Identification of a new species of Gyrodactylus von Nordmann, 1832 (Monogenoidea Gyrodactylidae) isolated from Diptychus maculatus in Yarkand River, Xinjiang, China

IF 2 3区医学 Q3 ECOLOGY

International Journal for Parasitology-Parasites and Wildlife Pub Date : 2024-05-26 DOI:10.1016/j.ijppaw.2024.100949

Cui-lan Hao , Wen-run Zhang , Kadirden Arken , Jin-pu Wang , Cai-xia Shi , Li Zhang , Cheng Yue

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Abstract

To investigate Gyrodactylus infection of fish in the river system of Xinjiang (China), Gyrodactylus individuals were isolated from specimens of Diptychus maculatus. Morphological characterization and phylogenetic analysis based on ITS1-5.8S-ITS2 rDNA locus revealed that the gyrodactylids belong to new species. Gyrodactylus diptychi n. sp. differs significantly in the morphology of the haptoral structures from 12 known species of Gyrodactylus found in fishes of the subfamily Schizothoracinae. In particular, G. diptychi n. sp. has a relatively short dorsal bar with thick and large ends, flat and straight hamuli roots, and small ventral bar processes. Furthermore, G. diptychi n. sp. is the only representative of Gyrodactylus found on D. maculatus. Using the BLASTn search of ITS1-5.8S-ITS2 rDNA sequences in GenBank and the Bayesian Information and Maximum Likelihood methods, we constructed phylogenetic trees for G. diptychi n. sp. As a result, our studies clearly identified that G. diptychi n. sp. was the first Gyrodactylus monogenean isolated from D. maculatus and a new species belonged to the subgenus Limnonephrotus.

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从中国新疆叶尔羌河中分离出的一个新物种--Gyrodactylus von Nordmann, 1832 (Monogenoidea Gyrodactylidae)

为了研究新疆（中国）江河水系鱼类的感染情况，研究人员从新疆（中国）江河水系鱼类的标本中分离出个体，并对其进行了形态学表征和基于rDNA位点的系统发育分析，结果表明该鱼类属于新种。特别是，n. sp.的背鳍条相对较短，末端粗而大，鳍根扁平而直，腹鳍条突起较小。通过对 GenBank 中的 rDNA 序列进行 BLASTn 检索，并采用贝叶斯信息和最大似然法，我们构建了 n. sp.的系统发生树。结果，我们的研究明确了 n. sp.是第一个从.中分离出来的单系鱼类，是属于.亚属的一个新物种。

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来源期刊

International Journal for Parasitology-Parasites and Wildlife Medicine-Infectious Diseases

CiteScore

3.80

自引率

5.60%

发文量

113

审稿时长

45 days

期刊介绍： The International Journal for Parasitology: Parasites and Wildlife (IJP-PAW) publishes the results of original research on parasites of all wildlife, invertebrate and vertebrate. This includes free-ranging, wild populations, as well as captive wildlife, semi-domesticated species (e.g. reindeer) and farmed populations of recently domesticated or wild-captured species (e.g. cultured fishes). Articles on all aspects of wildlife parasitology are welcomed including taxonomy, biodiversity and distribution, ecology and epidemiology, population biology and host-parasite relationships. The impact of parasites on the health and conservation of wildlife is seen as an important area covered by the journal especially the potential role of environmental factors, for example climate. Also important to the journal is ''one health'' and the nature of interactions between wildlife, people and domestic animals, including disease emergence and zoonoses.