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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/6149

Title: Body condition and gametogenic cycle of Galatea paradoxa (Mollusca: Bivalvia) in the Volta River estuary, Ghana
Authors: Adjei-Boateng, D.
Wilson, J. G.
Issue Date: 2011
Publisher: Estuarine, Coastal and Shelf Science
Citation: Estuarine, Coastal and Shelf Science , pp.1-5
Abstract: The reproductive cycle of Galatea paradoxa which is the basis for an artisanal fishery in the Volta River estuary, Ghana, was studied using condition indices and histological methods from March 2008 to July 2009. The cycle is annual with a single spawning event between June and October. Gametogenesis starts in November progressing steadily to a peak in June-July when spawning begins until October when the animal is spent. The condition indices (shell-free wet weight/total wet weight, ash-free dry weight/shell weight and gonad wet weight/shell weight) showed a clear relationship with the gametogenic stage rising from a minimum at stage (I) start of gametogenesis, to their highest values at stages (IIIA) ripe and (IIIB) start of spawning before declining significantly to stage (IV) spent. It is suggested that condition index may prove a valuable technique in fishery management to recognise the reproductive stages of G. paradoxa as it is less expensive and time consuming than histological techniques in addition to being easier to teach to non-specialists. The data presented in this study provide information on the timing of spawning events for G. paradoxa, which is necessary for developing sustainable management strategies and selection of broodstock for aquaculture
Description: An article published by Estuarine, Coastal and Shelf Science , pp.1-5, 2011
URI: http://hdl.handle.net/123456789/6149
Appears in Collections:College of Agric and Natural Resources

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