Oligoplites saurus (Bloch & Schneider, 1801)
(Carangidae, Perciformes)
The collection contains otoliths from 70 individuals of this species, ranging from 22 to 144 mm of total length. Click here to see the map of the sampling area for the individuals of this species. The following summaries contains data from 17 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Oligoplites saurus , with total length of A. 32mm; B. 80mm; C. 142mm; internal side A1; B1; C1; external side A2; B2; C2; profile of the ventral region A3; B3; C3; click the figures for larger version*
Morphology:
Shape: semicircular (88%), elliptic to lanceolated (12%). Anterior region: oblique (53%), peaked (24%), lanceolated (12%), peaked-round (6%). Posterior region: rounded (47%), double-peaked (18%), oblique-round (18%), oblique to angled (12%). Dorsal edge: entire (94%), lobed to entire (6%). Ventral edge: entire. Profile: plane-convex (88%), concave-convex (12%). Rostrum and antirostrum orientation: in agreement (71%), not applicable (29%). Rostrum: underdeveloped (88%), Developed (12%). Antirostrum: underdeveloped (71%), absent (29%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal, opening ostial (71%), ostiocaudal (29%), morphology heterosulcoid, colliculum heteromorphic, ostium funnel-like, cauda strongly curved tubular (59%), slightly curved tubular (29%), straight tubular (12%).
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 1.56 ± 0.15 | 1.27 | 1.90 |
OH / OL % | 61.38 ± 5.77 | 51.85 | 73.08 |
OT / OL % | 21.16 ± 2.65 | 14.36 | 25.00 |
OT / OH % | 34.41 ± 2.26 | 27.37 | 36.67 |
Circularity | 16.21 ± 1.3 | 14.02 | 19.45 |
Rectangularity | 0.71 ± 0.03 | 0.65 | 0.76 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 25.13.OLSAU.BAII.PC.1/1.13 (32 mm)
- 25.13.OLSAU.BAIII.PC.5/1.1 (80 mm)
- 25.13.OLSAU.BAIII.RAB.3/1.4 (142 mm)
For more information about this species: