Chaetodipterus faber (Broussonet, 1782)
(Ephippidae, Perciformes)
The collection contains otoliths from 32 individuals of this species, ranging from 26 to 283 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 20 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Chaetodipterus faber, with total length of A. 26mm; B. 114mm; C. 283mm; 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: elliptic (40%), elliptic to rectangular (35%), rectangular to fusiform (15%), elliptic to discoidal (10%). Anterior region: peaked-round (50%), peaked (35%), angled-round (15%). Posterior region: rounded (75%), oblique (20%), oblique-round (5%). Dorsal edge: sinuate (40%), lobed to sinuate (25%), sinuate to entire (25%), crenate (5%). Ventral edge: sinuate to entire (35%), sinuate (25%), lobed to sinuate (25%), crenate to sinuate (5%). Profile: concave-convex (65%), flattened (20%), plane-convex (15%). Rostrum and antirostrum orientation: in agreement (70%), not applicable (30%). Rostrum: Developed (85%), underdeveloped (15%). Antirostrum: underdeveloped (50%), Developed (30%), absent (20%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal, opening ostial, morphology heterosulcoid, colliculum heteromorphic, ostium funnel-like, cauda slightly curved tubular (85%), round-oval (10%), strongly curved tubular (5%).
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 3.84 ± 0.67 | 2.35 | 5.09 |
OH / OL % | 58.64 ± 10.94 | 44.61 | 87.00 |
OT / OL % | 19.11 ± 4.2 | 13.96 | 26.58 |
OT / OH % | 33.27 ± 8.94 | 25.65 | 54.97 |
Circularity | 19.75 ± 2.33 | 16.54 | 25.28 |
Rectangularity | 0.71 ± 0.03 | 0.67 | 0.75 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 25.51.CHFA.BAV.PC.8/1.7 (26 mm)
- 25.51.CHFA.BAIV.EM.1/1.1 (114 mm)
- 25.51.CHFA.SARIV.AM.19.2 (283 mm)
For more information about this species: