Fish hosts are determined by looking at both lab metamorphosis and natural infestations. Looking at both is necessary, as lab transformations from glochidia to juvenile may occur, but the mussel may not actually infect a particular species in a natural situation. Natural infestations may also be found, but glochidia will attach to almost any fish, including those that are not suitable hosts. Lab transformations involve isolating one particular fish species and introducing glochidia either into the fish tank or directly inoculating the fish gills with glochidia. Tanks are monitored and if juveniles are later found the fish species is considered a suitable host.
In lab trials, Villosa_iris glochidia metamorphosed on the Lepomis cyanellus, Micropterus dolomieu, Micropterus salmoides, Micropterus notius, Micropterus punctulatus, Luxilus chrysocephalus, Erimystax dissimilis, Gambusia affinis, Etheostoma blennioides, Etheostoma caeruleum, Etheostoma camurum, Percina maculata, and Perca flavescens.
Ecosystem Impact: parasite
Species Used as Host:
- green sunfish, Lepomis_cyanellus
- smallmouth bass, Micropterus_dolomieu
- largemouth bass, Micropterus_salmoides
- Suwanee bass, Micropterus_notius
- spotted bass, Micropterus_punctulatus
- striped shiner, Luxilus_chrysocephalus
- streamline chub, Erimystax_dissimilis
- mosquitofish, Gambusia_affinis
- greenside darter, Etheostoma_blennioides
- rainbow darter, Etheostoma_caeruleum
- bluebreast darter, Etheostoma_camurum
- blackside darter, Percina_maculata
- yellow perch, Perca_flavescens
- Neves, R., L. Weaver, A. Zale. 1985. An evaluation of host fish suitability for glochidia of Villosa vanuxemi and V. nebulosa (Pelecypoda: Unionidae). America Midland Naturalist, 113: 13-19.
- Zale, A., R. Neves. 1982. Fish hosts of four species of lampsiline mussels (Mollusca: Unionidae) in Big Moccasin Creek, Virginia. Canadian Journal of Zoology, 60: 2535-2542.
- Watters, G., S. O'Dee. 1997. Potential hosts for Villosa iris (Lea, 1829). Triannual unionid report, 12: 7. Accessed October 01, 2005 at http://ellipse.inhs.uiuc.edu/FMCS/TUR/TUR12.html#p9.
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