Katsuwonus pelamis (Linnaeus, 1758)
(Scombridae, Perciformes)
The collection contains otoliths from 8 individuals of this species, ranging from 333 to 630 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 2 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Katsuwonus pelamis, with total length of A. 375mm; B. 473mm; internal side A1; B1; external side A2; B2; profile of the ventral region A3; B3; click the figures for larger version*
Morphology:
Shape: rectangular to lanceolated. Anterior region: lanceolated-round. Posterior region: double-peaked-round. Dorsal edge: sinuate to entire. Ventral edge: dentate to lobed. Profile: concave-convex. Rostrum and antirostrum orientation: in agreement. Rostrum: Developed. Antirostrum: Developed (50%), underdeveloped (50%). Pseudorostrum: Developed. Pseudoantirostrum: Developed (50%), underdeveloped (50%). Sulcus acusticus: position median, orientation horizontal, opening ostiocaudal, morphology heterosulcoid, colliculum heteromorphic, ostium funnel-like, cauda slightly curved tubular.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 1.04 ± 0.02 | 1.02 | 1.05 |
OH / OL % | 45.02 ± 1.8 | 43.75 | 46.29 |
OT / OL % | 19.40 ± 0.91 | 18.75 | 20.04 |
OT / OH % | 43.07 ± 0.31 | 42.86 | 43.29 |
Circularity | 38.26 ± 5.34 | 34.49 | 42.04 |
Rectangularity | 0.63 ± 0.03 | 0.61 | 0.65 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 25.57.KAPE.SARVII.CE.13.4 (375 mm)
- 25.57.KAPE.SARVII.CE.13.7 (473 mm)
For more information about this species: