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Abstract <p>The karyotypes of the sailfin sculpins <i>Blepsias bilobus</i> and <i>B. cirrhosus</i> were studied for the first time and the chromosome set of <i>Hemitripterus villosus</i> was analyzed. It was found that the karyotypes of these species are stable and consist of 46 chromosomes (2n) in <i>H. villosus</i>: 4 metacentric (M), 32 subtelocentric (ST), and 10 acrocentric (A); the number of chromosome arms (NF) is 50. In <i>Blepsias bilobus</i>, the chromosome set is 2<i>n</i> = 48 (34 ST and 14 A chromosomes), NF = 48; in <i>B. cirrhosus</i>, 2<i>n</i> = 48 (36 ST and 12 A chromosomes), NF = 48. Based on comparative karyological analysis, common features were identified that confirm the close relationships between <i>B. bilobus</i> and <i>B. cirrhosus</i>, and the taxonomic proximity of <i>H. villosus</i> to species of the genus <i>Blepsias</i>. The features that allow differentiation of the studied species were also determined.</p>

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The Karyotypes of the Sailfin Sculpins Hemitripterus villosus (Pallas, 1814), Blepsias cirrhosus (Pallas, 1814), and B.bilobus Cuvier, 1829 (Actinopterygii: Hemitripteridae)

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • I. N. Moreva,
  • O. A. Radchenko

摘要

Abstract

The karyotypes of the sailfin sculpins Blepsias bilobus and B. cirrhosus were studied for the first time and the chromosome set of Hemitripterus villosus was analyzed. It was found that the karyotypes of these species are stable and consist of 46 chromosomes (2n) in H. villosus: 4 metacentric (M), 32 subtelocentric (ST), and 10 acrocentric (A); the number of chromosome arms (NF) is 50. In Blepsias bilobus, the chromosome set is 2n = 48 (34 ST and 14 A chromosomes), NF = 48; in B. cirrhosus, 2n = 48 (36 ST and 12 A chromosomes), NF = 48. Based on comparative karyological analysis, common features were identified that confirm the close relationships between B. bilobus and B. cirrhosus, and the taxonomic proximity of H. villosus to species of the genus Blepsias. The features that allow differentiation of the studied species were also determined.