US EPA

1018222 

Journal Article 

Trace element concentrations in nesting flatback turtles (Natator depressus) from Curtis Island, Queensland, Australia 

Ikonomopoulou, MP; Olszowy, H; Limpus, C; Francis, R; Whittier, J 

2011 

1 

Marine Environmental Research
ISSN: 0141-1136 

71 

1 

10-16 

English 

20933265 

10.1016/j.marenvres.2010.09.003 

WOS:000287276100002 

The blood and eggs of the flatback turtle (Natator depressus) sampled when nesting at Curtis Island, Queensland, Australia. In the blood, zinc was present at the highest concentration of 151.15 ± 1.45 μg/L followed by copper (7.74 ± 0.09 μg/L). Lead was found only in some individuals. The measured trace elements in the blood were maternally transferred into the eggs. Other metals and metalloids detected in eggs were chromium, manganese, arsenic and selenium. Eggs showed a more complex trace element profile than blood, suggesting that they provided more representative tissues for determining maternal levels of trace element accumulation in N. depressus. Intra-clutch variation was over 15% for most of the studied trace elements suggesting one egg is not in sufficient to determine trace element accumulation within a clutch. Copper was the only element which was positively correlated with breeding age. Furthermore, no detectable levels of tin compound derivates were measured in N. depressus. 

Flatback turtles; Natator depressus; Trace element; Nesting turtles; Environmental contamination