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Description of raabeia, synactinomyxon and neoactinomyxum developing stages of myxosporeans (Myxozoa) infecting Isochaetides michaelseni Lastočkin (Tubificidae) in Lake Balaton and Kis-Balaton Water Reservoir, Hungary

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Abstract

Molecular and morphometric investigations were conducted on the actinosporean morphotypes of myxosporeans surveyed in oligochaetes of Lake Balaton and Kis-Balaton Water reservoir. Oligochaetes belonging to the species Isochaetides michaelseni Lastočkin and Branchiura sowerbyi Beddard as well as to the genera Nais Dujardin, Dero Müller and Aeolosoma Ehrenberg were studied during an 18-month period. Actinosporeans were obtained exclusively from I. michaelseni (7,818 specimens) with very low prevalence (0.01–0.06%). Four new actinosporean morphotypes of the collective groups raabeia (2 types), synactinomyxon (1 type) and neoactinomyxum (1 type) were found and described, including the first synactinomyxon collective group from Hungarian biotopes and a new raabeia morphotype. Except for Synactinomyxon type 1, the 18S rDNA analysis revealed that the spores did not match any myxospore entity found in the GenBank.

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Acknowledgements

This research was supported by the Hungarian Scientific Research Fund (OTKA) (Grant K 100132, KTIA-AIK-12-1-2013-0017), and a Malaysian Governmental Scholarship for MHB. The authors are grateful to the staff of the Fish Laboratory, Department of Animal Sciences & Animal Husbandary, Georgikon Faculty, Keszthely, Hungary for their assistance during the study.

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Borkhanuddin, M.H., Cech, G., Molnár, K. et al. Description of raabeia, synactinomyxon and neoactinomyxum developing stages of myxosporeans (Myxozoa) infecting Isochaetides michaelseni Lastočkin (Tubificidae) in Lake Balaton and Kis-Balaton Water Reservoir, Hungary. Syst Parasitol 88, 245–259 (2014). https://doi.org/10.1007/s11230-014-9496-1

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