Classificatie / Names
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Gadiformes (Cods) >
Macrouridae (Grenadiers or rattails)
Etymology: Hymenocephalus: Named for its transparent membrane-like head covering (‘‘hymen head’’) and fragile nature of head bones (Ref. 100825); punt: Named for the mythic kingdom of Punt, which was thought to have been historically located in northern Somalia; noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien bathydemersaal; diepte 375 - 530 m (Ref. 98298). Deep-water
Western Indian Ocean: probably limited off the shores of northern Somalia, Yemen and southern Oman.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 16.8 cm TL mannelijk / geslacht onbekend; (Ref. 98298)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 2; Dorsale zachte stralen (totaal) : 8 - 10. This species is distinguished by the following characters: 10-11 pelvic-fin rays;; 14-15 (13) pectoral-fin rays; 20-24 total gill rakers; moderately long barbel, 11-15% HL and reaching vertical through anterior rim of orbit; orbit 28-30% HL; pointed and protruding snout, 17.5-20% HL; ventral striae extending to about ? to ½ the distance from pelvic fin bases to periproct; the otolith moderately compressed (OL:OH = 1.0-1.05); colliculi separated, small; pseudocolliculum small (TCL:PCL = 1.9-2.2) (Ref. 98298).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Schwarzhans, W., 2014. Head and otolith morphology of the genera Hymenocephalus, Hymenogadus and Spicomacrurus (Macrouridae), with the description of three new species. Zootaxa 3888(1):1-73. (Ref. 98298)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00219 (0.00111 - 0.00431), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
