分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
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: Rhizoprionodon: rhiza (Gr.), root; prion (Gr.) saw; odon (Gr.), tooth, referring to teeth with serrated (saw-like) bases, or roots [replacement name for Rhizoprion Ogilby 1915, preoccupied by Rhizoprion Jourdan 1861 in mammals] (See ETYFish); terraenovae: terra (L.), earth or land; novus (L.), new, i.e., Newfoundland, Canada, where Richardson erroneously thought it occurred (See ETYFish).
More on author: Richardson.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
海洋; 半鹹淡水 居於水底的; 深度上下限 0 - 280 m (Ref. 26938), usually 0 - 10 m (Ref. 55195). 亞熱帶的; 43°N - 25°S, 100°W - 32°W (Ref. 55195)
Western Atlantic: New Brunswick, Canada to the Gulf of Mexico. Southwest Atlantic: coasts of Brazil.
西大西洋: 新布蘭斯維克在加拿大到墨西哥灣。 西南大西洋: 巴西的海岸。
Length at first maturity / 大小 / 重量 / 年齡
成熟度: Lm 87.5, range 85 - 90 cm
Max length : 110 cm TL 雄魚/尚未辨別雌雄; (Ref. 37512); 110.0 cm TL (female); common length : 70.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 37512); 最大體重: 7.3 kg (Ref. 40637); 最大年齡: 10 年 (Ref. 6140)
Small, generally gray, streamlined shark, with long pointed snout. Posterior margin of anal fin straight or slightly concave. Second dorsal fin origin well behind anal fin origin (Ref. 26938).
Body shape (shape guide): fusiform / normal.
小又通常灰色又流線型的鯊魚, 有長的尖吻。 臀鰭的後緣筆直地或些微地凹曲。 第二背鰭鰭起源在臀鰭起源正後方。 (參考文獻 26938)
Reaches at least 103 cm TL (Ref. 244). Abundant in the continental shelves, from the intertidal to deeper waters. Often occurs close to the surf zone off sandy beaches, and also enclosed bays, sounds, and harbors, in estuaries and river mouths. Feeds on small bony fishes, shrimps, crabs, segmented worms and mollusks (gastropod feet). Viviparous, with 1 to 7 young in a litter (Ref. 27549). Size at birth about 29 to 37 cm. Utilized for human consumption. Minimum depth from Ref. 055195.
達到最少 103 公分TL 。 (參考文獻 244) 豐富的在大陸棚中, 從潮間帶對較深的水域。 時常出現接近沙灘外的海浪區, 以及封閉的海灣，聲音與港灣, 在河口與河口中。 吃小的硬骨魚類，蝦，螃蟹，分段的蠕蟲與軟體動物 (腹足動物腳) 。 胎生的,1 到 7 幼魚在一胎。 出生時的大小大約 29 到 37 公分。 供人類食用。
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, placental (Ref. 50449). 1 to 7 young per litter. Larger females carry more young. Size at birth 29-37 cm. Gestation period is 10 to 11 months in the northern Gulf of Mexico. Sex ratio of near term fetuses is 1:1 (Ref. 244).西大西洋: 新布蘭斯維克在加拿大到墨西哥灣。 西南大西洋: 巴西的海岸。
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
無危 (LC) ; Date assessed: 20 June 2019
人類使用
漁業: 自給性漁業; 游釣魚種: 是的
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Estimates based on models
Preferred temperature (參考文獻
123201): 23.4 - 28, mean 27 °C (based on 1016 cells).
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00274 - 0.00664), b=3.00 (2.87 - 3.13), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 4.4 ±0.5 se; based on diet studies.
回復力 (參考文獻
120179): 非常低的, 最小族群倍增時間超過14 年 (K=0.19-0.45(?); tmax=10; tm=4; Fec 1-7).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (50 of 100).
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Climate Vulnerability (Ref.
125649): Very high vulnerability (85 of 100).
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Nutrients (Ref.
124155): Calcium = 23.3 [2.5, 120.6] mg/100g; Iron = 0.89 [0.24, 2.75] mg/100g; Protein = 22.6 [19.7, 24.8] %; Omega3 = 0.372 [0.150, 0.861] g/100g; Selenium = 25.1 [6.4, 70.6] μg/100g; VitaminA = 8.35 [2.78, 24.50] μg/100g; Zinc = 0.452 [0.218, 0.855] mg/100g (wet weight); based on
nutrient studies.
