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    Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12348/3080

    Population dynamics of the freshwater clam Galatea paradoxa (Donacidae) in the Cross River, Nigeria

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    Abstract
    • The growth of freshwater clam Galatea paradoxa (Born) from the Cross River, Nigeria, was studied based on a count of growth checks on shells, presumed to be laid down annually. Mean lengths at ages 1 to 5 were 4.1 cm, 5.9 cm, 7.4 cm, 8.4 cm and 9.0 cm, respectively; maximum observed size was 11.1 cm. Growth conformed to the von Bertallanffy growth model with the parameters L sub( infinity ) = 11.2 cm, K = 0.3 year super(-1) and t sub(0)=0.5 year super(-1). Total and natural mortalities were estimated at 0.8 and 0.3 year super(-1), respectively; the statusof the fishery is briefly discussed.
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    • Resilient small-scale fisheries [1234]
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    • FB_2987.pdf (225.3Kb)
    Date
    • 1991
    Author
    • King, R.P.
    • Egwali, E.C.
    • Nkanta, N.A.
    AGROVOC Keywords
    • shellfish; fisheries; freshwater; Mollusca
    Type
    • Journal Article
    Publisher
    • ICLARM
    Metadata
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