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Pristiophorus japonicus Günther, 1870
Japanese sawshark
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Pristiophorus japonicus AquaMaps Data sources: GBIF OBIS |
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); japonicus: -icus (L.), belonging to: Japan, where type locality (not specified) is situated (See ETYFish).
More on author: Günther.
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); japonicus: -icus (L.), belonging to: Japan, where type locality (not specified) is situated (See ETYFish).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range 生态学
分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri
Northwest Pacific: Japan, Korea, northern China. Does not occur in the Western Central Pacific (Ref. 31368).
西北太平洋: 日本，韓國，中國北部。 不會出現在中西太平洋.(參考文獻 31368)
西北太平洋: 日本，韓國，中國北部。 不會出現在中西太平洋.(參考文獻 31368)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 136.0 cm TL (female)
Max length : 136.0 cm TL (female)
简单描述 检索表 | 型态特徵 | 形态测量图
Pristiophorus japonicus has a long, narrow, and narrowly tapering rostrum (rostrum length is 26-29% of TL), distance from rostral tip to barbels about equal or slightly greater than distance from barbels to mouth (1:1.1-1.2); distance from rostral barbels to nostrils about equal to distance from nostrils to 1st gill slits. About 15-26 large rostral teeth on each side of the rostrum in front of the barbels, 9-17+ behind them; distance from mouth to nostrils 1.1-1.2 times internarial space. Tooth rows 34-58 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).
Caudal fin almost straight, with slender upper and lower lobes; pectoral well developed but are not ray-like (Ref. 6871).
日本锯鲨［Pristiophorus japonicus］ 有一个长的，狭窄的，与狭窄尖端细的喙 (喙长度是 26-29% 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 (1:1.1-1.2) 的距离; 从嘴的触须到鼻孔的距离大约等于从鼻孔到第一鳃缝的距离。 大约 15-26 大的嘴在触须之前牙齿在喙的两边, 在他们后面的 9-17+; 距离从嘴巴到鼻孔 1.1-1.2 倍于鼻孔间隙。 在上颌中的齿列 34-58。 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) 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)
日本锯鲨［Pristiophorus japonicus］ 有一个长的，狭窄的，与狭窄尖端细的喙 (喙长度是 26-29% 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 (1:1.1-1.2) 的距离; 从嘴的触须到鼻孔的距离大约等于从鼻孔到第一鳃缝的距离。 大约 15-26 大的嘴在触须之前牙齿在喙的两边, 在他们后面的 9-17+; 距离从嘴巴到鼻孔 1.1-1.2 倍于鼻孔间隙。 在上颌中的齿列 34-58。 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) 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)
Lives on continental shelves and upper slopes on or near the bottom. Also found in coastal waters on sand or mud bottoms. Feeds on small bottom organisms using its barbels to poke the bottom with its snout. Ovoviviparous, with 12 young in a litter.
生活在大陆架与上层斜坡在底部上面或附近。 也发现于沿岸水域的砂上或泥底。 吃使用它的触须拨开底部的小的底部生物用它的吻。 卵胎生的, 具有 12 幼鱼在一胎。
生活在大陆架与上层斜坡在底部上面或附近。 也发现于沿岸水域的砂上或泥底。 吃使用它的触须拨开底部的小的底部生物用它的吻。 卵胎生的, 具有 12 幼鱼在一胎。
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).西北太平洋: 日本，韓國，中國北部。 不會出現在中西太平洋.(參考文獻 31368)
主要参考文献
Upload your references | 参考文献 | 合作者 : Compagno, Leonard J.V. | 合作者
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)
CITES
Not Evaluated
对人类的威胁
无害处的
人类利用
渔业: 商业性
FAO - 渔业: 物种外形; Publication: search | FishSource |
更多信息
Population dynamics
成长参数
Max. ages / sizes
Length-weight rel.
Length-length rel.
体长-频率
Mass conversion
入添量
丰度
成长参数
Max. ages / sizes
Length-weight rel.
Length-length rel.
体长-频率
Mass conversion
入添量
丰度
Anatomy
鳃区
Brain
Otolith
鳃区
Brain
Otolith
Physiology
Body composition
Nutrients
耗氧量
游泳类型
游泳速度
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
耗氧量
游泳类型
游泳速度
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
遗传学
Heterozygosity
遗传率
遗传学
Heterozygosity
遗传率
工具
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特别资料
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网络资源
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes: 属, 种 | DiscoverLife | ECOTOX | FAO - 渔业: 物种外形; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: 基因组, 核苷酸 | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | 国家资料库 | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | 树状分类阶层 | Wikipedia: 转至, 搜寻 | World Records Freshwater Fishing | Zoobank | 动物学的记录
Estimates based on models
Preferred temperature (Ref. 123201): 7.7 - 21.8, mean 17.4 °C (based on 199 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 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): 3.8 ±0.58 se; based on food items.
回复力 (Ref. 120179): 低的, 最小族群倍增时间4.5 - 14 年 (Fec=12).
Fishing Vulnerability (Ref. 59153): Very high vulnerability (82 of 100).