Xenolepidichthys dalgleishi Gilchrist, 1922
(Grammicolepididae, Zeiformes)
The collection contains otoliths from 658 individuals of this species, ranging from 68 to 260 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 71 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Xenolepidichthys dalgleishi, with total length of A. 68mm; B. 127mm; C. 260mm; 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: hourglass. Anterior region: double-peaked. Posterior region: double-peaked. Dorsal edge: lobed (61%), sinuate (32%), lobed to sinuate (7%). Ventral edge: sinuate (32%), lobed to sinuate (24%), lobed (24%), sinuate to entire (10%). Profile: concave-convex. Rostrum and antirostrum orientation: in agreement. Rostrum: Developed. Antirostrum: Developed. Pseudorostrum: Developed. Pseudoantirostrum: Developed. Sulcus acusticus: position median, orientation horizontal, opening ostiocaudal, morphology homosulcoid, colliculum homomorphic, ostium funnel-like, cauda funnel-like.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 1.78 ± 0.22 | 0.95 | 2.20 |
OH / OL % | 102.58 ± 5.01 | 90.91 | 112.98 |
OT / OL % | 23.33 ± 2.73 | 18.95 | 34.35 |
OT / OH % | 22.74 ± 2.27 | 18.75 | 30.41 |
Circularity | 21.80 ± 2.95 | 1.85 | 27.02 |
Rectangularity | 0.65 ± 0.02 | 0.59 | 0.70 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 22.3.XEDA.REV.AF.1140.31 (68 mm)
- 22.3.XEDA.REV.AF.1017.36 (127 mm)
- 22.3.XEDA.REV.AF.606.24 (260 mm)
For more information about this species: