Sardinella brasiliensis (Steindachner, 1879)

(Clupeidae, Clupeiformes)

A sardinha-verdadeira distribui-se no oceano Atlântico ocidental, desde o Golfo do México até a Argentina. Vive em águas costeiras e forma grandes cardumes, alimentando-se de organismos planctônicos. Atingem até 24 cm de comprimento (FROESE e PAULY, 2013; FIGUEIREDO e MENEZES, 1978).

The collection contains otoliths from 242 individuals of this species, ranging from 45 to 264 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 37 analysed otoliths. See more detailed data here (in portuguese).

Otoliths from Sardinella brasiliensis, with total length of A. 93mm; B. 170mm; C. 234mm; 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 to lanceolated. Anterior region: lanceolated. Posterior region: oblique-round (95%), blunt-round (5%). Dorsal edge: sinuate to entire (59%), lobed to sinuate (41%). Ventral edge: lobed to sinuate (51%), dentate to sinuate (16%), dentate to lobed (16%), sinuate to entire (14%). Profile: concave-convex. Rostrum and antirostrum orientation: in agreement (73%), in disagreement (27%). Rostrum: Developed. Antirostrum: Developed. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal (57%), slightly ascending (43%), opening ostial, morphology pseudo-archaesulcoid, colliculum heteromorphic, ostium funnel-like, cauda round-oval (78%), elliptic (22%).
Description of the terms used

Morphometry:

Shape indices	Mean ± sd	Minimum	Maximum
OL / TL %	1.94 ± 0.21	1.61	2.46
OH / OL %	42.27 ± 2.62	36.10	48.37
OT / OL %	14.97 ± 3.05	9.58	20.42
OT / OH %	35.32 ± 6.47	22.67	49.17
Circularity	27.83 ± 2.25	23.49	33.04
Rectangularity	0.69 ± 0.02	0.66	0.73

Description of the abbreviations used

* Vouchers:
Collection identifier for the individuals shown on photography and drawings:

5.3.SABR.SARVII.AM.4.4 (93 mm)
5.3.SABR.SARVI.AM.17.1 (170 mm)
5.3.SABR.SARV.CE.2.3 (234 mm)

For more information about this species: