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Description of three new species of Gyrodactylus von Nordmann, 1832 (Monopisthocotylea: Gyrodactylidae) on Triplophysa species (Nemacheilidae) from Qinghai-Tibet Plateau

Published online by Cambridge University Press:  11 November 2024

X. Jin Open the ORCID record for X. Jin [Opens in a new window] ,
M. Li ,
D. Zhang ,
H. Zou ,
J. Cai ,
K. Amoah ,
G.T. Wang  and
W.X. Li Open the ORCID record for W.X. Li [Opens in a new window]
X. Jin
Affiliation:
Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, P. R. China Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture (CAS), Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
M. Li
Affiliation:
Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture (CAS), Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China University of Chinese Academy of Sciences, Beijing 100049, P. R. China
D. Zhang
Affiliation:
Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education and College of Ecology and Environmental Sciences, Tibet University, 850000, Lhasa, P. R. China.
H. Zou
Affiliation:
Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture (CAS), Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
J. Cai
Affiliation:
Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, P. R. China
K. Amoah
Affiliation:
Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, P. R. China
G.T. Wang
Affiliation:
Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture (CAS), Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China University of Chinese Academy of Sciences, Beijing 100049, P. R. China
W.X. Li*
Affiliation:
Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture (CAS), Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China University of Chinese Academy of Sciences, Beijing 100049, P. R. China
*
Corresponding author: Wenxiang Li; Email: liwx@ihb.ac.cn
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Abstract

Three new species of Gyrodactylus were identified from the body surface of the Triplophysa species from the Qinghai-Tibet Plateau, Gyrodactylus triplorienchili n. sp. on Triplophysa orientalis in northern Tibet, G. yellochili n. sp. on T. sellaefer and T. scleroptera and G. triplsellachili n. sp. on T. sellaefer and T. robusta in Lanzhou Reach of the Yellow River. The three newly identified species share the nemachili group species’ characteristic of having inturning hamulus roots. Gyrodactylus triplorienchili n. sp. shared a quadrate sickle heel and a thin marginal hook sickle, two morphological traits that set them apart from G. yellochili n. sp. However, they may be identified by the distinct shapes of the sickle base and marginal hook sickle point. Gyrodactylus triplsellachili n. sp. had much larger opisthaptoral hard part size than the other two species. The three new species show relatively low interspecific differences of 2.9–5.3% p-distance for ITS1-5.85-ITS2 rDNA sequences. Phylogenetic analysis indicated that the three new species formed a well-supported monophyletic group (bp = 99) with the other nemachili group species.

Keywords

TriplophysaQinghai-Tibet PlateauGyrodactylusnemachili group

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Type
Research Paper
Information
Journal of Helminthology , Volume 98 , 2024 , e70
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© The Author(s), 2024. Published by Cambridge University Press

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