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Table 5

Chemical composition of trunk spines of Profilicollis altmani cystacanths from Emerita analoga in Peru.

Element* Single anterior spine Several spines in anterior Single middle spine Posterior-most spine
Phosphorous (P) 3.93 2.61 5 1.15–1.34
Sulfur (S) 3.21 2.7 2.56 3.28–3.94
Calcium (Ca) 6.34 4.07 7.81 2.19–2.26

Palladium (Pd) and gold (Au) were used to count the specimens and gallium for the cross cut of the spines. These and other elements (C, O, N) common in organic matter are omitted. Data are reported in weight (WT%).

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