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Carangiformes (Jacks) >
Istiophoridae (Billfishes)
Etymology: Tetrapturus: Greek, tetra = four + Greek, pteron, fin, wing (Ref. 45335).
Eponymy: George Butler Leacock supplied Lowe with the spearfish holotype and “…rendered valuable assistance to the cause of ichthyology of this island [Madeira]… …generally as well as in this instance. [...] (Ref. 128868), visit book page.
More on author: Lowe.
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
دريايي; اقیانوس رو (Ref. 51243); تغييرات عمق 0 - 200 m (Ref. 43). Subtropical; 42°N - 29°S, 98°W - 18°E (Ref. 43)
Eastern Atlantic and Mediterranean Sea: Positively known only from Madeira, Sicily (Italy), Strait of Gibraltar, and the adjacent Atlantic Ocean off southern Portugal. Can be expected to range widely in the eastern and perhaps central North Atlantic. Central and eastern Atlantic records from Japanese longliner's data need clarification. Highly migratory species.
Size / Weight / سن
Maturity: Lm ?  range ? - ? cm
Max length : 184 cm FL جنس نر / بدون خواص جنسي; (Ref. 43); 181.0 cm FL (female); بيشينه وزن گزارش شده: 21.5 kg (Ref. 43); بيشينه وزن گزارش شده: 21.5 kg
Further study is strongly needed to clarify the validity of this species. Probably oceanic. Length has been transferred from 'Body length' to FL (* 0.15).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Nakamura, I., 1985. FAO species catalogue. Vol. 5. Billfishes of the world. An annotated and illustrated catalogue of marlins, sailfishes, spearfishes and swordfishes known to date. FAO Fish. Synop. 125(5):65p. Rome: FAO. (Ref. 43)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-1)
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Preferred temperature (Ref.
123201): 14.3 - 19.1, mean 17.1 °C (based on 37 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5630 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00195 - 0.01025), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 4.3 ±0.4 se; based on size and trophs of closest relatives
جهندگی (Ref.
120179): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).