Scyliorhinus hachijoensis, Cinder cloudy catshark

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近縁種
- 種
  Scyliorhinus
- 種
  Scyliorhinidae
- - 分類 -
- Scyliorhininae
- Scyliorhinidae
- Carcharhiniformes
- Elasmobranchii
- Chordata
- Animalia

Scyliorhinus hachijoensis Ito, Fujii, Nohara & Tanaka, 2022

Cinder cloudy catshark

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Image of Scyliorhinus hachijoensis (Cinder cloudy catshark)

No image available for this species;
drawing shows typical species in Scyliorhinidae.

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

板鰓亜鋼(サメとエイ類) (sharks and rays) > Carcharhiniformes (Ground sharks) > Scyliorhinidae (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.

Environment: milieu / climate zone / depth range / distribution range 生態学

海底生の(Ref. 125694). Temperate

分布国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Northwest Pacific: Japan.

サイズ / 重さ / 年齢

Maturity: L_m ? range ? - ? cm
Max length : 41.6 cm TL オス/雌雄の選別がない; (Ref. 125694); 38.6 cm TL (female)

簡単な記述検索表 | 形態学 | 形態計測学

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).

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),

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター : Compagno, Leonard J.V. | 協力者

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)

IUCNのレッドリストの状況は (Ref. 130435: Version 2024-2)

軽度懸念 (LC) ; Date assessed: 06 May 2022

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

Harmless

Human uses

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Trophic ecology
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摂食量
Food rations
捕食動物

Ecology
生態学

Population dynamics
成長のパラメーター
Max. ages / sizes
Length-weight rel.
Length-length rel.
体長組成
Mass conversion
補充
豊度

Life cycle
繁殖
成熟
Maturity/Gills rel.
生産力
放精
Spawning aggregations
卵
卵の開発
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幼生の動力

Distribution
国々
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エコシステム
事件
導入
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Anatomy
カマ
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Physiology
Body composition
Nutrients
酸素消費
水泳形態
泳ぐ速さ
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Diseases & Parasites
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Genetics
遺伝子の
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00263 (0.00138 - 0.00502), b=3.21 (3.04 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

栄養段階 (Ref. 69278): 3.8 ±0.5 se; based on size and trophs of closest relatives

回復力 (Ref. 120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (32 of 100).

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