Title | Effects of clam size on heavy metal accumulation in whole soft tissues of Galatea paradoxa (Born, 1778) from the Volta estuary, Ghana |
Publication Type | Journal Article |
Year of Publication | 2009 |
Authors | Amisah, S, Adjei-Boateng, D, Obirikorang, KA, Quagrainie, KK |
Journal | International Journal of Fisheries and Aquaculture |
Volume | 1 |
Issue | 2 |
Pagination | 14 - 21 |
Date Published | 2009 |
Keywords | Galatea paradoxa, Heavy metals, size classes, volta estuary |
Abstract | The Volta basin clam, Galatea paradoxa, is collected for food and remains an important affordable protein source for the riparian communities in the catchment. Clams accumulate metals in their soft tissues, which can be toxic to humans when consumed. A study was, therefore, carried out to examine the concentrations of Mn, Zn, Fe and Hg in G. paradoxa, at 3 different size classes: small (20 - 40 mm), medium (41 – 60 mm) and large (>60 mm) at Ada and Aveglo in the Volta estuary area in Ghana. The concentrations of heavy metals in the clams varied considerably between the two locations. There were, however, no significant differences (p > 0.05) in Mn, Fe and Zn concentrations among the different size classes, indicating a similar bioavailability of the metals at both locations and, possibly, an efficient metabolism to keep the concentrations of Mn, Fe and Zn relatively similar. Mercury concentrations in the Ada clams varied significantly (p < 0.05) among the different size classes. A Risk Analysis indicated that the concentrations of heavy metals in the clams were within acceptable limits and safe for human consumption. |
URL | http://www.researchgate.net/publication/202401887_Effect_of_clam_size_on_heavy_metal_accumulation_in_whole_soft_tissues_of_Galatea_paradoxa_(Born_1778)_from_the_Volta_estuary_Ghana/file/d912f5138904d96207.pdf |
Notice of Publication Number | NOP 09-A04 (English) |