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Towards disentangling the classification of freshwater fish trypanosomes

Zhang, Peng; Liu, Jie; Yin, Xiao-Ming; Zhou, Jun-Yu; Lukeš, Julius; Lun, Zhao-Rong; Lai, De-Hua

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Authors

Peng Zhang

Jie Liu

Xiao-Ming Yin

Jun-Yu Zhou

Julius Lukeš

Zhao-Rong Lun

De-Hua Lai



Abstract

Currently, new species of freshwater fish trypanosomes, which are economically important parasites, are being described based on subjectively selected features, i.e., their cell morphology and the host species. We have performed detailed phylogenetic and haplotype diversity analyses of all 18S rRNA genes available for freshwater fish trypanosomes, including the newly obtained sequences of Trypanosoma carassii and Trypanosoma danilewskyi. Based on a sequence similarity of 99.5%, we divide these trypanosomes into 15 operational taxonomic units, and propose three nominal scenarios for distinguishing T. carassii and other aquatic trypanosomes. We find evidences for the existence of a low number of freshwater fish trypanosomes, with T. carassii having the widest geographic and host ranges. Our analyses support the existence of an umbrella complex composed of T. carassii and two sister species.

Citation

Zhang, P., Liu, J., Yin, X.-M., Zhou, J.-Y., Lukeš, J., Lun, Z.-R., & Lai, D.-H. (2023). Towards disentangling the classification of freshwater fish trypanosomes. #Journal not on list, 5(4), 551-563. https://doi.org/10.1007/s42995-023-00191-0

Journal Article Type Article
Acceptance Date Jul 15, 2023
Online Publication Date Oct 13, 2023
Publication Date Nov 1, 2023
Deposit Date Dec 6, 2023
Publicly Available Date Dec 6, 2023
Journal Marine Life Science & Technology
Peer Reviewed Peer Reviewed
Volume 5
Issue 4
Pages 551-563
DOI https://doi.org/10.1007/s42995-023-00191-0
Keywords 18S rRNA, Freshwater fish trypanosomes, Phylogeny, Morphology

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