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  • Aquaculture  (199)
  • Limnology  (85)
  • Chemistry
  • Inorganic Chemistry
  • MASERS
  • FISON  (211)
  • Environment Agency North West  (75)
  • 2020-2022  (286)
  • 1960-1964
  • 1950-1954
  • 1930-1934
  • 1915-1919
Collection
Keywords
Publisher
Years
  • 2020-2022  (286)
  • 1960-1964
  • 1950-1954
  • 1930-1934
  • 1915-1919
Year
  • 1
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    River Ehen and tributaries SSSI (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10956 | 1256 | 2013-03-26 13:56:11 | 10956 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-25
    Description: This is the River Ehen and Tributaries SSSI consultation Protocol for the Environment Agency with English Nature, produced in 1998. The Protocol is intended to provide for consistency of approach, to clarify responsibilities and help to streamline the statutory consultation and consenting procedures in which both organisations are involved. It provides guiding principles on the approach to management issues. Based on the operations likely to damage the special interest (OLDSI) which forms part of the SSSI notification, the protocol identified acceptable management activities which contribute to the special interest of the site and those which may adversely affect that interest. OLDSI includes activities such: land drainage consents, discharge consents, herbicides approvals, fish-stocking consents, fishing licences, abstraction and impoundment licences, consents to construct/test pump boreholes, integrated pollution Control Licences and Waste Management Licences, capital projects, flood defence maintenance works, water resources, fisheries, pollution control, ecology surveys and Recreation works.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Ehen catchment ; Inland waters ; Rivers ; Freshwater lakes ; Nature conservation ; SSSI ; OLDSI ; Freshwater pollution ; water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 29
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  • 2
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    The history of contamination in sediments from the Mersey Estuary. Development of a chronology for the contamination of the Mersey Estuary by heavy metals and organochlorines (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11003 | 1256 | 2013-03-26 13:45:42 | 11003 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-26
    Description: This is the history of contamination in sediments from the Mersey Estuary: Development of a chronology for the contamination of the Mersey Estuary by heavy metals and organochlorines Report produced by the Environment Agency in 1998. This report looks at the history of industrial contamination of the Mersey and Ribble Estuaries back to the early part of the last century, many decades before the start of monitoring programmes providing a remarkably detailed picture of very complex changes. There is a clear record in the sediment of the contamination by each heavy metal (including: Cu, Cr, Hg, Pb, Zn) and organochlorine chemical (including DDT isomers and PCB congeners) studied. The results of the study clearly show the increases in levels of contamination as industry expanded early last century followed by various improvements as this century progressed. Each pollutant has its own idiosyncratic pattern of change with some improvements predating modern environmental concerns whilst other changes seem to relate directly to recent improvements in legislative control. Overall, for the pollutants studied, the results clearly demonstrate the magnitude of improvement that has been achieved in what was a very polluted area. The only major reservation to this story is that despite the wide range of substances covered, many other potentially important pollutants remain to be studied in a similar manner.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Mersey ; Ribble ; Inland waters ; Rivers ; Estuaries ; Heavy metals ; Lead ; Arsenic ; Chromium ; Copper ; Mercury ; Zinc ; Organochlorines ; HCB ; PCBs ; DDT ; Environmental Assessment ; Freshwater pollution ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 104
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  • 3
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    Mersey Estuary baseline survey. Analysis of macroinfaunal samples, literature review and database production (2021)
    Environment Agency North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11005 | 1256 | 2013-03-26 13:45:23 | 11005 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-26
    Description: This is the Mersey Estuary baseline survey: Analysis of macroinfaunal samples, literature review and database production report produced by the Environment Agency North West in 2002. This report presents an ecological review of the Mersey estuary along with an extensive bibliography of the available environmental literature for this system. The central objective of this programme has been to provide the information necessary to support the Environment Agency's review of existing and future consents (for discharges, abstractions etc) in the Mersey estuary. This review of consents was required because the Mersey had been designated as a Special Protection Area (SPA) under the EC Birds Directive. Therefore under Regulation 50 of the Conservation, the Environment Agency was responsible for reviewing any extant consent, or future applications, which may directly or indirectly, affected this SPA.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; Mersey ; Inland waters ; Rivers ; Estuaries ; Survey ; Habitat Directive ; Birds Directive ; SPA ; Invertebrates ; Birds ; Sediment quality ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 26
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  • 4
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    Netting in Black Moss Tarn 1954 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11042 | 1256 | 2013-03-30 13:23:21 | 11042 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-26
    Description: Five fishermen pulling net in Black Moss Tarn. This photo is part of a photo album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; Management ; England ; Cumbria ; Inland waters ; Tarns ; Fisheries ; Freshwater fish
    Repository Name: AquaDocs
    Type: image
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  • 5
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    Workers at Sprint Mill 1953 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11044 | 1256 | 2013-03-30 13:17:27 | 11044 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-26
    Description: Five men working in the reinforcement of the Sprint Mill weir in Cumbria, UK. This photo is part of a photo album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; Management ; England ; Cumbria ; Inland waters ; Rivers ; Fisheries ; Fish passes
    Repository Name: AquaDocs
    Type: image
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  • 6
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    20lb Pike from River Lune transferred by two men to Roan Head (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11046 | 1256 | 2013-03-30 13:19:48 | 11046 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Two men with a 20 lb. pike from Lune being transferred to Roan Head, North West England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; Management ; England ; Inland waters ; Rivers ; Freshwater fish ; Fisheries ; Fish farm
    Repository Name: AquaDocs
    Type: image
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  • 7
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    Pulling net in Lune Estuary 1949 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11051 | 1256 | 2013-03-30 13:21:01 | 11051 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Two fishermen pulling a net in a boat in Lune Estuary, North West England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lune estuary ; Estuaries ; Marine fisheries
    Repository Name: AquaDocs
    Type: image
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  • 8
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    Rooks fish pass at Garstang Weir in River Wyre (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11059 | 1256 | 2013-03-30 13:22:06 | 11059 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Rooks fish pass at Garstang Weir in the River Wyre, North West England, UK. This photo shows pollution in River Lune in July 1949. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Freswater fish ; Migratory fish ; Fish passes
    Repository Name: AquaDocs
    Type: image
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  • 9
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    Fishing eels (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11065 | 1256 | 2013-03-30 13:22:33 | 11065 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: An unidentified man on a Winter day with more than ten eels over snow. The photo was taken at an unidentified location in the North West of England. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Inland waters ; Rivers ; Fisheries ; Fishing ; Eels
    Repository Name: AquaDocs
    Type: image
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  • 10
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    River Lune the Baulk, Cockersand Abbey Lighthouse 1949 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11068 | 1256 | 2013-03-30 13:23:02 | 11068 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Cockersand Abbey Lighthouse, in River Lune the Baulk, River Lune estuary on the Lancashire Fylde peninsula in the North West of England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lune estuary ; Estuaries ; Marine fisheries
    Repository Name: AquaDocs
    Type: image
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  • 11
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    Baines Pool Hen Pike caught 7.3.1950 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11069 | 1256 | 2013-03-30 13:23:13 | 11069 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: A fisherman with a hen pike caught on the 7.3.1950 at Baines Pool, North West of England, UK. This photo is part of a photo album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Freshwater fish
    Repository Name: AquaDocs
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  • 12
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    Hindburn Force Weir in 1954 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11071 | 1256 | 2013-03-30 13:23:38 | 11071 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Photo of Hindburn Force Dam, North West of England, UK, including a fish pass. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Fisheries ; River works ; Fish pass
    Repository Name: AquaDocs
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  • 13
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    Churchtown Weir in the River Wyre May 1949 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11078 | 1256 | 2013-03-30 13:24:07 | 11078 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: ChurchTown Weir in the River Wyre, North West of England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Freswater fish
    Repository Name: AquaDocs
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  • 14
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    Fish Trap at Gastang weir in the River Wyre in August 1951 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11079 | 1256 | 2013-03-30 13:24:15 | 11079 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Fish trap at Garstang weir in the River Wyre, North West of England, UK. This photo shows pollution in River Lune in July 1949. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Freswater fish ; Migratory fish ; Fish passes
    Repository Name: AquaDocs
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  • 15
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    A report on the strategic fisheries stock assessment survey of the minor catchments in South West Cumbria 1996 with particular reference to salmonids (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11088 | 1256 | 2013-03-29 14:15:54 | 11088
    Details
    Publication Date: 2021-06-27
    Description: This is the report on the strategic fisheries stock assessment survey of the minor catchments in South West Cumbria 1996 with particular reference to salmonids, produced by North West Water in 1994. The 1996 Minor Catchment survey indicates variations in salmonid production within these catchments. Survey results indicate that production may be reaching its limit in certain areas whilst others are underachieving and others are unsuitable for salmonid production. Trout production within the catchments is higher and more widespread than that of salmon. Water quality levels vary considerably between catchments and intra-annually within individual catchments. The need for selective habitat surveys, with a view to habitat improvement schemes (H.I.S) is discussed. This report formed a basis for subsequent reports, thus, allowing data comparisons and analysis of production level fluctuations. It was the most extensive assessment of these catchments to date, taking into account comparisons with the new National Database on salmonid production in England and Wales.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; South West Cumbria ; Inland waters ; Rivers ; Freshwater fish ; Fish populations ; Migratory species ; Freshwater fish ; Fish passes ; Fish catch statistics ; Fishery data ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 13
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  • 16
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    A hydraulic investigation of the River Lune. (2021)
    Environment Agency North West | UK
    In:  http://aquaticcommons.org/id/eprint/11093 | 1256 | 2013-03-29 14:19:10 | 11093 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-24
    Description: Historic film on the River Lune, North England, UK. It shows the River Lune near its estuary at Lancaster. The film was made in the summer of 1972 over several weeks and is 14:25 minutes long. It combines aerial shots of the River, scientific and hydraulic work by the University of Salford which worked on a new weir of the Lune (Skerton Weir). Audio commentary explains the work. The film was produced by Cinephoto House, Manchester, on behalf of the predecessor orgenaisation of the Environment Agency, UK. The intended audience of the film is unknown.
    Description: Environment Agency Archives North West
    Description: The film has been digitised from 16mm cine film. A higher resolution video of the film can be found here: http://www.youtube.com/watch?v=ixyCQewKPDU
    Keywords: Engineering ; Fisheries ; Limnology ; England ; Skerton Weir ; Lancaster ; River flow ; Estuaries ; Fish passage ; Flooding ; Forge Weir ; Hydraulic models ; Engineering ; Tide ; fish migration
    Repository Name: AquaDocs
    Type: other
    Format: text/html
    Format: video/mp4
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  • 17
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    Report on fisheries invertebrate survey of the Groove Beck,Thornsgill Beck,Troutbeck system (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11101 | 1256 | 2013-04-03 15:27:14 | 11101 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the Report on fisheries invertebrate survey of the Groove Beck, Thornsgill Beck and Troutbeck system produced by the Environment Agency North West in 1997. In 1996 the National Rivers Authority (NRA) report on the 1992 strategic stock assessment for the Upper Derwent catchment Jane Atkins recommended that should subsequent electrofishing show continued low densities, a survey of the invertebrate fauna should be undertaken to assess the food availability for salmonids, in order that lack of food could be ruled out as a contributory factor in their poor breeding success. Additionally the survey looked at the substrate to try to determine whether the bed type might actually be unsuitable for spawning, especially in view of the previously mentioned silt inputs.
    Description: Environment Agency Archives North West
    Description: + tables
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Groove Beck ; Thornsgill Beck ; Trout Beck ; Inland waters ; Rivers ; Environmental survey ; Freshwater fishes ; Migratory species ; Invertebrate larvae
    Repository Name: AquaDocs
    Type: monograph
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  • 18
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    South Pennine Moors cSAC-SPA. North West Region-South Area (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10986 | 1256 | 2013-03-26 13:50:54 | 10986 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-06-25
    Description: This is the report on Habitats Directive, the Review of Consents Stage 1 and 2 by the Environment Agency of the South Pennine Moors cSAC/SPA.The Habitats Directive has the main aim to promote the maintenance of biodiversity by defining a common framework for the conservation of wild plants and animals and habitats of community interest. The Directive establishes a European ecological network known as "Natura 2000". The network comprises Special Areas of Conservation (SAC) and Special Protection Areas (SPA). In the section on Stage 1 or Screening Process of the Habitat Directive, it is identified the likely impacts upon the Rixton Clay Pits cSAC of a project, plan or activities, either alone or in combination with other projects, plans or activities, and considers whether these impacts are likely to be significant. In the section on Stage 2 or Appropiate Assessment of the Habitat Directive, it is considered the impact on the integrity of the Rixton Clay Pits cSAC of the projects, plans or activities, either alone or in combination with other projects, plans or activities, with respect to the site’s structure and function and its conservation objectives. Additionally, where these are adverse impacts, an assessment of the potential mitigation of those impacts. The criteria used in this report to identify relevant projects, plans or activities and their impacts are water quality discharge consents, waste management licences, abstraction licences, Integration Pollution Control (IPC) and Integrated Pollution Prevention Control (IPPC) permits. Proformas, hydrogeological and GIS maps are included in the review.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; South Pennine Moors ; Habitats Directive ; SAC ; SPA ; Screening ; Assessment ; Impacts ; Waste management ; Discharge licences ; Abstraction licences ; Pollution prevention ; Pollution control
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 91
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  • 19
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    Rostherne Mere water level management plan. Draft 1 November 1996 (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10995 | 1256 | 2013-03-26 13:48:07 | 10995 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-06-26
    Description: This is the Water Level Management Plan for the Rostherne Mere by the Environment Agency. The purpose of the Plan is to provide a formal basis for managing the land drainage system and water supply system of the area in order to provide a sustainable balance between the conservation and agricultural interest in the area. No changes are proposed to present water level management or maintenance practices unless and until such changes are agreed by all parties.The report contains sections on description of Site, water level management, maintenance, nature conservation, agriculture, fisheries, archaeology, water quality and water resources, development adjacent to watercourses, contingencies and objectives of the Water Level Management.
    Description: Environment Agency Archives North West
    Description: +appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; Rostherne Mere ; Habitats Directive ; Drainage management ; Environmental assessment ; Water level ; Water supply ; Sustainable Conservation ; Agricultural interest
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 11
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  • 20
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    Water quality monitoring in the Mersey (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11004 | 1256 | 2013-03-26 13:45:32 | 11004
    Details
    Publication Date: 2021-06-26
    Description: This is the Water Quality Monitoring in the Mersey Estuary report produced by the Environment Agency in 2001. This report focuses on the Water Quality Monitoring Programme held in the Mersey Estuary. Since the mid-1960s water samples have been collected at approximately monthly intervals along the length of the estuary between Warrington and New Brighton and in later years further off-shore. This data-set provides an invaluable resource to determine how the very large capital spending of recent years has resulted in the dramatic improvements in water quality that we are now able to record. Initially, the interest was focused on parameters such as dissolved oxygen, BOD, nutrients and suspended solids. Over the last decades, as analytical methods have improved, toxic metals and persistent organic compounds have been included in the routine monitoring programme at a limited number of sites. Moreover, with the introduction of the European Water Framework Directive monitoring programmes it was an opportune time to review the Mersey monitoring strategy. This revised monitoring programme required data from several other components (water, sediments, flora, fauna, fish and birds. This report also contains information about Routine monthly surveys, Special surveys, Chloralkali Directive, UKNMP, British Geological Survey, EDMAR and NERC Environmental Diagnostics Thematic Programme.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; Mersey ; Inland waters ; Rivers ; Estuaries ; Freshwater pollution ; Heavy metals ; Chloralkali Directive ; Environmental Quality Standards (EQS) ; Water quality
    Repository Name: AquaDocs
    Type: monograph
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  • 21
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    Electrofishing in streams that dry up in the 50's (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11055 | 1256 | 2013-03-30 13:21:37 | 11055 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Three men electrofishing in an unknown a dry stream in North West England, UK, in the 50's. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association. The exact date of this image is unknown.
    Keywords: Fisheries ; Limnology ; England ; Inland waters ; Rivers ; Fisheries ; Freshwater fish ; Electrofishing
    Repository Name: AquaDocs
    Type: image
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  • 22
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    Stockdale Beck waiting for spawners 1954 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11054 | 1256 | 2013-03-30 13:21:28 | 11054 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Three men walking through the Stockdale Beck, North West England, UK, waiting for spawners in 1954. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; North Yorkshire ; Inland waters ; Rivers ; Fisheries ; Freshwater fish
    Repository Name: AquaDocs
    Type: image
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  • 23
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    Collins Weir in River Wyre 1935 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11056 | 1256 | 2013-03-30 13:21:48 | 11056 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Collins Weir in River Wyre, North West England, UK. Photo taken on the 7th of September 1935. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Freswater fish
    Repository Name: AquaDocs
    Type: image
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  • 24
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    New Weir and Fish Pass Whitendale in August 1951 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11064 | 1256 | 2013-03-30 13:22:25 | 11064 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Two men working in a weir and fish pass at Whitendale, North West England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Engineering ; Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Fisheries ; River works ; Weir ; Fish pass
    Repository Name: AquaDocs
    Type: image
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  • 25
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    Abbeystead Fish Pass in the River Wyre, 1949 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11074 | 1256 | 2013-03-30 13:23:46 | 11074 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Photo of a check trap in Abbeystead Fish Pass in the River Wyre in 1949. The River Wyre is located in the North West of England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology
    Repository Name: AquaDocs
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  • 26
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    Hatching cage Tower Mill, 1950 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11075 | 1256 | 2013-03-30 13:23:59 | 11075 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Photo of a hatching cage in Tower Mill, an unidentified location in the North West of England, UK. The image was taken in 1950. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; Inland waters ; Hatcheries
    Repository Name: AquaDocs
    Type: image
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  • 27
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    A report on the strategic fisheries stock assessment survey of the River Winster 1995 together with a coarse fish survey in 1994 and reference to the 1995 drought (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11089 | 1256 | 2013-03-29 14:15:40 | 11089 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: This is the report on the strategic fisheries stock assessment survey of the River Winster 1995 together with a coarse fish survey in 1994 and reference to the 1995 drought, produced by the Environment Agency North West in 1996. Salmonid production within the Winster catchment was dominated by trout although good densities of salmon juveniles were found on some main river sites. Despite suffering drought conditions for much of 1995, only salmon fry production appeared to have been affected. Coarse fish populations once found in the lower reaches of the Winster appear to have declined to very low levels with no fish sampled. This may be partly due to broken tidal gates allowing saline intrusion. It seems that the lower river was suited to the development of a recreational coarse fishery, now that the gates have been repaired. This report completes the strategic stock assessment surveys planned for the period 1992-1995. It represents the last major catchment that was surveyed to determine the current status of fisheries in the South and South West Cumbria areas.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; River Winster ; Inland waters ; Rivers ; Freshwater fish ; Fish populations ; Migratory species ; Freshwater fish ; Fish passes ; Fish catch statistics ; Fishery data ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 13
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  • 28
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    Leven estuary project. Fisheries Department final report (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11092 | 1256 | 2013-03-29 14:14:36 | 11092 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: This is the report on the Leven estuary project: Fisheries Department final report produced by the Environment Agency North West in 1997. This report contains information about Leven estuary, river Leven catchment, river Crake catchment and the Ulverston Discharges. The Leven estuary is characterised by being very shallow, and shares the extremely variable tides and currents that characterize the whole of Morecambe Bay. There was little detailed knowledge of the impact on the Leven estuary, and particularly its fisheries, of the discharges from Ulverston. There has been some concern expressed by the lave netsmen and the general public about the possible harmful effects of the effluents on the biology of the estuary. In the absence of a definite strategy for the protection and management of the estuary was born this project. The project involves water quality monitoring, effluent and estuary toxicity testing, tracking of effluent plumes, and salmonid tagging and tracking. The entire project commenced in June 1995 and was expected to reach a conclusion in March 1997. The information gained from the project was expected to contribute to the creation of a 'mixing zone' for the effluent, and to improve the environmental management of the estuary and protection of its fishery.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; River Leven ; Leven estuary ; River Crake ; Inland waters ; Estuaries ; Freshwater fish ; Fish populations ; Migratory species ; Freshwater fish ; Fish passes ; Fish catch statistics ; Fishery data ; Freshwater pollution ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 65
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  • 29
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    Brown trout habitat assessment on the River Bela catchment (as recommended by the strategic fisheries stock assessment task group 1995) (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11091 | 1256 | 2013-03-29 14:15:05 | 11091 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: This is the Brown trout habitat assessment on the River Bela catchment produced by the Environment Agency North West in 1997. The Environment Agency (EA) and its predecessor the National Rivers Authority undertook strategic fish stock assessments in 1992 and 1995 on the River Bela catchment. These surveys found low numbers of brown trout {Salmo trutta) at some sites. Following this, habitat evaluation assessments were undertaken on the eleven poorest sites Factors probably responsible for declining trout populations on the three main tributaries of the Bela catchment include: Overgrazing by farm stock; Lack of suitable cover for parr; the absence of suitable spawning areas; existing potential of certain areas within the catchment not being utilised, due to poor dispersal. Habitat Improvement Schemes (H.I.S) are discussed and prioritised.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; River Bela ; Inland waters ; Rivers ; Freshwater fish ; Fish populations ; Migratory species ; Freshwater fish ; Fish passes ; Fish catch statistics ; Fishery data ; Water quality ; H.I.S.
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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  • 30
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    The River Ehen salmonid fishery - current status and a summary of fisheries work 1993-1996 (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11090 | 1256 | 2013-03-29 14:15:29 | 11090 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: This is the report on the River Ehen salmonid fishery - current status and a summary of fisheries work during the period 1993-1996, produced by the Environment Agency North West in 1997. This report draws together a number of investigations and surveys undertaken following the 1993 Strategic fisheries survey of the River Ehen. It specifically details the historic catch data available for this catchment for both salmon and sea trout and examines the current stock levels based on this data. Concerns over sea trout stock levels are raised and a detailed examination of the possible limiting factors involved is included. Information from surveys on the River Keekle is analysed with reference to its potential for sea trout production both currently and with the proposed clean up on Oatlands tip. Salmon production in the historically acidified River Liza sub catchment is examined along with ways of boosting production further following recent reductions in acidic episodes. Future and current issues and actions required in the catchment are listed along with the responsible party and estimated costs involved.
    Description: Environment Agency Archives North West
    Description: + maps
    Keywords: Fisheries ; Limnology ; Management ; England ; River Ehen ; Inland waters ; Rivers ; Freshwater fish ; Fish populations ; Migratory species ; Freshwater fish ; Fish passes ; Fish catch statistics ; Fishery data ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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  • 31
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    Cheshire stillwaters summary results 1999 (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10914 | 1256 | 2013-03-22 14:06:01 | 10914 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Cheshire stillwaters summary results 1999 from the Environment Agency North West. In May 1997, a Stillwaters meeting was held to discuss the way forward in stillwaters monitoring. It decided upon the establishment of a three year rolling programme, in which three stillwaters would be monitored three times a year, every third year. During 1999, stillwaters monitored for the third year of the Stillwaters Monitoring Programme were Tabley Mere, Comber Mere and Norbury Mere. Surveys of Petty Pool and Betley Mere continued for a second and third year respectively after water quality concerns were highlighted in previous end-of-year reports. Oak Mere was also surveyed for the third year running due to its unusual ecology. This year, the variety of parameters monitored was limited to algal, zooplankton and water chemical samples. Fisheries and marginal invertebrate surveys were not completed due to lack of resources.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; Cheshire ; Environmental assessment ; Environmental monitoring ; Survey ; Water Quality ; Eutrophication ; Inland waters ; Pollution ; Fish surveys
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 9
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  • 32
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    Stillwaters monitoring programme. Summary results 2001 and 2002 (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10915 | 1256 | 2013-03-22 14:04:59 | 10915 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Stillwaters monitoring programme. Summary results 2001 and 2002 from the Environment Agency North West. Until January 2001 the South Area Stillwaters Sampling Programme consisted of a rolling programme where five to six stillwaters were sampled three times a year (spring, summer and autumn). However, this method was not yielding the water quality information required for long term monitoring. Local weather conditions influence short-term water quality events, e.g. algal blooms, nutrient consumption, stratification, super-saturation etc, so results from one day sampling could only be regarded as individual ‘spot’ samples. Therefore year-on-year comparisons could not be made. It was decided that long-term water quality monitoring of the stillwaters would benefit more from sampling nutrient abundance over winter months. This would give an insight into the carry-over of nutrients available for algal growth the following year and so year-on-year productivity could be assessed. Survey results shown in this report were from: The Mere, Rostherne Mere, Melchett Mere, Tabley Mere, Tatton Mere, Hatchmere, Oak Mere, Black Lake, Chapel Mere, Bar Mere, Oss Mere, Marbury Big Mere, Comber Mere and Betley Mere.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; Cheshire ; Environmental assessment ; Environmental monitoring ; Survey ; Water Quality ; Eutrophication ; Inland waters ; Pollution ; Fish surveys
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 33
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    Stillwaters monitoring programme. Summary results 2004 and 2005 (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10917 | 1256 | 2013-03-22 14:03:12 | 10917 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Stillwaters monitoring programme. Summary results 2004 and 2005 from the Environment Agency North West. This report focuses on the 5th year of winter monitoring analysis in 14 stillwaters in Cheshire. The 14 stillwaters analysed are: Comber Mere, Oss Mere, Marbury Big Mere, Chapel Mere, Bar Mere, Oak Mere, Hatch Mere, Black Lake, Betley Mere, Tabley Mere, Melchett Mere, Tatton Mere, Rostherne Mere and Mere mere. Nutrient availability in the stillwaters analysed is used to look into the productivity of the waterbody. Bank-side water samples were taken for nutrients (Nitrogen and Phosphorous) and chlorophyll. A YSI multi-parameter sonde measures temperature, pH, specific conductivity and dissolved oxygen (% saturation).
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cheshire ; Environmental assessment ; Environmental monitoring ; Survey ; Water Quality ; Eutrophication ; Inland waters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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  • 34
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    Oak Mere continuous monitoring summary report, 1997 to 2000 (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10918 | 1256 | 2013-03-22 14:01:32 | 10918 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Oak Mere continuous monitoring summary report, 1997 to 2000 from the Environment Agency North West. This report focuses on the continuous monitoring programme made by a multi -parameter probe in Oak Mere since summer 1997. From 1999 nutrient and chlorophyll samples were taken when the water quality instrument was serviced. Water level measurements were made since 1998. Moreover, the report shows a summary Oak mere water quality of each year (1997-2000). The physico-chemical parameters and nutrient levels included are: temperature, specific conditions, dissolved oxygen, pH, Depth, secchi disc measurements, chlorophyll a, total Phosphorus, orto-Phosphate, Nitrate, Ammonia, and Silicate.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; Cheshire ; Oak Mere ; Environmental assessment ; Environmental monitoring ; Survey ; Water Quality ; Inland waters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 35
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    Central area redd project [Ribble, Hodder and Lune catchments] (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8380 | 1256 | 2012-03-01 17:30:43 | 8380 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: Redd counting is an integral part of most Fishery Officers duties. The number and distribution of salmonid redds throughout salmonid catchments provides invaluable information on the range and extent of spawning by both salmon and sea trout. A project was initiated by the Fisheries Science and Management Team of Central Area, North West Region in England in liaison with the Flood Defence function. The main objective of this project was to assess redd count data for Central Area and attempt to quantify these data in order to produce a grading system that would highlight key salmonid spawning areas. By showing which were the main areas for salmon and sea trout spawning, better informed decisions could be made on whether or not in-stream Flood Defence works should be given the go-ahead. The main salmonid catchments in Central Area were broken into individual reaches, approximately 1 km in length. The number of redds in these individual reaches were then calculated and a density per lkm value was obtained for each reach. A grading system was devised which involved looking at the range of density per km values and dividing this by five to produce 5 classes, A - E. A sixth class (F) was used where the density per Ion value was 0.00. This grading system was calculated at two levels of detail. Grades for salmon and sea trout were produced for each individual catchment and also on an Area-wide level. Maps were produced using a range of colours to represent the grade for each reach. These maps provide a highly useful overview of the status of salmonid spawning for each catchment over individual years and highlight the key salmon and sea trout spawning areas in each catchment. These maps and the associated summary data should now provide Flood Defence and Fisheries staff with a fairly detailed overview of the status of spawning in any location within the. main salmonid catchments in Central Area. Although these maps are very useful they should only be used as a guide. The current practice of consulting with the local Fishery Officer should be continued to ensure that expert local knowledge is taken into account.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Flood control ; Rivers ; Redds ; Spawning grounds ; Salmon fisheries ; Salmo salar ; Salmo trutta ; Stocking density
    Repository Name: AquaDocs
    Type: monograph
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  • 36
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    River Ribble sheep dip incident September 1997. Electric-fishing survey report (2021)
    Environment Agency North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8557 | 1256 | 2012-12-20 21:10:56 | 8557 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: This report summarises the findings of a series of electric-fishing surveys carried out at four sites on the River Ribble from September 1997 to September 1998. The aims of these surveys were to assess the impact on juvenile salmonids of a pollution incident involving Synthetic Pyrethrin (SP) that occurred near High Birkwith I (SD 802 767) in September 1997.One of these sites was 2.65km upstream of the pollution whilst the remaining three were at varying distances downstream. Data was collected during surveys of the River Ribble in 1992, 97 and 98. The 1997 and 1998 surveys were carried out specifically to monitor for any possible effects of the SP discharge.Data are shown as grades derived from the National Fisheries Classification scheme (NFC). Results are given for the four salmonid life stages; 0+ trout, 〉0+ trout, 0+ salmon, 〉0+ salmon and also Total Salmonids.
    Description: Environment Agency Archives North West
    Description: First year report
    Keywords: Fisheries ; Limnology ; England ; Ribble Catchment ; River Fisheries ; Salmon fisheries ; Fishery surveys ; Biological surveys ; Electric fishing ; Population density ; Juveniles ; Pollution effects
    Repository Name: AquaDocs
    Type: monograph
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  • 37
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    New Weir and Fish Pass Whitendale in August 1951 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11048 | 1256 | 2013-03-30 13:20:33 | 11048 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Two men working in a weir and fish pass at Whitendale, North West England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Engineering ; Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Fisheries ; River works ; Weirs ; Fish passes
    Repository Name: AquaDocs
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  • 38
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    Workers drilling on Hindburn Force in 1954 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11053 | 1256 | 2013-03-30 13:21:20 | 11053 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Two workers drilling on Hindburn Force, North West England, UK, making it more accesible for passing fish. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Fisheries ; River works ; Fish passes
    Repository Name: AquaDocs
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  • 39
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    Electrofishing at Gleaston Beck in 1954 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11045 | 1256 | 2013-03-30 13:17:55 | 11045 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-26
    Description: Five men electrofishing in Gleaston Beck, Cumbria, UK. This photo is part of a photo album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; Management ; England ; Cumbria ; Inland waters ; Rivers ; Freshwater fish ; Fisheries ; Electrofishing
    Repository Name: AquaDocs
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  • 40
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    Colton Beck obstruction removal 1953 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11047 | 1256 | 2013-03-30 13:20:19 | 11047 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: A worker drilling in Colton Beck,, North West England, UK, trying to make it more accessible for fish passing in 1953. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Engineering ; Fisheries ; Limnology ; England ; Cumbria ; Inland waters ; Rivers ; Fisheries ; River works
    Repository Name: AquaDocs
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  • 41
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    Planting Sea Trout Ova 1952 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11049 | 1256 | 2013-03-30 13:20:48 | 11049 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Three men planting out Sea trout ova in a beck in North West England, UK, in 1952. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Inland waters ; Rivers ; Fisheries ; Migratory species
    Repository Name: AquaDocs
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  • 42
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    Transfering Pike to Lancaster Canal March 1950 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11052 | 1256 | 2013-03-30 13:21:12 | 11052 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Two fishermen and a boy transfering pike with a cylindrical keep net to Lancaster Canal, North West England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancaster Canal ; Inland waters ; Rivers ; Fisheries ; Freshwater fish
    Repository Name: AquaDocs
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  • 43
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    River Lune Pollution at Lancaster in July 1949 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11058 | 1256 | 2013-03-30 13:21:58 | 11058 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Houses close to River Lune at Lancaster, North West England, UK. This photo shows the polluted River Lune in July 1949. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; Pollution ; England ; Lancashire ; Inland waters ; Rivers ; Estuaries ; Freswater pollution
    Repository Name: AquaDocs
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  • 44
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    Motor boat "Constance" (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11061 | 1256 | 2013-03-30 13:22:16 | 11061 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: A man on a white motor boat called "Constance" in North West England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; Management ; England ; Fisheries ; Estuaries ; Marine
    Repository Name: AquaDocs
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  • 45
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    Helm and Beaver 1954 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11066 | 1256 | 2013-03-30 13:22:45 | 11066 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Two men in a small motor boat. The photo is called "Helm and Beaver" which is probably a location in the North West of England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Fisheries ; Estuaries ; Marine
    Repository Name: AquaDocs
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  • 46
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    Man with boat "Ribble" (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11067 | 1256 | 2013-03-30 13:22:53 | 11067 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: An unidentified man inside the water in an estuary with a motor boat called "Ribble" in a location in the North West of England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Fisheries ; Estuaries ; Marine
    Repository Name: AquaDocs
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  • 47
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    Churchtown Weir in the River Wyre (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11080 | 1256 | 2013-03-30 13:24:25 | 11080 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Churchtown Weir in the River Wyre, North West of England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; England ; Lancashire ; Inland waters ; Rivers ; Freswater fish ; Fish passes
    Repository Name: AquaDocs
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  • 48
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    Transfering pike to Lancaster Canal, March 1950 (2021)
    Environment Agency North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11070 | 1256 | 2013-03-30 13:23:28 | 11070 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Two fishermen transfering pike using metal containers to the Lancaster Canal, North West of England, UK. This photo is part of a Photo Album that includes pictures from 1935 to 1954.
    Description: Environment Agency Archives North West
    Description: Image taken from Historic Photo Collection containing images on Fisheries and Fish pass construction from 1935 to 1954. The album, originally owned by the Environment Agency North West, is now held by the Freshwater Biological Association.
    Keywords: Fisheries ; Limnology ; Management ; England ; Lancaster Canal ; Inland waters ; Rivers ; Fisheries ; Freshwater fish
    Repository Name: AquaDocs
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  • 49
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    Cheshire stillwaters. Summary results of September 1998 (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10912 | 1256 | 2013-03-22 14:07:34 | 10912 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Cheshire stillwaters. Summary results of September 1998 from the Environment Agency, 1998. In May 1997, a Stillwaters meeting was held to discuss the way forward in stillwaters monitoring. It decided upon the establishment of a three year rolling programme, in which three stillwaters would be monitored three times a year, every third year. Oak Mere, Tatton Park Mere and Hatch Mere were surveyed between the 29th - 30th September as part of the three year rolling programme. Betley Mere, Petty Pool, Scotman's Flash and Pearson's Flash were also surveyed. Surveys also included algal and zooplankton samples, which are to be analysed by APEM and presented in the end of year report. The section on results contains information about water column profile; and nutrients (chlorophyll a; Phaeophytin; Nitrate and Nitrite; Ammonia; ortho-Phosphate; Silicate; and total Phosphorus).
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; Cheshire ; Environmental assessment ; Environmental monitoring ; Survey ; Eutrophication ; Inland waters ; Pollution
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 15
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  • 50
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    Stillwaters monitoring programme.Summary results 2003 and 2004 (2021)
    Environment Agency North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10916 | 1256 | 2013-03-22 14:04:01 | 10916 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Stillwaters monitoring programme. Summary results 2003 and 2004 from the Environment Agency North West. This report is focuses in The Winter Monitoring of Stillwaters Programme, which began in January 2001 with the aim of gathering long term data on nutrient abundance over winter months. This allows assessment of nutrient ‘carry-over’ available for algal growth in the following year, plus year-on-year productivity. 14 stillwaters are monitored each year. The environmental issues associated with each Stillwater are summarised in the table below. Bank-side water samples are taken for nutrients (N, P and S) and chlorophyll. A YSI multi-parameter sonde measures temperature, pH, specific conductivity and dissolved oxygen (% saturation). Survey results shown in this report came from: Oak Mere and Bar mere.
    Description: Environment Agency Archives North West
    Description: + appendices
    Keywords: Fisheries ; Limnology ; Management ; England ; Cheshire ; Environmental assessment ; Environmental monitoring ; Survey ; Water Quality ; Eutrophication ; Inland waters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 13
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  • 51
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    Capacity building and training requirement for effective fisheries and aquaculture extension in Nigeria (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23216 | 19325 | 2018-03-17 12:51:36 | 23216 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: This paper examines the importance of capacity building and training requirement for the benefit of fisheries and aquaculture extension in Nigeria. It involves the analysis of secondary data bothering on the management of agricultural extension in Nigeria over time vis-avis various agricultural development programmes in the past in which fisheries and aquaculture extension was apparently de-emphasized in favour of crop and livestock agriculture. It is therefore recommended as a way forward that a favorable reform in the Nigerian agricultural extension system will be a necessary avenue to put fisheries and aquaculture extension in proper perspective for effective service delivery which will be a good entry point to achieving the millennium development goals of combating hunger, extreme poverty and attainment of food security in Nigeria.
    Description: Includes:-7 refs.
    Keywords: Aquaculture ; Fisheries ; Information Management ; Nigeria ; Extension services ; freshwater environment ; Technology transfer ; Training ; Education ; Sociological aspects
    Repository Name: AquaDocs
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  • 52
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    Proximate composition and amino acids profile of smoked catfish Clarias gariepinus and tilapia Oreochromis niloticus (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23226 | 19325 | 2018-03-18 14:51:17 | 23226 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The proximate composition and amino acids assay of smoked Clarias gariepinus and Oreochromis niloticus were determined using standard procedures. The mean proximate composition of Oreochromis niloticus are 8.9% moisture, 16.00% lipids, 5.6% ash, 44.5% crude protein, 0.42% crude fiber and 24.9% NFE while Clarias gariepinus has 8.19% moisture, 15.55% lipids, 4.725 ash, 40.46% crude protein, 0.50% crude fiber and 30.58% NFE. There is therefore a nutrient variation between the 2 species of fish Oreochromis niloticus has higher crude protein, lipids, moisture and ash content than Clarias gariepinus.The amino acids profile shows that both fishes have 17 amino acids. Apart from Tryptophan, the following essential amino acids Histidine, Methionine, Threonine, Isoleucine, Leucine, Lysine, Valine and Phenylalanine are present in both fish. Oreochromis niloticus however has higher quantities of the essential amino acids except for Histidine than Clarias gariepinus
    Description: Includes:- 2 tables.;2 figs.;7 refs.
    Keywords: Chemistry ; Fisheries ; Clarias gariepinus ; Oreochromis niloticus ; Nigeria ; Kainji L. ; freshwater environment ; Amino acids ; Ash content ; Lipids ; Organic compounds ; Moisture ; Proteins
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  • 53
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    Problems and prospects of fish culture in Mubi, Adamawa State (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23225 | 19325 | 2018-03-18 14:49:23 | 23225 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: This paper reviewed the major problems of fish pond culture in Mubi.The prospects for fish pond are highlighted and a call to awaken people initiatives in Mubi region to invest in fish farming is made so that the nutritional and economic status of the people of the region might be improved through aquaculture. Some of the problems identified are: lack of knowledge of the biology of culturable species, none availability of fish feed, none availability of fish seed and the peculiarity of the weather most expecially the very cold season when the temperature can be as low as 18~'C.
    Description: Includes:- 12 refs.
    Keywords: Aquaculture ; Nigeria ; Mubi ; freshwater environment ; Fish culture ; Freshwater aquaculture
    Repository Name: AquaDocs
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  • 54
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    Determination of intestine length to standard length ratio of some fishes from Ikpoba River and Ovia River, Nigeria with a review of culture of Parachanna obscura (Pisces:Channidae) (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23229 | 19325 | 2018-03-18 14:58:27 | 23229 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The gut length to standard length ratios of twelve fish species from the Ovia and Ikpoba Rivers were calculated to work out their feeding level in the food chain. The mean ratio of five species Brycinus macrolepidotus Smith, 0.9 Parachanna obscura (Gunther), 1.0, Papyrocranus afer. Gunthel; 0.35, and Xenomystus nigri Gunther 0.75, classify them as carnivores. Four species Synodontis eupterus Boulenger; 4.4 S.schall (Bloch and Schneider) 4.8, Tilapia mariae Boulenger, 3.5, and T. tilli (Gervais), 4.7, are herbivores. Three intermediate ratio species B. longipinnis (Gunther), 1.3,Chrysichthys furcatus (Gunther) 1.6, and Clenopoma kingsleyae Gunther, 1.8, are omnivores. The body depth of seven of the species was measured and expressed as percentage of the standard length to ascertain the accommodative capacity of the fish for the gut. In addition a review of culture of snake head fish Parachanna obscura is presented.
    Description: Includes:- 3 tables.;18 refs.
    Keywords: Aquaculture ; Ecology ; Parachanna obscura ; Nigeria ; Ikpoba R. ; Nigeria ; Ovia R. ; freshwater environment ; Fishery biology ; Length ; Ratios
    Repository Name: AquaDocs
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  • 55
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    The genetic characteristics of cephalic abnormality and its aquaculture implication in Clarias gariepinus (Burchell 1822) (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23241 | 19325 | 2018-03-18 15:26:11 | 23241 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Cephalic abnormality in nine mating groups involving Clarias gariepinus with cephalic abnormality, non Cephalic and Maiduguri origin were investigated to determine the level and the genetic basis of the occurrences and its aquaculture implication. The highest mean percentage survival in a Cephalic crossed with non cephalic group was 68.6% whereas the last mean percentage survival was 25.7% in the group of Maiduguri cross with Maiduguri parent. Cephalic abnormality was observed in the crosses with both female and male cephalic with a total frequency ranging from 0 % to 70.8. %. The least number of cephalic abnormality was 18.5% which involved a cross of non cephalic with cephalic, and the highest was 70.8%. This level of cephalic abnormality shows that the defect was hereditary. This result implies that, the genetic factor is a major contributor in the feature of cephalic abnormality in Clarias gariepinus.
    Description: Includes:-1 table.;3 appendixes.;11 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; freshwater environment ; Diseases ; Deformation ; Fish culture ; Genetics ; Abnormalities ; Genetic abnormalities
    Repository Name: AquaDocs
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  • 56
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    Socio-economic factors influencing aquaculture development in Sokoto State (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23243 | 19325 | 2018-03-25 12:36:45 | 23243 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The study was carried out in five local Government Areas namely Sokoto North, Bodinga, Kware, Ilila and Tambuwal mapped out by International Fund for Agricultural Development as fishery potential areas. Seven villages namely Gidan Igwai, Kaurar Kwasau, Gidan Akwara, Tozai, Tambuwal, Mogajin Gari, and Badau also were selected all at random. Fish farm management questionnaire was used for data collection. Results revealed that adequate fish farm facilities, fish seed supply, private sector confidence and support, risk consderation, government support and investment, over popularized livestock poultry sub sector and fishery extension service are the problems of fish farming. Recommendations were made as to how to improve fish farming in Sokoto State.
    Description: Includes:- 17 refs.
    Keywords: Aquaculture ; Sociology ; Nigeria ; Sokoto State ; freshwater environment ; Socioeconomic aspects ; Aquaculture ; Aquaculture development
    Repository Name: AquaDocs
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  • 57
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    Use of baobab pulp as a source of vitamin C in the diet of Nile tilapia, Oreochromis niloticus fingerlings (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23277 | 19325 | 2018-03-28 15:50:01 | 23277 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Sixteen (16) weeks feeding trial in a randomized design with three replicates was conducted to study the response of 180 Oreochromis niloticus fingerlings to baobab pulp as a source of vitamin C. They were fed a basal diet without supplemental vitamin C in the first 2 weeks of conditioning to deplete some stored acrobate. Diets supplemented with 1008 mgascorbyl-2-monophosphate Mg2+ (AMP) kg-1 diet (diet 1); 84g baobab pulp kg-1 (diet 2) and 168g baobab pulp kg"1 diet (diet 3) were evaluated. There was no significant difference (P〉0.05) in terms of weight gain, feed efficiency ratio, protein efficiency ratio, specific growth rate and survival between the groups fed diets 1 and 3. There was a significant difference between the groups fed diet 2 and either of the other diets. Total ascorbate concentration of the liver was significantly (P〈0.05) higher in the groups fed diet 3. The crude protein content of the final fish was significantly (P〈0. 05) higher in the groups fed diet supplemented with AMP. Interestingly none of the groups exhibited the characteristic symptoms of vitamin C deficiency. The results of this experiment suggest that Oreochromis niloticus was able to obtain vitamin C from the baobab pulp and tend to recommend baobab pulp at a level not less than 168g kg-1 diet in the nutrition of Oreochromis niloticus based on the condition of this study.
    Description: Includes:- 3 tables.;1 fig.;19 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; freshwater environment ; Vitamin C ; Diets ; Feeding experiments
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  • 58
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    Carbohydrate utilization of Oreochromis niloticus (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23279 | 19325 | 2018-03-28 15:53:18 | 23279 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Oreochromis niloticus of mean weight 45.96~c0.06g were fed seven practical diets ranging from 8.77 to 33.77% carbohydrate in 56 days. Mean weight gain were not significantly different (P〉0.05) while mean daily gain and specific growth rate varied significantly (P〈0.05). The protein efficiency ratio did not follow any trend with the percentage protein fed. It was highest with fish fed 46.3% and lowest with fish fed 51.2%. There was no significant variation in the food conversion ratio. The results indicated that O. niloticus utilized 25.28% carbohydrate optimally among the diets fed. The requirement of the fish for carbohydrate in diet is 30%.
    Description: Includes:- 3 tables.;2 figs.;19 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; freshwater environment ; Feeding experiments ; Nutrition ; Carbohydrates
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  • 59
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    Optimum temperature and stocking density for transportation of tilapia (Oreochromis niloticus) broodstock in the semi-arid zone of Nigeria (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23280 | 19325 | 2018-03-28 15:54:31 | 23280 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Oreochromis niloticus broodstock of mean weight 32.3g were cropped in the morning with dragnet from a 1 ha reservoir and transported in round tanks to the Hatchery complex of the National Institute for Freshwater Fisheries Research where they were stocked into 5m x 5m indoor concrete tanks filled with clean water and with aerators at a density of 4 fish/m1. They were acclimated for 5 days and then packaged into 60 liter capacity water proof bags at the following stocking densities: 60, 80, 100, 120, 140 fish/60 lit bag. Each stocking density had bags with ice blocks and bags without ice blocks in triplicate. The water proof bags were oxygenated, loaded into quick fitting plastic bowls and transported in a bus from New Bussa to Warra, Kebbi state, a journey of 3 hours. The trip was repeated four times. Percentage survival in bags with ice block were 100%for stocking densities 60, 80, 100 fish/60 lit bag, 95.1%for 120 fish/60 lit bag and 84. 7%for 1-10 fish/60 lit bag (mean temperature 23.5~?C). Mortalities were recorded in all the bags without ice block but the highest survival was in the bag with stocking density 60fish/60 lit bag (mean temperature 29.2~?C).
    Description: includes:- 3 tables.;6 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; freshwater environment ; Stocking density ; Transportation ; Fish culture
    Repository Name: AquaDocs
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  • 60
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    Clinical changes observed in Clarias gariepinus (Burchell 1822) fed varying levels of ascorbic acid supplemented diets (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23328 | 19325 | 2018-04-06 16:06:27 | 23328 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study was undertaken to observe the clinical changes associated with the dietary ascorbic acid supplementation in the diet of African catfish, Clarias gariepinus, using the presence or absence of scorbutic (ascorbic acid deficiency) symptoms as indices. Clarias gariepinus fingerlings (6.02~c 04g) were randomly distributed into glass tanks of 60 x 45 x 45cm3 dimension at ten fish per tank in a triplicate treatment. Five diets containing 40% crude protein was formulated. Ascorbic acid (AA) was supplemented in the diets as ascorbyl-2-polyphosphate (a mixture of phosphate esters of ascorbate). Each treatment had varying levels of ascorbic acid (AA) supplementation, at 0 (Control) 50, 100, 150 and 200mg AA/kg, in Treatments 1, 2, 3, 4 and 5 respectively. Fish were fed practical diets twice daily at 900hrs and 1600hrs. Weekly weighing of fish was done and data collected were subjected to statistical analysis. At the end of week 4, fish fed scorbutic diets (diets without Ascorbic acid) had significantly lower weight than fish fed AA supplemented diets (P〈0.05). After week 6, fish fed scorbutic diet began to develop clinical symptoms including lordosis (lateral curvature), broken skull, pigmentation and scoliosis (vertical curvature). Radiographs confirmed defects in the vertebral columns of fish in this treatment. Highest mortality was recorded in this treatment as 30%, In all parameters considered, treatment 4 fed 150mg AA/kg gave the best AA supplementation that prevented growth reduction and clinical signs of AA deficiency.
    Description: Includes:-3 tables.;11 plates.;17 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Feeding experiments ; Fish culture
    Repository Name: AquaDocs
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  • 61
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    Investment and employment potentials in fish farming in Nigeria (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23330 | 19325 | 2018-04-06 16:09:38 | 23330 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Investment opportunities in aquaculture that could lead to creation of employment in Nigeria was reviewed. Nigeria is a large fish consuming nation with the resource capacity to produce large quantity of fish for the country. The level of unemployment rate is increasing at an alarming rate. Employment opportunities in Agriculture sectors, in the area of Aquaculture deals with several sub sectors such as; seed production, transportation of live fish ,Water quality management, ornamental fish industries, supplies to aquaculture equipment and tools, aquaculture extension service, fish feed, fish meal production, fish processing, integrated rice-cum fish culture, and fish farm labor. These are all investment opportunities that can reduce unemployment, increase food security and poverty alleviation In Nigeria.
    Description: Includes:- 11 refs.
    Keywords: Aquaculture ; Nigeria ; freshwater environment ; Fish culture ; Investments
    Repository Name: AquaDocs
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  • 62
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    Evaluations off heavy metals in fish from Lake Geriyo Yola, Nigeria using x-ray fluorescence technique (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23338 | 19325 | 2018-04-07 17:17:18 | 23338 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The evaluation of Cr. Cu, Mn, Fe, Ni, Zn,As and Pb concentrations in Clarias gariepinus and Oreochromis niloticus from Lake Geriyo Yola,Adamawa, Nigeria using X - ray fluorescence (XRF) technique is discussed. The analytical samples are irradiated with high energy electrons of 109Cd to produce fluorescent X-rays was produced which passes to the Silicon-lithium detector through Mo target as a source of monochromatic X-rays. The spectrum of energy generated on the detector was processed by a Multi- Channel Analyzer to obtain analytical data. The intensity of the fluorescent X-rays on the detector is proportional to the concentration of the individual element of interest in the sample. This method can identify up to 30 or more elements at the same time. The results showed varying levels of heavy metals in the fishes. The concentrations of Cr, Mn, Cu, and Ni in the fishes were much higher than WHO and PEPA maximum permissible limits, while the concentrations of Zn and Pb were lower than the standards. The results suggest that the lake is polluted with Cr, Mn, Cu and Ni and the consumption of fishes of the lake is life threatening to man.
    Description: Includes:- 1table.;11 refs.
    Keywords: Ecology ; Chemistry ; Pollution ; Clarias gariepinus ; Oreochromis niloticus ; Nigeria ; Geriyo L. ; freshwater environment ; Heavy metals ; Fish ; X-ray fluorescence analysis ; Pollution ; Pollution effects
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    Production of earthworm meal for aquaculture (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23339 | 19325 | 2018-04-07 17:18:23 | 23339 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Three soil sample media (loamy, sandy and clayey) were used to culture earthworm, (Eudrilus eugeniae (Kinberg) in earthenware pots for ten weeks, under laboratory conditions. The aims of the research are to culture earthworms as replacement for fish meal, and to determine the best suitable soil medium for culturing and breeding of earthworms. Two sets of treatments were set up with the three soil samples; the experimental containing organic matter (cow dung) and the controls lacking organic matter. Watering was done every three days to keep the culture moistened. but not saturated. Results of the study showed that loamy soil had the highest number of earthworms harvested, followed by sandy and then clayey soil. Increase in number of harvested earthworms between the experimental and control groups differ significantly (P〈 O.05), with the experimental group having higher number of harvested earthworms. Loamy soil was the most favourable medium that enhanced the growth and survival of earthworms, when cultured under laboratory conditions, for fish meal replacement in aquaculture.
    Description: Includes:- 1 table.;2 figs.;10 refs.
    Keywords: Aquaculture ; Eudrilus eugeniae ; Nigeria ; Zaria ; Earthworm culture ; freshwater environment ; Aquaculture ; Breeding ; Cultured organisms
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    Status of fisheries and aquaculture development in Ekiti State, Nigeria (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23340 | 19325 | 2018-04-07 17:19:26 | 23340 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Ekiti State has limited water surface area but blessed with some rivers and seven big reservoirs on which some artisanal fishery is being carried out by over 400 fisher folks. Fish farming in Ekiti state is largely dominated by Clarias gariepinus culture. Interest in fish farming is on the increase as farmers construct concrete fish tanks as small as 1.5m2 as well as series of contour earthen ponds or tanks as big as 30m2. The total number of ponds has grown numerically from 96 at the inception of the state in 1996 to about 2000 in 2008. The move towards private/public partnership in aquaculture development will improve the economic and nutritional status of the region.
    Description: Includes:- 1 table.;3 figs.;5 refs.
    Keywords: Aquaculture ; Fisheries ; Nigeria ; Ekiti State ; freshwater environment ; Fish culture ; Freshwater aquaculture ; Aquaculture ; Artisanal fishing ; Fishery development ; Stock assessment
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    Nutritional value of mango (Mangifera indica) seeds and peels (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23344 | 19325 | 2018-04-08 11:33:10 | 23344 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The nutritional value of peels and' ~eds' 9f Mango, Mangifera indica was studied by analyzing collected samples of these non conventional feedstuffs for their proximate composition. The result of the analysis shows that moisture ranged from 9.70 to 10.48% (peels) and 9.50 to 10.48% (seeds). Protein ranged from 4.08 to 4.49% (peels) and 5.38 to 8.10% (seeds). Carbohydrate was 49.35 to 62.45% (peels) and 53.64 to 70.58%' (seeds). Fat ranged from 3.98 to 6.30% (peels) and 8.30 to 12.80% (seeds. Ash content ranged from 2.20 to 4.98% (peels) and 2.00 to 3.70% (seeds). The values for the proximate parameters of the peels and seeds were comparable to values reported for other non convectional feedstuffs. The seeds of ti1'ango had higher values than peels.
    Description: Includes:- 3 tables.;1 fig.;20 refs.
    Keywords: Aquaculture ; Nigeria ; Mango ; freshwater environment ; Nutritive value ; Carbohydrates ; Chemical composition ; Feed composition ; Chemical analysis
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    Vocational training of Nigeria unemployed youths in Northeast Nigeria as fish farmers: a means of ensuring food security (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23350 | 19325 | 2018-04-08 11:52:47 | 23350 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Vocational training for unemployed youths as fish farmers plays an important role in meeting fish protein need of Nigeria, contributing immensely to the national economy by providing nutritious food for the populace, creating jobs and enhancing national health and wealth. Youths are the leaders of tomorrow thereby their contribution towards food security is important. The study considered their opinion on the training based on skills acquired during a-6-week intensive vocational training. Results show that most trainees (97.03%) are within the economically active age group of 20-39years. Most trainees were confident that the programme will ensure food abundance and have a great impact on national economy. They also considered the training helpful and not only to their immediate families but also to the country at large. Skills were acquired in 8 various enterprises of fisheries but most trainees (43.56%) show greatest interest in fish fingerlings production through induced breeding, a situation that could boost aquaculture in Nigeria in few years to come. According to the trainees, the programme is laudable, and came at the right time when Nigeria is agitating to be put among the economically developed nations. However, youths exercise fear over inconsistency that could impede the progress of the programme. Recommendations are made on how to ensure better food security through a laudable programme of this nature.
    Description: Includes:-8 tables.;4 refs.
    Keywords: Aquaculture ; Information Management ; Nigeria ; Vocational Training ; Extension Services ; freshwater environment ; Training
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    Sustainable production of mangrove oyster Crassostrea gasar (Adanson, 1757) in Rivers State, Nigeria (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23356 | 19325 | 2018-04-08 12:07:41 | 23356 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The mangrove oyster, Crassostrea gasar inhabits the estuarine/coastal mangrove swampland of the Niger Delta. It can be found in the wild attached permanently to mangrove trees and any other hard substrate in the water. It thrives well in brackish water with a wide salinity and temperature range. The oyster has a high economic value and is accepted both locally as food. The table sized mangrove oysters sold in markets in Rivers State are from the wild. The culture potential of the oyster is yet to be explored in the State; despite the fact that details of culture techniques for the mangrove oyster have been fully documented by scientists at the African Regional Aquaculture Central Nigerian Institute for Oceanography and Marine Research, (ARACINIOMR). This paper highlights techniques for the production of table sized oyster and environmental issues that could affect long term sustainable oyster farming.
    Description: Includes:- 10 refs.
    Keywords: Aquaculture ; Crassostrea gasar ; Nigeria ; freshwater environment ; Mangroves ; Oyster culture ; Oyster fisheries
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    Growth and survival of different sex combinations of Oreochromis niloticus (L) in glass tanks (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23354 | 19325 | 2018-04-08 12:03:29 | 23354 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Growth performance and survival rates of three different sexes of Oreochromis niloticus fingerlings (27.5~c 0.02g); mixed-sex, all male and all female fed 35% CP at 5% body weight was carried out for 56 days in indoor rearing operations. Aquaria tanks (60x30x 30cm3) were used as rearing tanks and each treatment was replicated. All female tilapia had the best specific growth rate (2.54%/day), food conversion ratio (1.98) as well as survival rate (98%), least value was obtained in treatment containing the mixed sex tilapia. Specific growth rate (2.06%/day), Food conversion ratio (2.27) and survival rate (95% ).
    Description: Includes:-2 tables.;1 fig.;7refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; New Bussa ; freshwater environment ; Survival ; Sex ratio ; Food conversion ; Fish culture ; Feeding experiments
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    Opportunities for shrimp farming in the Niger Delta: dilemma of sustainable production in the absence of regulatory framework (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23357 | 19325 | 2018-04-08 12:09:40 | 23357 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Commercial shrimp farming has been practised for several decades in many countries of the world over. High demand for shrimps and corresponding high returns on investment has played major roles in the expansion of the industry. In Nigeria, farming shrimps is still novel. Notable research work includes studies conducted at the Nigerian Institute for Oceanography and Marine Research, African Regional Aquaculture Centre and Institute of Oceanography, University of Calabar. Niger Delta has potentials for farming shrimps - suitable sites, good candidate shrimp species, high local demand with potentials for export. However the major challenge would be the availability of guidelines to regulate farming activities especially as concerns the use of potentially toxic compounds in shrimp farms which could lead to deleterious effects in the environment. Efficient regulatory bodies/agencies to ensure sustainability of production system and compliance to stipulated guidelines will go a long way in the protection of the environment.
    Description: Includes:- 2 tables.;15 refs.
    Keywords: Aquaculture ; Nigeria ; Niger Delta ; freshwater environment ; Shrimp culture ; Shrimp fisheries
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    Toxicity of promethazine hydrochloride (Phenergan) to Clarias gariepinus fingerlings (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23360 | 19325 | 2018-04-08 17:55:59 | 23360 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The acute toxicity of promethazine hydrochloride (phenergan) to Clarias gariepinus fingerlings was conducted using static bioassay under laboratory conditions. The 96h LC50 was determined as 172.5 mg/1. Mean mortality was 5, 10, 20, 50, 100% in the concentration of 69, 103.5, 138.0, 172.5 and 207 mg/1 respectively, while there was no mortality in the control treatment. There were significant differences (P〈0.05) on the effect of concentration, the higher the mortality of C. gariepinus fingerlings while toxicity of phenergan increased with duration of exposure. C. gariepinus showed increased hyperactivities, cell deformation, lesions and necrosis during the period of exposure. The physicochemical parameters also showed a slight increase as the concentration increased.
    Description: Includes:- 2 tables.;9 refs.
    Keywords: Aquaculture ; Ecology ; Pollution ; Clarias gariepinus ; Nigeria ; stress ; freshwater environment ; Toxicology ; Histopathology ; Biological stress
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    Fisheries and aquaculture development in Nigeria: an appraisal (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23366 | 19325 | 2018-04-08 18:05:14 | 23366 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Nigeria has a coastline of 853km and over 14 million hectares of inland waters and thus owns significant fisheries. The contribution of fisheries to the Nigerian economy is significant in terms of supply of high quality dietary protein, income generation, creation of employment and enhanced inflow of foreign exchange earnings through shrimp export. However, due over-exploitation of the natural resources, by-catch and discard problem, inadequate infrastructure and social amenities development, inadequate supply of fish feed, fish seeds and slow adoption of new technology and management strategies etc. The domestic fish production (0.55 million tons) has fallen short of the demand (1.5million metric tons). Aquaculture development is the solution to the unpredictable production through capture or artisanal/industrial fisheries.
    Description: Includes:- 21 refs.
    Keywords: Aquaculture ; Fisheries ; Nigeria ; freshwater environment ; Aquaculture ; Brackishwater aquaculture ; Freshwater aquaculture ; Marine aquaculture ; Aquaculture development ; Fishery development
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    Efficacy of formalin in the removal of adhesiveness from Clarias gariepinus eggs during artificial propagation (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23358 | 19325 | 2018-04-08 12:11:51 | 23358 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The aim of this study was to establish the efficacy of formalin in removing the adhesiveness of Clarias gariepinus eggs during artificial propagation and the effects on prospective fry. 1g of catfish eggs were put in five concentrations of formalin \{O.O (control), 0.4, 0.6, 0.8 and 1.0 mg/l\} at three exposure times (10, 15 or 20min). In each treatment, the detachment of eggs increases with exposure time but were not significantly different (P〉O.05). 0.4mg/1 of formalin had the highest number of detached eggs. At the highest formalin concentration 72% of the eggs still adhered together which provide a good substrate for the growth of fungi. The use of formalin delayed hatching of C. gariepinus eggs when compared with the control. The more the exposure period of C. gariepinus eggs to formalin, the higher the hatching time. Survival of fry was highest in the group that has been exposed to 0.4mg/1 and exposure period of l0min. At the highest concentration (1.0mg/l) and exposure period (20min), the survival was lower by 55.5%. Based on this study, the optimum concentration of formalin was O.4mg/l and exposure period of l0min. for the removal of egg adhesiveness, increase hatching and improved survival success of C. gariepinus.
    Description: Includes:- 4 figs.;10 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Akure ; freshwater environment ; Preservatives ; Anticoagulants ; Coagulants ; Dispersants ; Fish culture
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    Gender issues in economics of fish farming in Maiduguri and environs (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23362 | 19325 | 2018-04-08 17:58:42 | 23362 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study focused and examined gender issues in economics of fish farming in Maiduguri and its environs. The socio-economic characteristics of the fish farmers were examined. The profitability of the industry and constrains affecting fish farming in the study area were analyzed. Stratified random sampling technique was used due to the heterogeneous nature of the population considering 30% of the fish farmers as the sampled size. Descriptive statistics and net farm income were used to analyse the data obtained. It was revealed that 81.25% of the respondents were male while female fish farmers represented 18.75% of the respondents. 84.40% of the respondents had tertiary education while farmers with secondary certificate and adult education constituted 12.50% and 3.10% respectively. Net farm income profitability analysis of male and female farmers were N193,767:00 and N445,557:00 respectively. It was also observed that the major constraints militating against fish farming in the study area were scarcity of fingerlings, lack of improved technology, inadequate capital, high cost of equipments, lack of land and management difficulties. It was recommended that adequate training, continuous capacity building and improved technology in fish production must be made available to farmers: and farmers should have access to sources of fingerlings.
    Description: Includes:- 3 tables.;2 refs.
    Keywords: Aquaculture ; Sociology ; Nigeria ; Maiduguri ; Women in Fisheries ; freshwater environment ; Sex ; Fish culture ; Women
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    Evaluation of Afzelia africana seeds as protein feedstuff in fish diets (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23368 | 19325 | 2018-04-08 18:08:23 | 23368 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-14
    Description: Seeds of the legume Afzelia africana were analyzed and evaluated for use as protein feedstuff in fish diets. The seeds were heated to inactivate the anti-nutritional factors. Two iso-nitrogenous diets (26%) were produced using A. africana or Bonga-fishmeal as protein sources and labeled FI and F2, respectively. The resulting pellets were sinking pellets and were well accepted by tilapia based on the reaction time to feed presence and proportion of pellets eaten within one hour. Fl pellets were more stable in water than F2 pellets with mean dissolution times of 190 mins and 135 mins, respectively
    Description: Includes:- 7 tables.;4 refs.
    Keywords: Aquaculture ; Nigeria ; freshwater environment ; Feeding experiments ; Feed composition ; Feed preparation ; Nutritional requirements ; Nutrition ; Fish culture
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    Survival and response of Oreochromis niloticus to different feeds (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23374 | 19325 | 2018-04-10 16:10:47 | 23374 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The study determined the survival and the response of Oreochromis niloticus to different feeding compositions. 90 Oreochromis niloticus juveniles were fed different diets in triplicated treatments inside glass tanks. Treatment I comprised locally compounded diet; Treatment II, imported pelletized feed; and Treatment III - processed feathermeal based diet. Results showed that there was no significant differences (P〉0.05) in the weight gain, feed intake, survival and feed conversion ratio. However, Treatment I had the highest feed intake, while treatment n had the highest weight gain and feed conversion ratio.
    Description: Includes:- 4 tables.;21 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; freshwater environment ; Feeding experiments ; Feed preparation ; Nutritional requirements ; Fish culture ; Survival
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    Genetic improvement of tilapia: challenges and prospects in Nigeria (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23373 | 19325 | 2018-04-10 16:09:38 | 23373 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The contribution of tilapia aquaculture in Nigeria to world output is negligible due to stunting, poor market value among others. This paper evaluates the aquacultural credentials of tilapia, some genetic improvement technology in cultured tilapia, namely, ploidy, hormonal sex reversal. transgenic, hybridization, and the necessity of Genetic Improvement in accelerating tilapia production in Nigeria. Investigation reveals the presence of O. niloticus with the highest growth perfermancc index (~h1=3.11) for Lake Kanji which indicates high growth potential in suitable culture environment and could serve as a good starting point for genetic development. The presence of ”wesafu”, an ecotype cichlid, endemic to Epe lagoon, Lagos, which grows to 1500g in the wild, appears to be an excellent candidate for genetic improvement of a commercial strain for the growing aquaculture industry. Tilapia Genetic improvement in Nigeria is faced with a number of setbacks. This includes short- term, scattered and disjointed funding, inadequate genetic research facilities, ecological risk, inadequate skilled manpower and poor documentation of tilapia genetic resources among others. Considering the growing importance of tilapia culture, the need to document, conserve, evaluate and utilize tilapia genetic resources is highlighted to enhance the success of food security in Nigeria.
    Description: Includes:- 3 tables.;26 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; Kainji L. ; freshwater environment ; Fish culture ; Genetics ; Selective breeding
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    Body-weight variations in four week old Clarias gariepinus (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23371 | 19325 | 2018-04-10 16:06:58 | 23371 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The variation in size and weight of fry and fingerlings of Clarias gariepinus has been a major factor affecting the success of hatchery production of the species. It encourages cannibalism, thus reducing the overall survival. The disparity in weight and population was assessed to determine the necessity of sorting as a reliable method of controlling size disparity and mortality in hatchery production. Two-week-old fry with average weight of 15mg and length range of 0.8-0.9cm were randomly sampled and stocked at 200 fry/litre in 30 litre circular tanks. The fish were fed for four weeks on 45% crude protein diet, ad libitum. At the end of four weeks, there were three groups; large, medium and small with mean weight of 4.02g, 1.24g and 0.17g, respectively. The cumulative mean weight was 1.8g, population ratio was 1:8:10 for large, medium and small, respectively.
    Description: Includes:- 1 fig.;10 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Fingerlings ; Fry ; Weight ; Survival ; Induced breeding
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    Aquaculture investment in Nigeria: a case study of New Bussa (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23377 | 19325 | 2018-04-10 16:16:41 | 23377 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Hunger and malnutrition have remained amongst the most devastating problems facing the majority of Nigerian poor. These challenges and other social and economic objectives are the main forces driving aquaculture development to augment for food deficient, in particular fish, which is the cheapest source of protein. However looking at the aquaculture potential and the demand for fish, more needs to be done in aquaculture sub-sector. Unfortunately, despite the increase awareness, many people still remain skeptical about returns in aquaculture investment. This backdrop prompted the study, which empirically analyzed the situation based on two (2) semi-concrete ponds at NIFFR. The results which were extrapolated for five years shows a cost benefit ratio of 1.8, which indicated worthy investment. The results would essentially serve as guide to practitioners and intended fish farmers
    Description: Includes:- 5 tables.;12 refs.
    Keywords: Aquaculture ; Nigeria ; New Bussa ; Cost Benefit analysis ; freshwater environment ; Aquaculture ; Aquaculture development ; Costs
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    An integrated chicken-fish system in concrete ponds (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23380 | 19325 | 2018-04-10 16:41:16 | 23380 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Four treatments (in duplicate) were used to detennine the optimum combination ratio in the chicken-fish integrated system in 4 m2 concrete ponds. Treatment I (TI) consisted of a concrete pond integrated with one point-of-lay chicken while treatment 2 (T2) had two point-of-Iay chickens integrated over a concrete pond. Treatment 3 (T3), consisted of three point-of-lay chickens integrated over a pond and treatment 4 (T4) was the control and involved no integration. Each concrete pond was stocked with a poly-culture of Oreochromis niloticus and Clarias gariepinus in a ratio of 3:1. Compounded fish feed was used to feed the fish in T4 twice daily at 5% of their body weight while fish in TI. T2 and T3 fed on wet chicken manure and spilled chicken feed that fell directly into the ponds. The daily manure loading rate ranged from 55.80g in TIR2 (treatment l replicate 2) to 117.37 g in T3RI while spilled feed loading rate ranged from 2.52 in T2R2 to 9.27g in T3R2. The total number of eggs laid was 871 in 84 days. For C. gariepinus, fish in T4RI had the highest mean weight gain of all the treatments and TIRI, the lowest. T3R2 had the highest mean weight gain of all the integrated treatments. For O. niloticus fingerlings, fish in T4 which were fed compounded feed had the highest mean daily weight gain and while those in T1 had the lowest. T4RI fish had the highest mean weight gain while TIR2 fish had the lowest. Fish in T3 had the highest mean weight gain of all the integrated treatments followed by fish in T2. However, physico-chemical parameters were more adverse and survival was lower in T3 than in T2 and so a combination ratio of 20 fingerlings in a 4 m2 concrete tank integrated with two laying chickens (mean weight 1.93 kg) is recommended. This translates to 50 laying chickens/100 m2 concrete pond stocked with 500 fingerlings.
    Description: Includes:- 3 tables.;Refs.
    Keywords: Aquaculture ; Nigeriaa ; New Bussa ; Rice-Fish- Culture ; Poultry-Fish-Culture ; freshwater environment ; Fish culture ; Rice field aquaculture ; Agropisciculture
    Repository Name: AquaDocs
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    Improved floating diets for African catfish and Nile tilapia (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23386 | 19325 | 2018-04-10 16:51:37 | 23386 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Flotation potentialities of diets bound with Polymethylo-cabarmide and other local starches and Saccharomyces cerevisiae floater were investigated in the laboratory. The binders and floater were fixed at 10 and 4% respectively in isonitrogenous 30% crude protein diets for catfish and Tilapia. Flotation were significantly (P〈0.05) highest (100.00 - 96.67%) in Polymethylo-cabarmide based binder. Wheat grains starch (WGS) was highest (p〉O.05) among the local agents in the first 10 minutes. Cassava tuber starch (CTS) significantly (P〈0.05) succeeded WGS from 15 minutes till end of immersion. The least effective was maize grain starch (MGS).
    Description: Includes:- 1 table.;1 fig.;19 refs.
    Keywords: Aquaculture ; Nigeria ; New Bussa ; Floating Fish Feed ; freshwater environment ; Feed ; Feed composition ; Feeding experiments ; Feeding ; Artificial feeding ; Nutrition
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    Efficiency of vocational training of Nigeria unemployed youths in Northeast Nigeria as fish farmers (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23349 | 19325 | 2018-04-08 11:49:52 | 23349 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Vocational training for unemployed youths plays an important role in solving the problem of unemployment in Nigeria, assisting the teeming unemployed youths to find their footing in society as responsible citizens and for wealth building and creation. Youths as participants are the major actors in appraising the vocational training. The study probed into the activities of these youths during their six weeks stay at the Federal College of Freshwater Fisheries Technology, Baga. Result shows that most trainees (81.19%) were within the age range of 20-29 years. 94.06% were males while 5.94% were females. Desires for self employment made these youths to participate in vocational training as many of them (51.49%) are in total unemployment while the rest are involving in menial jobs. Skills were acquired in 8 different fisheries enterprises and these include Fish production, fish processing technology, fish feed production technology, boat construction, aquarium construction, fish marketing, extension methods and fishing gear construction and maintenance. Most trainees (43.56%) preferred and show enthusiasm for fingerlings production through induced breeding. Trainees were from 41 local government areas in 7 states in the North-east Nigeria. Virtually all participants performed above average, a result that is encouraging if aquaculture must develop and solve unemployment problem. Vocational training has distortions that impede its efficiency.
    Description: Includes:- 5 tables.;4 refs.
    Keywords: Aquaculture ; Information Management ; Nigeria ; Vocational Training ; freshwater environment ; Training
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    Bioaccumulation and carbohydrate levels of Tilapia zillii exposed to sublethal concentrations of lead and copper (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23353 | 19325 | 2018-04-08 12:01:37 | 23353 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Tilapia zilili is a commonly cultured fresh water fish and of major economic importance in tropical and subtropical countries throughout the world. Effect of the sub lethal concentrations of copper and lead to T. zillii for 12-week exposure period was carried out. The elements were assayed using Shimadzu AA 6200 atomic absorption spectrophotometery and the results were given as ~k/g dry wt.The bioaccumulation factors of lead and copper were significantly (P〈0.05) higher in treated fishes than the control. Effect of these metals on the quantitative carbohydrate levels in the plasma, muscle and liver were observed. The different concentrations of the various heavy metals caused significantly (p〈0.05) corresponding decrease in the fish muscles and liver glycogen levels.
    Description: Includes:- 1 table.;2 figs.;8 refs.
    Keywords: Aquaculture ; Health ; Pollution ; Tilapia zillii ; Nigeria ; freshwater environment ; Bioaccumulation ; Pollution effects ; Sublethal effects ; Toxicity tolerance ; Copper ; Heavy metals ; Lead
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  • 83
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    Utilization and growth response of Clarias gariepinus fingerlings fed varying inclusion levels of livestock vitamin grower´s premix (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23365 | 19325 | 2018-04-08 18:04:12 | 23365 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A 70 day experiment was conducted to determine the correct level of inclusion of livestock vitamin premix in the diet of Clarias gariepinus fingerlings and to monitor the utilization efficiency and growth performance of the test fish. 180 fngerlings of C. gariepinus were randomly distributed to six treatments, each weighing 0.76 ~c 0.05g. Thirty fingerlings per treatment were used. Each treatment had varying levels of livestock vitamin premix except the control that had no additional vitamin premix. Weighings of fish were done weekly and feed adjusted accordingly. The data collected were subjected statistically to descriptive and analysis of variance. All the treatments were significantly different from each other and also from the control at (P 〈 0.05). The highest mean weight gain was recorded in treatment 5 (0.910) which had 2% premix inclusion. The carcass analysis showed Ts with the highest crude protein level (64.43%). The highest daily and weekly mean weight gain were recorded in treatment 5; O.013g and 0.130g respectively. The feed conversion ratio (FCR) was lowest in T1, (2.147). The FCR for T5 (2.535) was insignificantly different (P 〈 0.05) from T1,. The fish feed control had the best FCR. T5 had the best utilization and growth performance when the average weight gain and the carcass crude protein composition and energy were compared. The fat deposited in fingerlings fed T5 were moderately (5.63) lower than treatment 6 with 5.86. It can be concluded that the fish fed treatment 5 will be less fatty than fish fed treatment 6 but more fatty than the fish fed the controls.
    Description: Includes:- 5 tables.;12 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Feeding experiments ; Feed composition ; Feed preparation ; Fish culture ; Vitamins
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    Evaluation of Nile tilapia (Oreochromis niloticus L.) fed dietary potato peels as replacement for yellow maize (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23361 | 19325 | 2018-04-08 17:57:30 | 23361 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The recent increase in the numbers of fast food vendors in Akure means that large quantities of Irish potato peels will be generated and discarded with high propensity for causing environmental pollution. Also the prize of maize in Akure has increased by about 31 % between January and August 2009. Therefore, the present study evaluated the bio-economic use of Irish potato peels in Nile tilapia diets with a view to achieving environmentally friendly and cost effective fish production. Nile tilapia (29.4 ~c 1.40g) was fed five diets (01-05) in glass tanks for 56 days. The basal diet (01) contained 26% yellow maize and 35% CPO Then the yellow maize in diets 02-05 was replaced with potato peels at 10, 20, 30 and 40% respectively. At the end of the experiment, growth of the fish was statistically the same in all treatments. However, fish fed 03 and 04 showed uniform and best potentials while the fish fed 05 had the worst performance indicating 30% replacement as the optimum. Economic estimation showed that lkg diet costs about (N81.6-N103.6) depending on the level of potato peels inclusion in the diets while (1.12-1.67kg) of fish was produced from each treatment with 85-95% survival rate of the fish. Incidence of cost (IC) showed marginal variations among the treatments with 30% replacement having the least and 40% replacement the highest costs of fish production. 40% replacement had the highest IC because of high mortality (15%) and poor growth of fish under the treatment. Similarly, the profit index (PI) was closely related with 30% replacement having the highest profit margin. In conclusion, both growth and economic indices established that Irish potato peels can replace up to 30% of yellow maize in diets of Nile tilapia
    Description: Includes:- 4 tables.;7 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; Akure ; Fish nutrition ; freshwater environment ; Feeding experiments ; Feed efficiency ; Fish culture ; Nutrition
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    Effects of feed colour on growth and nutrient utilization of Tilapia zillii (Gervais 1852) (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23363 | 19325 | 2018-04-08 17:59:50 | 23363 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A feeding trial was conducted for 75 days to determine the effects of feed colours on nutrient utilization and growth in Tilapia zillii fingerlings. Four different food colourant \{Food Drug and Cosmetic (FD and C) colour red, blue, green and yellow\} was added to a basal diet 350g crude protein and 18.5MJ gross energy/kg diet and fed to T. zillii. There were five diets in all, the control (normal light brown commercial diet) (Diet 1), red-coloured diet (Diet 2), and blue-coloured diet( Diet 3), green-coloured diet(Diet 4) and yellow-coloured diet (Diet 5) and fed to triplicate groups of T. zillii at 4% body weight. Ten (10) T. zillii (14.00:t 0.003g) fingerlings were stocked in each concrete tank making a total of 150 fingerlings. The growth performance of the fish fed the yellow-coloured diet (Diet 5) had the best growth performance and nutrient utilization with Feed conversion ratio (FCR) and Specific growth rate (SGR) of 0.031:t0.80 and 1.17:t0.On respectively, this was followed by fish fed green-coloured diet, followed by fish fed red-coloured diet, followed by the fish fed the control diet (normal light brown commercial diet) and lastly, the fish fed blue-coloured diet had the least growth performance.
    Description: Includes:- 2 tables.;1 fig.;1 plate.;11 refs.
    Keywords: Aquaculture ; Tilapia zillii ; Nigeria ; freshwater environment ; Feeding experiments ; Experimental culture ; Feed efficiency ; Fish culture
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    Water parameters in Ilaje Local Government Area Ondo State (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23364 | 19325 | 2018-04-08 18:02:40 | 23364 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Ilaje Local Government Area of Ondo State is blessed with many rivers, lagoons, tributaries lakes and a very long coastline, of about 180km making the State as a coastal state with the longest coastline in Nigeria. The people are predominantly fishermen. The fish produced from this area could be further boosted through farming of fish especially in cages along the available creeks at not much cost to the inhabitants. This study shows that the waters of the area were found optimal for fish production. This further buttressed by the fact that the area has been an active zone of fish production for ages. This historical perspective is been considered as the baseline in the study for perpetuating the culture of fish and other aquaculture species in the area
    Description: Includes:- 7 refs.
    Keywords: Aquaculture ; Limnology ; Nigeria ; Ilaje ; freshwater environment ; Fish culture ; Cage culture
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    Gut microflora of cultured and captured Clarias gariepinus (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23367 | 19325 | 2018-04-08 18:06:45 | 23367 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The diversity and microbial load of the micro flora inhabiting the gut sections of captured and the cultured Clarias gariepinus were investigated. The gut contents of the fish were isolated and characterized using standard method. The results of the characterization revealed the presence of bacteria and fungi in the guts of the fish. The bacteria isolated from the captured fish were Escherichia coli, Proteus vulgaris, Klebsiella mobilis, Enterobacter spp, Shigella spp, and Micrococcus varians while Citrobacter spp, Proteus vulgaris, Enterobacter spp, Escherichia coli, Serratia marcescens and Shigella spp were isolated from the cultured fish.. The fungi isolates found in the gut of the captured fish included, Penicillium chrysogenum, Fusarium spp and Rhizopus stolonifer while Aspergillus flavus, Candida albicans and Aspergillus fumigates were isolated in the cultured fish. The bacteria count obtained from the fore gut, mid gut and hind gut of the captured fish were; 1.4 x 1O-~B cfu/g, 1.7 x 1O-~B cfu/g and 2.7 x 1O-~B cfu/g while that of cultured fish had 2.8 x 10-~B cfu/g, 2.05 x 10-~Bcfu/g and 2.65 x 10-~Bcfu/g respectively. The spore count of the fungi isolated from the fore gut, mid gut and hind gut of captured fish ranged between 4.0 x 10-~B spore/g and 9.0 x 1O-~B spore/g while the count obtained from the cultured fish ranged between 3.0 x 10-~B and 9.05 x 1O-~B spore/g. The hind gut had the highest number of species and microbial load in both captured and cultured fish than the other region. Though, there was significant difference (P0.05). The results therefore suggest that there is diversity in microbial composition and microbial load in different sections of the gut of cultured and captured fish which may reflect of the environment where they were raised.
    Description: Includes:- 5 tables.;40 refs.
    Keywords: Ecology ; Aquaculture ; Nigeria ; freshwater environment ; Stomach content ; Microbiological analysis ; Microorganisms ; Cultured organisms ; Aquaculture ; Parasitic diseases
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    Fish health management: from challenge to opportunity (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23423 | 19325 | 2018-04-25 19:26:43 | 23423 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Aquatic animal diseases are the most significant constraint to the development and management of aquaculture worldwide. As aquaculture is growing rapidly and poised to help in bridging the gap in the global supply and demand of aquatic animal food products, management of health is gaining priority. There is need to improve the standards and have strict quarantine laws, this is a powerful selling point and provides our industry with a distinct competitive advantage. The basis for such legislations is very logical and simple
    Description: includes:- 2 tables;11 refs.
    Keywords: Aquaculture ; Nigeria ; freshwater environment ; Public health ; Fish diseases ; Parasitic diseases
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  • 89
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    Effects of salinity on larval dimension of Tilapia guineensis (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23422 | 19325 | 2018-04-25 19:24:46 | 23422 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Tilapia guineensis eggs were spawned and hatched in different salinities (17, 12, 7, 5, 2 and 0) ppt. The study was conducted in eight replicates. The aim of the investigation was to ascertain disparity in hatching size of Tilapia guineensis attributable to salinity. Immediately hatching was observed, body weight of five hatchlings in each replicate was individually weighed in milligramme. The individual total length of the five hatchlings was also measured in millimeter. The height of the yolk sac larva was determined with micro-metre screw gauge graduated in millimeter from the top of the yolk sac to the dorsal region of the larva. Data obtained were used to calculate yolk sac volume. Significant differences (P〈0.01) were observed in body weight and total length of larvae hatched in different salinities. The heaviest and longest larvae were hatched in 12 ppt saline water. The yolk sac volume of larvae hatched in lower salinities were significantly higher (P〈0.01) than the yolk sac volume of larvae hatched in higher salinities. The smallest yolk sac volume was recorded in 12ppt saline water. Our findings show that salinity could be manipulated for economic production of heavier seeds of Tilapia.
    Description: Includes:- 5 tables.;6 refs.
    Keywords: Aquaculture ; Chemistry ; Tilapia guineensis ; Nigeria ; brackishwater environment ; Salinity effects ; Larvae
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  • 90
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    Challenges of fish farmers in Ondo State, Nigeria (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23384 | 19325 | 2018-04-10 16:48:49 | 23384 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study assessed fish farmers in Ondo State, south west agro-ecological zone of Nigeria using a sample size of 100 respondents, selected through a multi-stage sampling technique. Instrument for data collection was semi-structured questionnaire. Data were analysed using frequency counts and % of the respondents. Results showed that majority (52.0%) of the respondents are middle aged, 95.0% male, 93.0% married with a higher education (45.0%). The most important fisheries technology adopted by the farmers is disease control management. 67% indicated lack of finance and high cost of fish seed (58.0%) as the most important problems encountered. It was recommended that adequate incentive and grants should be given to farmers to finance fish production.
    Description: Includes:- 1 table.;1 fig.;11 refs.
    Keywords: Aquaculture ; Nigeria ; Ondo State ; freshwater environment ; Fish culture ; Freshwater aquaculture ; Sociological aspects ; Socioeconomic aspects
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  • 91
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    Effects of supplemental selenium in diets of Heterobranchus longifilis (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23381 | 19325 | 2018-04-10 16:42:29 | 23381 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The effect of selenium supplementation into diets of Heterobranchus longifilis fingerlings was investigated using a completely randomized design with triplicates in a mini-flow through experimental system. 245 fingerlings (mean wt., 1.5~c0.23g) were stocked and fed either normal (Basal) diet (Control group) or diets supplemented with 0.16, 0.24, 0.32 or 0.64 mg sodium selenite Kg-I Selenium addition to the diets and fed to the fish caused a significant increase (P〈0.05) in weight gain and fingerlings growth rate was accelerated by 18-22% compared to 17-18% in the control group. There were significant differences (P〈0.05) in survival rate between treatments, indicating that diets are likely to be responsible for increased survival rate, observed in fish fed diets supplemented with 0.24 and 0.32 mg Na2 Se03 5H2O kg-1 diet. Results indicated that a diet supplemented with, 0.24 and 0.32 mg of sodium selenite Kg-1 diet is important for growth and survival of H. longifilis fingerlings.
    Description: Includes:- 3 tables.;18 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; New Bussa ; freshwater environment ; Feeding experiments ; Experimental culture ; Nutritional requirements ; Diets ; Selenium
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  • 92
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    Control of reproduction in Oreochromis niloticus using pawpaw seed meal as reproduction inhibitor (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23408 | 19325 | 2018-04-12 09:01:23 | 23408 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Pawpaw (Carica papaya) seed meal (PSM) was added to a basal diet (350g crude protein and 18.5MJ gross energy lkg diet) at 0, 0.5, 1.0, 1.5 or 2.0 g/kg diets and fed to mixed-sex Oreochromis niloticus for 60 days to evaluate the effects on growth, feed conversion ratio, reproduction traits, and histology of gonads. There were no variations (P〉0.05) in growth parameters and feed conversion ratio. Indices of reproduction traits decreased with increasing dietary PSM levels. Fish fed with the basal diet had higher and better indices of reproduction traits (P〈0.05) than the fish fed with PSM diets. Fish fed O.0g PSMlkg diet showed normal testicular and ovarian tissues, and no lesions were observed. Fish fed O.5g PSMlkg diet showed slight increase in interstitial cells in testes. Fish fed 1.0g PSMlkg diet showed swollen spermatids nuclei, increased interstitial cells and focal necrosis in testes; and hydropic degeneration, ruptured follicles, granulomatous inflammation in the insterstitium and necrosis in ovaries. Fish fed 1.5g PSMlkg diet exhibited atrophy of seminiferous tubules in testes. Fish fed 2.0g PSMlkg diet, there was disintegration of spermatids and necrosis in testes and severe atretic follicles in ovaries. Reproduction traits and histological observations of gonads in O. niloticus fed high dietary PSM levels revealed that pawpaw seeds may be effective as a reproduction inhibitor in O. niloticus.
    Description: Includes:- 4 tables.;23 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; freshwater environment ; Feeding experiments ; Experimental culture ; Nutritional requirements ; Fish culture
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    Potentials of poultry offals in African catfish diets (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23407 | 19325 | 2018-04-12 09:00:06 | 23407 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A 70-day feeding trial was conducted to test the effect of partial replacement of fishmeal by poultry offal in African catfish Clarias gariepinus diets. Four isonitrogenous ration containing various levels (0%, control), 30%, 60% and 90% of poultry offal were fed to three replicate groups of C.gariepinus fingerlings with a mean initial weight of 0.74~c 0.15 g. 10 fish/plastic bowl were tested in 15 I capacity plastic bowl. Mean weight gain of the fingerlings fed the control were higher (2.43~c 0.12g) compared to fish fed 30%, 60% and 90% poultry offal inclusion of Hsh meal (1.99~c 0.08g, 1.84~c0.06g and 1.14~c 0.20g, respectively), but there was no significance difference (P~〈 0.05) in weight gain of fish. There was no significant variation in feed conversion ratios which varied between 0.46~c 0.12 and 0.53~c 0.20 for the control and 90% poultry offal respectively, obtained among the groups. Similarly, specific growth rate and protein efficiency ratio decreased as the level of poultry offal increased in the diet. It was concluded that the replacement of fish meal with chicken offal meal diet at 30% level will enhance growth performance of Clarias gariepinus
    Description: Includes:-4 tables.;9 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Ibadan ; freshwater environment ; Feeding experiments ; Experimental culture ; Feed preparation ; Nutritional requirements ; Fish culture
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  • 94
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    Design and construction of electronic security system for aquaculture water-recirculatory system (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23414 | 19325 | 2018-04-12 09:08:55 | 23414 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Electronic play a vital role in providing security. A security alarm system was designed and constructed to safeguard aquaculture water recirculatory system against illegal entry. The system involved a laser touch which is easily available and it is used for the operation of the device. The laser beam is directed across the entrance to the water recirculatory system, falling on a light dependent resistor (L.D.R). Any unwanted interruption of the laser beam would result into energization of the alarm and indicating security danger. A prototype water recirculatory system was constructed and interfaced with the devices and the device was found efficient and reliable.
    Description: Includes:- 2 tables;1 fig.;4 refs.
    Keywords: Aquaculture ; Nigeria ; freshwater environment ; Electronic equipment ; Security ; Defence craft ; Fish culture
    Repository Name: AquaDocs
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    Preliminary studies on the culture of Atya crassa in outdoor and indoor tanks (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23415 | 19325 | 2018-04-09 17:38:44 | 23415 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A. crassa of sizes ranging 7.05~c 0.13g to 8.5~c 0.05g were purchased from fishermen around the Jebba Lake. They were transported in open jerry cans in a cold van for about two hours. The indoor tanks measured 3m x 2m x 1.5m while the out door tanks were 2m x 2m x 1.5m. The indoor tanks were stocked 17 prawns per tank while the outdoor tanks were stocked 10 prawns per tank. The experimental diets were formulated with crude protein levels 30%, 35% and 40%. The ingredients used were fishmeal, palm kernel cake, guinea corn, starch, calcium carbonate and these were fortified with premixes. Each diet was assigned to two tanks each indoors and outdoors. They were fed twice daily (9hrs and 19hrs) for 184 days. Positive growth was observed in both indoor and outdoor tanks. There was no significant difference in the growth of prawns fed outdoor (P〉0.05). There was significant difference in the growth parameters of prawns fed the varying diets indoors. The percentage survival of prawns was higher outdoors and there was no significant difference (P〉0.05) in the survival recorded in the three treatments. There was significant difference (P〈0.05) in the survival of prawns in indoor tanks. The carcass composition of A. crassa fed the three diets show crude protein lower at harvest than the prawns stocked initially. Percentage lipid, ash and fibre of the harvested prawns were higher than at initial stocking. A. crassa is cultivable in freshwater and it should be reared with 30% crude protein diet in outdoor systems. Attempts should be made in the larval rearing of the species.
    Description: Includes:- 3 tables.;1 fig.;14 refss.
    Keywords: Aquaculture ; Atya crassa ; Nigeria ; Jebba L. ; freshwater environment ; Feeding experiments ; Experimental culture ; Feed efficiency ; Nutritional requirements ; Shrimp culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Appraising three (3) decades of aquacultural development in Imo state (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23420 | 19325 | 2018-04-25 19:21:06 | 23420 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A survey was carried out to appraise the level of aquacultural development in the last 30 years in Imo State, South eastern, Nigeria. The study was conducted by the use of questionnaires and visits to fish farms in all the three senatorial zones of the State namely; Okigwe, Orlu and Owerri. Data collected revealed that 79.49% of the farms were owned by individuals while values of 12.82%, 5.13% and 2.56% represents government, community and cooperative ownership respectively. However, 17.95% of ponds were established between 1978-1988 while 46.15% represents fish ponds established between years 1998-2008 . Earthen ponds were commonest with pond areas varying between 400-10,000m2.
    Description: includes:- 8 tables.;6 refs.
    Keywords: Aquaculture ; Nigeria ; Imo state ; freshwater environment ; Aquaculture development ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
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    Format: 41-44
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    Economics of trickling biological periwinkle shell filter for closed recirculating system (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23417 | 19325 | 2018-04-25 19:14:49 | 23417 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Studies on the economics of trickling biological periwinkle shells filter for closed recirculating catfish system was carried out at the University of Science and Technology, Port Harcourt, Nigeria for 12 weeks. The periwinkle shells biofilter and other recirculating aquaculture system (RAS) components were designed and set up for a pilot catfish production using Clarias gariepinus juveniles at the stocking density of 400 fish/m3. Using fish holding tank volume of 0.21m3, biofilter volume of 1m3, sedimentation tank volume and flow rate of 4.20m3 and 0.78m3/hr respectively, lift pump flow rate of 2.10m3/hr, and an annual production of 3 tons of catfish, a record of all financial expenditures was kept. The financial analyses of the system with periwinkle shells filter and that of imported plastic filter block of same size were prepared. The discounted cash flow projections for the two systems were also prepared. From the discounted cash flows, the economic viability indices for the two systems were computed. The economic analysis compared the profitability index of 1.45 and the payback period of 2.50 years for the system with periwinkle shells filter to the profitability index of 0.60 and payback period of 5.90 years for the imported plastic filter block, and concluded that the system with periwinkle shell filter was cheaper and more cost effective
    Description: Includes:- 5 tables.;10 refs.
    Keywords: Aquaculture ; Nigeria ; Port Harcourt ; Recirculatory aquaculture system ; freshwater environment ; Fish culture ; Cost analysis
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 22-29
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    Effects of length of delay after slaughter (Lodas) on raw catfish Clarias gariepinus (Burchell, 1822) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23418 | 19325 | 2018-04-25 19:17:12 | 23418 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The effect of delay after slaughter on microbial quality, proximate composition and sensory scores of raw catfish, Clarias gariepinus was evaluated. A total of 52 live catfish (average weight 700.0~c7.0g) were used for the experiment. Ten freshly slaughtered fish samples each were selected for organoleptic assessment at 0, 4, 8 and 12 hours post-slaughter, while three fish samples each were selected for chemical and microbial analyses. Microbial load on fish samples increased significantly (P〈 0.05) with increase in length of delay after slaughter, LODAS. Bacteria isolated included Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Bacillus spp and Staphylococcus aureus. Percent protein and ash contents of fish samples increased with increasing LODAS, while moisture content decreased and lipid was not affected. It was observed that raw C. gariepinus retained most of its physical attributes up to 4 hours post-slaughter. These quality attributes except colour and odour of gills, deteriorated significantly (P 〈 0.05) at every successive four-hour post-slaughter interval. Significant negative correlation existed between LODAS and sensory quality of raw fish (eyes, r = -0.966, P 〈 0.05; gills, r = -0.980, P 〈 0.05; skin, r = -0.998, P 〈 0.01; and odour, r = -0.994, P 〈 0.01). This study established that quality of raw C. gariepinus deteriorated with increasing LODAS and that raw C. gariepinus was not totally unacceptable when delayed for 12 hours after slaughter at ambient temperatures.
    Description: Includes:- 5 tables.;17 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; Lagos ; Proximate composition ; freshwater environment ; Organoleptic properties ; Fish spoilage ; Microbiological analysis ; Microbial contamination
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 30-35
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    Growth performance and nutrient utilization of common carp (Cyprinus carpio and Cyprinus carpio var specularis) fingerlings in New Bussa, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23424 | 19325 | 2018-04-25 19:30:19 | 23424 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: An investigation was carried out into the growth performance and nutrient utilization of common carp fingerlings in New Bussa, Nigeria, at the Hatchery Complex of National Institute of Freshwater Fisheries Research (NIFFR). The Carps were purchased from Jos, and transported to New Bussa, acclimatized for two weeks and stocked in outdoor concrete tanks measuring 2mx2mx1m containing filtered water to the level of 0.5m. Average weight and total length at the time of stocking were 40.80g and 6.30g respectively. The fish were stocked in four treatments, each replicated thrice at varying stocking densities of 3, 6, 9 and 12fish/m2 respectively. The fish were fed 35% crude protein formulated feed at 5% biomass and each daily feed was divided into two equal parts and fed manually by 9.00am and 6.00pm. Quantity of feed adjusted according to weight gain. Biweekly sampling was carried out for a period of 8 weeks, their morphological studies carried out. Weight gain, total length and feed consumed were recorded. Water parameters were monitored every sampling day. The result revealed that there is significant difference (P〈0.05) in all the parameters. The group with 48 (12 fish /m2) density exhibited significantly (P〈0.05) poorest weight gain and there was no significant difference (P〉0.05) between 12 and 24 stocking (3 and 6 fish/m2) densities as far as weight gain is concern. All other parameter; SGR, length, weight gain and feed consumed were also significantly different (P〈0.05). The treatment with 12fish/m2 showed significantly (P〈0.05) poorest feed conversion ratio (FCR). The treatment with stocking of 3 and 6fish/m2 performed best, therefore this stocking range is recommended in this zone. Acquiring of carp from colder region to hotter region is better done in the peak of raining season and to be transferred to earthen pond before hot weather resumes.
    Description: Includes:- 13 refs.
    Keywords: Aquaculture ; Cyprinus carpio ; Cyprinus carpio var specularis ; Nigeria ; New Bussa ; freshwater environment ; Growth rate ; Nutritional requirements ; Feeding experiments ; Fish culture ; Food conversion
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 60-63
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    Growth response and survival of Heterobranchus longifilis cultured at different water levels in outdoor concrete tanks: implications for culture (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23425 | 19325 | 2018-04-25 19:31:54 | 23425 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Thirteen-day-old hatchery-raised fry obtained from hormonally-induced spawns of mature African catfish H. longifilis broodstock were introduced to three different water levels (0.35, 0.50 and 0.65 m) in four replicates in 12 units of 2x2x1m3 outdoor concrete tanks. The fry were similarly stocked initially at 50 fry/m2 and later thinned down to 5 fish/m2 and cultured for 6 months. Fish were fed twice daily with commercial pellet feeds (Coppens?) while adjusting the feeding rate from 10 to 4% body weight and pellet size from 0.2 to 4.5 mm. The effects of pond water levels were evaluated in growth responses and survival. Water quality variables were similar (p 〉 0.05) in all compartments. Temperature, dissolved oxygen and pH were at the optimum level for fish. The results reveal significant (P 〈 0.05) treatment effects on growth performances. Fish kept at the highest pond water depth (0.65m) were heavier (P 〈 0.05) and had a higher specific growth rate (P 〈 0.001) than the others. Food conversion ratio and survival rate were unaffected by the experimental treatments. ANOVA revealed significant differences (P〈0.05) with culture period. The lowest water depth (0.35 m) favoured fish growth in the first 3 months while the highest water depth (0.65 m) favoured fish growth from the fourth month upwards (P〈0.05). These results are important because they indicate the optimum water depths for the culture of H. longifilis from fry to sub-adult and from the grow-out/fattening of sub-adult to adult, respectively, in outdoor concrete tanks.
    Description: Includes:- 3 figs.;35 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; Abia State ; freshwater environment ; Fish culture ; Survival ; Feeding experiments
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 64-72
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