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  • Fisheries  (214)
  • Aquaculture  (131)
  • Planning  (21)
  • Inorganic Chemistry
  • Lagos (Nigeria)  (264)
  • Bay of Bengal Large Marine Ecosystem Project (BOBLME)
  • 1
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    Report of the BOBLME Sharks Working Group, Male, Maldives, 5-7 July, 2011 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18975 | 17435 | 2015-12-31 16:01:58 | 18975 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Validation of available information on shark fisheries. Drafting of workplans and proposals to develop and implement National and Regional Plans of Action (RPOA-NPOA)
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Fisheries ; Management ; sharks ; fisheries ; conservation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 50
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  • 2
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    Report of the pilot EAFM course, 23-28 June, 2013, Kota Kinabalu, Malaysia (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19073 | 17435 | 2015-12-20 10:11:17 | 19073 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-13
    Description: Participants were exposed to concepts and information about EAFM using a structured, participatory method of delivery. The learning strategy involved pre- and post-course assessment as well as 4-6 month follow up at outcome level to assess improves EAFM practices. The report outlines methodology details of content and the daily feedback process.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: Predecessor to BOBLME Training of Trainers (ToT) in Essential Ecosystem Approach to Fisheries Management (EAFM), Kota Kinabalu, Malaysia, 30 June - 3 July, 2013 The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Education ; Fisheries ; Management ; Malaysia ; Ecosystem Approach to Fisheries Management (EAFM) ; training
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 34
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  • 3
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    Training of Trainers (ToT) in essential EAFM, 30 June - 3 July, 2013, Kota Kinabalu, Malaysia (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19075 | 17435 | 2015-12-20 10:16:50 | 19075 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-13
    Description: This built upon the previous Essential EAFM course. Participants were exposed to concepts about adult learning, course preparation,, participation engagement and how to deliver and manage interactive training sessions.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: Follow up to Report of the pilot Essential Ecosystem Approach to Fisheries Management (EAFM), Kota Kinabalu, Malaysia, 23-28 June, 2013 The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Education ; Fisheries ; Management ; Malaysia ; Ecosystem Approach to Fisheries Management (EAFM) ; training of trainers
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 30
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  • 4
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    Transboundary diagnostic analysis: executive summary (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19352 | 17435 | 2016-01-08 11:13:34 | 19352 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-26
    Description: The Transboundary Diagnosis Analysis(TDA) quantifies and ranks water-related environmental transboundary issues and their causes according to the severity of environmental and/or socio-economic impacts. The three main issues in BOBLME are; overexploitation of marine living resources; degradation of mangroves, coral reefs and seagrasses; pollution and water quality.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Keywords: Environment ; Fisheries ; Pollution ; Bay of Bengal ; Transboundary Diagnosis Analysis(TDA) ; water quality ; mangroves ; seagrasses ; coral reefs
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 6
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  • 5
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    Genetic study on breeding stock of the Indian mackerel along the Indian coast (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19367 | 17435 | 2016-01-17 10:22:46 | 19367 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-26
    Description: The study included: sample collection; microsatellite genotyping and analysis; and preliminary results
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Biology ; Fisheries ; Indian mackerel (Rastrelliger kanagurta) ; genetics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 12
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  • 6
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    Report of the BOBLME Regional Fisheries Management Advisory Committee, Bangkok, Thailand, 25-26 June, 2012 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19349 | 17435 | 2016-01-08 11:09:36 | 19349 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-26
    Description: The role of the Regional Fisheries Management Advisory Committee (RFMAC) is to interpret information and deliver ecosystem based fisheries management advice. The meeting was able to deliver Ecosystem Approach to Fisheries Management (EAFM) advisories for the hilsa and Indian Mackerel fisheries.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Fisheries ; Planning ; Policies ; Ecosystem Approach to Fisheries Management (EAFM) ; hilsa ; Indian Mackerel
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 29
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  • 7
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    Report of the NBFGR-BOBLME Indian mackerel genetics harmonisation training workshop, Kochi, India, 20-27 August, 2013 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19362 | 17435 | 2016-01-17 10:36:05 | 19362 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-26
    Description: This workshop was held at the National Bureau of Fish Genetic Resources and followed on from the Indian mackerel Working group meeting in Colombo (28-29 May, 2012). Activities included; DNA extraction; PCR (Polymerase Chain Reaction) for microsatellites; genotyping microsatellites; data analysis; emerging technologies; and an action plan
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Biology ; Fisheries ; genetics ; DNA extraction ; PCR ; genotyping ; microsatellites ; data analysis ; Rastrelliger kanagurta ; National Bureau of Fish Genetic Resources (NBFGR) Kochi ; India
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 68
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  • 8
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    Guide to the development of Myanmar's National Plan of Action for the conservation and management of sharks (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19371 | 17435 | 2016-01-17 11:14:14 | 19371 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-26
    Description: The priorities for the revised National Plan of Action include: strengthening current regulations; improved data collection of landings; identifying breeding and nursery grounds; study of ecology and biology of sharks; improved data acquisition of shark products and trade; and active enforcement at sea, landing sites and markets.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Fisheries ; Law ; Policies ; Myanmar ; sharks ; rays ; fisheries ; National Plan of Action (NPOA)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 33
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  • 9
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    Socio-economic monitoring report for St Martin's Island, Bangladesh (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19421 | 17435 | 2016-01-17 11:12:58 | 19421 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-28
    Description: This report was based on fieldwork conducted by trainees at the Socio-economic Monitoring (SocMon) workshop held at St Martin's Island. Topics included: community infrastructure; educational services; health services; water and sewerage; coastal and marine activities; material style of life; status of women; governance; and perceptions
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Planning ; Sociology ; Bangladesh ; St Martin's Island ; socio-economic Monitoring (SocMon)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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  • 10
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    Report of the SocMon capacity development workshop for the Bay of Bengal Large Marine Ecosystem countries in South Asia, St Martin's Island, Bangladesh, 2-11 January, 2015 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19420 | 17435 | 2016-01-12 16:25:24 | 19420 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-28
    Description: Socio-economic Monitoring (SocMon) is an approach and set of tools for conducting socio-economic monitoring of changes in coastal communities. Planned outputs of the workshop included: training of local staff i SocMon methodologies; draft a SocMon report for St. Martin's Island; a workplan for implementing the SocMon; a communication strategy; and key inputs to a regional SocMon strategy
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Planning ; Sociology ; Bangladesh ; St Martin's Island ; Socio-economic Monitoring (SocMon)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 41
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  • 11
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    BOBLME Mergui Archipelago Stakeholder Workshop, Ranong, Thailand, 13-14 July 2010 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18855 | 17435 | 2015-12-31 10:26:53 | 18855 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Develop recommendations and workplan to establish environmental baselines and monitoring;alternative livelihoods; planning and management; and institutional arrangements.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Environment ; Fisheries ; Management ; Planning ; Mergui archipelago ; fishery resource management ; ecosystems ; alternative livelihoods
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 45
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  • 12
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    Report of the Training Workshop on MPA Management Effectiveness Assessment Tool, Dhaka, Bangladesh, 27 and 29 April, 2015 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19614 | 17435 | 2016-01-25 09:58:37 | 19614 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-02
    Description: Objectives of the workshop included; introduction to various Marine Protected Area (MPA) tools with a focus on Management Effectiveness Assessment Tool (MEAT); report on selected MPAs in Bangladesh; undertake initial assessments using MEAT; and develop workplans for other MPAs
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Fisheries ; Bangladesh ; Thailand ; Marine Protected Area (MPA) ; Management Effectiveness Assessment Tool (MEAT)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 26
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  • 13
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    Ecosystem Approach to Fisheries Management (Essential EAFM) training and TOT in Sri Lanka (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19640 | 17435 | 2016-01-26 10:08:11 | 19640 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-02
    Description: This report presents presentations from representatives of 12 countries, key outcomes and recommendations for the future.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Education ; Fisheries ; Management ; Ecosystem Approach to Fisheries Management ; Essential EAFM ; Training of trainers (TOT) ; Wayamba University of Sri Lanka
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 33
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  • 14
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    Report of the final workshop on education, capacity development and monitoring in support of Bar Reef Marine Sanctuary (BRMS) management, Kalpitiya, Sri Lanka, 23 May, 2015 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19611 | 17435 | 2016-01-25 09:56:47 | 19611 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-02
    Description: Objectives of the workshop included: presentation of research to stakeholders; briefing of stakeholders on project objectives, contents and activities; to get stakeholder perceptions and suggestions.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Education ; Fisheries ; Sri Lanka ; Bar Reef Marine Sanctuary ; Marine Protected Area (MPA)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 32
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  • 15
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    Report on Saint Martin's Island ecosystem boundary, Bangladesh: final report (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19629 | 17435 | 2016-01-25 10:13:04 | 19629 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-02
    Description: This report seeks to strengthen national capacity on managing Marine Protected Area (MPAs) in Bangladesh. St Martin's Island was used as the pilot ecosystem boundary delineation.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Fisheries ; Bangladesh ; St Martin's Island ; Marine Protected Area (MPAs)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 69
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  • 16
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    Genetic variation and population structure of Indian mackerel in the southern part of BOBLME region, Indonesia (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19638 | 17435 | 2016-01-26 09:59:26 | 19638 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-02
    Description: Objectives included measuring genetic variation and population structure of Indian mackerel (Rastrelliger kanagurta) in order to ascertain whether current exploitation is sustainable. .
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Biology ; Fisheries ; Indonesia ; Indian mackerel (Rastrelliger kanagurta) ; genetic variation ; population structure
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 11
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  • 17
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    Report of the BOBLME Fisheries Assessment Working Group meetings, Bangkok, Thailand, 13-14 September, 2010 & Chennai, India 25 November, 2010 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18936 | 17435 | 2015-12-31 11:13:42 | 18936 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Review of available data and assessments for Hilsa (Tenulaosa ilisha) and Indian Mackerel (Rastrelliger kanagurta). Identification of future assessment approaches and data needs and stock status advice.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Fisheries ; Management ; Planning ; Hilsa ; Tenulaosa ilisha ; Indian Mackerel ; Rastrelliger kanagurta ; stock status ; assessment
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 60
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  • 18
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    BOBLME ICM Best Practices and Lessons Learned South Asia Workshop, Colombo, Sri Lanka, 28-29 July, 2010 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18939 | 17435 | 2015-12-31 11:25:47 | 18939 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Country overviews of Community Based Integrated Coastal Management (CB-ICM) for Bangladesh, The Maldives, Sri Lanka, India and Southeast Asia. Recommendations for the way forward
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Keywords: Fisheries ; Management ; Planning ; Bangladesh ; The Maldives ; Sri Lanka ; India ; fishery resource management ; Community Based Integrated Coastal Management ; CB-ICM
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 70
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  • 19
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    Mergui Archipelago Joint Stakeholder Workshop report, Phuket, Thailand, 18-19 January, 2011 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18943 | 17435 | 2015-12-31 11:51:42 | 18943 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Data, information gaps and related monitoring requirements including trans-boundry issues; alternative livelihoods; critical habitat and develoment issues; policy, planning and institutional development.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Fisheries ; Information Management ; Management ; Planning ; Mergui archipelago ; fishery resource management ; ecosystems ; alternative livelihoods ; institutional development
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 88
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  • 20
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    Assessments of the Indian Mackerel (Rastrelliger kanagurta) and the Hilsa shad (Tenualosa ilisha) fisheries in the BOBLME countries (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18955 | 17435 | 2016-01-11 09:22:28 | 18955 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Assessment of the Indian Mackerel (Rastrelliger kanagurta) and the Hilsa shad (Tenualosa ilisha) fisheries in BOBLME countries.Each country was benchmarked against three principles; status of stocks, impact of fisheries on the environment and management frameworks in place. A wide range of indicators was used with a simple color-coded scoring system allowing easy identification of both strengths and weaknesses in those three areas. Individual country assessments are also included.
    Description: FAO
    Description: BOBLME
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Fisheries ; Management ; Hilsa ; Indian mackerel ; fisheries management ; frameworks ; Bay of Bengal ; ecosystem impact ; status ; indicators
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 378
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  • 21
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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
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 56-59
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  • 22
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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
    Repository Name: AquaDocs
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  • 23
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    Occurrence of Anisakids nematodes on frozen hake (Merluccius capensis) in Yenagoa market, Bayelsa State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23419 | 19325 | 2018-04-25 19:19:35 | 23419 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Samples of the frozen hake (Merluccius capensis) were obtained once a week as corresponding to supply in Yenagoa Market Bayelsa State, Nigeria. From every supply of 10 cartons, 10 pieces of hake were examined for the presence of Anisakids nematodes. The incidence was concluded after sampling continuously every week for 8 weeks between September-November 2009. The highest parasite burden (13.2 ~c 2.28) was recorded in the second week and the lowest (8.5~c 2.9) in the 7th week, the highest mean weight of fish sample calculated was 134.80 ~c 19.16 gm in the 4th week and lowest in the 5th week with 118.30 ~c 3.56 g. The mean length was highest (29.10 ~c 1.90cm) in the second week and lowest (26.40 ~c 1.88 cm) in the 7th week. The percentage infection was 96.25% and very alarming since only 3 pieces were not infected as observed from all the samples examined.
    Description: Includes:- 1 table.;4 figs.;13 refs.
    Keywords: Fisheries ; Merluccius capensis ; Nigeria ; Yenogoa ; freshwater environment ; Parasites ; Parasite attachment ; Infectious diseases ; Frozen products ; Fish spoilage
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    Isolation, identification and prevalence of parasites on Oreochromis niloticus from three selected river systems (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23427 | 19325 | 2018-05-02 08:03:50 | 23427 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The prevailence of protozoan and helminthic parasite species occurring on and in the internal organs of Oreochromis niloticus were studied. Twenty samples of a mixture of adult and juvenile individuals of Oreochromis niloticus were randomly obtained from fishermen landing at the jetties of Epe water side, Ikorodu (Odoguyan) river and a brackish water (makoko), between September and and October, 2009, during a period of low rainfall. Samples were eviscerated and the parasites were excised, identified and each specie of parasites was counted. Most of the parasites encountered were of the Protozoa, manogenea, Digenea, Cestoda and Nematoda groups. The infestation was predominantly by Nematoda species and followed by protozoan species. Protozoan parasites like Trichodina sp and Ichyobodo sp were found to be prevalent, in varying magnitude, in most of the fish samples without clear age discrimination. The study reveals that the prevailence of parasites infestation increases with increasing length, size and age of the fish host and different pars of the fish.
    Description: Includes:- 6 tables.;11 refs.
    Keywords: Ecology ; Fisheries ; Oreochromis niloticus ; Nigeria ; Epe ; Nigeria ; Ikorodu ; Nigeria ; Ogun R. ; freshwater environment ; Parasites ; Identification
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  • 25
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    Functional roles of mangroves of the Niger Delta to the coastal communities and national economy (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23434 | 19325 | 2018-05-02 08:11:31 | 23434 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Mangrove swamps supply various goods and provide invaluable ecological services, especially as critical habitats for fish breeding. These functions are discussed in the context of rural livelihoods of coastal dwellers in the Niger Delta in particular, and the contribution to national economies in general. The decline in capture fisheries production in Nigeria is partly linked to massive mangrove loss in the Niger Delta. This provides basis for urgent evolution of effective mangrove conservation schemes in the Niger Delta and for focused research on the interaction between the delta mangroves and inland/coastal fish recruitment and production dynamics.
    Description: Includes:- 23 refs.
    Keywords: Ecology ; Fisheries ; Nigeria ; Mangroves ; brackishwater environment ; Mangroves ; Fishery economics
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  • 26
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    The last standing mangrove forest ecosystem southeast of the Niger Delta (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23437 | 19325 | 2018-05-02 08:15:15 | 23437 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Standing on the abandoned jetty at Iwuochang / Upenekang fishing beach in 1999 [Ibeno LGA, Akwa Ibom State] and looking across the Qua Iboe River [en-route the Atlantic Ocean] were strips of luxuriant mangrove vegetation all around the estuary. Surprisingly, 10 years later still standing on the same jetty and looking across the same River also, all the vegetation round about the estuary are now replaced by nipa palms with pockets of mangrove plants. The fear of the paper is that, there may be crash in fish supply from the coastal waters of Nigeria in the near future. The time to act is now and FISON must be pro-active in this coastal re-construction and re-habilitation. Nigeria’s coastal water is a ‘food-basket’; much should be done to protect and jealously cherish it ? else, it may be the last standing mangrove forest ecosystem southeast of the Niger delta.
    Description: Includes:-14 refs.
    Keywords: Ecology ; Fisheries ; Nigeria ; Akwa Ibom ; brackishwater environment ; Brackishwater environment ; Mangroves ; Fishery development ; Fishery management ; Mangrove swamps
    Repository Name: AquaDocs
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  • 27
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    Management and utilization of water hyacinth (Eichhornia crassipes) for improved aquatic resources (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23439 | 19325 | 2018-05-02 08:19:22 | 23439 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Natural aquatic plants population can be healthy for any aquatic ecosystems as they serve as fish feed, play an important role in nutrient cycling, purify the water, control unwanted algal growth and support fauna including birds. Water hyacinths (Eichhornia crassipes) have proven to be a persistent and expensive aquatic weed problem. The review was carried out in the face of current global challenge (climate change) which threatens biodiversity conservation and sustainable use of natural resources so that water hyacinth could be viewed as an asset of multifarious benefits considering the revealed highlights rather than been labeled expensive nuisance. The simplest method of management of aquatic weeds is to harvest it and utilize it for cost effectiveness in production such preparation of fish and livestock feeds, bio-gas production, making of charcoal briquetting and waste water treatment for domestic and industrial use. The main problem of utilization and management of water hyacinth is its high cost of transportation to sites for utilization but, once this can be overcome as revealed in the review appropriate utilization techniques is recommended.
    Description: Includes:- 4 tables.;34 refs.
    Keywords: Aquaculture ; Biology ; Conservation ; Eichhornia crassipes ; Nigeria ; freshwater environment ; Plant utilization ; Aquatic plants
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  • 28
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    Occupation and health hazards in Nigerian coastal artisanal fisheries (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23436 | 19325 | 2018-05-02 08:13:37 | 23436 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: There are more occupational and health hazards in the Fishing Industry than in other occupational categories in the world. In Nigerian Industrial Fisheries, safety measures are regulated while little attention is given to safety standards in the artisanal fisheries. In West Africa, the coastal artisanal canoe fatality rates have been given in 1991-1994 to be 300 to 1,000 per 100,000 fishermen. Thus, the fatality rate in Nigerian artisanal fisheries, (coastal states) has been estimated to be 999 to 3,329 per 100,000 fishermen. The high rate is due to piracy, boundary disputes between fishing communities, unemployment, societal low value for human life and human labour. The paper discusses the various types of accidents associated with artisanal coastal fisheries and give recommendations. Fishermen have rights to safe working conditions in their working environment just as workers in offices and factories on land.
    Description: Includes:-11 refs.
    Keywords: Engineering ; Fisheries ; Sociology ; ASE ; Nigeria ; brackishwater environment ; Hazards ; Navigational hazards ; Hazard assessment ; Health and safety ; Safety regulations
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  • 29
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    Mercury content of some canned seafood collected from Nigerian retail markets (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23444 | 19325 | 2018-05-02 08:30:46 | 23444 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Twenty samples of canned seafood consisting of tuna, mackerel, sardines, prawn and shrimp were collected from retail operations in Victoria Island, Lagos, Nigeria. Mercury content in these canned seafood were determined after digestion by the Association of Official Analytical Chemists methods. The mercury contents for all the canned seafood products have concentrations well below the permissible EU levels for this toxic metal. Their contribution to the body burden can therefore be considered negligible and the canned seafood products seem to be safe for human consumption.
    Description: Includes:-1 table.;13 refs.
    Keywords: Fisheries ; Pollution ; Nigeria ; freshwater environment ; Mercury ; Heavy metals ; Pollution ; Chemical pollution
    Repository Name: AquaDocs
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    Format: 171-173
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  • 30
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    Impact of oil exploration on fisherfolks' livelihood and safety of fisheries industry in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23443 | 19325 | 2018-05-02 08:29:36 | 23443 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: There have been many outcries in the Nigerian media on the various environmental degradation of the vast water space in the Niger Delta area of Nigeria by oil explorers. About 70% of the Nigerian populace lives in the coastal areas where the occupation is predominantly fishing and farming. For most of the publications, the extents of impact on the fishing industry are not addressed in order for solutions to be given. Production from the fisheries sector has dropped astronomically thereby earning the country a deficit due to importation of frozen fish to the country. In this study, a survey of three states (Bayelsa, Rivers and Delta) in the Niger Delta area of Nigeria was done. The communities studied include Ogulagha, Okobelema and Okpoama. Personal interviews with fishermen and primary data on the sector’s contribution to fish production and GDP were also carried out. The study aimed at finding out the sources and nature of degradation and the impacts such have on the fishing industry and the socio-economics of the fishermen. The study revealed that there are no significant difference in the negative impacts of environmental degradation caused by the activities of the oil companies on the socio-economics of the fishermen ((F2,27=0.59, P〉0.05)) The difference is not significant and the hypothesis is therefore accepted. The major impact on fishing was depletion in catches and low income earnings by fishermen with a resultant poor quality of living and livelihood. Oil spills, foreign vessels incursions and bunkering, vandalization of pipelines were identified sources of depletion in fish catches from the wild. The personal interviews and Focus Group Discussion (FGDs) showed that most heads of communities rely on the remuneration they get from the companies and refused to mobilize the fishermen for joint action against the oil companies. Mitigation measures usually carried out by the oil companies do not actually replenish the destroyed mangroves where breeding of fishes take place. The communities need the Government to institute high level surveillance of the high seas and monitor the activities of oil explorers as well as education of the communities on the effects of bunkering near shoreline.
    Description: Includes:- 1 table
    Keywords: Fisheries ; Pollution ; Sociology ; Nigeria ; Delta State ; Nigeria ; Bayelsa State ; Nigeria Rivers State ; brackishwater environment ; Degradation ; Pollution effects ; Oil spills ; Oil pollution
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    Bioaccumulation of heavy metals in freshwater Clarias anguillaris and Parachanna africana from Lake Geriyo in Yola, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23447 | 19325 | 2018-05-02 08:36:01 | 23447 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study was carried out to determine the bioaccumulation of heavy metals in Clarias anguillaris and Parachanna africana from Lake Geriyo Yola, Nigeria using energy dispersive X-ray fluorescence (EDXRF) spectrophotometer. The results in (mg/kg, dry weight) showed different levels of Cr, Cu, Mn, Fe, Ni, Zn, and Pb in the two fish species. The order of heavy metals accumulated by C. anguillaris and P. africana are Cr〉Fe〉Zn 〉 Mn〉Cu〉Ni〉Pb and Ni〉Fe〉Zn〉Cu respectively. The levels of Cr, Mn and Ni in C. anguillaris and in Ni in P. africana were higher than WHO and FEPA recommended maximum permissible limits (MPL) in fish, while the levels of Zn, Cu and Pb were below the standards. The results suggest that Lake Geriyo has high pollution loads of these heavy metals in fishes and could pose a health hazards to man. Consequently, close monitoring of heavy metal loads in Lake Geriyo is recommended with a view to minimizing the risks to health of the population that depend on the lake for their water and fish supply.
    Description: Includes:- 1 table.;13 refs.
    Keywords: Fisheries ; Pollution ; Clarias anguillaris ; Nigeria ; Geriyo L. ; freshwater environment ; Bioaccumulation ; Pollution effects ; Heavy metals ; Hazard assessment
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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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  • 33
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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
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  • 34
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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
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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
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  • 36
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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
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  • 37
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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
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  • 38
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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
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    Fish hatchery survey in Borno State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23428 | 19325 | 2018-05-02 08:04:53 | 23428 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Aquaculture is regarded as being uniquely placed to reverse declining supplies from capture fisheries and for this to be realized, fish hatchery has a notable role to play. Fish hatchery is the bedrock upon which true and sustainable fish farming can be built. A field survey was conducted in the 3 geo-political zones of the State to look into the number and functionality of fish hatcheries. Results showed that there were about 23 fish hatcheries in the State with the majority concentrated in Maiduguri metropolis. Private ownership (79%) dominated of which 84% were functional. Average annual production is less than 10,000 fingerlings in most hatcheries while the wild sourced fingerlings were used as alternative by the majority. Most hatcheries (62%) made use of concrete tanks for breeding and nursery. All the respondents were of the opinion that the level of patronage was encouraging, though agreed that the level of aquaculture development in the State was low. However, few among the respondents said aquaculture development in the State is on the increase due to low productivity of natural water bodies for the past 10 years. Recommendations were made on how to improve hatchery operation that could help to boost aquaculture development in the State
    Description: Includes:- 3 tables.;3 figs.;5 refs.
    Keywords: Aquaculture ; Nigeria ; Borno State ; Hatchery management ; freshwater environment ; Fish culture ; Freshwater aquaculture
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    Suitability and potentials of organic aquaculture production in Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23430 | 19325 | 2018-05-02 08:06:54 | 23430 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Organic agriculture is a food production system that strives to sustain the health of soils, ecosystems and people; and can be employed to mitigate climate change effects which contribute to lowering fisheries productivity worldwide. In many developing countries organic agriculture practice has impacted positively on food security and rural livelihoods, particularly in fisheries management and aquaculture, hence the present advocacy for organic aquaculture practice in Nigeria.
    Description: Includes:- 15 refs.
    Keywords: Aquaculture ; Nigeria ; freshwater environment ; Aquaculture ; Aquaculture development
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    Prospects and problems of aquaculture in Borno State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23429 | 19325 | 2018-05-02 08:05:56 | 23429 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Borno State has a great potential for fish production from the culture and capture fisheries, regrettably the potential for the former is still yet untapped despite low productivity of large rivers and lakes that are already over-exploited. Aquaculture has the potential to help expand the resource base and reduce the pressure on capture fisheries, generating employment, foreign exchange and elevating socio-economic of the farmers. This paper therefore, reviewed the prospects and major problems of aquaculture in the state with a view to fortify interest on fish farming.
    Description: Includes:- 5 refs.
    Keywords: Aquaculture ; Nigeria ; Borno Sate ; freshwater environment ; Aquaculture ; Aquaculture development
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    Aqua-tourism potentials in some fishing sites in bitumen bearing wetlands of Ondo State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23433 | 19325 | 2018-05-02 08:09:53 | 23433 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A 24-month survey was conducted during the wet (May- August) and Dry (October ?April) season of 2004 and 2006 along eight economic fishing sites in Ondo State bearing Wetland, with the aim of determining the abundance, species diversity of some ornamental species thus promoting ecotourism potential and preventing the loss of these species in the area during and after exploitation. The study was carried out in 4 study zones namely Odigbo (S1), Ode-Aye (S2), Okitipupa (S3), and Ilaje ese-odo (S4) noted for active bitumen seepage. Fishing potential of the area was assessed using catch per unit effort method as well as physico chemical analysis of water samples obtained from designated sites in the area in accordance with AOAC methodology. Fish compositions were assessed using multifilament gillnet, of different sizes hanging from 38 mm to 178 mm. The results revealed that the area is blessed with 24 economic species of fishes belonging to 13 families which could boost the tourist potential of Ondo State. The percentage composition of families identified varies as follows: Ariidae (2.04%), Anabantidae (3.27%), Bagridae (6.36%), Channidae (4.32%), Characidae (10.62%) Cichlidae (45.65%) Clupeidae (3.94%), Clariidae (11.78%), Hepsetidae (0.95%), Mormyridae (7.42 %), Malapteruridae (1.13%), Schilbiidae (1.76%), Polypteridae (0.76%). The family Cichlidae was the most abundant in the area during the study period. The diversity of fish during the study varied with locations and season .The study showed higher fish population during the dry season than raining season and lower population in study zones highly polluted by bitumen seepages. The study emphasizes the need for sustainable resource management during bitumen exploitation.
    Description: includes:- 2 tables.;1 fig.;12 refs.
    Keywords: Fisheries ; Nigeria ; Ondo State ; freshwater environment ; Fish consumption ; Tourism ; Recreation ; Stock assessment
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    Issues and constraints in the coastal fisheries of the Niger Delta area of Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23435 | 19325 | 2018-05-02 08:12:28 | 23435 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The Niger Delta serves as the economic nerve centre of the Nigeria Federation with its vast oil deposits. However the question is how far has the coastal fisheries thrived in the Niger delta since the discovery of crude oil? Fishing is the predominant occupation in the coastal communities. The Niger Delta is home to Nigeria’s oil industry. However, this ‘blessing’ has become a challenge for the people of the Niger Delta. They have suffered environmental devastation, economic poverty, and constant conflict. This paper discusses issues and challenges facing fisheries development in Niger-Delta area of Nigeria.
    Description: Includes:- 6 refs.
    Keywords: Fisheries ; Nigeria ; Niger Delta ; marine environment ; Fishery development ; Resource development
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  • 44
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    Toxicity of drilling fluid XP-07 on microbial load and survival of Oreochromis niloticus fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23441 | 19325 | 2018-05-02 08:26:44 | 23441 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Static bioassays were carried out in the laboratory for 96h to investigate the effect of Parateq a synthetic base mud on the fingerling of Orechromis niloticus and their microbial population. The fingerlings were exposed to different concentrations (0, 1000, 3000, 5000 and 9000Mg/l) of drilling fluid. Fish mortality data were recorded at 24, 48, 72 and 96h and analysed using Finney’s Probit Analysis method to calculate LC50 values (concentration of drilling fluid in water that will kill 50% of the fish population in 96 hours). The 96h LC50 was 2210Mg/l.The mortality increased with increase in concentration, while, the lethal times decreased as concentration increased. The bacterial biomass ranged from 1.59 x 108 to 6.0 x 106CFU/ml while fungal biomass ranged from1.0 x 103 to 2.1 x 104 CFU/ml. Results revealed that there was an increase in fungal biomass with increase in mud concentration and a decrease in bacterial biomass with increase in mud concentration.
    Description: Includes:- 2 tables.;1 fig.;20 refs.
    Keywords: Biology ; Fisheries ; Pollution ; Oreochromis niloticus ; Nigeria ; Aluu Rivers State ; freshwater environment ; Toxicity ; Microbiological analysis ; Microbial contamination ; Pollution effects ; Chemical pollutants
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    Toxicity of herbicide Propanil on Oreochromis niloticus fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23438 | 19325 | 2018-05-02 08:16:59 | 23438 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A static bioassay method to determine the acute toxicity of the herbicide propanil to Oreochromis niloticus was investigated under Laboratory conditions for 96 hours exposure period. Concentrations of propanil used include: 0.0096ml/l, 0.0103ml/l, 0.011ml/l and 0.012ml/l respectively. The lethal concentration (LC50) value of propanil on fingerlings of Oreochromis niloticus was 0.0097ml/l for 96 hours of exposure. The regression equation for probit kill from propanil was found to be Y = 29.84 + 12.33* log conc. (r2 0.9951, Y = Probit kill). Fish showed various abnormal behaviours upon exposure to propanil. Immediate reaction was erratic swimming and tendency to jump out of the test bowl. Others include: restlessness, un-coordinated movement, vertical swimming, air gulping, equilibrium loss, a period of quiescence and eventually death.
    Description: Includes:- 2 tables.;1 fig.;21 refs.
    Keywords: Fisheries ; Pollution ; Oreochromis niloticus ; Nigeria ; Markudi ; freshwater environment ; Toxicity ; Lethal effects ; Toxicants ; Pollution effects ; Fingerlings ; Herbicides
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    Relationship among Tilapia guineensis fingerlings abundance and water quality variations in a brackish water reservoir in Lagos (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23442 | 19325 | 2018-05-02 08:28:15 | 23442 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: In recent times there has been an upsurge in the culture of Tilapia in Nigeria resulting in increased demand for the fingerlings which is hardly satisfied. This is due to increasing demand for table size tilapia as food fish and under-sized tilapia in the fish meal and fish canning industries in Nigeria. Collection of Tilapia guineensis fingerlings from the wild, to augment hatchery production, has been the practice and this is subject to environmental fluctuations. Multivariate regression and correlation analyses of accumulated data were used to investigate the effects of changes in water quality parameters on abundance of fingerlings of Tilapia guineensis in a brackishwater habitat in Lagos. Dissolved oxygen (DO), salinity and secchi transparency were found to be the most dominant factors affecting the abundance of Tilapia guineensis fingerlings in the Lagos lagoon. Peak period of abundance was closely associated with period of low salinity (0.50%o to 5.60%o), which coincided with the period of low transparency and low DO in the rainy season. The correlation analyses of Tilapia guineensis fingerlings with the water quality parameters yielded the following correlation coefficients (r)- 0.598; (salinity); -0.644 (transparency); -0.710 (DO); -0.566; (temperature) and 0.129 (pH). The abundance of Tilapia guineensis fingerlings in the Lagoon was ultimately defined by a suitable regression equation. This result is expected to optimize the collection of fingerlings of Tilapia guineensis from the wild and boost food fish security in Nigeria and elsewhere.
    Description: Includes:- 1 table.;1 fig.;( refs.
    Keywords: Chemistry ; Fisheries ; Tilapia guineensis ; Nigeria ; Port Harcourt ; brackishwater environment ; Water quality ; Fingerlings ; Chemical properties ; Physicochemical properties
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    Tissue distribution of heavy metals in fin fish from a tidal fish farm in South East Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23450 | 19325 | 2018-05-04 17:32:24 | 23450 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The concentration of heavy metals: Lead (Pb), Cadmium (Cd), Iron (Fe) and Zinc (Zn) in tissues of fin fish from a tidal fish farm in Calabar, South East Nigeria, was determined. The mean levels of heavy metals (~kgg-1) in gills, muscle tissues, liver and intestines of catfish were Pb: 2.39~c1.24; Cd: 0.87~c0.83; Fe: 3.96~c1.55; Zn: 8.15~c3.18. Mean levels in Tilapia were Pb: 0.035~c0.002; Cd: 0.61~c0.05; Fe: 1.09~c0.61; Zn: 2.17~c0.53. There was no significant difference (p〈0.05) in tissue concentrations of Pb and Cd whereas a significant difference (p〈0.05) was observed between Pb and Zn concentrations for both species of fish. Concentrations were also higher in liver, gills and muscle tissues than the intestines. Highest concentrations were observed in the liver and gills in both species. Generally, higher concentrations were observed in liver, gills and muscles of Catfish than in Tilapia. Concentrations of Pb and Fe in Catfish were significantly higher (p〈0.05) than the WHO limits, while Zn and Cd were lower. Tissue concentrations of all the metals in Tilapia were however, within the WHO recommended limits. The concentrations in all the fish tissues were significantly higher (p〈0.05) than in the surrounding water. The observed values in Catfish indicate environmental threat to the health of the fish and indeed the humans that consume them and therefore calls for environmental surveillance in the area
    Description: Includes:- 3 tables.;1 fig.;7 refs.
    Keywords: Aquaculture ; Pollution ; Nigeria ; Calabar ; freshwater environment ; Heavy metals ; Tissues ; Pollution ; Pollution effects
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    Effects of locust bean (Parkia bigtobosa) effluent on the histology of Clarias gariepinus juveniles (Burchell 1822) (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23448 | 19325 | 2018-05-02 08:37:49 | 23448 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The poor nature of most Agricultural processing practices in Nigeria have had adverse effect on our environment, and our aquatic resources are of no exception. This study was conducted to ascertain the median lethal concentration of the effluent within the 96 hours period and also to ascertain the extent of damage on some of the histological characteristics of the Clarias gariepinus juveniles. Juveniles of the Clarias gariepinus (mean weight 30g) were exposed to varied concentrations of the locust bean effluent under the standard laboratory conditions. Data on mortality corresponding to the various concentrations were subjected to the probit and logit transformations and used to calculate the LC50 graphically. The result shows the toxicity of the locust bean effluent to Clarias gariepinus juveniles as 0.089mg/L (treatment 4) during the period of study. Exposure to both the acute and subletheal concentrations resulted in a number of physiological dysfunction of the test fish. Observation of the fish under the tests revealed unbalanced swimming patterns loss of reflex, rapid opercular movements and gasping for air. Histopathological examination of the gill and liver of the treated fish showed signs of damage, ranging from Hypoxia, lesions, necrosis, fibrosis cell stasis and hyperplasia at the sublethal levels.
    Description: Includes:- 2 tables.;1 fig.;22 refs.
    Keywords: Fisheries ; Pollution ; Clarias gariepinus ; Nigeria ; Parkia bigtobosa ; freshwater environment ; Toxicity ; Lethal effects ; Pollution ; Histology
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    A brief examination of the food and biometric features of the grey mullet, Mugil cephalus (Linnaeus) from low brackish / fresh water lagoon (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23452 | 19325 | 2018-05-04 17:37:43 | 23452 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A total number of 166 specimens of Mugil cephalus caught from Epe Lagoon (low brackish/ freshwater) were examined for food and feeding habit and biometric features from November 2006 ? May 2007. The food of the species consisted mainly of algae (Bacillariophyta, Cyanophyta, Chlorophyta and Pyrrophyta) and detritus. The size range of fish examined were 12.4 ? 27.0cm (standard length) while the weight ranged from 22.40 ? 308.00g. The mean values of the biometric characters of Mugil cephalus did not reflect wide variations. The population dominant cohort in the lagoon represents the harvestable and marketable representative for a sustainable fishery and is a strong indication of potential for freshwater culture of this marine species.
    Description: Includes:- 2 tables.;1 fig.;23 refs.
    Keywords: Ecology ; Fisheries ; Mugil cephalus ; Nigeria ; Epe Lagoon ; freshwater environment ; marine environment ; Feeding behaviour ; Food preferences ; Biometrics
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    Fish diversity in two reservoirs in Southwest Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23458 | 19325 | 2018-05-04 17:48:45 | 23458 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study investigated the fish diversity of Eko ? Ende and Owalla reservoirs, which are within the Osun river system in South West, Nigeria with a view to document biodiversity information needed for conservation and sustainable fisheries. Fish samples were collected monthly from the two reservoirs for one year, using a battery of multifilament gill nets. The data collected from each reservoir was analyzed for fish diversity. Information obtained on the forage / carnivore (F/C) ratio of fishes in each reservoir was used in measuring and comparing the ecological balance of the reservoirs. The results showed that eighteen fish species representing 16 genera and 10 families were identified in Eko ? Ende, while 17 fish species in 15 genera and 10 families were identified in Owalla during the period of study. Sixteen species (representing 84.2% of the total number of fish species) were common to both reservoirs and they were both dominated by Cichlids. Eko ? Ende Reservoir had greater fish diversity than the Owalla Reservoir. Shannon ? Weiner (H') index of fish diversity from Eko ? Ende reservoir was 2.37 while that from Owalla reservoir was 2.10. The forage / carnivore (F/C) ratios of the fishes from the two reservoirs showed that Eko ? Ende reservoir (F/C = 1.98) is ecologically balanced, while Owalla reservoir (F/C = 0.92) is not Owalla reservoir had a higher population of Hemichromis fasciatus (a predatory species). This reservoir also had more intensive fishing activities than the smaller Eko ? Ende reservoir. The study concludes on the need for a participatory research to alleviate the problem of ecological imbalance of fish species in Owalla reservoir.
    Description: Includes:- 4 tables.;28 refs.
    Keywords: Ecology ; Fisheries ; Nigeria ; Eko-Ende Reservoir ; Nigeria ; Owalla Reservoir ; freshwater environment ; Biodiversity ; Species diversity ; Check lists
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    Fatty acid composition of catfish (Clarias gariepinus) viscera oil (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23502 | 19325 | 2018-05-07 12:25:41 | 23502 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The fatty acid composition of oil extracted from the viscera of African catfish, Clarias gariepinus caught from a fish farm in New Bussa was investigated with a view to prove their usefulness. A total of 20 fatty acids were obtained out of which five were identified. Lauric, Palmitic and Stearic acids were the main saturated and monounsaturated fatty acids respectively. The principal acids in the polyunsaturated group were Oleic and Linoleic acids. C. gariepinus viscera is constituted of polyunsaturated fatty acids which make it a valuable pharmaceutical raw material rather than waste.
    Description: Includes:- 1 table.;10 refs.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; New Bussa ; freshwater environment ; Fatty acids ; Polyunsaturated fatty acids ; Chemical properties
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    Proximate analysis of snakehead fish, Parachanna obscura (Gunther 1861) of the Cross River, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23509 | 19325 | 2018-05-08 15:33:45 | 23509 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: African snakehead, Parachanna obscura is being considered as an emerging aquaculture candidate in Nigeria. The species is very palatable and has a good fillet quality. Study was conducted on the proximate composition of the species from Cross River, Nigeria. Samples of snakehead were analyzed for protein, fat, moisture, crude fibre and ash contents. The protein content of the species ranged from 21.03-22.03 with mean value of 21.5%. The fat content ranged from 17.1-17.4% with a mean value of 17.2 %. Moisture content ranged from 51.1-52.0 % with a mean value of 51.7%. Ash and crude fibre contents were very low. The protein content of Parachanna obscura compares favourably with that of other members of the family Channidae. The fat content is exceptionally high, making the species a good healing and recuperating agent for post-natal and post-operation patients. We strongly recommend the culture of Parachanna obscura in Nigeria and its meal for growing children.
    Description: Includes:- 2 tables.;16 refs.
    Keywords: Fisheries ; Parachanna obscura ; Nigeria ; Calabar ; Proximate composition ; freshwater environment ; Proteins ; Body conditions ; Moisture ; Ash content
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    Lipid profile and blood by-products of deformed and healthy African mud catfish (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23507 | 19325 | 2018-05-08 15:28:31 | 23507 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Study was conducted to investigate lipid profile and metabolites in deformed (lost one or both pectoral fins) and healthy (both pectoral fins intact) African mud catfish C. gariepinus using three groups of adults male and female with a mean weight and standard length of 822.17~c 48.75g and 42.55~c.26cm respectively. The fish were allotted in replicates to 5000m capacity tanks based on the presence or absence of pectoral fins. 1mL blood was drawn from caudal peduncle of each fish by means of disposable sterile syringe and centrifuged at 1000rpm for 20min at 40C. Cholesterol and total protein were determined using the cholesterol FL (CT F400CH) and total protein (TP 0500CH) kits. Serum albumin and globulin concentrations were determined following methods described by Tietz (1995) and Buckley et al., (1976) while total serum bilirubin concentration was measured as outlined by AACC (American Association of Clinical Chemistry). Results indicate that male fish had relatively higher amount of triglyceride while female fish had higher amounts of cholesterol, reduction in globulin of the deformed fish, reduction in the concentrations of albumin in healthy fish, increase in total protein and globulin levels and high urea concentrations. No total bilurubin was detected in any of the fish sampled thus an indication of good liver function which means there was no liver dysfunction or liver damage in the fishes. It is evident therefore that abnormal fish can still perform better if they are given intense management because of the variability in their blood constituents with the normal fishes which is used to assess their health is minimal. Keywords: Blood, Cholesterol, Deformed, Healthy, C. gariepinus.
    Description: Includes:- 2 tables.;30 refs.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; Badagry ; freshwater environment ; Lipids ; Blood ; Cholesterol ; Metabolites
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    African Regional Aquaculture Centre Library: information resources and services (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23513 | 19325 | 2018-05-08 15:39:43 | 23513 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Effective research development is no doubt information driven and ARAC library remains the place to easily access accurate and reliable information. There is an urgent need to acquire and maintain its information resources in order to provide globally acceptable information. The production of validated research literatures by ARAC staff goes to show that the library has made itself relevant to scientist in achieving their mandate to ARAC. This Paper examines the resources and services rendered by the African Regional Aquaculture Centre library in meeting the needs of research Scientist, students and stakeholders in Aquaculture practice in the Niger Delta Nigeria. It describes the establishment of TEEAL and OARE service within the library and examines the research interest of scientist and library users with emphasis on their research areas.
    Description: Includes:-2 tables.;2 figs.;10 refs.
    Keywords: Aquaculture ; Information Management ; Nigeria ; Port Harcourt ; freshwater environment ; Information services
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    The comparative effect of fish and blood meal based diets on the growth and survival of juvenile tilapia (Oreochromis niloticus) in concrete tank (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23508 | 19325 | 2018-05-08 15:31:05 | 23508 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: An experiment was carried out to find out the comparative effect of imported fish meal, blood meal and local fish waste based diets on the growth and survival of juvenile tilapia. (O. niloticus) in concrete tank. Four diets consisting of N.I.O.M.R. pelleted feed containing 40% CP, with imported fish meal, as the control and three others formulated with fresh, boiled cattle blood and local fish waste meal at 30% CP, were fed to juvenile tilapia with average initial weight of 55.24g in four treatments and four replicates in a completely randomized design. Result indicated final body weights of 100.83, 96.54, 98.4 and 86.82g and average body length of 18.47, 18.16, 18.4 and 18.14cm, for treatments 1 (control), 2 (fresh blood based diet), 3 (boiled blood based diet) and 4 (local fish waste meal based diet) respectively, with no significant difference between the treatments (P〉0.05). The same was also true for average daily weight gain of 0.41, 0.36, 0.31 and 0.28g. However, treatment 1 and 2 had better relative weight gain 93.69 and 80.21%, than 3 and 4 at 62.37 and 64.85% respectively, (P〈0.05). The survival was 100% in all treatments. Treatment 2 was more cost effective at N539.06/Kg fish, followed by 1 with N667.52. Treatments 3 and 4 had the highest at N698.20 and N718.60 per kg fish. The trial showed that tilapia feed processed with fresh cattle blood performed as well as imported fish meal, boiled blood and local fish waste and in addition was more cost effective.
    Description: Includes:- 6 tables.;11 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; Port Harcourt ; Feed evaluation ; freshwater environment ; Feeding experiments ; Diets ; Nutritional requirements ; Survival ; Growth rate
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    Enforcement of inland fisheries regulations and law in Oyo State (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23514 | 19325 | 2018-05-08 15:41:07 | 23514 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The study assesses the enforcement of Inland Fisheries Regulations and Laws in Oyo State. This was done with a view to ascertaining the existence of regulations and laws that govern the inland waters of the state; the agents that are responsible to carry out the enforcement and the problems militating against the effectiveness of enforcement in the state, in order to provide relevant information for policy formulation and management of fishery resources. Information was gathered from secondary sources which include edicts for the state, journals and mass media reports. Personal interview with government fisheries officials and fishermen was also conducted. The research findings revealed that Oyo State has only fishing by-laws. The study also reveals that fishermen's co-operatives were the enforcement agents in the state. There was no record of arrest during the period of the study. Problems such as non- availability of surveillance and arresting equipment, lack of trained law enforcement fisheries officers were identified. The paper elaborates on possible management strategies of inland waters as a prelude towards increased fish production in the State.
    Description: Includes:- 11 refs.
    Keywords: Fisheries ; Law ; Nigeria ; Oyo State ; freshwater environment ; Legislation ; Fishery industry legislation ; Fishery regulations
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    Micro-credit: financing fish production in Nigeria - a review (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23516 | 19325 | 2018-05-08 15:44:14 | 23516 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Microfinance refers to loans, savings, insurance, transfer services and other financial products targeted at low-income people. Artisanal fishing is a crucial source of livelihoods in developing nations, particularly for low-income families in rural areas where job options are limited. Nigeria depends heavily on revenues from natural resources, especially oil hence income from fishing is particularly important to Nigeria. Aquaculture is also being practiced with a growth rate that has increased over the years. Sources of funding for the operators of these sectors of the economy who are mostly poor peasants will ensure sustainable production and income generation. Informal microfinance groups have existed before the advent of formal microfinance. Microfinance institutions in Nigeria operate in an environment that is dominated by commercial banks. However, their high deposit rate makes them attractive to the low income group. This paper examines the emergence of microfinance institutions, their contributions to fisheries and aquaculture and constraints to be overcome to enable them serve the fisheries and aquaculture sector better.
    Description: Includes:- 1 fig.;14 refs.
    Keywords: Fisheries ; Management ; Nigeria ; freshwater environment ; Financial institutions ; Financial resources ; Financing ; Fisheries ; Fishery economics ; Fishery management
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    Fish trading: a tool for socioeconomic enhancement and poverty alleviation (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23519 | 19325 | 2018-05-08 15:49:39 | 23519 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A study was conducted in Abeokuta, the Ogun State capital with the objective to investigate if fish trading could be a tool of poverty alleviation and socio-economic enhancement of the status of women in the household. A total of 120 correctly completed, structured and pre-tested questionnaires, out of the 150 administered to respondents, were retrieved for data analyses. Demographic data of the traders showed that all the respondents were women whose ages ranged from 15 to above 45 years. The ages of 33-45 years constituted 33.3% of the respondents while the age bracket of between 27-32 years constituted 23.3%. Majority (73.3%) were married while 25% were single-headed households (divorced or widowed). The study revealed that most of the respondents (approximately 61%) were able to meet their family expenditure jointly with their spouses while 28.3% of the respondents met the financial responsibilities of their families solely from the profit. Access to credit was found to be a major limitation. The study further revealed that 86.7% of the respondents would like to continue with the business because they were satisfied with the profit accruable to them from the trade.
    Description: Includes:- 3 tables.;19 refs.
    Keywords: Management ; Fisheries ; Nigeria ; Abeokuta ; Poverty alleviation ; freshwater environment ; Marketing ; Market research ; Women ; Fisheries
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    Policy and policy framework for growth of women's fisheries activities: accessing micro credit facilities for women in fisheries development as a fundamental human right (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23517 | 19325 | 2018-05-08 15:46:10 | 23517 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This paper begins with a review of policy issues on status of women’s fundamental human rights and the effects on their optimal participation in fisheries development. The focus of the paper is on the importance of women in fisheries activities within the fisheries industry. Issues pertaining to gender inequality in the rural communities affecting women in the fisheries sector, and solutions to overcome some of these issues are discussed. The degree of participation of women in the fisheries sector is an overall reflection of the cultures, the laws of the country and the priority given by the state to ensure gender equity. Generally, women in Nigeria, especially those from depressed fisheries households, participate actively in many fisheries activities, including aquaculture. However, the lower status accorded to women in many of the communities in Nigeria means that their contribution to fisheries is undervalued and unrecognized. Issues that need to be addressed with regards to participation of women in fisheries which include sensitivity to gender issues in fishery, improve living conditions, promote programs relating to women, reconsidering the practice of relating fishing rights to their right to speak and others are discussed in the paper The paper also looks at the possibilities of articulating measures in sensitizing the womenfolks through education, especially in knowing their fundamental human rights as specified by the UN’s articles, especially ability to access micro-credit in fisheries activities, the nature of loans and alternative strategies to tackle the problem of small-scale credit to women in fisheries development in the nation.
    Description: Includes:- 2 tables.;2 figs.;12 refs.
    Keywords: Fisheries ; Sociology ; Nigeria ; Ibeju Lekki ; freshwater environment ; Women ; Fishery policy ; Financial institutions ; Financial resources ; Financing
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    Women's participation in lower Ikpa River fisheries of Akwa Ibom State, Nigeria: a case study of Ifiayong (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23523 | 19325 | 2018-05-09 12:27:39 | 23523 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Ifiayong is a small local village market where economically and commercially important fin and shellfishes are landed. It is located very close to the Five Star and Ibom Le Meridian Hotels at Nwaniba beach. Women functioned as transporters, sorters, processors, financiers, distributors and marketers of the thirty-two finfish families, seven shellfish species together with three turtles (reptiles) encountered at the study site. Socio-economic survey revealed that ninety-four women modally aged 46-55years (34; 36.17%) participated in the fisheries and frequently communicated in Efik (40; 42.55%), and were mostly drop-outs (40; 40.56%) in educational level and polygamous (35; 38.30%). The modal family size was 11-15 persons (45; 47.87%) who invested N 41,000 - N 50,000 (28; 29.79%). Problems encountered by these women together with the corresponding solutions and appropriate recommendations proffered were highlighted with the aim of making Ifiayong a revenue generating and tourism centre for Uruan Local Council and Akwa Ibom State Government.
    Description: Includes:- 1 table.;1 fig.;28 refs.
    Keywords: Management ; Fisheries ; Nigeria ; Ikpa R. ; freshwater environment ; Marketing ; Financing ; Women
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    Management implications of sex ratios of three palaemonid shrimp in the Cross River Estuary, south eastern Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23529 | 19325 | 2018-05-09 12:51:48 | 23529 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Information on sex composition of fish/shellfish species is important in determining reproductive potentials and estimating size structure of a given stock. Sustainable fisheries management options and policies usually rely on this aspect of the reproductive biology. In the present study, the sex ratios of three palaemonid shrimps, Macrobrachium macrobrachion, Macrobrachium vollenhovenii and Macrobrachium equidens were studied over an annual cycle with respect to gear type. Male: female relationship for M. macrobrachion caught with beach seine, pushnet and trap were 1:2.2, 1:2.1 and 1:2.15 respectively, while the M:F ratios for M. vollenhovenii were 1:1.27 (beach seine), 1:1.32 (pushnet) and 1:1.64 (trap). The overall M:F ratios during the annual cycle were 1:2.15 (M. macrobrachion), 1:1.47 (M. vollenhovenii), and 1:1.74 (M. equidens). The monthly sex ratios indicated that there were more females than males during the period, except for M. equidens which had a ratio of 1:0.78 in the month of August. This is advantageous for the stock dynamics of the species, especially if the males could mate with more than one female during any reproductive season.
    Description: Includes:- 1 table.;11 refs.
    Keywords: Biology ; Fisheries ; Macrobrachium equidens ; Macrobrachium macrobrachion ; Macrobrachium vollenhovenii ; Nigeria ; Cross River Estuary ; brackishwater environment ; freshwater environment ; Sex ratio ; Shrimp fisheries ; Reproductive cycle ; Population structure
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    Climate change: implications for fisheries and coastal aquaculture (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23531 | 19325 | 2018-05-09 13:01:07 | 23531 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A keynote address at the 25th annual conference of the Fisheries Society of Nigeria. The paper presented evidence of climate change in the past and discussed the issue of global warming in the past, present and future. The Greenhouse effects are some of the topics discussed. Discussed in greater detail is the Nigerian situation in the global warming and climate change. The potential impacts on aquaculture has been enumerated. The paper is concluded by given suggestionswhich mitigate the impact of climate change and called on the Federal Ministry of Environment to strengthen research and other arms of government to create a strong synergy to work towards ameliorating the impact of climate change in the country.
    Description: Keynote address at the 25th Annual Conference of the Fisheries Society of Nigeria. Includes:- 2 tables.;6 figs.;6 plates;12 refs.
    Keywords: Aquaculture ; Ecology ; Fisheries ; Nigeria ; brackishwater environment ; freshwater environment ; marine environment ; Climatic changes ; Fisheries ; Aquaculture
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    Shellfish resources in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23528 | 19325 | 2018-05-09 12:49:35 | 23528 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Nigeria is a coastal state with a coastline of 853km which lies between 4o 10’ to 6o20’N and longitude 2o 45’ to 8o 5’ E. The Nigerian coastline stretches from the Western border with the Republic of Benin to the eastern border with the Cameroon Republic. Some of the coastal characteristics which are of importance to the Nigerian inshore demersal fisheries are the presence of thirty-six estuaries and the prominent Niger Delta which provides suitable habitat for the penaeid shrimps, finfish and other living marine resources. Nigeria has a wide variety of shellfish resources ranging from the molluscs such as ark clams (Senila senilis), cockles costatum), periwinkle (Tympanotonus fuscatus) to the crustaceans which includes the penaeidae (shrimps), palaemonidae (prawns), portunidae (swimming crabs) and palinuridae (lobsters). Estimated potential yield for shellfishes is 51,760 metric tonnes. Shrimps and prawns have the highest commercial importance with production estimate between 10,000 to 15,000mt. More than half of this figure is exported to the Organization for Economic Co-operation and Development (OECD) countries with shrimp market valued at US $8.6 billion. Nigeria generated about US $54million in 2005 from export of shrimps and prawns alone. This figure decreased to about US $38million in 2007 due to harassment by sea pirates and militant groups thus decreasing production from 13,767mt in 2006 to an alarming 5,995mt in 2007. However more research needs to be done to ascertain the true potential yield and environmental carrying capacity of the Nigerian shellfisheries to determine the maximum sustainable yield (MSY) so as to prevent over exploitation and consequently the destruction of the fishery. Research should also be carried out on other shellfish resources such as crabs, oysters, periwinkles and lobsters as appreciable income could be earned from their sales and export.
    Description: Includes: 2 tables.;1 fig.;11 refs.
    Keywords: Biology ; Fisheries ; ASE ; Nigeria Coast ; marine environment ; Shellfish fisheries ; Crustacean fisheries ; Mollusc fisheries
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    Culture trial of (Peneaus) Penaeus monodon in concrete tank (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23527 | 19325 | 2018-05-09 12:48:12 | 23527 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Culture trial of the Tiger Shrimp (Peneaus monodon) was carried out in one of the grow-out concrete tanks at Nigerian Institute for Oceanography and Marine Research, Victoria Island, Lagos. A total of 264 post larvae of P. monodon (PL 30) produced at the Institute’s shrimp hatchery complex were used for the experiment which lasted for 157 days. Coppens Catco feed of 0.8 - 1.2mm size was used to feed the post larvae throughout the duration of the experiment. The results showed that the shrimps grew from an initial mean body weight of 1.763g at stocking to 19.538g at the end of the experiment. The daily growth rate was 0.113g/day while specific growth rate was 1.532 %. Food Conversion Ratio (FCR) was 3.362 while survival rate was 90%. The study has shown that P. monodon can be successfully cultured in concrete tanks. However further studies aimed at improving growth rate will be undertaken.
    Description: Includes:-2 tables.;5 plates.;15 refs.
    Keywords: Aquaculture ; Peneaus monodon ; Nigeria ; Lagos ; freshwater environment ; Shrimp culture ; Crustacean culture ; Aquaculture
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    Effect of smoking duration on the microbiological quality of cold-smoked Atlantic cod, Gadus morhua (Linnaeus, 1758) (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23491 | 19325 | 2018-05-06 13:02:08 | 23491 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study evaluated the effect of varying smoking durations of 6, 6.5, 7 and 7.5 hours on the microbiological quality and percentage moisture content of cold-smoked Atlantic Cod, Gadus morhua. The fish sample were cold-smoked using the traditional drum oven. Four batches of the smoked fish were stored in metal baskets at ambient temperatures for a period of 12 days and assessed for Staphylococcus aureus and Escherichia coli loads, Mould count, Total Plate Count and Total Coliform Count. Analyses of the smoked fish samples were carried out at the initial stage (day 0) and subsequently every alternate days (i.e. days 2, 4, 6, 8, 10 and 12). Significant variations (P 〈 0.05) were obtained for all the microbial counts on the four smoked fish samples. The best microbiologically stable cold-smoked samples were that smoked at the longest duration of 7.5 hours. This produced the least mean microbial load range of TPC (1.50 x 103 - 2.00 x 105cfu/g); TCC varied from 0.0MPN/g to 12.0 MPN/g ; Mould count (1.32 x103 - 2.55 x 105 cfu/g) and Staphylococcus aureus (3.0 x103 - 1.35 x 105cfu/g) while percentage moisture content ranged between 25.3% to 15.2%. All the samples tested negative to Escherichia coli.
    Description: Includes:- 2 tables.;15 refs.
    Keywords: Fisheries ; Gadus morhua ; Nigeria ; Ogun State ; marine environment ; Microbial contamination ; Curing ; Processing fishery products
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    Growth, survival rate and condition factor of Heteroclarias hatchlings fed cultured Moina micrura, shell free Artemia and combination of both as starter feed (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23503 | 19325 | 2018-05-07 12:27:24 | 23503 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Growth (Percentage weight gain, Specific growth rate , total body length), survival rate and condition factor of Heteroclarias fry fed shell free Artemia, cultured Moina micrura and mixture of both as starter feed were investigated. 30 individual fry were placed in a 4-litre plastic bowl in three treatments of 3 replicates for 25 days in Fish Hatchery. Individual water quality parameters (water pH, temperature, Dissolved oxygen, total Alkalinity and carbon dioxide) monitored for each treatment were not significantly different (p〉0.05) from each Heteroclarias fry fed live M. micrura had the highest percentage weight gain (496.03%), Specific growth rate (3.09), percentage survival rate (88.83%) and condition factor (39.75) but these results were not significant different (P〉0.05) from those of shell free Artemia except those of condition factor. Shell free Artemia and Live M. micrura combination was observed to have the lowest fry Percentage weight gain (428.30%),. specific growth rate(2.54), % survival rate (85.50), condition factor(24.39) and total body length(1.52cm). The highest total body length was observed in shell free Artemia although not significantly different (p〉0.05) from others. The implication of using cultured live M. micrura instead of shell free Artemia as starter diet for Heteroclarias hatchlings at the critical stage of development are discussed
    Description: Includes:- 6 figs.;16 refs.
    Keywords: Aquaculture ; Heteroclarias ; Moina micrura ; Nigeria ; Keffi ; freshwater environment ; Growth rate ; Survival ; Condition factor ; Feeding experiments ; Fish culture
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    Haematological profile of blood of African catfish (Clarias gariepinus, Burchell 1822) fed sunflower and sesame meal based diets (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23506 | 19325 | 2018-05-07 12:32:20 | 23506 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The effect of substituting soybean meal with raw sunflower and sesame seed meal was evaluated using haematological indices of Clarias gariepinus fed the diets containing sunflower and sesame seed meal. Seven isonitrogeneous and isocaloric diets containing sunflower and sesame seed meal replacing soybean meal at a rate of 15, 30 and 45% were prepared. A diet without replacement of soybean meal served as control. The result of fish fed test diets showed significant (P〈0.05) difference over the fish fed control diet with respect to PCV and mean corpuscular volume (MCV). Fish fed control diet had the lowest Hb, PCV, WBC, RBC, MCV, MCHC, ESr. There was no significant difference (P〉0.05) in the fish fed control diet and test diets with respect to MCH, MCHC, ESr, Neutrophil, Monocytes, Eusinophils and Lymphocytes. Hence it can be concluded that the haemotological parameter of Clarias gariepinus is not significantly (P〉0.05) changed with increase dietary inclusion of raw sunflower and sesame seed meal.
    Description: Includes:- 4 tables.;22 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Akure ; freshwater environment ; Feeding experiments ; Fish culture ; Diets ; Nutritional requirements ; Haematology
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    Growth response of Clarias gariepinus (Burchell 1822) juveniles fed diets containing raw Mucuna utilis seed meal (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23505 | 19325 | 2018-05-07 12:31:00 | 23505 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Feeding trial was conducted in static water to assess the growth of Clarias gariepinus fingerlings fed different inclusion levels of Mucuna seed meal (MSM). Raw MSM was used at 10%, 20% and 30% inclusion levels and the performance of fish fed these diets was compared with the fish fed soybean-based diet which contained 40%protein. All diets were prepared to be isonitrogenous and isocaloric. A four by six factorial experiment with three replicates using ten fish each of average initial weight of 6.6g was carried out. Daily fish ration of five percent body weight was administered two times for twelve weeks. The specific growth rate (SGR) in diet 1 (control) was significantly (p〈0.05) higher than the other dietary groups and worsens as inclusion level increased similar trend was also observed in the food conversion ratio (FCR) and protein efficiency ratio (PER). The significantly lower growth performance of fish fed diets containing raw MSM might be due to the presence of anti-nutritional factors present raw MSM. The possibility of improving this trend through processing should be investigated.
    Description: Includes:- 3 tables.;14 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Osogbo ; freshwater environment ; Feeding experiments ; Fish culture ; Diets ; Growth rate
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    Growth of Clarias gariepinus juveniles fed five commercial feed (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23504 | 19325 | 2018-05-07 12:29:55 | 23504 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Clarias gariepinus juveniles 6.35 ~C 0.22 g weight were fed five different commercial diets for 105 days to determine growth rates. Diets were hand distributed in triplicate groups of 30 fish once daily. The diets used were Coppens, Multifeed, Eurogold, Vittal and Ajanla feeds. At the end of the experiment, the final mean weight for Coppens, Multifeed and Eurogold were 181.54 ~c 0.63 g, 179.92 ~c 0.95 g and 139.92 ~c 0.26 g respectively, while final mean weight for Vital and Ajanla were 110.11 ~c 0.23 g and 119.03 ~c 0.35 g respectively. The statistical analysis of the results showed that there were significant differences (P〈0.05) in the mean final weights. Also there was no significant difference (P〉0.05) in the mean final weight between Coppens and Multifeed. The specific growth rates (SGR) were 3.19% day-1 3.18 % day-1 and 2.94% day-1 for Coppens Multifeed and Eurogold respectively and 2.71% day-1 and 2.78% day-1 respectively for Ajanla and Vital. There were significant differences (P〈0.05) in SGR among treatments and no significant difference (P〉0.05) between SGR of Coppens and Multifeed. Based on these findings, it was concluded that feed with macronutrient combinations of 45% CP, 12% crude fat, crude fiber, 1.5%, Ash 9.5% promoted better growth rates in C. gariepinus juveniles as compared with other combinations.
    Description: Includes:- 2 tables.;21 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeriaa ; Port harcourt ; Feed trial ; Feed evaluation ; freshwater environment ; Feeding experiments ; Fish culture ; Feed efficiency ; Feed
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    Effects of replacement of fishmeal with palm grub (Oryctes rhinoceros Linnaeus, 1758) meal on the growth of Clarias gariepinus (Burchell, 1822) and Heterobranchus longifilis (Valenciennes, 1840) fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23510 | 19325 | 2018-05-05 13:09:20 | 23510 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Clarias gariepinus (0.73 ~c 0.01g) and Heterobranchus longifilis fingerlings (0.67 ~c 0.01g) were fed five isonitrogenous diets of about 40% crude protein, with varying levels (0-100%) of palm grub meal for 12 weeks. At the end of the study, C. gariepinus and H. longifilis fingerlings fed 25% palm grub inclusion diet had the highest weight gain (5.30g and 4.05g respectively), relative (726.0% and 595.6%) and specific (1.09% and 1.00%) growth rates while those fed 100% palm grub inclusion diet showed least growth; weight gain (2.68g and 2.15g), relative (367.1% and 316.2%) and specific (0.80% and 0.45%) growth rates respectively. Food conversion and protein efficiency were also best in fingerlings fed 25% palm grub meal diet (0.70 and 1.35 for C. gariepinus; 0.75 and 1.35 for H. longifilis respectively) with decreasing efficiency as palm grub inclusion level increased in the diets. The differences in the growth and nutrient utilization of the fingerlings on the various diets were generally insignificant (p〉0.05) above 25% inclusion level of palm grub. The study showed that palm grub can be used to completely replace fish meal in mudcatfish diets. However, for optimal growth and nutrient utilization, 25% level of replacement of fish meal with palm grub meal is most adequate in C. gariepinus and H. longifilis fingerlings diets.
    Description: Includes:- 7 tables.;2 figs.;12 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Heterobranchus longifilis ; Oryctes rhinoceros ; Nigeria ; Ibadan ; freshwater environment ; Feeding experiments ; Growth rate ; Fish culture ; Diets
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    Lysine requirement and its effect on the body composition of Oreochromis niloticus fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23512 | 19325 | 2018-05-08 15:38:22 | 23512 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The study was carried out to investigate the lysine requirement and its effect on the body composition of Oreochromis niloticus fingerlings. Two hundred and seventy fingerling O. niloticus (9.01 -11.09g) were reared in 35L plastic troughs. Six diets were formulated, containing 35% crude protein. The diets were formulated with ingredients deficient of lysine (Groundnut cake -3.23g lysine/100g diet and guinea corn -1.9g lysine/100g diet) for O. niloticus having whole body content of 7.51g lysine/100g protein. The diets consist of a basal diet (Diet I, no added lysine), while the test diets (II, III, IV and V) had 4.56g, 6.87g, 7.30g, 7.41g lysine/100g protein respectively. The reference diet was made of Clupeids (mixture of Pellonula afzeliusi and Physalia pellucida), groundnut cake and guinea corn but no added lysine (5.37g lysine/100g protein). The fish were fed twice daily (0900 and 18.00hrs) at 3% body weight for 56 days. There was significant difference in the mean weight gain and food conversion efficiency (P〈0.05). The four levels of lysine resulted in quadratic responses (P〈0.05). Calculation using regression equations from the relationship between the specific growth rate, weight gain and lysine levels show that lysine requirement for fingerling was 7.12g/100g protein respectively. The requirement of O. niloticus for lysine is 7.12g lysine/100g protein.
    Description: Includes:-6 tables;18 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; New Bussa ; freshwater environment ; Lysine ; Feeding experiments ; Diets ; Feed composition
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    Proximate composition of some commercial fish feeds sold in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23511 | 19325 | 2018-05-08 15:37:02 | 23511 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A study was undertaken to analyse and compare with manufacturers’ declaration the nutrient content of some feeds available in Nigeria through proximate analysis. The commercial fish feeds collected from the markets were Adolf Calyx, Coppens, Dizengoff and Durante. Proximate composition such as moisture, crude protein, crude lipid, ash, fibre and NFE (nitrogen free extract) were analysed. In general, there was variation between analysed and company declared nutrient contents of different feeds especially the protein and lipid content of the feeds. Apart from Adolf Calyx, all the analysed feeds had protein contents of above 40% which is good for catfish production as recommended by the manufacturer. Keywords: Proximate composition, Commercial fishfeeds, Adolf Calyx, Coppens, Dizengoff, Durante.
    Description: Includes:- 2 tables.;15refs.
    Keywords: Aquaculture ; Nigeria ; Makurdi ; Proximate analysis ; Feed evaluation ; freshwater environment ; Moisture ; Ash content ; Proteins ; Lipids ; Diets ; Feed ; Feed efficiency
    Repository Name: AquaDocs
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    The opinion of fishermen and customers (fish buyers) on middlemen of Doro-Baga fish market, Borno State (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23518 | 19325 | 2018-05-08 15:48:25 | 23518 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The study examined the opinion of fishermen and fish buyers on middlemen of Doro Baga fish market. 240 respondents were used as samples with the aid of structured questionnaire, using stratified random sampling technique. Descriptive statistics was used to analyze the data obtained. The study revealed that majority of the fishermen (75%) highly depend on these selling brokers to sell their fish for them because their financial support comes from the selling brokers, moreover they do not have a stand in the market. Among the fish buyers, especially those that buy directly for consumption, see the brokers as people that create confusion during transaction. But 55% of the fish buyers believed that brokers keep the business flowing through their support of the fishermen. While the major problem of the fishermen with the selling brokers is getting the loan from the brokers especially when the fisherman is new in the area or business and on the other side, brokers only give the fish buyers grace of two to three days when they don’t have money, after that the broker would sell the fish to another buyer. These problems can be solved when a strong relationship is established between the fishermen, selling brokers, and fish buyers, or when the government intervenes by giving loans to the fishermen.
    Description: Includes:- 3 figs.;3 refs.
    Keywords: Fisheries ; Management ; Nigeria ; Doro ; Middlemen ; freshwater environment ; Fishermen ; Marketing ; Market research ; Pricing
    Repository Name: AquaDocs
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    Gender and fisheries of Lake Kainji, Nigeria: a review (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23515 | 19325 | 2018-05-08 15:42:14 | 23515 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The paper examined gender and fisheries of Lake Kainji, Nigeria. The study highlights socio economic characteristics of women involved in Kainji Lake fisheries, important issues about gender and fisheries. It reveals that the categories of women in the Kainji Lake fisheries are in the middle age of 31 to 40 years with very low educational background. It also indicates that fish processing has been the most prominent activity of women in fisheries of Lake Kainji and constitute about 60 percent of the women. The study concludes that women play significant roles in all aspects of fisheries in Lake Kainji. Importantly, women’s roles span reproduction and production.
    Description: Includes:- 1 table;! fig.;13 refs.
    Keywords: Fisheries ; Nigeria ; Kainji L. ; freshwater environment ; Women ; Fisheries ; Processing fishery products
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    Length-weight relationship and condition factor of two Hydrocynus species in Lake Kainji, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23520 | 19325 | 2018-05-08 15:51:20 | 23520 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: In the study and understanding of fish biology, characterization and morphology, the length-weight relationship is of great importance. The genus Hydrocynus, is of high economic importance to the fisheries of Lake Kainji. This study investigated their length-weight relationship to establish the growth pattern of species within this genus. The ‘b’ values of the length-weight relationship for these species are less than 3. There was negative allometric growth (b〈3) for all samples of the Hydrocynus species. The correlation coefficients (r) are 0.9713 and 0.9888, for Hydrocynus forskali and H.brevis respectively. Condition factors ranged from 1.313 for H. forskali to 1.431 for H. brevis.
    Description: Includes:- 2tables.;2 figs.;27 refs.
    Keywords: Ecology ; Fisheries ; Hydrocynus forskalii ; Hydrocynus brevis ; Nigeria ; Kainji L. ; freshwater environment ; Length-weight relationships ; Condition factor
    Repository Name: AquaDocs
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    Sources and uses of micro-credit in poverty alleviation among fish farmers in Osun State, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23521 | 19325 | 2018-05-09 12:23:43 | 23521 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Aquaculture is one of the fastest growing food production systems in the world, Nigeria inclusive with the bulk of its output currently being produced within developing countries and with expectations for aquaculture sustainable food security and poverty alleviation. However, poverty which is a social condition characterised by the inadequacy of access to basic human needs for the maintenance and socially acceptable minimum standards of living is still prevalent. One of the major obstacles to achieving the objectives of poverty reduction through aquaculture is the inadequate credit facilities to boost production. The study therefore, this study investigates the sources and uses of micro-credit in poverty alleviation among fish farmers in Osun state, Nigeria. A two stage random technique was used to select 137 respondents from the three Osun State Agricultural Development Programme (ADPs) zones. Structured questionnaire was used to collect data on demographic characteristics, Micro-credit sources and use, occupational, income and fish production data. Data was analysed using descriptive statistics, FGT and logit model. The result shows that both formal and informal micro-credit sources were used in the area studied with high interest rate militating against the adequate use of some of the micro-credit sources. Poverty alleviation through micro-credit use will increase efficiency through the use of modern effective and efficient technology leading to greater production. The policies aimed at making micro-credit readily available should be focused on to alleviate poverty among fish farmers
    Description: Includes:- 4 tables.;1 fig.;12 refs.
    Keywords: Aquaculture ; Management ; Nigeria ; Osun State ; Microfinace ; freshwater environment ; Financial management ; Socioeconomic aspects ; Sociological aspects
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    Privatization: a policy to transform and increase the production capacity of fish in Nigeria fish industries (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23524 | 19325 | 2018-05-09 12:30:42 | 23524 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Over 200 hatcheries of fish exist in Nigeria with at least two hatcheries in each state of the federation but unfortunately over 50 percent are either non-functional or function far below their optimum production capacities. Also about 85 percent of the non-functional hatcheries belong to the government (-either federal, state, local government or institution). The associated problems with the non-functional hatcheries include: inadequate funding, poor maintenance of hatcheries facilities, high cost of feed inputs, in adequate infrastructure, differential growth and cannibalism in catfishes which result in poor fingerling harvest, low attitude and lack of commitment to government work. Privatization/ownership options are considered the best options for this paper and clues to solve the problems mentioned above through privatization are presented. Problems with privatization and private investment are also discussed. It was advised that in case the existing hatcheries are put in to full production, the national demand for fingerlings which is placed at 4.3 billion annually could be met with ease. Fingerlings production in the hatchery as the quickest revenue yielding aspect of fish farming (with high internal rate of returns and short pay back period) capable of attracting revenue within 2-3 mouths of a breeding exercise are emphasized.
    Description: Includes:- 10 refs.
    Keywords: Aquaculture ; Nigeria ; Privatization ; Hatchery ; freshwater environment ; Hatcheries ; Seed production ; Fish culture ; Fishery development ; Development projects
    Repository Name: AquaDocs
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    The rise of peri-urban aquaculture in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23533 | 19325 | 2018-05-10 09:40:52 | 23533 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The paper traced aquacultural development in Nigeria to the colonial period in 1950s with fish farming in tilapias during which more than 200 small scale subsistence level ponds were built with some growth continuing in the rural areas. There was a bloom in farming of catfishes in 2000. The interest shown by private fish farmers has been identified as a propelling factor for aquacultural development in Nigeria. The development of private fish hatcheries has been another factor leading to the growth of aquaculture. The paper noted that social capital and its development either directly or indirectly can be identified as contributing to the success of the sectors. The increasing profit from aquaculture has led to fish farmers increasing beyond 5000 tonnes in 2009. The paper highlighted the numerous advantages which led to the expansion of the industry in Nigerian villages.
    Description: FISON EKO 2010: Invited paper. Pagination on document pp. 1-15 Include:- 1 table.;16 figs.;14 refs.
    Keywords: Aquaculture ; Nigeria ; brackishwater environment ; freshwater environment ; marine environment ; Aquaculture ; Fish culture ; Aquaculture development
    Repository Name: AquaDocs
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    Developing shellfish industry in Nigeria: technology and economics (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23534 | 19325 | 2018-05-10 09:44:16 | 23534 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The paper asserted that shellfish resources are poorly developed and utilized in West Africa. This was proved by the fact that in 2008 total marine shellfish capture production in West Africa was only 29,815 tonnes. The advantages of Nigeria in beefing up its production are highlighted. Some of these advantages are on extensive coast line which has not been affected by industrial pollution. The tropical climate is also an advantage for growing of cultured shellfish. The paper highlighted that to maximize the potential of shellfish Mari-culture development requires education, training, seed production technology, grow-out technology, processing and marketing. These requirements are discussed in details in the paper.
    Description: FISON EKO 2010: Invited paper Includes:- 3 tables.;9 figs.;60 refs.
    Keywords: Biology ; Aquaculture ; ASE ; Nigeria ; Coast ; marine environment ; Shellfish ; Shellfish culture ; Shellfish fisheries
    Repository Name: AquaDocs
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    Challenges to meeting best procedure in quarantine services delivery (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23536 | 19325 | 2018-05-10 10:07:34 | 23536 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The paper defined quarantine as the totality of measures taken by every country to prevent the entry of foreign exotic pest, pathogens and diseases of plant, animals and aquatic resources through international boundries. Also discussed is the international regulatory framework on quality control and quarantine of agricultural products. The advantages and socioeconomics impact of quarantine are discussed. The paper further examined the best practice procedure in quarantine service delivery in the aquatic resources and products right from production, processing, marketing and condition for exporting of aquatic (Live fish) from Nigeria, In conclusion the paper enumerated the challenges in meeting best practice procedures in quarantine service delivery
    Description: Paper delivered at the Agricultural Quarantine Services (NAQS) Paramilitary Training for Officers and Men, Jaji, Kaduna, 15-29 ?, 2009 Presented at FISON EKO 2010: Other materials. Pagination on document pp. 1-18
    Keywords: Fisheries ; Health ; Nigeria ; Quarantine ; freshwater environment ; marine environment ; Quarantine regulations ; Legislation ; Safety regulations
    Repository Name: AquaDocs
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    Effects of ice storage on the biochemical composition of Macrobrachium vollenhovenii (Herklots, 1857) (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23530 | 19325 | 2018-05-09 12:53:10 | 23530 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Changes in biochemical properties of freshwater prawn stored with two ice conditions Without Direct Contact with Ice (DCI) and Without Direct Contact with Ice (WCI) for day 0, 2, 4, 6, 8 and 10 were investigated. Proximate composition defined in terms of moisture increased for the DCI as storage days increases but relatively constant with treatments with WCI. Values of TVB-N (mgN/100g) in prawn stored with DCI had inverse relationship with storage days but increased with storage days in the WCI. Changes in the values of ash and crude protein were relatively constant as the storage days increased in both treatments. Ice treatments recorded little changes in between storage days for fats. Values of NPN mgN/100g decreased with days of storage with DCI but increased as the storage increased with WCI. These results obtained in this study showed that ice storage may have contrasting values and importance on the biochemical properties of the freshwater prawn.
    Description: Includes:- 2tables.;16 refs.
    Keywords: Fisheries ; Macrobrachium vollenhovenii ; Nigeria ; Badagry Lagoon ; freshwater environment ; Storage ; Storage effects ; Biochemical composition ; Storage life
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    Fisheries training in Nigeria's tertiary institutions - curriculum, staffing, equipment and other facilities: a critique of NUC’S minimum benchmark academic standards (MBAS) document (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23532 | 19325 | 2018-05-10 09:37:28 | 23532 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The paper is a review of the curriculum, staffing, equipment, field and laboratory requirements prescribed by the National Universities Commission (NUC) for training of Fisheries graduates. This is made as these are guidelines against which Fisheries programmes, now being proliferated in many Nigerian tertiary institutions, can be evaluated for possible accreditation. The critique shows that some courses are highly under-weighted e.g. “Aquatic Flora and fauna” as a 2 credit unit. There is a high degree of overlap between courses. Some are not clearly and sharply delineated, defined or described. Staff needs are not defined or described. Staff needs are not defined in terms of core course areas of specialization. Limnology & Oceanography have their descriptions restricted to physico ? chemical features and not viewed in the desired comparative perspective. Suggestions are made on a wider listing of equipment, field laboratory, and library need to sharpen the NUC guideline. A review committee is recommended.
    Description: FISON EKO 2010: Invited Paper. Pagination on document pp. 1-23 Includes:- 17 refs.
    Keywords: Education ; Fisheries ; Information Management ; Nigeria ; brackishwater environment ; freshwater environment ; marine environment ; Education ; Curricula ; Training ; Fisheries
    Repository Name: AquaDocs
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    Legal tools for combating piracy in Nigerian waters (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23535 | 19325 | 2018-05-10 09:53:19 | 23535 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The paper traced the evolution of piracy and pointed out that the fishing industry in Nigeria alone has recorded over 15 deaths and loss of vessels, equipments, fish/fishery products valued over N3 billion to these attacks between 2006 and April 2009. The paper further highlighted that between February 2009 and April 2010 the fishing industry has recorded about 80 attacks. These have affected the fishing industry which operated over 250 registered trawlers in 2003/2004 which has now been reduced to 150 trawlers. To ameliorate this problem the paper highlighted steps taken in dealing with the menace of piracy. The paper concluded that good laws are a necessary pre-condition for the achievement of maritime security. However, they will only be effective if there is the political will and the practical capacity among the government, relevant agencies and stakeholders.
    Description: FISON EKO 2010: Invited paper presented by N. Ahmed. Pagination on document pp. 1-13. First presented by M. Orakwusi at the 2nd Western Naval Command Law Seminar, 7 Oct 2010
    Keywords: Fisheries ; Law ; ASE ; Nigeria Coast ; Priracy ; marine environment ; Illegal fishing ; Fishery protection ; Fishing rights
    Repository Name: AquaDocs
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    Effect of imported feed and local feed on growth performance of tilapia (Oreochromis niloticus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24170 | 19325 | 2018-05-13 18:50:52 | 24170 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A number of 60 Juveniles of Oreochromis niloticus were stocked and divided into two plastic ponds of 0.90m by 0.60 in dimension respectively with initial total weight of 120g.The juveniles were two months and half old as at the time of collection and they were fed with 4mm of the feeds. Each pond contains thirty Oreochomis niloticus which were fed with local feeds, and coppens feed. After weighing the fishes in the two ponds, there was significant difference in the average weight and length, in which the pond that was fed with coppens has the highest average weight and length of 140g and 15.62cm respectively. The quality of the water was checked by measuring pH, dissolved oxygen and temperature of the water using water aquaculture kit. Model: FF-1 A.CAT No. 2430-0. The mortality rate was 0%, while the survivability rate was 100%.
    Description: Includes: 2 tables.;Also includes: 5 references.
    Keywords: Aquaculture ; Ecology ; Oreochromis niloticus ; Nigeria ; Lagos ; freshwater environment ; Feed ; Freshwater fish ; Growth rate ; Length-weight relationships ; Pond culture ; Water quality ; Artificial feeding ; Feeding experiments ; Fish culture ; Survival ; Mortality
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    Design of pumping station for a tidal fish farm in Niger Delta, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24173 | 19325 | 2018-05-13 18:55:18 | 24173 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The design of pumping station for submersible FLYGT pump 3102 version LL to redress the water supply problem of some ponds in the tidal fish farm of African Regional Aquaculture Centre (ARAC) located in Omuihuechi, Aluu, Rivers State, Nigeria was carried out. Prior to the design baseline study was carried out for the proper sitting of the pumping station. The topographic survey of the area indicated gentle sloping woodland, with the highest and lowest elevations of 11.00 m and 1.00 m respectively. The mean peak heights of water in the supply canal during spring and neap tides ranged from 0.95 to 1.45 m and 0.38 to 0.86 m respectively. The flood tide and ebb tide velocities of supply canal water flow varied from 0.40 to 0.75 m/s and 0.75 to 0.92 m/s respectively. Soil particle size analysis indicated loamy clay and clay soils. The results of pumping station design were 1.80 m (length), 1.30 m (width); 3.60 m (height),0.15 m (thickness), I (cement) : 2 (sand) : 4 (gravel) (concrete mixture ratio) and 12 mm (reinforcement bar). Results of pump characteristic calculation were 0.069 m〈sup〉3〈/sup〉/s (discharge) ,4.02 m/s (pumping velocity), 5.73 m (total dynamic head), 0.82 m (minimum submergence depth), 5.04 KW (pump power)and 0.40 and 0.30 m ( clearances from floor and wall respectively). The results obtained were considered adequate for the purpose of construction of the pumping station for the pump and the procedures adopted will assist in similar design tasks in the development of fish farms in the Niger Delta Region of Nigeria and beyond.
    Description: Includes: 4 tables and 4 figures.;Also includes: 20 references.
    Keywords: Aquaculture ; Limnology ; Nigeria ; Niger Delta ; freshwater environment ; Fish culture ; Pump stations ; Tidal inlets ; Fish ponds ; Construction ; Construction materials ; Design ; Topography ; Soils ; Water pumps ; Aquaculture equipment
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    Review of crude oil pollution effects on fish and fisheries of Nigerian waters (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24177 | 19325 | 2018-05-13 19:01:32 | 24177 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This paper reviews some adverse effects of crude oil pollution on fish and fisheries in Nigerian waters. The main causes of spillage include blowout, sabotage, corrosion of pipeline, equipment malfunction, operations/maintenance error etc. There are spillage records from 1976 to 1997 with respect to the yearly oil spill incidents, the sizes of spill in relation to the ecological operational areas and the causes of oil spills in relation to sources of oil spill within oil operation. Based on the observation from the analyses of the spillage reports, several steps were recommended in order to reduce the incident of crude oil spillage in Nigeria petroleum industry for the safety of our fragile water bodies and the fisheries resources stock in them.
    Description: Includes: 3 tables.;Also includes: 14 references.
    Keywords: Pollution ; Fisheries ; Nigeria ; Niger Delta ; freshwater environment ; Crude oil ; Pollution effects ; Water quality ; Oil spills ; Pipelines ; Lake fisheries ; Oil pollution ; Pollution surveys ; Pollution control
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    The use of hapa as an improved system for culturing of Clarias gariepinus fry (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24176 | 19325 | 2018-05-13 18:59:45 | 24176 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fry management in aerated and non aerated aquarium and hapa system were determined in Fish Hatchery of Faculty of Agriculture, Shabu Lafia to assess condition factor, percentage survival rate, total body length and percentage weight gain. 200 hatchlings of Clarias.gariepinus fry were put into a 35 x 30 x 15cm aquarium with aerator and without aerator; hapa with aerator and hapa without aerator in 3 replicates. The hapas were made of brown colour plankton net. The fry were fed with 5% of their body weight with Artemia shell free four times daily for the period of sixteen days. Temperature(27.45 ~c 0.05~'C), pH (7.56 ~c 0.03); Dissolved oxygen (8.20 ~c 0.03 mg/L), total alkalinity (l5.36~c 0.03 mg/L) and Free carbon dioxide (4.30 ~c 0.03 mg/L) monitored in each of water quality parameter of the various treatments was not significantly different from each other. The Percentage weight gain (1117 and 1067), percentage survival rate (92.83 and 91.33), total body length(l.07 and 1.07cm) and condition factor (11.99 and 11.44) of C. gariepinus fry in hapa system (aerated and non aerated respectively) are significantly(p〈0.05) higher than those of aquarium in the study although they are not significantly different (P〉0.05) from each other. The use of hapa as an improved system for mass production of C. gariepinus fry is highly recommendable in the large body of water.
    Description: Includes: 1 table and 4 figure.;Also include: 7 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Nasarawa State ; Aquarium ; Aerator ; Fry ; Hatchlings ; Hapa ; Hapa ; freshwater environment ; Fish culture ; Freshwater fish ; Fry ; Hatcheries ; Condition factor ; Survival ; Length-weight relationships ; Aquaculture techniques ; Comparative studies ; Cage culture
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    Evaluation of slurry formulations for processing of kilishi of bony tongue (Heterotis niloticus, Cuvier) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24178 | 19325 | 2018-05-13 19:03:41 | 24178 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The kilishi of Heterotis niloticus was produced for determination of appropriate slurry formulations for fish kilishi preparation. Thirty six freshly caught samples of H. niloticus with average weight of 306.20 ~c 18.33g, kilishi of this species was prepared with three different slurry formulations of high (F1), medium (F2) and low (F3) proportions of groundnut dough to spice mixture in the ratio of 1.3: 1.0, 1.0: 1.2 and 1.0: 1.8, respectively. Results of proximate composition indicated that kilishi of the H. niloticus prepared with formulation 3 (F3) recorded significantly higher (p〈0.05) protein content (54.22 ~c 0.01 %) and lower lipid content (8.00 ~c 0.00%), despite recording significantly higher (p〈0.05) moisture content (9.93 ~c 0.07%). Sensory score of kilishi of H. niloticus processed with F3 formulation rated significantly higher (p〈0.05) for taste, flavour and general acceptability with mean scores of 5.94 ~c 0.21,5.77 ~c 0.20 and 5.50 ~c 0.22, respectively. It could be concluded that kilishi of H. niloticus prepared with F3 formulation was the most acceptable hence, recommended for use in kilishi production.
    Description: Includes: 4 tables.;Also includes: 20 references.
    Keywords: Fisheries ; Heterotis niloticus ; Nigeria ; Sokoto ; Kilishi ; Heterotis niloticus ; Spices ; Proximate analysis ; Organoleptic assessment ; freshwater environment ; Freshwater fish ; Fishery products ; Processing fishery products ; Drying ; Packing fishery products ; Organoleptic properties ; Water content ; Enzymes ; Microorganisms
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    Aquaponics: a new trend in food production (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24175 | 19325 | 2018-05-13 18:58:18 | 24175 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The increase in population coupled with current and escalating extent of soil degradation, water scarcity and climate-related challenges plaguing agricultural productivity in every corner of the world and particularly in Nigeria demands for alternative food techniques, one of them called aquaponics. This paper highlights a new trend in food production techniques for the production of fish and vegetable crops in aquaponics. Aquaponics is experiencing renewed interest worldwide with many small home growers and large operations employing the process as a means of producing sustainable fish and plant crops. The design of this scalable farming system closely mirrors that of recirculating systems in general, with the addition of a hydroponic component and the possible elimination of a separate biofilter and devices for removing fine and dissolved solids. The benefits of aquaponics includes conservation of water resources and plant nutrients, intensive production of fish and reduced operating costs relative to either system in isolation. Aquaponics, without doubt is a practice that is receiving considerable interest due to an ever increasing need for fresh wholesome food and sustainable eco-friendly agricultural practices.
    Description: Includes: 3 figures.;Also includes: 12 references.
    Keywords: Aquaculture ; Nigeria ; Ibadan ; Aquaculture ; Hydroponics ; Recirculating system ; Sustainable ecosystem ; Natural fertilizer ; Aquaponics ; freshwater environment ; Plant culture ; Sustainable development ; Environmental impact ; Food security ; Aquaculture development ; Organic fertilizers ; Recirculating systems ; Agropisciculture ; Water resources ; Conservation ; Aquaculture techniques ; Fish culture
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    The status of fish genetics and breeding towards sustainable aquaculture in Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24202 | 19325 | 2018-05-16 15:26:01 | 24202 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This paper, fish genetics and breeding in Nigeria addresses the application of genetics and breeding to fish farming with the view to enhanced aquaculture production in Nigeria. This production technique is not limited to the use of conventional breeding programs nor is it necessary to go through the basic developmental steps of selection and isolation that lead to the domestication and diversification of livestock and crops over thousands of years. With modern molecular genetic techniques and induced breeding, it is now possible to develop and create new fish species .
    Description: Includes: 12 references
    Keywords: Aquaculture ; Nigeria ; Delta State ; freshwater environment ; Genetics ; Sustainability ; Induced breeding ; Biotechnology ; Seed (aquaculture) ; Aquaculture techniques ; Fish culture
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    The role of biotechnology in aquaculture and fisheries development (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24204 | 19325 | 2018-05-16 15:29:46 | 24204 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Biotechnology per se is not a panacea for the world's problems of hunger and poverty. However, genetic engineering in particular, offers outstanding potentials to increase the efficiency of animal improvement. Thus, biotechnology could enhance global food production and availability in a sustainable way. Case studies from Egypt and India also demonstrate that highly immune genetically modified fishes, transgenic fishes, chromosome engineering and gene banking are very appropriate for fish farmers and consumers in developing countries. As the entire technology can be packaged into the germ cells of fish, it can easily be integrated into traditional small-holder fish farming systems. Except for a few innovative transfer projects, though, the application of biotechnology until now remains concentrated in the industrialized world. Combined with insufficient own scientific and regulatory capacities, the increasing privatization of international aquacultural and fisheries research and the strengthening of intellectual property rights complicate the access of developing countries to biotechnology. Profound constitutional adjustments are therefore essential to ensure that biotechnology does not bypass the poor.
    Description: Includes: 15 references.
    Keywords: Aquaculture ; Fisheries ; Nigeria ; Ebonyi State ; freshwater environment ; Biotechnology ; Sustainability ; Genetically modified organisms ; Gene banks ; Fish culture ; Aquaculture development ; Food security
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    Effects of biofouling on shellfish aquaculture (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24205 | 19325 | 2018-05-16 15:31:07 | 24205 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The culture of oysters, clams, scallops, and other molluscs is collectively one of the fastest growing sectors of the aquaculture industry. An inherent issue with shellfish culture methods, particularly for off-bottom culture (i.e. floating trays, racks, long lines, strings, rafts), is biofouling. This can occur directly, by biofouling of the animals themselves, or indirectly, by fouling of cages, nets, filters, and other equipment. Problematic biofouling species have been identified and segmented into six groups: algae, barnacles, mussels, tubeworms, ascidians and hydroids. Controlling and mitigating biofouling can result in significant costs for commercial shellfish culture operations.
    Description: Includes: 1 table and 1 figure.;Also includes: 14 references.
    Keywords: Aquaculture ; Engineering ; Algae ; Barnacles ; Mussels ; Tubeworm ; Ascidians ; Hydroids ; Nigeria ; Port Harcourt ; Epibiosis ; Filter feeding ; Competition for food ; Aquatic invaders ; Marketability ; brackishwater environment ; Fouling ; Shellfish culture ; Methodology ; Off-bottom culture ; Cages ; Nets ; Filters ; Comparative studies ; Fouling organisms ; Fouling control
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    Microbial load on smoked fish sold in Ibadan, Oyo State (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24208 | 19325 | 2018-05-19 06:39:34 | 24208 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The microbial load of four different fish species from five different market locations in Ibadan metropolis were determined using standard microbiological procedures. The bacteria count of fish sampled from Ojo market was the highest while the bacteria count of the fish sample from Bodija market was the lowest. There was no significant difference (p〈0.05) in the microbial load of the fish sampled from various market locations in Ibadan metropolis. Similarly, there was no significant difference (p〉0.05) in the microbial load on various fish species sold in Ibadan metropolis. The isolated bacteria from the study were: E. coli, Salmonella spp, Klebsiella spp, Staphylococcus aureus, Aerosomonas spp, Pseudomonas spp, Vibrio spp, Serratia spp, Chromobacterium spp, Enterobacteria spp and Shigella spp. The fungi count of fish sampled from Omi markets was the highest while the fungi count of the fish sampled from Ojo market was the lowest. The following fungi were however isolated from the study: Aspergillus flavus, Penicillium spp, Fusarium oxysporum, Trrichoderma spp and Ceotrichium albidium. The study shows that reheating may be necessary to destroy or inactivate micro-organisms in smoked fish before consumption.
    Description: Includes: 2 tables and 2 figures.;Also includes: 17 refernces.
    Keywords: Fisheries ; Nigeria ; Ibadan ; Bacteria ; Fungi ; Market ; Fish species ; freshwater environment ; Microbial contamination ; Microorganisms ; Bacteria ; Freshwater fish ; Cured products ; Sample contamination ; Fungi ; Public health ; Quality assurance ; Disinfection
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    Morphometric features and proximate body composition of rocky freshwater prawn (Caridina africana, Kingsley 1882) at Erin-Ijesa waterfalls, Osun State Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24209 | 19325 | 2018-05-19 06:41:34 | 24209 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: An investigation was conducted on the morphometric features and proximate body composition of rocky freshwater prawn, Caridina africana occurring at Erin-Ijesa Waterfalls in Osun State, Nigeria. The adult prawns were collected at the first layer of the Waterfalls using scoop nets and locally fabricated sieves because of the shallow nature of the water body and tiny size of the species. Morphometric features were measured using measuring board and Vernier calipers while the proximate analysis was determined by atomic absorption spectrophotometry in the laboratory. The morphometric variables placed the species correctly into the Infra order Caridea and family Atyidae because the first and second chelipeds were shorter than the remaining three pairs of walking legs. Male prawns were significantly bigger (p〈0.05). than the females as revealed in the morphometric features. The proximate analysis showed that C. africana is composed of 58.79% protein, 5.42% lipid, 11.56% carbohydrate, 14.7% ash and 0.21 % crude fibre. The micro-nutrient composition included iron, zinc, copper, nickel and cadmium. The values for these nutrients make the study to suggest that C. africana could be a nutritive food bio-material for humans and other livestock nutrition especially the fin-fish aquaculture programme.
    Description: Includes: 2 tables.;Also includes: 11 references.
    Keywords: Biology ; Fisheries ; Caridina africana ; Nigeria ; Erin-Ijesa waterfalls ; Morphometrics ; caridina africana ; Proximate composition ; Micrinutrient ; Erin-Ijesa waterfalls ; freshwater environment ; Morphometry ; Biochemical analysis ; Shrimp fisheries ; Body conditions ; Nutritional requirements ; Nutritive value ; Lake fisheries ; Artisanal fishing ; Males ; Females
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    Food and habits of the Batrachoid, Batrachoides liberiensis off the Qua Iboe River estuary, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24223 | 19325 | 2018-05-19 07:09:15 | 24223 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: We studied the trophic attributes of the toadfish, Batrachoides liberiensis off the Qua Iboe River estuary Nigeria, between August 2008 and July 2009. The fish species has no well defined stomach; the intestine was used as gut. Gut contents analysis of 360 specimens of the toad fish revealed that 11 food items (Penaeus notialis, Sersama alberti, crayfish remains, unid fish, fish bones, fish remains, unid gastropod, insect remains unid clam and sand grains)] were ingested. The food items were re-assigned into 6 major ecological categories based on food ponderal index (%FPI): Pisces (FPI= 35.33%), Crustacea (FPI= 20.73%), unid Gastropoda (FPI=14.32%), Mollusca (FPI= 12.48%), Insecta (FPI= 11.64%) and FPI of 5.50% sand grains. Males were significantly higher in feeding intensity (Average gut fullness, AGF: t = 2.083, 358 df, P〈0.05) vis-a-vis the females. There were similarity in rank-order of the seasonal dietaries (spearman-rank correlation: rs = 0.871, P〈0.02). Sex ratio was male-biased. B. liberiensis in the Qua Iboe estuary is carnivorous, exhibiting affinity to piscine as major dietaries.
    Description: Includes: 11 references.
    Keywords: Ecology ; Fisheries ; Batrachoides liberiensis ; ASE ; Nigeria ; Iboe River. ; Batrachoides liberiensis ; Qua Iboe River Estuary ; Nigeria ; Trophic attributes ; brackishwater environment ; Food ; Feeding ; Stomach content ; Food consumption ; Artisanal fishing ; Fishery surveys ; Food composition ; Food preferences ; Brackishwater fish
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    Effect of zinc on the distribution of major cations and anions in the muscle of the fresh water catfish Clarias gariepinus (Burchell, 1822) collected from Ebonyi River, South East Nigeria (2021)
    Lagos (Nigeria) | FISON
    In:  http://aquaticcommons.org/id/eprint/24214 | 19325 | 2018-05-19 06:50:34 | 24214 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effect of zinc exposure evaluated during a four day exposure periods at 13.88ppm, 26.75ppm, 53.5ppm,107ppm and 214ppm to Clarias gariepinus sub-adults showed the 96h LC50 as 26.62ppm. The threshold value was 20.30ppm. The muscle of the exposed fish analyzed showed a significant decrease in all the major cations and anions (Na+, CL-, Ca2+ K+, Mg2+) at (p〈0.05). The research revealed that there was no total inhibition of uptake of the cations and anions and also that uptake of these metals, that is cations and anions (Na+,-CL-, Ca2+ K+, Mg2+) increased rapidly during the 24 hours and dropped at 48 hours and 72 hours and gradually increased at the end of 96 hours showing that it was time dependent. During exposure period, affected fish stood in upright position with their snouts above the water surface, gasping for air. Observation of the exposed fish showed that they were peeling of skin, increase in opercula movement, erratic swimming, quietness and finally death. This research therefore recommends that zinc should be applied appropriately at 26.30ppm to avoid death of fish, man and other aquatic organisms that are the chief consumer.
    Description: Includes: 13 references.
    Keywords: Pollution ; Fisheries ; Clarias gariepinus ; Nigeria ; Ebonyi State ; Ebonyi River ; Zinc ; Muscle ; Cations ; Anions ; Clarias gariepinus ; Zinc ; Freshwater fish ; Cations ; Pollution effects ; Trace metals ; Bioaccumulation ; Muscles ; Pollutants ; Anions ; River fisheries ; Lethal limits
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    Organoleptic assessment of processed freshwater clam (Galatea paradoxa) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24186 | 19325 | 2018-05-16 14:43:21 | 24186 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Organoleptic characteristcs and eating acceptability of different processed fresh water clam (Galatea paradoxa) from Bayelsa state, Nigeria was evaluated. One hundred and fourteen (114) samples of clam (Galatea paradoxa) used for the processing experiment were obtained from Amassoma market. All samples were processed traditionally viz: smoked-dried, cooked with banga sludge and fried respectively. Thirty six (36) member taste panel were randomly selected to evaluate the organoleptic characteristics of the samples. Acceptibility of product was scored on a 6-point hedonic scale. The highest ratings of organoleptic characteristics were recorded for fresh water clam samples prepared by frying (5.24 ~c 0.54) while the least (4.47 ~c 0.27) was recorded for samples that were prepared by cooking with water (P〈0.05). The results revealed that males had a preference for fried clam product while females had equal preference for clams fried and cooked in palm kernel sludge. The highest acceptability (88.89%) was observed in the samples that were subjected to frying method, while the least (80.56%) was recorded for samples that were smoked-dried. More research should be geared towards packaging these products for export.
    Description: Includes: 3 tables:;Also includes: 9 references.
    Keywords: Fisheries ; Galatea paradoxa ; Nigeria ; Niger Delta ; Acceptability ; Clams ; Organoleptic ; Processing ; freshwater environment ; Clam fisheries ; Shellfish ; Organoleptic properties ; Acceptability ; Processed fishery products ; Evaluation ; Cured products ; Acceptance tests ; Nutritive value ; Proteins ; Texture ; Odour ; Taste tests ; Freshwater molluscs ; Product development
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    Nutrient composition of frozen and smoked fish specimens of Oreochromis niloticus, Labeo coubie and Mormyrops deliciosus from River Niger (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24195 | 19325 | 2018-05-16 15:12:41 | 24195 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fish is one of the most nutritious diet on earth, and contributes a considerable proportion of its protein to the Nigerian populace. Fifty-four specimens composing of six samples from each species, were analyzed in frozen and smoked states, monthly. Each set of six specimens were cut into two equal parts and randomly re-arranged into two groups. One group was smoked while the other was preserved in the freezer (at-2~'C) for 5 days. The highest moisture content was observed in frozen samples of Mormyrops deliciosus thus: (77.14 ~c 11.05%). Smoked O. niloticus had the highest protein content (26.79 ~c 0.74%) while the least was observed in frozen Mormyrops deliciosus (13.37 ~c 2.57%). Smoked samples of Oreochromis niloticus recorded the highest fat content accounting for a value of (25.97 ~c 0.51 %) while the least was observed in frozen Mormyrops deliciosus (7.97 ~c 0.45%). It could be concluded that while frozen samples loosed nutrient, smoked ones gained nutrients in all three species. The study recommends that fish be consumed in their smoked state, in preference to frozen ones, in response to higher nutritive value. Oreochromis niloticus which recorded the highest nutritive value in crude protein content, should be consumed more, followed by Labeo coubie and Mormyrops deliciosus in that order.
    Description: Includes: 2 tables.;Also includes: 10 references
    Keywords: Fisheries ; Mormyrups deliciosus ; Oreochromis niloticus ; Labeo coubie ; Nigeria ; Niger R. ; Nutrient omposition ; Frozen ; Smoked ; Oreochromis niloticus ; Labeo coubie ; Mormyrups deliciosus ; freshwater environment ; Freshwater fish ; Frozen products ; Cured products ; Nutritive value ; Comparative studies ; Processed fishery products
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    Trophic ecology of fishes: consolidating the basic (traditional) methods (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24226 | 19325 | 2018-05-19 07:15:01 | 24226 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Studies of food and feeding ecology are important to investigate trophic interrelationships of fishes in their resident water bodies. These are usually achieved using various important methods. However because no single measure gives an overall representation of the feeding habits of fish, best results are achieved only when methods are used to complement one another. This paper reviews various methods used in studying trophic fish ecology and suggests consolidation of the traditional or basic methods with relevant statistical indices and local ecological knowledge. More advanced methods are also proposed as valuable tools because they compensate for some possible errors that may arise from the use of quantitative methods.
    Description: Includes: 28 references.
    Keywords: Ecology ; Fisheries ; Nigeria ; Oyo State ; freshwater environment ; Ecosystems ; Trophic levels ; Interspecific relationships ; Trophic relationships ; Food ; Ecology ; Consolidation ; Methodology ; Feeding behaviour ; Stomach content ; Food webs ; Statistical analysis ; Fish culture
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    Reproductive efficiency as a function of age in estuarine catfish, Chrysichthys nigrodigitatus of the Cross River, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24206 | 19325 | 2018-05-16 15:35:04 | 24206 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Study was conducted on the reproductive efficiency of Chrysichthys nigrodigitatus of the Cross River. The objective was to determine the influence of age on eggs size and fecundity. Forty four females of Chrysichthys nigrodigitatus were sampled from April, 2011 to March, 2012. Fecundity and eggs size were measured in relation to fish size. The relationship between egg size and fish size produced a parabolic curve. This implies that younger fish and older fish were less efficient in terms of eggs size and quality while the middle aged fishes were more efficient in terms of eggs size and quality. Similarly, there was an inverse curvilinear relationship between number of eggs per unit weight and somatic weight of the fish. Younger fish are less efficient because of the physiology of growth, while the older fishes are less efficient because of reproductive senescence. Management strategy for the stock therefore requires the conservation of the middle aged individuals for increase in reproduction. Also in aquaculture the middle aged class should be used as broodstock for excellent results.
    Description: Includes: 2 figures.;Also includes: 13 references.
    Keywords: Ecology ; Fisheries ; Chrysichthys nigrodigitatus ; Nigeria ; Cross River ; Brackishwater fish ; Reproduction ; Efficiency ; Biological age ; Eggs ; Fecundity ; Size ; Food fish
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 216-218
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