Differentiation of the Arctic Sculpin Myoxocephalus scorpioides (Fabricius, 1780) and its position among species of the genus Myoxocephalus (Cottidae)

IF 1.5 3区生物学 Q2 ZOOLOGY

Zoologischer Anzeiger Pub Date : 2025-01-01 DOI:10.1016/j.jcz.2024.12.008

Irina N. Moreva , Olga A. Radchenko , Anna V. Petrovskaya

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Abstract

The phylogenetic position of the Arctic Sculpin Myoxocephalus scorpioides from the East Arctic was determined using molecular genetics and karyological methods. This study presents the first data on the mitochondrial DNA genes of this species from the East Siberian Sea, whose haplotype contains 32 species-specific nucleotide substitutions. Moreover, it is the first to report the karyotype of the species, which is comprised of 42 chromosomes and 44 chromosome arms. Phylogenetic analysis revealed that the Arctic Sculpin is positioned in one of the two Myoxocephalus groups, together with Myoxocephalus quadricornis and Megalocottus platycephalus as well as with M. aenaeus and M. octodecemspinosus. The position of M. scorpioides confirms the non-monophyletic relationships of the genus Myoxocephalus. The results of this study indicate that the genera Myoxocephalus and Megalocottus need to be revised.

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北极扇形鱼Myoxocephalus scorpioides （Fabricius, 1780）的分化及其在Myoxocephalus属（cotidae）种中的地位

利用分子遗传学和核生物学方法，确定了来自北极东部的北极Sculpin Myoxocephalus scorpioides的系统发育位置。本研究首次获得了东西伯利亚海该物种线粒体DNA基因的数据，该物种的单倍型包含32个物种特异性核苷酸替换。此外，首次报道了该物种的核型，由42条染色体和44条染色体臂组成。系统发育分析显示，Arctic Sculpin与Myoxocephalus quadricornis和Megalocottus platycephalus以及M. aenaeus和M. octodecemspinosus一起被定位在两个Myoxocephalus类群中的一个。M. scorpioides的位置证实了Myoxocephalus属的非单系关系。本研究结果表明，肌头属和巨头足属有待修订。

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来源期刊

Zoologischer Anzeiger 生物-动物学

CiteScore

2.80

自引率

7.10%

发文量

审稿时长

>12 weeks

期刊介绍： Zoologischer Anzeiger - A Journal of Comparative Zoology is devoted to comparative zoology with a special emphasis on morphology, systematics, biogeography, and evolutionary biology targeting all metazoans, both modern and extinct. We also consider taxonomic submissions addressing a broader systematic and/or evolutionary context. The overall aim of the journal is to contribute to our understanding of the organismic world from an evolutionary perspective. The journal Zoologischer Anzeiger invites suggestions for special issues. Interested parties may contact one of the editors.