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)
白眼鮫目 (Ground sharks) >
Scyliorhinidae (Cat sharks)
貓鮫科(Cat sharks) (Cat sharks) > Scyliorhininae
Etymology: Scyliorhinus: skylion, Greek for dogfish or small shark; rhinus, from rhine (Gr.), rasp, alluding to a shark’s jagged, rasp-like skin (See ETYFish); hachijoensis: Named for the species’ main collection area, Hachijojima Island.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
分布
领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Northwest Pacific: Japan.
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 41.6 cm TL 雄鱼/尚未辨别雌雄; (Ref. 125694); 38.6 cm TL (female)
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: anterior nasal flaps not reaching the upper lip (vs. flaps reaching upper lip, and sometimes covering it, in canicula, cervigoni, comoroensis, duhamelii, garmani, stellaris); absence of nasoral grooves and posterior nasal flaps situated posterior to excurrent apertures (vs. present and posterior nasal flaps laterally situated in canicula, duhamelii); mouth length less than half of mouth width (vs. mouth length more than or equal half of mouth width except in torazame, ugoi); anal fin height more than caudal peduncle height (vs. less in boa, duhamelii, torazame, torrei), and greater than or equal to half of mouth width (vs. less than half of mouth width in boa, capensis, duhamelii, haeckelii, hesperius, meadi, torazame, torrei, ugoi); saddles darker than the background color (vs. inconspicuous or absent in boa, cabofriensis, cervigoni, duhamelii, garmani, torrei, and dark lines in retifer). Colouration: body grayish brown to dark brown with well-defined light spots and small dark spots (vs. no spots in retifer, yellow to golden spots in capensis, no light spots in cervigoni, garmani, meadi, retifer, and no dark spots in capensis, comoroensis, hesperius, meadi, torazame, torrei); light spots spiracle-sized or larger (vs. predominantly smaller than spiracles in boa, cabofriensis, canicula, duhamelii, stellaris, ugoi); dark spots smaller than spiracles (vs. predominantly larger than spiracles in cervigoni, duhamelii, garmani, haeckelii, stellaris); number of monospondylous vertebrae 34-36 (vs. counts higher except in duhamelii, torazame, torrei); clasper with hooks (vs. none inn other pecies except torazame); accessory terminal cartilage present (vs. absent in cabofriensis, cervigoni, comoroensis, duhamelii, haeckelii, stellaris, torrei, ugoi); egg case surface with irregularities (vs. smooth in all other species) (Ref. 125694).
Cross section: angular.
The size of males ranged from 29.4-41.6 cm TL (n = 6) and females from 30.1-38.6 cm TL (n = 22); size at first maturity is not precisely defined, but males had well-developed claspers at 34.6 cm TL and females had egg cases at 34.2 cm TL. Reproduction is by single oviparity, one egg case for each oviduct. The egg cases are amber in color, with tendrils and surface irregularities that resemble wrinkles. Maximum case length without tendrils (ML) was 44.6–56.25 mm, and maximum case width was 19.45–22.5 mm (33.4–42.1 %ML) (n = 7). Stomachs contents have small crustaceans, small bony fishes, and polychaets (Ref. 125694),
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ito, N., M. Fujii, K. Nohara and S. Tanaka, 2022. Scyliorhinus hachijoensis, a new species of catshark from the Izu Islands, Japan (Carcharhiniformes: Scyliorhinidae). Zootaxa 5092(3):331-349. (Ref. 125694)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
工具
特别资料
下载 XML
网络资源
基于模型的估算
系统发育多样性指数 (参考文献
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00140 - 0.00518), b=3.21 (3.04 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.8 ±0.5 se; based on size and trophs of closest relatives
回复力 (参考文献
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
渔业脆弱性 (Ref.
59153): Low to moderate vulnerability (32 of 100).
🛈
