Hoplostethus occidentalis Woods, 1973
(Trachichthyidae, Beryciformes)
The collection contains otoliths from 318 individuals of this species, ranging from 93 to 245 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 57 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Hoplostethus occidentalis, with total length of A. 93mm; B. 169mm; C. 245mm; 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: trapezoidal to irregular. Anterior region: oblique (86%), oblique to peaked (11%), flattened (4%). Posterior region: oblique to angled (82%), oblique to peaked (7%), oblique (7%), flattened to irregular (2%). Dorsal edge: lobed (42%), sinuate (33%), lobed to sinuate (19%), dentate to lobed (5%). Anterior ventral edge: sinuate (47%), entire (47%), lobed (5%). Posterior ventral edge: entire (58%), sinuate (37%), lobed (5%). Central ventral edge: sinuate (81%), entire (19%). Profile: plane-convex. Rostrum and antirostrum orientation: in agreement. Rostrum: Developed. Antirostrum: underdeveloped (72%), Developed (28%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal, opening ostial, morphology heterosulcoid, colliculum heteromorphic, ostium discoidal, cauda elliptic.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 6.23 ± 0.27 | 5.60 | 6.91 |
OH / OL % | 73.66 ± 3.47 | 66.58 | 81.35 |
OT / OL % | 16.92 ± 1.63 | 13.91 | 20.59 |
OT / OH % | 23.03 ± 2.51 | 17.57 | 27.61 |
Circularity | 20.95 ± 1.7 | 18.27 | 25.86 |
Rectangularity | 0.63 ± 0.03 | 0.55 | 0.69 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 21.2.HOOC.REV.AF.1002.2 (93 mm)
- 21.2.HOOC.REV.AF.1255.27 (169 mm)
- 21.2.HOOC.REV.AF.1126.9 (245 mm)
For more information about this species: