Gastropod Molluscs As Indicators Of The
Cadmium Natural Inputs In The Canarian
Archipelago (Eastern Atlantic Ocean)
Author(s)
R. Ramírez, C. Collado, O. Bergasa, J. J. Hernández
& M. D. Gelado
Abstract
Nowadays, gastropod molluscs are being utilized more and more as bioindicator
organisms. Similarly, harmful metals on human health such as cadmium have
been widely studied. The Canarian Archipelago (specifically the eastern islands)
is constantly bathed by the African coastal upwelling, provoking oceanographic
and biological differences between the islands. This process could assume an
increase in the Cd concentration in their coastal waters and in the biota. Thus, in
order to assess this fact, we measured cadmium concentrations in the soft parts
of two species of limpets (Patella rustica and Patella candei crenata) and in a
topshell snail (Osilinus atrata). Metal determination was performed using atomic
absorption spectrometry (AAS). We found significant differences for metal
concentrations between the eastern islands and the western islands for all
species. P. rustica, P. c. crenata and O. atrata presented values ranging from
7.71, 2.11 and 7.56 µg g -1 dry wt. (eastern islands) to 1.38, 0.4 and 1.08 µg g -1
dry wt. (western islands) respectively. Therefore, we concluded that limpets and
topshell snails seem to be suitable indicators of the cadmium concentrations in
the coastal waters of the Canary Islands.
Keywords: Canary Islands, heavy metals, cadmium, gastropod molluscs, Patella
rustica, Patella candei crenata, Osilinus atrata.
Keywords
Canary Islands, heavy metals, cadmium, gastropod molluscs, Patella
rustica, Patella candei crenata, Osilinus atrata.
Related Book
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