Taxonomic revision of Phoxinus minnows (Leuciscidae) from Caucasus, with description of a new narrow-ranged endemic species

IF 1.6 2区生物学 Q2 ZOOLOGY

Zoosystematics and Evolution Pub Date : 2024-03-20 DOI:10.3897/zse.100.115696

Oleg N. Artaev, I. Turbanov, A. Bolotovskiy, Aleksandr A. Gandlin, Boris A. Levin

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引用次数: 0

Abstract

Taxonomic revision of Phoxinus from the Caucasus revealed two distinct species. One species, P. colchicus, was known from eastern drainage of Black Sea, but was recorded also in the middle reach of the Kuban (Sea of Azov basin), for the first time. The Kuban population represents a genetically unique sub-lineage of P. colchicus. Its ancestors might have colonized the Kuban system through the event of ancient river capture. Another species inhabits only the Adagum River basin in the lower Kuban and represents a new narrow-ranged endemic species – Phoxinus adagumicus sp. nov. According to mtDNA phylogeny (COI and cytb), P. adagumicus sp. nov. represents deeply divergent and one of the two early branched lineages of the genus Phoxinus being distant to other species (min. p-distance = 0.074) including geographical neighbors – P. chrysoprasius from Crimean Peninsula and P. colchicus from the Caucasus. The new species differs from most Phoxinus species by frequently occurring single-row pharyngeal teeth (modal formula 5–4). The narrow geographic range (ca. 55 km in length and 15–20 km in width) and high anthropogenic load on local water systems suggests the new species is under threat and needs protection.

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高加索地区 Phoxinus 鲦鱼（鯈鱼科）的分类修订，并描述了一个新的窄范围特有物种

对高加索地区Phoxinus的分类修订发现了两个不同的物种。其中一个物种，P. colchicus，已知产于黑海东部流域，但在库班河中游（亚速海盆地）也首次有记录。库班种群代表了 P. colchicus 在遗传学上的一个独特亚系。它的祖先可能是通过古代河流捕获事件而在库班水系定居的。另一个物种仅栖息于库班河下游的阿达古姆河流域，是一个新的窄范围特有物种--阿达古姆麝（Phoxinus adagumicus sp.根据mtDNA系统发育（COI和cytb），P. adagumicus sp.该新种与大多数 Phoxinus 种类的不同之处在于经常出现单排咽齿（模态公式 5-4）。狭窄的地理范围（长约 55 千米，宽约 15-20 千米）和当地水系的高人为负荷表明该新物种正受到威胁，需要保护。

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来源期刊

Zoosystematics and Evolution ZOOLOGY-

CiteScore

3.50

自引率

5.00%

发文量

审稿时长

16 weeks

期刊介绍： Zoosystematics and Evolution, formerly Mitteilungen aus dem Museum für Naturkunde in Berlin, is an international, open access, peer-reviewed life science journal devoted to whole-organism biology. It publishes original research and review articles in the field of Metazoan taxonomy, biosystematics, evolution, morphology, development and biogeography at all taxonomic levels. The journal''s scope encompasses primary information from collection-related research, taxonomic descriptions and discoveries, revisions, annotated type catalogues, aspects of the history of science, and contributions on new methods and principles of systematics. Articles whose main topic is ecology, functional anatomy, physiology, or ethology are only acceptable when of systematic or evolutionary relevance and perspective.