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) >
Pristiophoriformes (Saw sharks) >
Pristiophoridae (Saw sharks)
Etymology: Pristiophorus: pristio-, presumably derived from prio (Gr.), to saw, but treated here as a noun (a saw); phorus, from phoreus (Gr.), bearer or carrier, referring to saw-like snout (note also that pristis is Greek for sawfish). (See ETYFish); cirratus: Latin for curly or fringed, referring to long, string-like ventral barbels. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 居于水底的; 深度上下限 37 - 310 m (Ref. 6871), usually 37 - 146 m (Ref. 54709). 亞熱帶的; 28°S - 45°S, 113°E - 154°E (Ref. 54709)
Eastern Indian Ocean: southern Australia (Ref. 6871). Does not occur in the Western Central Pacific (Ref. 31368).
東印度洋: 澳洲南部.(參考文獻 6871) 不會出現在中西太平洋.(參考文獻 31368)
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm ?, range 97 - ? cm
Max length : 137 cm TL 雄鱼/尚未辨别雌雄; (Ref. 247); common length : 125 cm TL 雄鱼/尚未辨别雌雄; (Ref. 9987); 最大年龄: 15 年 (Ref. 6871)
Pristiophorus cirratus has a long, narrow, and narrowly tapering rostrum (rostrum length is 27-29% of TL), distance from rostral tip to barbels about equal or slightly greater than distance from barbels to mouth (1:1.2-1.3); distance from rostral barbels to nostrils slightly less or equal to distance from nostrils to 1st to 4th gill slits. About 9-10 large rostral teeth on each side of the rostrum in front of the barbels, 9 behind them; distance from mouth to nostrils 1.3-1.4 times internarial space. Tooth rows 39-49 in upper jaw. Dorsal and pectoral fins covered with denticles in large specimens. Lateral trunk denticles largely unicuspidate. First dorsal fin origin behind free rear tips of pectorals by eye length or more (Ref. 247).
P. cirratus has a body pattern of dark blotches (mostly darker bands between pectoral fin bases, over gill slits, between spiracles and below dorsal fins) and spots (occasionally faint). Nostrils, almost circular, are situated about 2/3 way from barbels to corner or mouth, width at nostrils more than 4.5 in preoral snout in adults; preoral snout length more than 2.3 times distance from barbels to snout tip (Ref. 6871). Rostral teeth with dark margins; underside abruptly uniformly white (Ref. 41394). First dorsal fin origin behind free rear tips of pectorals by eye length or more (Ref. 247). Caudal fin almost straight, with slender upper and lower lobes; pectoral well developed but are not ray-like (Ref. 6871).
长吻锯鲨［Pristiophorus cirratus］ 有一个长的，狭窄的，与狭窄尖端细的喙 (喙长度是 27-29% 的 TL) ，从嘴的顶端到触须的距离大约相等或些微大于从触须到嘴 (1:1.2-1.3) 的距离; 从嘴的触须到鼻孔的距离些微比较少的或等于从到第一的鼻孔到第 4个鳃缝的距离。 大约 9-10 大的嘴在触须之前牙齿在喙的两边,9个在后他们; 距离从嘴巴到鼻孔 1.3-1.4 倍于鼻孔间隙。 在上颌中的齿列 39-49。 背部的与胸鳍在大的个体中覆盖着细齿了。 侧面的躯干细齿相当单尖端。 第一背鳍起点在眼径或更多的胸鳍的鳍游离后端后面。 (参考文献 247)
P. cirratus 有一个黑色斑点的体色 (在胸鳍基底之间的大部份比较黑的条纹, 在鳃缝之上, 在呼吸孔以下背鳍之间) 与斑点。 (偶然模糊) 鼻孔, 几乎圆形, 大约位于从触须到角落的 2/3个方法或嘴, 宽度在口前吻中的鼻孔超过 4.5 当成鱼时; 口前吻的长度超过 2.3 从触须到吻顶端倍距离。 (参考文献 6871) 嘴的牙齿有黑边; 下面突然全白色.(参考文献 41394) 第一背鳍起点在眼径或更多的胸鳍的鳍游离后端后面。 (参考文献 247) 尾鳍几乎直的, 有细长的上叶与下叶; 胸的发展良好的但是不是像鳍条一样的.(参考文献 6871)
Found on the continental shelf and upper slope. Forms schools. Feeds on small fishes, including cornet fishes (Fistularia), and crustaceans. Ovoviviparous, with 3-22 young in a litter (48360). Size at birth about 31-34 cm. May live for more than 15 years. Meat marketed fresh and frozen.
栖息于大陆棚与上层斜坡了。 形成鱼群。 吃小鱼,包括短号鱼 ( Fistularia), 与甲壳动物。 卵胎生的, 有三个 -22 幼鱼在一胎.(48360) 出生时的大小大约 31-34 公分。 可以活到超过 15 年。 生鲜使用与冷冻; 优良质量的肉。
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). Males mature at about 97 cm, born at about 38 cm (Ref. 6871). Common sawshark lives for more than 15 years. Mature females appear to breed every 1-2 years, carrying from 3-22 young, with about 10 being the average. After 12 months' gestation, the pups are born in shallow coastal areas. They are about 11-14.5 in (27-37 cm) long at birth (Ref. 48640).東印度洋: 澳洲南部.(參考文獻 6871) 不會出現在中西太平洋.(參考文獻 31368)
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 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
人类利用
渔业: 商业性
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Estimates based on models
Preferred temperature (Ref.
123201): 14 - 17.7, mean 15.4 °C (based on 112 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 4.2 ±0.71 se; based on food items.
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (tmax=15; Fec=3).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (82 of 100).
