Table 1.

Morphometric summary data for all shark species

Family:CarcharhinidaeCarcharhinidaeSphyrnidaeSphyrnidaeSphyrnidae
Species:Negaprion brevirostrisCarcharhinus acronotusSphyrna tiburoSphyrna lewiniEusphyra blochii
N66766
HabitatCoastal, inshore, tropicalCoastal, tropicalCoastal, inshoreCoastal, pelagicBenthopelagic, brackish
Eye positionLateralLateralLateralAnterior lateralAnterior lateral
Pupil shapeRoundRoundHorizontalSlight horizontal-
Total length (cm)73.7±1.9104.5±1.181.6±1.956.1±1.1108±2.5
Inter-ocular distance (cm)8.6±0.211.1±0.212.6±0.214.8±0.344.6±1.2
Horizontal plane
Monocular (deg.)159.0±0.5171.7±1.4175.9±1.1181.7±1.8-
Binocular - physiological (deg.)10.0±1.510.7±1.313.4±0.731.7±3.748.3±2.7
Binocular - morphological (deg.)11.8±0.713.6±0.816.4±0.534.4±2.648.3±2.7
Cyclopean (deg.)308±0.7332.7±1.8338.3±2.1331.7±1.7-
Anterior eye rotation (deg.)9.5±0.310.5±1.811.7±0.89.5±1.5-
Posterior eye rotation (deg.)9.3±0.915.2±1.914.7±0.99.8±1.0-
Vertical plane
Monocular (deg.)184.8±0.4192.0±0.7189.1±0.7187.0±1.7-
Binocular (deg.)4.3±0.69.3±0.79.1±1.67.0±1.9-
Cyclopean (deg.)360±0.0360±0.0360±0.0360±0.0-
  • Values represent means ± s.e.m.