Table 3. Percentage of elements detected and Ca/P ratio in small and large dugong tusks.

Ele.	Small	Large	p-value	Ele.	Small	Large	p-value
Al	0.361 ± 0.327	0.203 ± 0.061	1.000	Cu	0.046 ± 0.100	0.004 ± 0.006	0.059
Si	1.611 ± 1.854	0.901 ± 0.941	0.914	Zn	0.043 ± 0.015	0.039 ± 0.012	0.098
P	9.190 ± 1.907	7.642 ± 1.388	0.000	Zr	0.015 ± 0.002	0.013 ± 0.002	0.001
S	0.326 ± 0.419	0.262 ± 0.308	0.882	Ag	0.018 ± 0.004	0.018 ± 0.003	0.811
Ca	25.804 ± 3.688	22.571 ± 2.881	0.000	Cd	0.022 ± 0.007	0.023 ± 0.005	0.526
Ti	0.054 ± 0.054	0.058 ± 0.036	0.063	Sn	0.024 ± 0.008	0.026 ± 0.006	0.307
V	0.018 ± 0.004	0.018 ± 0.004	0.305	Sb	0.031 ± 0.011	0.035 ± 0.007	0.226
Cr	0.010 ± 0.002	0.014 ± 0.022	0.586	W	0.004 ± 0.001	0.004 ± 0.000	0.858
Mn	0.009 ± 0.003	0.013 ± 0.027	0.432	Pb	0.001 ± 0.000	0.001 ± 0.001	0.028
Fe	0.028 ± 0.013	0.045 ± 0.034	0.000	LE	62.785 ± 6.265	68.293 ± 4.209	0.000
Ni	0.002 ± 0.000	0.002 ± 0.001	0.141	Ca/P	2.867 ± 0.341	3.007 ± 0.435	0.015

Bold numbers indicate significantly higher values. Al = aluminum, Si = silicon, P = phosphorus, S = sulfur, Ca = calcium, Ti = titanium, V = vanadium, Cr = chromium, Mn = manganese, Fe = iron, Ni = nickel, Cu = copper, Zn = zinc, Zr = zirconium, Ag = silver, Cd = cadmium, Sn = tin, Sb = antimony, W = tungsten, Pb = lead, LE = light elements.