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A new species of Myxidium (Cnidaria: Myxosporea: Myxidiidae) from the gallbladder of pickerels, Esox spp. (Esociformes: Esocidae), from southwestern Arkansas, USA

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Abstract

During April 2016 and again in November 2021, four Chain Pickerels, Esox niger were collected from Union (n = 3) and Nevada (n = 1) counties, Arkansas, USA, and 65 Grass Pickerels, Esox americanus vermiculatus were collected between January 2015 and December 2021 from four counties of Arkansas (n = 31) and McCurtain County, Oklahoma, USA (n = 34), and examined for myxozoans. Gallbladders of an individual E. niger from Nevada County, Arkansas, as well as a single individual of E. a. vermiculatus from Sevier County, Arkansas, were infected with a new myxozoan, Myxidium whippsi n. sp. Qualitative and quantitative morphological data were from formalin-fixed preserved myxospores while molecular data (SSU rRNA gene) consisted of 2031bp (host: E. niger) and 1723 bp (host: E. a. vermiculatus) partial sequences of the small subunit ribosomal RNA gene. Phylogenetic analysis placed M. whippsi n. sp. in a clade with two other myxozoans, Zschokkella nova and Myxidium truttae, previously reported from cyprinids and salmonids, respectively. We document the first report of a myxozoan from E. a. vermiculatus. This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as urn:lsid:zoobank.org:pub:A50FCEB3-68C3-428E-A04E-37A16790F1EB.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

We thank Nikolas H. McAllister (Broken Bow High School, Broken Bow, Oklahoma, USA), Zarah S. McAllister (Lukfata Elementary, Broken Bow, Oklahoma, USA), Dr. David Neely (Tennessee Aquarium, Chattanooga, Tennessee, USA), and Uland Thomas (Chicago, Illinois, USA) for assistance in collecting. Drs. Scott L. Gardner and Gabor Racz (HWML) are acknowledged for expert curatorial assistance as well as Laurence M. Hardy (Ouachita Mountains Biological Station, Big Fork, Arkansas, USA) for providing gratis housing and laboratory space for CTM. The findings and conclusions in this article are those of the authors and do not necessarily represent the views of the USFWS. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the USFWS or U.S. Government.

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Contributions

The authors confirm contribution to the paper as follows: CTM & DGC prepared fig. 1; DGC prepared fig. 2; EML prepared fig. 3; CTM, DGC, & EML provided study conception, design, & wrote the main manuscript; CTM, DGC, & EML collected data; CTM, DGC, & EML provided analysis and interpretation of results; all authors prepared the draft manuscript, reviewed the manuscript & approved the final version.

Corresponding author

Correspondence to Chris T. McAllister.

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The authors declare that they have no conflict of interest.

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All applicable institutional, national and international guidelines for the care and use of animals were followed. The Arkansas Game and Fish Commission and Oklahoma Department of Wildlife Conservation provided a Scientific Collecting Permits to CTM.

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McAllister, C.T., Cloutman, D.G., Leis, E.M. et al. A new species of Myxidium (Cnidaria: Myxosporea: Myxidiidae) from the gallbladder of pickerels, Esox spp. (Esociformes: Esocidae), from southwestern Arkansas, USA. Syst Parasitol 99, 611–620 (2022). https://doi.org/10.1007/s11230-022-10050-8

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  • DOI: https://doi.org/10.1007/s11230-022-10050-8

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