Syacium papillosum (Linnaeus, 1758)
(Paralichthyidae, Pleuronectiformes)
The collection contains otoliths from 71 individuals of this species, ranging from 60 to 275 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 85 analysed otoliths. See more detailed data here (in portuguese).
Right otolith
Otoliths from Syacium papillosum, with total length of A. 60mm; B. 162mm; C. 275mm; 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: bullet-shaped. Anterior region: oblique-round. Posterior region: flattened (60%), blunt (26%), oblique (12%), rounded (2%). Dorsal edge: entire (74%), sinuate (9%), sinuate to entire (7%), lobed to sinuate (7%). Ventral edge: lobed to sinuate (74%), sinuate to entire (14%), dentate to lobed (12%). Posterior edge: lobed to sinuate (65%), entire (35%). Profile: concave-convex. Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation ascending, opening mesial, morphology heterosulcoid, colliculum heteromorphic, ostium elliptic, cauda straight tubular (98%), round-oval (2%).
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.94 ± 0.26 | 2.54 | 4.10 |
OH / OL % | 76.36 ± 3.84 | 66.62 | 83.64 |
OT / OL % | 22.24 ± 2.48 | 16.51 | 27.33 |
OT / OH % | 29.10 ± 2.71 | 23.13 | 33.33 |
Circularity | 15.60 ± 1.19 | 13.85 | 19.16 |
Rectangularity | 0.79 ± 0.02 | 0.75 | 0.83 |
Morphology:
Shape: bullet-shaped. Anterior region: oblique-round. Posterior region: flattened (71%), blunt (29%). Dorsal edge: entire (45%), lobed to sinuate (24%), lobed (21%), sinuate (10%). Ventral edge: lobed to sinuate (64%), entire (19%), sinuate (14%), sinuate to entire (2%). Posterior edge: lobed to sinuate (76%), entire (24%). Profile: concave-convex. Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation ascending, opening mesial, morphology heterosulcoid, colliculum heteromorphic, ostium elliptic, cauda straight tubular (98%), round-oval (2%).
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.95 ± 0.27 | 2.57 | 4.15 |
OH / OL % | 79.50 ± 4.97 | 67.27 | 89.36 |
OT / OL % | 21.06 ± 3.02 | 14.85 | 28.64 |
OT / OH % | 26.47 ± 3.25 | 20.85 | 35.63 |
Circularity | 15.45 ± 1.27 | 13.78 | 19.64 |
Rectangularity | 0.75 ± 0.04 | 0.68 | 0.82 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 26.2.SYPA.BAIII.AF.7/1.2 (60 mm)
- 26.2.SYPA.PI.AF.9.8 (162 mm)
- 26.2.SYPA.PI.AF.9.1 (275 mm)
For more information about this species: