Holohalaelurus melanostigma, Crying Izak

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Holohalaelurus melanostigma (Norman, 1939)

Crying Izak
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Image of Holohalaelurus melanostigma (Crying Izak)
No image available for this species;
drawing shows typical species in Pentanchidae.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Pentanchidae (Deepwater catsharks)
Etymology: Holohalaelurus: holos (Gr.), whole or entire, i.e., being a form of Halaeurus without any labial folds or grooves in the mouth. (See ETYFish);  melanostigma: melanos (Gr.), black; stigma (Gr.), mark or spot, probably referring to dark-colored spots on dorsal surface. (See ETYFish).
More on author: Norman.

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

seewasser bathydemersal; tiefenbereich 607 - 658 m (Ref. 75585). Tropical; 4°S - 5°S (Ref. 75585)

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Western Indian Ocean: northern Tanzania and southern Kenya.

Size / Gewicht / Alter

Maturity: Lm ?  range ? - 38.4 cm
Max length : 38.4 cm TL Männchen/unbestimmt; (Ref. 75585)

Kurzbeschreibung Morphologie | Morphometrie

This moderately sized shark is distinguished from its congeners by the following characters: denticles on dorsal midline slightly enlarged, from a point level to the pectoral origin on the dorsal midline to the first dorsal origin; no enlarged denticles on the dorsal surface of the pectoral fin; no club-shaped papillae on the distal tip of the clasper; buccal papillae in mouth inconspicuous; moderate to high vertebral count, 121 total in the holotype 115 and 119 (mean 116.8) for the paratypes; relatively high tooth counts, 57 total upper teeth in the holotype (54, 59, mean 57.8 for the paratypes), 50 total lower teeth in the holotype (49, 63, mean 55.8 for the paratypes); large brown spots, stripes and blotches on a dull grey-brown background; a distinct tear line marking from the anterior of the orbit to the lateral margin of the snout; white spots absent (Ref. 75585).

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Hauptreferenz Upload your references | Referenzen | Koordinator | Partner

Human, B.A., 2006. A taxonomic revision of the catshark genus Holohalaelurus Fowler 1934 (Chondrichthyes: Carcharhiniformes: Scyliorhinidae), with descriptions of two new species. Zootaxa 1315:1-56. (Ref. 75585)

IUCN Rote Liste Status (Ref. 130435)

  nicht bedroht (LC) ; Date assessed: 24 April 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

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Mehr Information

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Otoliths
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Tools

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Internet Quellen

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher Einträge suchen | CISTI | Catalog of Fishes: Gattung, Arten | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: Genom, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Gehe zu, Suchen | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00176 - 0.00714), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.1   ±0.6 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref. 120179):  niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Preliminary low fecundity).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (28 of 100).