Comparative molecular analyses of Eimeria Schneider (Apicomplexa: Eimeriidae) species from rock ptarmigan in Iceland, Svalbard-Norway, and Japan

IF 1 4区医学 Q4 PARASITOLOGY

Systematic Parasitology Pub Date : 2024-04-20 DOI:10.1007/s11230-024-10159-y

Makoto Matsubayashi, Sayaka Tsuchida, Tomoyuki Shibahara, Kazunari Ushida, Eva Fuglei, Åshild Ø. Pedersen, Ólafur K. Nielsen, Donald W. Duszynski, Karl Skírnisson

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Abstract

The rock ptarmigan (Lagopus muta) has a Holarctic breeding distribution and is found in arctic and sub-arctic regions. Isolated populations and glacial relicts occur in alpine areas south of the main range, like the Pyrenees in Europe, the Pamir mountains in Central Asia, and the Japanese Alps. In recent decades considerable effort has been made to clarify parasite infections in the rock ptarmigan. Seven Eimeria spp. have been reported parasitizing rock ptarmigan. Two of those species, E. uekii and E. raichoi parasitizing rock ptarmigan (L. m. japonica) in Japan, have been identified genetically. Here we compare partial sequences of nuclear (18S rRNA) and mitochondrial (COI) genes and we detail the morphology of sporulated oocysts of E. uekii and E. raichoi from Japan, E. muta and E. rjupa, from the rock ptarmigan (L. m. islandorum) in Iceland, and two undescribed eimerian morphotypes, Eimeria sp. A, and Eimeria sp. B, from rock ptarmigan (L. m. hyperborea) in Norway (Svalbard in the Norwegian Archipelago). Two morphotypes, ellipsoidal and spheroidal, are recognized for each of the three host subspecies. Our phylogenetic analysis suggests that the ellipsoidal oocyst types, E. uekii, E. muta, and Eimeria sp. A (Svalbard-Norway) are identical and infects rock ptarmigan in Japan, Iceland, and Svalbard-Norway, respectively. Eimeria uekii was first described in Japan in 1981 so that E. muta, described in Iceland in 2007, and Eimeria sp. A in Svalbard-Norway are junior synonyms of E. uekii. Also, phylogenetic analysis shows that the spheroidal oocyst types, E. rjupa and Eimeria sp. B (Svalbard-Norway), are identical, indicating that rock ptarmigan in Iceland and Svalbard-Norway are infected by the same Eimeria species and differ from E. raichoi in Japan.

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冰岛、挪威斯瓦尔巴德和日本岩鸻中 Eimeria Schneider（Apicomplexa：Eimeriidae）物种的分子比较分析

岩鸻（Lagopus muta）的繁殖地分布在全北极地区，在北极和亚北极地区都有发现。在主分布区以南的高山地区，如欧洲的比利牛斯山脉、中亚的帕米尔山脉和日本的阿尔卑斯山脉，有孤立的种群和冰川遗迹。近几十年来，人们一直在努力弄清岩雀的寄生虫感染情况。据报道，有七种艾美拉虫寄生在石鸡身上。其中寄生于日本岩雉鸡（L. m. japonica）的两个种--E. uekii 和 E. raichoi--已通过基因鉴定。在这里，我们比较了核基因（18S rRNA）和线粒体基因（COI）的部分序列，并详细研究了日本的 E. uekii 和 E. raichoi、冰岛的 E. muta 和 E. rjupa、岩雉（L. m. islandorum）的孢子化卵囊的形态。m. islandorum）的 E. muta 和 E. rjupa，以及挪威（挪威群岛中的斯瓦尔巴特群岛）岩雉（L. m. hyperborea）的两种未被描述的艾美耳形态：Eimeria sp.三个宿主亚种各有两种形态，即椭圆形和球形。我们的系统发育分析表明，椭圆形卵囊型、E. uekii、E. muta 和 Eimeria sp.因此，2007 年在冰岛描述的 E. muta 和挪威斯瓦尔巴德的 Eimeria sp.此外，系统发育分析表明，球形卵囊类型 E. rjupa 和 Eimeria sp. B（斯瓦尔巴德-挪威）是相同的，这表明冰岛和斯瓦尔巴德-挪威的岩雉感染的是同一埃默氏菌种，与日本的 E. raichoi 不同。

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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.