Engraulis anchoita Hubbs & Marini 1935
(Engraulidae, Clupeiformes)
The collection contains otoliths from 3444 individuals of this species, ranging from 38 to 165 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 61 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Engraulis anchoita, with total length of A. 41mm; B. 102mm; C. 165mm; 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: elliptic (70%), fusiform (23%), discoidal to elliptic (3%), discoidal (3%). Anterior region: peaked (92%), angled-round (5%), peaked-round (3%). Posterior region: angled-round (41%), rounded (31%), peaked (13%), peaked-round (11%). Dorsal edge: entire (49%), sinuate to entire (46%), sinuate (5%). Ventral edge: entire to serrate (69%), sinuate to serrate (21%), sinuate to entire (8%), lobed to entire (2%). Profile: concave-convex (67%), plane-convex (26%), flattened (7%). Rostrum and antirostrum orientation: in agreement (87%), not applicable (13%). Rostrum: Developed. Antirostrum: Developed (61%), underdeveloped (26%), absent (13%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation horizontal, opening ostial, morphology heterosulcoid, colliculum heteromorphic, ostium funnel-like (77%), elliptic (23%), cauda elliptic.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.74 ± 0.48 | 1.65 | 4.56 |
OH / OL % | 55.67 ± 7.39 | 45.80 | 84.51 |
OT / OL % | 18.42 ± 2.79 | 13.49 | 29.58 |
OT / OH % | 33.10 ± 2.58 | 29.14 | 40.54 |
Circularity | 18.11 ± 1.33 | 14.42 | 22.43 |
Rectangularity | 0.68 ± 0.02 | 0.64 | 0.74 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 5.1.ENAN.SARV.AM.11.24 (41 mm)
- 5.1.ENAN.SARV.AM.16.21 (102 mm)
- 5.1.ENAN.REVP.AM.190.25 (165 mm)
For more information about this species: