Abstract
The development of bony skeleton is studied in the ontogeny of lumpfish Cyclopterus lumpus. In general, the sequence of appearance of the bony elements is similar to that in other teleost fishes with the exclusion of the absence of the basihyal anlage and the presence of only cartilaginous basibranchials in all examined larvae and juveniles. Bony elements of the ventral sucking disc appear very early (together with the parasphenoid, maxilla, opercle, and cleithrum), and they are characterized by rapid development. The intercalar is observed in the neurocranium of the larvae. In late larvae and in juveniles, the anlage of the medial extrascapular fused with the parietal and the lateral extrascapular attached to the pterotic are registered. C. lumpus differs from Cyclopsis tentacularis and the species of the genus Eumicrotremus in the presence of the cutting in the upper margin of the ceratohyal instead of the berycoid opening. The larvae and juveniles of C. lumpus and C. tentacularis are characterized by the presence of a reduced spiny ray at the origin of the second dorsal fin, most likely, representing a plesiomorphy of the Cyclopteridae. In the larvae of C. lumpus and C. tentacularis of a similar size, the degree of development of skeletal elements is the same, which suggests a similar developmental rate of their skeletal elements.
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Original Russian Text © O.S. Voskoboinikova, O.Yu. Kudryavtseva, 2014, published in Voprosy Ikhtiologii, 2014, Vol. 54, No. 3, pp. 251–260.
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Voskoboinikova, O.S., Kudryavtseva, O.Y. Development of bony skeleton in the ontogeny of lumpfish Cyclopterus lumpus (Cyclopteridae, Scorpaeniformes). J. Ichthyol. 54, 301–310 (2014). https://doi.org/10.1134/S0032945214030163
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DOI: https://doi.org/10.1134/S0032945214030163