Description of a new species of Aethycteron Suriano & Beverley-Burton, 1982 (Monogenea: Ancyrocephalidae) on the gills of the rare striated darter, Etheostoma striatulum Page & Braasch (Perciformes: Percidae), from the Duck River, Tennessee, USA
The striated darter (Etheostoma striatulum Page & Braasch) is a rare fish species restricted to the Duck River system in Maury County, Tennessee, USA. In this paper we describe Aethycteron striatuli n. sp., a gill parasite from a genus that has specialised on darters as the parasites’ preferred hosts. Aethycteron striatuli morphologically resembles A. malleus (Mueller, 1938), A. robisoni Cloutman & McAllister, 2017, A. chlorosomus (Harrises & Vickery, 1970) and A. micropercae Suriano & Beverley-Burton, 1982. It is distinguished from other species in that it is one of the smallest described parasites in this genus to date and possesses a small male copulatory organ with a distinct accessory piece. This is the first monogenean parasite reported from E. striatulum, a species that is currently under threat due to its restricted range and the potential for habitat loss. It is essential to expand our knowledge of the host and the pressures it faces in its limited habitat, including disease and parasite pressures, so that measures can be taken to preserve this vulnerable native species.
We thank Crissy L. Tarver and Joshua Mann for assistance with the field collections for this study. We thank James Powers and the Indiana University Light Microscopy Imaging Center for assistance with the photography of the parasite specimens. Kenneth F. Garcia provided etymology consultation for the naming of the new parasite species. This research was supported by funding from Indiana University Bloomington and University of Alabama in Huntsville.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All applicable institutional, national and international guidelines for the care and use of animals were followed. A scientific collecting permit was issued to BWS by the Tennessee Wildlife Resources Agency.
- Abernathy, A. C., & Mattingly, H. T. (2011). Population status and environmental associations of the rare Striated Darter, Etheostoma striatulum. Southeastern Fishes Council Proceedings, 1, 1–12.Google Scholar
- Etnier, D. A., & Starnes, W. C. (1993). The Fishes of Tennessee. Knoxville, TN: University of Tennessee Press-Knoxville.Google Scholar
- Hoffman, G. L. (1999). Parasites of North American Freshwater Fishes (2nd ed.). Ithaca, NY: Comstock Publishing Associates.Google Scholar
- Kuehne, R. A., & Barbour, R. W. (1983). The American Darters. Lexington, KY: University Press of Kentucky.Google Scholar
- McAllister, C. T., Cloutman, D. G., Fayton, T. J., & Robison, H. W. (2016). Aethycteron moorei (Monogenoidea: Dactylogyrida: Ancyrocephalidae) from the fantail darter, Etheostoma flabellare (Perciformes: Percidae): New distributional records for Arkansas and Oklahoma. Proceedings of the Oklahoma Academy of Science, 96, 53–57.Google Scholar
- NatureServe (2013). Etheostoma striatulum. The IUCN Red List of Threatened Species 2013: e.T8130A18235139. http://doi.org/10.2305/IUCN.UK.2013.Google Scholar
- Page, L. M. (1980). The life histories of Etheostoma olivaceum and Etheostoma striatulum, two species of darters in central Tennessee. Illinois Natural History Survey, Biological Notes, 113, 1–14.Google Scholar
- Page, L. M. (1983). Handbook of Darters. Neptune, NJ: TFH Publications.Google Scholar
- Page, L. M., & Burr, B. M. (2010). A field guide to freshwater fishes of North America north of Mexico. Boston, MA: Houghton Mifflin Company.Google Scholar
- Suriano, D. M., & Beverley-Burton, M. (1982). Aethycteron n. g. (Monogenea: Ancyrocephalinae) from Darters (Percidae: Etheostomatini) in Ontario, Canada with descriptions of A. caerulei n. sp., A. micropercae n. sp., and A. nigrei n. sp. from Etheostoma spp. Canadian Journal of Zoology, 60, 1397–1407.CrossRefGoogle Scholar
- Tennessee Wildlife Resources Agency. (2016). Tennessee Threatened and Endangered Species List. Resource document. https://www.tn.gov/content/dam/tn/twra/documents/1660-01-32-threatened-endangered-species-rule.pdf. Accessed 24 August 2018.
- Whittington, I. D., & Chisholm, L. A. (2008). Diseases caused by Monogenea. In: Eiras, J. C., Segner, H., Wahli, T. & Kapoor, B. G. (Eds) Fish Diseases, Volume 2. Enfield, NH: Science Publishers, pp. 683–816.Google Scholar