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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/6148

Title: Age Determination and Growth Rate of the Freshwater Clam Galatea Paradoxa (Born 1778) from the Volta
Authors: Adjei-Boateng, Daniel
Wilson, Gow James
Keywords: Surface rings
Tagging-recapture
Length-frequency distributions
growth curves
Issue Date: 3-Aug-2013
Publisher: Journal of Aquatic Science
Citation: Journal of Aquatic Science, 2013, Vol. 1, No. 2, 31-38
Abstract: The age and growth of the freshwater clam Galatea paradoxa from the Volta River estuary, Ghana was estimated during a two-year study using surface growth rings, length-frequency distributions and tagging recapture experiment. Mean lengths at ages 1 to 8 years were 19.4, 28.4, 37.1, 44.1, 49.5, 55.5, 65.6 and 73.1 mm, respectively. The von Bertalanffy growth curves obtained by three the methods were: Lt = 80.4(1-e-0.17t), Lt = 105.7(1-e-0.14t) and Lt = 104.5(1-e-0.16t) for surface rings, length-frequency distributions and tagging recapture respectively. All the age determination methods were successful in estimating the age of G. paradoxa indicating that surface ring counting is an appropriate and reasonably accurate method for simple and rapid age estimation in this species. The estimated growth curves obtained from surface rings, length-frequency distributions and the tagging-recapture experiment revealed that the methods provided similar estimates of growth rates.
Description: An article published by Journal of Aquatic Science, 2013, Vol. 1, No. 2, 31-38
URI: http://hdl.handle.net/123456789/6148
Appears in Collections:College of Agric and Natural Resources

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