The Morphology and Description of Glaridacris catostomi Cooper, 1920 (Cestode: Caryophyllidae) from Catostomid Fishes in Lakes and Rivers of Wisconsin, with Morphological Observations

Authors: Amin OA* and Nataliya YU Rubtsova

DOI: 10.23880/izab-16000402

Volume 5, Issue 5

Abstract

Thirteen species in 8 genera of caryophyllid cestodes including Glaridacris catostomi Cooper, 1920 were found in Catostomus commersoni (Lacépède), Cyprinus carpio (Raf.), and Erimyzon sucetta (Lacépède) in 2 lakes and 2 streams in SE Wisconsin and/or SW Lake Michigan. The morphology of the Wisconsin populations of G. catostomi is revisited using light microscopy revealing new features of the scolex and reproductive organs. The development of scolex and some reproductive structures were observed in maturing specimens. We describe new specimens and provide a comparative morphometric data with other earlier descriptions by Cooper, Hunter, and Mackiewicz. Our specimens were largest compared to those examined by other observers and many structures were correspondingly larger. The status of the genus Glaridacris was discussed in terms of most recent taxonomy and its evolutionary relationships.

Keywords: Caryophyllidae; Glaridacris catostomi; Wisconsin; Morphology; Phylogeny

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