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TABLE 1. Types of shell damages, separated by different Grades, introduced in the paper.

Grade Characters of scars Synonyms
Soft tissue damage

Stretch
(with respect to length)

Depth
(with respect to width)
Predatory Non-Predatory
I visible >50% >30% Embayed, Cleft Creases, Arcuate-angular
II --- 5-50 5-30% Scalloped, Devoted Horseshoe
III --- <5% <5% Scalloped Arcuate-angular

 

TABLE 2. Distribution of damages and their severities are presented here. Note that most the damages are of Grade III and are concentrated on the ventral part of the shell. Stretch = the dimension of the scar (see text).

  Location on shell
Grade 1 2 3 4
    Type A (stretch and depth) Type B (soft tissue damage) Type A (stretch and depth) Type B (soft tissue damage) Type A (stretch and depth) Type B (soft tissue damage)
I 2 12 3 20 5 14 3
II 7 18 32 18
III 25 47 106 45

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