Myxobolus nekrasovae n. sp. (Cnidaria, Myxozoa) is a new species parasitizing the gills of the gibel carp, Carassius auratus gibelio

Marina D-D Batueva; Pavel Vlasenko; Mikhail M Solovyev; Roman Yu Abasheev

doi:10.1016/j.micpath.2023.106454

Myxobolus nekrasovae n. sp. (Cnidaria, Myxozoa) is a new species parasitizing the gills of the gibel carp, Carassius auratus gibelio

Microb Pathog. 2023 Dec:185:106454. doi: 10.1016/j.micpath.2023.106454. Epub 2023 Nov 15.

Authors

Marina D-D Batueva¹, Pavel Vlasenko², Mikhail M Solovyev³, Roman Yu Abasheev⁴

Affiliations

¹ Institute of General and Experimental Biology of Siberian Branch, Russian Academy of Sciences, 670047, Ulan - Ude, Russia. Electronic address: badmm_@rambler.ru.
² Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia; A.N. Severtsov Institute of Ecology and Evolution, 192 Russian Academy of Sciences, Moscow, Russia.
³ Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia; A.N. Severtsov Institute of Ecology and Evolution, 192 Russian Academy of Sciences, Moscow, Russia; Tomsk State University, Tomsk, Russia.
⁴ Buryat State University, Ulan-Ude, Russia.

PMID: 37977481
DOI: 10.1016/j.micpath.2023.106454

Abstract

A new Myxobolus species, Myxobolus nekrasovi n. sp., was found in the gill arch of the gibel carp Carassius auratus gibelio during investigation of fish myxosporean fauna of ponds of Lake Baikal basin. The parasites were studied on the basis of spore morphology, as well as with histological and molecular methods. Mature spores of M. nekrasovi n. sp. are ellipsoidal in frontal view and lemon-shaped in lateral view, measuring 13.84 ± 0.4 (12.2-15) μm in length, 9.73 ± 0.2 (8.5-10.7) μm in width, 6,75 ± 0.1 (6.0-7.6) μm in thickness. Polar capsules are unequal and pyriform, measuring: length 6.31 ± 0.1 (5.4-7.4), width 3.49 ± 0.04 (3.12-4) μm and length 2.88 ± 0.1 (2.1-3.5), width 1.4 ± 0.03 (1-1.6) μm. Phylogenetic analysis with the SSU rDNA gene shows Myxobolus nekrasovae n. sp. as a sister species of the subclade formed by Thellohanellus sinensis, Myxobolus acutus, M. zhaltsanovae that infect gibel carp Carassius auratus gibelio.

Keywords: 18S rRNA; Fish parasites; Histology; Lake Baikal; Morphology.

MeSH terms

Animals
Cnidaria*
Fish Diseases* / pathology
Gills / pathology
Goldfish / parasitology
Myxobolus*
Myxozoa*
Parasitic Diseases, Animal* / parasitology
Phylogeny
Spores