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Eudontomyzon hellenicus  Vladykov, Renaud, Kott & Economidis, 1982

Greek brook lamprey
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Image of Eudontomyzon hellenicus (Greek brook lamprey)
Eudontomyzon hellenicus
Picture by Kommatas, D.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Cephalaspidomorphi (lampreys) > Petromyzontiformes (Lampreys) > Petromyzontidae (Northern lampreys) > Lampetrinae
Etymology: Eudontomyzon: Greek, eu = good + Greek, odous = teeth + Greek, myzo = to suckle (Ref. 45335);  hellenicus: The specific epithet refers to Greece as the species' present distribution.

Issue
Possibly in the genus Caspiomyzon following the placement in Lang et al. (2009: Ref. 89370). The population from Louros drainage (eastern Greece) either belongs to Eudontomyzon stankokaramani or is a distinct undescribed species (Ref. 59043). Recently (Renaud and Economidis 2010) it was found that Eudontomyzon hellenicus is restricted to the Strymon River Basin, Aegean Sea Basin and that the Eudontomyzon species found in the Loúros River Basin, Ionian Sea Basin, in fact is a different and new species, E. graecus (Ref. 89241).

Environment / Climate / Range Ecology

Freshwater; demersal; potamodromous; depth range 0 - 1 m (Ref. 12282).   Temperate; 42°N - 40°N, 23°E - 25°E (Ref. 59043)

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 15.8 cm TL male/unsexed; (Ref. 12282); max. published weight: 7.40 g (Ref. 12282)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Adults: 9.55-15.85 cm TL. Body proportions, as percentage of TL (based on 66 specimens measuring 9.55-15.85 cm TL): prebranchial length, 8.4-13.1; branchial length, 9.5-12.4; trunk length, 46.4-54.7; tail length, 26.2-33.0; cloacal slit length, 0.6-2.0; eye length, 1.3-2.1; disc length, 2.9-7.3; prenostril length, 3.6-7.3; snout length, 4.4-8.9; postocular length, 2.3-3.8. The intestinal diameter, <0.05- 0.10 cm. The urogenital papilla length, as a percentage of branchial length, in eight spawning males measuring 9.6-13.3 cm TL, 3.3-9.1. Trunk myomeres, 53-63. Dentition: All labial teeth are pavement-like; supraoral lamina, 2 teeth, usually unicuspid, but one or both may be bicuspid; infraoral lamina, 7-11 teeth; typically 3 endolateral teeth on each side, but 4 teeth also occur (6 cases out of 96); endolateral formula, typically 2-2-2, but variant formulae occur in 25% of cases and each of the teeth can be either uni-, bi-, or tricuspid; 3-4 rows of anterials; first row of anterials, 4-8 teeth; 2-6 rows of exolaterals on each side; 1-4 rows of posterials; first row of posterials, 10-15 teeth; transverse lingual lamina with a greatly enlarged median tooth but no lateral teeth; longitudinal lingual laminae without teeth. Additonally, 9 of 66 adults possessed 1-2 accessory unicuspid teeth inside the ring formed by the supraoral and infraoral laminae and the endolateral teeth. Velar tentacles, 2-5. Body coloration (preserved) in mature adults is gray on the upper surface and flanks and light brown on the lower surface. Lateral line neuromasts unpigmented. Caudal fin pigmentation, + (2% of specimens), ++ (19%) or +++ (79%). Caudal fin shape, rounded (Ref.89241). Gray to black color of the caudal fins (Ref. 59043).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Europe: Endemic to Greece. Known from three creeks in the Struma drainage.

Biology     Glossary (e.g. epibenthic)

A short-lived, freshwater lamprey which lives in shallow, clear, fairly fast-flowing brooks with gravelly substrate, some rocks and aquatic plants (Ref. 26100). At depths of 25-75 cm; also found in mud, especially among the roots of aquatic vegetation (Ref. 89241). Ammocoetes larvae live in detritus-rich sands and clay sediments (Ref. 59043). They are filter feeders on microorganisms, including green algae (Ref. 26100). They are filter feeders on microorganisms, including green algae. Metamorphosis takes place in December (Ref. 26100); occurs between October and January in the Strymon and Loúros River Basins, Greece (Ref. 89241). Adults nonparasitic and are believed to live only 3-4 months. Spawning takes place in December up to May. Its existence is threatened by pollution and water obstruction (Ref. 26100).

Main reference Upload your references | References | Coordinator | Collaborators

Renaud, C.B., 1986. Eudontomyzon hellenicus Vladykov, Renaud, Kott, and Economidis, 1982. p. 186-195. In J. Holcík (ed.) The freshwater fishes of Europe. Petromyzontiformes.

IUCN Red List Status (Ref. 90363)

  Critically Endangered (CR) (B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v))

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: of no interest
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BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00123 (0.00052 - 0.00290), b=2.99 (2.78 - 3.20), based on LWR estimates for this Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  3.5   ±0.37 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (34 of 100) .
Price category (Ref. 80766):   Unknown.