Genidens barbus (Lacepède, 1803)
(Ariidae, Siluriformes)
In this species, the otolith that was analysed and photographed is the lapillus, unlike other species.
The collection contains otoliths from 1 individuals of this species, ranging from 504 to 504 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 1 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Genidens barbus, with total length of A. 504mm; internal side A1; external side A2; profile of the ventral region A3; click the figures for larger version*
Morphology:
Shape: oval. Anterior region: oblique to peaked. Posterior region: rounded. Dorsal edge: entire. Ventral edge: entire. Profile: biconvex. Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position not applicable, orientation not applicable, opening not applicable, morphology not applicable, colliculum absent, ostium absent, cauda absent.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.32 ± 0.00 | 2.32 | 2.32 |
OH / OL % | 95.80 ± 0.00 | 95.80 | 95.80 |
OT / OL % | 49.53 ± 0.00 | 49.53 | 49.53 |
OT / OH % | 51.70 ± 0.00 | 51.70 | 51.70 |
Circularity | 14.07 ± 0.00 | 14.07 | 14.07 |
Rectangularity | 0.70 ± 0.00 | 0.70 | 0.70 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 6.1.GEBA.SARV.AM.7.1 (504 mm)
For more information about this species: