Atherinella brasiliensis (Quoy & Gaimard, 1825)
(Atherinopsidae, Atheriniformes)
The collection contains otoliths from 541 individuals of this species, ranging from 17 to 151 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 55 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Atherinella brasiliensis, with total length of A. 32mm; B. 86mm; C. 141mm; 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. Anterior region: peaked (45%), peaked-round (25%), notched (13%), angled-round (13%). Posterior region: rounded (76%), angled (16%), angled-round (7%). Dorsal edge: lobed (47%), sinuate (24%), entire (18%), lobed to sinuate (11%). Ventral edge: lobed (44%), sinuate (38%), lobed to entire (16%), entire (2%). Profile: concave-convex. Rostrum and antirostrum orientation: in agreement (85%), not applicable (15%). Rostrum: Developed (78%), underdeveloped (22%). Antirostrum: underdeveloped (60%), Developed (25%), absent (15%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position supramedian (73%), median (27%), orientation ascending (76%), horizontal (24%), opening ostial, morphology heterosulcoid, colliculum heteromorphic, ostium elliptic (62%), funnel-like (38%), cauda sinuous tubular.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.99 ± 0.27 | 2.64 | 4.21 |
OH / OL % | 60.52 ± 2.85 | 53.52 | 68.54 |
OT / OL % | 19.41 ± 2.28 | 16.38 | 29.21 |
OT / OH % | 32.06 ± 3.18 | 25.82 | 43.55 |
Circularity | 16.76 ± 1.41 | 14.82 | 20.72 |
Rectangularity | 0.73 ± 0.02 | 0.69 | 0.77 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 18.1.ATBR.BAV.PC.6/1.44 (32 mm)
- 18.1.ATBR.BAIV.PC.5/1.61 (86 mm)
- 18.1.ATBR.BAV.PC.4/1.3 (141 mm)
For more information about this species: