Thunnus obesus, Bigeye tuna : fisheries, gamefish

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Thunnus obesus (Lowe, 1839)

Bigeye tuna
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Native range | All suitable habitat | Point map | Year 2050
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Thunnus obesus   AquaMaps   Data sources: GBIF OBIS
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Image of Thunnus obesus (Bigeye tuna)
Thunnus obesus
Foto de Chow, S.

Common names from other countries

Clasificación / Nombres Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Scombriformes (Mackerels) > Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Thunnus: Greek, thynnos = tunna (Ref. 45335).
More on author: Lowe.

Entorno: milieu / zona climática / rango de profundidad / gama de distribución Ecología

marino pelagic-oceanic; oceanodromo (Ref. 71039); rango de profundidad 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

Distribución Territorios | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Mapa de puntos | Introducciones | Faunafri

Atlantic, Indian and Pacific: in tropical and subtropical waters. Absent in the Mediterranean. Highly migratory species.

Longitud en la primera madurez / Tamaño / Peso / Edad

Madurez: Lm 112.5, range 100 - 125 cm
Max length : 250 cm TL macho / no sexado; (Ref. 27000); common length : 180 cm FL macho / no sexado; (Ref. 168); peso máximo publicado: 210.0 kg (Ref. 9987); edad máxima reportada: 17 años (Ref. 137697)

Descripción breve Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 13 - 14; Radios blandos dorsales (total) : 14 - 15; Espinas anales: 0; Radios blandos anales: 14; Vértebra: 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).
Body shape (shape guide): fusiform / normal; Cross section: oval.

Biología     Glosario (por ej. epibenthic)

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).

Ciclo vital y comportamiento de apareamiento Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

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).

Referencia principal Suba sus referencias | Referencias | Coordinador : Collette, Bruce B. | Colaboradores

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)

Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2)

  Vulnerable (VU) (A2bd); Date assessed: 15 January 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Amenaza para el ser humano

  Harmless





Usos humanos

Pesquerías: muy comercial; pesca deportiva: si
FAO - pesquerías: desembarques, perfil de la especie; Publication: search | FIRMS - Stock assessments | FishSource | Sea Around Us

Más información

Ecología Trófica
Alimentos (presas)
Composición de la dieta
consumo de alimento
Raciones de comida
Despredadores
Ecología
Ecología
Home ranges
Ciclo de vida
Reproducción
Madurez
Madurez/Gills rel.
Fecundidad
Puesta
Agregaciones de desove
Huevos
Desarrollo de los huevos
Larva
Dinámica larvaria
Anatomía
Superficie branquial
Cerebro
Otolito
Fisiología
Composición corporal
Nutrientes
Consumo del oxígeno
Tipo de natación
Velocidad de natación
Pigmentos visuales
Sonido de peces
Enfermedades y parásitos
Toxicidad (CL50)
Genética
Genoma
Genética
Heterocigosidad
heritabilidad
Relacionados con el ser humano
Sistemas de acuicultura
Perfiles de acuicultura
Razas
Ciguatera cases
Sellos, monedas, varios
Divulgación
Colaboradores
Referencias
Referencias

Herramientas

Informes especiales

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Fuentes de Internet

Estimaciones basadas en modelos

Temperatura preferida (Referencia 123201): 16.8 - 28.6, mean 26.6 °C (based on 3638 cells).
Índice de diversidad filogenética (Referencia 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).
Nivel trófico (Referencia 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.
Resiliencia (Referencia 120179):  Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (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.
Vulnerabilidad pesquera (Ref. 59153):  High vulnerability (56 of 100). 🛈
Vulnerabilidad climática (Ref. 125649):  Moderate to high vulnerability (47 of 100). 🛈
Categoría de precios (Ref. 80766):   Very high.
Nutrientes (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);