Elasmobranchii (haaien en roggen) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Scyliorhinidae (Cat sharks) > Scyliorhininae
Etymology: Poroderma: poros (Gr.), hole or passage; derma (Gr.), skin or hide, allusion not explained nor evident (Smith proposed name without a description). (See ETYFish); africanum: -anum (L.), belonging to: Africa, described from South Africa. (See ETYFish).
More on author: Gmelin.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien demersaal; diepte 0 - 100 m (Ref. 5510). Subtropical; 28°S - 36°S
Southeast Atlantic: endemic to South Africa (Ref. 12484). There are old records from Madagascar and Mauritius, but these require confirmation (Ref. 244).
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm 68.5, range 65 - 72 cm
Max length : 101 cm TL mannelijk / geslacht onbekend; (Ref. 244); 93.0 cm TL (female)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 0; Anale stekels: 0. A large catshark with short nasal barbels and long horizontal black stripes (Ref. 5578).
Occurs in the continental shelf, both inshore and offshore (Ref. 5578). Prefers rocky reefs from the intertidal zone down to 100 m depth (Ref. 5578). Nocturnal, often found in caves and crevices during the day (Ref. 5578). Feeds mainly on crustaceans, but also bony fish and cephalopods (Ref. 244). Oviparous (Ref. 50449). Readily kept in captivity (Ref. 244).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Oviparous, with a single egg-case per oviduct (Ref. 244). Embryos feed solely on yolk (Ref. 50449). Size at hatching between 14 and 15 cm.
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: visserij voor eigen gebruik; sportvis: ja
Tools
Speciale rapporten
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Internetbronnen
Estimates based on models
Preferred temperature (Ref.
123201): 16.2 - 22, mean 19 °C (based on 20 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00157 - 0.00504), b=3.22 (3.06 - 3.38), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.6 ±0.5 se; based on diet studies.
Weerstandsvermogen (Ref.
120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): High vulnerability (61 of 100).
Nutrients (Ref.
124155): Calcium = 20.9 [3.6, 115.7] mg/100g; Iron = 0.674 [0.178, 1.992] mg/100g; Protein = 18.3 [15.2, 21.4] %; Omega3 = 0.166 [0.072, 0.366] g/100g; Selenium = 22.6 [6.9, 64.6] μg/100g; VitaminA = 8.49 [2.90, 24.19] μg/100g; Zinc = 0.614 [0.294, 1.120] mg/100g (wet weight);
