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Auxis rochei  (Risso, 1810)

Bullet tuna
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Auxis rochei
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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: Auxis: Greek, auxis = a variety of tunna (Ref. 45335).

Issue
Issue on validity of subspecies: subspecies considered as valid in FB, elevated to species rank as Auxis rochei (Risso, 1810) in Eschmeyer (CofF ver. Mar. 2011: Ref. 86697). Please send references, or more studies are needed.

環境 / 氣候 / 範圍 生態學

; 海洋; 半鹹淡水; 海洋洄游的 (Ref. 51243); 深度上下限 10 - ? m (Ref. 9340).    ? - 28°C (Ref. 168), preferred 27°C (Ref. 107945); 61°N - 51°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 (Western): including the Mediterranean Sea. The eastern Pacific population is recognized as subspecies Auxis rochei eudorax (Ref. 32349). 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 35 - ? cm
Max length : 50.0 cm FL 雄魚/尚未辨別雌雄; (Ref. 168)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 9 - 12; 背的軟條 (總數): 10-13; 臀棘 0; 臀鰭軟條: 12 - 14. Back bluish, turning to deep purple or almost black on head. Scaleless area with pattern of 15 or more fairly broad, nearly vertical dark bars. Belly white. Pectoral and pelvic fins purple, their inner sides black. Body robust, elongate and rounded. Teeth small and conical, in a single series. Pectoral fins short, not reaching vertical line from anterior margin of scaleless area above corselet. A large, single-pointed flap (interpelvic process) between pelvic fins. Body naked except for corselet, which is well developed in its posterior part 9 more than 6 scales wide under second dorsal-fin origin). A strong central keel on each side of caudal-fin base between 2 smaller keels (Ref 9684).

生物學特性     字彙 (例如 epibenthic)

Adults are principally caught in coastal waters and around islands (Ref. 9340). Form schools. Feed on small fishes, particularly anchovies, crustaceans (especially crab and stomatopod larvae) and squids. Eggs and larvae are pelagic (Ref. 6769). Because of their abundance, they are considered an important element of the food web, particularly as forage for other species of commercial interest. Also caught with encircling nets and troll lines (Ref. 9340). Marketed fresh and frozen (Ref. 9340) and also dried or salted, smoked and canned (Ref. 9987).

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

Fecundity ranges between 31,000 and 103,000 eggs per spawning according to the size of the fish.

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.R. Aadland, 1996. Revision of the frigate tunas (Scombridae, Auxis), with descriptions of two new subspecies from the eastern Pacific. Fish. Bull. 94(3):423-441. (Ref. 32349)

IUCN 瀕危狀態 (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

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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

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