Paralichthys isosceles Jordan, 1891
(Paralichthyidae, Pleuronectiformes)
The collection contains otoliths from 219 individuals of this species, ranging from 197 to 377 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 146 analysed otoliths. See more detailed data here (in portuguese).
Right otolith
Otoliths from Paralichthys isosceles, with total length of A. 197mm; B. 287mm; C. 377mm; 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 (75%), oval (25%). Anterior region: rounded (45%), blunt-round (37%), peaked-round (16%), peaked (1%). Posterior region: rounded. Dorsal edge: sinuate (62%), entire (38%). Ventral edge: entire (74%), sinuate (26%). Profile: biconvex (56%), flattened (23%), plane-convex (21%). Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal (89%), ascending (11%), opening mesial, morphology heterosulcoid, colliculum heteromorphic, ostium tubular, cauda round-oval.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.43 ± 0.16 | 1.94 | 3.19 |
OH / OL % | 71.11 ± 5.64 | 58.98 | 82.79 |
OT / OL % | 22.72 ± 2.15 | 16.93 | 27.44 |
OT / OH % | 32.12 ± 3.72 | 25.74 | 40.68 |
Circularity | 14.52 ± 0.5 | 13.73 | 16.75 |
Rectangularity | 0.74 ± 0.02 | 0.69 | 0.77 |
Morphology:
Shape: oval (38%), elliptic (33%), rectangular to elliptic (29%). Anterior region: blunt-round (53%), peaked-round (34%), rounded (12%). Posterior region: rounded. Dorsal edge: entire (67%), sinuate (33%). Ventral edge: entire (86%), sinuate (14%). Anterior edge: (71%), entire (29%). Posterior edge: (75%), entire (25%). Profile: plane-convex (67%), concave-convex (33%). Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal (60%), ascending (40%), opening mesial (92%), para-ostial (7%), ostial (1%), morphology heterosulcoid, colliculum heteromorphic, ostium elliptic, cauda round-oval.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.34 ± 0.19 | 1.74 | 3.32 |
OH / OL % | 69.76 ± 5.1 | 58.45 | 82.25 |
OT / OL % | 24.30 ± 3.22 | 16.88 | 32.73 |
OT / OH % | 34.96 ± 4.9 | 21.95 | 54.11 |
Circularity | 14.77 ± 1.57 | 6.61 | 17.47 |
Rectangularity | 0.73 ± 0.04 | 0.58 | 0.83 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 26.2.PAIS.PI.AF.4853.4 (197 mm)
- 26.2.PAIS.REV.AF.1008.7 (287 mm)
- 26.2.PAIS.REV.AF.1021.4 (377 mm)
For more information about this species: