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Katsuwonus pelamis (Linnaeus, 1758)

Skipjack tuna
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Katsuwonus pelamis   AquaMaps   Data sources: GBIF OBIS
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Katsuwonus pelamis
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Australia country information

Common names: Aku, Bonito, Oceanic bonito
Occurrence: native
Salinity: marine
Abundance: abundant (always seen in some numbers) | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Importance: commercial | Ref: FAO, 1994
Aquaculture: never/rarely | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Regulations: restricted | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Uses: gamefish: yes;
Comments: They inhabit waters off the east coast from Lady Elliot Island in Queensland to Storm Bay in Tasmania, but are not present within the Great Barrier Reef. The southern limit of distribution on the east coast varies seasonally (Ref. 168), such that in late winter and spring the fish are not found south of the New South Wales-Victorian border. In the west, their distribution extends from Kangaroo Island in the Great Australian Bight to Cape Leeuwin in southern Western Australia, and north to Broome (Ref. 168). Stock structure: The stock structure of skipjack tuna as of 1993, from the Pacific and Indian oceans has not been determined. Only 2 of the several hypotheses for Pacific Ocean skipjack tuna stock structure are widely supported. The first proposes at least 5 sub-populations within the Pacific, including 2 in the western Pacific (Ref. 28952); and the alternative hypothesis proposes that whereas there are no distinct subpopulations, the probability of skipjack tuna schools interbreeding is proportional to the distance between each group (Ref. 28959, 28961). There is no information on the stock structure of skipjack tuna in the Indian Ocean. Commercial fishery: Skipjack tuna have been caught by Australian commercial fishers since the development of pole-and-line fisheries targeting southern bluefin tuna (Thunnus maccoyii) in the 1950s. However, only small amounts of skipjack tuna are targeted in this fishery in most years because of their lower value. Additionally, purse seine vessels operating in the southern bluefin tuna fishery have taken significant catches of skipjack tuna in some years, particularly in the Great Australian Bight. The total catch of skipjack tuna taken varied between 100 t and 1200 t per year between 1975-76 and 1989-90. The main fishing area for skipjack tuna in Australia is in the southeast from Ulladulla to just south of Gabo Island. Two methods are used in the fishery: pole-and-line and purse seining. The fishery has developed from catches of about 150 t in 1985-86 to an estimated 6000 t in 1990-91 and 1991-92, and 4689 t in 1996-97. Purse seine vessels generally land a greater proportion of the catch. Pole-and-line vessels often fish skipjack tuna schools in co-operation with purse seine vessels. Yellowfin tuna (Thunnus albacares) and albacore (T. alalunga) are taken as bycatch of both fishing methods. The fishing season normally extends from December to March. The skipjack tuna caught are usually between 2 kg and 3 kg, yet larger fish tend to be caught late in the season in southern waters. The main pot of landing for skipjack tuna is Eden, and the cannery there processes most of the Australian catch. Some skipjack tuna is processed at the Port Lincoln cannery in South Australia. Some of the skipjack tuna catch is sold for bait depending on demand from other fisheries and the prevailing price for canning fish. Only a small amount is sold on the domestic fresh fish market. Recreational fishery: Skipjack tuna are commonly caught by sport and recreational fishers in southeastern Australian waters. Most fish are caught by trolling or casting small lures from a boat. Catches are also made using flies or baits of whole, small fish or flesh strips (Ref. 27128). Skipjack tuna are often used as live or dead baits for larger tuna species and billfish. The flesh is also a popular bait amongst anglers for a variety of marine fish. The largest skipjack tuna caught under Game Fishing Association of Australia rules up to 1993, was 11.5 kg, landed in Queensland. Resource status: There are no estimates of sustainable yield or stock size for skipjack tuna in Australian waters. An estimated 780,000 t of skipjack tuna were caught in the western Pacific (which includes Australia) in 1990 (Ref. 28956). Exploitation rates calculated from tagging studies indicate that significantly higher catches can be sustained (Ref. 28956, 28960, 28959). Also Ref. 2334.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: http://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
National Database:

Common names from other countries

Listao, Listado, Тунец полосатый (=скипджек), ... more

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Scombriformes (Mackerels) 鱸形目 (Mackerels) > Scombridae (Mackerels, tunas, bonitos) 鯖科 (Mackerels, tunas, bonitos) > Scombrinae
Etymology:   More on author: Linnaeus.

Environment: milieu / climate zone / depth range / distribution range 生態學

海洋; 海洋洄游的; 深度上下限 0 - 260 m (Ref. 9340), usually 0 - ? m (Ref. 55287).   熱帶; 15°C - 30°C (Ref. 168); 63°N - 47°S, 180°W - 180°E

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

Cosmopolitan in tropical and warm-temperate waters. Not found in the Black Sea. Highly migratory species,
全球分佈於熱帶與溫帶-溫帶水域。 不出現在地中海東部 (參考文獻 28950) 與黑海。 高度遷移的種,1982年海事法會議的附件一.(參考文獻 26139)

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm 41.3, range 40 - 45 cm
Max length : 110 cm FL 雄魚/尚未辨別雌雄; (Ref. 89423); common length : 80.0 cm FL 雄魚/尚未辨別雌雄; (Ref. 168); 最大體重: 34.5 kg (Ref. 168); 最大年齡: 12 年 (Ref. 168)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 14 - 16; 背的軟條 (總數): 14-15; 臀棘 0; 臀鰭軟條: 14 - 15; 脊椎骨: 41. This species is distinguished by the following characters: body fusiform, elongate and rounded; teeth small and conical, in a single series; gill rakers on first gill arch numerous, 53-63; D1 XIV-XVI, dorsal fins separated by a small interspace (not larger than eye), the second followed by 7-9 finlets; anal fin followed by 7-8 finlets; pectoral fins short, with 26-27 rays; 2 flaps (interpelvic process) between pelvic fins; body scaleless except for corselet and lateral line; a strong keel on each side of caudal-fin base between 2 smaller keels. Colour of back dark purplish blue, lower sides and belly silvery, with 4-6 very conspicuous longitudinal dark bands which in live specimens may appear as discontinuous lines of dark blotches (Ref. 9684).
腹鰭間的突起小而兩裂的。 身體沒有鱗片除了甲胄與側線。 泳鰾不存在。 背部顏色較深帶紫色的藍色, 下側與腹面銀色的, 對在活體中可能呈現黑色斑塊的連續線的六個非常顯著的縱向深色條紋有四個。

生物學特性     字彙 (例如 epibenthic)

Found in offshore waters; larvae restricted to waters with surface temperatures of 15°C to 30°C (Ref. 6390). Exhibit a strong tendency to school in surface waters with birds, drifting objects, sharks, whales and may show a characteristic behavior like jumping, feeding, foaming, etc. Feed on fishes, crustaceans, cephalopods and mollusks; cannibalism is common. Spawn throughout the year in the tropics, eggs released in several portions (Ref. 35388). Eggs and larvae are pelagic (Ref. 6769). Preyed upon by large pelagic fishes (Ref. 6885). Also taken by trolling on light tackle using plugs, spoons, feathers, or strip bait (Ref. 9684). Marketed fresh, frozen or canned (Ref. 9340, 9684 ); also dried-salted and smoked (Ref. 9987).

發現於離岸水域了; 仔魚用對 30 °C 的 15 °C 的表面溫度侷限於水域了。 (參考文獻 6390) 強烈地趨向於在水表群集伴隨著鳥, 漂流目標，鯊魚, 鯨而且可能顯示一個特殊的行為類似跳躍, 進食，起泡沫, 等等捕食魚，甲殼動物，頭足類動物與軟體動物; 嗜食同類是普遍。 被大的大洋性的魚捕食了。 (參考文獻 6885) 在使用人工餌,匙形假餌,條狀誘餌的輕型漁具上也用拖釣捕獲。 (參考文獻 9684) 在市場上銷售生鮮地了, 凍結或裝於罐頭;(參考文獻 9340) 也乾燥鹽醃而且煙燻.(參考文獻 9987) 在熱帶中產卵全年度, 卵分好幾次釋出.(參考文獻 35388)

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

In tropical waters, reproductively active female skipjack tuna spawn almost daily.全球分佈於熱帶與溫帶-溫帶水域。 不出現在地中海東部 (參考文獻 28950) 與黑海。 高度遷移的種,1982年海事法會議的附件一.(參考文獻 26139)

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. 130435)

  無危 (LC) ; Date assessed: 15 January 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  有雪卡魚毒中毒的報導 (Ref. 4690)




人類使用

漁業: 高經濟性; 游釣魚種: 是的
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Estimates based on models

Preferred temperature (Ref. 115969): 13.3 - 29, mean 26.2 (based on 8934 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00955 - 0.01202), b=3.10 (3.07 - 3.13), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
營養階層 (Ref. 69278):  4.4   ±0.5 se; based on diet studies.
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (K=0.3-0.5; tm=2-3; tmax=12; Fec=61,516).
Prior r = 0.57, 95% CL = 0.37 - 0.85, Based on 7 stock assessments.
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (38 of 100).
Climate Vulnerability (Ref. 125649):  Moderate vulnerability (41 of 100).
價格種類 (Ref. 80766):   High.