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Research Article

Table 4

Results of the X-ray microanalysis for elements present in the intact hooks of two species of Neoechinorhynchus, N. personatus from Mugil cephalus in the Mediterranean off Tunisia and N. ponticus from Chelon auratus in the Black Sea.

Large anterior hook
Small posterior hook
WT%* WT%
N. personatus
Phosphorus (P) 10.80 4.84
Sulfur (S) 3.10 6.94
Calcium (Ca) 17.20 7.35
N. ponticus
Phosphorus (P) 8.54 2.69
Sulfur (S) 8.54 12.78
Calcium (Ca) 12.89 3.06

Weight percent (WT%) is based on a total of 100. C, O, N are common elements of the protoplasm. Pd (palladium), Au (gold) and Ga (gallium) are omitted from the chart.

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