensis, L. truttiformis were significantly Bahir Dar University College of more abundant in rainy season than dry season. The maximum possible diversity of four sampling site. Agriculture and Environmental The highest ‘J’ value was obtained at Gumara site with the value of 0.5. -
Of Lake Tana to Arno-Garno River, Lake Tana Sub-Basin, Ethiopia
SINET: Ethiop. J. Sci., 35(2):95–106, 2012 © College of Natural Sciences, Addis Ababa University, 2012 ISSN: 0379–2897 SPAWNING MIGRATION OF LABEOBARBUS SPP. (PISCES: CYPRINIDAE) OF LAKE TANA TO ARNO-GARNO RIVER, LAKE TANA SUB-BASIN, ETHIOPIA Shewit Gebremedhin 1, Minwyelet Mingist 1, Abebe Getahun 2 and Wassie Anteneh 3 1Department of Fisheries, Wetlands and Wildlife Management, Bahir Dar University, PO Box 79, Bahir Dar, Ethiopia; E-mail: [email protected] 2Department of Zoological Sciences, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia 3Department of Biology, Bahir Dar University, PO Box 79, Bahir Dar, Ethiopia ABSTRACT: The spawning migration of Labeobarbus species of Lake Tana to Arno-Garno River was studied from July to December 2010. Five sampling sites, based on the nature, flow-rate of the river, human interference and suitability for fish spawning were selected by preliminary survey. Fish were sampled monthly in the non-peak spawning season (July, November and December) and bimonthly in the peak spawning season (August to October) using 6, 8, 10, 12 and 14 cm stretched mesh size gillnets. A total of 1077 Labeobarbus specimens were collected. Labeobarbus intermedius, L. brevicephalus, L. nedgia and L. tsanensis were the dominant species, contributing 93.03% of the total catch. The monthly gonado-somatic index indicated that the peak spawning season for Labeobarbus species was from August to October. Labeobarbus intermedius and L. tsanensis were the first species to aggregate at the river mouth starting from July and L. brevicephalus and L. nedgia aggregate starting from September. Labeobarbus intermedius was the first to migrate to the upstream sites starting from the end of July followed by L. -
Length-Weight Relationship and Reproduction of Fishes in Gilgel
International Journal of Fisheries and Aquatic Studies 2020; 8(5): 83-91 E-ISSN: 2347-5129 P-ISSN: 2394-0506 (ICV-Poland) Impact Value: 5.62 Length-weight relationship and reproduction of fishes (GIF) Impact Factor: 0.549 IJFAS 2020; 8(5): 83-91 in Gilgel Abay, Andassa, Jemma and Koga Rivers, Blue © 2020 IJFAS www.fisheriesjournal.com Nile, Amhara region, Ethiopia Received: 01-07-2020 Accepted: 03-08-2020 Yibeletal Aynalem and Minwyelet Mingist Yibeletal Aynalem Woldia University, Department of Animal Production, and Technology, Abstract P.O.Box 400, Woldia, Ethiopia Length-weight relationship, frequency distribution and reproduction of fishes in Gilgel Abay, Andassa, Jemma and Koga Rivers were studied by using gillnets and monofilaments of different mesh sizes, cast Minwyelet Mingist Bahir Dar University, College of nets, hook and lines. Fish species identification was done by using literature and specimen deposited in Agriculture and Environmental the laboratory. Totally, 1106 fish specimens were collected from four Rivers. Three families and thirteen Sciences, Department of Fisheries, species of fishes were identified four Rivers. Labeobarbus intermedius, Varicorhinus beso, L. nedgia and Wetlands and Wildlife Management, Clarias gariepinus were the most dominant fish species found in both rivers. Length-weight relationship P.O.Box 79, Bahir Dar, Ethiopia of L. intermedius, V. beso, L. nedgia and C. gariepinus were curvilinear and statically significant (p<0.001). There was significant difference in Fulton condition factor for the dominant fish species between Andassa and Gilgel Abay Rivers. Absolute fecundity of L. intermedius, L. nedgia and V. beso was linearly related to total length, total weight and gonad weight. -
Ichthyofauna of Gibe Sheleko National Park and Some Morphometric Relationships of Fish of the Tributary Rivers, Southern Ethiopia
Journal of Fisheries eISSN 2311-3111 Volume 9 Issue 1 April 2021 pISSN 2311-729X Peer Reviewed | Open Access | Online First Original Article Ichthyofauna of Gibe Sheleko National Park and some morphometric relationships of fish of the tributary rivers, Southern Ethiopia Sefi Mekonen1 Abera Hailu2 1 Department of Biology, College of Natural and Computational Science, Debre Berhan University, Ethiopia 2 Department of Wildlife and Ecotourism Management, Wolkite University, Ethiopia Correspondence Sefi Mekonen; Department of Biology, College of Natural and Computational Science, Debre Berhan University, Ethiopia [email protected] Manuscript history Received 9 February 2021 | Revised 16 April 2021 | Accepted 20 April 2021 | Published online 27 April 2021 Citation Mekonen S, Hailu A (2021) Ichthyofauna of Gibe Sheleko National Park and some morphometric relationships of fish of the tributary rivers, Southern Ethiopia. Journal of Fisheries 9(1): 91206. Abstract Understanding of Ichthyofaunal diversity is a major gateway for the conservation of waterbodies in the world. Ethiopia has a rich Ichthyofaunal diversity, although they are poorly known. This study was carried out in two tributary rivers (Gibe and Wabe) of Gibe Sheleko National Park to investigate Ichthyofaunal diversity and morphometric characteristics of fish. By using monofilament gill-nets, fish were collected, identified and measured their morphometric. A total of 10 species were identified, dominated by Synodontis schall, followed by Labeobarbus nedgia and Labeobarbus intermedius. According to the Index of Relative Importance, S. schall was also first (49.13%), followed by L. intermedius (15.49%). Gibe River had a higher number of species than Wabe River. The Shannon Diversity Index in Gibe River was also higher (2.09) than Wabe (1.84) during the dry season, but lowest in the wet season (1.52 and 1.57 respectively). -
Authors Guidelines
Authors Guidelines ZANCO JOURNAL OF PURE AND APPLIED SCIENCES The official scientific journal of Salahaddin University-Erbil http://zancojournals.su.edu.krd/index.php/JPAS/index FOCUS AND SCOPE ZANCO Journal of Pure and Applied Sciences (ZJPAS) is an international, multi-disciplinary, peer-reviewed, double-blind and open-access journal that enhances research in all fields of basic and applied sciences through the publication of high-quality articles that describe significant and novel works; and advance knowledge in a diversity of scientific fields. ZJPAS welcomes submission of articles from all aspect of basic and applied science (Biology, Chemistry, Physics, Geology and Mathematics), environmental Science, agriculture, engineering, information technology, petroleum and biomedical sciences, also from cross- disciplinary fields. ZJPAS is published one volume, 6 issues per year. All accepted articles are granted free online immediately after publication, which permits its users to read, download, copy, distribute, print, search, or link to the full texts of its articles, thus facilitating access to a broad readership. MANUSCRIPT PREPARATION Language: Manuscripts should be written in clear and concise English. Contributors who are not native English speakers are strongly advised to ensure that a colleague fluent in the English language or a professional language editor has reviewed their manuscript. At proof stage, only minor changes other than corrections of printers’ errors are allowed. Cover letter: Each manuscript should be accompanied by a cover letter containing a brief statement by the authors describing the novelty and importance of their research. General format and length: Type the manuscript (including table legends, figure legends and references) double-spaced using 12 font size. -
Bahir Dar University College of Agriculture and Environmental Sciences
Bahir Dar University College of Agriculture and Environmental Sciences Spawning Migration of Labeobarbus species of Lake Tana to Arno-Garno River, Lake Tana sub-basin, Ethiopia By Shewit Gebremedhin Kidane A Thesis Submitted to the Graduate Program in Partial Fulfillment of the Requirements for the Degree of Master of Science in Agriculture and Environmental Sciences (Fisheries and Wetlands Management) June, 2011 Bahir Dar, Ethiopia Bahir Dar University College of Agriculture and Environmental Sciences Spawning Migration of Labeobarbus species of Lake Tana to Arno-Garno River, Lake Tana sub-basin, Ethiopia By Shewit Gebremedhin Kidane A Thesis Submitted to the Graduate Program in Partial Fulfillment of the Requirements for the Degree of Master of Science in Agriculture and Environmental Sciences (Fisheries and Wetlands Management) June, 2011 Bahir Dar, Ethiopia ii Declaration This is to certify that this thesis entitled “Spawning migration of Labeobarbus species of Lake Tana to Arno-Garno River, Lake Tana sub-basin, Ethiopia, submitted in partial fulfillment of the requirements for the award of Degree of Master of Science in Fisheries and Wetland Management to the Graduate Program of the College of Agriculture and Environmental Sciences, Bahir Dar University by Shewit Gebremedhin Kidane (ID. No. CAES/R/288/2002) is an authentic work carried out by him under our guidance. The matter embodied in this project work has not been submitted earlier for award of any degree or diploma to the best of our knowledge and belief. Shewit Gebremedhin -
Riverine Fishery, Lakes, Dams and Fish Diversity in Water Bodies in Amhara
International Journal of Fisheries and Aquatic Studies 2020; 8(5): 143-147 E-ISSN: 2347-5129 P-ISSN: 2394-0506 (ICV-Poland) Impact Value: 5.62 Riverine fishery, lakes, dams and fish diversity in water (GIF) Impact Factor: 0.549 IJFAS 2020; 8(5): 143-147 bodies in Amhara region: Review © 2020 IJFAS www.fisheriesjournal.com Received: 20-06-2020 Yibeletal Aynalem Nurie Accepted: 15-08-2020 Yibeletal Aynalem Nurie Abstract Woldia University, Department This review paper assesses riverine fishery, lakes, dams or reservoir, and fish diversity in water bodies in of Animal Production, and Amhara Region. Amhara National Regional State (ANRS) is one of the nine ethnic divisions of Ethiopia. Technology, P.O.Box 400, It is located in the north western and north-central part of Ethiopia. Amhara region has a rich diversity of Woldia, Ethiopia ichthyofauna in its lakes, rivers, dams and reservoirs, although they are poorly known in terms of potential and taxonomic characteristics. Amhara region has 9 lakes, 4 know dams or reservoirs, 497 annually flow rivers, 297 seasonal flowers and 2860 streams. So the region is the riches water resource in Ethiopia. It has native and exotic fish species in different water bodies. Lake tana is the biggest lakes in Ethiopia and it founds in amhara region. In this region there are three major water shade area which namely Abbay, Tekeze and Awash and they are rcich resource in riverine fishry. Tekeze, Koka and Rib dams or reservoir are an artificial lakes, covers a total area of 16000, 1800, and 20000 hectare lands respectively. -
Survey on Diversity, Relative Abundance and Hydrology of Fishes in Ayima, Alatish and Gelegu Rivers, of Alatish National Park, Ethiopia
vv ISSN: 2455-8400 DOI: https://doi.org/10.17352/ijafs LIFE SCIENCES GROUP Received: 19 December, 2020 Research Article Accepted: 17 February, 2020 Published: 18 February, 2020 *Corresponding author: Dereje Tewabe, Bahir-Dar Fish- Survey on diversity, relative eries and Other Aquatic Life Research Center, P.O.Box 794, Bahir-Dar, Ethiopia, E-mail: abundance and hydrology Keywords: Icthyofauna; Wetlands; Gill net; Fishermen; Fishing of fi shes in Ayima, Alatish https://www.peertechz.com and Gelegu Rivers, of Alatish National Park, Ethiopia Dereje Tewabe* Bahir-Dar Fisheries and Other Aquatic Life Research Center, Ethiopia Abstract Fish species of rivers Ayima, Alatish, and Gelegu were studied from samples collected by 6, 8, 10,12 and 14 cm stretched mesh size gillnet, monofi lament of different mesh size, hook-lines, fykenet and castnet. The fi shes were collected during October, 2008 to January, 2009. The samples were collected in the dry season and wet season. 20 fi sh species were identifi ed from two rivers, but fi sh was not sampled from Alatish River due to its short lived seasonality, and these are included in the families Centropomidae, Cichlidae, Bagridae, Clariidae, Mochokidae, Osteoglossidae, Characidae, Citharinidae and Cyprinidae. A higher number of species was recorded from river Ayima with 20 species, whereas only two species were identifi ed from Gelegu River. Fishing activities was destructive type, using plant poisoning materials, and chemicals (Malathion) which is non selective and dangerous for all biota. Introduction this rapid assessment was targeted to identify hydrological issues of different rivers and icthyofauna of Alatish National Ethiopia could be called a water tower of Eastern Africa in park. -
Fish Biology and Fisheries of the Floodplain Rivers in the Alitash National Park, Northwestern Ethiopia by Alamrew Eyayu
FISH BIOLOGY AND FISHERIES OF THE FLOODPLAIN RIVERS IN THE ALITASH NATIONAL PARK, NORTHWESTERN ETHIOPIA BY ALAMREW EYAYU GRADUATE PROGRAMS COLLEGE OF NATURAL AND COMPUTATIONAL SCIENCES DEPARTMENT OF ZOOLOGICAL SCIENCES FISHERIES AND AQUATIC SCIENCES STREAM A thesis submitted to the Department of Zoological Sciences, Addis Ababa University in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Biology (Fisheries and Aquatic Sciences) Addis Ababa University, Ethiopia May, 2019 ADDIS ABABA UNIVERSITY SCHOOL OF GRADUATE STUDIES This is to certify that the thesis prepared by Alamrew Eyayu entitled “Fish biology and fisheries of the floodplain rivers in the Alitash National Park, northwestern Ethiopia", and submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Biology (Fisheries and Aquatic Sciences Stream) complies with the regulations of the university and meets the accepted standards regarding originality and quality. Signed by the Examining Committee: Examiner _______________________ Signature _______________ Date___________ Examiner _______________________ Signature _______________ Date___________ Advisor ________________________ Signature _______________ Date___________ ____________________________________________________________ Chair of Department or Graduate Program Coordinator ii Abstract Ethiopia is a landlocked country endowed with over 13637 km2 of standing water surface area and 8065 km river length arranged into 12 drainage basins and harbor unevenly diversified -
Addis Ababa University School of Graduate Studies Diversity, Relative
ADDIS ABABA UNIVERSITY SCHOOL OF GRADUATE STUDIES DIVERSITY, RELATIVE ABUNDANCE AND BIOLOGY OF FISHES IN SOME RIVERS, AND CESTODE PARASITES OF AFRICAN CATFISH (CLARIAS GARIEPINUS ) IN SOME LAKES OF ETHIOPIA BY MOGES BELETEW ATHESIS SUBMITTED TO THE SCHOOL OF GRADUATE STUDIES,ADDIS ABABA UNIVERSITY IN PARTIAL FULFILLMENT FOR THE DEGREE OF MASTER OF SCIENCE IN BIOLOGY JULY, 2007 DECLARATION I, the undersigned declare that this thesis is my work and that all sources of material used for the thesis have been correctly acknowledged. Name MOGES BELETEW Signature Date of submission 07 August 2007 Patrice Mugny, of the cultural Municipality of Geneva for the generous financial support offered to my training stay at Geneva Museum, Danielle Decrouez, Director of the Natural History Museum of Geneva for allowing me to stay and work at the Museum. She and her staff members should also be appreciated for giving me opportunities to visit Museum collection, to use their facilities for my interesting training, Mrs. Janick who shared her long year’s knowledge and skill in staining of sections of Cestode parasites during my training, W/ro Sewmehon Demessie, Head of Bahir Dar FOALRC, and her staff members should receive thanks for they offered all logistic and other assistance during my all fieldwork and her contribution to the study by securing additional fund for field work with a nice coordination and cooperation, Ato Biniam Hailu, Gebeyehu Fantahun and Wondie Zelalem for their considerable assistance in the fieldwork. They played a great role in the collection of specimens in the remote area where it was even life threatening, Ato Amare Mengiste, Asnake Ayenekulu, and Habtamu Muche for their skillful driving in the field.