Hyporhamphus unifasciatus (Ranzani, 1841)

(Hemiramphidae, Beloniformes)

The collection contains otoliths from 51 individuals of this species, ranging from 116 to 282 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 33 analysed otoliths. See more detailed data here (in portuguese).

Otoliths from Hyporhamphus unifasciatus, with total length of A. 116mm; B. 190mm; C. 261mm; 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: discoidal to elliptic (52%), elliptic (48%). Anterior region: peaked-round. Posterior region: oblique to angled (73%), oblique-round (15%), rounded (6%), oblique (6%). Dorsal edge: lobed to sinuate (70%), crenate to entire (15%), sinuate to entire (12%), lobed (3%). Ventral edge: lobed to sinuate (42%), sinuate to entire (27%), lobed (27%), crenate to entire (3%). Profile: concave-convex. Rostrum and antirostrum orientation: not applicable (64%), in agreement (36%). Rostrum: Developed. Antirostrum: absent (64%), underdeveloped (36%). Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation ascending, opening para-ostial (64%), pseudo-ostial (36%), morphology heterosulcoid, colliculum heteromorphic, ostium elliptic, cauda slightly curved tubular (85%), strongly curved tubular (15%).
Description of the terms used

Morphometry:

Shape indices	Mean ± sd	Minimum	Maximum
OL / TL %	2.28 ± 0.17	2.05	2.93
OH / OL %	67.86 ± 3.76	59.02	74.86
OT / OL %	16.22 ± 0.98	14.47	18.40
OT / OH %	23.95 ± 1.59	20.66	28.42
Circularity	17.45 ± 1.24	15.16	22.51
Rectangularity	0.71 ± 0.02	0.67	0.75

Description of the abbreviations used

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

19.4.HYUN.BAIV.PC.8/1.13 (116 mm)
19.4.HYUN.BAIV.PC.9/1.9 (190 mm)
19.4.HYUN.BAIV.AF.2/1.1 (261 mm)

For more information about this species: