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  • 1
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16556 | 6 | 2016-02-19 09:17:14 | 16556 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-06
    Description: Between July 2005 and February 2008, ten Catch Assessment Surveys (CASs) were conducted at 54 pre-selected fish landing sites in the Ugandan part of Lake Victoria comprising approximately 10% of all landing sites in each of the 11 districts sharing the lake. The CASs were conducted following regionally harmonised Standard Operating Procedures (SOPs). This report covers the CAS conducted in February 2008 and puts into context the trends generated by results of the previous surveys. The catch rates of Nile perch in gillnetting boats with motor/sail, reduced from 26.9 kg boat-1 day-1 in August 2007 to 22.8 kg boat-1 day-1 in February 2008. Whereas the catch rates of paddle Sesse boats remained more or less the same as in August 2007. The Nile perch catch rates of the long line fishery of the boats using motor/sail was similar, 35 and 36 kg boat-1 day-1 in August 2007 and February 2008 respectively but the catch rates of paddle Sesse boats using long lines showed some more increase from 19 to 22 kg boat (-1) day (-1). In the tilapia fishery, the catch rates of the parachute boats using gillnets showed further decrease in a row from 12.6 kg boat-1 day-1 in December 2006, 11.6 kg boat-1 day-1 in March 2007, 11.2 kg boat-1 day-1 in August 2007 and 10.0 kg boat-1 day-1 in February 2008. The overall impact of reduced catch rates in the predominant effort groups, e.g. gillnetting boats using motor/sail in the Nile perch fishery and Parachute boats using gillnets in the tilapia fishery overshadowed the increases in less dominant effort groups and resulted in the lowest monthly catch estimates recorded in the surveys conducted since 2005. Whereas there was a clear downward trend in the Nile perch catch rates of boats using gillnets, which corroborates with the information of declining stocks from the recent Acoustics surveys, the catch rates in the long line fishery remained stable and even somewhat increasing in the last four surveys. The factors that maintain high catches against reduction of fish biomass in the long line fishery and their effects on sustainability of the Nile perch fishery should be investigated further. The Mukene fishery, characterised by large fluctuations in the catch rates did not show much change in the last two surveys in August 2007 and February 2008 and the annual catch estimates showed an overall increase of 7% from 2005 to 2007. The Mukene fishery in the Ugandan waters of Lake Victoria remained a near shore fishery in which paddle Sesse boats using small seines or scoop nets were the dominant craft.
    Description: Implementation of a Fisheries Management Plan (IFMP) Project for Lake Victoria
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 38
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  • 2
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4926 | 424 | 2011-09-29 15:42:28 | 4926 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Multimesh, multidepth gillnet fleets are useful in assessing fish stock abundance, size distribution and depth distribution. Using data collected on net mesh selectivity for Nile perch, Lates niloticus (L.), in the Kenyan waters of Lake Victoria, suitable mesh sizes for gillnet fleets for use in the Lake Victoria Fisheries Research Project were determined. The modal selection length for Nile perch in the mesh sized used in the earlier experiment were determined, as was the size range vulnerable to capture.Initial trials suggest 60% of the Nile perch swim within 5 m of the bottom. Setting and hauling of the nets is simple and quick, allowing the nets to be used at the same time as other sampling programmes.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/06; This is Part 2 of LVFRP Technical Document No 6; Part 1 of LVFRP Technical Document No 6's title is: Report on third FIDAWOG workshop held at the Triangle Hotel, Jinja, 29 March to 1 april 1999.
    Keywords: Fisheries ; Management ; Africa ; Kenya ; Lake Victoria ; stock assessment ; gillnet fleets ; Lates niloticus
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 1-12
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  • 3
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4928 | 424 | 2011-09-29 15:42:30 | 4928 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Co-management is typically known to be a resource management system that shares managerial responsibility between the state and other stakeholders of a resource. In the case of Lake Victoria, one would expect the state to be represented by the fisheries departments of Kenya, Uganda and Tanzania, while stakeholder groups may comprise fishing communities, fish processing factories and municipalities.Taking that into account, the survey's objectives were defined as:(a) To identify the difficulties and impracticalities inherent in implementing state-based regulations via a "top-down" management strategy.(b) To assess the prevalence of community-based institutions that either seek to regulate the fishery or have the potential to be used to regulate it.(c) To identify ways in which community-based regulatory and monitory systems may be established, and how these will fare over time.(d) To identify roles for national Fisheries Departments, industrial fish processors and other stakeholders.(e) To develop well-founded policy suggestions for the establishment of a co-management framework to manage the fisheries of Lake Victoria.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/11
    Keywords: Fisheries ; Management ; Policies ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders ; community-based institutions
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 1-10
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  • 4
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4929 | 424 | 2011-09-29 15:43:05 | 4929 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: In this brief introduction, we set out to provide an overview of the Lake Victoria Fisheries Research Project (LVFRP) and, more specifically, its socio-economic program, and to define the place of the Co-management Survey within the activities of the LVFRP as a whole.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/11
    Keywords: Fisheries ; Management ; Policies ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders ; community-based institutions
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 11-12
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  • 5
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4925 | 424 | 2011-09-29 15:42:26 | 4925 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Three Lake Victoria rivers were sampled to assess fish abundance and distribution in preparation for assessment of catches from the river systems. Preliminary fish abundance data indicate that fishing potential upstream is negligible but that important commercial species are present in the downstream floodplain areas. Three catfish species were recorded in the Nzoia river system that have not been found previously in the Kenyan sector of the Lake Victoria system, together with possibly two undescribed Barbus species.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/06; The document includes 6 tables.
    Keywords: Fisheries ; Limnology ; Management ; Africa ; Kenya ; Lake Victoria ; river Nzoia ; river Nyando ; river Sondu Miriu ; stock assessment ; inland fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 106-125
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  • 6
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4933 | 424 | 2011-09-29 15:42:16 | 4933 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This short book section analyses the role of Fisheries Department personnel in the process of co-management related to the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/11
    Keywords: Fisheries ; Management ; Policies ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders ; community-based institutions
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 63-64
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  • 7
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4930 | 424 | 2011-09-29 15:42:24 | 4930 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: In this book section, the theoretical background to the methodology is outlined, questionnaire development described, sample selection outlined and biases and shortcomings to the survey noted.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/11
    Keywords: Fisheries ; Management ; Policies ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders ; community-based institutions
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 13-48
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  • 8
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4932 | 424 | 2011-09-29 15:42:18 | 4932 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: As it is clearly stated in the title, this book section aims to identify fishers' livelihoods and their role as a stakeholder in the process of co-management with the other stakeholders and official institutions within the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/11
    Keywords: Fisheries ; Management ; Policies ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders ; community-based institutions
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 49-62
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  • 9
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4935 | 424 | 2011-09-29 15:41:19 | 4935 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This book section aims to synthesise the results of the surveys related to the LVFRP by developing different strategies to implement a sustainable and participative co-management model.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/11
    Keywords: Fisheries ; Management ; Policies ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders ; community-based institutions
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 74-94
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  • 10
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4934 | 424 | 2011-09-29 15:42:03 | 4934 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This book section analyses the role of fish processing factories in the process of co-management related to the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/11
    Keywords: Fisheries ; Management ; Policies ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders ; community-based institutions
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 65-73
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  • 11
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4942 | 424 | 2011-09-29 15:41:17 | 4942 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This paper analyses the location, potentialities and set-backs of Nkombe Beach, the landing site chosen in Uganda for the 4-beaches survey.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/17
    Keywords: Fisheries ; Management ; Africa ; Uganda ; Nkombe Beach ; Lake Victoria ; co-management ; fisheries stakeholders
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 49-53
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  • 12
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4937 | 424 | 2011-09-29 15:41:59 | 4937 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: 1) The 4-beaches survey was the first of its kind on Lake Victoria. Drawing on Participatory Rural Appraisal (PRA) techniques, four landing sites around the lake were selected for long-term monitoring from March 2000 through to October 2001.2)Held in all the 3 riparian countries of Lake Victoria the stakeholders' workshops aimed to assess the necessity of fisheries management for Lake Victoria and to identify who the stakeholders in fisheries management would be.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/17
    Keywords: Fisheries ; Management ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 1-18
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  • 13
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4943 | 424 | 2011-09-29 15:41:09 | 4943 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Two landing sites were chosen in Tanzania for the 4-beaches survey. The former, Ihale, is a large one with an avarage of 120 boats and direct connections to the fish processing factories. The latter, Mwasonge, is one of the smallest landing sites in the Mwanza region with totally different characteristics. This book section aims to analyse the results from these two sites in the context of the co-management potentialities in Tanzania and more generally on the Lake Victoria region.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/17
    Keywords: Fisheries ; Management ; Africa ; Tanzania ; Ihale ; Mwasonge ; Lake Victoria ; co-management ; fisheries stakeholders
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 54-62
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  • 14
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4936 | 424 | 2011-09-29 15:41:22 | 4936 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: The purpose of this Fisheries Management Plan (FMP) within the Lake Victoria Fisheries Research Project was to sustain the livelihoods of the communities who depend on the fishery resources of the lake and to reduce poverty, food insecurity and unemployment. To achieve this goals, a better management of the resources, which would mobilize and include stakeholders at local, regional, national and international level was believed to be the right strategy for success. (PDF contains 79 pages)
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/01/16; Introductory pages i to viii include table of contents, acronyms and an executive summary
    Keywords: Fisheries ; Management ; Planning ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders ; community-based institutions ; livelihoods
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 1-64
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  • 15
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4949 | 424 | 2011-09-29 15:40:29 | 4949 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: The FIDAWOG workshop held at the Tom Mboya Labour College in Kisumu was the fourth stock assessment workshop held under the LVFRP programme. There were two main objectives: training in paper and report writing and presentation, and presentation of research results collected to date.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Uganda ; Kisumu ; stock assessment ; data collection ; data report
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 1-8
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  • 16
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4952 | 424 | 2011-09-29 15:40:21 | 4952 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Trawl surveys to assess the stocks of Lake Victoria for estimates of biomass and yield, together with the establishment of exploitation patterns, are being undertaken under the Lake victoria Fisheries Research Project. Preliminary surveys to establish the sampling stations and strategy were carried out between October 1997 and February 1998. Three cruises to cover the whole of the Tanzanian waters were undertaken with a total of 133 sampling stations. Data on catch rates, species composition and distribution were collected.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Tanzania ; stock assessment ; data collection ; data report
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 26-45
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  • 17
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4946 | 424 | 2011-09-29 15:40:36 | 4946 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This book section aims to give an overview of the Stakeholders' Workshop taken at Mwanza (Tanzania) to evaluate the role and potentials of local stakeholders, in relation to the co-management of Lake Victoria's fisheries within the frame of the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/17
    Keywords: Fisheries ; Management ; Africa ; Tanzania ; Mwanza ; Lake Victoria ; co-management ; fisheries stakeholders
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 105-119
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  • 18
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4954 | 424 | 2011-09-29 15:39:55 | 4954 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: The number and size composition of gillnets, fishing grounds, and the quantity and composition of fish catches were related to the size of fishing boat. The overall number of gillnets per boat increased from 20.9 + or - 2.3 nets in 5-6 m long boats to 88.6 + or - 11.8 nets in 11-12 m long boats. The proportion of large mesh sizes, + or more than 127 mm, also increased from 40% in 5-6 m long boats to 100% in boats longer than 10 m. Fish catches are related to the size of boat and this should be considered when formulating management guidelines of the lake's fishery. Promotion of large fishing boats 8 m or longer and restriction on the number and/or mesh size of gillnets of smaller boats could increase ecological and socio-economic benefits.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Uganda ; stock assessment ; data collection ; data report ; Lates niloticus ; Oreochromis niloticus
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 63-77
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  • 19
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4951 | 424 | 2011-09-29 15:40:31 | 4951 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: A total of 457 hauls were taken during experimental bottom trawl surveys in the Uganda sector of Lake Victoria between November 1997 and June 1999 to estimate composition, distribution and abundance of the major fish species in waters 4-60 m deep. Fifteen fish groups were caught with Nile perch, Lates niloticus (L.), constituting 94% by weight. Haplochromines and L. niloticus occurred in all areas sampled, while Nile tilapia, Oreochromis niloticus (L.) and other tilapiines were restricted to waters 30 m deep or less. The mean trawl catch rate in the zone where artisanal fishermen operate (i.e. in waters less deep than 30 m was 165 kg hr, of which 93.6% comprised L. niloticus. Species diversity and relative abundance decreased with increasing water depth.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Uganda ; Kisumu ; stock assessment ; data collection ; data report
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 10-25
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  • 20
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4944 | 424 | 2011-09-29 15:41:06 | 4944 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This book section is a review of a workshop, the one held at Jinja in Uganda, which aimed to assess the potential local stakeholders within the frame of the co-management of Lake Victoria's fisheries.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/17
    Keywords: Fisheries ; Management ; Africa ; Uganda ; Jinja ; Lake Victoria ; co-management ; fisheries stakeholders
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 63-79
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  • 21
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4938 | 424 | 2011-09-29 15:42:01 | 4938 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: As it is clearly indicated in the title of this book section, it overviews the methodologies used in the 4-beaches Survey and in the various Stakeholders' Workshops held in all the three riparian countries of the Lake Victoria.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/17
    Keywords: Fisheries ; Management ; Africa ; Lake Victoria ; co-management ; fisheries stakeholders
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 19-38
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  • 22
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4947 | 424 | 2011-09-29 15:40:56 | 4947 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This short paper aims to give an overview of all the conclusions and recommendations related to the 4-beaches Survey and the Stakeholders' Workshops held in all the three Lake Victoria riparian countries within the frame of the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/17
    Keywords: Fisheries ; Management ; Africa ; Kenya ; Obenge ; Bondo ; Uganda ; Nkombe Beach ; Jinja ; Tanzania ; Ihale ; Mwasonge ; Mwanza ; Lake Victoria ; co-management ; fisheries stakeholders
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 120-122
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4955 | 424 | 2013-10-27 12:07:03 | 4955 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Catch and effort assessment surveys have been used to assess trends in fish landings in Kenyan waters of Lake Victoria since 1976. Landings reached a maximum of 200000 t annually in 1989-1991 as Nile perch, Lates niloticus (L.), catches increased due to an expansion in stock size and increased fishing effort. CPUE peaked at 180 kg boat day-1 in 1989 and decreased thereafter with increasing effort. By 1998 total Nile perch catches were half those at the beginning of the decade despite increased effort. Catches of Rastrineobola argentea (Pellegrin) have levelled off despite increased effort.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Kenya ; stock assessment ; data collection ; data report ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 78-91
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4953 | 424 | 2011-09-29 15:40:25 | 4953 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Bottom trawl surveys were conducted in Kenyan waters of Lake Victoria during the period September 1997 and March 1999. The means of fish biomass for the two most important species: Lates niloticus (L.) and Oreochromis niloticus (L.) were estimated at 61.5 kg ha and 4.5 kg ha respectively. There were few L. niloticus greater than 80 cm TL and O. niloticus greater than 50 cm TL, though these species attain maximum sizes of 205 cm and 65 cm respectively. Oreochromis niloticus was mostly found shallower than 5 m though some specimens were encountered deeper than 10 m, suggesting that the species has extended its ecological range. Very low catches were obtained from areas under water hyacinth cover. Water in such areas was turbid with oxygen levels below the critical 3.0 mg L.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Kenya ; stock assessment ; data collection ; data report ; Lates niloticus ; Oreochromis niloticus
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 46-62
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4945 | 424 | 2011-09-29 15:40:33 | 4945 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This paper is a review of the workshop held at Bondo in Kenya to assess the role of local stakeholders in the of co-management of Lake Victoria's fisheries within the frame of the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/17
    Keywords: Fisheries ; Management ; Africa ; Kenya ; Bondo ; Lake Victoria ; co-management ; fisheries stakeholders
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 80-104
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4957 | 424 | 2011-09-29 15:39:21 | 4957 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Catch trends from Fisheries Department reports from the last eleven years (1985-1995) were analyzed. These showed a shift in the fishery from a cichlid-based system to one dominated by Nile perch and tilapias. In recent years, catches have declined from a peak in the early 1990s. Catch per unit effort appears to have remained stable except for a drop in 1995, however, this is considered dubious because the effort showed a doubling in that year. Limitations of the fisheries data collection system for the Tanzanian sector of Lake Victoria are highlighted and discussed.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Tanzania ; stock assessment ; data collection ; data report
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 99-107
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4956 | 424 | 2011-09-29 15:39:53 | 4956 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Four fleets of hanging coefficients 0.2, 0.4, 0.6 and 0.8 were used to determine size selectivity and selection factors of Nile perch populations. There was a linear relationship between mesh size and modal length of capture. Positively skewed length frequency distributions were found for smaller mesh sizes with entanglement becoming more prominent in mesh sizes above 101 mm. Nets of 114 to 141 mm stretched mesh yielded higher economic returns than small meshes, the catch consisting of few largefish.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Kenya ; stock assessment ; data collection ; data report ; Lates niloticus
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 92-98
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5001 | 424 | 2011-09-29 15:35:04 | 5001 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Caridina nilotica (Roux) (Decapoda: Atyidae) was investigated over a period of four months in three zones of Lake Victoria. Abundances were estimated by vertical net sampling. The importance of C. nilotica in the diet of the three commercial fish species was investigated. Caridina nilotica is a primary food for Lates niloticus (L.), Oreochromis niloticus (L.) and Rastrineobola argentea (Pellegrin). A quantitative study of C. nilotica in the fishing area indicated high biomass which can support the Lake Victoria fisheries.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Lake Victoria ; Caridina nilotica ; data collection ; data report ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 155-162
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5009 | 424 | 2011-03-30 08:13:34 | 5009 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Recent surveys have indicated an increase in haplochromine biomass recorded from the bottom trawl and in the beam trawl. The haplochromines recovering in the offshore waters belong to three species in the zooplanktivorous trophic group: Yssichromis laparogramma (Greenwood and Gee), Yssichromis fusiformis (Greenwood and Gee) and Astatotilapia lacrimosa (Boulenger). In this paper, the species composition and relative abundance of the zooplanktivorous haplochromines recorded from the bottom and frame trawl surveys in the various parts of the Ugandan waters of Lake Victoria are discussed.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Lake Victoria ; Uganda ; zooplanktivorous haplochromines ; data collection
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 199-203
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5008 | 424 | 2011-09-29 15:34:05 | 5008 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: The reproduction of Nile tilapia, Oreochromis niloticus (L.), in the Nyanza Gulf of Lake Victoria was studied from June 1998 to May 1999. Length at maturity ranged from 28-30 cm TL for females and from 32-34 cm TL for males. Males were more abundant in all length classes longer than 36 cm TL. Relative condition factor was above unity, except in August, October and May for males, and October for females. Gonadosomatic index (GSI) was low during the post spawning period (July to October) and high during the protracted breeding period (December-June).
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Lake Victoria ; Oreochromis niloticus ; Nyanza Gulf ; data collection
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 192-198
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5006 | 424 | 2011-09-29 15:34:19 | 5006 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Oreochrimis niloticus (L.) was introduced to Lake victoria in the 1950s. It remained relatively uncommon in catches until 1965, when the numbers began to increase dramatically. It is now the third most important commercial fish species after the Nile perch, Lates niloticus (L.) and Rastrineobola argentea (Pellegrin). Oreochromis niloticus is considered a herbivore, feeding mostly on algae and plant material. The diet now appears to be more diversified , with insects, fish, algae and plant materials all being important food items. Fish smaller than 5 cm TL have a diverse diet but there is a decline in the importance of zooplankton, the preferred food item of small fish, as fish get larger. The shift in diet could be due to changes which have occurred in the lake. Water hyacinth, Eichhornia crassipes (Mart.) Solms, which harbours numerous insects in its root balls, now has extensively coverage over the lake. The native fish species which preyed on these insects (e.g. haplochromines) have largely been eliminated and O. niloticus could be filling niches previously occupied by these cichlids and non cichlid fishes. The change in diet could also be related to food availability and abundance where the fish is feeding on the most readily available food items.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Kenya ; Lake Victoria ; Nile tilapia ; water hyacinth ; data collection
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 175-183
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5000 | 424 | 2011-09-29 15:35:02 | 5000 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: The zooplankton and macrobenthic communities of Lake Victoria were sampled by lift net and Ponar grab, respectively. The zooplankton comprised copepods and cladocerans, rotifers and aquatic insect larvae. Most taxa exhibited wide distribution in the lake, with the exception of rotifers which were rare in deep offshore waters. The main components in the macro-benthos were chaoborid and chironomid larvae and molluscs. Caridina nilotica (Roux) and other groups were rare in the samples. Zooplankton density ranged from 100000 or more to 4 million ind. m2 and increased from the shallow inshore to deep offshore waters. Numerical dominance of cyclopoids and nauplius larvae was a common feature at all stations sampled. Most macrobenthic taxa were also widely distributed, although chaoborid and chironomid larvae were rare in the samples. Rastrineobola argentea (Pellegrin) and larval Lates niloticus (L.) ate mainly cyclopoid copepods, while cichlids showed a strong preference for adult insects. High ecological stability of the cyclopoids, and the zooplankton community in general, despite radical ecosystem changes in recent years, coupled with what appears to be high predation pressure, offers good prospects for the pelagic fishery in the lake.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07; Page 146 was missing from the copy available to us for scanning
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Lake Victoria ; stock assessment ; data collection ; data report ; zooplankton ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 142-154
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5007 | 424 | 2011-09-29 15:34:22 | 5007 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Size at first maturity, breeding periods and condition factor were determined for the small pelagic cyprinid Rastrineobola argentea (Pellegrin) in the Jinja waters of Lake Victoria in 1996-1997. Females showed a reduced size at maturity compared to ten years earlier when exploitation of the species was minimal. The males, however, have changed little. Although the species breeds throughout the year, two breeding peaks were observed during the drier months of August and December-January. Minimal breeding was observed in the rainy months of April-May and October-November. Fish from the open water station at Bugaia showed a higher proportion of breeding individuals than those from inshore areas. The mean monthly condition factor of fish from Napoleon Gulf confirmed breeding peaks obtained from examination of gonad development.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Lake Victoria ; Rastrineobola argentea ; Bugaia ; data collection
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 184-191
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5010 | 424 | 2011-03-25 06:43:37 | 5010 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: In a tagging experiment carried out in the Kenyan waters of Lake Victoria, an annual growth increment of 29 cm yr was obtained for Lates niloticus (L.). Growth parameters obtained using the von Bertalanffy model on the growth curve fitted by eye were L (inf.) = 122 cm yr and k = 0.26 yr. Data for other species tagged were inadequate to obtain meaningful results.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Lake Victoria ; Lates niloticus ; Bagrus docmak ; Oreochromis niloticus ; Clarius gariepinus ; data collection
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 204-207
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5011 | 424 | 2013-10-27 12:07:37 | 5011 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: The Lake Victoria fish fauna was dominated by cichlids before the establishment of the exotic species Oreochromis niloticus (L.) and Latus niloticus (L.). With the alterations in the ecology of Lake Victoria, changes may be expected to occur in the population dynamics of the fish species. In two zones of Lake Victoria, the size structure, distribution and abundance, condition factors, length-weight relationship and sex ratios of O. niloticus were determined. Larger fish were found in zone II than in zone III, where very few larger fish were recorded. More O. niloticus were caught in zone III, especially in Itome Bay, than in zone II but catch by weight was greater in zone II. More males than females were encountered in both zones. Oreochromis niloticus had similar condition factors in both zones.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Uganda ; Lake Victoria ; Oreochromis niloticus ; data collection
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 208-211
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5002 | 424 | 2011-09-29 15:35:06 | 5002 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: The zooplankton community of the littoral zone of Nyanza Gulf, Lake Victoria, was studied between June 1998 and June 1999 to identify and quantify various zooplankton groups, and investigate the interactions that occur between them and the littoral fish through the food chain. Zooplankton samples were collected from five stations using a 83 micro-m mesh size plankton net hauled vertically through the water column. Fish samples were obtained by beach seine, except at Gingra (May 1999), where trawl samples were used. Gut/stomach analysis was carried out on the three major commercial species, Lates niloticus (L.), Oreochromis niloticus (L.) and Rastrineobola argentea (Pellegrin).
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/99/07
    Keywords: Biology ; Fisheries ; Information Management ; Africa ; Lake Victoria ; Kenya ; Nyanza Gulf ; zooplankton ; data collection ; data report ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 163-174
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5018 | 424 | 2011-09-29 15:33:09 | 5018 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: This document contains the findings of the second Participatory Rural Appraisal (PRA) carried out under the LVFRP. Its principal objectives were to develop base-line information on a Ugandan beach for the 3-beaches survey of the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/09
    Keywords: Fisheries ; Management ; Sociology ; Africa ; Uganda ; Lwalalo Beach ; Lake Victoria ; Co-management ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 36-70
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5016 | 424 | 2011-09-29 15:33:16 | 5016 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: As stated in the title, this is an introduction to all the reports contained in this technical document and related to the various workshops on Participatory Rural Appraisal (PRA) held in all the riparian countries around Lake Victoria within the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/09; The title of this document reads erroneously "Introduction to LVFRP Technical Document 10". It is in fact in document 9 and obviously relates to all the reports contained in it.
    Keywords: Fisheries ; Management ; Sociology ; Africa ; Lake Victoria ; Co-management ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 1-4
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5020 | 424 | 2011-09-29 15:32:34 | 5020 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-08
    Description: This document contains the findings of the fourth Participatory Rural Appraisal (PRA) carried out under the LVFRP. Its principal objectives were to develop base-line information on a Ugandan beach for the 3-beaches survey of the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/09
    Keywords: Fisheries ; Management ; Sociology ; Africa ; Uganda ; Nkombe Beach ; Lake Victoria ; Co-management ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 120-146
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5017 | 424 | 2011-09-29 15:33:13 | 5017 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-07
    Description: Ihale is a large landing site lying approximately 65 km. from Mwanza along the main Mwanza-Musoma highway. Ihale Beach was selected as a potential candidate for the 3-beaches study because of its proximity to Mwanza, and hence suitability for frequent monitoring; and because it is served by a road accessible during the rainy seasons. As with the first training Participatory Rural Appraisal (PRA) on Kiumba Beach on Kenya's Rusinga Island, the objectives with this PRA were as follows: (a) To identify and understand Ihale's community-based organizations and institutions which have a role in the lake's fishery. (b) To consider the key issues which arise from this study for the involvement of communities and community-based organizations and/or institutions such as those at Ihale Beach, in the co-management of Lake Victoria's fishery.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/09
    Keywords: Fisheries ; Management ; Sociology ; Africa ; Tanzania ; Ihale Beach ; Lake Victoria ; Co-management ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 5-35
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5021 | 424 | 2011-09-29 15:32:37 | 5021 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-08
    Description: This paper comprises part of the so-called "3-beaches Survey" of the LVFRP. In Tanzania, this study has developed to examine two landing sites (Mwasonge and Ihale), and to chart the progress of the newly established Beach Management Units (BMU) at each beach, comparing one BMU against the other. The over-arching objective of this survey was to develop an understanding of the context in which Mwasonge's fishery exists. The study does so by examining the community's history, culture and beliefs, various other socio-cultural factors, their resources, society and economy, wealth and the community's perceptions of wealth. Importantly, the survey examines the community's institutions and its perceptions of fishing rules and changes within the fishery. All of these facets of community life are examined with the use of participatory Rural Appraisal tools, and the images that the study generated are reproduced herein.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/09; This article includes a 3-pages appendix which is a glossary of English towards local languages of the Lake Victoria area related to fish and fisheries.
    Keywords: Fisheries ; Management ; Sociology ; Africa ; Tanzania ; Mwasonge Beach ; Lake Victoria ; Co-management ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 147-185
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/5019 | 424 | 2011-09-29 15:32:04 | 5019 | Lake Victoria Fisheries Organization
    Publication Date: 2021-07-08
    Description: This document contains the findings of the third Participatory Rural Appraisal (PRA) carried out on Obenge Beach in Kenya, from the 23rd to the 26th of June 2000, under the LVFRP. Its principal objectives were to develop base-line information on a Kenyan beach for the 3-beaches survey of the LVFRP.
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/00/09
    Keywords: Fisheries ; Management ; Sociology ; Africa ; Kenya ; Obenge Beach ; Lake Victoria ; Co-management ; artisanal fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 71-119
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4150 | 424 | 2011-09-29 16:25:28 | 4150 | Lake Victoria Fisheries Organization
    Publication Date: 2021-06-30
    Description: This document can be considered as the first step in the direction of a complete fish species catalogue for fisheries purposes of the Lake Victoria. (PDF contains 55 pages)
    Description: Republic of Kenya
    Description: Republic of Uganda
    Description: United Republic of Tanzania
    Description: European Development Fund (7 ACP-RPR-372)
    Description: Lake Victoria Fisheries Research Project Phase II
    Keywords: Biology ; Fisheries ; Africa ; Lake Victoria ; commercial species ; freshwater fish ; lake fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 1-39
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    Lake Victoria Fisheries Research Project | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/4151 | 424 | 2011-09-29 16:25:30 | 4151 | Lake Victoria Fisheries Organization
    Publication Date: 2021-06-30
    Description: The notes for guidance on preparation of research, research dissertations and scientific papers are meant to assist researchers on how to achieve a successful presentation, writing a technical report or research paper. This comprises some simple rules that have helped many inexperienced writers to get started, and have also helped more experienced writers to get out of a hopeless tangle of observations and inferences. (PDF contains 65 pages)
    Description: Lake Victoria Fisheries Research Project Phase II
    Description: LVFRP/TECH/01/13; The document includes 5 appendixes on editing and proof-reading.
    Keywords: Fisheries ; Information Management ; Africa ; Lake Victoria ; abstracts ; aquatic sciences ; bibliographic information ; documents ; manuals ; research ; research programmes ; training aids
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 1-45
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    East African Inland Fisheries Research Organization | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16945 | 4230 | 2015-06-12 14:11:37 | 16945 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-09
    Description: The present work is now concentrated mainly on the Tilapia fishery. As a result of past experience it is easier to direct efforts in a way likely to give useful results. Work on the Tilapia is now beyond the purely exploratory stage and these fishing experiments are being carried but in areas which are known to contain large numbers of Tilapia. Nets of different mesh size are being used in order to catch all stages of these fish. These nets are being fished at the surface and at the bottom, close to the shore and further out. The data collected should provide more precise information regarding the periodic migration, both vertical and horizontal, of these fish, a better understanding of their life history and breeding habits, and indicate' the potential possibilities of this fishery. These data should explain the variation in numbers of fish caught by Africans during different months of the year; they should also make it possible to determine more exactly the best type of net for use in this particular fishery.
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 13
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    East African Freshwater Fisheries Research Organization, EAFFRO | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17043 | 4230 | 2020-09-22 02:44:48 | 17043 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: This survey of the fisheries of Lake Rukwa, Tanganyika, describes results obtained during 1963-1964, and includes comparative material given by previous workers, in particular surveys conducted in 1936 by Ricardo and, in 1946 by Swynnerton. Data is given on the general hydrology of the Lake including chemical analyses, seasonal and annual fluctuations of volume. Cyclical variations of lake level occur every 20/30 years and the level now reaching a new maximum is expected to fall again during the next decade. The record of fish species from the Rukwa basin is enlarged by 3 genera: Polypterus, Protopterus and Chiloglanis; a summary of the biology and commercial exploitation of 20 species of fish is given. An historical account of the fish production from the lake and its subsequent marketing concludes that in 1963/64 some 5,328 tons of dried fish products are marketed annually; between 10-6;10 of this trade is directed towards the Rhodesias and the remainder is absorbed within Tanganyika. The state of the indigenous fishing enterprise is discussed, and for the improvement of the industry recommendations are given that the marketing of fish products should be immediately investigated and encouraged both abroad and within, Tanganyika. Further suggestions include the improvement of water-transport on the lake, the development of improved fishing-craft, fishing-methods, processing methods and further investigation of the biology of the fish-fauna.
    Keywords: Fisheries ; Limnology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 62
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    East African Freshwater Fisheries Research Organization | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17057 | 4230 | 2020-08-29 20:37:24 | 17057 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: In a previous report (Gee and Gilbert 1968) an attempt was made toestimate stock densities in the Entebbe area ,of Lake Victoria based oncatch figures obtained in EAFFRO No.1 trawl fitted with a 1" codendand towed at an estimated1.7.knots (probably an underestimate). Theresults were rather discouraging in that the figures obtained for stockdensities were definitely very low. It was felt that the major weaknessof the operations was the trawl net but as it was the only net availableand neither of the authors were expert on the design and constructionof more suitable nets, this particular net had to be used.
    Description: Top of title page: EAFFRO Occasional Paper, 11
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 28
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17099 | 4230 | 2015-06-10 06:58:07 | 17099 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: Fisheries continue to be important in the national economy, especially as anexport commodity. Fish exports increased from 15,876 tonnes valued at 34.4million US$ in 2000 to 28,153 tonnes valued at 79.0 million US$ in 2001.Consequently information for sustainable exploitation and management of fishstocks is a priority. In order to fulfill this requirement, FIRRI has beenimplementing two research projects. The first project focuses on sustaining andincreasing capture fisheries production through management of fish stocks,biodiversity and environment of aquatic systems. The second project focuses onincreasing fish production through improved fry production and pondmanagement and feeding of cultured species.
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17103 | 4230 | 2015-06-10 07:13:48 | 17103 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: About 18% of Uganda’s surface area is covered with water from which about300,000 metric tonnes of fish are produced. Fish are currently the second mostimportant export commodity generating approximately US$100 million annually. Fish provides 50% of protein diet for the 20 million people translating into per capita consumption of 12 kg. Close to the production system, this figure rises to 50 – 100 kg. It is estimated that fishery-related activities employ at least one million people countrywide (i.e. 5% of the population).Fish exports to regional markets are worth at least US $ 20 million annually. Fishflesh contains an anticholesterol which assists in reducing heart diseases. Somefishes are of medicinal value e.g. haplochromines (Nkejje) are used to treat measles. Most of the fish in Uganda is got from lakes Victoria, Kyoga, Albert and Albert Nile, Edward and George production systems as well as from the 160 minor lakes and rivers and the associated wetland systems. Capture fisheries based in these systems contribute up to 99% of the fish production in Uganda but aquaculture is also picking up. The fishing industry employs up to one million Ugandans
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17184 | 4230 | 2015-06-13 18:17:59 | 17184 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: The purpose of this output was to use the results of the baseline and participatory diagnostics analysis to develop alternative innovations for agricultural production, natural resource management and food security.The farming systems in the project areas were analysed to identify the innovations that communities had been using for agricultural production, natural resource management and food security. The innovative strategies were examined for their contribution to sustainable agriculture, food security and natural resource management. Comparative analysis of the agricultural productivity, food security and natural resource management in the different areas where the innovations have been put in place was undertaken.The best practices would be identified, which should be scaled-up, modified orsustained. The willingness and perceptions of the farmers to adopt the innovations would then be assessed.
    Description: First Technical Progress Report, January – December 2010
    Keywords: Agriculture ; Fisheries ; Health
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    East African Fisheries Research Organisation | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17212 | 4230 | 2020-10-20 03:45:44 | 17212 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: Two species of the genus Tilapia occur naturally in Lake Victoria. Of these the most abundant and therefore the most important economically, is T. esculenta GRAHAM, and it is, for these reasons that more information is available concerning this species than the related T. variabilis BOULENGER. Thus LOWE (MCCONNELL) (1956) who was the first to make a serious study of the Tilapia species of the lake since the pioneering survey of GRAHAM (1929), dealt in considerable detail with T. esculenta but treated T. variabilis much less fully. Later studies (GARROD 1959) have also been concentrated on T. esculenta. Because of a relaxation in certain areas' of net-size regulations (discussed below) T. variabilis has recently assumed greater economic importance than was the case when restrictions were imposed, and this had called for further study of its general biology and the possible effects of commercial exploitation. The following account represents a preliminary contribution to the information required, and deals almost entirely with observations made in the northern waters of the lake and particularly in the vicinity of Jinja (Uganda).
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17234 | 4230 | 2016-02-23 09:02:05 | 17234 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The annual report presents present activities and achievements for the reporting year 2011/2012. The Objectives of NaFIRRI are highlighted below:a) Generation of knowledge and technologies of strategic importance for the management, development and conservation of fisheries resources and water quality.b) Establishment and management of the human, physical and financial resources of the National Fisheries Resources Research Institute.c) Provision of technical backstopping and capacity building to the Ministry of Agriculture, Animal Industry and Fisheries (MAAIF), Zonal Agricultural Research and Development Institutes (ZARDIs) and other agencies dealing in fisheries research and water quality.d) Development and management of fisheries research information and ensuring collaboration with stakeholders.e) Planning, monitoring and evaluation of all fisheries research programmes undertaken by the institute to ensure conformity with national research strategy.f) Ensuring the quality of knowledge and technologies developed, multiplied and disseminated through uptake pathways.g) Generation of periodic reports on fisheries and water quality research programmes to National Agricultural Research Council (NARC) and other stakeholders.h) Establishment of sustainable linkages and partnerships with local, regional and international research bodies.
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17220 | 4230 | 2021-02-27 20:52:02 | 17220 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The study is prompted by the poverty that persisted among the fishing communities of lake victoria at time of considerable cash inflow into the fisheries development of fish processing industry. There has been need for understanding of the poverty and what strategies would be most appreciate for it's reduction.This study has attempted to respond to the needby identifying the nature and distribution of the poverty within the fisheries lake victoria,Uganda, the factor responsible for itand the options for poverty reduction intervention. The study examined the global and regional perspectives of poverty and wealth distribution, noting that wide disparities existed between the developed and the developing world and also between the developing countries themselves. A historical review of development policies and strategies revealed that while successive strategies were able to contribute to growth, their achievement towards poverty alleviation were less than satisfactory, hence the need forcontinually developing new strategies.A background to Uganda’s society and economy is provided, examining the demographic, political, environmental and economic conditions of the country. Uganda’s developmentstrategies are reviewed, highlighting the role of the Poverty Eradication Action Plan, Uganda’s main strategy for implementing the policy of poverty reduction and wealthdistribution. At the agricultural sector level, the Plan for the Modernisation of Agriculture has been formulated, followed by the National Fisheries Policy, aimed at providing a policy framework for the management and development of the fisheries.An appropriate definition of poverty was formulated, considered relevant to the situation ofLake Victoria. The dimensions of poverty included inadequate basic necessities, low education and health achievements, a sense of insecurity and exposure to risk. The research methodology was enhanced by the examination of the Lélé Model of the Poverty–Environmental Degradation problem, the World Bank Model of Poverty Causation and thesubsequent Lake Victoria Model developed in this study. It has provided a plan for the research, the consideration of criteria and a data collection plan. The data collectioninstruments included secondary data search, key informant interviews and a sample survey based on a structured questionnaire.The study identified all the four dimensions of poverty in the fisheries, provided poverty profiles with respect to the different activities, groups of people and regions in the fisheries, based on consumption poverty. Among the people identified to be in poverty were the fishing labourers, fishers of Oreochromis niloticus and those operating with non-powered boats. In the post-harvest fisheries, large proportions of processors involved in salting and sun-drying, market stall and bicycle traders were in the poverty category. The ethnic groups most affected included the Samia, Basoga and Bakenye while the Districts of Jinja, Bugiri and Busia had the highest proportions of fishers in the poverty category. With respect to the other dimensions of poverty, the study showed that educational achievement was low within the fishing communities. The health status was poor, due mainly to the prevalence of malaria, diarrhoea, bilharzia and HIV/AIDS. There was a sense of insecurity within certain sections of the fishing community, due to leadership weaknesses within the local as well as the Government institutions. Some community members operated in a state of risk because they were vulnerable to episodes of income, health and education. The causes of poverty in fisheries included weaknesses within the institutional and social environment, limitations in the technology available to the poor, resource degradation and unfavourable economic factors. The recommendations of the study for poverty reduction included strengthening of policies, developing links, improving capacities and increasing resources, to be applied at the levels of Central Government, Local Government and of the community. In view of the achievements of the methodology used on this study, involving reference to the models, it is recommended that future research should build upon this model approach, as it will continue to produce results, especially when attempting to forecast changes relating to interventions.
    Description: Lake Victoria Environmental Management Project (LVEMP)
    Keywords: Fisheries ; Sociology
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17235 | 4230 | 2016-02-19 09:42:44 | 17235 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The Mandate of the National Fisheries Resources Research institute (NaFIRRI) is to manage, promote and undertake applied and basic research of strategic and national importance in aquaculture, capture fisheries, water environment, socio-economics and marketing, information communication management and any emerging issues in the fisheries
    Keywords: Fisheries
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    Fisheries Resources Research Institute (FIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17283 | 4230 | 2020-09-07 16:05:44 | 17283 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: Fish is currently one of the two most important agricultural export commodities from Uganda with factory-processed fish exported mainly to Europe, South East Asia and the Middle East worth at least USD 100 m annually. Regional exports are probably of similar significance. All recorded fish exports rely heavily (95%) on factory-processed Nile perch with the Nile tilapia increasingly entering the export market chain. Regional fish exports are more diversified in terms of species and include Nile tilapia, Nile perch, "mukene", Tiger fish and "Angara", the last two fished from Lake Albert. Regional fish destinations include Kenya, Tanzania, Rwanda, Sudan, DR Congo and some parts of Central Africa. Internal consumption relies on subsistence to semi-commercial fishes for a variety and species dominated by Nile tilapia
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17284 | 4230 | 2016-03-04 08:58:43 | 17284 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The field survey was undertaken by NaFIRRI technical staff. The terms of reference for the survey were to make an assessment of the lake for possible cage fish farming. The survey was undertaken on the 26 August 2010 by a team composed of the several. The lake supports small subsistence fishing activities by the local communities livingaround it. Information from the local community indicates that the fish species/typesoccurring in the lake include the Ngege, Nile perch, the African catfish and the lung fish.The fishing crafts in operation are largely Dug-out and Bao Tatu canoes and the main fishing gears are nylon and monofilament gillnets, hooks and beach seines.
    Keywords: Fisheries
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17286 | 4230 | 2021-02-13 22:46:04 | 17286 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The status of fish stocks in a water body at any one time is a function of several factors affecting the quantity of fish in that water body. These include:a) Total number (abundance) and biomass (weight) present,b) Growth (size and age),c) Recruitment (the quantity offish entering the fishery) including reproduction,d) Mortality which is caused by fishing or natural causes.Other indirect factors of major importance to the status of the stocks include productionfactors (water quality and availability of natural food for fish), the life history parameters ofthe different species making up the stocks (e.g. sex ratios, condition of the fish, reproductivepotential (i.e. fecundity) etc). Changes in fish stocks do occur when any of the above listedfactors directly influence aspects of growth, reproduction and mortality and therefore,numbers and standing stock (biomass).
    Description: Sensitisation Workshop on Statns of Fish Stocks of Lake Victoria 29th July 2004, Colline Hotel, Mukono
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16650 | 4230 | 2015-04-10 17:42:29 | 16650 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-07
    Description: This report presents findings of the CAS conducted in the Ugandan waters of Lake Victoria in May 2011. The results of the previous eleven CASs conducted under the IFMP of the LVFO programme in July, August, September and November 2005; in March, August and December 2006; in March and August 2007; in February and December 2008; and March 2010 are included to show the emerging trends. The report also presents annual catch estimates for the Ugandan part of the lake from 2005 to 2011.Through these CASs, information is building up to show the emerging picture of fish production in the Ugandan waters of the lake. Similar surveys are conducted in the Kenyan and Tanzanian parts of the lake, which provide the lake wide perspective of fisheries production but this time not simultaneously as under the LVFO effort due to different sources and timing of funding. These data can now be utilised together with other Resource and Socio-economic Monitoring survey data for a stock assessment of the lake to provide a firm basis for planning and management of the fisheries resources.
    Description: World Bank
    Description: Agricultural Technology Agribusiness and Advisory Services (ATAAS)
    Description: Catch Assessment Survey jointly conducted by the National Fisheries Resources Research Institute (NaFIRRI), the Department of Fisheries Resources (DFR), and the districts of Busia, Namayingo, Mayuge, Jinja, Mukono, Buikwe, Buvuma, Wakiso, Kampala, Mpigi, Masaka, Kalangala and Rakai.
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16648 | 4230 | 2015-04-10 18:12:42 | 16648 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-07
    Description: Lake Albert and Albert Nile are a major source of fisheries resources sustaining the riparian communities in Uganda and the Democratic Republic of Congo (DRC). Like all shared bodies of Uganda Lake Albert and Albert Nile fisheries are faced with immense exploitation pressure one time described as the tragedy of the commons. In Uganda, the lake is shared by five riparian districts namely: Buliisa, Bundibugyo, Hoima, Kibaale and Nebbi. The lake covers a total estimated surface area of 5,270 square kilometers with approximately 60% within Ugandan waters. It is located in the western part of the great rift-valley at an altitude of 618 m above Sea level. The central parts of the lake are characterized by steep escarpments whereas the northern and southern parts lie in a plain of the rift valley. The plains are gently sloping, resulting in shallow swampy inshore waters in many places. The major inflowing rivers are the Semliki and Kafu in the south, and the Victoria Nile at the northern tip. The lake has a diverse fish fauna with a gradient of multi-species fisheries in different parts of the lake.The overall objective of the Frame Survey was to provide information on the facilities and services at landing sites and the composition, magnitude and distribution of fishing effort to guide development and management of the fisheries resources of Lake Albert and Albert Nile.The specific objectives were to provide information on:a) The number of fish landing sites;b) The facilities available at the fish landing sites to service the sector including accessibility;c) The service providers especially fisheries staff at fish landing sites;d) The number of fishers;e) The number and types of fishing crafts and their mode of propulsion;f) The number, types and sizes of fishing gears used on the lake and their mode of operation.
    Description: National Environmental Management Authority (NEMA)
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16649 | 4230 | 2015-04-24 14:01:27 | 16649 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-07
    Description: A Catch Assessment Surveys (CAS) with the overall objective of generating information on the fish production and commercial value of the fisheries of Lake Albert and Albert Nile system was implemented by the National Fisheries Resources Research Institute (NAFIRRI) in collaboration with the Department of Fisheries Resources (DFR), Local Government staff (FOs) and BMU members at selected landing sites on Lake Albert (12 landing sites) and Albert Nile (26 landing sites) in July 2012.A total 622 and 313 boat days on Lake Albert and Albert Nile respectively were sampled for a period of 9 days. Results indicate an annual landing of 151,600 and 5,900 tonnes (t) of fish with an estimated beach value of 122.5 and 14 Billion (UShs) from Lake Albert and Albert Nile respectively. Over 80% of the catch from Lake Albert comprised the small pelagic species; Neobola bredoi (Muziri) and Brycinus nurse (Ragoogi) followed by Nile perch (6%). However, due to low market value of the small fishes and the high prices attached to Nile perch for industrial processing and export market, the contribution of the latter to beach value rose to 34% of the total. The contribution of the light fishery based on small pelagic species (B. nurse and N. bredoi) are insignificant on Albert Nile. Even if the small pelagic species may be present in the river system, a light fishery based on these two is yet to be developed. Proportionally, Albert Nile still remain a multispecies fishery with over 20 fish species harvested commercially. Interestingly, the Albert Nile fishery still remains primitive with simple crafts and gears (mainly dugout canoes, traps, and gillnets). This could suggest that the more developed the system becomes the higher the level of transformation in its fisheries leading to simplification, characterized by reduction in multispecies nature and dominance of few species.Illegal gears especially undersized gillnet of mesh size less than 4 inches were the most dominant in the Lake Albert and Albert Nile fisheries. They captured large quantities of immature fish particularly when used to target Nile perch, Bagrus, Nile tilapia, and large Barbus spp. Their impact when used to target the smaller species (Ragoogi, Angara & Ngasia) is yet to be evaluated. A specific study to analyze selectivity and impacts of these nets is a recommended. However, the dominance of 1.5” mesh sizes especially on Albert Nile to target Angara, Ngassia and Barbus, is definitely destructive to their fisheries and should be checked forthwith. In addition, there is an emerging fishing method locally referred to as “Salsio or Luzira” whereby fishers stay on the lake from 3 days up to 2 weeks without returning to the landing site. They carry with them food and salt for processing the catches on the lake, and in the case of Albert Nile on make shift shelters on islands and in the game park. They normally use gillnets of 3-3½ inch mesh size and caught mainly Nile perch & Bagrus (Pethi & Munama). On return they land several tons of fish. Most of these Catches are not captured in the estimates presented in our analyses since we target daily fishing boats. The possible impacts of this fishing method should be studied and appropriate action recommended.
    Description: ATAAS Project 5: Monitoring changes in stocks of the major commercial fish species in the five major water bodies of Uganda (Victoria, Albert, Kyoga, Edward and George)
    Keywords: Fisheries
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    East African Community | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16732 | 4230 | 2015-06-04 17:34:51 | 16732 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-08
    Description: Throughout the year the Fisheries Departments of Tanzania and Uganda continued to forward to EAFFRO data on the commercial fisheries of the lake. Regular records of commercial fishing activity In Kenya waters have not been received, appropriate information has been made available on request from the Chief Fisheries Officer. None of the research staff at EAFFRO have been assigned to a detailed survey of the statistica1 data available, although severa1 research officers have taken the opportunity of analysing the data appropriate to their own research programmes. As recorded in the last Annual Report, an important feature of the UNDP Lake Victoria Fisheries Research Project will be to undertake the relevant statistical surveys essential to the proper.
    Keywords: Fisheries
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    East African Inland Fisheries Research Organization | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16737 | 4230 | 2015-06-10 06:25:41 | 16737 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-08
    Description: IntroductionThe laboratory at Jinja is being developed as a centre forhydro-biological research in East Africa, It has been built and is at present wholly financed from a grant from the Central Research allocation of the Colonial Development Fund. The building contains six laboratories in addition to a library, common room and general office. A maximumnumber of ten research workers could be given laboratory accommodation. However, shortage of living accommodation will limit the numbers who can work here for the next year or two.
    Description: Library stamp on first page has: EAFFRO Occasional Paper, 3.
    Keywords: Fisheries
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    East African Freshwater Fisheries Research Organization | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16739 | 4230 | 2016-02-13 08:57:30 | 16739 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-08
    Description: The methods of estimating codend selectivity for alternatehauls are briefly described and applied to Bagrus docmac (forskahl) data from Lake Victoria. Certain inconsistencies are noted and it is postulated that they may be due to differential escapement of larger Bagrus docmacthrough the trawl meshes when the different codends were fitted. The calculated 50% selection lengths yielded a fair regression on measured weigh give a fork length selection factor of 2.33, consistent with data from the smallest codend mesh size used. The implications of the findings are briefly discussed in relation to the proposed Haplochromis trawl fishery 1971.
    Description: Top of title page: EAFFRO Occasional Paper, 13
    Keywords: Fisheries
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    East African Freshwater Fisheries Research Organization (EAFFRO) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16746 | 4230 | 2016-03-05 10:23:15 | 16746 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-08
    Description: Besides the formal publications held in the library (books, annual reports. Journals and reprints) a considerable quantity of unpublished Information on subjects relevant to freshwater fisheries in East Africa is held on various departmental files, etc.in Jinja. This material is extremely valuable: firstly because it is usually of immediate reference to current research work at EAFFRO, and secondly because it usually exists only as original material: no other copies are available elsewhere.
    Description: Top of title page: EAFFRO Occasional Paper, 12
    Keywords: Fisheries ; Information Management ; EAFFRO
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17096 | 4230 | 2015-06-12 14:53:21 | 17096 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: About 20% of Uganda territory is surface water from which 250,000m tons of fishis produced. In addition to fish exports which earned the country US$ 40m in1996, fish provides 50% of protein diet of the 20m people translating into a percapita consumption of 12kg. It is estimated that fishery related activities employat least one million people.The goal of FIRRI is to generate and transfer improved technologies and policy recommendations aimed at ensuring sustainable fish production and a healthy environment in which fish is produced.
    Keywords: Fisheries
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17100 | 4230 | 2015-06-10 07:07:49 | 17100 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: One of the avenues through which the Government objective of povertyeradication in Uganda can be achieved is Fisheries development andmanagement. Up to 20% of Uganda’s surface area is covered by aquaticsystems i.e. lakes, rivers, streams and swamps and to a large extent, all theseare interconnected. The large lakes: Victoria, Albert, Kyoga, George and Edwardare sites of the more important commercial fisheries, but even the smaller waterbodies, rivers (e.g. the Rivers Nile and Kagera) and the surrounding swampsprovide sources of livelihood to rural areas.Fish is an important source of high quality food, employment revenue and iscurrently the second most important export commodity next to coffee generatingapproximately US $ 80 million annually. Fish exports to regional markets areworth at least US $ 20 million annually. Fish flesh is rich in proteins, which aresuperior to those of beef and poultry. Fish flesh contains an anticholesterolwhich assists in reducing heart diseases. Some fishes are of medicinal valuee.g. haplochromines (Nkejje) are used to treat measles. Most of the fish inUganda is got from lakes Victoria, Kyoga, Albert and Albert Nile, Edward andGeorge production systems as well as from the 160 minor lakes and rivers andthe associated wetland systems. Capture fisheries based in these systemscontribute up to 99% of the fish production in Uganda but aquaculture is alsopicking up. The fishing industry employs up to one million Ugandans
    Keywords: Fisheries
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17101 | 4230 | 2015-06-10 07:10:31 | 17101 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: About 18% of Uganda’s surface area is covered with water from which300,000 metric tonnes of fish are produced. Fish are currently the secondmost important export commodity generating approximately US$100 million.Fish provides 50% of protein diet for the 20 million people translating into percapita consumption of 12 kg. Close to the production system, this figure risesto 50 – 100 kg. It is estimated that fishery-related activities employ at leastone million people countrywide (i.e. 5% of the population).Fish is an important source of high quality food, employment, and revenueand it is currently the second most important export commodity next to coffeegenerating approximately US $ 80 million annually. Fish exports to regionalmarkets are worth at least US $ 20 million annually. Fish flesh is rich inproteins, which are superior to those of beef and poultry. Fish flesh containsan anticholesterol which assists in reducing heart diseases. Some fishes areof medicinal value e.g. haplochromines (Nkejje) are used to treat measles.Most of the fish in Uganda is got from lakes Victoria, Kyoga, Albert and AlbertNile, Edward and George production systems as well as from the 160 minorlakes and rivers and the associated wetland systems. Capture fisheries basedin these systems contribute up to 99% of the fish production in Uganda butaquaculture is also picking up. The fishing industry employs up to one millionUgandans.
    Keywords: Fisheries
    Repository Name: AquaDocs
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17025 | 4230 | 2016-02-19 09:19:59 | 17025 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: The fisheries of Lakes Mutanda and Mulehe during 1998/9 were mainly at subsistence scale and only few fishers operated at irregular intervals. The commercial catch records between 1963 to 1999 showed that Lake Mulehe was landing more fish than Lake Mutanda despite the fact that Lake Mutanda (26.4 km2) was bigger than Lake Mulehe (4.11 cm2). The constant decline of catches was due to irregular restocking and applying low stocking densities of fry. However, restocking should consider using species that withstand low temperature (15-240C) in the district. These include Oreochromis niloticus (Nile tilapia), Macropterus salmoides (Black bass), and Cyprinus carpio (Common carp). Most of these species have either disappeared or declined to very low levels. Due to lack of commercial fish species for harvest, the fishers by 1998/9 resorted to harvesting the haplochromines, Clarias carsoni and edible frogs (Xenopus kigesiensis) as alternative resources. Experimental studies have shown the need and techniques to enhance fish production on these two lakes.
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17147 | 4230 | 2016-02-27 15:59:45 | 17147 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: The survey covered by this report was undertaken between 6 th and 9th October 2009 as a follow-up on the during construction surveys of the Bujagali Hydropwer Project (BHPP). In addition to two pre-construction baseline surveys in April 2000 and April 2006, four monitoring surveys have so far been undertaken i.e. in September 2007, April 2008, April 2009 and the present one, in October 2009. The 2009 biannual monitoring surveys were conducted at an upstream and a downstream transect of the BHPP with emphasis on the following aspects: 1. water quality determinants 2. biology and ecology of fishes and food webs 3. fish stock and fish catch including economic aspects of catch and 4. sanitation/vector studies (bilharzias and river blindness)
    Description: Monitoring carried out by NaFIRRI nn behalf of Bujagali Energy Limited (BEL)
    Keywords: Ecology ; Fisheries
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    Fisheries Resources Research Institute (FIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17185 | 4230 | 2016-03-04 10:42:25 | 17185 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: Lake victoria is the second largest lake in the world.the lake is shatred between three East African countries (Kenya,Uganda and Tanzania) the lake basin is estimatedto have about 30 million people who depend on it as a source of fish for food,employment,income and recreation.the lake is transport locally and regionally is used for recreation and is recongnised internationally for its high fish species diversity of ecological and scientific value.This document in the first in a series to be produced on different fish production systems in Uganda and should stimulate discussions and comments to guide application of scientific findings into the policy environment.
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17187 | 4230 | 2016-02-26 17:11:45 | 17187 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: The result reported were from a monitoring survey no.8 undertaken between 6th and 10th April 2011 during construction period of the Bujagali Hydropwer Project (BHPP). Two pre-construction, baseline surveys in April 2000 and April 2006 were conducted and so far,durin construction phase of the project, seven monitoring surveys have been undertaken i.e. in September 2007, April 2008, April 2009,October 2009, April 2010, September 2010 and the present one, in April 2011. Since 2009 biannual monitoring surveys have been conducted at an upstream and a downstream transect of the BHPP with emphasis on the following aspects: Water quality determinants Biology and ecology of fishes and food webs Fish stock and fish catch including economic aspects of catch and Sanitation/vector studies (bilharzias and river blindness)
    Keywords: Ecology ; Fisheries
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    Lake Victoria Fisheries Organization (LVFO) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17191 | 4230 | 2020-10-17 15:27:46 | 17191 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: A lake wide acoustic survey with the objectives of obtaining estimates the biomass and spatial and temporal distribution patterns of the major commercial fish spices was conducted in Lake Victoria from 17th Feb - 17th March 2007 using SIMRAD EY500 Scientific echo-sounder connected to a 90 beam width split beam transducer operating at 120khz. In additional environment assessment was concurrently conducted with the survey using a sea Bird CTD and a Secchi disk to help explaining observed fish biomass level and the spatial and temporal distribution patterns.
    Keywords: Fisheries
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    Lake Victoria Fisheries Organization (LVFO) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17198 | 4230 | 2020-10-17 15:35:47 | 17198 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: This report provides summaries of the major findings from lake-wide acoustic survey conducted on Lake Victoria (18th Feb-17th March 2008). The survey followed another one conducted in August 2007 using a recently acquired SIMRAD EK 60 dual frequency echosounder.The dual frequency echo sounders comprises 70 and 120 KHZ General Purpose Transceivers GPTs connected to 7 split beam transducers operating at the respected frequencies. The two transceivers were separately calibrate using the specific spheres supplied together with the system from SIMRAD. All the calibrations were within specifications of the manufacturer.
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17202 | 4230 | 2016-02-19 09:21:41 | 17202 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: Tullow Oil plc is to launch an onshore Early Production System (EPS) of oil drilling rated at 4,000 barrels of oil per day by 2009. The location of the EPS is in the Kaiso-Tonya area of Block 2 Oil Exploration Zone along Lake Albert within the Albertine graben. Tullow Oil plc contracted Environmental Resources Management (ERM) Southern Africa (Pty) Ltd in conjunction with Environmental Assessment Consult Limited (EACL) to undertake an Environmental Impact Assessment (EIA) for pre-construction and operation of the proposed EPS. ERM in association with EACL requested National Fisheries Resources Research Institute (NaFIRRI) to conduct a baseline survey of water quality and invertebrates in River Hohwa. This study was requested as part of an earlier baseline survey conducted at the Kaiso-Ngassa spit oil exploration area in Block 2. It was conducted at five selected sites (Fig. 1 & Table 1) within the Hohwa River basin in the Kaiso-Tonya Exploration Area 2. The study was pertinent because the targeted oil wells for EPS are upstream this river which drains the Kaiso-Ngassa valley into Ngassa lagoon.
    Description: Environmental Assessment Consult Limited (EACL)
    Keywords: Environment ; Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17208 | 4230 | 2021-02-27 20:44:10 | 17208 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The purpose of the study was to investigate migratory movements of fishermen on lake victoria.To identify the cuases of fishrmen migration with a view to establishing the paterns of migration;determining season of migration and assessing the impacts of migration on fisheries management and development.
    Description: Implementation of a Fisheries Management Plan (IFMP)
    Keywords: Fisheries ; Sociology ; Lake Victoria Fisheries Research Organization ; LVFO
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17223 | 4230 | 2016-02-19 11:12:33 | 17223 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: postive transformation of the fisheries sector in Uganda has of recent been scatted by failure to mountain fish quality and safety,akey prerequiste for retaining and gaining fish markets.The social cultural study established the extent to which social cutural practices had affected the levels and the use of sanitation facilities,fish handling facilities and artisanal fish processing techniques and the factors that influenced these practices in the fishing communities of lake victoria.This information is of significance for the purpose of advocacy and mobilization of fishers in order to improve sanitation, fish handling and artisanal fishing processing situation in the fishing communities.
    Description: Lake Victoria Environmental Management Project (LVEMP)
    Description: This is LVEMP Socio-Economic Research Report, 6
    Keywords: Fisheries ; Sociology
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17144 | 4230 | 2016-03-01 14:25:04 | 17144 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: Following the commencement of construction works of a 250 MW hydropower plant at Dumbbell Island in the Upper Victoria Nile in September 2007, BEL requested NaFIRRI to conduct continuous monitoring of fish catches at two transects i.e. the immediate upstream transect of the project site (Kalange-Makwanzi) and the immediate downstream .transect (Buyala-Kikubamutwe). The routine monitoring surveys were designed to be conducted twice a week at each of the tWo transects. It was anticipated that major immediate impacts were to occur during construction, and these needed to be known by BEL as part of a mitigation strategy. For example, the construction of it cofferdam could be accompanied by rapid changes in water quality and quantity downstream of the construction. These changes in turn could affect the fish catch and would probably be missed by the quarterly monitoring already in place. Therefore, a major cbjective of the more regular and rapid monitoring was to discern immediate impacts of construction activities by focusing on selected water quality parameters (total suspended solids, water conductivity, temperature, dissolved oxygen and pH) and fish catch characteristics (total catch, catch rates and value of the catch)
    Description: Prepared for Bujagali Energy Limited (BEL)
    Keywords: Environment ; Fisheries
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    National Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17146 | 4230 | 2020-10-12 18:18:08 | 17146 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-10
    Description: A key aspect in the approval to develop a 250 MW hydropower project on the Upper Victoria in Uganda was to include an environmental monitoring component during construction and after the construction phase. Baseline information on the aquatic ecosystem and fisheries of the Upper Victoria Nile was part of the EIA submitted to NEMA by AES Nile Power during 2000. Subsequently, this information was updated in April 2006. Fisheries are important socio-economically and in terms of the high fish species diversity in aquatic ecosystems in Uganda. Therefore, the National Fisheries Resources Research Institute (NaFIRRI) has been part of these developments providing specific inputs related to the fisheries and aquatic ecosystem of the Upper Victoria Nile to EIA of hydropower schemes in the country. As aquatic organisms of environmental and socio-economic importance, different species of fish and fish populations are effected by various factors mostly exploitation.
    Keywords: Fisheries
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    East African Fisheries Research Organisation | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16877 | 4230 | 2020-08-23 07:25:41 | 16877 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-09
    Description: The material described in this paper was collected during a survey of the fish and fisheries of the Malagarazi River and swamps carried out in August and September, 1952, by members of the East African Fisheries Research Organisation and the Inland Fisheries Officer (Kigoma). Previous records of Cichlid fishes from the Malagarazi River have been published by David (1937) and Poll (1946 and 1948). These included Haplochromis burtoni (Ganither)'and H. malagaraziensis David from the upper reaches of the river, and Tilapia karomo Poll from the delta. The present collection was made at Uvinza and Iragala on the open river and at Katare on one of the numerous swamps. Besides the one new species described below, Horei burtoni and H. horei were collected at Irangala, and a species of Serranochromis at Uvinza and Katare. Two apparently new species of Haplochromis were collected in all three areas and will be described at a later date.
    Keywords: Fisheries
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    East African Fisheries Research Organisation | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16887 | 4230 | 2020-08-23 07:41:40 | 16887 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-09
    Description: The parasitic Copepod Lernaea bistricornis Harding was described by Harding (1950) from a single specimen found in Lake Tanganyika on the endemic Cichlid fish Cardio pharynx schoutedeni POLL. No further specimens were known until when several individuals were collected in the same lake by Dr. G. MARLIER from the endemic Cichlid fishes Cyathopharynx Furcifer (Boulenger) and Callochromis pleurospilus (Boulenger). These records indicate that L. bistricornis has fairly wide host preferences, at least within the fainily Cichlidae, and suggest that, like its relative L. lophaira Harding which parasitizes the Cichlid fishes of L. Nyasa, it is capable of parasitizing any member of this group within its range of distribution.
    Keywords: Fisheries
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16893 | 4230 | 2016-02-19 10:50:34 | 16893 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-09
    Description: Implications of the fish export trade on the people and the fisheries resource of LakeVictoria, Uganda were examined. Eight fish processing factories and ninety fishers wereanalyzed in terms of socio-economic characteristics of fishers and the economic characteristics of fish factories. Results indicated that industrial fish processors in Uganda are presently the main link between the artisanal fisher-folk and the overseas export markets. Their entry into the market has stabilized and expanded the fisher-folk market and average earnings. Fishers attributed improvement in incomes and living standards (76%) to positive changes in the fish market (78%) in the last 5 years (1994-1999). Ugandan fisher-folk communities are not seriously affected by the Nile perch exports (73%) because they normally have easy access to cheap fish at prices much less than urban prices and; depend mainly on alternative fish species of less export value. The price of Nile perch influences positively the price of Tilapia
    Description: Lake Victoria Environmental Management Project (LVEMP)
    Description: Paper presented at Colline Hotel, Mukono- LVEMP and NARO National Scientific Conferences, 2001 and at Glow III Conference, Arusha, Tanzania, 2002
    Keywords: Fisheries
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    East African Freshwater Fisheries Research Organization | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16898 | 4230 | 2015-06-04 18:00:02 | 16898 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-09
    Description: The construction of several barrages in order to develop the hydroelectric and irrigation potential of the Tana river has been proposed and the probable effects of these developments upon the fish and fisheries of the area' has been investigated. Briefly in the highest reaches the sport fishery will be unaffected, in the middle reaches the sparse subsistence fisheries will be only slightlyinconvenienced but in the terminal reaches of the river the subsistence and commercial fishing enterprises are expected to be seriously reduced by the progressive re-regulation of river-flow. However each new dam will support a new and productive reservoir fishery and with proper development the annual yield of fish from the Tana basin is expected to increase considerably.
    Description: Top of title page: EAFFRO Occasional Paper, 10
    Keywords: Fisheries ; EAFFRO
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17371 | 4230 | 2016-03-04 09:05:36 | 17371 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The Nabugabo lakes are an important source of affordable protein food inthe form of fish, income, water for domestic and commercial purposes(aquaculture farm and Hotels), handcraft materials (mats, hats, roof thatch) andfishing floats and rafts. Nabugabo lakes provide employment, income and exportearnings to Uganda that flow from the act of harvesting the fish. In Uganda thefisheries sector directly employs 350,000 people and indirectly 1.2 million people.In 2005, it is estimated that about 370,000 mt fish export (97-98% Nile perch)earned Uganda US $ 143 Million up from US $ 103 million in 2004 .and up fromUS $ 45 million in 1996. , making it almost become the first non' traditional exportcommodity. The Nabugabo lakes are also import for cultural values and fishspecies from these lakes are important in evolutionary studies. The fishery sectoris therefore very important in Uganda's socio-economic life. Despite the abovevalues to the communities and global biodiversity roles, the amount of fish caughtand the number fishing fleets operating on the Nabugabo lakes to guidemanagement of the lake are lacking. The fishery that exists in these lakes islargely for subsistence and commercial purposes specific for Lake Nabugabobased on introduced species (Nile perch and Nile Tilapia). The fish is caughtusing mainly gill nets and long line hooks.
    Description: On title page: Theme 3: Enhancing integrated management of natural resources Project : Generation of knowledge and technologies that ensure sustainable utilisation of fish stocks (capture fisheries)
    Keywords: Fisheries
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    Lake Victoria Fisheries Organization (LVFO) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17201 | 4230 | 2020-10-17 15:37:03 | 17201 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The report provides information on the acoustic survey conducted on Lake Victoria from 18th feb-17th march 2006. The objective of the survey was to provide biomass estimates and distribution of the two main commercial species Nile Perch (above 10cm TL) AND Dagaa (Rastrineobola agentea). The rest of the species are grouped as haplochromines and others.Acoustic surveys are conducted biannually during the January/ February period when the lake is thermally stratified and during August/September period when the lake is mixed,to capture the differences in stock distribution during the two main seasons which influence fish distribution in Lake Victoria.So far, eight survey have been carried out using the same boat (R.V. Victoria Explorer) and equipment(SIMRAD EY500 echo-integrator),but with changes in survey design and data processing protocols.Environment parameters are also studied to monitor the status and understand how physical, chemical and biological processes interact and influences fisheries production.
    Keywords: Fisheries
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    Lake Victoria Fisheries Organization (LVFO) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/17206 | 4230 | 2020-10-17 15:36:16 | 17206 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-11
    Description: The 10th lake-wide hydro-acoustic survey under IFMP was conducted on Lake Victoria from 17th March – 16th April 2010 with the overall objective of estimating the standing stock of the major commercial fish stocks in the lake. Environmental and bottom net sampling were concurrently done using a CTD profiler and a bottom trawl net respectively. Two CTDs from NaFIRRI (Old and New) were used following the malfunctioning of the KMFRI CTD that has been used in all the previous surveys and is now due for service. Acoustic Data were analyzed using Echoview 4.90 software recently released by Myriax. Illustration of Spatial distribution of fish stocks and water environmental parameters were drawn in Arcview 3.2.
    Keywords: Fisheries
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    East African Freshwater Fisheries Research Organization | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/16947 | 4230 | 2016-02-27 15:21:09 | 16947 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-09
    Description: If recent estimates are accurate the world’s human population can be expected to double in the next thirty years. The rate of growth will likely be even greater in many African nations, yet food supplies in these countries especially of essential animal proteins, are even not; inadequate Clearly increased production of food for domestic consumption must become a high- prioritydevelopment goal.The inland fisheries of Africa will play an increasinglyimportant role in augmenting protein supplies. In 1970, production of the inland fisheries was already-about 1.4 million metric tons, and had increased some 71 per cent in the previous six years. With further development and more affective fishery management a two-fold increase 1n output over the present level can reasonably be expected.Effective management of the fisheries at optimum exploitation levels end development of under utilized fish resources will neccessite major improvement in the stastistical systems employed to produce information on the fish stocks and fisheries. More reliable and detailed information on the catch, effort and other important aspect of the fishing enterprises will be required.
    Keywords: Fisheries ; EAFFRO
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19336 | 4230 | 2021-02-13 22:56:01 | 19336 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-25
    Description: Uganda has a high potential for fish production. About 18% of the country's surface is covered by lakes, rivers and swamps which are sources of fish. The country has capacity to produce about 300,000 metric tones of fish annually. However the maximunl catch ever realized is 245,000 metric tones in 1990 after which catches declined by 1.5% from 221,900 metric tones in 1996 to 218,680 metric tones in 1997. When the stocks of Lake Victoria were investigated during a joint survey conducted by UNIJP/FAO and EAFFRO in 1969/71, the contribution of the Nile perch, Lates niloticus to the total demersal ichthyomass of the lake was then insignificant (Fisheries Department. Ann. Rpt. 1960; Bergstrand & Cordone 1971, Ssentongo & Welcomrtle 1984).
    Keywords: Fisheries
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    National Fisheries Resource Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19333 | 4230 | 2020-09-07 18:47:41 | 19333 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-25
    Description: To modernize the fishery sub-sector there is need to sustainably exploit the resource and manage the environment. This will transform into guaranteed incomes and food security to the fishers and other people employed in the ~ishery related activities. The overall fisheries sub-sector goal is to ensure increased and sustainable fish production and utilization by properly managing capture fisheries, promoting Aquaculture reducing post haNest losses and protecting the fish habitat. This will contribute to the overall national development. policy of poverty eradication and food security through the modernization of thedevelopment sector.
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19334 | 4230 | 2020-09-07 21:42:41 | 19334 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-25
    Description: Rastrineobola argentea locally known as mukene in Uganda, omena in Kenya anddagaa in Tanzania occurs in Lake Nabugabo, Lake Victoria, the Upper Victoria Nile andLake Kyoga (Greenwood, 1966). While its fishery is well established on Lakes Victoriaand Kyoga, the species is not yet being exploited on Lake Nabugabo. Generally such smaller sized fish species as R argentea become important commercial species in lakes where they occur when catches of preferred larger-sized table fish start showing signs of decline mostly as a result of overexploitation. With the current trends of declining fish catches on Lake Nabugabo, human exploitation of mukene on this lake is therefore just a matter of time. The species is exploited both for direct· human consumption and as the protein ingredient in the manufacture of animal feeds.
    Keywords: Fisheries
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19341 | 4230 | 2020-09-07 22:06:21 | 19341 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-26
    Description: Decline in fish stocks and fish species diversity due to excessive fishing effort. 2. Use of destructive fishing gears and methods e.g seines, cast nets, of recent mono-filament nets, tycooning, etc. 3. Capture of immature fish. 4. Invasion by water hyacinth and floating sudds 5. Ineffective management of fisheries due to limited (reluctance) community participation in lake management affairs. 6. Of recent, illegal buying and selling of fish in the lake without landing deprives the department of statistics and also puts the owner of fishing vessels at risk. 7. Lack of coordination among fisheries departments of districts of Kyoga basin (Le. differences in policies from districts to district -laxity in law enforcement). 8. Inadequate investment skills among fishers . .9. Political interference -creation of illegal landings 1a.llI-facilitated field staff. makes monitoring difficult and kills morale • . 11. Pollution and degradation of• the fish habitat from construction works and agro-cbemicals. 12. Poor infrastructure 13. Lack of control of licensing by fisheries staff 14.The rising water levels in the lake cause serious impacts to the fishing expeditions by way of destruction of the fishing gears and sudden blockages of landing site entries. 15. Some areas at the •shoreline show high degree of sedimentation. These areas being breeding areas for fish are seriously interfered. 16. Water hyacinth is still highly patched in some fishing grounds
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: conference_item
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19326 | 4230 | 2020-09-07 21:03:02 | 19326 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-25
    Description: Productivity processes may be defined as involving the conversion/mobilisation of energy for storage into various biological forms. The major biological (forms relevant to this presentation are bacteria, algae aquatic macrophytes, invertebrates and fish. The non living form is Deritus.The purpose of this paper is to outline in generalised terms, the processes through which energy is mobilised from the various transitional storage towards fish production
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 92
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    Fisheries Resources Research Institute (FIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19329 | 4230 | 2020-08-31 00:16:37 | 19329 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-25
    Description: Aquatic systems cover 18% of Uganda's surface area in form of lakes rivers and swamps. The lakes can be grouped into Major and Minor lakes. Lakes Victoria, Kyoga, Albert, Edward and George form the Major lakes. A host of small lakes many of them associated with (satellite to) the major lakes form the minor lakes. These minor lakes can further be grouped into Nabugabo lakes, Koki lakes and Lake Wamala as being associated with the Lake Victoria drainage, Kyoga minor lakes (Lakes Opeta, Bisina, Agu, Lemwa, Kawi, Nakuwa, Nawampasa etc.), the numerous western crater lakes and Lake Bunyonyi
    Keywords: Fisheries
    Repository Name: AquaDocs
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  • 93
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19337 | 4230 | 2020-09-07 21:44:19 | 19337 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-25
    Description: Fisheries are based on stocks of wild animals living in their natural environment stock is a sub-set of one species having the same growth and mortality parameters, and inhabiting a particular geographic area and has little connection with adjacent groups. The fish stocks are affected by man's activities and the success of the fisheries depends critically on the state of the fish stocks. Decision-makers need scientific advice about the state of the fish stocks. The science of stock assessment is concerned with provision of this advice
    Keywords: Fisheries
    Repository Name: AquaDocs
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  • 94
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    National Fisheries Resources Research Institute (NaFIRRI) | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19346 | 4230 | 2020-09-07 22:02:29 | 19346 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-26
    Description: Overview: Fish distribution patterns•Definition of habitatSpatial dimensions of habitatstemporal dimensions of habitatsFish Movements and MigrationsFactors affecting suitability of fish habitatsHabitat structureThe influence of watershed characteristics on fish habitatsFish habitat conservation issues for Lake KyogaThe way ahead for fisheries management for all water bodies Comprehensive policy interventions at local-district and national levels for lakes
    Keywords: Fisheries
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  • 95
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    Fisheries Resources Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19437 | 4230 | 2020-08-31 00:09:42 | 19437 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-28
    Description: The average diet in Uganda, particularly among the poor majority of the population, is unbalanced, based on starchy food crops, resulting in apparent protein deficiency. There are indications of high prevalence of chronic malnutrition of children of 12-56 months (SSALI & SEWANKAMBO 1991). The production and consumption of protein food is still undeveloped, presenting an apparent potential and clear need in the country.There are also indications that fisheries is the sector with probably the biggest, untapped potential as source of protein food. It is can also produce the cheapest high-quality protein, particularly for those populations near the main water bodies that cover 18% of the total surface in the country. Fish has been the most important source of protein in the whole. country mainly because of its low price. Present fish consumption accounts for 4.8% of household food budget, compared to 8.7% for meat and poultry, 5.8% for milk and eggs and 9.7% for fruits and vegetables (MPED 1991c).
    Description: First Technical Report
    Keywords: Fisheries
    Repository Name: AquaDocs
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  • 96
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    Uganda Freshwater Fisheries Research Organization | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19439 | 4230 | 2020-11-08 17:22:15 | 19439 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-28
    Description: Uganda has been able to achieve increasing growth rates of up to 7% per annum over the last five years under the Government's reforms programmes set up to redress economic imbalances through economic rehabilitation, growth and development (MPED 1987). The main objective of these reform programmes is to achieve GDP growth rate of at least 5% and reduce inflation rate to 15% by the end of June, 1993 (MFEP 1992). However, there is now the problem of sustaining this high growth rate, much of which has been achieved from the agriculture sector. Falling world prices for the major agricultural products, namely coffee and cotton, coupled with increasingly unpredictable weather conditions in the country have led to major fluctuations in the performance of the agricultural sector over the years, and thus in the overall performance of the economy. In 1991/92 financial year, for example the growth rate in the economy fell from 3.9% in the previous year to 1.8%, while within agriculture it fell from 2.6% to -1.5%. This fall has been attributed to the factors mentioned above.There has been a growing concern over this situation and the Government has been exploring' avenues for expanding and diversifying the economic base of the country away from the traditional agricultural crops.
    Keywords: Fisheries
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    Uganda Freshwater Fisheries Research Organisation | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19440 | 4230 | 2021-02-13 23:35:26 | 19440 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-28
    Description: Uganda comprises of about 241,000 km2 or 18% is water (Lakes and Rivers, swamps, dams, valley tanks and fish ponds) (MPED 1991a). It is estimated that these waters produce 219,.000 tonnes 'of fish (UFD 1991) major contributors being Lake Victoria followed by Kyoga. Other important producers include Lakes Albert, Edward and George and Albert "Nile. In terms of species composition, Nile perch and Tilapine species represent by far the most significant proportions of the catch accounting for 51% to 39% respectively (UFD 1989). Uganda has a population of 16.6 million people (1991 census) of whom 90% live in rural areas with major occupation being peasant agriculture. Thispopulation is made up of more than 52 ethnic groupings whose., diet is varied depending on cultural influences, geographical location and climate. Per capita fish consumption is estimated ,at 12 kg per annum (UFD 1990).The average diet in Uganda particularly among the poor majority of population is unbalanced, mainly based on starchy food crops as roots and . tubers, cereals and banana. There are indicators of high prevalence of 'chronic malnutrition of children of 12 -56 months (SSALI and SEWANKAMBO 1991). There are also diseases like Goitre, Rickets and Blindness in the adult population caused by nutritional defficiencies. The production and consumption of protein food is still under-developed, presenting a potential to be exploited.
    Keywords: Fisheries
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    National Fisheries Resource Research Institute | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/18884 | 4230 | 2020-11-08 17:15:45 | 18884 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-07-12
    Description: The purpose of this brochure is to communicate research results on economic returns for fishing enterprises on Lakes Albert, Kyoga and Victoria and strategies for enhancing market access, aimed at improving incomes of fishers.
    Description: pamphlet
    Keywords: Fisheries
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  • 99
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    Uganda Freshwater Fisheries Research Organization | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19443 | 4230 | 2020-10-12 18:45:44 | 19443 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-28
    Description: The overall objective of research program at the Uganda FreshwaterFisheries Research Organization (UFFRO). has been' the promotion. of sustainable development of the major fisheries resources of Uganda; namely the Nile perch, Nile tilapia and Dagaa. The institution endeavours to provide the information necessary for the rational exploitation, managementand the enhancement of an appropriately balanced mix of fish species.I〉 The Fish Commodity Systems Economics (U) Project focuses on the economic component of the program. Its overall objective is to improve performance of the fisheries sector within the framework of sustainable development It is a three year project and was officially started in June 1992, with funding from the International Development Research Centre (IDRC) of Canada. Its primary concern is with improving the main aspects of fisheries sector performance, namely contribution to the people's diet income and employment,the environment and Uganda's balance of paymentposition.
    Keywords: Fisheries
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    National Agricultural Research Organisation | Jinja, Uganda
    In:  http://aquaticcommons.org/id/eprint/19457 | 4230 | 2020-10-26 06:23:50 | 19457 | National Fisheries Resources Research Institute, Uganda
    Publication Date: 2021-06-29
    Description: Papyrus can be used as alternative to woodfuel for smoking fish. The product is as acceptable as fish smoked with woodfuel. Smoking with papyrus offers no immediate price premium to the fish smoker but some net profit advantages may arise where costs can be reduced by its use, and where quality improvements can be obtained by the closer attention to the smoking process necessitated by papyrus. In locations where papyrus and woodfuel are both abundant there is no perceived cost advantage to the fish smoker in smoking with papyrus and papyrus is rarely seen as a possible alternative to woodfuel, even in areas of woodfuel scarcity. Given the sociological and economic values attached by the government of Uganda to riverine and lakeside forests,further efforts to disseminate knowledge ofpapyrus as an alternative fuel, and of the fuel savings to be gained in using improved kiln designs are recommended.
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
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