Metchnikovella dobrovolskiji sp.nov

Q3 Agricultural and Biological Sciences Protistology Pub Date : 2022-01-01 DOI:10.21685/1680-0826-2022-16-3-7
E. Frolova, G. Paskerova, A. Smirnov, E. Nassonova
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引用次数: 1

摘要

摘要在白海坎大拉沙湾沿岸地区采集的多毛纲线虫(polychaetes Pygospio elegans)中,发现了多毛纲线虫(archigregarine selenium pygospionis)孢子囊和游离孢子。孢子囊的形态表明该种属于Metchnikovella属(sensu Caullery and Mesnil, 1914)。孢子囊的长度为5.6 ~ 9.2µm,孢子囊的宽度为3.3 ~ 5µm,每个孢子囊最多含有12个卵圆形孢子。孢子囊和游离孢子均包裹在液泡中。形态特征和寄主范围的结合使所研究的分离物区别于任何已知的物种。基于SSU rRNA基因的系统发育分析结果表明,该物种的序列与所有现有的metchnikovellids序列有显著差异,通常与Metchnikovella incurvata类群相近或形成一个分支。本文将所研究的分离物描述为一个新种,Metchnikovella dobrovolskiji sp. nov(微孢子虫目:Metchnikovellida)。
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Metchnikovella dobrovolskiji sp. nov. (Microsporidia: Metchnikovellida), a parasite of archigregarines Selenidium pygospionis from the polychaete Pygospio elegans
Summary Spore sacs and free spores of a metchnikovellid were found in several specimens of the archigregarine Selenidium pygospionis isolated from polychaetes Pygospio elegans , collected from the littoral area of the Kandalaksha Gulf of the White Sea. The morphology of spore sacs suggests that this species belongs to the genus Metchnikovella ( sensu Caullery and Mesnil, 1914). The length of the spore sacs varied from 5.6 to 9.2 µm, the width of the spore sacs was 3.3–5 µm, each of them contained up to 12 oval spores. Both spore sacs and free spores were enclosed in vacuoles. The combination of morphological features and host range distinguishes the studied isolate from any known species. Results of the phylogenetic analysis based on the SSU rRNA gene showed that the sequence of this species had a significant difference from all available sequences of metchnikovellids and usually grouped close to the species Metchnikovella incurvata or formed a clade with it. Here we describe the studied isolate as a new species, Metchnikovella dobrovolskiji sp. nov. (Microsporidia: Metchnikovellida).
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来源期刊
Protistology
Protistology Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
1.50
自引率
0.00%
发文量
5
期刊介绍: Protistology is one of the five "organism-oriented" journals for researchers of protistan material. The Journal publishes manuscripts on the whole spectrum of lower Eukaryote cells including protozoans, lower algae and lower fungi. Protistology publishes original papers (experimental and theoretical contributions), full-size reviews, short topical reviews (which are supposed to be somewhat "provocative" for setting up new hypotheses), rapid short communications, book reviews, symposia materials, historical materials, obituary notices on famous scientists, letters to the Editor, comments on and replies to published papers. Chronicles will present information about past and future scientific meetings, conferences, etc. THE PECULIARITIES OF THE JOURNAL - reviews, overviews and theoretical manuscripts on systematics, phylogeny, evolution and ecology of protists are favourably accepted - the manuscripts on multicellular organisms concerning their phylogenetic and taxonomic relationships with protists are also accepted - the size of manuscripts is usually not limited
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