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Grammatorcynus bilineatus (Rüppell, 1836)

Double-lined mackerel
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Native range | All suitable habitat | Point map | Year 2050
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Grammatorcynus bilineatus   AquaMaps   Data sources: GBIF OBIS
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Image of Grammatorcynus bilineatus (Double-lined mackerel)
Grammatorcynus bilineatus
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Papua New Guinea country information

Common names: Bwalenak, Double-lined mackerel, Maimua
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: subsistence fisheries | Ref: Hermes, R., 1993
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Only recorded from the Gulf of Papua and southern New Guinea (Ref. 6771); Kimbe bay (Ref. 28888).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/pp.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/PNG/png.htm
Occurrences: Occurrences Point map
Main Ref: Kailola, P.J., 1991
National Database:

Common names from other countries

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Scombriformes (Mackerels) > Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Grammatorcynus: Greek, gramma = signal, mark + Greek, rhyngchos = snout.
  More on author: Rüppell.

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

marino associati a barriera corallina; oceanodromo (Ref. 51243); distribuzione batimetrica 15 - 50 m (Ref. 86942).   Subtropical; 31°N - 25°S, 32°E - 175°W (Ref. 168)

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Indian Ocean: Red Sea eastward to the Andaman Sea. Western Pacific: Ryukyu Islands to the northern coasts of Australia, including the Marshall Islands and Fiji. Often confused in the literature with Grammatorcynus bicarinatus.

Length at first maturity / Size / Peso / Age

Maturity: Lm 41.5, range 40 - 43 cm
Max length : 100.0 cm FL maschio/sesso non determinato; (Ref. 9684); common length : 50.0 cm TL maschio/sesso non determinato; (Ref. 5450); peso massimo pubblicato: 3.5 kg (Ref. 168)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 11 - 13; Raggi dorsali molli (totale) : 10 - 14; Spine anali: 0; Raggi anali molli: 10 - 14. Mouth relatively small, upper jaw reaching about to middle of eye. Pectoral fins stout. Interpelvic process short and single. No prominent anterior corselet present. Swim bladder present. Vertebrae 14 precaudal plus 17 caudal, total 31 as in mackerel (Scomber and Rastrelliger).

Biologia     Glossario (es. epibenthic)

Inhabits open water but often seen swimming near outer reef walls or deep clear-water slopes (Ref. 48637). Found mostly in shallow reef waters where it forms large schools. Feeds on crustaceans and fishes, particularly clupeoids (Sardinella, Thrissocles), and other fishes such as Sphyraena and Balistes. Marketed canned and frozen (Ref. 9684). Its flesh is mild and pleasantly flavored, but brushed with lemon juice prior to cooking to remove the ammonia-like smell (Ref. 9684).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore : Collette, Bruce B. | Collaboratori

Collette, B.B. and C.E. Nauen, 1983. FAO Species Catalogue. Vol. 2. Scombrids of the world. An annotated and illustrated catalogue of tunas, mackerels, bonitos and related species known to date. Rome: FAO. FAO Fish. Synop. 125(2):137 p. (Ref. 168)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 01 March 2022

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Pesca: scarso interesse commerciale; Pesce da pesca sportiva: si
FAO(Publication : search) | FishSource | Sea Around Us

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori
Ecology
Ecologia
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Riproduzione
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larve
Dinamica popolazioni larvali
Distribution
Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
BRUVS - Videos
Anatomy
Gill areas
Cervelli
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Suoni dei Pesci
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetica
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaboratori
References
Bibliografia

Strumenti

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Estimates based on models

Preferred temperature (Ref. 115969): 25.6 - 29.1, mean 28.2 (based on 632 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00464 - 0.01966), b=3.05 (2.88 - 3.22), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.2   ±0.69 se; based on food items.
Resilienza (Ref. 120179):  Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (67 of 100).
Climate Vulnerability (Ref. 125649):  Very high vulnerability (89 of 100).
Price category (Ref. 80766):   Very high.