You can sponsor this page

Thunnus obesus  (Lowe, 1839)

Bigeye tuna
上傳你的 相片 和 影像
Pictures | Stamps, Coins | Google 影像
Image of Thunnus obesus (Bigeye tuna)
Thunnus obesus
Picture by Chow, S.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii 輻鰭魚綱 (條鰭魚) > Perciformes (Perch-likes) > Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Thunnus: Greek, thynnos = tunna (Ref. 45335).

環境 / 氣候 / 範圍 生態學

; 海洋; 海洋洄游的 (Ref. 51243); 深度上下限 0 - 250 m (Ref. 168), usually 0 - 50 m (Ref. 89423).    13°C - 29°C (Ref. 168), preferred 27°C (Ref. 107945); 45°N - 43°S, 180°W - 180°E

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Atlantic, Indian and Pacific: in tropical and subtropical waters. Absent in the Mediterranean. Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea (Ref. 26139).

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm ?, range 100 - 125 cm
Max length : 250 cm TL 雄魚/尚未辨別雌雄; (Ref. 27000); common length : 180 cm FL 雄魚/尚未辨別雌雄; (Ref. 168); 最大體重: 210.0 kg (Ref. 9987); 最大年齡: 11 年 (Ref. 30326)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 13 - 14; 背的軟條 (總數): 14-15; 臀棘 0; 臀鰭軟條: 14; 脊椎骨: 39. A large species, deepest near the middle of the first dorsal fin base. Lower sides and belly whitish; a lateral iridescent blue band runs along the sides in live specimens. The first dorsal fin is deep yellow, the second dorsal and anal fins are light yellow, the finlets are bright yellow edged with black.

生物學特性     字彙 (例如 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).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

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).

主要參考資料 Upload your references | 參考文獻 | 合作者 : Collette, Bruce B. | 合作者

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 瀕危狀態 (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

對人類具威脅

 




人類使用

漁業: 高經濟性; 游釣魚種: 是的
FAO(漁業: 產生, 魚種描繪; publication : search) | FIRMS (Stock assessments) | FisheriesWiki | 周邊海洋

工具

特別的報告

下載 XML

網路資源