Isopysthus parvipinnis (Cuvier, 1830)
(Sciaenidae, Perciformes)
Distribui-se da Costa Rica ao sul do Brasil. Ocorre em águas costeiras pouco profundas (até 50 m), sobre fundos de areia e/ou lama. É comum em aguas estuarinas, alimenta-se de peixes e/ou presas pelágicas. Alcança 25 cm de comprimento (Menezes & Figueiredo, 1980; Soares et al.; 2008).
The collection contains otoliths from 71 individuals of this species, ranging from 83 to 196 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 31 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Isopysthus parvipinnis, with total length of A. 85mm; B. 170mm; internal side A1; B1; external side A2; B2; profile of the ventral region A3; B3; click the figures for larger version*
Morphology:
Shape: pentagonal. Anterior region: rounded (52%), oblique-round (39%), flattened (10%). Posterior region: flattened (84%), oblique-round (13%), rounded (3%). Dorsal edge: sinuate to entire (39%), lobed to entire (39%), entire (10%), sinuate (6%). Ventral edge: entire (97%), sinuate to entire (3%). Profile: plane-convex. Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median (90%), supramedian (10%), orientation horizontal, opening para-ostial (74%), pseudo-ostial (26%), morphology heterosulcoid, colliculum heteromorphic, ostium lateral, cauda strongly curved tubular.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 5.03 ± 0.25 | 4.70 | 6.17 |
OH / OL % | 62.16 ± 3.88 | 54.49 | 70.80 |
OT / OL % | 25.26 ± 1.73 | 22.13 | 28.89 |
OT / OH % | 40.79 ± 3.72 | 33.44 | 47.93 |
Circularity | 15.56 ± 0.45 | 14.36 | 16.34 |
Rectangularity | 0.76 ± 0.01 | 0.74 | 0.79 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 25.22.ISPA.PI.AF.3.33 (85 mm)
- 25.22.ISPA.PI.AF.2.1 (170 mm)
For more information about this species: