Common names from other countries
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
اقیانوس رو (مرجع 75906); تغييرات عمق 0 - 8000 m (مرجع 1005). Tropical; 10°C - 28°C (مرجع 75906); 90°N - 90°S, 180°W - 180°E
Indo-Pacific, Atlantic Ocean and Mediterranean and Black Sea. Warm temperate and tropical waters. It is not reported in Antarctic territories (Ref. 128552) [Mediterranean population: IUCN 2010 (Ref. 84930): EN, A2abc.]
Length at first maturity / Size / Weight / سن
Maturity: Lm ?, range 160 - 190 cm Max length : 260 cm TL جنس نر / بدون خواص جنسي; (مرجع 1394); 230 cm TL (female); بيشينه وزن گزارش شده: 135.0 kg (مرجع 1394)
Found in tropical coastal waters (Ref. 1522). Inhabits neritic waters over continental shelves (Ref. 80684). Usually found offshore. Commonly in large herds of 30 or more individuals (Ref. 801). Feeds on small schooling fish and squid; at night on creatures associated with the deep scattering layer (DSL), which migrates towards the surface in the dark (Ref. 1394). Preyed upon by great white sharks (Ref. 8891). Delphinus capensis tropicalis: They were reported to bow ride although not in areas particularly where hunting occurs. Schools in offshore areas are somewhat larger than coastal ones. Some form mixed schools with spinner dolphins (Stenella longirostris), and remains on the outskirts of the spinner school generally. Sexual maturity probably occurs at 200 cm. It is associated with Sardinella sp., various tunas, stomach nematodes, cirriped barnacles, and the isopod Cirolana parva (Ref. 79556).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae
Seasonal reproduction (Ref. 97375).
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
Jefferson, T.A., S. Leatherwood and M.A. Webber. 1993. (مرجع 1394)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2024-2)
وضعيت از نظر سايتس (مرجع 108899)
استفاده انسانی
ماهي گيري – شيلات: تجاري
FAO - ماهي گيري – شيلات: landings, نمايه گونه | FishSource | Sea Around Us
ابزارها
منابع اينترنتي
Estimates based on models
Preferred temperature
(Ref.
115969): 1.3 - 10.3, mean 2.4 (based on 15374 cells).
جهندگی
متوسط, كمينه زمان لازم براي دو برابر شدن جمعيت 4/1 – 4/4 سال (K=0.2; tm=9).
آسيب پذيری
Very high vulnerability (75 of 100).
طبقه قيمت
Unknown.