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Myctophiformes (Lanternfishes) >
Myctophidae (Lanternfishes) > Myctophinae
Etymology: Krefftichthys: Named for Dr. Gerhard Krefft (Institut fur Seefischerei, Hamburg) for his pioneering work and contributions to the knowledge of deep-sea fishes.
Eponymy: Dr Gerhard Krefft (1912–1993) was a German ichthyologist and herpetologist whose great uncle was Johann Ludwig Gerard Krefft (below). [...] Karl Andreas Andersson (1875–1968) was the zoologist of the Swedish Antarctic Expedition led by Otto Nordenskjöld (1902–1903). [...] (Ref. 128868), visit book page.
More on author: Lönnberg.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien bathypelagisch; oceanodroom (Ref. 51243); diepte ? - 2700 m (Ref. 58018). Deep-water; 32°S - 78°S
Ranges from the Antarctic Divergence/Weddell-Scotia Confluence to the northern boundary limits (usually considered to coincide with the geographic location of the Subtropical Convergence), and further north in meridional currents: to 32°-33°S in Peruvian Current and to 34°S in Falkland Current.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 7.1 cm SL mannelijk / geslacht onbekend; (Ref. 5182)
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 12 - 14; Anale stekels: 0; Anale zachte stralen: 17 - 20.
Oceanic (Ref. 4066). Found in the upper 50-100 m south of Antarctic Polar Front at night, but deeper (500-600 m) north of Antarctic Polar Front and at depths greater than 1,000 m at Subtropical Convergence. Feeds mainly on copepods, and also on euphausiids and amphipods.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Hulley, P.A., 1990. Myctophidae. p. 146-178. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5182)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
Tools
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Estimates based on models
Preferred temperature (Ref.
123201): 0.4 - 7.5, mean 3.1 °C (based on 444 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00293 - 0.01558), b=3.13 (2.93 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.1 ±0.19 se; based on food items.
Generation time: 1.5 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
