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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. |
| Pliotrema warreni AquaMaps Data sources: GBIF OBIS |
上传你的 图片 和 影像
照片 | 谷歌图片![Image of Pliotrema warreni (Warren\](/images/thumbnails/jpg/tn_Plwar_f0.jpg "Image of Pliotrema warreni (Warren\")
Pliotrema warreni
Female 图片提供人 Weigmann, S.
照片 | 谷歌图片
Female 图片提供人 Weigmann, S.
分类 / 名称 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: Pliotrema: pleion (Gr.), more; trema (Gr.), hole, referring to six gill slits compared with five in Pristiophorus (See ETYFish); warreni: In honor of English-born South African zoologist Ernest Warren (1871-1945), Director, Natal Government Museum (Pietermaritzburg), who sent specimens to the British Museum (See ETYFish).
Eponymy: Professor Dr Ernest Warren (1871–1945) was an English zoologist who moved to Natal (1903) and became first Director of the Natal Museum, Pietermaritzburg (1903–1935). [...] (Ref. 128868), visit book page.
More on author: Regan.
Etymology: Pliotrema: pleion (Gr.), more; trema (Gr.), hole, referring to six gill slits compared with five in Pristiophorus (See ETYFish); warreni: In honor of English-born South African zoologist Ernest Warren (1871-1945), Director, Natal Government Museum (Pietermaritzburg), who sent specimens to the British Museum (See ETYFish).
Eponymy: Professor Dr Ernest Warren (1871–1945) was an English zoologist who moved to Natal (1903) and became first Director of the Natal Museum, Pietermaritzburg (1903–1935). [...] (Ref. 128868), visit book page.
More on author: Regan.
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
海洋 居于水底的; 深度上下限 10 - 915 m (Ref. 122027), usually 60 - 430 m (Ref. 122027). 亞熱帶的; 22°S - 37°S, 19°E - 45°E (Ref. 54706)
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Western Indian Ocean: off Madagascar and from southern Mozambique to Cape Agulhas, South Africa.
西印度洋: 外海的馬達加斯加與從莫三比克南部到南非的 Agulhas 角。
西印度洋: 外海的馬達加斯加與從莫三比克南部到南非的 Agulhas 角。
首次成熟时的长度 / 大小 / 重量 / 年龄
简单描述 检索表 | 型态特徵 | 形态测量图
This large six-gilled sawshark is distinguished by the following characters: barbel origin to anterior nostrils 1.4-1.6 times anterior nostrils to symphysis upper jaw; prenarial length 1.3-1.4 times prebarbel length; preoral length 1.8-2.3 times interdorsal space; pectoral-fin anterior margin 1.4-1.5 times dorsal-caudal space; mouth width 3.1-3.9 times spiracle length; the first dorsal fin originates about opposite pectoral-fin free rear tips; lateral trunk dermal denticles tricuspidate, rather flat and imbricated. monospondylous centra 53-56; precaudal diplospondylous centra 4-51; total vertebral centra 154-158; rostrum not constricted between barbel origin and nostrils and barbels that are situated about two thirds way from rostral tip to mouth, with prebarbel length about twice, i.e. 1.7-2.1 times, distance from barbel origin to symphysis of upper jaw (vs. barbels situated about half way from rostral tip to mouth, with prebarbel length about equal, i.e. 1.0-1.1 times, distance from barbel origin to symphysis of upper jaw), prebarbel length 60.2-68.0% (vs. 49.4-52.9% of preoral length), preoral length 1.5-1.7 (vs. 1.9-2.0 times prebarbel length), prenarial length 1.3-1.4 (vs. 1.5-1.7 times prebarbel length). Colouration: medium to dark brown dorsally with a pronounced yellowish longitudinal stripe; uniform white ventrally; the dorsal rostrum surface with two distinct longitudinal dark stripes, lateral rostral teeth dark-edged (Ref. 122027).
Cross section: angular.
唯一的鲨鱼有一个锯状的吻与 6 对鳃缝。 (参考文献 5578) 背面灰褐色, 腹面白色的.(参考文献 6587)
Cross section: angular.
唯一的鲨鱼有一个锯状的吻与 6 对鳃缝。 (参考文献 5578) 背面灰褐色, 腹面白色的.(参考文献 6587)
Found on the continental shelf and upper slope to at least 430 m (Ref. 247). Feeds on bony fish, also shrimp, mysids and squid (Ref. 5578). Ovoviviparous (Ref. 50449), with 5 to 7 young in a litter (Ref. 247). Probably uses its saw to stun and kill prey (Ref. 5578). Sometimes caught by sports anglers (Ref. 5578).
栖息于大陆棚与上层斜坡到至少 430 公尺了。 (参考文献 247) 吃硬骨鱼，也捕食虾，糠虾与乌贼。 (参考文献 5578) 卵胎生的 (参考文献 50449), 5 到 7 幼鱼在一胎.(参考文献 247) 可能使用它的锯子打昏并且杀猎物。 (参考文献 5578) 有时被运动垂钓者捕获了。 (参考文献 5578)
栖息于大陆棚与上层斜坡到至少 430 公尺了。 (参考文献 247) 吃硬骨鱼，也捕食虾，糠虾与乌贼。 (参考文献 5578) 卵胎生的 (参考文献 50449), 5 到 7 幼鱼在一胎.(参考文献 247) 可能使用它的锯子打昏并且杀猎物。 (参考文献 5578) 有时被运动垂钓者捕获了。 (参考文献 5578)
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ovoviviparous, with 5 to 7 young in a litter (others have 7 to 17 developing eggs). Size at birth about 35 cm. Embryos feed solely on yolk (Ref. 50449).西印度洋: 外海的馬達加斯加與從莫三比克南部到南非的 Agulhas 角。
主要参考文献
上传您的参考资料 | 参考文献 | 合作者 : Compagno, Leonard J.V. | 合作者
Weigmann, S., O. Gon, R.H. Leeney, E. Barrowclift, P. Berggren, N. Jiddawi and A.J. Temple, 2020. Revision of the sixgill sawsharks, genus Pliotrema (Chondrichthyes, Pristiophoriformes), with descriptions of two new species and a redescription of P. warreni Regan. PLoS ONE, 15 (3)[0228791]:1-56. (Ref. 122027)
CITES
Not Evaluated
对人类的威胁
无害处的
人类利用
渔业: 没有兴趣; 游钓鱼种: 是的
FAO - 渔业: 物种外形; Publication: search | FishSource |
更多信息
解剖学
鳃区
大脑
耳石
鳃区
大脑
耳石
生理学
身体成分
营养素
耗氧量
游泳类型
游泳速度
视觉色素
鱼声
疾病与寄生虫
毒性（半数致死浓度）
身体成分
营养素
耗氧量
游泳类型
游泳速度
视觉色素
鱼声
疾病与寄生虫
毒性（半数致死浓度）
遗传学
基因组
遗传学
异质性
遗传率
基因多样性
基因组
遗传学
异质性
遗传率
基因多样性
工具
特别资料
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网络资源
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | 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 | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | 树状分类阶层 | Wikipedia: 转至, 搜寻 | World Records Freshwater Fishing | Zoobank | 动物学的记录
基于模型的估算
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系统发育多样性指数 (参考文献 82804) |
PD50 = 0.6270 [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). |
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营养阶层 (参考文献 69278) |
4.2 ±0.6 se; based on diet studies. |
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回复力 (参考文献 120179) |
非常低的, 最小族群倍增时间超过14 年 (Fec=5). |
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渔业脆弱性 (Ref. 59153) |
High to very high vulnerability (75 of 100). 🛈 |