Diaphus hudsoni Zubbrigg & Scott, 1976
(Myctophidae, Myctophiformes)
The collection contains otoliths from 176 individuals of this species, ranging from 64 to 94 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 20 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Diaphus hudsoni, with total length of A. 94mm; internal side A1; external side A2; profile of the ventral region A3; click the figures for larger version*
Morphology:
Shape: discoidal (80%), discoidal to elliptic (15%), elliptic (5%). Anterior region: peaked (80%), double-peaked (15%), angled (5%). Posterior region: rounded. Dorsal edge: sinuate to entire (85%), entire (15%). Ventral edge: serrate to sinuate (75%), serrate (25%). Profile: flattened. Rostrum and antirostrum orientation: in agreement (95%), not applicable (5%). Rostrum: Developed. Antirostrum: Developed (50%), underdeveloped (45%), absent (5%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal (80%), descending (20%), opening ostial, morphology heterosulcoid, colliculum heteromorphic, ostium tubular (95%), funnel-like (5%), cauda round-oval (70%), elliptic (30%).
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 6.40 ± 1.47 | 4.43 | 8.70 |
OH / OL % | 83.18 ± 3.3 | 76.82 | 88.86 |
OT / OL % | 17.43 ± 2.66 | 13.02 | 25.65 |
OT / OH % | 20.98 ± 3.18 | 15.61 | 30.17 |
Circularity | 15.73 ± 3.26 | 2.08 | 17.51 |
Rectangularity | 0.68 ± 0.02 | 0.65 | 0.75 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 10.2.DIHU.REF.AM.6022.8 (94 mm)
For more information about this species: