Purpose: We describe two new species of Myxobolus (Myxobolidae) found parasitizing Mugil curema from two locations in Brazil: Myxobolus curemae n. sp. from gill arch and rays and Myxobolus maceioensis n. sp. from gill lamellae.
Methods: We based the descriptions on myxospore morphology, histology, and small-subunit ribosomal DNA sequences.
Results: Myxospores of the two new species had similar morphology and morphometry but differed in spore body width and length, and ssrDNA sequences differed by 10.5%. These data supported the diagnosis of the parasites as distinct and novel species. The phylogenetic analysis showed a subclade formed by species that parasitize Mugiliformes, with M. maceioensis n. sp. as a sister species of Myxobolus episquamalis and Myxobolus bizerti, while there is a group of six species that are sister related to M. curemae n. sp. Our analysis was consistent with previous studies suggesting that orders of the hosts are strongly correlated with phylogenetic signals in the Myxobolidae.
Conclusions: Myxobolus curemae n. sp. and M. maceioensis n. sp. are new species identified parasitizing M. curema.
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http://dx.doi.org/10.1007/s11686-022-00569-7 | DOI Listing |
Acta Trop
December 2024
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.
Int J Parasitol Parasites Wildl
December 2024
HUN-REN Veterinary Medical Research Institute, Budapest, Hungary.
Six distinct actinospore types were identified in the intestinal epithelium of oligochaetes collected from the Szigetbecse and Makád fish farms of Ráckeve Danube Arm Fishing Association, in Hungary. Four new types: triactinomyxon type, raabeia type, aurantiactinomyxon type 1, and aurantiactinomyxon type 2, were described morphologically and molecularly from three invertebrate host species: , and . The 18S ribosomal DNA (rDNA) analysis revealed that these new types of actinospores did not match any myxospore sequences available in GenBank.
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