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Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Carcharhiniformes (Ground sharks) 真鯊目 (Ground sharks) > Carcharhinidae (Requiem sharks) 白眼鮫科 (Requiem sharks)
Etymology: Prionace:prion (Gr.), saw; akis (Gr.), point or barb, referring to serrated (saw-like) cusps on teeth of upper jaw (See ETYFish); glauca:Latin for bluish green or gray (i.e., sea-colored), referring to its color (blue above, whitish below) (See ETYFish). More on author: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range
生態學
Circumglobal in temperate and tropical waters. Western Atlantic: Newfoundland, Canada to Argentina. Central Atlantic. Eastern Atlantic: Norway to South Africa, including the Mediterranean. Indo-West Pacific: East Africa to Indonesia, Japan, Australia, New Caledonia, and New Zealand. Eastern Pacific: Gulf of Alaska to Chile. Probably the widest ranging chondrichthyian. Highly migratory species. 環球分佈於溫帶與熱帶的水域。 西大西洋: 加拿大紐芬蘭到阿根廷。 中大西洋。 東大西洋: 挪威到南非, 包括地中海。 印度-西太平洋: 東非到印尼，日本，澳洲，新加勒多尼亞與紐西蘭。 東太平洋: 阿拉斯加灣到智利。 可能最寬的分佈軟骨魚。 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: Lm199.1, range 170 - 221 cm Max length : 400 cm TL 雄魚/尚未辨別雌雄; (Ref. 35388); common length : 335 cm TL 雄魚/尚未辨別雌雄; (Ref. 5217); 最大體重: 205.9 kg (Ref. 40637); 最大年齡: 20 年 (Ref. 27347)
背棘 (總數) : 0; 臀棘: 0. A slim, graceful blue shark with a long, conical snout, large eyes, and curved triangular upper teeth with saw edges; pectorals long and narrow; no interdorsal ridge (Ref. 5578). Dark blue dorsally, bright blue on the sides, white ventrally (Ref. 5578). Tips of pectoral fins and anal fin dusky (Ref. 9997). The first case of diprosopus tetrophthalmus (cranofacial duplication) in a foetus of this species was reported from South Atlantic (Ref. 119190). 瘦又優美的藍色鯊魚有一個長的, 錐形吻又大的眼 , 與彎曲的三角形的上顎齒具有鋸齒邊; 胸鰭長而狹窄的; 沒有間背脊.(參考文獻 5578) 背面深藍色﹐側邊淡藍色﹐和腹側白色的.(參考文獻 5578) 胸鰭的頂端與臀鰭暗色的.(參考文獻 9997)
Oceanic, but may be found close inshore where the continental shelf is narrow (Ref. 6871, 58302). Usually found to at least 150 m (Ref. 26938). Maximum size from Ref. 128029. Reported from estuaries (Ref. 26340). Epipelagic, occasionally occurs in littoral areas (Ref. 58302). Feeds on fishes (herring, silver hake, white hake, red hake, cod, haddock, pollock, mackerel, butterfish, sea raven and flounders (Ref. 5951)), small sharks, squids, pelagic red crabs, cetacean carrion, occasional sea birds and garbage (Ref. 5578). Viviparous (Ref. 50449). Sexual dimorphism occurs in skin thickness of maturing and adult females (Ref. 49562). May travel considerable distances (one specimen tagged in New Zealand was recaptured 1,200 km off the coast of Chile) (Ref. 26346). Potentially dangerous to humans (Ref. 6871, 13513). Marketed fresh, dried or salted, and frozen; meat utilized for consumption, hides for leather and fins for soup (Ref. 9987). Sexually mature at 250 cm long and 4-5 years old. The female gives birth up to 80 young measuring 40 cm long, gestation lasts almost a year (Ref. 35388). Produces from 4 to 135 young a litter (Ref. 26938). Minimum depth from Ref. 125614.
Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Distinct pairing with embrace (Ref. 205). Viviparous (Ref. 26281), placental (Ref. 50449); 4-63 young in a litter (Ref. 9997); 4-135 (usually 15-30) pups (Ref.58048), about 35-44 cm at birth. Gestation period ranges from 9 to 12 months (Ref. 244).
Sexual dimorphism is evident in skin thickness of maturing and adult females (Ref. 49562). Females have thicker skin layer than males of the same size (Ref. 49562).環球分佈於溫帶與熱帶的水域。 西大西洋: 加拿大紐芬蘭到阿根廷。 中大西洋。 東大西洋: 挪威到南非, 包括地中海。 印度-西太平洋: 東非到印尼，日本，澳洲，新加勒多尼亞與紐西蘭。 東太平洋: 阿拉斯加灣到智利。 可能最寬的分佈軟骨魚。 高度遷移的種,1982年海事法會議的附件一.(參考文獻 26139)
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
