Between November 2018 and December 2021, 35 juvenile and adult Western Creek Chubsuckers, Erimyzon claviformis, were collected from 5 sites in western and southern Arkansas (Ouachita and Red River drainages), and their gills, gallbladders, fins, integument, other major organs, and musculature were examined for myxozoans. The fins of 12 (34%) individuals were infected with a novel species, Myxobolus stuartae n. sp. Qualitative and quantitative morphological data were obtained from formalin-fixed preserved myxospores. Molecular data from ethanol-preserved specimens consisted of a 2,028 base pair sequence of small subunit (SSU) ribosomal DNA (rDNA) from a specimen collected in Nevada County. Three other specimens from Polk County yielded partial SSU rDNA sequences that were identical to the first sequence. Phylogenetic analyses placed M. stuartae n. sp. as sister to Myxobolus bibullatus (Kudo, 1934), both clustering with other catostomid-infecting myxobolids. This is the first fin-infecting myxozoan reported from E. claviformis.
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http://dx.doi.org/10.1645/22-40 | DOI Listing |
The biodiversity of freshwater fishes is extensive in Mexico; however, knowledge of their associated myxozoan parasites is limited. This study aimed to recognize myxozoan parasites in the endemic fish Mayaheros urophthalmus. Two new species, Myxobolusmayarum n.
View Article and Find Full Text PDFActa Trop
January 2025
Laboratorio de Zoología de Invertebrados, Departamento Académico de Zoología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos (UNMSM), Av. Venezuela cuadra 34, Lima, Peru. Electronic address:
A new species of Henneguya Thélohan, 1892 (Myxosporea: Bivalvulida: Myxobolidae) infecting the internal region of the stomach of the Peruvian morwong Chirodactylus variegatus (Valenciennes, 1833) (Centrarchiformes: Latridae), an economically important fish in Peruvian artisanal fishery, is described. Morphologically, Henneguya chirodactyli n. sp.
View Article and Find Full Text PDFJ Fish Dis
December 2024
Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
Myxobolus Bütschli, 1882 is a highly important genus of fish myxozoans, consisting of many species that cause serious diseases in ornamental cyprinid fish species in different geographic areas by infecting a wide range of organs. This study describes a new Myxobolus species infecting the gill lamellae, gill rakers and skin epidermis of goldfish (Carassius auratus) from Mohammadshahr, Iran, based on detailed morphological, histological and molecular analysis. Mature spores were small and spherical in shape, consisting of two symmetrical shell valves in frontal view, measuring 10.
View Article and Find Full Text PDFSyst Parasitol
December 2024
, 602 Big Creek Drive, Sherwood, AR, 72120, USA.
Forty-two species of myxozoans, including 31 species of Myxobolus Bütschli, 1882, have been described from centrarchid fishes. One species, the green sunfish (Lepomis cyanellus), has been reported to host at least three species of Myxobolus. Between March 2023 and June 2024, 42 L.
View Article and Find Full Text PDFBMC Vet Res
November 2024
Aquatic Animal Medicine Department, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Qalyubia, 13736, Egypt.
Context: Myxosporean endoparasites (phylum cnidarian) are critical pathogens that affect both wild and cultured freshwater and marine water fishes globally causing huge economic losses and high mortalities.
Study Objective: The present study investigated myxosporean infections in Nile tilapia and African catfish collected from the natural resources.
Methods: A total of four hundred Nile tilapia with an average weight (60 ± 5 g) and two hundred African catfish with an average weight (185 ± 30 g) were collected seasonally from Qalyubia Governorate, Egypt for parasitological and molecular diagnosis of isolated myxozoan species.
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