Journal of Ichthyology

, Volume 59, Issue 3, pp 289–306 | Cite as

Taxonomic Status of the Okhotsk Lumpsucker Eumicrotremus ochotonensis (Cyclopteridae, Cottoidei) with Redescription of E. derjugini

  • N. V. ChernovaEmail author
  • O. S. Voskoboinikova
  • O. Yu. Kudryavtseva
  • S. Yu. Orlova
  • O. A. Maznikova
  • A. M. Orlov


The species status is justified for the Okhotsk lumpsucker Eumicrotremus ochotonensis based on the morphological characters. The differences from the closely related species E. derjugini inhabiting the Arctic Ocean are given. Two species were redescribed basing on type series, their diagnoses were clarified, and the lectotypes were designated. Intraspecific variability is discussed using new materials from the Barents, Kara, Laptev, and Okhotsk seas. The two species differ markedly in a complex of morphological features (shape of the submerged dorsal fin, proportions of the body, number and location of bony plaques) and characteristics of biology (spawning season). The modern disjunction of the ranges of E. ochotonensis and E. derjugini covers the Bering, East Siberian, and Chukchi seas. Sequence analysis of the cytochrome oxidase (COI) gene fragment of mtDNA revealed differences in the haplotypic diversity of the two species. Weak genetic divergence between species indicates a relatively recent isolation of E. derjugini and confirms its status of the evolutionary young species.


lumpsucker Eumicrotremus derjugini Eumicrotremus ochotonensis Cyclopteridae Arctic Sea of Okhotsk 



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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • N. V. Chernova
    • 1
    Email author
  • O. S. Voskoboinikova
    • 1
  • O. Yu. Kudryavtseva
    • 2
  • S. Yu. Orlova
    • 3
  • O. A. Maznikova
    • 3
  • A. M. Orlov
    • 3
    • 4
    • 5
    • 6
    • 7
  1. 1.Zoological Institute, Russian Academy of Sciences (ZIN RAS)St. PetersburgRussia
  2. 2.Murmansk Marine Biological Institute, Kola Scientific Center, Russian Academy of Sciences (MMBI)MurmanskRussia
  3. 3.Russian Research Institute of Fisheries and Oceanography (VNIRO)MoscowRussia
  4. 4.Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences (IEE RAS)MoscowRussia
  5. 5.Dagestan State University (DSU)MakhachkalaRussia
  6. 6.Pricaspian Institute of Biological Resources, Dagestan Scientific Center, Russian Academy of Sciences (PIBR DSC RAS)MakhachkalaRussia
  7. 7.Tomsk State UniversityTomskRussia

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