Table 5 Asterisci morphometric mean values, with standard deviation (s.d.), maximum (Max.), and minimum (Min.) values, for each investigated size class: maximum otolith length (OL, mm) and otolith width (OW, mm), otolith perimeter (OP, mm), otolith surface (OS mm2), otolith length to the total fish length ratio (OL/TL), circularity (C = OP2/OS), rectangularity (Re = OS/[OL × OW]), ellipticity (E = OL–OW/OL + OW), aspect ratio (AR = OW/OL%), form factor (FF = 4πOS/OP2) and roundness (Ro = 4OS/πOL2)
From: Intra-population variability of the saccular, utricular and lagenar otoliths of the garfish Belone belone (Linnaeus, 1760) from South-Western Ionian Sea (Central Mediterranean Sea)
 | R | L |
---|
Mean | s.d | Min.—Max | Mean | s.d | Min.—Max |
---|
OL | 0.44 | 0.07 | 0.3—0.57 | 0.45 | 0.07 | 0.32—0.56 |
OW | 0.74 | 0.09 | 0.58—0.9 | 0.71 | 0.08 | 0.54—0.85 |
OP | 2.18 | 0.25 | 1.64—2.71 | 2.31 | 0.37 | 1.62—2.95 |
OS | 0.24 | 0.06 | 0.13—0.38 | 0.24 | 0.06 | 0.14—0.35 |
OL/TL % | 0.16 | 0.03 | 0.12—0.22 | 0.16 | 0.02 | 0.13—0.21 |
C | 20.07 | 1.09 | 18.54—22.63 | 22.15 | 1.76 | 18.42—24.58 |
Re | 0.73 | 0.03 | 0.69—0.77 | 0.75 | 0.02 | 0.71—0.78 |
E (-) | 0.25 | 0.06 | 0.15—0.36 | 0.22 | 0.05 | 0.17—0.36 |
AR | 1.69 | 0.22 | 1.38—2.13 | 1.59 | 0.17 | 1.4—2.1 |
FF | 0.63 | 0.03 | 0.55—0.68 | 0.57 | 0.05 | 0.51—0.68 |
Ro | 1.57 | 0.21 | 1.24—1.93 | 1.51 | 0.17 | 1.3—2.01 |