Eumicrotremus derjugini, Leatherfin lumpsucker

Eumicrotremus derjugini Popov, 1926

Leatherfin lumpsucker
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Eumicrotremus derjugini   AquaMaps   Data sources: GBIF OBIS
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Image of Eumicrotremus derjugini (Leatherfin lumpsucker)
Eumicrotremus derjugini
Photo von Byrkjedal, I.

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

> Perciformes/Cottoidei (Sculpins) > Cyclopteridae (Lumpfishes) > Eumicrotreminae
Etymology: Eumicrotremus: Greek, eu = good + Greek, mikros = little, small + Greek, trema = hole (Ref. 45335).
Eponymy: Professor Dr Konstantin Michailovich Derjugin (1878–1938) was an oceanographer and marine zoologist at Leningrad State University, and manager of the Oceanic Division of the State Hydrological Institute in Leningrad. [...] (Ref. 128868), visit book page.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

seewasser demersal; tiefenbereich 5 - 1038 m (Ref. 117245), usually 5 - 575 m (Ref. 123372). Polar; 84°N - 50°N, 180°W - 180°E (Ref. 117245)

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Arctic Ocean: Barents-Laptev Sea and the Beaufort Sea-Greenland. Barents Sea (except southwestern part while in the northern areas, it can be found up to Spitsbergen and Franz Josef Land); Kara Sea (reaches 80°32N); Laptev Sea (eastwards to 77°46N 131°52E; Beaufort Sea (waters of the Canadian Arctic Arch., in the Hudson Bay and Baffin Bay off the shores of the Baffin Island); eastern Greenland (northwards to the Danish Harbor). The southern boundary of the range in the North-West Atlantic is 60°N.

Größe / Gewicht / Alter

Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 12.7 cm TL Männchen/unbestimmt; (Ref. 43939)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 6 - 8; Rückenflossenweichstrahlen (insgesamt) : 10 - 13; Afterflossenweichstrahlen: 10 - 13. This species is distinguished by the following characters: first dorsal fin in the form of dense leathery process, does not bend down to the back, trapezoidal in shape; fish 4.0-8.5 cm TL, usually have seven rows of bony plaques in interorbital region; plaques in periorbital and preopercular rows are numerous; bare space in anus area bounded by semicircle of (6) 7-10 bony plaques; number of plaques on body and head (circumpectoral, postbranchial, supraorbital and postorbital, middle and interorbital rows) on average 32.7; distance from anus to beginning of anal fin on average 22% SL; pectoral fin short, on average 50–51% HL. Colouration: when alive (in Laptev Sea), body almost black, with slightly purple tint; without pronounced spots and stripes; lower side of head is dark, rays of D2, A, and P are dark gray; translucent fin membranes D2 and A are not colored; skin under upper caudal row of plaques light; it is a continuous dark band below it; bases of A and C with light spots; belly silvery; peritoneum (inner surface of abdominal cavity) is not pigmented; lining of oral cavity light, dotted (Ref. 123372).
Body shape (shape guide): short and / or deep; Cross section: circular.

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

Found on mud, gravel or stone bottoms at temperatures below 0° C, with the young occuring in shallower water (Ref. 4701). A benthic species feeding on crustaceans and oikopleura (Ref. 58426). This species usually occurs at depths from 5 to 575 m at high water salinity (34-35 psu), with water temperatures below zero (down to -2.0°С). Recorded in Baffin Bay, down to 1038 m, and the Canadian Arctic at water temperature up to +4.93°C; Barents–Laptev Sea region, usually at the depths from 6 to 280 m, at low (from -1.9° to +1.8°C) mostly negative water temperatures and high salinity (34.03-35.25 psu), often on silt or clay sediments. In the Olenek and Lena rivers' shoals, it is found in the waters with a reduced oxygen content (86-88%), on brown-black sediments, often with a pronounced odor of hydrogen sulfide. It has never been found in the pelagic trawls. The reproduction in the Barents–Laptev Sea region probably takes place in the autumn-winter period, since the females with mature eggs (4-5 mm) are caught in the autumn. In July, the female (6.3 cm TL) from the Barents Sea had immature eggs (<1.3 mm) in the ovaries. An individual (8.5 cm TL) caught in October was with large eggs (up to 4 mm). A female (8.2 cm TL) caught on September 1, 1980, southeast of Franz Josef Land (79°46 N, 63°08 E) was with large mature eggs. In the collections from the Laptev Sea performed in September, the diameter of the eggs in mature females (8.5-10.1 cm TL) was up to 3.5-5.0 mm (IV stage of maturity). For the Canadian Arctic, spawning is reported in late summer and autumn (Ref. 123372).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven

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Chernova, N.V., O.S. Voskoboinikova, O.Yu. Kudryavtseva, S.Yu. Orlova, O.A. Maznikova and A.M. Orlov, 2019. Taxonomic status of the Okhotsk lumpsucker Eumicrotremus ochotonensis (Cyclopteridae, Cottoidei) with redescription of E. derjugini. J. Ichthyol. 59(3):289-306. (Ref. 123372)

IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

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Schätzungen auf der Grundlage von Modellen

Phylogenetischer Diversitätsindex
(Ref. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.02089 (0.00771 - 0.05664), b=3.03 (2.80 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophische Ebene
(Ref. 69278) 		3.3   ±0.34 se; based on food items.
Widerstandsfähigkeit
(Ref. 120179) 		mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Fecundity assumed < 1000).
Anfälligkeit der Fischerei
(Ref. 59153) 		Low vulnerability (14 of 100). 🛈