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Trace elements in barnacle, egg contents, and egg shells of the critically endangered hawksbill turtle (Eretmochelys
Zahra Naghilou1, Fatemeh Rajaei1, Reza Dahmardeh Behrooz2
1Department of Environmental Sciences, Faculty of Science, University of Zanjan, Zanjan, 45371-38791, Iran.
Abstract:
Ten toxic Trace elements, heavy metals, were investigated in the egg contents, egg shells, and barnacles isolated from the shell of the hawksbill turtle (Eretmochelys imbricata) from the Persian Gulf, Iran. This research represents the first use of barnacles adhered to turtle shells as bioindicators for assessing heavy metal levels in the egg contents and egg shells of hawksbill turtles. The findings revealed a significant positive correlation between arsenic and zinc levels in both barnacles and turtle egg contents (As, p < 0.01, r = 0.71 and Zn, p < 0.05, r = 0.37). Additionally, a significant positive correlation was identified between lead concentrations in egg shells and barnacles (p < 0.01, r = 0.61). These results suggest that barnacles could serve as effective bioindicators for monitoring heavy metal contamination in marine ecosystems affecting hawksbill turtles.
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