On the taxonomic status of Eumicrotremus eggvinii Koefoed, 1956, Eumicrotremus phrynoides Gilbert et Burke, 1912 and Lethotremus muticus Gilbert, 1896 (Cyclopteridae, Cottoidei) in the light of data on the morphological variability of Eumicrotremus pacificus Schmidt, 1904Proceedings of the Zoological Institute RAS, 2019, 323(4): 533–540 · https://doi.org/10.31610/trudyzin/2019.323.4.533 Abstract A comparison was performed of the morphological variability of the spotted lumpsucker Eumicrotremus pacificus Schmidt, 1904, E. spinosus (Fabricius, 1776), whose synonymy recently included E. eggvinii Koefoed, 1956, and E. gyrinops sensu Stevenson et al., 2017, recently established as the senior synonym for E. phrynoides Gilbert et Burke, 1912 and Lethotremus muticus Gilbert, 1896. Based on a number of morphological differences between E. spinosus and E. eggvinii, corresponding to differences between young and spawning males E. pacificus, it was suggested that individuals E . eggvinii may be nesting males of E. spinosus. It was established that the range of variability of a number of morphological characters of E. gyrinops exceeds that of E. pacificus, which suggests its complex nature. Notable differences in the ratio of the size of the anterior and posterior nostrils, the size of the chin tubes of the seismosensory system and the shape of bone plaques between E. phrynoides and E. gyrinops indicate the validity of E. phrynoides. The absence of an external skeleton in both males and females of L. muticus, unlike other species of the genus Eumicrotremus, allows us to conclude that L. muticus is also a valid species. Key words Cyclopteridae, fishes, morphology, systematics Submitted October 9, 2019 · Accepted November 20, 2019 · Published December 26, 2019 References Byrkjedal I., Rees D.J. and Willassen E. 2007. Lumping lumpsuckers: molecular and morphological insights into taxonomic status of Eumicrotremus spinosus (Fabricius, 1776) and Eumicrotremus eggvinii Koefoed, 1956 (Teleostei: Cyclopteridae). Journal of Fish Biology, 71: 111–131. https://doi.org/10.1111/j.1095-8649.2007.01550.x Gilbert C.H. and Burke C.V. 1912. Fishes from Bering Sea and Kamchatka. Bulletin of the Bureau of Fisheries, 30: 31−96. Kai Y., Stevenson D.E., Ueda, Y., Hamatsu T. and Nakabo T. 2015. Molecular insights into geographic and morphological variation within the Eumicrotremus asperrimus species complex (Cottoidei: Cyclopteridae). Ichthyological Research, 62: 396–408. https://doi.org/10.1007/s10228-014-0453-4 Lee S.J., Kim J.-K., KA Y., Ikeguchi S. and Nakabo T. 2017. Taxonomic review of dwarf species of Eumicrotremus (Actinopterygii: Cottoidei: Cyclopteridae) with descriptions of two new species from the western North Pacific. Zootaxa, 4282: 337–349. https://doi.org/10.11646/zootaxa.4282.2.7 Mecklenburg M.W., Mecklenburg T.A. and Thorsteinson L.K. 2002. Fishes of Alaska. American Fisheries Society, Bethesda, Maryland, 1037 p. Mecklenburg K.C., P.R. Møller and D. Steinke, 2011. Biodiversity oif the Arctic marine fishes: taxonomy and zoogeography. Marine Biodiversity, 41: 109–140. https://doi.org/10.1007/s12526-010-0070-z Mecklenburg C.W., Mecklenburg T.A., Sheiko B.A. and Steinke D. 2016. Pacific Arctic Marine Fishes. Conservation of Arctic Flora and Fauna, Akureyri, Iceland, 377 p. (CAFF Monitoring Series Report. No. 23). Parin N.V., Evseenko S.A. and Vasileva E.D. 2014. Fishes of Russian Seas. Annotated Catalogue. Archives of Zoological Museum of the Moscow Lomonosov State University. 53. KMK Scientific Press, Moscow, 733 p. [In Russian]. Stevenson D., Mecklenburg K.V. and Kai Y. 2017. Taxonomic clarification of the Eumicrotremus asperrimus species complex (Teleostei: Cyclopteridae) in the eastern North Pacific. Zootaxa, 4294: 419–435. https://doi.org/10.11646/zootaxa.4294.4.2 Ueno T. 1970. Fauna Japonica: Cyclopteridae (Pisces). Academy Press Japan, Tokyo, 233 p. Voskoboinikova O.S. 2018. The redescription of Eumicrotremus brashnikowi with remarks on validity of E. phrynoides (Cyclopteridae, Cottoidei). Journal of Ichthyology, 58: 275–282. https://doi.org/10.1134/S0042875218040173 Voskoboinikova O.S. and A.A. Balanov. 2019. Morphological variability of spotted lumpfish Eumicrotremus Pacificus (Cottoidei, Cyclopteridae). Journal of Ichthyology, 59: 656–663. https://doi.org/10.1134/S0042875219050230 Voskoboinikova O.S. and Chernova, N.V. 2016. Revalidation of the Eggvin lumpsucker Eumicrotremus eggvinii (Cyclopteridae) and its new finding near Franz Josef Land (Barents Sea). Journal of Ichthyology, 56: 31–36. https://doi.org/10.1134/S0032945216010161 Voskoboinikova O.S. and Nazarkin, M.V. 2015. Redescription of Andriashev’s spiny pimpled lumpsucker Eumicrotremus andriashevi and designation of a new subspecies E. andriashevi aculeatus ssp. n. (Cyclopteridae). Journal of Ichthyology, 55: 155–161. https://doi.org/10.1134/S0032945215020174
|
|
© Zoological Institute of the Russian Academy of Sciences
|
