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Abstract <p>The karyotypes of <i>G. pistilliger</i>, <i>G. herzensteini</i>, and <i>G. intermedius</i> (from the western and northern Sea of Japan) were studied for the first time, and their chromosomes were subjected to Ag staining. The karyotype of <i>G. herzensteini</i> was found to be stable (2<i>n</i> = 42, <i>NF</i> = 50). Intraspecific variability was revealed in <i>G. pistilliger</i> (2<i>n</i> = 50/49, <i>NF</i> = 50) and <i>G. intermedius</i> (2<i>n</i> = 44, <i>NF</i> = 50/48) caused by Robertsian translocation and pericentric inversion and associated with the geographic distribution of the species. Active nucleolar organizers in all species are localized to the telomeric regions of the short arms of homologous subtelocentric chromosomes. Similar karyotype features were determined with the highest number of them found in <i>G. intermedius</i> and <i>G</i>. <i>herzensteini</i>. Species-specific chromosomal features were determined providing differentiation between <i>G. pistilliger</i>, <i>G. herzensteini</i>, and <i>G. intermedius</i>.</p>

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Variability and Relationships of the Sculpins Gymnocanthus pistilliger, G. intermedius and G. herzensteini (Cottidae) Based on Karyological Analysis

  • 期刊论文

  • 发表日期：

    2026年4月15日

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  • I. N. Moreva,
  • O. A. Radchenko

摘要

Abstract

The karyotypes of G. pistilliger, G. herzensteini, and G. intermedius (from the western and northern Sea of Japan) were studied for the first time, and their chromosomes were subjected to Ag staining. The karyotype of G. herzensteini was found to be stable (2n = 42, NF = 50). Intraspecific variability was revealed in G. pistilliger (2n = 50/49, NF = 50) and G. intermedius (2n = 44, NF = 50/48) caused by Robertsian translocation and pericentric inversion and associated with the geographic distribution of the species. Active nucleolar organizers in all species are localized to the telomeric regions of the short arms of homologous subtelocentric chromosomes. Similar karyotype features were determined with the highest number of them found in G. intermedius and G. herzensteini. Species-specific chromosomal features were determined providing differentiation between G. pistilliger, G. herzensteini, and G. intermedius.