Growth model of the reared sea urchin Paracentrotus ... - SciViews

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absorbent paper for 5 min to eliminate most of the coelomic fluid); fresh
and dry weight (drying at 70°C until constant weight) of the digestive tract
with its contents, of the gonads and of the integuments; dry weight of
Aristotle's lantern, spines and test after elimination of most organic part
with 12°Chl bleach under slow agitation.
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Part II: Measurement for size in the sea urchin
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Figure 21. Principal components analysis: orientation in the first 3D-space of the vectors
representing the 14 measurements. Different colors have been chosen to symbolize the 4
groups of measurements: for general body size measurements, for the integuments and
skeleton, for the digestive tract and its content and for the gonads.
Principal component analysis (PCA) indicated that all body size
measurements are well correlated with the first axis (trend corresponding
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