Abstract
An unusual mutation affecting gills of two Antarctic species, Channichthys rhinoceratus Richardson (Channichthyidae) and Pogonophryne scotti Regan (Artedidraconidae) has been described. This mutation, called “dolichobranchiata,” is characterized by an increase in the number and length of primary gill filaments, as well as variations in their shape. Comparison with the more primitive notothenians out of the families Eleginopsidae and Nototheniidae has made it possible to qualify this mutation as a spontaneous type of reversion or phylogenetic atavism.
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Original Russian Text © A.V. Balushkin, E.A. Nikolaeva, 2015, published in Voprosy Ikhtiologii, 2015, Vol. 55, No. 1, pp. 11–17.
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Balushkin, A.V., Nikolaeva, E.A. “Dolichobranchiata” mutation in the Antarctic representatives from the families of plunderfishes (Artedidraconidae) and white-blooded (Channichthyidae) fish (Notothenioidei). J. Ichthyol. 55, 9–15 (2015). https://doi.org/10.1134/S0032945215010014
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DOI: https://doi.org/10.1134/S0032945215010014