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  • 101
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    Overview of current fish consumption and fish processing in Southeast Asia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26862 | 23782 | 2019-11-05 03:30:34 | 26862 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Following a brief account of the food fish supply in the Southeast Asian region, details are given of per capita fish consumption in the following countries: Brunei, Indonesia, Malaysia, Philippines, Singapore and Thailand. The disposition of the marine fish landed and fish quality improvement are also discussed.
    Keywords: Fisheries ; Fish consumption ; Quality control ; South East Asia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 59-61
    Format: 3
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  • 102
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    General introduction to marine processed products in Japan (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26864 | 23782 | 2019-11-05 03:26:43 | 26864 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The marine fishery catch for Japan in 1984 was over 12 million tonnes; the sardine catch was high, although Alaska pollack showed a decrease. A brief account is given of imports and export, both worldwide and for Japan, examining also factors affecting changes in the Japanese markets for fish and fish products.
    Keywords: Fisheries ; Trade ; Industrial products statistics ; Processed fishery products ; Market research ; Japan
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 63
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  • 103
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    Cryoprotective effects of chemicals on proteins of fish muscle (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26865 | 23782 | 2019-11-05 03:25:17 | 26865 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: A review is made of studies conducted on cryoprotectants for use in the frozen storage of processed fishery products, such as surimi. Some 150 compounds were screened for cryoprotective effects on fish actomyosin; the findings of experiments investigating the behaviour of carp actomyosin, and fish myosin, actin and other constituent proteins during frozen storage are described. The mechanism of freeze denaturation and of the effects of cryoprotectants is outlined and the application of cryoprotectants in the development of new fish gel products considered.
    Keywords: Chemistry ; Fisheries ; Food technology ; Product development ; Freezing storage
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 64-67
    Format: 4
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  • 104
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    Utilization and post-harvest technology of sardine, in relation to nutrition and health (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26863 | 23782 | 2019-11-05 03:28:23 | 26863 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Fish consumption in Japan is very high compared with other countries; it is approximately 96 g daily per capita and provides a good balance of protein, fats and oils, and carbohydrates. The largest component of the fish catch in Japan is sardine; attempts are being made to produce new products, other than the traditional forms, such as surumi. In fatty sardine fish, the characteristic components include polyunsaturated fatty acids which lower the blood cholesterol levels; in particular eicosapentaenoic acid lowers the incidence of adult diseases such as myocardial infarction.
    Keywords: Fisheries ; Food fish ; Public health ; Japan ; Sardinella
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 62
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  • 105
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    A case history of fish jelly product development in Sarawak, Malaysia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26866 | 23782 | 2019-11-05 03:20:33 | 26866 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The development of fish jelly processing in Sarawak, Malaysia, a technique first introduced in 1984, is discussed. Socio-economic factors affecting the development of the industry are examined, considering attitudes, preference, and standard of living. The importance of technology transfer in the region as a means of further developing the fish jelly processing industry is stressed.
    Keywords: Fisheries ; Food technology ; Product development ; Sarawak ; Malaysia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 75-77
    Format: 3
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  • 106
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    Effect of trading time on the quality of fish traded at Navotas Fishing Port Complex (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26870 | 23782 | 2019-11-05 03:11:15 | 26870 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The Navotas Fishing Port Complex in Manila Bay, Philippines and its harbour and market operations are described in detail. The findings are presented of an assessment study conducted regarding the fish quality in the trading halls; quality was found to improve with night-time trading as opposed to day-time trading.
    Keywords: Fisheries ; Trade ; Marketing ; Quality control ; Philippines
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 91-94
    Format: 4
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  • 107
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    Microbiology in quality control: Cockle depuration in Malaysia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26871 | 23782 | 2019-11-05 03:05:49 | 26871 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Development of the cockle industry in Malaysia is discussed, with respect to problems regarding quality control. Activities conducted concerning the establishment of depuration plants to purify the cockles prior to sale are outlined, considering also bacteriological testing to show purification to acceptable limits.
    Keywords: Fisheries ; Self purification ; Seafood ; Quality control ; Cardiidae ; Malaysia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 95-96
    Format: 2
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  • 108
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    Satay fish and other traditional fish products development in Malaysia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26869 | 23782 | 2019-11-05 03:14:28 | 26869 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Development activities in the traditional fish processing industry in Malaysia during the past two decades are outlined. Satay fish, keropok, dried/salted fish, and belacan products are detailed.
    Keywords: Fisheries ; Dried products ; Food technology ; Processed fishery products ; Product development ; Malaysia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 87-90
    Format: 4
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  • 109
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    Utilization of trawl by-catch for the development of surimi and surimi-based products (1979-1987) (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26867 | 23782 | 2019-11-05 03:18:36 | 26867 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Details are given of research activities conducted by the Marine Fisheries Research Department of Singapore regarding the use of small demersal fish (trawling by-catch) for the production of comminuted products. The production of frozen surimi and fish jelly products are described and technology transfer activities by the Department to the fish processing industry also outlined.
    Keywords: Fisheries ; Minced products ; Food technology ; Product development ; Singapore
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 78-80
    Format: 3
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  • 110
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    Inventory of fish products in Southeast Asia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26873 | 23782 | 2019-11-05 03:07:22 | 26873 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The findings are presented of a questionnaire conducted in Southeast Asia regarding fish products available, their quality and constraints to their marketing and promotion. Most quality problems were concentrated in the category of traditional products -- particularly smoked, dried and fermented items. The application of such information is identifying available products and highlighting and overcoming certain problems is considered briefly.
    Keywords: Fisheries ; Quality control ; Processed fishery products ; Market research ; South East Asia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 99
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  • 111
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    Development of minced fish industry in Thailand (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26868 | 23782 | 2019-11-05 03:16:59 | 26868 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Development in minced fish technology in Thailand has involved the improvement of machinery to replace manpower, the development of new processing techniques and the improved utilization of underutilized species. Socio-economic factors are examined, considering the increase in price of raw material, an increase in employment and consumer benefits. Technology transfer is also outlined.
    Keywords: Fisheries ; Minced products ; Food technology ; Product development ; Thailand
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 81-86
    Format: 6
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  • 112
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    Shellfish in Indonesia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26877 | 23782 | 2019-11-05 02:57:47 | 26877 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: An account is given of present shellfish production in Indonesia, indicating the species involved, collection methods, production and value, and utilization.
    Keywords: Fisheries ; Shellfish ; Fishery industry ; Indonesia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 28-32
    Format: 5
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  • 113
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    Occurrences of red tide in Brunei Darussalam and methods of monitoring and surveillance (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26875 | 23782 | 2019-11-05 03:03:18 | 26875 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Details are given of red tides which occurred in Brunei Darussalam, 1976 and 1980. Methods of monitoring are described which included plankton sampling, aerial surveillance and toxicity tests.
    Keywords: Fisheries ; Health ; Toxicity tests ; Food poisoning ; Red tides ; Public health ; Dangerous organisms ; Brunei Darussalam
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 17-24
    Format: 8
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  • 114
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    Fermented fish products in Thailand (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26872 | 23782 | 2019-11-05 03:09:43 | 26872 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Details are given of fermentation processes involved in the production of fermented fish in Thailand, considering in particular conditions to speed up the process and also examining factors which play an important role in determining the aroma, flavor and color of the finished product. The quality of the fermented product depends on the species and quality of the fish used and also the techniques used; good quality products result if the proportion of salt to fish is 1:2 and the temperature for incubation 25-30°C.
    Keywords: Fisheries ; Fermented products ; Food technology ; Quality control ; Thailand
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 97-98
    Format: 2
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  • 115
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    Toxic red tides and shellfish toxicity in Southeast Asia: Proceedings of a consultative meeting held in Singapore 11-14 September 1984 (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26874 | 23782 | 2019-11-05 02:41:48 | 26874 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The occurrence of toxic red tides and paralytic shellfish poisoning (PSP) have become more frequent in Southeast Asian waters in recent years. A consultative meeting was organized by the Southeast Asian Fisheries Development Center (SEAFDEC) and the International Development Research Centre (IDRC) of Canada on 11-14 September 1984 to review the status of shellfish toxicity in Southeast Asia and discuss ways and means for its improved study and control. It was attended by 28 officials and researchers from Brunei Darussalam, Canada, Indonesia, Japan, Malaysia, Philippines, Singapore, and Thailand, including participants from the International Center for Living Aquatic Resource Management, IDRC and SEAFDEC. This volume resulted from the meeting and provides, for the first time, a review of past problems and current research on the subject. It includes edited papers, recommendations and conclusions of the meeting. The papers describe the background related to PSP and red tide in the region as well as the measures taken to protect consumers. Also included are resource papers outlining conditions in Canada and Japan and the protective measures which have been adopted by the two countries.
    Keywords: Fisheries ; Health ; Conferences ; Fish poisoning ; Red tides ; Shellfish ; Dangerous organisms ; South East Asia
    Repository Name: AquaDocs
    Type: book
    Format: application/pdf
    Format: application/pdf
    Format: 133
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  • 116
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    Distribution of dinoflagellates at Jakarta Bay, Taman Jaya, Banten, and Benoa Bay, Bali: A report of an incident of fish poisoning at eastern Nusa Tenggara (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26876 | 23782 | 2019-11-05 03:00:12 | 26876 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: A description is given of an incident of fish poisoning in East Nusa Tenggana in November 1983, which resulted from a red tide. Sampling studies were made to investigate the distribution of dinoflagellates in Jakarta Bay, Taman Jaya, Banten, and Benoa Bay, Bali. Four genera were observed: Noctiluca, Ceratium, Dinophysis and Peridinium.
    Keywords: Fisheries ; Health ; Fish kill ; Red tides ; Public health ; Dangerous organisms ; Indonesia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 25-27
    Format: 3
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  • 117
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    Status of shellfish toxicity and related problems in Malaysia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26878 | 23782 | 2019-11-05 02:56:01 | 26878 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: A brief review is made of the current status regarding shellfish toxicity and red tide occurrence in Malaysia.
    Keywords: Fisheries ; Health ; Toxicity ; Shellfish ; Red tides ; Public health ; Dangerous organisms ; Malaysia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 33-34
    Format: 2
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  • 118
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    Lethal effect of paralytic shellfish poison (PSP) from Perna viridis, with notes on the distribution of Pyrodinium bahamense var. compressa during a red tide in the Philippines (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26880 | 23782 | 2019-11-05 02:52:29 | 26880 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: A study was conducted to determine the potency of the dinoflagellate toxin accumulated in green mussels, Perna viridis, in the Philippines. The results are also presented of a plankton survey undertaken in order to study the distribution and abundance of the red tide causing alga, Pyrodinium bahamense var. compressa.
    Keywords: Fisheries ; Health ; Biological poisons ; Shellfish ; Toxicity tests ; Red tides ; Bioaccumulation ; Public health ; Dangerous organisms ; Philippines ; Perna viridis
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 43-51
    Format: 9
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  • 119
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    Shellfish poisoning in association with the occurrence of potentially toxic dinoflagellates in the Gulf of Thailand (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26884 | 23782 | 2019-11-05 02:26:02 | 26884 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: A study was conducted to detect the causative organisms of paralytic shellfish poisoning in Thailand waters and to observe the occurrence of the toxic bloom and red tides in the toxic shellfish beds.
    Keywords: Fisheries ; Health ; Public health ; Red tides ; Shellfish ; Dangerous organisms ; Medicine ; Gulf of Thailand
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 87-89
    Format: 3
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  • 120
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    Detoxification of Pyrodinium-generated paralytic shellfish poisoning toxin in Perna viridis from Western Samar, Philippines (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26882 | 23782 | 2019-11-05 02:34:08 | 26882 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The results are presented of procedures for the detoxification of paralytic shellfish poisoning toxin using ozone, chlorine and PVP-iodine. Findings indicate ozone and PVP-iodine to effectively inactivate the toxins isolated from Perna viridis; however, further investigations are recommended.
    Keywords: Fisheries ; Health ; Biological poisons ; Red tides ; Public health ; Philippines ; Pyrodinium ; Perna viridis
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 80-85
    Format: 6
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  • 121
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    Indo-Pacific toxic red-tide occurrences, 1972-1984 (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26886 | 23782 | 2019-11-05 02:20:40 | 26886 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: A brief review is made of the incidences of red tides and paralytic shellfish poisoning in the Indo-Pacific region during the period 1972-84, indicating the organisms involved in the toxicity.
    Keywords: Fisheries ; Health ; Biological poisons ; Public health ; Red tides ; Shellfish ; Dangerous organisms ; Indo Pacific Ocean
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 92-102
    Format: 11
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  • 122
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    Shellfish poisoning in Japanese waters (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26887 | 23782 | 2019-11-05 02:16:53 | 26887 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Under the supervision of the Fisheries Agency, each prefectural government has the responsibility of carrying out monitoring programs. Although some problems exist, monitoring operations have been proceeding successfully. Investigations concerning various aspects of shellfish poisoning are being conducted by 6 national institutions, 15 universities, and about 30 fisheries laboratories. Because shellfish poisoning is a kind of natural phenomenon, the only defense is the establishment of precise monitoring techniques to reduce damages. Efforts to improve monitoring, however, need to be carried out through fundamental research.
    Keywords: Fisheries ; Health ; Monitoring ; Public health ; Red tides ; Shellfish ; Dangerous organisms ; Japan
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 105-109
    Format: 5
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  • 123
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    A summary of paralytic shellfish poisoning in Canada (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26888 | 23782 | 2019-11-05 02:16:11 | 26888 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Paralytic shellfish poisoning occurs along both the east and west coasts of Canada. Since 1973 there have been more than 300 documented cases of paralytic shellfish poisoning, resulting in about 35 deaths. Causative dinoflagellates include Gonyaulax catenella, G. acatenella and G. excavata. Details are given of shellfish contamination, toxic blooms patterns, toxicity monitoring, impact on shellfish industry and detoxification.
    Keywords: Fisheries ; Health ; Historical account ; Public health ; Red tides ; Shellfish ; Dangerous organisms ; Canada ; Gonyaulax
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 110-113
    Format: 4
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  • 124
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    Status of shellfish toxicity in Singapore (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26883 | 23782 | 2019-11-05 02:28:34 | 26883 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: No incidence of shellfish toxicity related to red tides has been recorded in Singapore to date. Only one species of dinoflagellate, Cochlodinium catenatum, has been found dominant in some of the phytoplankton blooms reported. Monitoring is regularly carried out in the waters along Johore Strait for paralytic shellfish poisoning on a fortnightly basis.
    Keywords: Fisheries ; Health ; Shellfish ; Quality assurance ; Red tides ; Singapore
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 86
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  • 125
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    Analysis of activity concentrations due to natural radionuclides in the fish of Kainji Lake (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24242 | 19325 | 2018-05-20 05:37:02 | 24242 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A study was conducted for natural radioactivity of some fish samples from Kainji Lake, situated between latitudes 9~' 50' - 10~' 57' North and longitudes 4~'25'-4~'45' East, New Bussa, Niger state, Nigeria, using gamma spectroscopy method with Nal(TI) detector. Radioactivity a phenomenon that leads to production of radiations, and radiation is known to trigger or induce cancer. The fish are analyzed to estimate the radioactivity (activity) concentrations due to natural radionuclides (Radium 222(226Ra), Thorium 232(232Th) and Potassium 40 (40K). The obtained result shows that the activity concentration for (226Ra), in all the fish samples collected ranges from 16.06 ~c 0.44 Bqkg-1 to 67.39 ~c 12.34 Bqkg-1 with an average value of 37.22 ~c 4.31 Bqkg-1. That of 232Th, ranges from 42.66 ~c 0.81 Bqkg-1 to 200.6 ~c 10.66 Bqkg-1 and the average value stands at 94.82 ~c 3.82 Bqkg-1. The activity concentration for 40K, ranges between 243.3 ~c 1.56 Bqkg-1 to 384.98 ~c 11.97 Bqkg-1 and the average is 618.2 ~c 26.81 Bqkg-1. This indicated that average daily intake due to natural activity from the fish is valued at 0.999 Bq/day, 2.545Bq/day and 10.31 Bq/day for 226Ra, 232Th and 40K respectively. This shows a promising result, since the activity concentration values for most of the fish are within the acceptable limits. However location Upstream02 (9~'51'.285~AN, 4~'35'.533~AE) and Upstream07 (9~'51'.285~AN, 4~'35'.533~AE) fish, became outliers with significant values of 1 13.10~kSvy-1 and 121.68~kSvy-1 effective dose. This could be attributed to variation in geological formations in the lake as well as the feeding habits of these fish. The work shows that consumers of fish from Kainji Lake have no risk of radioactivity ingestion, even though no amount of radiation is assumed to be totally safe.
    Description: Includes: 16 references.
    Keywords: Environment ; Fisheries ; Nigeria ; Kainji L. ; Radioactivity ; Dose ; Radionuclides ; freshwater environment ; Radioisotopes ; Freshwater fish ; Radiation hazards ; Radioactive contamination ; Geological hazards ; Lake fisheries ; Feeding behaviour ; Health and safety ; Toxicants ; Radioactivity ; Bioaccumulation
    Repository Name: AquaDocs
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    Acute toxicity of 2, 3-dichlorovinyl dimethyl phosphate (Sniper 1000EC) and response of Clarias gariepinus Burchell under laboratory conditions (2021)
    Lagos (Nigeria) | FISON
    In:  http://aquaticcommons.org/id/eprint/24215 | 19325 | 2018-05-19 06:53:11 | 24215 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study investigated the acute toxicity of 2, 3-dicholrovinyl dimethyl phosphate (Sniper 1000EC) on the African mud catfish, Clarias gariepinus juveniles (mean weight 19.47 ~c 1.05g) using static bioassay method. Sniper 1000EC is an organophosphate pesticide. Each treatment in the acute test was in triplicate with bioassay media concentration of 0,5, 10, 15 and 20 mg/l. Data on mortalities of fish, water physic-chemical parameters as well as changes in haematological indices were subjected to one way analysis of variance (ANOVA) at 5% probability level. Duncan multiple range test was used to separate differences between the means. The 96hr LC50 estimated by probit analysis during the exposure was found to be 8.20mg/l. Behavioural abnormalities of the exposed fish included erratic and uncoordinated swimming and bleached skin with lesion at the highest concentration (20mg/l). Blood dyscrasias attributable to the toxicant was observed with a significant (p〈0.05) decrease in haemoglobin, haematocrit, red blood cells, white blood cells, lymphocytes and monocytes. Mean corpuscular volume (MCV), Mean corpuscular haemoglobin (MCH), neutrophils, eosinophil and basophil increased significantly (p〈0.05) with increasing concentrations of the toxicant. These abnormalities in body and blood parameters as a result of exposure to the toxicant make the study to recommend that the use of Sniper 1000EC by local fishermen be banned to preserve aquatic lives in Nigerian inland water bodies.
    Description: Includes: 22 references.
    Keywords: Fisheries ; Pollution ; Clarias gariepinus ; Nigeria ; Niger State ; Sniper 1000EC ; Clarias gariepinus ; Toxicity ; Haematological indeces ; freshwater environment ; Toxicity ; Phosphate deposits ; Response analysis ; Freshwater fish ; Juveniles ; Bioassays ; Toxicity tests ; Physicochemical properties ; Controlled conditions ; Haematology ; Pollution monitoring
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    The effects of heavy metals concentration in some commercial fish in Ogun River, Opeji, Ogun State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24219 | 19325 | 2018-05-19 07:00:18 | 24219 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A study was conducted on commercially important fish species of heavy metals in water bodies, The primary objectives were to find out the amount of heavy metals concentration in the fish species, sediments and water samples at the deep and shallow part of the river, to determine the toxicity and relationship between the collected samples and the rate at which it pollutes the water. Atomic Absorption Spectrophotometer (AAS) evaluate their wholesomeness for human consumption. Four heavy metals (Lead, Cadmium, Copper and Zinc) were analysed and only Copper and Zinc were found to be present in the digested samples. The concentration of Copper in the fish (flesh) is 0.09mg/l and that of Zinc is 0.25mg/l. In the bone samples, Copper was found to have 0.17mg/l and Zinc to be 0.22mg/l. In the water samples analyzed, the concentration of Copper is 0.035mg/1 while that of Zinc is 0.047mg/l. In the sediment sample, the amount of Copper is 310.0mg/kg while that of Zinc is 20.50.0mg/kg. This however signifies that the fish species in the Ogun River as well as the water is suitable for consumption which was found to be less than the World Health Organization (WHO's) maximum recommended acceptable limits in the food.
    Description: Includes: 7 references.
    Keywords: Pollution ; Fisheries ; Nigeria ; Ogun R. ; freshwater environment ; Heavy metals ; Pollution effects ; Freshwater fish ; Fisheries ; Toxicity ; Pollutants ; Quality assurance ; Commercial species ; Sediment pollution ; Water analysis ; Lead ; Cadmium ; Copper ; Zinc ; Freshwater pollution ; Health and safety
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    Indicative fish catch of Brass River area (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24230 | 19325 | 2018-05-19 07:21:55 | 24230 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A 14-day quick appraisal fisheries survey of the Brass River area was conducted from 8th-21st June 2005 to collect information on fish species, fish catch and fishing craft. Total fish catch was estimated to be 11,086.12kg. Out of a total of 15 families and 43 species caught in the area, the Sciaenidae (Pseudotolithus typus, P.elongatus, P.senegalenensis) contributed 37%, the Polynemidae (Polydactylus quadrifilis) 26%, and Bagridae (Chrysichtyes nigrodigitatus) accounted for 17% of the total fish landings. The landings at the Coastal Marine Waters were about 66 % while the catch from gill nets constituted 68% of the total fish landings, followed by traps with 15%, hooks and lines landed 11 % while seine nets and cast nets contributed 5% and 1 % respectively to total fish landings. Four types of crafts were used in the Brass River Fisheries including the Ghana boat, plank boat (with or without engine), fiberglass speed boat and the dug-out canoe. In view of high industrial and commercial activities and especially threats from oil and gas pollution, it is recommended that the fisheries of the Brass area be properly investigated.
    Description: Includes: 5 references.
    Keywords: Fisheries ; Pseudotolithus typus ; Pseudotolithus elongatus ; Pseudotolithus senegalensis ; Polydactylus quadrifilis ; Chrysichtyes nigrodigitatus ; Nigeria ; Brass River ; Brass river ; Fisheries survey ; Fish catch ; Fishing crafts ; Fishing gear ; brackishwater environment ; Fishery surveys ; Evaluation ; Fish catch statistics ; Fishing vessels ; Fishing gear ; Landing statistics ; River fisheries
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    Design and construction of microcontroller-based automatic fish feeding device (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24068 | 19325 | 2018-05-10 10:17:48 | 24068 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This paper presents the design, construction and demonstration of an automatic fish feeder. It is a microcontroller-based system. This system is designed to dispense a predetermined amount of fish feed into an aquarium at a particular time each day. The device consists of a cylindrical can, distributing tubes and a stand. The dispensing of food is controlled by the use of a stepper motor, which is situated under the canister. A timer controlled switch is used to control the time at which the motor rotates, by a program burned into the microcontroller. The fish feeder was successfully fabricated and tested. It dispenses food automatically at set preset times. It is expected that this device will enhance the fish farming efforts of the local farmers, especially the armature farmers who combine fish farming with other businesses.
    Description: Includes: 4 figs.;Also includes: 9 refs.
    Keywords: Aquaculture ; Engineering ; Nigeria ; freshwater environment ; Aquaria ; Fish culture ; Feeding equipment ; Design
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    Microbial load on the African catfish (Clarias gariepinus) sold in Markurdi metropolis: a case study of selected markets (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24069 | 19325 | 2018-05-10 10:21:32 | 24069 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The work was carried out using 48 samples of smoke-dried African catfish (Clarias gariepinus). Twelve samples each were obtained from high level market, Wadata market, Wurukum Market and North bank market respectively. Different media (SDA, MSA, EMBA, N.A, MCA), gram reaction and biochemical tests were carried out to confirm the presence of the pathogenic bacteria. There was a strong correlation between the bacterial count and water activity of the fish for all bacterial isolates. The micro-organisms isolated were Aspergilus niger, Mucor spp, Salmonella spp, Escherichia coli and Staphylococcus aureus which were indications of contamination from surrounding environment.
    Description: Includes: 5 tables and 4 figs.;Also includes: 16 refs.
    Keywords: Fisheries ; Health ; Clarias gariepinus ; Nigeria ; African catfish ; Bacterial load ; Makurdi ; Mycoflora ; Smoke-dried fish ; freshwater environment ; Microorganisms ; Cured products ; Fish ; Pathogens ; Biochemical analysis ; Processing fishery products ; Storage life
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    Fish: the healthy friendly species (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24070 | 19325 | 2018-05-12 13:51:23 | 24070 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fish is a very important part of a healthy diet. Fish and other seafood are the major sources of healthful long-chain omega-3 fats and they are also rich in other nutrients such as vitamin D and selenium, protein, and low in saturated fat. There is strong evidence that eating fish or taking fish oil is good for the heart and blood vessels. Research over the past few decades has confirmed the importance of the nutritional components of fish in brain development and reproduction and highlighted a role for fish in a variety of other functions in the body. Much of the importance of fish in health has come from research into long chain polyunsaturated fatty acids (PUFA) of the n-3 family. The n-3 Fats are also generally known as omega 3 fats. Fish is a rich source of two important n-3 PUFAs, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DBA). Marine algae are the only form of life that can easily make long chain n-3 PUFA. As fish feed on algae, they become rich sources of these important n-3 fats which in turn transfer to humans through consumption of the former. In addition, fish is also a good source of iodine, zinc vitamins A and some B vitamins. Fish intake has bee on decline for many years based on different food consumption survey with alarming findings that some people never eating fish without any taboo attached. The level of fish intake has been linked with a lower risk of death from heart disease and likewise playing vital roles in preventing other illnesses such as arthritis, strokes, breast cancer, diabetes to mention a few. However, it is recommended by various finding that eating fish at least twice a week and including oil- rich fish at least once a week in diet will maintain healthy conditions against illnesses.
    Description: Includes: 3 tables;Also includes: 50 refs.
    Keywords: Fisheries ; Nigria ; Fish ; Healthy ; Friendly ; Species ; freshwater environment ; Fish ; Fish oils ; Heart ; Nutrition ; Nutritive value ; Vitamins ; Fatty acids ; Heavy metals ; Pollutants
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    The concept of Adopted Villages and Agricultural Research Outreach Centres -implications for fisheries development in Nigeria: a review (2021)
    FISON | Minna (NIgeria)
    In:  http://aquaticcommons.org/id/eprint/24073 | 19325 | 2018-05-12 13:58:14 | 24073 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Adopted village/Agricultural Research Outreach Centres (AROC) initiative is specifically conceived by the Federal Government of Nigeria in order to avoid the weaknesses and shortcomings of the conventional method of technology transfer to the farmers through the extension staff of the Agricultural Development Projects. This paper examined the relevance of the concept in the development of the fisheries sector. Methods and guidelines adapted so far and modalities for actualization of targeted aims and objectives were also examined. The economic importance of fish to the economy of Nigeria was highlighted. Recommendations were given as way forward for the success of the project and its continuity.
    Description: Includes: 16 refs.
    Keywords: Fisheries ; Aquaculture ; Nigeria ; freshwater environment ; Agriculture ; Research programmes ; Technology transfer ; Development projects ; Extension activities ; Fisheries ; Fishery economics
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    Assessment of smoked fish packaging in Doron-Baga metropolis, Borno State, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24074 | 19325 | 2018-05-12 13:59:45 | 24074 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study examined how smoked fish are being packaged in Doran-Baga metropolis. A random sampling technique was used purposely to select one hundred and fifty respondents who are currently involve in smoked fish packaging. Data were collected by means of structured questionnaire. Data collected were analyzed using percentages and frequency. Results revealed that smoked fish packaging is predominantly traditional in the study area. Modern method of smoked fish packaging is nearly absent when compared to smoked fisheries resources produced and packaged from the area
    Description: Includes: 3 tables;Also includes: 8 refs.
    Keywords: Fisheries ; Management ; Nigeria ; Borno ; Chad L. ; freshwater environment ; Cured products ; Packing fishery products ; Evaluation ; Processing fishery products ; Packing materials
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    Design and construction of a simple boat trailer for Federal College of Freshwater Fisheries Technology, New Bussa (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24080 | 19325 | 2018-05-12 14:12:55 | 24080 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A simple boat trailer with an overall length of 4.59m, breathes 1.68m, and weight of 87kg was designed and constructed using locally available metals and scrap materials. The boat trailer was used to tow a boat of 250kg weight through a distance of 14km without affecting the safety and speed of the car. The construction resulted to the production of an open cart that is light and easily maneuvered that one person can move it manually without difficulty. The total production cost was N32, 300 which is affordable in relation to the cost of transporting boats through the use of pick up vans. The boat trailer can be easily maneuvered when coupled to any car or van. This makes it adequate for towing and for safer movement of boats from the school boat yard to any water bodies.
    Description: Includes: 2 tables, 2 figures and 3 plates;Also includes: 5 refs.
    Keywords: Fisheries ; Nigeria ; Boat ; Towing ; Construction ; freshwater environment ; Boats ; Construction ; Construction materials ; Metals ; Towing tanks ; Safety devices
    Repository Name: AquaDocs
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    Design and construction of 4.27M (LOA) rowing transport boat (punt) for inland water bodies (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24079 | 19325 | 2018-05-16 14:02:23 | 24079 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Flat bottom boat (Rowing Punt) 4.27M length overall (LOA) was designed and constructed using plywood and fiber glass materials. The boat posses features like easy construction stability and high capacity to carry load. Other features include least cost light weight, shallow draft of 9cm easy maneuverability. The light displacement (weight empty) is 96.6kg which is similar to local boat of same size. The capacity of the boat 544kg (8 person) and total cost of production was N41,150.00 which is not beyond the reach of an average fisherman. The Rowing Punt easily propelled by oaring which makes it adequate for fishing activities on shallow water bodies. Such easily maneuvered craft can also be used for recreation which include, sport fishing, and boating.
    Description: Includes: 3 tables, 2 figs., and 2 plates;Also includes: 6 refs.
    Keywords: Fisheries ; Nigeria ; freshwater environment ; Fishing vessels ; Sport fishing ; Transportation ; Marine transportation ; Fishermen ; Construction ; Construction materials ; Fibre glass ; Stability
    Repository Name: AquaDocs
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    Development of an improved dug canoe for artisanal fisheries (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24081 | 19325 | 2018-05-12 14:14:25 | 24081 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A dug canoe similar to the one commonly used by artisanal fisherfolks 4.82M (LOA) was designed and constructed using locally available materials, as an alternative to hardwood that is becoming very scarce. The canoe have least cost, easy construction, adequate stability, light weight and easy maneuverability, as its attributes. The light displacement (weight empty) was 37kg which is light enough in relation to craft of same size commonly used by fishermen. The capacity of the canoe was 210 kg (3 persons) and total production cost of N18,400 which is not beyond the reach of an average fisherfolk. The craft is small and fall among the category of crafts that account for the greater percentage of national fish landing. The canoe also closely resembles the local fishing crafts, hence easy acceptance by local fisherfolk.
    Description: Includes: 3 tables, 2 figures and 2 plates;Also includes: 8 refs.
    Keywords: Fisheries ; Nigeria ; Canoe ; Plywood ; Hardwood ; alternative ; freshwater environment ; Artisanal fishing ; Canoe fisheries ; Canoes ; Construction ; Construction materials ; Marine transportation ; Design
    Repository Name: AquaDocs
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    Evaluation of fish biodiversity integrity of Ebonyi River (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24083 | 19325 | 2018-05-12 14:17:44 | 24083 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A study of the fish biodiversity integrity of Ebonyi River was conducted from September 2006 to February 2008 to generate fundamental data needed in Fisheries policy formulations and to assess the potential of the Fishery in enhancing quality food protein production. A total number of 1,080 fishes (comprising Fin-fish and shell-fish) were caught with hooks and lines of size 13, cast nets, gill nets and traps of mesh sizes of 50mm, 75mm and 100mm and identified using taxonomic keys. There were 39 species belonging to 20 genera and 14 families. Percentage gear catch composition was 43.6%,23.8%,17.7% and 15.3%for cast nets, gillnets, hooks and traps respectively. Zooplankton samples were also collected identified and analyzed using standard plankton analysis protocol. Cladocerans, rotifers, copepods and protozoans were represented in the identified species. Analysis of Variance (ANOVA) was used to determine the overall significance of the monthly means of all parameters and in locations and also to establish their correlation characteristics. Fisher's Least Significant Difference (F-LSD) was used to separate the means and to rank them. Family Amphilidae and Malapteruridae were not significant (p~B0.05) in monthly occurrence. Family Bagridae, Cichlidae and Clariidae showed highly significant (p〈0. 01) monthly differences while the remaining fish families exhibited significant (p〈0.05) differences in months. It was observed that artisanal fisherfolks used fishing gears whose mesh sizes deplete juvenile fish. It was concluded that there is an urgent need for improved management strategies to enhance sustainable productivity of the inland river system.
    Description: Includes: 3 tables;Also includes: 12 refs.
    Keywords: Fisheries ; Ecology ; Nigeria ; Ebonyi R. ; freshwater environment ; Fish ; Biodiversity ; Fishery policy ; Aquatic environment ; Inland fisheries ; Zooplankton ; Fishing gear ; Evaluation ; Fishermen ; Juveniles ; Depletion ; Ecology ; Stock assessment
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    Fishing gear survey of Tatabu floodplain (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24084 | 19325 | 2018-05-12 14:19:12 | 24084 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study was carried out for a period of three months from June to August, 2008. Five fishing villages namely Tatabu, Tsafa, Tunga Fulani, Tunga Sarkin ruwa and Lafiagi were used as study area by administering a total of 50 questionnaires (I.R. 10 questionnaires in each village). The study was conducted to assess the type of fishing gear mostly used by the fishermen in Tatabu floodplain. The greatest proportion (98%) of the fishermen interviewed were within age bracket 25-35 years. Majority of the respondents were Muslims and married form the highest percentage (60%). Three types of fishing gears, gillnet, long line and Malian Trap were used. The fishermen using gillnets had the highest percentage (44.2%) and those using Malian traps were the lowest percentage (23%). the fishermen using mesh size 50.8mm were highest (38.7%) and those are using mesh size of 101.6mmformed the lowest percentage (6.5%). The fishery crafts, 38% of fishermen use 4.3 meters length overall (LOA) and fishermen using 5.5 meters formed the lowest percentage (6%). Most of the respondents (88%) realized about N100-900 as daily income while 12% obtained more than N900 as daily income (54%) of the respondent. The problems militating against successful fishing activities includes lack of provision of social amenities, provision of loan and procurement of fishing inputs at subsidized rate.
    Description: Includes: 9 tables;Also includes: 9 refs.
    Keywords: Fisheries ; Nigeria ; Tatabu Floodplains ; freshwater environment ; Fishing gear ; Surveys ; Flood plains ; Artisanal fishing ; Fishermen ; Seasonal variations
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    Proximate composition and sensory analysis of African catfish (Clarias gariepinus) harvested from different sources in Ondo State, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24088 | 19325 | 2018-05-12 14:29:17 | 24088 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Proximate composition and sensory evaluation of Africa catfish Clarias gariepinus harvested from earthen ponds, reservoir system, tank flow - through system and Flow Rivers were determined. Chemical assessment was based on the method of analysis of the Association of Official Analysis (AOAC). The samples collected shows moisture content 71.71~c1.65%, 74.20~c1.39, 73.60~c2.3% and 72.29~c68% from earthen ponds, reservoirs, and tank flow- through system and rivers respectively. The crude protein 9.77~c2.66%, 20.99~c0.68, 19.80~c0.53% and 18.84~c1.00% from earthen ponds, reservoir system, tank flow- through system and rivers respectively. There was no significant difference (p〉0.05) among the means recorded and the locations where the fish samples were collected has no effect on the value of the moisture and the crude protein content of the fish samples when compared. Crude fat contents 5. 68~c0. 81 %, 4.95~c0.38%, 3.85~c0.56% and 1.35~c0. 29%from reservoir system, low through system, earthen ponds, and rivers respectively. Ash content of the fish samples were 1.52~c0.40%, 1.49~c0.40%, 2.23~c0.91 % and 1.47~c0. 60% from earthen ponds, reservoir system, tank flow- through system and rivers respectively. There was a significant difference (p 〈0.05) among the means of the crude fat contents and ash contents. The location where the fish samples were collected influenced the means of the ash content and the crude fat contents. The taste, odour, appearance and texture were the indices for the evaluation. Fish from rivers were most preferred followed by earthen ponds, reservoirs system and tank flow- through system respectively.
    Description: Includes: 4 tables and 1 figure;Also includes: 15 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; Ondo State ; Reservoir ; Tank flow-through ; River ; Earthen pond ; freshwater environment ; Aquaculture ; Chemical composition ; Fish ; Sense organs ; Evaluation ; Water content ; Lipids
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    The length-weight relationships of two Siluriformes in Owalla and Eko-Ende Reservoir of Osun State, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24087 | 19325 | 2018-05-12 14:24:52 | 24087 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The length - weight relationships of two siluri formes Chrysichthys nigrodigitatus and Schilbe intermedius -from Owalla and Eko - Ende reservoirs were studied to provide useful information for the sustainable development of their fisheries. Length - weight data were analyzed, and LWR graphs were plotted using the sigma plot software. The b values in the LWR W = aLb varied between 3.01 and 3.58, revealing that the somatic growth of C. nigrodigitatus from Eko - Ende and that of Schilbe intermedius from both reservoirs had positive allometry, while C. nigrodigitatus from Owalla reservoir had an isometric growth. The maintenance of the ecological balance in the reservoirs will guarantee sustainable fisheries for these siluriformes.
    Description: Includes: 1 table and 2 figures;Also includes: 13 refs.
    Keywords: Ecology ; Fisheries ; Chrysichthys nigrodigitatus ; Schilbe intermedius ; Nigeria ; Owalla reservoir ; Nigeria ; Eko-Ende reservoir ; freshwater environment ; Length-weight relationships ; Fish ; Reservoir fisheries ; Sustainable development ; Mutations
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    Gonadosomatic index, fecundity and egg size of (Synodontis) S. eupterus (Boulenger) in River Rima, north western Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24089 | 19325 | 2018-05-12 14:34:56 | 24089 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study was conducted to provide information on gonadosomatic index, fecundity and egg size on S. eupterus from River Rima, North-Western Nigeria, from November 2005 and December 2008. 1,610 samples, comprising of 781 females, 816 males and 13 samples whose sexes could not be identified were examined, giving a female: male ratio of almost 1:1. Gonadosomatic index (GSI), fecundity (F) and diameter of the oocytes (ES) were analysed. Linear regression analysis was used to determine the relationship between GSI, fecundity and egg size with total length (TL), total weight (TW), gonad weight (GW) and gonad maturation stages (MS). Six stages of gonad maturation were established. Mean GSI for female and males were 7.30 0~c6.16SD and 1.05~c1.23SD, respectively. It varied (P〈 0.05) with sex, size class and gonad maturation stage, and exhibited significant (P〈0.05) correlation with fish TL, TW and MS in females but not (P〉0.05) in males. Mean fecundity was 2834.45~c2530.87SD and it correlated most significantly (P〈0.05) with GW; and inversely with MS. Mean egg size was 1.31~c0.33mm. It has non significant (P〉0.05) relationship with TL, TW and MS but significant one (P〈0.05) with GW. Egg size distribution was bimodal, with different sizes of egg in ovaries indicating multiple spawning. This study provided baseline information on some aspects of reproduction which is important in the management of A. occidentalis in River Rima.
    Description: Includes: 4 tables and 2 figures;Also includes: 25 refs.
    Keywords: Ecology ; Fisheries ; S. eupterus ; A. occidentalis ; Nigeria ; Rima R. ; Gonadosomatic index ; fecundity ; oocyte diameter ; gonad maturation stage ; S.eupterus ; freshwater environment ; Gonadosomatic index ; Fecundity ; Fish eggs ; Size ; Reproduction ; Fish ; Spawning ; Frequency ; Oocytes
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    Microbial occurrence on differently preserved tilapia fish in Abeokuta North Local Government, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24094 | 19325 | 2018-05-16 13:01:01 | 24094 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study reports the microbial flora of differently processed tilapia fish obtained from Olomoore market, Abeokuta, Nigeria. Samples were purchased, differently processed (using smoking, salting, freezing) and analyzed for the presence of bacteria. Microbial loads and characterisation were examined on the gills and the skin using standard microbiological procedures. The progression of growth was also monitored within I0-day storage period for the differently processed fish. 〈i〉Proteus vulgaris, Leuconostoc meseritiroides, Klebsiella planticola〈/i〉, Pseudomonas spp, 〈i〉Staphylococcus aureus, Bacillus subtitles〈/i〉, Enterobacter spp, 〈i〉Proteus vulgaris〈/i〉, Lactobacillus spp. were the bacteria isolated from the differently processed fish. There was no significant difference (P~B 0. 05) in the bacteria load of the gill during the first day of processing. However, significant variation (P~B 0. 05) existed in the bacteria load of the skin of the fish during the first day of processing. Although no significant difference (P~B 0. 05) was recorded in the bacteria load of the gill and the skin of the fish during the first day of processing in nutrient agar medium. In the tenth day frozen fish gill had the highest bacteria load while smoked fish gill had the lowest bacteria load there was significant difference (P~B 0. 05) in the bacteria load on the gill of differently processed fish gill. Similarly, there was significant variation (P~0.05) in the bacteria load of the skin of the fish during the tenth day processing.
    Description: Includes: 3 tables;Also includes: 29 refs.
    Keywords: Fisheries ; Proteus vulgaris ; Leuconostoc meseritiroides ; Klebsiella planticola ; Staphylocoooccus aureus ; Bacillus subtilis ; Nigeria ; Bacteria ; Microbial ; Occurrence ; Tilapia ; Smoking ; Salting ; Boiling ; freshwater environment ; Microorganisms ; Fishery products ; Processing fishery products ; Fish ; Gills ; Fish diseases ; Skin ; Bacterial diseases ; Pathogens
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    Potentials of Prosopis africana for fish smoking in Lake Chad Basin: a review (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24098 | 19325 | 2018-05-16 13:09:44 | 24098 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This paper examines the importance of Prosopis Africana as the most abundant tree in Baga and environs. Despite its abundance fish processors prefer the other trees that are almost becoming scarce especially Acacia Nolitica for fish smoking. There is need for awareness to adapt the use of Prosopis Africana for environmental sustainability and preservation of other trees not to go into extinction.
    Description: Includes: 2 plates;Also incudes: 12 refs.
    Keywords: Fisheries ; Law ; Nigeria ; Chad L. ; Smoking kiln ; freshwater environment ; Curing ; Fish ; Processing fishery products ; Deforestation ; Environmental degradation ; Wood ; Sustainability ; Sustainable development
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    Global warming: implications on freshwater fish, a review (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24099 | 19325 | 2018-05-16 13:12:57 | 24099 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Global warning and climate change are growing environmental concerns which are much in the scientific, governmental and public eye are present. The potential impact on freshwater fish is immense because most fish have no physiological ability to regulate their body temperature.
    Description: Includes: 21 refs
    Keywords: Environment ; Fisheries ; Pollution ; Nigeria ; Global warming ; Climate change ; Freshwater fish ; freshwater environment ; Freshwater fish ; Spawning ; Biological stress ; Environmental impact ; Environmental assessment ; Body temperature ; Legislation ; Global warming ; Climatic changes
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    Some ecological factors of the tropical floodplain influencing the breeding and conservation of Gymnarchus niloticus (Cuvier 1829): a review (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24096 | 19325 | 2018-05-16 14:04:57 | 24096 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Gymnarchus niloticus is the only species of the family Gymnarchidae. It is a popular food fish in most parts of Africa where it is greatly esteemed. In some culture, it is offered as a special gift to leaders during festive seasons, while in some others it is an important part of items presented by a suitor to the parents of a girl at the time of betrothal. It can therefore be inferred that G. niloticus is not only important as food fish with economic significance, but also plays vital roles in the socio-cultural life of some African tribes. The supply of this important species still depends largely on the catch from the wild. However, based on the method of catch, it has been classified as endangered. A close examination of the ecological factors in the floodplain (where it migrates to breed), revealed strong influence on the breeding and survival of the fish. The level of rainfall determines the extent of floodplain inundation, and the abundance and survival of the flora and fauna in the area. These in turn determine the availability of breeding substrates and natural food sources for the various stages of G. niloticus. Therefore, rainfall, the flora and the fauna of the floodplain play vital roles in the breeding and survival of G. niloticus in nature. To ensure the conservation of this important species, controlled propagation strategies that draws on the influence of prevailing ecological factors in the floodplain is recommended. This will ensure conservation, and protect the economic and socio-cultural significance of G. niloticus.
    Description: Includes: 4 figures;Also includes: 36 refs.
    Keywords: Aquaculture ; Ecology ; Fisheries ; Gymnarchus niloticus ; Nigeria ; Ecological factor ; Tropical floodplains ; Breeding ; Conservation ; Gymnarchus ; Tropical floodplains ; freshwater environment ; Flood plains ; Ecology ; Breeding ; Conservation ; Fish ; Food fish ; Commercial species ; Rare species ; Catch/effort ; Ecological distribution
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    Socio-economic status of the fisher folk of Yuna Adopted Village in Borgu local government area, Niger State (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24106 | 19325 | 2018-05-16 13:52:14 | 24106 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Overcoming Poverty in Nigeria is one of the fundamental challenges facing the country today. The study was conducted to assess the socio-economic status of fisher folks in Yuna Adopted Village Borgu Local Government Area of Niger State. One hundred respondents (65 male and 35 female) were purposively selected from four registered groups in the Village. Frequencies and Percentages were used to arrange, summarize and present the findings of this study. Majority of the male respondents fell within the range of 30-49 years, while female respondents range from 40-49 and 60-69 years. The distribution of respondents based on educational attainment shows that 92.3% male and 100% female had Quranic education. Majority of the respondents (both male and female) lives in mud with thatched roof houses and do not own radio and television. Similarly the highest proportion of male respondents generated mostly income of N111,000 and N6,000 - N10,000, while female respondents earned between Nll,000 - N30,000 and N6,000-N10,000 only. The technologies awareness by respondents include fish farming, V-bottom boat, Solar tent dryer and trammel net, only fish farming was adopted by respondents. The major constraints to Agricultural production were identified and suggestions was made on how to overcome the constraints.
    Description: Includes: 6 tables;Also includes: 12 refs.
    Keywords: Fisheries ; Sociology ; Nigeria ; Awareness creation ; Technologies adoption ; Poverty ; Fishers ; Adopted Technologies ; freshwater environment ; Artisanal fishing ; Socioeconomic aspects ; Food security ; Sustainable development ; Inland fisheries ; Fishing villages ; Technology transfer
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  • 147
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    Stock assessment of shrimps and prawn species of the Lower Benue and Niger River, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24107 | 19325 | 2018-05-16 13:53:57 | 24107 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The shrimps were collected from three sampling sites: on the River Benue at Makurdi, Benue state, on the River Niger at Jebba and Lokoja and Idah at Kogi state from January to April, 2011. Macrobrachium felicinum and Atya gabonensis were sampled during this period, with Atya gabonensis occurring more abundantly. Condition factors of freshwater shrimps Atya gabonensis from the two water bodies in Nigeria range from 1.875for species in Jebba in March to 3.330 for Lokoja in March. The parameter ”b” of the length - weight relationship of the fresh water shrimps are less than three (rangingfrom 1.0233 for species from Lokoja in April to 2.7717 for species from Makurdi in Feburary). These values suggest negative allometric growth. The length frequency of freshwater shrimps sampled shows that peak populations of length groups occurred in April for species from Jebba and Makurdi while peaks occurred in January for species from Lokoja.Peak frequencies were observed in length of 4.0 - 5. 4cm and 8.5 - 9.9cm in January as well as 5.5 -6.9cm for species from Lokoja and in the group of 5.5 - 6.9cm in April for species from Makurdi and 7.0-8.4cm in April for both Makurdi and Jebba.
    Description: Includes: 2 tables;Also includes: 16 refs.
    Keywords: Fisheries ; Atya gabonensis ; Macrobrachim felicinum ; Nigeria ; Maiduguri ; Nigeria ; Niger ; Jebba L. ; freshwater environment ; Stock assessment ; Allometry ; Growth ; Depleted stocks ; Catch/effort ; Condition factor ; Length-weight relationships ; Shrimp fisheries
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    Spatial mapping of shellfish marketing in Kure Ultra modern market, Minna, Niger State, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24105 | 19325 | 2018-05-16 13:50:13 | 24105 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Geographic Information system and Remote Sensing in the field of marketing is used in this study to open up a wide range of its possible applications as the study assessed shellfish marketing in Kure Ultra Modern Market Minna Niger State. The aim was to develop a database of various shellfish product on sale at the market. The demographic profile, socio-economic characteristics of the marketers and problem associated with the marketing, 100 questionnaires were administered the analytical tool used were frequency distribution, tables, percentages and cost-benefit ratio. Returns from the interview and questionnaire were use to verify the result which depicts that both male and female were engage in the business with female forming the majority group (55%) and 45% men. Marketing of the shellfish was profitable which was attributed to realization of the significant of shellfish over meat. The high profit was recorded in raining seasoning (70%) while dry season sales were 30%. Species of shellfish marketed were crayfish, prawn, cockles, snail, shrimps and crabs. The study also shows that the shellfishes mostly sold are in fresh form (85%) while 15% are in dry form. Daily sales ranges from N1000-N5000, majority of the respondents (75%) patronize low-cost transportation means between N500-N1000. In every enterprise there must be a problem; most of the problem encountered by the respondents were lack of constant supply from the landing site which is mostly marine environment, inadequate storage facility, poor transportation, high tax charges and theft; all this attribute data and the co-ordinate of the selling point at the market were put into ArcGIS environment. Base on the findings, recommendations were profiled to the government and database kept for references.
    Description: Includes: 4 tables and 4 figures;Also includes: 9 refs.
    Keywords: Fisheries ; Management ; Nigeria ; Geographic information system ; Remote sesing ; Attribute Data ; Database ; marketing ; Distribution channels ; Cost and returns profit ; Spatial mapping ; freshwater environment ; Shellfish ; Mapping ; Marketing ; Fish ; Socioeconomic aspects ; GIS ; Remote sensing ; Distribution
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    Sensory evaluation of fish spring roll produced from tilapia and catfish (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24104 | 19325 | 2018-05-16 13:46:24 | 24104 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Acceptance of fish spring roll produced from Tilapia and Catfish were evaluated in an attempt to explore the possibilities of better utilization of undersized Tilapia and Catfish species. The products were produced with cooked potatoes (20%) egg (0.5%), milk (0.21%), butter(10.47%), flour(41.87%), vegetable oil(16.75%), carrot(0.46%), pepper (0.04%), made up to 100% with 10% inclusion of Tilapia in Tilapia spring roll and Catfish in Catfish spring roll. Tilapia and Catfish were boiled in a boiling pot before deboning for 10 minutes and then mashed for 5 minutes. The vegetables were chopped and steamed in a steaming pot for 5 minutes. 41.87% of flour was mixed together with steamed fishes and vegetable and rolled out into cylindrical shape of one inch thickness, deep fried in 800ml of vegetable oil and then allowed to cool. The acceptance was evaluated with 25 man panel based on taste, flavor, colour and texture. 80% of the panelist preferred spring roll made from Tilapia to those made from Catfish. 90%$ like the texture and flavor of spring roll made from catfish than that of Tilapia. There was higher consumer acceptability for spring roll made from Tilapia. In the flavor and colour of the spring roll, there was no significant difference observed between rolls made from catfish and Tilapia. Commercialization of these products can contribute to diversification in the fish industry through better utilization of undersized Tilapia and Catfish.
    Description: Includes: 1 table and 1 figure;Also includes: 7 refs.
    Keywords: Ecology ; Fisheries ; Nigeria ; Ingredient ; Recipes ; Production ; Preparation ; Qiality and nutrition ; Fish spring Roll ; freshwater environment ; Sensors ; Evaluation ; Fish ; Feeding experiments ; Utilization ; Minced products ; Animal nutrition ; Fishery products
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    Potential impact of climate change on fisheries and aquaculture in Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24584 | 19325 | 2018-05-20 15:57:28 | 24584 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Climate change will have significant impacts on Nigeria's freshwater and marine aquatic systems. and hence on the countries fisheries and aquaculture. Fisheries and aquaculture are highly vulnerable to changes in weather pattern. and the impacts, which could be negative or positive, will vary from the coastal areas to the drier northern parts of the country. Elevated water temperalures will affect fish physiological processes, thereby affecting spawning. survival of the juveniles, recruit into the exploitable phase of population, population size, production and yield. The impacts of increased flooding of the freswater bodies will be negative through erosion of watershed, destruction of fish feeding and breeding habitats, decrease in primary productivity and alteration of the normal resilience of the aquatic systems, or positive in expansion of aquatic habitats for primary and fish productions especially during the dry season. Drought will exacerbate draw down of the lakes and reservoirs, and insufficient flow in the river hasins for spawning and primary pro duction thereby affecting fish production. Rise in the water level of the Atlantic ocean will lead to intrusion of more salty wafer into The river delta areas, and inundation of the coastal low-lying areas, thus affecting distribution of both the freshwater and marine fishes as a result of changes in the physical and chemical properties of the waters. The impacts will ultimately affect fish population, production and supply, thereby affecting the livelihood of over 26 million people engaged in the primary and secondary sectors of the fisheries industry, as well as food security of the country. The adaptation and mitigation strategies will be based on the peculiar characteristics and interactions of fisheries and aquaculture within the framework of feasible policy instruments. Strategies and policy measures need to be evolved to combat the observable and projected impacts of climate change on fisheries and aquaculture, in order to protect the livelihoods of the fishing communities and food security.
    Description: Includes: 13 references.
    Keywords: Atmospheric Sciences ; Aquaculture ; Fisheries ; Nigeria ; Climate change ; Fisheries ; Aquaculture ; Impacts ; Mitigation ; Food security ; freshwater environment ; automation
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    Benefit related relationship among artisanal fisher folks of Tombo fish landing community (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24603 | 19325 | 2018-05-21 12:20:04 | 24603 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Benefit related relationship among the artisanal fisher folks of Tomho, a fishing community in Western Rural District of Sierra Leone was studied. The study was carried out to ascertain the socioeconomic activities of the target group, their level of involvement and reasons for going into transactional sexual activities. Eighty (80) structured questionnaires were administered to randomly selected fishermen and people engaged in fish related activities and this was backed up hy the record of HIV cases especially among women at tht Tombo Community Health Centre. Data collected from the interview were treated using measure of central tendency such mean and percentages and results are presented in tables and charts. Respondents age ranged between 15-65 years; sex (fishermen to fish traders) was 71.3% (female) and 28.75% (males) respectively. Marital status of respondents was single, married, divorced, seperated and widowed. Predominant religion of repondents was Islam and Christianity. The study revealed that transactional sex in the study area is mediated by economic structural and environmental factors. The study also revealed that 70.12% of documented HIV cases at the Tombo Community Health Centre were female, while 29.87% were male between the active age of 15-55 years. Fish traders (68.8%) constituted the highest carriers of HIV in the study area.
    Description: Includes: 9 references.
    Keywords: Fisheries ; Sociology ; Nigeria ; Tombo ; Fishing communitu ; Transactional sex ; Socio-economic ; Community health Centre ; freshwater environment ; automation
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    Impact of water hyacinth (Eichhornia crassipes) on fish catch in the lower Taylor Creek area of Bayelsa State (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24605 | 19325 | 2018-05-21 12:24:48 | 24605 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The aim of the study was to access the impact of water hyacinth, Eichhornia crassipes on fish catch in the lower Taylor Creek area of Bayelsa State. The experimental approach involved the division of the creek into new stations: infested and non-infested at the littoral zone. Subsequently, the deployment of six Malian traps with dimensions of 70cm diameter and 80cm height were set in each station for a period of six months using groudnut cake as bails. Furthermore, fish caught were counted and identified into families and species. From results, fish species composition obtained from the stations were a total of 9 families and 15 species. However, it was observed that the water hyacinth infested area had the lowest fish catch while the non-infestated area had the highest number of fish catch for both dry and wet season. It is therefore concluded that the invasion of Eichhornia crassipes impacted on fish population and composition.
    Description: Includes: 12 references.
    Keywords: Ecology ; Fisheries ; Nigeria ; Eichhornia crassipes ; Fish catch ; Taylor creek ; Bayelsa ; freshwater environment ; automation
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    Assessment of heavy metals in water and fish from Ibrahim Adamu Lake, Jigawa, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24612 | 19325 | 2018-05-22 05:59:44 | 24612 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study was conducted to assess the levels of heavy metals in water and the flesh of tilapia (Oreochromis niloticus). Water and tilapia were sampled for a period of 12 months from October, 2003-september 2004. Water and muscle tissue were analysed for Cu, Cr, pb, and Zn using flame atomic absorption spectrophotometer. The assessment showed Cr (3.35mg/l), Cu (0.75mg/l), pb (0.81mg/l) in water while Cr(2.27mg/kg) and pb (0.27mg/kg) were found to be high in the tissue samples and were above the values recommended by WHO and the Food and Agricultural Organization (FAO)of the United Nations and therefore not safe for human consumption.
    Description: Includes: 17 references.
    Keywords: Fisheries ; Pollution ; Oreochromis niloticus ; Nigeria ; Heavy metals ; Oreochromis niloticus ; Atomic absorption ; Spectrophotometer ; freshwater environment ; automation
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    Survey of physical characteristics of the upper reaches of new Calabar River, Niger Delta, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24618 | 19325 | 2018-05-22 06:12:36 | 24618 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: One of the priority research projects of the Nigerian Institute for Oceanography and Marine Research (NIOMR) is broodstock development and mass propagation of silver catfish, Chrysichthys nigrodigitatus of which the broodstock is naturally abundant in New Gala River. Selected physical characteristics and water physico-chemical parameters of the upper reach of the New Calabar River at Aluu were investigated. The highest depth value of 9.20 m was recorded in the middle of the river. The width of the river measured during spring high tide and low tide were 174 m and 110 m respectively. The cross-sectional area and average flow velocity of the river were 797.13 m2 and 0.374 m/s respectively. The discharge of the river was computed as 298.13m3/s. The river water was acidic most of the period (Hydrogen ion concentration, pH: 5.12 to 7.43), with low total alkalinity values (4.00 to 12.00 mgCaCO3/L) and low total hardness values (11.5 to 51.2 mgCaCO3/L) which indicate that the river water is black and soft. There was significant (p~,0.05) seasonal variation in temperature (23.1 to 31.7~'C\}, Secchi transparency (9.30 to 19.00 cm), total hardness (11.5 to 51.2 mgCaCO3/L), dissolved oxygen (5.20 to 7.50 mg/L) and dissolved oxygen deficit (0.02 to 2.95mg/L). These results are useful for several stake holders who use the river as a sink for trade wastes, as source of water for fish farming, as source of broodstocks of Chrysichthys nigrodigitatus, as raw water for water treatment plants, and as means of transportation of industrial materials.
    Description: Includes: 16 references.
    Keywords: Chemistry ; Fisheries ; Limnology ; Chrysichthys nigrodigitatus ; Nigeria ; New Calabar River ; New calabar River ; Physical characteristics and physico-chemical features ; Seasonal variation ; freshwater environment ; automation
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    Physico-chemical parameters in relation to fish production of Dadin Kowa Dam, Gombe State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24619 | 19325 | 2018-05-22 06:14:16 | 24619 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Eight month physicochemical study of Dadin Kowa Dam was carried out forthnightly from July, 2011 to february 2012. Air temperature ranged from 18.25~'C ~c 28~'C ~c 0.50 to 28~'C ~c 2.16. Water tmperature ranged from 18.75~'C ~c 2.21. Transparency ranged from 11.00cm ~c 1.83 to 29.63 cm ~c ~c 2.14. Conductivity ranged from 13.00~Ks/cm ~c 13.33 to 41.38~Ks/cm ~c 5.54. Hydrogen ion (pH) ranged from 6.69 ~c 1.03 to 8.39 ~c 1.17. Dissolved oxygen ranged from 6.39mg/l ~c 1.03 to 10.14mg/l ~c 1.17. Total alkalinity ranged from o.69mg/l ~c 0.38 1.34mb/l ~c 0.02. Total ammonia ranged from 0.20mg/l ~c 0.027 to 0.83mg/l ~c 0.05. There were various levels of correlation between these parameters. There was no significant difference between both sites and months (p〉0.05) of all the parameters except total nitrogen which show a significant difference between the sites (p〈0.05) and transparency also shows a significance between the months (p〈0.05). All physicochemical parameters were almost within the tolerable limits for supporting aquatic life.
    Description: Includes: 27 references.
    Keywords: Fisheries ; Chemistry ; Nigeria ; Dadin Kowa Dam ; Physico-chemical parameters ; Fish production ; Dadin Kowa Dam ; freshwater environment ; automation
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    Genetic status of tilapia at Badore landing site using RAPD markers (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24620 | 19325 | 2018-05-22 06:15:41 | 24620 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Molecular technique based on Random Amplified Polymorphic DNA (RAPD) analysis was applied to study genetic status among tilapia species from Badore landing site of Lekki lagoon. Individual variations within species population were assessed using PCR-RAP analysis with five Operon primers (OPC04, OPA02, OPB08, OPE02 and OPF03, Operon Technologies Inc, USA) which revealed dif ferent banding patterns of varying primer reproducibility. Graphical representation using UPGMA cluster analysis produced a dendrogram chart with five clusters (~f, ~e, ~p ,~S, and ~W) indicating different degrees of variations and similarities. There were various levels of genetic similarity observed possibly due to hybridization. Nevertheless, few distinct variations among the samples were visible, show ing possible genetic variability. At 0.89 (89%) coefficient, cluster,~f is made up of 7 samples which are genetically similar. At 0.834 (83.1 %) coefficient, distinct sample BTl2 forms a cluster (~p) with cluster ~f which shows they are related at this coefficient. Cluster ~W (84% coefficient) comprising of 7 samples forms another cluster with a distinct sample BT06 at about 0.79 coefficients. At 78.6% coefficient (cluster ~e). All the samples are genetically similar except sample BT17. This distinct sample can increase genetic variability by a cross between it and other strains of tilapia. Therefore, care should be taken by fish farmers who buy or use the fish samples from this landing site for culture. Proper molecular characterization of this fish species before culture becomes necessary to avoid genetic problems.
    Description: Includes: 17 references.
    Keywords: Biology ; Fisheries ; Nigeria ; Genetic ; Tilapia ; RAPD ; Badore ; freshwater environment ; automation
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 214-216
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  • 157
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    Preliminary investigation of fish species abundance of Otammiri River, Owerri, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24626 | 19325 | 2018-05-22 06:25:03 | 24626 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A study of fish species abundance of Otammiri River, Owerri, Nigeria was conducted from April to August, 2012. Four hundred and three (403)fishes belonging to 10 families, 16 genera and 21 species were collected from artisanal fishers using various fishing gears. The fish samples were taken to laboratory, identified, counted and their weights and lengths measured. The unnamed cichlid species ranked highest in percentage number and weight as well as Index of Preponderance (38.7%, 33.6% and 51.1% respectively), while the least were Polycentropis abbreviata, Hepsetus odoe, Synodontis omias, Chrysichthys aluensis and Chrysichthys furcatus each constituting 0.2% of the total number of fish collected. Among fish families, Cichlidae ranked highest in percentage number (82.63%) and weight (81.2%), followed by Hepsetidae (5. 7% and 8.0%) and Anabantidae (4.47% and 2.8% respectively). The least were Characidae, Notopteridae and Mochokidae. The presence of an unnamed fish species in the river is an indication that there could be more unknown aquatic living resources with strong potential benefits to the River. The information provided in this study reflects the potential of the fish resources of Otammiri. This will serve as invaluable baseline tool in fisheries management planning and policy formulations that will enhance the development of fisheries in the area.
    Description: Includes: 15 references.
    Keywords: Ecology ; Fisheries ; Polycentropsis abbreviata ; Hepsetus odoe ; Synodontis omias ; Chrysichthys aluensis ; Chrysichthys furcatus ; Nigeria ; Otammiri River ; Index of preponderance ; Fisheries management ; Otammiri River ; freshwater environment ; automation
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 237-240
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  • 158
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    Fecundity, gonadosomic index and spawning period of Chrysichthys nigrodigitatus of the Lower Cross River, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24629 | 19325 | 2018-05-22 06:30:19 | 24629 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The estuarine catfish, Chrysichthys nigrodigitatus, is a prized food fish in Nigeria especially in the Niger Delta region. There is a growing concernrn over the sustainability of the fishery in the face of climate change and environmental variability. Studies were conducted on the fecundity, gonadosomatic index and the spawning period of the species. The objectives were to determine the average fecundity of the species and to use the gonadosomatic index to determine its spawning period with the aim of proffering management advice and prerequisites of the species in the face of climate change. A total of 44 females and 40 males were used for the study which spanned the period from May 2011 to April 2012. The fecundity of the species ranged from 3,730.5 eggs to 41,535.9 eggs. There was correlation between the total fecundity and fish weight (p~,01, r= 0.80, n= 44). The regression model for the relationship was expressed as fecundity = 4660.8+4.76 weight. The gonadosomatic index was highest in the month of May and dropped sharply in june signifying that spawning in Chrysichthys nigrodigitatus starts around this period. The implications of these findings in respect to sustainability of the species, and its aquaculture in the face of climate change are discussed.
    Description: Includes: 14 references.
    Keywords: Fisheries ; Atmospheric Sciences ; Chrysichythys nigrodigitatus ; Nigeria ; Lower Cross River ; C. nigrodigitatus ; Reproduction ; Climate change ; Cross Rivber ; Sustainability ; freshwater environment ; automation
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 253-255
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  • 159
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    Fish processing technologies in Eti-Osa Local Government Area of Lagos State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24671 | 19325 | 2018-05-23 07:46:56 | 24671 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Traditional fish processing technologies vary widely in terms of equipment type, size and processing efficiency in Nigeria's coastal states. This study was carried out to identify fish processing technologies and evaluate the effectiveness, energy sources and efficiency of fish smoking equipment in use in the study area. Data were collected using structured questionnaire administered between January and March, 2011 in seven fishing villages along the coastline in the lbeju-Lekki LGA, Nigeria. Major fish species being processed were identified; and the profitability of the post harvest technologies adopted was evaluated. A total of five traditional fish processing equipment were observed; and included galvanized iron sheet supported by planks 51 (46.4%); drum oven 8 (7.2%); black clay oven 24 (21.8%); red clay oven 9 (8.1%); brick kiln 5 (4.2%) and government model kiln 4 (3.5%). Generally, energy sources were fuel wood and charcoal for traditional fish processing equipment; and electricity for the government model kiln. Majority of traditional fish processors were peasant women; and three types of processing technologies were observed, including air drying (1.0%), hot smoking 169.1%); and salting and smoking (29.9%). The capacity of kilns and ovens observed ranged from 20 to 50kg daily with a price range of Nl0,000 to N50,000. Factors considered before replacement of smoking equipment by the processors were equipment ruggedness, cost and production capacity. Women's involvement in traditional fish processing was 95%; and major fish species in the value chain included Ethmalosa fimbriata, Caranx senegallus, Sardinella maderensis,Drepane africana, Cynoglossus monodis, Pseudotolithus megalensis, P. typus, Arius latiscutatus and A. mercatoris. It was observed that products of traditional fish processing industry were readily acceptable to consumers and commanded marginal market prices with optimal economic benefits to processors.
    Description: Includes: 25 references.
    Keywords: Fisheries ; Nigeria ; Fish value chain ; Coastline ; Processors ; Women ; Traditional fish processing equipment ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 423-427
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  • 160
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    Fisher folk's response to climate change in New Bussa and its environs of Kainji Lake Basin, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24661 | 19325 | 2018-05-27 14:57:38 | 24661 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study examined fisher folk responses to climate change in Kainji lake basin. The sample comprises of fisher folks within and New Bussa. Eighty questionnaires were administered to obtain the primary data and analysed using descriptive and inferential statistical tools. The results revealed that majority (70%) of the respondent were male, however (61.2%) of them had tertiary education. Majority (60%) of the respondents were aware of changes in climate in the area. Majority (65%) and (55%) of the respondents were involved in incidence of deforestation and charcoal production respectively. In conclusion, it was discovered that little knowledge about climate change and its effects were found among fisher folk. Therefore it recommends that sensitization workshops/lectures be done to enable the fisher folk have adequate knowledge on climate change and the implications on fisheries activities in the basin.
    Description: includes: 11 references.
    Keywords: Pollution ; Fisheries ; Nigeria ; Climate change ; Fisher folk ; Fishing community ; Awareness ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 380-384
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  • 161
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    Public relations and extension services in Nigerian fisheries industry (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24663 | 19325 | 2018-05-27 14:59:47 | 24663 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The paper discussed the importance of fish as a food commodity and the rich icthyofauna resources of Nigerian territorial which has not been optimally utilized to be sustainable. Among the challenges facing the fisheries subsector of Nigerian economomy apart from overfishing, poor post-harvest technology and high incidence of sea piracy is poor level of communications, public relations, restricted access to extension services especially to the rural artisanal fisherfolks/fish farmers in Nigeria . This has been identified as contributory to the increasing shortfall between demand and supply of fish in Nigeria. There is a need/or a good public image fisheries concerns. Production and marketing personnel need to respect the wishes of the consumers and have good interpersonal relationships. Communication should be a 2-way affair between the extension officers and the fisherfolks in the rural communities to be achieved. The various media that could aid better dissemination in the Fisheries subsector were highlighted. The author recommended better funding, training of extensionists and target audience, improved public sensitization of rural practitioners to fish output. There is a need for a more productive and result-oriented reform in Nigerian extension system. A unified extension is also recommended for effective extension education from the stage of production, handling, processing, transport and retailing. More conducive enabling environment should be created by the government.
    Description: Includes: 13 references.
    Keywords: Fisheries ; Nigeria ; Public relation ; Communication ; Funding ; Extensionists ; Fisherfolks ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 388-391
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  • 162
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    Comparative nutritional composition of smoked catfish (Clarias gariepinus) produced from NIOMR smoking kiln and local cut-drum oven (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24668 | 19325 | 2018-05-23 07:52:49 | 24668 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effects of two different preservative equipment-the NIOMR (Nigerian Institute for Oceanography and Marine Research) kiln and local cut-drum oven-on crude protein, minerals and vitamins of C. gariepinus were studied. The fish were obtained from Africa Regional Aquaculture Centre, Aluu, Port Harcourt. Moisture, crude protein, crude fibre, crude fat and ash content were determined using standard methods. There were significant differences (P〈0.05) in the moisture and crude fiber content. The moisture content of the fish sample ranged from 2.18 to 5.98, this could be attributed to the drying methods. The crude fibre content ranged from 2.78 and shows no significant difference. The ash content of the samples ranged from 0.25- 0.6%, an indication that smoking reduces the ash content of fish. Result of the crude protein of fresh fish was 21.84 ~c 1.10 which increased to 59.53 ~c 1.88 and 35.41 ~c1.00 in NIOMR smoking kiln and local oven respectively. This means that, there was a significant different in the effects of the two dryers on crude protein. The vitamin content of both ovens showed no significant difference except in vitamin A which was significant in the fish dried with smoking kiln. There was significant different (p〈0.05) in the mineral content of the two drying equipment, this was in Sodium, Potassium and Phosphorus level of fish smoked with NIOMR smoking kiln. This result indicates that the two drying methods have varying effects on the nutritional quality of catfish, which is in favour of NIOMR kiln.
    Description: Includes: 8 references.
    Keywords: Fisheries ; Nigeria ; Smoking ; Production ; Preservative research ; Quality ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 412-414
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  • 163
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    Regional survey of histamine in fish and fish products: Thailand (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26311 | 23782 | 2019-04-02 01:39:51 | 26311 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Thailand ; Histamines ; Fish ; Canned products ; Dried products ; Biological sampling ; Biochemical analysis ; Quality control
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 138-142
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  • 164
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    Regional survey of chloramphenicol, nitrofuran, malachite green and leuco-malachite green in fish and fish products: Myanmar (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26315 | 23782 | 2019-04-02 01:47:44 | 26315 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Aquaculture ; Fisheries ; Myanmar ; Drugs ; Aquaculture products ; Biological sampling ; Biochemical analysis ; Quality control
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 160-165
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  • 165
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    Regional survey of heavy metals in fish and fish products: Singapore (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26294 | 23782 | 2019-03-22 05:17:06 | 26294 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Singapore ; Heavy metals ; Arsenic ; Cadmium ; Lead ; Mercury ; Biological sampling ; Fish ; Fishery products ; Seafood
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 47-52
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  • 166
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    Regional survey of pesticide residues in fish and fish products: Singapore (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26302 | 23782 | 2019-03-27 05:50:18 | 26302 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Chemistry ; Fisheries ; Singapore ; Pesticides ; Biological sampling ; Fish ; Dried products ; Biochemical analysis ; Lethal limits
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 90-99
    Format: 10
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  • 167
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    Regional survey of histamine in fish and fish products: Malaysia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26308 | 23782 | 2019-03-27 03:44:10 | 26308 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Malaysia ; Histamines ; Biological sampling ; Biochemical analysis ; Fish ; Fishery products ; Quality control
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 124-128
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  • 168
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    Regional survey of chloramphenicol, nitrofuran, malachite green and leuco-malachite green in fish and fish products: Philippines (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26316 | 23782 | 2019-04-02 02:01:14 | 26316 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Aquaculture ; Fisheries ; Philippines ; Organic compounds ; Drugs ; Aquaculture products ; Fishery products ; Quality assurance ; Legislation
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 166-172
    Format: 7
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  • 169
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    Regional survey of histamine in fish and fish products: Philippines (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26310 | 23782 | 2019-03-27 05:46:04 | 26310 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Philippines ; Histamines ; Biological sampling ; Fish ; Fishery products ; Quality control
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 134-137
    Format: 4
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  • 170
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    Regional survey of chloramphenicol, nitrofuran, malachite green and leuco-malachite green in fish and fish products: Vietnam (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26318 | 23782 | 2019-04-02 02:44:00 | 26318 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Aquaculture ; Fisheries ; Viet Nam ; Drugs ; Organic compounds ; Fishery products ; Aquaculture products ; Biochemical analysis ; Quality control
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 177-181
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  • 171
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    Development of value-added fishery products (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26702 | 23782 | 2019-08-29 01:42:58 | 26702 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Studies on the development of value-added products using arrow squid (Loligo sp.) and bullet tuna (Auxis rocheii, R.) were conducted. The recommended steps in new product development were systematically followed while establishing control to all steps in these product development studies to ensure that the requirements for quality fishery products are met. New product concepts were generated, evaluated, and refined. The most plausible concepts were then advanced to the product optimization stage wherein samples were subjected to a series of sensory evaluations to come up with the standardized formulations. Three (3) squid products, namely squid nuggets, squid loaf, and squid rolls, and two (2) bullet tuna products, namely tuna loaf and dried seasoned tuna, were then subjected to either accelerated or actual shelf life testings, consumer acceptability testings, and cost analyses. In collaboration with a private company, the most promising technologies generated from the preceding activities were advanced to pilot-scale production in which the HACCP-concept of quality assurance was applied, and the hazards and critical control points associated with each step in the production of the new products were established. The resulting products were finally subjected to consumer testing at the Japan Food Expo '95 which proved their acceptability to the export market as well as the products' feasibility for commercialization.
    Keywords: Fisheries ; Fishery products ; HACCP ; Testing ; Fishery economics
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 153-161
    Format: 9
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  • 172
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    Quality assurance program for frozen surimi in Thailand (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26708 | 23782 | 2019-08-29 03:16:26 | 26708 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Frozen surimi has been a major export fishery product of Thailand for many years. Approximately 70% of its total production is exported to Japan, while the remaining is locally used and exported to France, Korea, Taiwan and Singapore. Although surimi is not categorized as a high risk item, as it is not a ready-to-consume product but prepared to serve as a raw material for a variety of surimi-based products, it still needs to meet the minimum requirements of product safety control. In this study, the quality assurance program is established for the Thai surimi industry. The guidelines are prepared and based upon risk assessment and potential health hazard identification associated with routine surimi production, from the point where raw material is received at the plant, through the line processing steps, and ending with the finished product s transportation. Besides the Hazard Analysis and Critical Control Point (HACCP) principles applied in this program, Good Manufacturing Practices and sanitation standard operating program are also added to strengthen the aim of assurance in food safety.
    Keywords: Fisheries ; Minced products ; Quality assurance ; Processing fishery products ; HACCP ; Thailand
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 224-233
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  • 173
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    Utilization of lizardfish, Saurida tumbil, for surimi production (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26705 | 23782 | 2019-08-29 08:02:13 | 26705 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Lizardfish, Saurida tumbil, is an abundant resource that is relatively underutilized. It is a potential raw material for surimi processing. Characterized by its ability to produce formaldehyde endogenously after catch, the lizardfish tends to have comparatively higher levels of formaldehyde, which is known to accelerate protein denaturation. As such minced meat from lizardfish has to be treated to enhance its gel-forming ability. The objective of this project is to improve the gel-forming ability of surimi made from fresh and frozen lizardfish by sodium pyrophosphate leaching (PL), and the use of egg white and beef-plasma protein concentrate. This was compared against the usual leaching (UL) method. Pyrophosphate leaching (PL) resulted in better gel-forming ability. Two-times of leaching using 0.2% sodium pyrophosphate resulted in the production of reasonably good quality fish jelly products from fresh and frozen lizardfish. Both egg white and beef-plasma protein concentrate improved the gel-forming ability of surimi from lizardfish. However, if the frozen raw material is of poor quality, neither pyrophosphate leaching nor the addition of egg-white or beef-plasma could improve the gel-forming ability of the surimi. The critical control point for raw material quality is its formaldehyde level. The best quality surimi is obtained when the formaldehyde level is below 15 ppm.
    Keywords: Fisheries ; Saurida tumbil ; Minced products ; Processing fishery products ; Experimental research
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 183-199
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  • 174
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    Brunei Darussalam: Problems encountered in data compilation (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26713 | 23782 | 2019-08-29 07:44:23 | 26713 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Fishery products ; Fishery data ; Brunei Darussalam
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 257
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  • 175
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    Singapore: Situation and problems faced by the fishery industry (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26717 | 23782 | 2019-08-29 05:55:56 | 26717 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Minced products ; Frozen products ; Fishery economics ; Singapore
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 265-267
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  • 176
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    Energy analysis of fishing and processing fish in Japan (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26724 | 23782 | 2019-08-29 00:55:51 | 26724 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Energy ; Fishing ; Processing fishery products ; Japan
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 23-35
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  • 177
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    Indonesia: Problems on compilation of data on fish and fish products (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26714 | 23782 | 2019-08-29 07:40:48 | 26714 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Fishery data ; Fisheries ; Fishery products ; Indonesia
    Repository Name: AquaDocs
    Type: book_section
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    Format: 258-259
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    Development of an underutilized fish species - male capelin (Mallotus villosus) (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26723 | 23782 | 2019-08-29 01:05:10 | 26723 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Gadoid fisheries ; Proteins ; Fishery economics ; Fishery products ; Processing fishery products ; Packing fishery products
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 18-22
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  • 179
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    Storage lives of chilled and frozen scampi (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26728 | 23782 | 2019-08-28 05:29:51 | 26728 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Freezing storage ; Thawing ; Odour ; Taste ; Acceptability ; Lobster fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 73-85
    Format: 13
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  • 180
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    Development of fishery post-harvest technology in Indonesia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26729 | 23782 | 2019-08-28 05:13:12 | 26729 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Fisheries ; Fishery resources ; Fishery economics ; Fishery technology ; Indonesia
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 89-97
    Format: 9
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  • 181
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    Determination of ash (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26801 | 23782 | 2019-10-22 05:10:19 | 26801 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure in the determination of ash in meat. Specifically, the procedures in the sample preparation, instrument and apparatus required, and the analytical procedures and calculation for each method are presented.
    Keywords: Chemistry ; Fisheries ; Ashes ; Ash content ; Heating ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Microbiological analysis ; Standards ; Specifications
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: A-2.1
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  • 182
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    Liquid smoking of some fishery products (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26740 | 23782 | 2019-09-12 03:29:18 | 26740 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Natural and liquid smoking of striped catfish (Pangasius sutchi), chub mackerel (Rastrelliger brachysonus), squid (Loligo edulis) and green mussel (Mytilus viridis) were compared to evaluate the feasibility of liquid smoking of these products. The appropriate brine concentration and brining time as well as liquid smoke concentration and soaking time for each product were determined. The acceptability of these smoked products was tested by sensory evaluation using a nine-point hedonic scale. The characteristics of the products judged were colour, flavour, odour, texture and overall acceptability. A panel of 14 judges was drawn from the faculty members and students of the Department of Fishery Products, Faculty of Fisheries. The results were statistically analyzed using Student s t-test. The appropriate brine concentration and brining time for striped catfish, chub mackerel, squid and green mussel were 15% for 7 min; 20% for 30 min; 15% for 10 min and 5% for 4 min, respectively. The suitable liquid smoke concentration and soaking time for striped catfish and chub mackerel were 10% for 15 min; for squid and green mussel the appropriate concentration and soaking time were 6% for 15 min and 1% for 2 min respectively. The sensory evaluation scores of both natural and liquid smoked products were comparable. The scores for colour, flavour, odour, texture and overall acceptability of striped catfish, chub mackerel and green mussel were not significantly different. However, the score for odour of liquid smoked squid was significantly lower than that of natural smoked squid (P=0.05) but all other characteristic scores were not significantly different.
    Keywords: Fisheries ; Fishery products ; Curing ; Brines ; Acceptability ; Evaluation
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 221-229
    Format: 9
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  • 183
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    The problems of quality and food hygiene of seafood exported from Southeast Asia to Japan (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26725 | 23782 | 2019-08-28 07:49:52 | 26725 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Fishery products ; Trade ; Inspection ; Standards ; Food additives
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 36-52
    Format: 17
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  • 184
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    From basic research to new industries within marine biotechnology: Successes and failures in Norway (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26727 | 23782 | 2019-08-28 05:40:18 | 26727 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Biotechnology ; Research ; Research programmes ; Research institutions ; Education establishments ; Norway
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 63-72
    Format: 10
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  • 185
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    The K value as a freshness index for tropical food fish and its application as a quality control tool during fish storage and distribution (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26743 | 23782 | 2019-09-12 01:49:08 | 26743 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The K value, expressed as K value % = HxR + Hx /ATP + ADP + AMP + IMP + HxR + Hx x 100 is a good index for estimating the enzymatic freshness of fish. The changes in K value of various species of tropical food fishes during ice-storage had been studied. It was found that these warm water fishes deteriorate slowly under ice-storage preservation. A study was made on the K value changes of three species of fish (Polynemus sp., Rastrelliger kanagurta and Pampus argenteus) in a supermarket distribution chain. Most sets of data showed changes of quality; from the point of supply until the morning after an overnight stay on display shelves. The results support a conclusion that the shelf life limit of fresh tropical food fish, based on sensory evaluation, was, when handled well, between 12 to 28 days ice-storage depending on species, with the K value ranging from 24 -37%.
    Keywords: Fisheries ; Food fish ; Tropical fish ; Quality control ; Freezing storage
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 250-257
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  • 186
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    Assessment of mercury contents of tuna in East Indonesian seas (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26747 | 23782 | 2019-09-12 00:54:43 | 26747 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Samples of meat were taken from tuna landed at Ambon, Biak, Bitung and Denpasar between August 1989 and February 1990 at two month intervals. They were flown to Jakarta for assessment of their mercury content. It was found that the mercury content did not increase with size of tuna. The mercury content of tuna was generally well below 0.5 ppm, although samples from Ambon were higher than those from other three landing places.
    Keywords: Fisheries ; Mercury ; Tuna fisheries ; Indonesia
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 283-285
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  • 187
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    Histamine content changes during processing of canned tuna by Indonesian canning factories (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26745 | 23782 | 2019-09-13 00:50:39 | 26745 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: An assessment was carried out on histamine content of three canning factories. These factories are located in East Java (A), Bali (B) and North Sulawesi (C). Histamine contents were assessed along various stages of their processing. Results showed that histamine contents changed during processing of canned tuna in both A and B factories and that they increased significantly especially after steaming. In contrast, decreasing histamine content was noted during processing of canned tuna at factory C. These results seem to stem from the fact that a lot of raw material was processed by factories A and B. Histamine was probably produced during delays along the processing line. This was in contrast to factory C in which a special tuna fish was processed for the study and only a small quantity of fish was going through at the time.
    Keywords: Fisheries ; Canned products ; Canning ; Fishery industry plants ; Histamines
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 273-276
    Format: 4
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  • 188
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    Canned tuna quality management manual (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26792 | 23782 | 2019-10-01 02:38:00 | 26792 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Canned products ; Quality control ; Inspection ; HACCP ; Evaluation ; Fishery industry equipment ; Fishery industry plants ; Packing fishery products
    Repository Name: AquaDocs
    Type: book
    Format: application/pdf
    Format: application/pdf
    Format: 203
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  • 189
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    Laboratory manual on analytical methods and procedures for fish and fish products (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26799 | 23782 | 2019-11-12 05:20:14 | 26799 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The manual provides useful guides for laboratory workers and technical personnel. The procedures for determining the physical and chemical properties of fish meat, the analysis of oils and some additives and microbiological procedures are also included.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Microbiological analysis ; Fishery products ; Processed fishery products ; Fish inspection ; Fishery industry ; Food additives ; Food technology ; Standards ; Specifications
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  • 190
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    Inspection/verification of a tuna cannery (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26795 | 23782 | 2019-10-01 02:16:18 | 26795 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Fishery industry equipment ; Fishery industry plants ; Inspection ; Quality control
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 73-92
    Format: 20
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  • 191
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    Analysis of additives: Detection of polyphosphates (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26839 | 23782 | 2019-11-15 08:02:24 | 26839 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Polyphosphates are commonly used in the production of fish jelly products. The paper provides the methodology in the detection of polyphosphates in fish products. Instructions on the preparation of sample solution and the apparatus and reagents needed are presented. Detailed procedures in the chromatographic separation of polyphosphates are also provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Additives ; Food additives ; Phosphates
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: D-1.1-D-1.3
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  • 192
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    Preliminary investigations of Njuwa Lake, Adamawa State, for fish production enhancement and resuscitation of Njuwa annual cultural fishing festival (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23228 | 19325 | 2018-03-18 14:56:29 | 23228 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Lake Njuwa has a historical and cultural heritage and has been a veritable source of livelihood to the people of Yola town on the South-western side, and Rugange village on the North-eastern side of the lake. Many Rivers and streams flow into the Lake. From the South Western side River Chouchi and Mayo Chudde; from the South Eastern side by numerous streams such as Mayel Lumo, Mayel Kalwa, Mandare streams and many other small streams (about five) drain into Njuwa Lake. The major contributor to the Lake is a "neck" in the North Eastern side of the Lake which emanates from Benue River. When River Benue is full especially when Lagdo spill gates are open in September, the neck allows water from the back-flow of Benue to enter the Lake and with it comes the recruitment of the Lake's fish species diversity Preliminary investigation revealed that Njuwa Lake despite its numerous environmental problems which sometimes leads to its complete drying, has very ideal limnological parameters for fish production. Njuwa was reported to be 17.5km2 (17500m2) before the construction of Lagdo dam on River Benue on the Nigeria-Cameroon boarder by the Cameroonian Authorities and the numerous irrigation projects around the Lake and River Benue. As at December 1981 however, aerial photos showed that it had shrunk to 3.5 km (3,500m2). As at November 2004, it has completely dried up. It was reported that cars could actually drive through on the dry bed of the Lake. The average depth of the Lake is around 0.5 meters and the water is very turbid. Farming around the Lake has triggered a higher level of deposit into the flood water which serves as silting material for the Lake. This is in addition to farm chemicals run off from the rain fed and irrigated crop, increasing the nutrient supply to lake's water thereby leading to accelerated eutrophication with it adverse consequences. Fish species diversity is also very high from on site report. Therefore the lake offers a unique potential for both artisanal fishing and fisheries tourism through the resuscitation of the cultural fishing festival despite the environmental degradation that it has suffered over the years. In view of the great prospects of the Njuwa Lake basin, if properly developed for its multidimensional benefits to the local economy in tourism job creation, food security, livelihood diversity and environmental improvement, the development of the lake basin on a holistic basis is highly recommended. The process should capture and involve the interest of all stakeholders around the Lake.
    Description: Includes:- 1 table.;1 fig.
    Keywords: Fisheries ; Limnology ; Nigeria ; Njuwa L. ; freshwater environment ; Fishery development ; Water conservation ; Fishery management
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 99 - 105
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  • 193
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    Food and feeding habit of freshwater Mormyrid (Hyperopisus bebe occidentalis, Gunther) in River Rima and Goronyo Dam, Nigeria (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23231 | 19325 | 2018-03-18 15:06:24 | 23231 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The food and feeding habits of Hyperopisus bebe occidentalis caught in River Rima and Goronyo Dam in North western Nigeria were investigated A total of four hundred and fifty four (454) fish samples were collected on monthly basis from October, 2001 to September, 2002 are examined for feeding adaptations and gizzard content. The mouth is terminal in studied species. Two types of teeth were identified viz; cardiform and molariform. The gill rakers were 0.09~c 0.04cm in length with 0.010~ccm interspacing. The compartment of gut included gizzard-like stomach. The gut length and fish length (GL-TL) indicated rectilinear positive relationship. The regression coefficient (b) and correlation coefficient (r) of the gut length fish length relationships were significant (p〈 0.05). The main taxa of food items identified included substances of plant and animal origins, with overall percentage occurrence of 69.8 and 20.7% for samples from River Rima and 59.1 and 20. 0% for those from Goronyo Dam in the same order. During the dry season, the frequency occurrence of plant substances were higher in the juveniles (〈30cm, TL) 70.9% and adults (=30cm, TL) 64.7% in River Rima than the values obtained in samples from Goronyo Dam. Their occurrences in Goronyo Dam were fairly higher in the adults (62.9%) than in the juveniles (53.6%) during the same season. The results of this study showed higher occurrence of plant materials in juveniles than in the adults from the two water bodies during the rainy season. Contrary to this, low frequency occurrence of substances of animal in the juvenile samples from River Rima (15.2%) and Goronyo Dam (17.1%) were obtained in adult samples, the occurrence of animal substances were more than those of plants from the two seasons and water body. The feeding adaptive features revealed the ecological roles of the fish species that could be useful in satisfying their food requirements in culture systems and for teaching and further research.
    Description: Includes:- 5 tables.;19 refs.
    Keywords: Ecology ; Fisheries ; Hyperopisus bebe occidentalis ; Nigeria ; Rim R. ; Nigeria ; Goronyo Dam ; freshwater environment ; Feeding behaviour ; Feeding ; Food preferences
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  • 194
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    Potentials of some medicinal plants as fertility enhancing agents in fish (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23236 | 19325 | 2018-03-18 15:14:46 | 23236 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The potentials of some medicinal plants that enhance fertility in animals were highlighted. Though, these medicinal plants can be used for other purposes but this paper focused on the fertility potential of the plants on animals. Some of the plants such as date palm (Phoenix dactylifera), wild yam (Discorea villosa) and Focus capensis had been discovered to enhance fertility in rats, monkey and poultry. Therefore if these medicinal plants could work on rats and poultry for fertility enhancement, the plants could as well be tried on fish so as to enhance the fecundity and sperm production in female and male brooders which will eventually lead to increase in fish seeds production. However, research is on going on the use of some medicinal plants to enhance fecundity and sperm production in male and female brooders in order to increase fingerlings production which would subsequently lead to increase in fish production.
    Description: Includes:- 1 table.;12 plates.;22 refs.
    Keywords: Aquaculture ; Fisheries ; Nigeria ; freshwater environment ; Fertility ; Aquatic plants
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 153 - 164
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  • 195
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    Socio-cultural impact of tourism in Nigeria: a case study of fisheries development in Nigeria (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23244 | 19325 | 2018-03-25 12:38:25 | 23244 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Socio-cultural impact of tourism has become a veritable tool for fisheries development in Nigeria. Little wonders that Nigeria who has a great potential in tourism and rich cultural heritage and notable festivals attracts tourist not only in Nigeria but other parts of the World are not fully explored. Among many other popular festivals is the Niger Delta holds the Ikwere, Kalabari and Obirika festivals, to celebrate the water head dress that imitate the heads of fish or water birds. Many communities, including those in north, have a version of the harvest festival. Also in the north, the Argungu fishing festival occasion takes place in Argungu, in Birnin Kebbi State, during February and dates back to the 16th century. During the festival, hundreds of local men and boys enter the water armed with large fish net scoops, and the competition is to catch the biggest fish. With a population of almost 140 million people comprising of over 250 ethnic groups, Nigeria is a blend of exciting socio-cultural diversity that has produced a land of un parallel opportunities for fisheries development.
    Description: Includes:- 11 refs.
    Keywords: Fisheries ; Law ; Sociology ; Nigeria ; freshwater environment ; Sociological aspects ; Tourism ; Fishing ; Recreation
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 222 - 228
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  • 196
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    A review of length-weight relationship and its parameters in aquatic species (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23248 | 19325 | 2018-03-25 12:51:59 | 23248 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Length weight relationship and its parameters are requiring in practical assessment of stocks of aquatic species. The exponent b describes the growth condition of the species in question. If the value of b is 3 around 3, the fish is said to exhibit isometric growth if the value of b is less or greater than 3 the species is said to exhibit isometric growth if the value of b is less or greater than 3 the species as exhibiting both isometric and allometric conditions. Such conclusions are erroneous and misrepresentation of scientific facts. They stem from the use of inappropriate methods in estimation of the LW parameters and the authors? lack of understanding of the biological theory behind the growth conditions. To correct these erroneous presentations, the paper highlights the appropriate approach for the estimation of the LWR parameter. Large sample size. Wide size range and appropriate statistical tools are essential ingredients for accurate estimation of the LW parameters. The paper also elucidates on the concept of isometric and allometric growth in fishes and other invertebrates. A minimum of one year time scale of data collection in order to capture all the size ranges, from the young of the year to the oldest individual in the population, so as to reflect the ontogenetic growth performance of the aquatic species, have been proposed
    Description: Includes:- 4 tables.;15 refs.
    Keywords: Ecology ; Fisheries ; Ethmalosa fimbriata ; Cirrhinus reba ; Rhinomugil corsula ; Micropogonias furnieri ; Nigeria ; freshwater environment ; Length ; Length-weight relationships ; Body size ; Body weight ; Growth
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    Format: 240 - 244
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  • 197
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    Occurrence and dissolution of rigor-mortis in Bagrus bayad macropterus and Mormyrus rume from River Rima Sokoto (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23251 | 19325 | 2018-03-25 14:33:27 | 23251 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: A total of eighty nine samples comprising 45 B. bayad and 44 M.rume from River. Rima were subjected to evaluation of rigor-mortis occurrence and dissolution; Total weight and total length of the species were measured using electric top loading balance (16000gm) and measuring board, respectively. Stop watch and calibrated thermometer were used for recording time and temperature to determine rigor mortis duration and temperature effect. The results showed that the duration from capture to dissolution of rigor was higher in M.rume than B. bayad, despite the fact that temperature ranges were similar. Factors such as size distribution and level of exhaustion might have contributed to the variations. In the light of the above, it is recommended that factors resulting to rapid exhaustion of B. bayad be looked into with a view to lowering it and subsequent elongation of the rigor period.
    Description: Includes:- 2 tables.;10 refs.
    Keywords: Fisheries ; Bagrus bayad macropterus ; Mormyrus rume ; Nigeria ; freshwater environment ; Fish spoilage ; Quality control
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  • 198
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    Relationship between the rainfall, water levels, flooding and fish supply from Asa Dam (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23247 | 19325 | 2018-03-25 12:49:34 | 23247 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Studies on the relationship between the rainfall, water levels and floods in Asa Dam Ilorin, Kwara State Nigeria was carried out for twelve months to determine the impact of these parameters on the supply of fish species from this dam to Ilorin and environ. Maximum rainfall (26.14 cm) was in September. The range values of rainfall recorded during this research was zero (November / February) to 26.14 cm (September). Water levels were lowest in April (11.40 m) and highest in September (12.80 cm). Increased water levels commenced from May (11.90 m) to October (12.60 m). The flooding of the dam began as from August when the dam spillway began to overflow. Assessment of fish catch from six fishermen around the lake showed significant increase in the fish supply at the dry season when water levels were low than the wet season (P 〈 0.05). Rainfall and water levels were negatively correlated.
    Description: Includes:- 1 table.;1 fig.;14 refs.
    Keywords: Environment ; Fisheries ; Nigeria ; Asa L. ; freshwater environment ; Rainfall ; Water levels ; Flooding ; Fish catch statistics
    Repository Name: AquaDocs
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  • 199
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    The fishery of Lake Yamama, Kebbi State, Nigeria (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23256 | 19325 | 2018-03-25 14:42:01 | 23256 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The highlights of the Fisheries Assessment Survey conducted at Yamama Lake in Kebbi State, North-western Nigeria in 2005 is presented. There were 17 fish species found in fishermen's landings during the survey period. About 25 fishermen were found using undersized nets to catch the juveniles of these species. Fishing pressure was found to be very high. The lake is 900 m in length and 195 m wide giving a surface area of about 18 hectares. For an optimum catch, about 4 fishermen ought to have engaged in full time fishing activities if the fisheries of the lake are to be managed on a sustainable basis. However, a surplus of over 100 fishermen was recorded actively fishing during the period of the assessment. All these have a depleting effect on the abundance and sizes offish caught from the lake. A community based fisheries management system, which establishes a participatory involvement of fishermen in the conservation and rational exploitation of fisheries resources for the well being of the stakeholders is recommended for the Lake.
    Description: Includes:- 3 tables,;1 fig,;4 refs.
    Keywords: Fisheries ; Nigeria ; Yamama L. ; freshwater environment ; Stock assessment ; Catch statistics ; Catch/effort ; Fishermen ; Fishermen statistics ; Fishery statistics
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 284-290
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  • 200
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    Nutrient composition of three commercially important fishes in Lake Kainji, Nigeria (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23331 | 19325 | 2018-04-06 16:11:10 | 23331 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The proximate composition, mineral content and amino acid profile of Synodontis membraneceous, Oreochromis niloticus and Pellonula afzeluisi was conducted. Results showed that P. afzeluisi had the highest crude protein content (73.00%) amino acid and mineral content. This was followed by O. niloticus (57.87%) and S. membraneceous (54.56%). Organoleptic analysis however showed that O. niloticus had significant overall acceptability, taste and aroma.
    Description: Includes:- 4 tables.;13 refs.
    Keywords: Fisheries ; Synodontis membraneceous ; Oreochromis niloticus ; Pellonula afzeluisi ; Nigeria ; Kainji L. ; freshwater environment ; Nutrition ; Nutritional types ; Sodium ; Calcium ; Potassium ; Magnesium ; Phosphorus ; Amino acids
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 46-48
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