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Narcine insolita Carvalho, Séret & Compagno, 2002

Madagascar numbfish
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drawing shows typical species in Narcinidae.

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

Elasmobranchii (Haie und Rochen) (sharks and rays) > Torpediniformes (Electric rays) > Narcinidae (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335);  insolita: Name from Latin 'insolitus' meaning unusual or uncommon; referring to the unusual and unique disparate dimensions of the dorsal fins, treated as an adjective (feminine)..

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

seewasser demersal; tiefenbereich 150 - 175 m (Ref. 93929). Tropical; 15°S - 25°S, 42°E - 45°E (Ref. 114953)

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

Western Indian Ocean: Madagascar.

Length at first maturity / Size / Gewicht / Alter

Maturity: Lm ?  range ? - 35.6 cm
Max length : 35.6 cm TL (female)

Kurzbeschreibung Morphologie | Morphometrie

Wirbelzahl: 119 - 127. This species is distinguished from all its congeners by the following characters: unique presence of a very large and prominent first dorsal fin that is conspicuously taller, larger and with a longer base than the second dorsal fin; large spiracles, conspicuously rounded, not projecting anteriorly lateral to eyes, and with elevated rims all around; interspiracular distance much smaller than interorbital distance; small, broadly rounded lateral cusplets adjacent to principal cusp on teeth of more concealed inner rows; upper and lower tooth bands equal in width and broadly circular in outline; dorsal colouration composed of a yellowish brown background with darker brown to reddish brown irregular blotches on disc margins, posterior disc and anterior margin of snout; darker brown blotches on anterior portion of dorsal and caudal fins, at caudal apex, and laterally on tail at level of dorsal fins; precaudal vertebrae 68-71; total vertebrae 119-127 (Ref. 93929).

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

Usually found over predominantly muddy substrata (Ref. 93929). Maturity size of males at ca. 27 cm TL; birth size at ca. 14 cm TL (Ref. 114953).

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

Hauptreferenz Upload your references | Referenzen | Koordinator : Carvalho, Marcelo | Partner

de Carvalho, M.R., B. Séret and L.J.V. Compagno, 2002. A new species of electric ray of the genus Narcine Henle, 1834 from the South-western Indian Ocean (Chondrichthyes: Torpediniformes: Narcinidae). S. Afr. J. mar. Sci. 24:135-149. (Ref. 93929)

IUCN Rote Liste Status (Ref. 125652)

  Daten mangelhaft (DD) ; Date assessed: 24 April 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

FAO - Publication: search | FishSource |

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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 | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00472 - 0.02924), b=2.88 (2.67 - 3.09), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.1   ±0.3 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref. 120179):  niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Assuming fecundity<100).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (26 of 100).