2022 Early Hearing Detection & Intervention Virtual Conference

March 13 - 15, 2022

<< BACK TO AGENDA

5/21/2018  |   3:15 PM - 3:30 PM   |  COMPARISON OF ENZYMATIC THERMAL TOLERANCE AMONG RARE AND COMMON MUSSEL SPECIES OF CENTRAL TEXAS   |  410 A

COMPARISON OF ENZYMATIC THERMAL TOLERANCE AMONG RARE AND COMMON MUSSEL SPECIES OF CENTRAL TEXAS

Climate change is expected to drive warming temperatures in many southern states. We hypothesized that ESA candidate mussel species in Texas may be more susceptible to thermal stress, due to reduced intraspecific diversity and range, than common species. We used the electron transport system (ETS) assay to examine intra and interspecific patterns in thermal performance of respiratory enzymes of four rare species (Cyclonaias petrina, C. houstonensis, Lampsilis bracteata, and Fusconaia mitchelli) and two widespread species (Amblema plicata and Lampsilis teres). Preliminary analysis revealed significant differences in enzymatic thermal tolerance and intraspecific variation among the six species tested. Optimal temperatures and hypothesized temperature-of-chaperone-activation were highest for two of the rare species (C. petrina and C. houstonensis), intermediate for A. plicata, and lowest for L. teres. Similar results were found for intraspecific variation in enzymatic thermal tolerance. Regulatory and management strategies to reduce thermal stress should be tailored to individual species of interest, due to significant variation in thermal tolerance among species. However, it does not appear to be the case that rare species are necessarily more susceptible to thermal stress than common species.

  • Conservation
  • Climate Change
  • Metabolism

Presentation:
This presentation has not yet been uploaded.

Handouts:
Handout is not Available

Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference


Presenters/Authors

Jim Stoeckel (), Auburn University, jas0018@auburn.edu;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Austin Haney (), Auburn University, arh0093@auburn.edu;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Hisham Abdelrahman (), School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, hisham@auburn.edu;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Brian Helms (), Troy University, helmsb@troy.edu;


ASHA DISCLOSURE:

Financial -

Nonfinancial -