Cetengraulis edentulus (Cuvier, 1829)
(Engraulidae, Clupeiformes)
The collection contains otoliths from 38 individuals of this species, ranging from 78 to 93 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 11 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Cetengraulis edentulus, with total length of A. 93mm; internal side A1; external side A2; profile of the ventral region A3; click the figures for larger version*
Morphology:
Shape: elliptic. Anterior region: peaked-round (64%), angled-round (36%). Posterior region: angled (55%), angled-round (27%), peaked (9%), rounded (9%). Dorsal edge: sinuate to entire (45%), sinuate (45%), entire (9%). Ventral edge: entire to serrate (64%), sinuate to serrate (36%). Profile: plane-convex (91%), concave-convex (9%). Rostrum and antirostrum orientation: in agreement. Rostrum: Developed. Antirostrum: Developed (91%), underdeveloped (9%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal, opening ostial, morphology heterosulcoid (91%), pseudo-archaesulcoid (9%), colliculum heteromorphic, ostium elliptic, cauda elliptic.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.85 ± 0.25 | 2.46 | 3.35 |
OH / OL % | 67.24 ± 2.55 | 63.49 | 70.54 |
OT / OL % | 20.88 ± 1.77 | 18.01 | 23.36 |
OT / OH % | 31.03 ± 2.14 | 26.86 | 34.97 |
Circularity | 17.04 ± 0.56 | 16.20 | 18.31 |
Rectangularity | 0.68 ± 0.01 | 0.66 | 0.70 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 5.1.CEED.SARVI.AM.9.4 (93 mm)
For more information about this species: