>
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
بوم شناسي
دريايي ناحیه ای از منطقه اقیانوسی با عمق بین 1000 تا 4000 متر. موجوداتی که در آبهای آزاد بین اعماق 1000 تا 4000 متر زندگی و تغذیه می کنند; اقیانوس رو (Ref. 51243); تغييرات عمق ? - 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.
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 7.1 cm SL جنس نر / بدون خواص جنسي; (Ref. 5182)
خارهاي باله پشتي (کل) : 0; شعاع نرم باله پشتي (کل) : 12 - 14; خارهاي باله مخرجي: 0; شعاع نرم باله مخرجي: 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.
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
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)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-1)
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Preferred temperature (Ref.
123201): 0.4 - 7.5, mean 3.1 °C (based on 444 cells).
Phylogenetic diversity index (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).
Trophic level (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.
جهندگی (Ref.
120179): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
