AI Article Synopsis

  • - Between November 2018 and December 2021, researchers studied 35 Western Creek Chubsuckers from Arkansas, examining various organs for infections by myxozoans.
  • - A new species of myxozoan, named Myxobolus stuartae n. sp., was discovered in the fins of 34% of the chubsuckers, with detailed morphological and molecular data collected.
  • - Phylogenetic analysis showed that the new species is closely related to Myxobolus bibullatus and is the first documented fin-infecting myxozoan in Western Creek Chubsuckers.

Article Abstract

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/10.1645/22-40DOI Listing

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