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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Thunnus obesus AquaMaps Data sources: GBIF OBIS |
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Thunnus obesus
Picture by Chow, S.
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Picture by Chow, S.
Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa
> Scombriformes (Mackerels) > Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Thunnus: Greek, thynnos = tunna (Ref. 45335).
More on author: Lowe.
Etymology: Thunnus: Greek, thynnos = tunna (Ref. 45335).
More on author: Lowe.
Environment: milieu / climate zone / depth range / distribution range Ecologia
marino; oceanodromo (Ref. 51243); distribuzione batimetrica 0 - 1500 m (Ref. 117020), usually 0 - 500 m (Ref. 117020). Subtropical; 13°C - 29°C (Ref. 168); 52°N - 48°S, 180°W - 180°E
Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri
Atlantic, Indian and Pacific: in tropical and subtropical waters. Absent in the Mediterranean. Highly migratory species.
Length at first maturity / Size / Peso / Age
Maturity: Lm 112.5, range 100 - 125 cm
Max length : 250 cm TL maschio/sesso non determinato; (Ref. 27000); common length : 180 cm FL maschio/sesso non determinato; (Ref. 168); peso massimo pubblicato: 210.0 kg (Ref. 9987); Età massima riportata: 11 anni (Ref. 30326)
Max length : 250 cm TL maschio/sesso non determinato; (Ref. 27000); common length : 180 cm FL maschio/sesso non determinato; (Ref. 168); peso massimo pubblicato: 210.0 kg (Ref. 9987); Età massima riportata: 11 anni (Ref. 30326)
Short description Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 13 - 14; Raggi dorsali molli (totale) : 14 - 15; Spine anali: 0; Raggi anali molli: 14; Vertebre: 39. This large species is distinguished by the following characters: robust, fusiform body, slightly compressed from side to side; total gill rakers on first gill arch 23-31; dorsal fins separated only by a narrow interspace, the second followed by 8-10 finlets; anal fin followed by 7-10 finlets; pectoral fins moderately long (22 to 31% of fork length) in large specimens (over 110 cm FL), but very long (as long as in Thunnus alalunga) in smaller specimens; 2 flaps (interpelvic process) between pelvic fins; very small scales on body; corselet of larger and thicker scales developed, but not very distinct; caudal peduncle very slender, with a strong lateral keel between 2 smaller keels; ventral surface of liver striated; swimbladder present. Colour of back metallic dark blue, lower sides and belly whitish; a lateral iridescent blue band runs along sides in live specimens; first dorsal fin deep yellow, second dorsal and anal fins light yellow, finlets bright yellow edged with black (Ref. 9684).
Occur in areas where water temperatures range from 13°-29°C, but the optimum is between 17° and 22°C. Variation in occurrence is closely related to seasonal and climatic changes in surface temperature and thermocline. Juveniles and small adults school at the surface in mono-species groups or mixed with other tunas, may be associated with floating objects. Adults stay in deeper waters (Ref. 5377). Eggs and larvae are pelagic (Ref. 6390). Feed on a wide variety of fishes, cephalopods and crustaceans during the day and at night (Ref. 9340). Meat is highly prized and processed into sashimi in Japan. Marketed mainly canned or frozen (Ref. 9684), but also sold fresh (Ref. 9340).
Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Are multiple spawners that may spawn every 1 or 2 days over several months (Ref. 30330). They spawn over periods of the full moon (Ref. 6390). Spawn throughout the year in tropical waters (Ref. 6390).
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: Version 2024-2)
Vulnerabile, vedi Lista Rossa IUCN (VU) (A2bd); Date assessed: 15 January 2021
CITES
Not Evaluated
Threat to humans
Harmless
Human uses
Pesca: elevato interesse commerciale; Pesce da pesca sportiva: si
FAO - pesca: landings, species profile; Publication: search | FIRMS - Stock assessments | FishSource | Sea Around Us
Informazioni ulteriori
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamento
Abbondanza
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamento
Abbondanza
Life cycle
Riproduzione
Maturità
Maturity/Gills rel.
Fecundity
Deposizione
Spawning aggregations
Uova
Egg development
Larve
Dinamica popolazioni larvali
Riproduzione
Maturità
Maturity/Gills rel.
Fecundity
Deposizione
Spawning aggregations
Uova
Egg development
Larve
Dinamica popolazioni larvali
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Human related
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.
Strumenti
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Fonti Internet
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Genere, Specie | DiscoverLife | ECOTOX | FAO - pesca: landings, species profile; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Database Nazionali | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, ricerca | World Records Freshwater Fishing | Zoological Record
Estimates based on models
Preferred temperature (Ref. 123201): 16.8 - 28.6, mean 26.6 °C (based on 3638 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.01043 - 0.01666), b=3.03 (2.99 - 3.07), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278): 4.5 ±0.0 se; based on diet studies.
Generation time: 6.6 (4.4 - 10.4) years. Estimated as median ln(3)/K based on 12 growth studies.
Resilienza (Ref. 120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.11-0.23; tm=3; tmax=11; Fec=2 million).
Prior r = 0.52, 95% CL = 0.34 - 0.77, Based on 10 full stock assessments.
Fishing Vulnerability (Ref. 59153): High vulnerability (56 of 100).
Climate Vulnerability (Ref. 125649): Moderate to high vulnerability (47 of 100).
Nutrients (Ref. 124155): Calcium = 22.1 [12.0, 42.2] mg/100g; Iron = 2.65 [1.06, 6.93] mg/100g; Protein = 24 [23, 25] %; Omega3 = 0.453 [0.273, 0.754] g/100g; Selenium = 54.7 [17.4, 171.5] μg/100g; VitaminA = 19.6 [2.7, 180.1] μg/100g; Zinc = 0.278 [0.153, 0.561] mg/100g (wet weight);