Zenion hololepis (Goode & Bean, 1896)
(Macrurocyttidae, Zeiformes)
The collection contains otoliths from 214 individuals of this species, ranging from 56 to 173 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 27 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Zenion hololepis, with total length of A. 56mm; B. 114mm; C. 173mm; 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: bullet-shaped (48%), elliptic (37%), discoidal (11%), rectangular (4%). Anterior region: rounded (59%), angled-round (37%), oblique (4%). Posterior region: flattened (59%), rounded (37%), oblique (4%). Dorsal edge: lobed to sinuate (37%), lobed (37%), sinuate to entire (15%), dentate to sinuate (7%). Ventral edge: entire (96%), lobed (4%). Profile: plane-convex. Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation ascending (70%), horizontal (30%), opening mesial, morphology pseudo-archaesulcoid, colliculum homomorphic, ostium round-oval, cauda round-oval.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 3.59 ± 0.66 | 2.29 | 4.95 |
OH / OL % | 85.62 ± 8.53 | 71.84 | 101.01 |
OT / OL % | 20.68 ± 1.57 | 17.97 | 23.46 |
OT / OH % | 24.27 ± 1.85 | 21.50 | 29.78 |
Circularity | 19.64 ± 3.57 | 15.28 | 28.40 |
Rectangularity | 0.72 ± 0.05 | 0.62 | 0.79 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 22.1.ZEHO.REV.AF.605.2 (56 mm)
- 22.1.ZEHO.REV.AF.413.118 (114 mm)
- 22.1.ZEHO.REV.AF.1140.2 (173 mm)
For more information about this species: