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Eudontomyzon mariae (Berg, 1931)

Ukrainian brook lamprey
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Eudontomyzon mariae
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Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Petromyzontiformes (Lampreys) > Petromyzontidae (Northern lampreys) > Lampetrinae
Etymology: Eudontomyzon: eu-, a Greek intensive (good, well or very); odontos (Gr.) tooth, referring to numerous radially arranged teeth of E. danfordi; myzon (Gr.), to suck (borrowed from Petromyzon), referring to their suctorial behavior. (See ETYFish);  mariae: In honor of Berg’s second wife Maria (née Ivanova), “who examined many thousands of river lampreys from the mouth of the Neva and other streams, falling into the Finnish Gulf”. (See ETYFish).
More on author: Berg.

Issue
This species needs a complete re-evaluation Renaud (2011; Re. 89241:41), and may be a complex of species. Please send references, or more studies are needed.

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

; sötvatten bottenlevande; flodvandrande. Temperate; 57°N - 41°N, 14°E - 49°E (Ref. 59043)

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Europe: Drainages of the Baltic Sea (Odra, Vistula, Neman), northern Black Sea (Sava, Drava, Danube [except Tisza, Timis, and Cerna rivers], Prut, Dnieper, Dniester, Don, Kuban, and in rivers of Georgia from Bzyb' in south to Chorokhi in north), Aegean Sea (Vardar), and Caspian Sea (Volga - Sura River) (Ref. 58030). One record in the upper Morava system (Czechia) (Ref. 59043).

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 22.2 cm TL hane/ej könsbestämd; (Ref. 12283); common length : 18.0 cm TL hane/ej könsbestämd; (Ref. 556); rapporterad maxålder: 7 år (Ref. 12283)

Short description Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 0; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 0. Adults: 12.0-22.2 cm TL. Body wet weight of 37 individuals 13.1-19.5 cm TL, 3.61-12.69 g. Body proportions, as percentage of TL (based on 39 specimens measuring 12.3-19.5 cm TL): prebranchial length, 6.9-12.1; branchial length, 8.5-12.3; trunk length, 44.9-54.4; tail length, 24.3-31.3; cloacal slit length, 0.4-2.2; eye length, 0.7-2.1; disc length, 2.2-5.8; prenostril length, 2.5-6.5; snout length, 2.7-7.6; postocular length, 2.4-3.7. The urogenital papilla length, as a percentage of branchial length, in eight spawning males measuring 14.35-18.4 cm TL, 25.0-38.6. Trunk myomeres, 60-73. Dentition: Most labial teeth are villiform; supraoral lamina, usually only 2 unicuspid teeth, but in less than 10% of cases, 1-3 small unicuspid teeth may also be found on the bridge; infraoral lamina, 5-10 usually unicuspid teeth, but 1-2 lateralmost teeth may be bicuspid; usually 3 endolaterals on each side (83%), but 4 (11%), 1 (4%), and 2 (2%) also found; endolateral formula, typically 1-2-2 (26%), 1-2-1 (22%), 2-2-1 (13%), 2-2-2 (11%), but also 1-1-1, 2-2-3, 1-1-2-2 (each 6%), 2, 1-1-2-1 (each 4%), 1-2, 1-2-2-2 (each 2%) - Naseka et al. (2009) reported the following additional formulae from the syntypic series, including a count of 5 endolaterals: 1-1-2, 1-3-1, 2-1-1, 2-3-2, 1-2-2-1, 2-1-2-2, 1-1-2-1-1; 2-5 rows of anterials; first row of anterials, 5-10 unicuspid teeth, exceptionally, one lateralmost tooth may be bicuspid; 1-4 rows of exolaterals; rows of posterials, 0-3 (absent in 10% of individuals only); first row of posterials, either complete (continuous) with 12-20 unicuspid teeth (62% of individuals) or incomplete (discontinuous) with 1-12 unicuspid teeth (38% of individuals) or entirely absent (very rarely) - Naseka et al. (2009) reported the following additional counts from the syntypic series: complete row with 10 unicuspid and 1 bicuspid teeth; incomplete row with 13-17 unicuspid teeth and with 4 unicuspid and one bicuspid teeth; transverse lingual lamina, 3-7 unicuspid teeth, the median one enlarged (in 79% of individuals, the median cusp is both higher and wider, while in 21% of individuals it is wider, but not noticeably higher, than the flanking cusps); longitudinal lingual laminae each with 5-11 unicuspid teeth. Velar tentacles, 7-12, with tubercles. No dark blotch near the apex of the second dorsal fin. Lateral line neuromasts unpigmented or darkly pigmented, at least on the ventral aspect. Extent of caudal fin pigmentation (- = absence to trace; + = 1% to under 25%; ++ = 25% to under 75%; +++ = 75% or more): - (7%), + (3%), ++ (13%), +++ (77%). Caudal fin shape, spade-like (97% of individuals), rarely rounded. Oral fimbriae, 88-98 (Ref. 89241). With 62-73 trunk myomeres. The caudal fin is dark grey to black (Ref. 59043).

Biologi     Ordlista (t.ex. epibenthic)

Adults are found in freshwater; in brooks, rivers, and lakes (Ref. 89241). They inhabit the mountain and foothill zones of watercourses containing clear water with a strong current and gravel-sand substrate. The ammocoetes larvae live in detritus-rich sand-mud substrates in areas of weak current, frequently beneath overhanging banks. Ammocoetes feed on diatoms and detritus; adults don't feed. Metamorphosis occurs in September in Poland and Slovakia and in July in the Ukraine. Ammocoetes used as live bait (Ref. 12283). Adults are preyed upon by Esox lucius (Ref. 89241), the chub (Leuciscus cephalus) and other predators in the period of their spawning (beginning of May to beginning of June). Mature individuals form spawning aggregations (Ref. 59043). Spawning occurs on gravel and sand substrates, also possibly over hard white clay (Ref. 58030), in late April - early May in the Ukraine. Fecundity, 1,950-7,106 eggs/female (Ref. 89241). Adults are nonparasitic. However, rare cases of ectoparasitism have been reported in Jelesná Brook, Slovakia and the Prut River, Ukraine (Ref. 89241).

Life cycle and mating behavior Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver

Spawning individuals come out in open day light. Males dig a shallow nest in areas with moderate current. Spawners form aggregations. Spawners die afterwards. Ammocoetes last 3.5 to 4.5 years. They metamorphose in September - December (Ref. 59043).

Main reference Upload your references | referenser | Koordinator | Medarbetare

Holcík, J. and C.B. Renaud, 1986. Eudontomyzon mariae (Berg, 1931). p. 165-185. In J. Holcík (ed.) The Freshwater fishes of Europe. Vol.1, Part I, Petromyzontiformes. (Ref. 12283)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 05 March 2010

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: saknar intresse; bete: usually
FAO - Publication: search | FishSource |

Ytterligare information

Trophic ecology
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Internet-källor

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Nationella databaser | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00126 (0.00056 - 0.00284), b=2.99 (2.80 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.7   ±0.6 se; based on size and trophs of closest relatives
Resiliens (Ref. 120179):  Låg, lägsta populationsfördubblingstid 4,5-14 år (Semelparous species, assuming tm (= tmax) > 4).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (31 of 100).