2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2019 | 2:30 PM - 2:45 PM | FRESHWATER MUSSELS INFLUENCE SEDIMENT MICROBIAL COMMUNITY COMPOSITION AND FUNCTION | 150 G
FRESHWATER MUSSELS INFLUENCE SEDIMENT MICROBIAL COMMUNITY COMPOSITION AND FUNCTION
Bacteria play critical roles in nutrient cycling, changing biologically unavailable nutrients into accessible forms which supports primary production. Interactions between microbiomes, the multicellular organisms that host them, and the environment are understudied, especially in freshwater systems. Because geographic isolation has less impact on microbial community structure than habitat type, ecosystem engineers should have large influences on microbiome composition. Thus, freshwater mussels (Unionoida) are a good study system to investigate animal-microbiome interactions as they link multiple microhabitats together, such as the water column and sediment (through filter feeding) as well as aerobic and anaerobic sediments (through burrowing). To investigate linkages between mussels and microbiome composition, we collected sediment and mussel fecal, shell, and gut samples from the Kiamichi River, Oklahoma in August 2017 and July 2018. We used the 16s rRNA gene as a genetic barcode for community analysis. From our 2017 samples, we found that there are no species-specific differences between fecal samples. However, PERMANOVA shows sediments cluster based on proximity to different species as well as non-mussel, upstream samples. Additionally, mussels significantly alter the number of key nutrient cycling species potentially impacting overall microbiome function.
- Microbial
- Sediment
- Functional Ecology
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Presenters/Authors
Edward Higgins
(), University of Oklahoma, higginse@ou.edu;
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Thomas Parr
(), University of Oklahoma, Thomas.parr@ou.edu;
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Caryn Vaughn
(), University of Oklahoma, cvaughn@ou.edu;
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