Overview

Comprehensive Description

Biology

A common inshore to offshore catshark. Prefers to feed on small bony fishes and crustaceans, also cephalopods (Ref. 244). Oviparous (Ref. 50449).
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Distribution

Southeast Atlantic: Lüderitz, Namibia to central Natal, South Africa.
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Southeastern Atlantic.
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Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Analspines: 0; Analsoft rays: 0
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Size

Maximum size: 1220 mm TL
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Max. size

122 cm TL (male/unsexed; (Ref. 244))
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Diagnostic Description

Bright yellow or golden spots on a dark grey body with irregular blotches and saddles (Ref. 5578), cream below (Ref. 5510); 2nd dorsal much smaller than 1st (Ref. 5578). Small anterior nasal flaps that do not reach mouth, no nasoral grooves (Ref. 244).
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Ecology

Habitat

Depth range based on 531 specimens in 1 taxon.
Water temperature and chemistry ranges based on 234 samples.

Environmental ranges
  Depth range (m): 28.5 - 585.216
  Temperature range (°C): 6.057 - 19.831
  Nitrate (umol/L): 3.346 - 26.999
  Salinity (PPS): 34.402 - 35.345
  Oxygen (ml/l): 3.111 - 5.048
  Phosphate (umol/l): 0.477 - 2.172
  Silicate (umol/l): 6.496 - 22.846

Graphical representation

Depth range (m): 28.5 - 585.216

Temperature range (°C): 6.057 - 19.831

Nitrate (umol/L): 3.346 - 26.999

Salinity (PPS): 34.402 - 35.345

Oxygen (ml/l): 3.111 - 5.048

Phosphate (umol/l): 0.477 - 2.172

Silicate (umol/l): 6.496 - 22.846
 
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Environment

demersal; marine; depth range 26 - 495 m (Ref. 5578)
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Depth range based on 531 specimens in 1 taxon.
Water temperature and chemistry ranges based on 234 samples.

Environmental ranges
  Depth range (m): 28.5 - 585.216
  Temperature range (°C): 6.057 - 19.831
  Nitrate (umol/L): 3.346 - 26.999
  Salinity (PPS): 34.402 - 35.345
  Oxygen (ml/l): 3.111 - 5.048
  Phosphate (umol/l): 0.477 - 2.172
  Silicate (umol/l): 6.496 - 22.846

Graphical representation

Depth range (m): 28.5 - 585.216

Temperature range (°C): 6.057 - 19.831

Nitrate (umol/L): 3.346 - 26.999

Salinity (PPS): 34.402 - 35.345

Oxygen (ml/l): 3.111 - 5.048

Phosphate (umol/l): 0.477 - 2.172

Silicate (umol/l): 6.496 - 22.846
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 26 - 495m.
From 26 to 495 meters.

Habitat: demersal.
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Trophic Strategy

Feeds on fish, cephalopods and crustaceans (Ref. 5578).
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Life History and Behavior

Life Cycle

Oviparous, with a single egg per oviduct at a time (Ref. 244). Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Size upon hatching below 31 cm (size of young with umbilical scars) (Ref. 244).
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Scyliorhinus capensis

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Scyliorhinus capensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 5
Specimens with Barcodes: 5
Species With Barcodes: 1
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Conservation

Threats

Near Threatened (NT)
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: of no interest; gamefish: yes
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Wikipedia

Yellowspotted catshark

The yellowspotted catshark, Scyliorhinus capensis, is a rare catshark of the family Scyliorhinidae. It is found in the southeast Atlantic, from Lüderitz, Namibia to central Natal, South Africa, between latitudes and 37° S. It can grow up to a length of about 1.22 metres (4 ft 0 in). The reproduction of this catshark is oviparous.

Description[edit]

The yellowspotted catshark is a long slender fish with rough skin. The upperparts are light grey, copiously spotted with small golden-yellow spots. There are eight or nine dark patches on the back which bridge the spine. The underside is cream-coloured. Small flaps cover the nostrils but do not extend as far as the mouth and there are no nasoral grooves. There are two triangular dorsal fins, the front one considerably larger than the rear one.[2][3]

Distribution and habitat[edit]

The yellowspotted catshark is found in the seas around the coast of southern Africa at depths down to about 500 metres (1,600 ft). Its range extends from Lüderitz in Namibia to central Natal.[2] Although fairly common off the coast of South Africa it occurs less frequently and in deeper waters in the more tropical parts of its range in Namibia and Natal. Although seen over sandy bottoms, it also frequents rocky reefs.[1]

Biology[edit]

The yellowspotted catshark feeds on small fish, crustaceans and squid.[2] It is an egg-laying species, laying a single egg at a time, and enclosing it in an egg case roughly 8 by 3 centimetres (3.1 in × 1.2 in).[3] The juvenile fish when they hatch may measure about 25 cm (10 in) and the adults can grow to 1.22 metres (4 ft 0 in) but most individuals are under a metre (3 ft) long. This shark is more common on rocky reefs that on sandy seabeds.[1]

Status[edit]

The IUCN, in its Red List of Threatened Species lists the yellowspotted catshark as being "Near Threatened". In the offshore waters where it lives there is a large hake fishery and the yellowspotted catshark is caught and discarded as bycatch during trawling. The rate of reproduction is probably failing to keep up with the depletion of the adult population by this means thus threatening the species' future.[1]

References[edit]

  1. ^ a b c d Compagno, L.J.V.; Krose M.; Brash, J. (2004). "Scyliorhinus capensis". IUCN Red List of Threatened Species. Version 2013.1. International Union for Conservation of Nature. Retrieved 2013-09-04. 
  2. ^ a b c Carpenter, Kent E. "Scyliorhinus capensis (Müller & Henle, 1838)". FishBase. Retrieved 2013-08-25. 
  3. ^ a b "Yellowspotted catshark (Scyliorhinus capensis)". Sharks of the World. Marine Species Identification Portal. Retrieved 2013-08-22. 
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