Argentina striata Goode & Bean, 1896
(Argentinidae, Osmeriformes)
The collection contains otoliths from 940 individuals of this species, ranging from 50 to 241 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 74 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Argentina striata, with total length of A. 55mm; B. 137mm; C. 220mm; 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: pentagonal (47%), trapezoidal (31%), elliptic to trapezoidal (22%). Anterior region: peaked (69%), oblique to peaked (31%). Posterior region: flattened (53%), rounded (24%), oblique to peaked (15%), oblique (8%). Anterior dorsal edge: sinuate (53%), entire (41%), lobed to sinuate (3%), lobed (3%). Posterior dorsal edge: (55%), lobed (20%), sinuate (18%), serrate to sinuate (4%). Anterior ventral edge: sinuate (53%), serrate to sinuate (19%), lobed to sinuate (19%), entire (5%). Posterior ventral edge: sinuate (39%), entire (35%), (22%), lobed (4%). Central ventral edge: sinuate (64%), (22%), entire (15%). Profile: plane-convex. Rostrum and antirostrum orientation: not applicable. Rostrum: Developed. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position supramedian, orientation descending, opening ostial, morphology heterosulcoid, colliculum heteromorphic, ostium funnel-like (70%), elliptic (30%), cauda straight tubular.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 3.16 ± 0.19 | 2.65 | 3.52 |
OH / OL % | 69.02 ± 5.59 | 60.00 | 81.96 |
OT / OL % | 15.94 ± 2.1 | 12.16 | 20.76 |
OT / OH % | 23.12 ± 2.58 | 18.73 | 29.74 |
Circularity | 17.11 ± 1.65 | 14.72 | 23.36 |
Rectangularity | 0.67 ± 0.02 | 0.63 | 0.71 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 7.1.ARST.REV.AF.1133.2 (55 mm)
- 7.1.ARST.OGX2.AM.BMS57/3.8 (137 mm)
- 7.1.ARST.REV.AF.610.8 (220 mm)
For more information about this species: