Samoa country information

Common names: Sa'ula-oso
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 43.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ws.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/samoa/samoa.htm
Occurrences: Occurrences Point map
Main Ref: Wass, R.C., 1984
National Database:

Common names from other countries

Makaire noir, Aguja negra, Short nosed sword fish, ... more

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Carangiformes (Jacks) > Istiophoridae (Billfishes)
Etymology: More on author: Cuvier.

Environment: milieu / climate zone / depth range / distribution range Écologie

marin; océanodrome (Ref. 51243); profondeur 0 - 915 m (Ref. 43), usually 0 - 200 m (Ref. 43). Subtropical; 15°C - 30°C (Ref. 43); 44°N - 47°S, 18°E - 69°W (Ref. 43)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Indo-Pacific: tropical and subtropical waters, occasionally entering temperate waters. Stray individuals migrate into the Atlantic Ocean by way of the Cape of Good Hope, but the existence of Atlantic breeding stocks is unlikely. Highly migratory species.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 465 cm FL mâle / non sexé; (Ref. 40637); common length : 380 cm TL mâle / non sexé; (Ref. 30573); poids max. publié: 750.0 kg (Ref. 5503)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 0; Rayons mous dorsaux (Total) : 39 - 50; Épines anales: 0; Rayons mous anaux: 16 - 21. Body elongate and not very compressed; upper jaw produced into a robust but not very long beak; two dorsal fins, the height of the first less then the greatest body depth, becoming shorter posteriorly; pectoral fins falcate and rigid, with 19 to 20 rays; body densely covered with small, embedded scales with 1 or 2 sharp points; back dark blue; belly silvery white; membrane of first dorsal fin blue black, without spots; flanks without spots (Ref. 55763). Dark blue above, silvery white below; sometimes with light blue vertical stripes; 1st dorsal fin blackish to dark blue, other fins dark brown with tinges of dark blue in some specimens.

Oceanic, usually found in surface waters above the thermocline, often near shore close to land masses, islands and coral reefs. Feed on fishes, squids, cuttlefishes, octopods, large decapod crustaceans and mostly on small tunas when abundant (Ref. 9668). The flesh is of good quality; marketed refrigerated or frozen and prepared as sashimi in Japan (Ref. 9308). Also Ref. 9692.

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Believed to prefer water temperatures around 27° to 28°C during spawning. Egg counts of ripe roe totaled about 40 million per female.

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Nakamura, I., 1985. FAO species catalogue. Vol. 5. Billfishes of the world. An annotated and illustrated catalogue of marlins, sailfishes, spearfishes and swordfishes known to date. FAO Fish. Synop. 125(5):65p. Rome: FAO. (Ref. 43)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Données manquantes (DD) ; Date assessed: 01 May 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

Pêcheries: commercial; pêche sportive: oui

FAO(pêcheries: production; publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 16 - 28.4, mean 25.4 (based on 3272 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0005 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00447 (0.00209 - 0.00953), b=3.13 (2.93 - 3.33), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Niveau trophique (Ref. 69278): 4.5 ±0.4 se; based on diet studies.

Résilience (Ref. 120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (K=0.47(?); Fec=67 million; assuming tm>2).

Prior r = 0.28, 95% CL = 0.19 - 0.42, Based on 2 full stock assessments.

Fishing Vulnerability (Ref. 59153): Very high vulnerability (78 of 100).

Climate Vulnerability (Ref. 125649): Very high vulnerability (76 of 100).

Catégorie de prix (Ref. 80766): Very high.

Istiompax indica (Cuvier, 1832)