2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2018 | 11:00 AM - 11:15 AM | INFECTION OF INVASIVE RUSTY CRAYFISH WITH NATIVE PARASITES IN THE GREAT LAKES REGION | 430 B
INFECTION OF INVASIVE RUSTY CRAYFISH WITH NATIVE PARASITES IN THE GREAT LAKES REGION
Parasites may be transmitted between native and invasive species during invasions; however, the importance of this transmission for most invasions is unknown. In the Great Lakes region, a trematode parasite (Microphallus sp.) reduces invasive rusty crayfish (Faxonius rusticus) population growth, alters its behavior, and reduces its per-capita impacts on lower trophic levels. We were interested in whether Microphallus was introduced to the Great Lakes region with rusty crayfish, or if it was transmitted to rusty crayfish from a native congener (F. virilis or F. propinquus). We collected all three congeners from 25 lakes in the Great Lakes region and rusty crayfish from 38 streams in the native range. We sequenced an ~800 bp region of the mitochondrial COI gene for 182 trematode parasites from collected crayfish. Parasite genotypes were similar among crayfish in the Great Lakes region, and diverged significantly between the Great Lakes region and native range of rusty crayfish, suggesting that the species of Microphallus present in the Great Lakes was transmitted to rusty crayfish after the crayfish was introduced. These results provide new evidence that parasites in an invaded range can be important for invasive species impacts.
- Disease Ecology
- Invertebrate
- Community
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Presenters/Authors
Lindsey Reisinger
(), University of Florida, lreisinger1@ufl.edu;
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Erin Collins
(), Central Michigan University, eecollin1@gmail.com;
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Mael Glon
(), Ohio State University, glon.1@osu.edu;
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Andrew Mahon
(), Central Michigan University, mahon2a@cmich.edu;
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