分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Hemigaleidae (Weasel sharks)
Etymology: Hemipristis: hemi-, from hemisys (Gr.), half; pristis, from pristes (Gr.), sawyer (but here meaning saw), allusion not explained, possibly referring to how marginal serrations of teeth of H. serra (type species, a fossil) do not extend over the entire length of each tooth. (See ETYFish); elongata: Latin for prolonged, referring to its long and slim body. (See ETYFish).
More on author: Klunzinger.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 居于水底的; 深度上下限 1 - 130 m (Ref. 6871). 熱帶; 41°N - 34°S, 12°E - 156°E (Ref. 6871)
Indo-West Pacific: Red Sea and southeast Africa, including Persian Gulf (Ref. 68964) to Philippines, north to China, south to Australia.
印度-西太平洋: 紅海與非洲東南部到菲律賓,北至中國, 南至澳洲。
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm ?, range 120 - ? cm
Max length : 240 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5578); common length : 200 cm TL 雄鱼/尚未辨别雌雄; (Ref. 13567)
背棘 (总数): 0; 背的软条 (总数): 0; 臀棘 0; 臀鳍软条: 0. A slender weasel shark with a long, broadly rounded snout, large curved, saw-edged teeth in the upper jaw, and hooked lower teeth protruding from mouth; gill slits long; fins strongly curved (Ref. 5578). Light grey or bronzy with no prominent markings (Ref. 5578).
一只细长的鼬鼠在上颌 , 与钩状的下颚齿中鲨鱼有一个长又宽广圆形的吻大的弯曲又边缘锯状的齿从嘴凸出; 鳃缝长的; 鳍强烈的弯曲.(参考文献 5578) 浅灰色或青铜色没有突出的斑纹.(参考文献 5578)
A coastal species, found inshore and offshore on the continental and insular shelves (Ref. 244). Feeds on sharks, rays and bony fishes (Ref. 244); also cephalopods (Ref. 13567). Viviparous (Ref. 50449). Thought to be potentially dangerous because of its large, fearsome teeth and shallow-water habitat, but has not been recorded in an attack on people (Ref. 244). Caught regularly by inshore gillnet, bottom trawl (occasionally) and longline fisheries (Ref.58048). Regularly taken in artisanal fisheries (Ref. 13567). Utilized fresh for human consumption, liver processed for vitamins, fins used in the oriental shark fin trade, and by-products processed into fishmeal (Ref. 244). Most adults below 200 cm (Ref. 30573).
一个沿岸鱼种, 发现岸边与外海的在大陆架与岛屿棚上.(参考文献 244) 吃鲨鱼， 与硬骨鱼类;(参考文献 244) 也捕食头足类.(参考文献 13567) 胎生的.(参考文献 50449) 被认为可能危险由于它的大又吓人的齿与浅水的栖息地了, 但是没有在一个对人的攻击中被记录.(参考文献 244) 经常地被渔民捕获.(参考文献 13567) 生鲜使用供人类消费, 肝脏加工成维他命了, 鳍被用于东方的鲨鱼鳍贸易了，而且副产物加工成鱼粉了。 (参考文献 244) 大多数的成鱼小于 200 公分.(参考文献 30573)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Viviparous, with 2 to 11 young in a litter (Ref. 6871) after a gestation period of 7-8 months; possibly reproduces in alternate years (Ref.58048). Size at birth about 45-52 cm TL (Ref. 13567, Ref.58048). Distinct pairing with embrace (Ref. 205).印度-西太平洋: 紅海與非洲東南部到菲律賓,北至中國, 南至澳洲。
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)
人类利用
渔业: 商业性
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Estimates based on models
Preferred temperature (Ref.
123201): 23.8 - 29, mean 27.9 °C (based on 2110 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00147 - 0.00899), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 4.3 ±0.3 se; based on diet studies.
回复力 (Ref.
120179): 非常低的, 最小族群倍增时间超过14 年 (Fec=2).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 19.4 [3.2, 106.9] mg/100g; Iron = 0.636 [0.166, 1.913] mg/100g; Protein = 19.3 [17.2, 21.4] %; Omega3 = 0.101 [0.042, 0.245] g/100g; Selenium = 64.4 [18.5, 200.7] μg/100g; VitaminA = 13.4 [4.4, 42.6] μg/100g; Zinc = 0.614 [0.292, 1.120] mg/100g (wet weight);
