Bythaelurus tenuicephalus Kaschner, Weigmann & Thiel, 2015
Narrowhead catshark
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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. |
| Bythaelurus tenuicephalus AquaMaps Data sources: GBIF OBIS |
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Bythaelurus tenuicephalus
Male 图片提供人 Weigmann, S.
照片 | 谷歌图片
Male 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) > Carcharhiniformes (Ground sharks) > Pentanchidae (Deepwater catsharks)
Etymology: Bythaelurus: bythos (Gr.), depths of the sea, referring to its deepwater habitat; ailouros (Gr.), cat, probably an allusion to the vernacular “catshark,” so named for its cat-like eyes (See ETYFish); tenuicephalus: tenuis (L.), slender; cephalus, from kephale (Gr.), head, referring to its “remarkably” narrow head and snout (See ETYFish).
Etymology: Bythaelurus: bythos (Gr.), depths of the sea, referring to its deepwater habitat; ailouros (Gr.), cat, probably an allusion to the vernacular “catshark,” so named for its cat-like eyes (See ETYFish); tenuicephalus: tenuis (L.), slender; cephalus, from kephale (Gr.), head, referring to its “remarkably” narrow head and snout (See ETYFish).
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
海洋 pelagic-oceanic; 深度上下限 463 - 550 m (Ref. 106604).
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Western Indian Ocean: off Tanzania and Mozambique.
大小 / 重量 / 年龄
简单描述 检索表 | 型态特徵 | 形态测量图
This species is distinguished from its congeners by the following characters: slender head and snout, only slightly bell-shaped in dorsoventral view without distinct lateral indention (vs. distinctly bell-shaped snouts with a strong lateral indention anterior to outer nostrils); has broader claspers in adult males, the base width 2.1% TL (vs. 1.51.8% TL of congeners in the western Indian Ocean); further differs from B. clevai by having a smaller maximum size and a color pattern of fewer and smaller blotches, larger oral papillae, a shorter snout, and broader claspers without knob-like apex and with a smaller envelope and a subtriangular (vs. subrectangular) exorhipidion; differs from B. hispidus by having a longer snout, a longer dorsal-caudal space, broader clasper without knob-like apex, and fewer vertebral centra; differs from B. lutarius by having a smaller maximum size and has a blotched (vs. largely plain) coloration, numerous (vs. lacking) oral papillae, shorter anterior nasal flaps, a longer caudal fin, a shorter pelvic anal space, and shorter and broader claspers (Ref. 104913).
Body shape (shape guide): other (see remarks); Cross section: angular.
Body shape (shape guide): other (see remarks); Cross section: angular.
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
主要参考文献
上传您的参考资料 | 参考文献 | 合作者 | 合作者
Kaschner, C.J., S. Weigmann and R. Thiel, 2015. Bythaelurus tenuicephalus n. sp., a new deep-water catshark (Carcharhiniformes, Scyliorhinidae) from the western Indian Ocean. Zootaxa 4013(1):120-138. (Ref. 104913)
CITES
Not Evaluated
对人类的威胁
人类利用
FAO - 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 - 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
系统发育多样性指数 (参考文献 82804): PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
营养阶层 (参考文献 69278): 3.3 ±0.0 se; based on diet studies.
回复力 (参考文献 120179): 非常低的, 最小族群倍增时间超过14 年 (Preliminary K or Fecundity.).