Gadella imberbis (Vaillant, 1888)

(Moridae, Gadiformes)

No Atlântico Ocidental sua ocorrência é registrada desde Cape Cod até o Rio Grande do Sul, no Brasil. É uma espécie bentopelágica que vive na região superior do talude continental entre 200 e 800 m de profundidade (Bernardes et al. 2005). De acordo com a literatura, atinge 310 mm de comprimento.

The collection contains otoliths from 17 individuals of this species, ranging from 174 to 370 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 14 analysed otoliths. See more detailed data here (in portuguese).

Otoliths from Gadella imberbis, with total length of A. 203mm; B. 246mm; C. 293mm; 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: sagitiform. Anterior region: peaked. Posterior region: lanceolated-round. Anterior dorsal edge: entire (71%), sinuate to entire (29%). Posterior dorsal edge: sinuate to entire (79%), entire (21%). Ventral edge: entire. Profile: plane-convex. Rostrum and antirostrum orientation: in agreement. Rostrum: absent. Antirostrum: absent. Pseudorostrum: Developed. Pseudoantirostrum: Developed. Sulcus acusticus: position inframedian, orientation horizontal, opening caudal, morphology heterosulcoid, colliculum absent, ostium elliptic, cauda elliptic.
Description of the terms used

Morphometry:

Shape indices	Mean ± sd	Minimum	Maximum
OL / TL %	2.75 ± 0.4	1.74	3.52
OH / OL %	27.47 ± 3.01	24.00	34.11
OT / OL %	37.10 ± 1.36	34.96	40.65
OT / OH %	136.26 ± 13.16	113.70	154.19
Circularity	32.53 ± 2.5	28.93	37.18
Rectangularity	0.56 ± 0.04	0.49	0.64

Description of the abbreviations used

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

14.2.GAIM.REV.AF.612.1 (203 mm)
14.2.GAIM.REV.AF.613.3 (246 mm)
14.2.GAIM.REV.AF.1015.1 (293 mm)

For more information about this species: