[
    {
        "id": 207386,
        "series_id": 26,
        "series_slug": "histsyn-rashkb-journal-engine",
        "series_title": "RASHKB Journal 皇家亞洲學會香港分會學刊",
        "series_use_hku_proxy": false,
        "document_key": "RAS-1975",
        "page_number": 154,
        "title": "RAS-1975",
        "content_text": "146\n\nBRIAN MORTON & P. S. WONG\n\n2.0\n\nWEIGHT OF OYSTER PRODUCED (METRIC TONS)\n\n1500\n\n1000\n\n500\n\n*\n\n中\n\n**\n\n\"+15\n\n-1.0\n\n55\n\n-0.5\n\nVALUE OF OYSTER PRODUCED (MILLIONS OF HK DOLLARS)\n\n1954 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73\n\nFigure 2. Annual production of oysters in Hong Kong from 1960 to 1973. (Data obtained from the Hong Kong Annual Departmental Report by the Director of Agriculture and Fisheries, 1953-54 to 1973-74.)\n\nland receive less profit each year and eventually fail. The great reduction in the availability of man-power is probably the greatest factor, since the younger, educated and more urbanized generation prefer less labour-demanding employment. There is a shortage of manual labour especially during the busy season in Spring and early Summer. The political sensitivity of this border area is also a problem so that as the Director of Agriculture and Fisheries reported in 1951-52 “flotillas of up to twenty boats manned by about one hundred oyster pirates not being uncommon.\" A dispute in 1966-67 over oyster bed No. 5 reduced production figures considerably (Fig. 2).\n\nImprovement may be possible by introducing new methods of culture. The bottom-laying method of culture is primitive and keeps the oyster industry in a more or less unmanaged state. In the United States, a comparison of public and private oyster grounds reveals striking differences in yield between management techniques practiced in each area (Bardach and Ryther, 1968). Investigations into new methods of cultivation have been made by the Agricultural and Fisheries Department of the Hong Kong Government.",
        "txt_file_path": "txt/dfo323lmgvd/RAS-1975.txt",
        "external_url": "https://digitalrepository.lib.hku.hk/catalog/j0995146d",
        "rank": 0
    },
    {
        "id": 207388,
        "series_id": 26,
        "series_slug": "histsyn-rashkb-journal-engine",
        "series_title": "RASHKB Journal 皇家亞洲學會香港分會學刊",
        "series_use_hku_proxy": false,
        "document_key": "RAS-1975",
        "page_number": 156,
        "title": "RAS-1975",
        "content_text": "148\n\nBRIAN MORTON & P. S. WONG\n\nchi, 1966) by the application of anti-fouling paints. Undoubtedly the main disadvantage to this technique is that a large capital investment is required with high maintenance costs and a greater chance of damage and loss during a typhoon. As noted earlier oyster culture in Deep Bay is at present being run on a family basis lacking a large capital investment. The adoption of the more expensive raft method of culture would appear, under present socio-economic conditions, to be impossible. The setting up of a co-operative system by the oyster farmers concerned, together with an extension of the Government loan scheme for fisheries development to the oyster industry could enable the oyster farmers to obtain the necessary finance to improve the industry. With an available source of funds for investment and with further detailed research to determine the modifications required to ensure the success of a programme of modernisation in the special environment of Deep Bay, Hong Kong's oyster industry is not without a future.\n\nLITERATURE CITED\n\nBardach, J. E. and J. H. Ryther, 1968.\n\nThe Status and Potential of Aquaculture. American Institute of Biological Science, Washington, D.C. Vol. I (261pp.), Vol. II (224pp.).\n\nBromhall, J. D., 1958. On the biology and culture of the native oyster of Deep Bay, Hong Kong, Crassostrea sp. Hong Kong University Fisheries Journal, 2; 93-107.\n\nCahn, A. R., 1950. Oyster culture in Japan. The United States Fisheries and Wildlife Services Fisheries Leaflet, 383; 1-80.\n\nFurukawa, Atsushi, 1968. The raft method of oyster culture in Japan. In: Proceedings of the Oyster Culture Workshop (Ed. T. L. Linton). Marine Fisheries Division, Georgia Game and Fish Commission, Brunswick, Georgia, pp. 49-54.\n\nHong Kong Annual Departmental Report by the Director of Agriculture and Fisheries, 1953-54 to 1973-74. The Hong Kong Government.\n\nKnight-Jones, E. W., 1952. Reproduction of oysters in the rivers Crouch and Roach, Essex during 1947, 1948, 1949. Fishery Investigations, London, 18; 1-48.\n\nKorringa, P., 1947. Relations between the moon and periodicity in the breeding of animals. Ecological Monographs, 17; 347-381.\n\nLeung, C., B. S. Morton, K. F. Shortridge and P. S. Wong, 1975. The seasonal incidence of faecal bacteria in the tissues of the commercial oyster Crassostrea gigas Thunberg 1793 correlated with the hydrology of Deep Bay, Hong Kong. Proceedings of the Pacific Science Association Special Symposium in Marine Science, Hong Kong 1973; 114-127.",
        "txt_file_path": "txt/dfo323lmgvd/RAS-1975.txt",
        "external_url": "https://digitalrepository.lib.hku.hk/catalog/j0995146d",
        "rank": 0
    }
]