Description of a New Genus and Species of Cyathocotylid Digeneans from Australia

IF 1.5 3区农林科学 Q4 PARASITOLOGY

Acta Parasitologica Pub Date : 2026-03-31 DOI:10.1007/s11686-026-01266-5

Maggie A. Young, Vasyl V. Tkach, Jeffrey A. Bell, Ludovica Valenza, Amber Gillett, Tyler J. Achatz

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引用次数: 0

Abstract

Purpose

Cyathocotylidae Mühling, 1896 is a cosmopolitan family of diplostomoidean digeneans characterized by a broad range of vertebrate definitive hosts, including fishes, birds, reptiles, and mammals. Cyathocotylid diversity in Australasia remains poorly known. In the present study, we describe a new genus and species of cyathocotylid digenean collected from the small intestine of the Australasian gannet, Morus serrator, in Queensland, Australia.

Methods

Adult cyathocotylid specimens were collected from the small intestine of an Australasian gannet in Queensland. Specimens were stained, mounted, and examined using DIC microscopy. Genomic DNA was extracted, and a fragment of the large ribosomal subunit (28S) rDNA was sequenced and compared with available sequences from cyathocotylids.

Results

A new genus and species, Glandocirrus crikey n. gen., n. sp., is described. It can be readily distinguished from all other cyathocotylid genera by its exceptionally large, strongly glandular cirrus sac. The 28S sequence is identical to previously published unidentified cercariae from Australia, thereby linking larval and adult stages and confirming the distinctiveness of the lineage.

Conclusions

This discovery represents the seventeenth genus of Cyathocotylidae and only the second from Australasia supported by DNA data, emphasizing the underexplored diversity of diplostomoideans in the region.

Abstract Image

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标题澳大利亚银子叶属地庚属一新属及新种描述。

目的：Cyathocotylidae m hling， 1896是一个世界性的digenediplostomoidea科，以广泛的脊椎动物最终宿主为特征，包括鱼类，鸟类，爬行动物和哺乳动物。澳大拉西亚的cyathocotyoid多样性仍然知之甚少。在本研究中，我们描述了从澳大利亚昆士兰的澳大利亚塘麻（Morus serrator）的小肠中收集的一个新属和种。方法：在澳大利亚昆士兰州的一只大洋洲塘鹅的小肠中采集成年卵圆虫标本。用DIC显微镜对标本进行染色、安装和检查。提取基因组DNA，测序大核糖体亚基（28S） rDNA片段，并与cyathocotylids的现有序列进行比较。结果：发现了一个新属新种——臭腺病毒（Glandocirrus crikey n. gen., n. sp.）。它可以很容易地从所有其他cyathotylid属区分其特别大，强腺卷云囊。28S序列与先前发表的来自澳大利亚的未知尾蚴相同，从而将幼虫和成年阶段联系起来，并确认了谱系的独特性。结论：这一发现是Cyathocotylidae的第17属，也是澳大利亚DNA数据支持的第二个属，强调了该地区未被充分开发的diplostomoideans多样性。

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来源期刊

Acta Parasitologica 医学-寄生虫学

CiteScore

3.10

自引率

6.70%

发文量

149

审稿时长

6-12 weeks

期刊介绍： Acta Parasitologica is an international journal covering the latest advances in the subject. Acta Parasitologica publishes original papers on all aspects of parasitology and host-parasite relationships, including the latest discoveries in biochemical and molecular biology of parasites, their physiology, morphology, taxonomy and ecology, as well as original research papers on immunology, pathology, and epidemiology of parasitic diseases in the context of medical, veterinary and biological sciences. The journal also publishes short research notes, invited review articles, book reviews. The journal was founded in 1953 as "Acta Parasitologica Polonica" by the Polish Parasitological Society and since 1954 has been published by W. Stefanski Institute of Parasitology of the Polish Academy of Sciences in Warsaw. Since 1992 in has appeared as Acta Parasitologica in four issues per year.