2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2019 | 9:30 AM - 9:45 AM | UNDERSTANDING THE PHYSIOLOGICAL MECHANISMS UNDERLYING SEASONAL MOVEMENTS OF COMMON MUDPUPPIES (NECTURUS MACULOSUS) IN AN URBAN, LAKE. | 150 DEF
UNDERSTANDING THE PHYSIOLOGICAL MECHANISMS UNDERLYING SEASONAL MOVEMENTS OF COMMON MUDPUPPIES (NECTURUS MACULOSUS) IN AN URBAN, LAKE.
The Earth is experiencing its sixth mass extinction event and freshwater animals, particularly amphibians such as the common mudpuppy (Necturus maculosus), are at highest risk. Mudpuppies are the most widely distributed fully aquatic salamander in North America, but population sizes and basic natural history, including seasonal movements, are poorly studied. Mudpuppies are threatened in Illinois, however, historic population sizes are generally unknown, and this lack of information, coupled with sampling at the wrong time of year, could lead to incorrect assumptions of declines or extirpations. In collaboration with Shedd Aquarium veterinary staff, we implanted radio-telemetry transmitters in 20 mudpuppies in March 2017 and 7 more in December 2017, in Wolf Lake, Chicago, IL. Mudpuppies were located every ~16 days from April 2017 - July 2018. Greatest movements by individuals generally occurred immediately after release. Greatest overall movements were correlated with water temperature increases during March 2017-December 2017, but not during December 2017 – July 2018. Analyses of hormone levels and metabolic activity will allow us to determine if movements are related to reproduction or foraging. Increased understanding of the mechanisms underlying seasonal movements and habitat selection will facilitate conservation efforts.
- Urban
- Management
- Conservation
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Presenters/Authors
Jared Bilak
(), Southern Illinois University, Shedd Aquarium, bilak@siu.edu;
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Matt Whiles
(), University of Florida, mwhiles@ufl.edu;
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Robin Warne
(), Southern Illinois University, rwarne@siu.edu;
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