2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/23/2019 | 10:00 AM - 10:15 AM | USING METACOMMUNITY THEORY TO PREDICT THE OUTCOMES OF HOST AND SYMBIONT CO-INVASION | 151 G
USING METACOMMUNITY THEORY TO PREDICT THE OUTCOMES OF HOST AND SYMBIONT CO-INVASION
What happens to symbiont biodiversity when hosts invade? Given that most organisms are involved in symbiotic interactions, these coupled invasions are not rare. In order to understand the potential outcomes of symbiont co-invasion and to predict their effect on symbiont biodiversity at both local and regional scales, we created a neutral metacommunity model of symbionts on hosts and simulated the process of invasion. In these simulations, we focused on 3 variables: percent invasion, host suitability, and symbiont dispersal rate. The major outcomes of this model were 1) that total symbiont abundance declined with % invasion, but the rate of decline was modulated by symbiont dispersal and variation in host suitability; 2) that gamma diversity was maintained even at very high levels of invasion, but as invasion increased, the partition of diversity shifted from alpha to beta. We compared these model results to biodiversity patterns from a multi-drainage survey of crayfish and their ectosymbionts and found a high level of similarity, though not all variables from the model could be represented in the survey data. We view these as first steps in understanding the responses of symbiont diversity to biological invasions.
- Biodiversity
- Dispersal
- Invertebrate
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Presenters/Authors
Bryan Brown
(), Virginia Tech, stonefly@vt.edu;
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Spencer Bell
(), University of Alabama, obscurus@vt.edu;
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Robert Creed
(), Appalachian State Universtiy, creedrp@appstate.edu;
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