Euthynnus alletteratus, Little tunny : fisheries, gamefish

Euthynnus alletteratus (Rafinesque, 1810)

Little tunny
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Native range | All suitable habitat | Point map | Year 2100
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Euthynnus alletteratus   AquaMaps   Data sources: GBIF OBIS
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Euthynnus alletteratus
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分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

条鰭類 > Perciformes (Perch-likes) > Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Euthynnus: Greek, eu = good + Greek, thynnos = tunna (Ref. 45335).  More on author: Rafinesque.

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

; 海; 汽水性の 関連する礁; 海洋回遊性 (Ref. 51243); 深さの範囲 1 - 150 m (Ref. 28173).   Tropical; 56°N - 30°S, 92°W - 42°E

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Atlantic Ocean: in tropical and subtropical waters, including the Mediterranean, Black Sea, Caribbean Sea and Gulf of Mexico. Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea (Ref. 26139).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 41.8  range ? - 60 cm
Max length : 122 cm TL オス/雌雄の選別がない; (Ref. 26340); common length : 80.0 cm TL オス/雌雄の選別がない; (Ref. 5217); 最大公表体重: 16.5 kg (Ref. 40637); 最大記録サイズ: 10 年 (Ref. 28173)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 15 - 16; 背鰭 (合計): 11-13; 肛門の骨 0; 臀鰭: 11 - 15; 脊つい: 39. Anterior spines of first dorsal fin much higher than the those mid-way, giving the fin a strongly concave outline. Interpelvic process small and bifid. Body naked except for corselet and lateral line. Swim bladder absent. Incipient protuberances on 33rd and 34th vertebrae. Back with broken oblique stripes (Ref. 168). Caudal peduncle with 7-8 finlets. Dark stripes on the back and with 3-7 dark spots between pelvic and pectoral fins (Ref. 35388).

生物学     用語集 (例 epibenthic)

Found in neritic waters close inshore (Ref. 13628). This schooling species is an opportunistic predator which feeds on virtually everything within its range, i.e. crustaceans, fishes (mainly clupeoid), squids, heteropods and tunicates. Eggs and larvae are pelagic (Ref. 6769). Specialized traps (madragues) are used in Tunisia and Morocco. Diving bird flocks may indicate large schools (Ref. 9710). Utilized fresh, dried-salted, smoked, canned and frozen (Ref. 9987). A popular game fish (Ref. 9710).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

Eggs are shed in several batches when the water is warmest.

主な参考文献 Upload your references | 参考文献 | コーディネーター : Collette, Bruce B. | 協力者

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のレッドリストの状況は (Ref. 120744)

  軽度懸念 (LC) ; Date assessed: 17 September 2010

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Reports of ciguatera poisoning (Ref. 30303)





Human uses

水産業: 商業; ゲームフィッシュ: はい
FAO(水産業: 代謝; publication : search) | FIRMS (Stock assessments) | FishSource | 私達の周りの海

用具

特記事項

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インターネットの情報源

Estimates based on models

Preferred temperature (Ref. 115969): 11.5 - 27.8, mean 23.3 (based on 1094 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00859 - 0.01164), b=3.05 (3.01 - 3.09), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
栄養段階 (Ref. 69278):  4.5   ±0.0 se; Based on diet studies.
回復力 (Ref. 120179):  手段, 1.4年~4.4年の倍増期間の最小個体群 (K=0.13-0.22; tm=2; tmax=8; Fec=71,000).
Prior r = 0.57, 95% CL = 0.37 - 0.85, Based on 5 stock assessments.
弱み (Ref. 59153):  High vulnerability (57 of 100) .
価格帯 (Ref. 80766):   Medium.