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Scombriformes (Mackerels) >
Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Allothunnus: Greek, allos = other + Greek, thynnos = tunna (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক; মহাসাগরে বিচরনক্ষম (Ref. 51243); গভীরতার পরিসীমা 0 - 20 m (Ref. 86942). Subtropical; 10°S - 50°S, 180°W - 180°E (Ref. 168)
Southern Ocean: circumglobal. One individual taken in Los Angeles Harbor.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 105 cm FL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 5313); common length : 86.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 9684); সবের্াচ্চ প্রকাশিত ওজন : 13.7 kg (Ref. 5313)
পৃষ্ঠীয় কাঁটা (মোট ) : 15 - 18; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 12 - 13; পায়ূ কাঁটা : 0; পায়ূর নরম পাখনা্তুন্ড: 13 - 14; কশেরুকা : 40. Interpelvic process small and bifid. Body naked ventrally behind the long anterior corselet. Dorsal half of body to lateral line covered with scales. Swim bladder absent. The back is bluish, turning to deep purple or almost black on the head; the belly is white, without stripes or spots; the pectoral and pelvic fins purple, their inner sides black.
An occasionally schooling species which feeds mainly on krill (euphausiids), and also on squids and small fishes. Juveniles are found between 20 and 35°S at surface temperatures ranging from 19 to 24°C. Its flesh is paler than that of most true tunas and is very oily, but the cooked meat has fine eating qualities. Mainly marketed fresh.
Life cycle and mating behavior
Maturities | প্রজনন | Spawnings | Egg(s) | Fecundities | শুককীট
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 Red List Status (Ref. 130435)
CITES (Ref. 128078)
Not Evaluated
Threat to humans
Harmless
Human uses
মৎস্য: গৌণ বাণিজ্যিক
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ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature (Ref.
115969): 15.8 - 24.6, mean 18.4 (based on 182 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00464 - 0.01966), b=3.05 (2.88 - 3.22), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 3.7 ±0.1 se; based on diet studies.
স্থিতিস্থাপক (Ref.
120179): মাধ্যম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১.৪-৪.৪ বৎসর (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (70 of 100).
