Scomber japonicus Houttuyn, 1782

(Scombridae, Perciformes)

Habita águas quentes, ocorrendo em todos os mares. No Atlântico ocidental distribui-se desde a Nova Escócia a Argentina. Alcança 70 cm de comprimento, Apresenta hábitos costeiros, mas pode ser encontrada até em 300 m de profundidade. Alimenta-se de crustáceos, peixes e lulas. (Menezes & Figueiredo, 1980; Figueiredo et al, 2002; Bernardes et al., 2005).

The collection contains otoliths from 200 individuals of this species, ranging from 72 to 299 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 47 analysed otoliths. See more detailed data here (in portuguese).

Otoliths from Scomber japonicus, with total length of A. 85mm; B. 183mm; C. 280mm; 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: rectangular. Anterior region: peaked. Posterior region: oblique (68%), oblique-round (32%). Dorsal edge: sinuate to entire (77%), entire (15%), sinuate (9%). Ventral edge: sinuate to entire (81%), entire (19%). Posterior edge: sinuate to entire (74%), entire (26%). Profile: concave-convex. Rostrum and antirostrum orientation: in agreement. Rostrum: underdeveloped (85%), absent (11%), Developed (4%). Antirostrum: Developed (64%), underdeveloped (28%), absent (9%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal, opening ostial (85%), ostiocaudal (15%), morphology heterosulcoid, colliculum heteromorphic, ostium funnel-like, cauda slightly curved tubular (53%), strongly curved tubular (47%).
Description of the terms used

Morphometry:

Shape indices	Mean ± sd	Minimum	Maximum
OL / TL %	1.81 ± 0.13	1.54	2.09
OH / OL %	40.59 ± 2.33	35.32	45.51
OT / OL %	22.66 ± 3.32	15.56	30.99
OT / OH %	55.93 ± 8.22	39.33	74.85
Circularity	25.43 ± 2.12	21.07	29.47
Rectangularity	0.66 ± 0.04	0.57	0.74

Description of the abbreviations used

* Vouchers:
Collection identifier for the individuals shown on photography and drawings:

25.57.SCJA.SARVI.AM.16.1 (85 mm)
25.57.SCJA.SARIV.AM.8.11 (183 mm)
25.57.SCJA.SARVI.CE.1.12 (280 mm)

For more information about this species: