Seasonal variation of biochemical composition of Noah's ark shells (Arca noae L. 1758) in a Tunisian coastal lagoon in relation to its reproductive cycle and environmental conditions

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Fig. 7

Results of principal component analysis (PCA) represented by two factors (F1 = 34.22% and F2 = 20.18%) and produced by biochemical variables and environmental parameters: A. Projection of the variables on the factor-plane (1 × 2); B. Projection of the cases on the factor-plane (1 × 2).

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