Cephaloscyllium signourum, Flagtail swellshark

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Cephaloscyllium signourum Last, Séret & White, 2008

Flagtail swellshark
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Native range | All suitable habitat | Point map | Year 2100
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Cephaloscyllium signourum   AquaMaps   Data sources: GBIF OBIS
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分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

板鰓亜鋼(サメとエイ類) (sharks and rays) > Carcharhiniformes (Ground sharks) > Scyliorhinidae (Cat sharks)
Etymology: Cephaloscyllium: Greek, kephale = head + skylion = dogfish (Ref. 80388);  signourum: Name from Latin 'signum' for flag and the Greek 'oura' for tail, refers to the distinctive flag-like dark marking on the terminal lobe of the caudal fin.  More on authors: Last, Séret & White.

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

; 海 底生の漂泳性; 深さの範囲 480 - 700 m (Ref. 76946).   Tropical

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

Western Pacific: Australia; possibly occurring off the islands of New Caledonia, Fiji, and Vanuatu.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 74.1 cm TL (female)

簡単な記述 形態学 | 形態計測学

This medium-sized species has the following set of characters which was based on the holotype: head 7.5% TL in height, trunk 16.3% TL in width; origin of first dorsal-fin is over the anterior pelvic-fin base; prenarial 3.6% TL in length; preorbital snout length is 2.0 times prenarial length, 3.0 in prepectoral length, 6.6 in prepelvic length; snout-vent length long, 51.7% TL; nostril width 2.7% TL; eye-spiracle space narrow, 0.5% TL; pectoral fin medium-sized, its height 12.8% TL, posterior margin 11.9% TL; anal fin tall, 4.0% TL; anal-caudal space is 5.0% TL; precaudal length is 76% TL; interdorsal space is 6.6% TL; teeth with 3 well-developed cusps near symphysis of upper jaw; mostly unicuspidate flank denticles; back without the greatly enlarged denticles; adult clasper unknown; vertebral centra 115-116; tooth count high, 84 teeth in upper jaws, 97 in lower jaws; color of upper half of body medium brown, with a variegated pattern that is not clearly demarcated from the ventral surface; dark saddles (10) evident on body and tail; dorsal fins are pale variegated; dark blotch absent over gills; marking on posterior margin of terminal lobe of caudal fin dark, anteriorly directed, V-shaped; upper surface of pectoral-fin with a dark brown central blotch; centered over ventral origin of caudal fin is a well-developed saddle; ventral surface is uniformly greyish or white in color; juveniles are pale with dark transverse markings appearing as narrow bars and hollow saddles; markings between spiracles not separated into two unconnected pseudo-ocelli (Ref. 76946).

生物学     用語集 (例 epibenthic)

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 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

Last, P.R., B. Séret and W.T. White, 2008. New swellsharks (Cephaloscyllium: Scyliorhinidae) from the Indo-Australian region. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of New Australian Chondrichthyans. CSIRO Marine and Atmospheric Research Paper no. 22. (Ref. 76946)

IUCNのレッドリストの状況は (Ref. 123251)

  欠足データ (DD) ; Date assessed: 17 February 2015

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 6.2 - 10.2, mean 7.7 °C (based on 119 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00170 - 0.00646), b=3.15 (2.97 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.1   ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  低い, 4.5年~14年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
弱み (Ref. 59153):  High vulnerability (56 of 100) .