Ctenosciaena gracilicirrhus (Metzelaar, 1919)
(Sciaenidae, Perciformes)
Ocorre desde a América Central até o sul do Brasil em águas costeiras da plataforma continental, geralmente sobre fundos de areia ou areia e lama. Atinge 20 cm de comprimento (Menezes & Figueiredo, 1980). Alimenta-se de peixes e invertebrados bentônicos (camarões) (Soares et al., 2008).
The collection contains otoliths from 551 individuals of this species, ranging from 42 to 183 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 63 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Ctenosciaena gracilicirrhus, with total length of A. 69mm; B. 124mm; C. 183mm; 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: discoidal. Anterior region: rounded. Posterior region: rounded. Dorsal edge: entire (83%), sinuate to entire (16%), lobed to sinuate (2%). Ventral edge: entire (78%), sinuate to entire (19%), lobed to sinuate (3%). Profile: biconvex. Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position supramedian, orientation horizontal, opening pseudo-ostial (94%), para-ostial (6%), morphology heterosulcoid, colliculum heteromorphic, ostium lateral, cauda bent tubular.
Description of the terms used
Morphometry:
| Shape indices | Mean ± sd | Minimum | Maximum |
|---|---|---|---|
| OL / TL % | 4.75 ± 0.32 | 4.30 | 5.94 |
| OH / OL % | 80.56 ± 5.64 | 67.31 | 89.92 |
| OT / OL % | 35.66 ± 2.06 | 31.07 | 40.98 |
| OT / OH % | 44.56 ± 4.96 | 35.83 | 57.14 |
| Circularity | 13.40 ± 0.69 | 11.04 | 17.93 |
| Rectangularity | 0.77 ± 0.01 | 0.75 | 0.79 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 25.22.CTGR.PI.AF.9.1 (69 mm)
- 25.22.CTGR.SARIV.AM.18.7 (124 mm)
- 25.22.CTGR.SARVII.AM.4.9 (183 mm)
For more information about this species: