Novel gene arrangement in the mitochondrial genome of Aspersentis megarhynchus (Acanthocephala, Echinorhynchida, Heteracanthocephalidae), and its phylogenetic implications.

IF 2.3 2区医学 Q2 PARASITOLOGY Parasite Pub Date : 2024-01-01 Epub Date: 2024-10-08 DOI:10.1051/parasite/2024064

Yuan-Yuan Xie, Hui-Xia Chen, Tetiana A Kuzmina, Olga Lisitsyna, Liang Li

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Abstract

The Heteracanthocephalidae Petrochenko, 1956 is a rare family of acanthocephalans mainly parasitic in fishes. The pattern of mitogenomic evolution of the Heteracanthocephalidae is still unknown, and the phylogenetic relationships of the Heteracanthocephalidae with the other 14 families within the order Echinorhynchida remain unclear. In the present study, the complete mitochondrial genome of Aspersentis megarhynchus (von Linstow, 1892) Golvan, 1960 was sequenced and annotated for the first time, which represents the first mitogenomic data for the genus Aspersentis and also for the family Heteracanthocephalidae. The mitogenome of A. megarhynchus has 14,661 bp and includes 36 genes, containing 12 protein-coding genes (PCGs) (missing atp8), 22 tRNA genes, and 2 ribosomal RNAs (rrnS and rrnL), plus two non-coding regions. Comparative mitochondrial genomic analysis revealed that the presence of translocations of several tRNA genes (trnV, trnE, and trnT) and the gene arrangement in the mitogenome of A. megarhynchus represents a new type in Acanthocephala. Moreover, the mitogenomic phylogenetic results based on concatenated amino acid sequences of 12 protein-coding genes strongly supported the validity of the Heteracanthocephalidae and suggested close affinity between the Heteracanthocephalidae and Echinorhynchidae in the order Echinorhynchida.

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Aspersentis megarhynchus（棘鱼科、棘鱼属、异棘鱼科）线粒体基因组中的新基因排列及其系统发育意义。

棘头菀鱼科（Heteracanthocephalidae Petrochenko, 1956）是一个罕见的棘头菀鱼科，主要寄生于鱼类。棘尾鱼科的有丝分裂进化模式尚不清楚，棘尾鱼科与棘鱼目中其他 14 个科的系统发育关系也不明确。本研究首次对Aspersentis megarhynchus (von Linstow, 1892) Golvan, 1960的完整线粒体基因组进行了测序和注释，这是Aspersentis属和异棘鲷科的第一个有丝分裂基因组数据。A. megarhynchus 的有丝分裂基因组有 14,661 bp，包括 36 个基因，其中有 12 个蛋白质编码基因（PCGs）（缺少 atp8）、22 个 tRNA 基因和 2 个核糖体 RNA（rrnS 和 rrnL），另外还有两个非编码区。线粒体基因组比较分析表明，A. megarhynchus 的有丝分裂基因组中存在几个 tRNA 基因（trnV、trnE 和 trnT）的易位和基因排列，代表了 Acanthocephala 的一种新类型。此外，基于12个蛋白编码基因的氨基酸序列的有丝分裂组系统发育结果有力地支持了棘尾鱼科的正确性，并表明棘尾鱼科与棘鱼目中的棘鱼科之间有着密切的亲缘关系。

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来源期刊

Parasite 医学-寄生虫学

CiteScore

5.50

自引率

6.90%

发文量

审稿时长

3 months

期刊介绍： Parasite is an international open-access, peer-reviewed, online journal publishing high quality papers on all aspects of human and animal parasitology. Reviews, articles and short notes may be submitted. Fields include, but are not limited to: general, medical and veterinary parasitology; morphology, including ultrastructure; parasite systematics, including entomology, acarology, helminthology and protistology, and molecular analyses; molecular biology and biochemistry; immunology of parasitic diseases; host-parasite relationships; ecology and life history of parasites; epidemiology; therapeutics; new diagnostic tools. All papers in Parasite are published in English. Manuscripts should have a broad interest and must not have been published or submitted elsewhere. No limit is imposed on the length of manuscripts, but they should be concisely written. Papers of limited interest such as case reports, epidemiological studies in punctual areas, isolated new geographical records, and systematic descriptions of single species will generally not be accepted, but might be considered if the authors succeed in demonstrating their interest.