Morphological and molecular characterization of Chloromyxum dasyatidis n. sp. (Myxosporea: Chloromyxidae) in the common stingray Dasyatis pastinaca (Linnaeus) from Tunisian waters (Central Mediterranean Sea).

IF 1 4区医学 Q4 PARASITOLOGY

Systematic Parasitology Pub Date : 2023-12-01 Epub Date: 2023-09-09 DOI:10.1007/s11230-023-10111-6

Luis F Rangel, Amira Elloumi, Yann Quilichini, Maria J Santos, Sihem Bahri

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Abstract

A new species of Chloromyxum Mingazzini, 1890, C. dasyatidis n. sp., is described from the gallbladder of the elasmobranch fish Dasyatis pastinaca (Linnaeus) from the Mediterranean coast off Tunisia. Mature myxospores were subspherical measuring 13.0 ± 0.3 (12.5-13.9) µm in length, 11.3 ± 0.5 (10.2-12.2) µm in width, and 11.8 ± 0.5 (11.4-12.7) µm in thickness. Four pyriform polar capsules 4.4 ± 0.3 (4.0-4.9) µm long and 3.5 ± 0.3 (3.0-3.8) µm wide. Valves were ornamented by 5 to 7 elevated surface ridges and displayed short caudal filaments. Chloromyxum dasyatidis n. sp. had an overall prevalence of infection of 38.5%, with significant seasonal variation, being more prevalent during summer (60.0%) and autumn (70.8%). Phylogenetically, this species grouped within the Chloromyxum sensu stricto lineage, forming a small clade together with the genetically more similar species C. acuminatum and C. myolibati, both from stingray hosts.

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突尼斯水域（地中海中部）常见黄貂鱼Dasyatis pastica（Linnaeus）中Chloromyxum dasyatidis n.sp.（粘液菌：Chloromyidae）的形态和分子特征。

一个新种Chloromyxum Mingazzini，1890，C.dasyatidis n.sp.，描述自突尼斯地中海沿岸的蓝鳍金枪鱼Dasytis pastinaca（Linnaeus）的胆囊。成熟的粘孢子是亚种性的，长13.0±0.3（12.5-13.9）µm，宽11.3±0.5（10.2-12.2）µm和厚11.8±0.5（11.4-12.7）µm。四个梨形极性胶囊，长4.4±0.3（4.0-4.9）µm，宽3.5±0.3（3.0-3.8）µm。瓣膜由5至7个隆起的表面脊装饰，并显示出短的尾丝。达氏绿蝇的总体感染率为38.5%，具有显著的季节变化，在夏季（60.0%）和秋季（70.8%）更为普遍。从系统发育角度来看，该物种属于严格意义上的绿蝇谱系，与遗传上更相似的物种C.acuminum和C.myolibati一起形成了一个小分支，这两个物种都来自黄貂鱼宿主。

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来源期刊

Systematic Parasitology 医学-寄生虫学

CiteScore

2.20

自引率

23.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Systematic Parasitology publishes papers on the systematics, taxonomy and nomenclature of the following groups: Nematoda (including plant-parasitic), Monogenea, Digenea, Cestoda, Acanthocephala, Aspidogastrea, Cestodaria, Arthropoda (parasitic copepods, hymenopterans, mites, ticks, etc.), Protozoa (parasitic groups), and parasitic genera in other groups, such as Mollusca, Turbelleria, etc. Systematic Parasitology publishes fully illustrated research papers, brief communications, and fully illustrated major revisions. In order to maintain high standards, all contributors describing new taxa are asked to state clearly where the holotype is deposited and to make paratypes available for examination by the referees. It is recognized that, in some cases, this may cause problems for the authors, but it is hoped that by adhering to this rule authors may be protected against rapid synonymy of their taxa, and the types will be preserved for posterity.