Cephaloscyllium variegatum, Saddled swellshark

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Cephaloscyllium variegatum Last & White, 2008

Saddled swellshark
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Native range | All suitable habitat | Point map | Year 2100
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Cephaloscyllium variegatum   AquaMaps   Data sources: GBIF OBIS
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Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Scyliorhinidae (Cat sharks)
Etymology: Cephaloscyllium: Greek, kephale = head + skylion = dogfish (Ref. 80388);  variegatum: Name from Latin 'variegatus' meaning various, refers to the strong intraspecific and ontogenetic variability in colour pattern and morphology among the specimens examined.  More on authors: Last & White.

Environment: milieu / climate zone / depth range / distribution range Ecologie

; marien bathypelagisch; diepteverspreiding 114 - 606 m (Ref. 76948).   Subtropical

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Southwest Pacific: Australia.

Length at first maturity / Size / Gewicht / Leeftijd

Maturity: Lm ?, range 63 - ? cm
Max length : 72.0 cm TL mannelijk/geslacht niet bekend; (Ref. 76948); 74.0 cm TL (female)

Korte beschrijving Morfologie | Morfometrie

This medium-sized species is distinguished by the following set of characters: head 9.4-10.5% TL in height, trunk width 14.5-17.1% TL; origin of first dorsal fin over or slightly behind mid pelvic-fin base; prenarial 4.4-5.0% TL in length; length of preorbital snout, 1.5-1.7 times prenarial length, 2.9-3.3 in prepectoral length, 6.4-7.2 in prepelvic length; snout-vent length long, 50.5-52.9% TL; nostril 2.4-2.6% TL in width; eye-spiracle space wide, 0.8-1.3% TL; pectoral fin large, height 12.9-13.2% TL, posterior margin length 10.4-12.1% TL; anal fin 3.5-4.1% TL in height; anal-caudal space 4.5-5.7% SL; precaudal 76-78% TL in length; interdorsal space 6.5-8.0% TL; teeth with 3-7 cusps near symphysis of upper jaw; flank denticles are mainly unicuspidate; back with no greatly enlarged denticles; long adult clasper, up to 8.1% TL, almost reaching anal fin, interspace about 5.4 in anal-fin base; vertebral centra 116-124; teeth in each jaw 68-82; variable colour pattern, not similar between adults and juveniles; adults have 11 distinct or indistinct dark saddle-like markings on body and tail while juveniles are without saddles, instead with fine blackish spots; predorsal saddles are not much wider than interspaces between them; interspiracular saddle width is subequal to eye length; obvious dark blotch over gill slits none; fleshy part of caudal fin appearing as a pale stripe, well demarcated from darker areas above and below (Ref. 76948).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Voornaamste referentie Upload your references | Referenties | Coördinator : Compagno, Leonard J.V. | Medewerkers

Last, P.R. and W.T. White, 2008. Two new saddled swellsharks (Cephaloscyllium: Scyliorhinidae) from Eastern Australia. 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. 76948)

Status op de Rode Lijst van het IUCN (Ref. 123251)

  Bijna bedreigd (NT) (A2bd); Date assessed: 03 December 2018

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Preferred temperature (Ref. 115969): 12 - 17.7, mean 13.8 °C (based on 13 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).
Trophic level (Ref. 69278):  4.1   ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Preliminary K or Fecundity.).
Kwetsbaarheid (Ref. 59153):  Moderate to high vulnerability (54 of 100) .